• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    METHOD FOR CONTROLLING A WASHING MACHINE A washing machine which performs a washing course by heating the wash water and a method of controlling the same is disclosed. The method may include selecting a certain wash course from a plurality of wash courses, sensing an amount of laundry received in an inner basket and determining a wash water level required for the main wash of the given amount of garment for washing, supplying wash water to a level of wash water for steam generation so that a portion of the garment to be washed is moistened, the wash water level being above a lower surface of the inner basket and below the level of wash water for the main wash, heat the wash water to a first set temperature and trigger a wash water heater to generate steam from the wash water, supply additional wash water to the wash water level for wash main wash cycle, and perform a main wash cycle.
    公开号:BR102014002217B1
    申请号:R102014002217-1
    申请日:2014-01-29
    公开日:2021-08-31
    发明作者:Sunmi Kim；Dowan KIM；Yougkee Oh
    申请人:Lg Electronics Inc；
    IPC主号:
    专利说明:

    FUNDAMENTALS Field
    [1] This refers to a washing machine, and more particularly a washing machine capable of performing a washing course by heating the wash water, and a method of controlling the wash water. Fundamentals
    [2] A washing machine can remove contaminants from garments for washing using wash water and a soap, in particular, making use of a chemical action achieved through a soap dissolved in wash water. Contaminants can also be removed through mechanical action of the wash water or mechanical action generated by the drive of an internal basket or drum. BRIEF DESCRIPTION OF THE FIGURES
    [3] Embodiments will be described in detail with reference to the following figures, in which like reference numerals refer to like elements, in which: FIG. 1 is a perspective view of a washing machine in accordance with an embodiment as broadly described herein; FIG. 2 is a cross-sectional view of the washing machine shown in FIG. 1; FIG. 3 is an enlarged view of a portion A shown in FIG. two; FIG. 4 is a block diagram of a washing machine in accordance with an embodiment as broadly described herein; FIG. 5 is a front view of an exemplary control panel of a washing machine in accordance with an embodiment as broadly described herein; FIG. 6 is a flowchart of a method of controlling a washing machine, in accordance with an embodiment as broadly described herein; FIG. 7 is a flowchart of a method of controlling a washing machine, in accordance with another embodiment as fully described herein; and FIG. 8 is a graph of a change in wash water temperature in the allergen course. DETAILED DESCRIPTION
    [4] Reference will now be made in detail to various modalities, examples of which are illustrated in the accompanying figures. Where possible, the same reference numbers will be used throughout the figures to refer to the same or equal parts.
    [5] Certain washing machines may include a wash heater capable of heating wash water to promote soap activation and enhance the sterilizing effect of heat wash on garments. Certain washing machines are able to supply steam to create a high temperature washing environment and reduce energy consumption. Steam can be produced by heating water to a temperature higher than its boiling point. In that case, invisible steam can be produced. Steam can also be produced by heating water to a temperature lower than its boiling point. In that case, visible steam can be produced.
    [6] Washing machines can include a horizontal axis washing machine and a vertical axis washing machine. A horizontal axis washing machine performs washing by driving an inner basket (a drum) around a horizontal axis to remove contaminants by applying mechanical energy to the garment for washing through the drum drive. In the horizontal axis washing machine, the laundry is not completely submerged in wash water. Consequently, most of the mechanical action can be derived from friction between items of laundry garment, friction between laundry garment and drum, and shock applied to laundry garment. In this case, washing can also be implemented through the chemical action of the soap.
    [7] A vertical axis washing machine performs washing by rotating an inner basket (a drum) around a vertical axis or rotating a pulsator in the inner basket to remove contaminants by applying mechanical energy to the garment for washing by activating the inner basket or the pulsator. In the vertical axis washing machine, the laundry garment can be completely submerged in wash water, so that a large portion of the mechanical action for washing can be derived from friction between the water stream and the wash garment or shock. In this case, washing can also be implemented through the chemical action of the soap.
    [8] As such, the vertical axis washing machine differs from the horizontal washing machine in the amount of wash water used in wash and wash mechanism. Despite this difference, both the horizontal axis washing machine and the vertical axis washing machine can include a wash heater to heat wash water to increase the wash water temperature to a predetermined temperature. However, heating a large amount of wash water to a predetermined temperature may not be energy efficient. Consequently, the initial wash water heating time, the amount of wash water in the initial heating time, the number of times the heating is performed, and the heating temperature can be optimized for a particular wash course to achieve a desired washing effect and reduce energy consumption.
    [9] Certain washing machines may have a cycle in which a small amount of water is supplied before a wash cycle, so that a steam generation cycle can be performed before a main wash cycle. However, these types of washing machines only sterilize garments for dry cleaning using steam, providing any washing effect and/or removal of surface contaminants, because potentiation of the washing effect cannot be achieved simply by sterilizing through increasing the temperature of the Water.
    [10] For example, it may be beneficial for people who suffer from allergies caused by insects, eg mites, and in particular children, who are very vulnerable to mites, to have a way to effectively destroy mites from items that are being washed. However, unlike germs and mold in general, mites are not easily removed simply by creating a high temperature environment.
    [11] A washing machine applicable to a modality will be described in detail with reference to FIGs. 1 to 3. The exemplary washing machine shown in FIGs. 1-3 is a vertical axis washing machine. However, a washing machine and a method for controlling it according to this modality are not limited to the vertical axis washing machine, and may also apply to other types of washing machines.
    [12] Referring to FIGs. 1 and 2, a washing machine as modalized and broadly described herein may include a box 1 forming the outward appearance thereof, and a set of feet 10 coupled to the lower portion of the box 1. The box 1 may include a side compartment 2 having open upper and lower surfaces and forming the side surface of the washing machine, an upper cover 3 installed to cover the open upper surface of the side compartment 2, and a base 5 installed on the open lower surface of the compartment 2.
    [13] Arranged in compartment 2 are an outer basket 4 to accommodate washing water, an inner basket 6, or drum 6, disposed within the outer basket 4 to accommodate garments for washing, a drive including a motor to drive the inner basket 6 and a shaft 8a to transfer the driving force from the motor 8 to the inner basket 6, a water supply device 30 to supply water to the outer basket 4, and a drain assembly 20 to drain water from the outer basket 4 after washing or dehydration is complete.
    [14] The water supply device 30 includes a soap container 32 installed in the top cover 3 to temporarily store soap. Soap container 32 can be accommodated in a soap container housing 31. Soap container 32 can be mounted to and detached from soap container housing 31 in a slidable manner, such as a drawer.
    [15] The water supply device 30 can include a water supply valve 12 and a water hose 13. The water supply valve 12 can be connected to an external hose 11. Thus, washing water can be supplied from an external water supply source through the external hose 11. For example, the wash water supplied from the external water supply source can be fresh water.
    [16] For example, the water hose 13 can be connected to an external water supply source capable of providing both hot and cold water. That is, a hot water hose and a cold water hose can be provided separately. In that case, the water supply valve 12 may include a hot water supply valve and a cold water supply valve, which are individually provided. Consequently, when the water supply valve 12 opens, hot water and cold water can be individually or simultaneously supplied to the soap container 32. Additionally, the supplied washing water and the soap can be supplied to the inner basket 6 together.
    [17] The soap container 32 can be positioned to match an open upper portion of the inner basket 6. Additionally, wash water can be supplied so that the wash water drops towards the lower surface of the inner basket 6. Consequently , when washing water is supplied, the washing garment accommodated in the inner basket 6 becomes wet to some extent by the falling washing water, and the washing water containing the soap wets the washing garment.
    [18] The top cover 3 may include a laundry inlet opening 3a, allowing laundry to be fed in or out through it. A door 40 for opening and closing the laundry inlet opening 3a is installed in the top cover 3. At least a portion of the door 40 can be formed of glass, so that the interior of the inner basket 6 is visible. That is, door 40 includes a frame 40a and a glass panel 40b fitted to frame 40a. A control panel 7 for receiving command regarding washing machine operation or displaying an operating state of the washing machine is mounted on one side of the top cover 3. That is, a user interface can be provided.
    [19] The outer basket 4 can be suspended by a plurality of suspensions 15 arranged in the upper inner portion of compartment 2. One end of each suspension 15 is coupled to the upper inner portion of compartment 2, and the other end thereof is coupled to the lower portion of the outer basket 4.
    [20] A pulsator 9 to create rotating water stream from the water received in outer basket 4 is installed on the lower surface of inner basket 6. pulsator 9 can be integrated with inner basket 6 so that inner basket 6 and the pulsator 9 rotate together when engine 8 rotates. Alternatively, pulsator 9 can be arranged separately from inner basket 6 to rotate separately from inner basket 6 when motor 8 rotates. That is, only pushbutton 9 can rotate, or pushbutton 9 and inner basket 6 can rotate simultaneously.
    [21] Installed at the upper end of the inner basket 6 is a balancer 16 to prevent the inner basket 6 from being unbalanced by maldistribution of the laundry. For example, a liquid balancer filled with a liquid, such as salt water, can be used as the balancer 16. An outer basket cover 14 is installed at the upper end of the outer basket 4 to hold garments for washing in the inner basket 6 and prevent water from spreading.
    [22] Referring to FIG. 2, the drain assembly 20 includes a first drain hose 21 connected to a drain opening 26 formed in the lower surface of the outer basket 4, a drain pump housing 24 which houses a drain pump for pumping water, and a second drain hose 25 connected to drain pump housing 24 to discharge the water pumped by the drain pump from compartment 2. A drain motor to drive the drain pump is arranged in the drain pump housing 24. drain 20 can be arranged between the outer basket 4 and the base 5.
    [23] FIG. 3 is an enlarged view illustrating portion A shown in FIG. 2. Referring to FIG. 3, a wash heater 50 to heat the wash water and a heater cover 60 to cover the upper side of the heater 50 can be mounted to a lower portion of the outer basket 4.
    [24] Specifically, a concave heater mounting groove 52 is formed in a lower portion of the outer basket 4 to allow the wash heater 50 to be disposed therein. The heater mounting slot 52 is located in the lowermost portion of the outer basket 4. Consequently, wash water supplied through the inner basket 6 is introduced into the heater mounting groove 52 through the through opening formed in the inner basket 6. That this is because the through opening is formed not only on the outer circumferential surface of the inner basket 6, but also on the lower surface of the inner basket 6.
    [25] Due to the positions and structures of the outer basket 4, the inner basket 6 and the heater mounting slot 52, the wash water supplied to the inner basket 6 first fills the heater mounting slot 52 and then the water level of washing in the inner basket 6 gradually increases.
    [26] Drain opening 26 is formed on one side of a lower portion of heater mounting slot 52, and flush heater 50 is disposed above drain opening 26.
    [27] Heater cover 60 may be plate-shaped and may be formed of a thermally resistant metallic material to withstand heat produced by flush heater 50. Heater cover 60 may cover heater mounting slot 52 and may be disposed flush with the lower surface of the outer basket 4. Additionally, to allow the wash heater 50 to rest on the lower surface of the outer basket 4, the heater mounting groove 52 may be formed such that the surface bottom of outer basket 4 has a staggered shape. The heater mounting slot 52 can ensure that the wash heater 50 can be submerged with a minimum of wash water.
    [28] In the case where the lower surface of the outer basket 4 is staggered, alpha water stream may not be consistently and efficiently produced. Here, the alpha water stream can refer to the water stream that is supplied to the upper portion of the inner basket 6 by raising the wash water in the space between the inner basket 6 and the outer basket 4 according to the rotation of the basket 6 internal at a high rotation rate. Due to the heater mounting groove 52, the depth of water stored in the outer basket 4 can vary, which can impact alpha water stream formation. For that reason, the heater cover 60 can cover the upper open end of the heater mounting slot 52. Due to the heater cover 60, the lower surface of the outer basket 4 can be substantially flat. In other words, scaling of the lower surface of the outer basket 4 can be directed by the heater cover 60. As the scaling of the lower surface of the outer basket 4 is directed by the heater cover 60, the alpha water stream can be smoothly formed, increasing the washing performance.
    [29] The heater cover 60 can be secured and secured to the lower surface of the outer basket 4 by a fastener. The heater cover 60 may be provided with a plurality of securing openings and secured by fasteners such as screws or other fasteners as appropriate.
    [30] Heater 50 can be formed in the shape of a cylindrical bar or a bar with multiple curves and arranged horizontally.
    [31] Heater cover 60 is provided with one or more heater cover openings 62 to dissipate heat produced by wash heater 50 and allow wash water to be supplied therethrough. At least one heater cover opening 62 can be formed. In this embodiment, it is assumed that two heater cover openings are formed. The two heater cover openings 62 may have different shapes. Here, it is assumed that the heater cover openings 62 are formed in an elliptical shape and a circular shape. The heater cover openings 62 may be formed to be larger than the drain opening 26. The heater cover openings 62 may be formed at positions where they do not overlap the drain opening 26.
    [32] When the upper end of the drain opening 26 is opened, air can be introduced through the upper end of the drain opening 26 at the initial stage of draining and, consequently, abnormal noise may be produced due to a layer of air through the which water does not flow. Consequently, the heater cover 60 can be arranged to cover the entire upper portion of the drain opening 26, and the heater cover openings do not overlap the drain opening 26 so that the heater cover openings 62 do not overlap. communicate with the drain opening 26. That is, the circumference of each heater cover opening 62 is positioned spaced apart a predetermined distance from the circumference of the drain opening 26 in vertical and horizontal directions.
    [33] Once draining starts with the operation of the drain pump, the wash water in the outer basket 4 is pumped out by the drain pump. The sequentially pumped wash water passes through the drain opening 26, the first drain hose 21, the drain pump, and the second drain hose 25 and is then discharged out.
    [34] At that time, the wash water in the outer basket 4 can be introduced into the drain opening 26 through the heater cover openings 62 or the heater mounting slot 52.
    [35] Additionally, since the heater cover 60 covers the upper end of the drain opening 26, it can be ensured that the upper portion of the drain opening 26 is filled with wash water. Consequently, air is prevented from flowing through the upper portion of the drainage opening 26 in the initial stage of drainage or in the case where the flow rate for drainage is low. Since air is not introduced into the upper portion of the drain opening 26, noise generation due to a layer of air can be prevented, which can contribute to quiet operation of the washing machine. Additionally, preventing the introduction of air can also enhance pumping performance.
    [36] FIG. 4 is a block diagram of a washing machine in accordance with an embodiment as broadly described herein.
    [37] Operation of the washing machine is controlled by a 7a controller. The controller 7a can be arranged within the control panel 7 shown in FIG. 1. The controller 7a can control the operation of the washing machine based on signals commanded through a stroke selector 100 and an option selector 140 provided on the control panel 7. That is, the washing machine operates according to a operating course selected through stroke selector 100 and an option selected through option selector 140. Information about the selected operating course and option, time, and current status can be displayed on a display 150 according to control by controller 7a .
    [38] Controller 7a can control operation of a water supply valve 33. By controlling the water supply valve 33, the amount of washing water supplied can be regulated. Additionally, since the water supply valve 33 can include a hot water supply valve and a cold water supply valve, the temperature of the supplied wash water can be controlled by controlling the water supply valve 33.
    [39] Controller 7a can control the operation of the wash heater 50. Consequently, overheating of the wash heater 50 can be prevented, and the wash heater 50 can be operated until the wash water reaches a desired temperature.
    [40] Controller 7a can control the operation of motor 8. Consequently, by controlling motor 8, the start time of motor start and motor start pattern (eg rotation of inner basket 6, rotation of pusher 9, rotation of inner basket 6 for dewatering operation) can be controlled appropriately.
    [41] Controller 7a can control the operation of drain pump 24. Consequently, drain can be performed as needed.
    [42] Controller 7a can be connected to a water level sensor 70 and a temperature sensor 71. Consequently, desired information related to water level and temperature can be provided to controller 7a by sensors 70 and 71 at a time specific. The controller 7a can control the operation of the water supply valve 33 based on the water level information supplied from the water level sensor 70. Consequently, it is possible to supply wash water up to a target water level. The controller 7a can control the operation of the water supply valve 33 based on the temperature information supplied from the temperature sensor 71. Consequently, wash water can be supplied at a target temperature. Additionally, the controller 7a can control the operation of the wash heater 50 based on the temperature information provided from the temperature sensor 71 so that the wash water can be heated to the target temperature.
    [43] FIG. 5 is a front view of an exemplary washing machine control panel 7 in accordance with that embodiment.
    [44] In order for the washing machine to wash multiple types of garments for washing, multiple wash strokes can be selected and performed. Additionally, multiple wash strokes can be selected and performed not only to perform wash but also to provide functionality. Consequently, a user can easily select a desired wash course from a plurality of wash courses.
    [45] In accordance with this embodiment, the washing machine may include the wash heater 50 for heating wash water. Additionally, steam can be generated by the wash heater 50 and supplied to the inner basket 6. Steam generation by the wash heater 50 may suggest additional energy consumption. Consequently, the washing machine can be configured to provide clear indication to the user as to whether steam is in use. To this end, various operational courses can be provided with respect to steam.
    [46] The course selector 100 can provide selection of a specific course from a plurality of courses. Courses can include courses with steam available 110. That is, they can include courses during which steam can be used. When the user selects one of the courses with available steam 110, the selected course can be played. In that case, controller 7a controls the washing machine to perform the course as programmed.
    [47] For example, courses with available steam 110 may include a normal course. In the case where the user selects only the normal course, the normal course including washing, rinsing and dehydrating can be performed as programmed.
    [48] User can select use of steam in addition to courses with available steam 110. That is, steam can be selected as an option of courses. This selection can be performed through option selector 140. Specifically, option selector 140 can include a steam option 141 allowing selection of steam usage.
    [49] For example, when the user selects Cotton/Normal Stroke using stroke selector 100 and then Steam option 141 using option selector 140, the normal stroke can be performed along with the vaporization stage, which will be described in detail below.
    [50] The plurality of courses can also include courses excluding steam 130. That is, courses can include courses during which steam cannot be used. Courses excluding steam 130 can be courses during which steam is unavailable. That is, courses with steam exclusion can be programmed so that the steam stage is not included and/or available for selection.
    [51] Additionally, the steam option 140 can be blocked from being selected together with the steam exclusion strokes 130. Consequently, when a steam exclusion stroke 130, eg a wool stroke, is selected, the selector option 140 or control panel 7 can be controlled in such a way as not to allow the user to select steam option 141.
    [52] The plurality of courses may include Steam Courses 120 including courses during which steam is automatically used. That is, a washing course can be programmed to include the steaming stage. FIG. 5 shows an allergen course 121 and a basket cleaning course 122 as examples of the steam course 120, which will be described in detail below.
    [53] FIGs. 6 and 7 are flowcharts of a method for controlling the washing machine according to an embodiment. In particular, FIG. 6 is a flowchart of the method in the case where an available steam course and steam option are selected, and FIG. 7 is a flowchart of the method in the case where the steam course is selected.
    [54] The washing machine can basically start operating with S1 selection of a particular stroke among a plurality of washing strokes. Here, the washing stroke can refer to an operation provided by the washing stroke. This does not necessarily refer to a course on washing clothes for washing. Additionally, the wash stroke can refer to a series of washing machine operations automatically performed in a pre-programmed order from the beginning to the end of the wash stroke. The wash course can generally include a wash cycle, a rinse cycle, and a dewatering cycle. These cycles can be automatically performed and terminated.
    [55] In the washing machine according to this mode, steam can be generated by the wash heater 50 arranged in the lower portion of the outer basket 4. Additionally, the wash water level for steam generation can be set and controlled from different shape from the water level for water wash (wash water wash). Additionally, the vaporization stage can be set to start at a time other than the initial water wash time. That is, the vaporization stage and the water wash can be set to be clearly distinguished from each other by time.
    [56] As described above, courses for washing garments for washing other than the basket cleaning course 122 are basically performed by washing water. That is, water washing can be performed. In the case of water washing, a sufficient amount of washing water needs to be provided. Particularly, in the case of a vertical axis washing machine in which washing is performed by stream of water, the amount of washing water is closely related to the washing effect.
    [57] Consequently, in a washing course during which water washing is performed, an amount of garment wash can be perceived S2 to determine an appropriate wash water level for which wash of the perceived amount of garment wash received in the inner basket 6, or drum 6, (amount of garments to be washed) can be performed. In other words, after performing the course selection step S1 including selecting a specific course from a plurality of washing courses, the wash water level for the main wash according to the amount of garment to wash can be determined S2. In case of basket cleaning stroke, step S2 can be omitted. This is because the wash water level for the main wash can be set independently of the amount of garment to wash.
    [58] Here, the main wash and wash water level for the main wash indicate the main wash cycle for a specific selected stroke and the wash water level for the implementation of that cycle. That is, the main washing step is a stage in which washing with water is performed seriously through the chemical action of the soap, and mechanical action through the actuation of the inner basket 6, or drum 6, or the pulsator 9.
    [59] Consequently, to achieve optimal washing effects in the main wash step, the optimal amount of wash water according to the amount of garment to wash, i.e. the wash water level for the main wash, can be determined.
    [60] In a method to control the washing machine according to this modality, the steaming step can be performed before the main wash is performed. Additionally, the steaming step S4 can be performed before the wash water is supplied to the wash water level for the main wash. That is, once a wash course is selected, and the wash water level for the main wash is determined, the steaming step can be performed before the main wash is performed.
    [61] In certain embodiments, the sequential relationship between the S4 steaming step and the main wash is applied to both the steam stream and the streams with available steam, as shown in FIGs. 6 and 7. This is because the sterilization effect and the washing effect can be considerably enhanced with low energy use through the S4 vaporization step. This sequential relationship is also applicable to the cleaning course of the basket 122. The cleaning course of the basket 122 is not affected by the amount of garments to be washed, but may include the main wash. In that case, the wash water level for the main wash can be preset. Consequently, before water is supplied to the wash water level S12 for the main wash S13, water for the vaporization can be supplied S3, and the vaporization step S4 can be performed.
    [62] Hereinafter, a series of steps performed to generate and deliver steam will be described in detail.
    [63] As discussed above, a selection can be conducted via the stroke selector 100 or via the stroke selector 100 and the option selector 140 so that the steaming step is performed on a specific wash stroke. That is, as shown in FIG. 6, the vaporization step can be selected via either the stroke selector 100 or the option selector 140. Additionally, as shown in FIG. 7, the vaporization step can be selected via stroke selector 100.
    [64] For the specific wash course, a wash water level among a plurality of wash water levels for the main wash can be determined according to the amount of garment to wash. The wash water level for the main wash can be determined independently of the amount of garments to wash.
    [65] To perform a specific wash course including the steaming step, wash water for steam generation can be supplied S3. That is, in the steam course, water supply for steam generation instead of main wash can be performed first. Additionally, when steam is used in the course with steam available, water supply for steam generation rather than main wash may be conducted first.
    [66] Supply of water for steam generation can be performed until the water reaches the wash water level for steam generation S3. Here, the wash water level for steam generation can be a water level higher than the level of the lower surface of the inner basket 6 and lower than the wash water level for the main wash, so that it leaves of the garment to be washed is wetted by the washing water.
    [67] As described above, in the case of the vertical axis washing machine, the wash water level for the main wash may be a water level that allows the garment to be washed to be completely submerged in the wash water. Consequently, the wash water level for steam generation can be less than any wash water level for the main wash which can be determined based on the courses or water level option. This is because an increase in the amount of washing water suggests that a greater amount of energy is consumed when the water is heated to a certain temperature.
    [68] FIG. 2 shows an example of three water levels B, C and D. Water level B can be a water level at which washing water can be supplied from outer basket 4 to inner basket 6. That is, the level of water reaching the lower surface of inner basket 6 may be water level B. Consequently, at a water level higher than water level B, the laundry garment received in inner basket 6 may start to get wet by wash water. The water level C represents a water level that causes the paddles 9a of the pulsator 9 to be submerged, and the water level D represents a water level that causes even the lid 9b of the pulsator 9 to be submerged.
    [69] A plurality of vanes 9a can be arranged extending outwardly in a radial direction from a central portion of the pulsator 9, and can protrude from the lower surface of the inner basket 6 a predetermined distance upwards. Additionally, the cover 9b can be arranged in the center of the blades 9a and protrude further upwards than the blades 9a. Consequently, the wash water level for the main wash can be higher than the D water level to generate a wash water stream and wash mechanism. This means that the laundry is not completely wetted by the wash water at a wash water level between water level B and water level D, because a majority of the laundry garment is positioned above paddles 9a and cover 9b.
    [70] Consequently, the wash water level for steam generation can be higher than the B water level and lower or equal to a D water level. More specifically, the wash water level for the generation of steam can be between water levels C and D. Therefore, the wash water level for steam generation can be viewed as a water level that causes a portion of the laundry garment to be soaked in wash water . Additionally, the wash water level for steam generation may be a water level that causes the upper portion of the pulsator 9 to be substantially submerged in the wash water.
    [71] Such a wash water water level can be sensed via a frequency from the water level sensor 70. When a lower frequency is sensed, it can generally indicate a higher water level.
    [72] In addition to the wash water level for steam generation, this mode can have wash water supplied towards the lower surface of inner basket 6 through the upper portion of inner basket 6. That is, wash water can be supplied to the laundry room accommodated in the inner basket through the soap container 32, together with the soap. Water supply can be conducted until the water reaches the wash water level for steam generation.
    [73] The laundry garment received in the inner basket is wetted by supplying the wash water and soap, and then wetted again by the supplied wash water. In some cases, a part of the laundry garment may not be wetted by washing water and soap. However, when steaming step S4 is performed, effective washing can be ensured by the wash water level for the steam generation and/or water supply method.
    [74] To enhance the wash effect, an immersion step of submerging the garment to wash in wash water and soap can be performed. That is, an immersion step of immersing the garment for washing and contaminants adhered to it in the wash water to facilitate the separation of contaminants can be performed. Additionally, the immersion step can be performed to allow the soap to be sufficiently dissolved in the washing water so that the washing effect with the soap is enhanced. Such an immersion step can be more effectively performed when hot wash water is used, because an increase in temperature further potentiates the immersion of laundry garments, contaminants and soap. However, the immersion step performed with garments to wash submerged in wash water generally takes a long time. Additionally, heating a large amount of washing water consumes a large amount of energy.
    [75] According to this modality, the immersion step can be performed by consuming a small amount of energy for a short time using steam. Consequently, effective sterilization and washing can be achieved with low energy consumption for a short time. Specifically, through the wash water level for steam generation and water supply to the wash water level for steam generation, a portion of the laundry garment is wetted by the wash water and soap. Additionally, a portion of the laundry garment is also wetted by the supplied wash water and soap.
    [76] Once the wash water supply step for steam generation S3, in which the wash water is supplied to the wash water level for steam generation, is performed, the steam step S4 can be performed. That is, by activating the wash heater 50, the wash water can be heated. Additionally, the wash heater 50 can be activated until a first set temperature is reached. Additionally, the wash heater 50 can be actuated consistently and continuously. In other words, once the scrub heater 50 starts to turn on, it can be consistently turned on until the first set temperature is reached.
    [77] The first set temperature can be sensed by the temperature sensor 71 arranged near the wash heater 50 or on the lower surface of the outer basket 4. That is, when the temperature sensor 71 senses the first set temperature according to the heating of the wash water, the controller 7a for driving the wash heater 50.
    [78] The first temperature set can be set to be, for example, greater than or equal to 60 degrees Celsius. In certain embodiments, the first set temperature is set to be less than the boiling point of water, or less than the boiling point of whatever wash fluid is being used. That is, in this modality, the steam can be visible steam that is produced at a temperature lower than the boiling point of water, instead of invisible steam produced at a temperature greater than or equal to the boiling point of water.
    [79] As described above, wash water heated to the wash water level for steam generation comes into contact with garments to be washed. The amount of heat transferred through liquid water differs greatly from the amount of heat transferred through gaseous water. This results from a large difference in contact surface area.
    [80] Consequently, excessive increase in wash water temperature can cause thermal damage to garments to be washed and is therefore not preferred. On the other hand, an excessively low rise in the temperature of the wash water can produce a very small amount of steam.
    [81] In consideration of sterilization temperature, amount of steam, amount of energy consumed, heating time, and thermal damage to garments for washing, the first temperature set may be greater than or equal to 60 degrees Celsius and less than 70 degrees Celsius .
    [82] The first temperature set is related to the temperature of the wash water supplied. An environment in which cold and hot water is supplied through an external water supply source can be provided. When the washing machine is used in this environment, a wash water temperature can be selected through a temperature option 142.
    [83] By properly adjusting the proportions of cold water and hot water to be supplied using temperature option 142, wash water can be supplied at the temperature selected for the wash water. The lowest temperature may represent normal tap water supply, and the highest temperature may represent only hot water supply.
    [84] In such an environment that allows both cold and hot water to be supplied, the temperature of the hot water generally does not exceed 50 degrees Celsius. The temperature can be greater than or equal to 50 degrees Celsius. Consequently, to minimize energy consumption for steam generation, wash water at the highest available temperature can be supplied to the washing machine in the step of supplying wash water for steam generation S3. That is, depending on the washing machine installation environment and control conditions, washing water of the highest possible temperature can be supplied. In step S3 of supplying wash water for steam generation, the operation can be controlled so that only hot water is supplied.
    [85] Here, the first temperature set may be higher than the highest hot water temperature in consideration of the environment in which hot water is supplied, because heating time is required to create an environment for steam generation. This is intended to generate a sufficient amount of steam and allow the generated steam to create a hot and humid environment in the inner basket 6.
    [86] As shown in FIGs. 1 and 2, outer basket 4 and inner basket 6 are sealed and isolated from the external environment by door 40 to some extent. Sealing is sufficient in that visible steam having large particles is prevented from leaking out of the washing machine through port 40.
    [87] Consequently, as the wash water is heated to the first temperature set at the wash water level for steam generation, the visible steam creates a hot and humid environment in the inner space of the inner basket 6. That is, the soap, laundry, and indoor air are heated not only by washing water, but also by steam.
    [88] As the temperature increases, the amount of water absorbed by the garment for washing increases. Thus, the garment immersion step to wash, soap and contaminants can be implemented in a high temperature environment.
    [89] Vapor has a larger surface area than liquid water. Consequently, when steam is generated, laundry garments can absorb a greater amount of water. Additionally, an increase in liquid temperature suggests a decrease in surface tension. Consequently, wash water can be additionally gently absorbed by garments to be washed.
    [90] As such, by heating the wash water level for steam generation, absorption of both liquid wash water and steam can be smoothly conducted.
    [91] In steaming step S4, the inner basket 6 can be rotated periodically or repeatedly. That is, pulsator 9 does not rotate independently. Instead, inner basket 6 and pushbutton 9 rotate integrally. Consequently, the vaporization step S4 can be performed without activating the pulsator 9. Activating pulsator 9 means that the pulsator 9 rotates with the inner basket 6 stopped.
    [92] Rotating the inner basket 6 can evenly supply steam to the laundry. That is, this is intended to distribute the garment for washing as close to the lower surface of the inner basket 6 as possible. Preferably, the inner basket 6 is rotated at a low rate of rotation, because excessive rotation of the inner basket at the wash water level for steam generation can result in damage to the laundry.
    [93] Additionally, the low rotation rate of the inner basket 6 can create microvibration on the surface of the wash water. Thus, the contact area between air and washing water increases. Consequently, as microvibration and wash heater actuation are simultaneously implemented, visible steam can be more effectively generated.
    [94] Hereinafter, the available steam course will be described in detail with reference to FIG. 6.
    [95] As disclosed above, the course with steam available can be a course for which the user is allowed to select the implementation of the steam step as an option. In the course with steam available, damage to laundry garments can be prevented due to the steaming step.
    [96] Once the user selects the available steam course and steaming step as an option (S1), perception of the amount of garment to wash and determination of the wash water level for the main wash (S2), provision of washing water for steam generation (S3), and steaming (S4) can be performed sequentially as described above. According to a selected stroke after that, the main wash can subsequently be performed. In other words, the steaming step is performed before the main wash included in a predetermined course is performed.
    [97] That is, after vaporization (S4) is complete, water supply for wash (S12) and main wash (S13) can be performed. Once the main wash step is complete, draining (S14) and simple dewatering (S15) (or dewatering) can be performed. After that, rinsing and dehydration (or dehydration) can be sequentially performed and then the course can be completed.
    [98] In the case where the user selects only the steam stroke available without the steam option (S1), sensing the amount of garment to wash and determining the wash water level for the main wash (S2) are performed. Supply of wash water for steam generation (S3) and steaming (S4) are not performed. That is, when the wash water level for the main wash is determined (S2), water is supplied up to the wash water level for the main wash (S12). Then main wash (S13), rinse and dehydration can be sequentially performed as programmed to implement the selected stroke.
    [99] On the steam available course, the initial operating pattern of the washing machine can vary greatly depending on whether the steam option is selected or not. That is, the user can clearly recognize the difference between operation with the steam option and operation without the steam option, as the steaming step is performed before the basic stroke. In addition, the steaming step clearly differs from the subsequent main wash at the water level and the activation of the inner basket 6 or the pulsator 9.
    [100] Selecting the vaporization step as an option assumes the user recognizes increased energy consumed. The user can intentionally select the vaporization step as an option to enhance the washing effect and the sterilizing effect, although the user recognizes increased energy consumption.
    [101] The steaming step can be performed at the initial stage or before the steam available course. Additionally, the steaming step can be clearly distinguished from the normal course with steam available (without the steaming selected) both visually and on the timeline. Consequently, the effect of the aforementioned vaporization step as well as the effect of allowing the user to intuitively and easily select the vaporization step can be provided. Thus, product satisfaction, product reliability, and convenience in using the product can all be enhanced.
    [102] Hereinafter, the steam course will be described in detail with reference to FIG. 7. The steam course is a course in which steam is automatically generated. That is, regardless of whether the steam option is selected or not, steam can be generated in that course.
    [103] FIG. 5 shows the cleaning course of the basket 122 as an example of the steam course. Once the cleaning course of the basket 122 is selected, supply of wash water for steam generation (S3) and vaporization (S4) are performed as previously described. Thus, a hot and humid steam environment is created inside the inner basket 6 as well as inside the outer basket 4. After that, water can be supplied and subsequently the main wash can be performed. Also in the course of cleaning the basket 122, the steaming step can be performed before the main wash.
    [104] Steam 120 course may include a 121 allergen course or allergy care course. Once the steam course is selected, water level determination (S2), supply of wash water for steam generation (S3), steaming (S4), and main wash are sequentially performed. That is, even if the steam option is not selected, the above steps are performed sequentially simply by selecting one of the steam courses 122.
    [105] Hereinafter, the 121 allergen course will be described in detail as an example of the vapor course.
    [106] As shown in FIG. 7, once the allergen course 121 is selected, the steps up to vaporization step S4 of heating the wash water to the first set temperature can be sequentially performed. That is, the steps up to steaming step S4 are the same as those performed when the aforementioned steam available stroke and steam option are selected together.
    [107] After steaming step S4, step S5 of supplying wash water to the wash water level for the main wash determined in water level determination step S2 can be performed. Consequently, a relatively large amount of additional wash water can be provided.
    [108] The temperature of the washing water which has risen to the first set temperature is lowered by supplying additional water, i.e. through the step of supplying washing water. Consequently, the washing water heating step (S6) of washing water heating can be performed before the main wash (S7). Additionally, to reduce energy consumption in the wash water heating step (S6), higher temperature wash water can be supplied when supplying wash water (S5).
    [109] After the wash water supply (S5) is complete, balancing (S10) and/or the tapping step (S11) can be performed before heating the wash water (S6).
    [110] Balancing (S10) can be performed to distribute the laundry evenly across the inner basket 6. Balancing (S10) can be performed by rotating the inner basket 6 clockwise and counterclockwise. Through balancing (S10), laundry garments positioned above the wash water level for the main wash can be submerged in the wash water.
    [111] Additionally, after balancing (S10) is performed, the knock step (S11) can be performed. The whipping step can be performed by activating the pulsator 9. Through the whipping step, a stream of water can be created and the garment for washing submerged in the wash water can be moved. Through the beating step (S11), the laundry as a whole can be wetted by the wash water.
    [112] Here, the 121 allergen course is a course to maximize the washing effect as well as the sterilizing effect. That is, this is a course specially provided to effectively kill mites and other allergens.
    [113] To effectively kill mites, two factors of temperature and time to which the mites are exposed need to be satisfied. In particular, mites must be exposed to a temperature greater than or equal to 55 degrees Celsius for more than 10 minutes to kill substantially 100% of the mites. This condition can be referred to as an insecticidal condition. Satisfying this insecticidal condition with minimal energy consumption is a challenge. In satisfying this insecticidal condition, the temperature of the wash garment and the wash water, in addition to the temperature of the wash water and the temperature of the inner basket and outer basket in which the wash water is stored are also important.
    [114] As described above, a steam environment was created in the steaming step (S4) and the temperature of inner basket 6 and outer basket 4 increased sufficiently. Consequently, after washing water is supplied, the temperature of outer basket 4 and inner basket 6 may not decrease greatly. Therefore, even when additional water supply is conducted, it is possible to satisfy the insecticidal condition with a relatively small amount of energy. Additionally, since maximum temperature wash water can additionally be supplied, the decrease in temperature can be minimized.
    [115] Specifically, in the wash water heating step (S6), the wash water can be heated to a second set temperature. That is, wash water heating can be implemented until the wash water temperature reaches the second set temperature.
    [116] In certain modalities, the second set temperature can be between 50 degrees Celsius and 60 degrees Celsius. More specifically, the second set temperature can be lower than the first set temperature. In other words, the first set temperature can be higher than the second set temperature. That is, the temperature set for heating a large amount of wash water may be low compared to the temperature set for heating a smaller amount of wash water. Thus, the amount of energy consumed decreases considerably in this case compared to the opposite case. Additionally, the water temperature can reach the second set temperature more easily.
    [117] Activating the inner basket 6 or the pushbutton 9 in the washing water heating step (S6) can be the same as in the steaming step (S4). That is, the washing water heating step (S6) can be performed without activating pushbutton 9.
    [118] Once the wash water heating step (S6) is complete, the main wash step (S7) is performed. That is, by activating pushbutton 9, the main wash is performed. Once the main wash step (S7) is complete, draining (S8) and simple dewatering (S9) can be performed. After that, rinsing and dehydrating can be sequentially performed, 9 and then the course can be completed.
    [119] Here, the relationship between the first temperature set and the second temperature set to satisfy the insecticidal condition with low energy consumption is important as discussed above. These temperatures can assume the wash water level for steam generation and the wash water level for the main wash.
    [120] Specifically, the first set temperature and the second set temperature can be set before and after completion of heating the wash water so that the temperature of the wash water satisfies the insecticidal condition.
    [121] As discussed above, the first set temperature may be higher than the second set temperature. Consequently, the second temperature set is important to substantially satisfy the insecticidal condition.
    [122] As the wash water is heated, the temperature of the wash water consistently increases. However, once the wash water heating is stopped, heat is transferred to the outside and hence the wash water temperature decreases. Consequently, the amount of heat transferred is proportional to the temperature difference. Therefore, when the temperature difference between the wash water and the external environment in which the wash water is accommodated, that is, the temperature difference between the inner basket and the outer basket is low, the amount of heat transferred can be low. This suggests that the wash water temperature may slowly decrease after the wash water heating is stopped.
    [123] The vaporization step (S4) for implementing the 121 allergen course may be a step to effectively heat the external environment. Additionally, operation of the wash heater preferably includes a pause period, so that heat is sufficiently transferred from the heated wash water to the laundry, inner basket 6, and outer basket 4. That is, in the heating step of wash water (S6), the wash heater 50 can be operated with a relatively short pause period. During the break period, heat can be sufficiently transferred to the inner basket and the outer basket.
    [124] In certain modalities, the tapping step (S11), including pressing pushbutton 9, can be performed during the pause period. The whipping step is intended to supply the heated wash water to all garments to be washed. Additionally, this step is intended to make the garment to be washed partially wetted by the wash water to be completely wetted.
    [125] Consequently, the washing water heating step may include the step of activating the heater including continuously activating the heater 50 and the tapping step including activating the pulser 9. In certain embodiments, the step of activating the heater and the knocking step can be performed in an alternating manner.
    [126] As discussed above, actuation of pulser 9 can be stopped at the heater actuation step, while pulser 9 is actuated and wash heater 50 is stopped at the tapping step.
    [127] The heater actuation step and the knock step can be performed sequentially and repeatedly. Additionally, the wash water heating step (S6) can be completed through the heater actuation step.
    [128] As discussed above, the wash water heating step can be performed until the second set temperature is reached. Here, the second set temperature can be higher than the temperature under the insecticidal condition. However, it is possible to establish that the second temperature set is less than 60 degrees Celsius. For example, the second set temperature can be set to 57 degrees Celsius.
    [129] In the case where the second established temperature is greater than or equal to 55 degrees Celsius, the temperature of the wash water will be greater than or equal to 55 degrees Celsius for a certain time in the wash water heating step (S6) until it reaches the second set temperature. Thereafter, when the heating step (S6) is completed, the wash water temperature gradually decreases, dropping below 55 degrees Celsius. Consequently, it may take some time for the wash water to drop below 55 degrees Celsius after the heating step is finished. This suggests that the insecticidal condition can be satisfied with low energy consumption due to the difference in set temperature and water level between the steaming step S4 and the washing water heating step (S6).
    [130] FIG. 8 depicts change in wash water temperature in the steam course, particularly in the allergen 122 course.
    [131] The steaming step (S4) can be performed until the wash water temperature reaches the first set temperature (eg 70 degrees Celsius). After steaming step S4 is completed, hot water is additionally supplied (S5). Consequently, the wash water temperature may not drop significantly.
    [132] However, since the amount of wash water increases relatively, the wash water heating step (S6) can be performed longer than the steaming step (S4). The washing water heating step (S6) may include a plurality of pause periods.
    [133] While the wash water heating step (S6) is being performed, the wash water temperature gradually increases. Additionally, the wash water heating step (S6) can be performed until the wash water temperature reaches the second set temperature (eg 57 degrees Celsius).
    [134] Consequently, a section that continuously satisfies the insecticidal condition exists before and after the time at which the washing water heating step (S6) is completed.
    [135] The section that satisfies the insecticidal condition can be extended by gradually increasing the second set temperature. However, in view of energy consumption, setting the second set temperature to be higher may not be preferable.
    [136] In certain circumstances, the steam stream may not necessarily satisfy the insecticidal condition. That is, this course may include a general sterilization course rather than the allergen treatment course. In any case, the heat transfer medium can be changed. In the steaming step, a hot and humid environment can be created in the inner basket 6 substantially through steam. In the washing water heating step, a warm environment can be created in the inner basket 6 substantially through the washing water.
    [137] Due to the sequential relationship between the steaming step and the washing water heating step, and the established temperature difference, water level and heat transfer medium, the washing effect and the sterilization effect can be potentialized, and the amount of energy consumed can be relatively reduced.
    [138] A washing machine and a method for controlling it are provided which are capable of performing the vaporization step with low energy consumption.
    [139] A washing machine and a method to control it are provided which are able to effectively enhance the washing effect and the sterilizing effect. Specifically, a washing machine and a method for controlling the same are provided which are capable of effectively immersing contaminants, laundry garments and a soap in the initial stage of washing using steam.
    [140] A washing machine and a method for controlling the washing machine are provided which can allow a user to select a washing course and steam option intuitively and easily to ensure convenient use of the washing machine.
    [141] A washing machine and a method for controlling it are provided which can allow a user to clearly recognize steam usage through intuition and vision and according to time.
    [142] A washing machine and a method to control it are provided which are able to effectively kill allergy causing mites with low energy consumption.
    [143] A washing machine and a method for controlling it are provided which are capable of maximizing the steaming effect by clearly distinguishing the water level for steam generation from the wash water level for the main wash, from the wash water heater temperature for steam generation from the wash water temperature at the wash water level for the main wash, and from the steaming step of the main wash step.
    [144] A method for controlling a washing machine to perform a wash stroke by heating the wash water, as modalized and broadly described herein, may include a stroke section step of selecting a certain wash stroke among a plurality of washing courses, a water level determination step of realizing an amount of garments to be washed accommodated in an inner basket (an amount of garments to be washed) and determining a level of wash water for the main wash, a water of washing to generate the steam supply step for supplying wash water to a wash water level for generating steam, so that a portion of the garment to be washed is wetted by the wash water, the water level of wash for steam generation being higher than a lower surface of the inner basket and lower than the wash water level for the main wash, a steam heating step d the wash water up to a first established temperature and generation of steam from the wash water through the activation of a wash heater provided with an external basket that accommodates the internal basket, a water for the wash supply step of providing the wash water up to the wash water level for the main wash, and a main wash step to play the main wash.
    [145] Wash water can be supplied towards the lower surface of the inner basket through an upper portion of the inner basket. That is, in the wash water for the generation of the steam supply step and in the water for the wash supply step, water can be supplied directly towards the laundry garment accommodated in the inner basket.
    [146] Wash water can be supplied to the inner basket through a soap container. Consequently, wash water and soap can be supplied to the garment for washing through the wash water for generating the steam supply step before the steaming step is performed.
    [147] The steps above can be performed sequentially. That is, the steaming step can be performed before the main wash step.
    [148] Washing strokes may include a stroke (a stroke with steam available) that allows you to select to perform the wash water for generating the steam supply step and the steaming step. Additionally, wash water for the generation of the steam supply step and the steaming step can be performed by selecting the available steam course and a steam option. That is, when only the course with steam available is selected, a predetermined course can be performed without implementing the steaming step. When the steam available stroke and steam option are selected, the predetermined stroke can be performed after the steaming step is performed.
    [149] Wash strokes may include a stroke (a steam exclude stroke) that excludes selection of wash water for steam supply step, steaming step, and steam option generation. In any case, the steam-excluding stroke can be a predetermined stroke during which the steaming step is not performed. Consequently, during the course, steam option selection may not be allowed.
    [150] Wash strokes may include a stroke (a steam stroke) of sequentially performing the above steps. That is, wash strokes can include a stroke during which the steaming step is automatically performed simply by selecting the stroke. During the steam course, the main wash can be performed after the steaming step is performed.
    [151] Consequently, in a washing machine as modalized and broadly described here, the steaming step can be performed by selecting a stroke or via stroke and steam option. In any case, however, the vaporization step can be performed before the main wash.
    [152] Since the steaming step precedes the main wash step, the user can clearly recognize whether the steaming step is performed according to time or not. Additionally, the vaporization step and the main wash step can be clearly distinguished from each other. Thus, the use can also recognize whether the vaporization step is performed or not.
    [153] The steaming step can differ greatly from the main wash step in the water level and the drive pattern of the inner basket and pulsator. Therefore, the user can easily and intuitively recognize whether the vaporization step is performed or not.
    [154] The first temperature set may be greater than or equal to 60 degrees Celsius. The first temperature set can be less than 70 degrees Celsius. Here, the first temperature set can be higher than the highest possible temperature of the provided wash water. In a washing machine installation environment that allows hot water supply, the hot water temperature may not exceed 50 degrees Celsius. Therefore, to generate a sufficient amount of steam, the first set temperature can be set higher than the highest wash water temperature.
    [155] A pulsator may be provided at the lower surface of the inner basket, wherein the wash water level for steam generation is a water level that causes an upper portion of the pulsator to be substantially submerged.
    [156] At this water level for steam generation, the wash garment positioned in the lowermost portion of the inner basket can be submerged in the wash water. However, most laundry garments can be positioned above the water level of the wash water for steam generation. The generation of steam at the wash water level for steam generation allows wash garments to be quickly wetted, and promotes immersion of wash garments, contaminants, and soap.
    [157] In the wash water for generating the steam supply step, the wash water can be supplied to the inner basket at the highest possible temperature. Similarly, in the water for the wash supply step, wash water at the highest possible temperature can be supplied.
    [158] The vaporization step can be performed without triggering the pulsator. Since the water level is too low, pressing the button can damage the laundry. Although the pushbutton is not activated, the rotation of the inner basket is not excluded. That is, in the vaporization step, the inner basket can rotate for a certain time. In structure, the rotation of the inner basket may imply integral rotation of the inner basket and the pulsator. Consequently, when the pulsator does not fire, it might suggest that only the pulsator does not rotate.
    [159] The method may further include a wash water heating step of reactivating the wash heater and heating the wash water to a second set temperature after the end of the water for the wash supply step.
    [160] The second set temperature can be lower than the first set temperature.
    [161] The main wash step can be performed after the end of the water for the wash supply step. The first set temperature and the second set temperature can be determined so that the washing water is maintained at a temperature greater than or equal to 55 degrees Celsius for a time greater than or equal to 10 minutes before and after the end of the heating step of the wash water.
    [162] The second temperature set can be greater than or equal to 50 degrees Celsius and less than or equal to 60 degrees Celsius.
    [163] The wash water heating step can be performed without activating the pushbutton.
    [164] The wash water heating step may include a heater actuation step of continuously actuating the heater and a tapping step of actuating the pulser. Pulser actuation can be stopped in the heater actuation step, and heater actuation can be stopped in the knock step.
    [165] The heater actuation step and the knock step can be performed sequentially and repeatedly.
    [166] In another aspect as modalized and broadly described here, a washing machine may include an outer basket to store wash water, an inner basket arranged in the outer basket to accommodate garments for washing, a course selection part that allows selection of a plurality of washing courses, an option selection part that allows selection of a specific option for the washing courses, a washing heater provided with the external basket to heat the washing water, a water supply means to supply the wash water directly to the inner basket, and a controller to determine the wash water level for the main wash based on an amount of wash clothes accommodated in the inner basket (an amount of wash clothes) and a certain course of wash selected through the stroke selection part and control of the water supply means to supply water up to the wash water level for the main wash to d perform the main wash, where when the stroke selection part is selected or a steaming step is selected through the stroke selection part and the option selection part, the controller controls the water supply means so that water is supplied to a wash water level for steam generation less than a wash water level for the main wash before the main wash, and controls the wash heater drive to heat the wash water to a first temperature set to generate steam and thus perform the vaporization step.
    [167] The course selection part may include a steam course which allows the steaming step to be automatically performed by selecting a course, a course with steam available allowing section of the steaming step in addition to course selection, and a course excluding steam excluding the steaming step.
    [168] The steam course may include an allergen course to remove allergen-causing materials, where, when the allergen course is selected, the controller controls actuation of the wash heater after supplying water to the wash water level for the main wash so that the wash water is heated to a second set temperature lower than the first set temperature.
    [169] The option selection part can include a steam selection part that allows you to select the implementation of the steaming step only when the course with available steam is selected through the course selection part, where, when the course with Available steam and vaporizing step are selected, the controller performs control operation so that the stroke with available steam is sequentially performed after the vaporizing step is conducted.
    [170] In another aspect as modalized and broadly described herein, a method for controlling a washing machine to perform a washing course by heating the wash water may include a step of receiving selection of a course to perform a washing step. steaming through stroke selection or stroke selection and selection of a steam option, a wash water for generating the steam supply step of delivering the wash water, and a soap towards a lower surface of a basket internal to a wash water level for steam generation, so that a portion of the garment to be washed is wetted by the wash water, the wash water level being higher than the lower surface of the inner basket and less than one wash water level for the main wash, a steaming step of heating the wash water to a first set temperature and steam generation from the wash water through the trigger. tion of a wash heater provided with an outer basket that accommodates the inner basket, a water for the wash supply step of supplying the wash water up to a predetermined wash water level for the main wash according to the selected course or a wash water level for the main wash set differently according to the selected course and an amount of garment to wash accommodated in the inner basket, and a main wash step of performing the main wash by activating a pushbutton to a wash water level for the main wash.
    [171] Here, the wash water level for the main wash can be set to remain higher than the wash water level for steam generation regardless of the selected stroke and the amount of wash garment accommodated in the inner basket.
    [172] Additionally, the steaming step can be performed before the main wash step regardless of the selected stroke. That is, the main wash can be performed by providing additional water after the steaming step is performed.
    [173] The features of the modalities described above may be implemented in combination with one another unless they are mutually contradictory or exclusive.
    [174] In another aspect, as modalized and amply described here, a method for controlling a washing machine to perform a wash course by heating wash water may include a wash water for generating steam supply step from supplying wash water to a wash water level for steam generation, so that a portion of washing garment accommodated in an inner basket is wetted by wash water, the wash water level being higher than one lower surface of the inner basket and lower than a wash water level for the main wash, a vaporization step of heating the wash water to a first set temperature and generating steam from the wash water by activating a heater provided in an outer basket that accommodates the inner basket, a water for the wash supply step of supplying the wash water to the wash water level for washing m main, and a wash water heating step of reactivating the wash heater and heating the wash water to a second set temperature, the second set temperature being less than the first set temperature.
    [175] In another aspect as modalized and broadly described herein, a method for controlling a washing machine to perform a wash course by heating wash water may include a wash water for generating the supply steam supply step. from wash water to a wash water level for steam generation, so that a portion of laundry garment accommodated in an inner basket is wetted by the wash water, the wash water level being higher than a surface bottom of the inner basket and less than a wash water level for the main wash, a steaming step of heating the wash water to a first set temperature and steam generation from the wash water through the activation of a heater. washing provided with an outer basket that accommodates the inner basket, a water for the washing supply step of supplying the washing water to the washing water level for for the main wash, a wash water heating step of reactivating the wash heater and heating the wash water to a second set temperature, the second set temperature being lower than the first set temperature, and a main washing step, in which the first set temperature and the second set temperature are determined so that the washing water is maintained at a temperature greater than or equal to 55 degrees Celsius for a time greater than or equal to 10 minutes before and after the end of the heating step of the wash water.
    [176] Any reference in this descriptive report to “a modality,” “a modality,” “exemplary modality,” etc., means that a particular feature, structure, or characteristic described in connection with the modality is included in at least one modality of the invention. The appearances of such phrases in various places in the descriptive report are not necessarily all in reference to the same modality. Furthermore, when a particular feature, structure, or feature is described in connection with any modality, it is understood that it is within the purview of one skilled in the art to effect such feature, structure, or feature in connection with another of the modalities.
    [177] Although modalities have been described with reference to a number of illustrative modalities thereof, it should be understood that numerous other modifications and modalities may be developed by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the object combination arrangement within the scope of the disclosure, figures and appended claims. In addition to variations and modifications in component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.
    权利要求:
    Claims (17)
    [0001]
    1. A method of controlling a vertical axis washing machine, comprising an inner basket having an open top portion, the method comprising: receiving a washing stroke selection from a plurality of washing strokes; perceive an amount of laundry received in an inner basket of the washing machine and determine a wash water level for the main wash; supply water to a water level for steam for steam generation based on the selected washing course through the upper portion of the inner basket towards the lower surface of the inner basket so that a garment accommodated in the inner basket becomes wet, where the water level for steam for steam generation is above a lower surface of the inner basket and below the wash water level for the main wash; heat the water supplied to the water level for steam to a first set temperature and generate steam from the heated water and supply the generated steam to the inner basket based on the selected washing course, in which heat the water to the first set temperature comprises activating a heater provided in an outer basket in which the inner basket is received; supply water to the wash water level for the main wash after heating the supplied water to the steam water level; and performing the main wash process for the main wash. characterized by the fact that heating the water supplied to the water level for steam to the first set temperature and generating steam and supplying steam to the inner basket is performed with the inner basket rotating periodically or repeatedly without activating a pulsator provided on a lower surface of the inner basket.
    [0002]
    2. Method according to claim 1, characterized in that supplying water up to the washing water level comprises supplying water to the inner basket through a soap container.
    [0003]
    3. Method according to claim 1, characterized in that it receives a washing course selection, determines a wash water level for the main wash, supplies water up to a water level for steam for steam generation , heating water to a first set temperature and generating steam, supplying water to a wash water level for the main wash, and performing a main wash process are performed sequentially.
    [0004]
    4. Method according to claim 3, characterized in that the plurality of washing courses includes at least one course with available steam, wherein the at least one course with available steam provides selection of whether or not to supply water to the water-to-steam level for steam generation and heat the supplied water to the water-to-steam level to the first set temperature.
    [0005]
    5. Method according to claim 4, characterized in that supplying water to the water-to-steam level and heating the supplied water to the water-to-steam level to the first set temperature are performed in response to the selection of a of at least one steam course available and one steam option.
    [0006]
    6. Method according to claim 5, characterized in that the plurality of washing courses includes at least one course excluding steam, in which to supply water to the water level for steam, heat the water supplied to the water level for steam up to the first set temperature and steam option are not performed.
    [0007]
    7. Method according to claim 3, characterized in that the plurality of washing courses includes a steam course comprising sequentially performing selection of a washing course, determining a wash water level for the main wash, providing water to a water-to-steam level for steam generation, heat the supplied water to the water-to-steam level to a first set temperature and generate steam, supply water to a wash water level for the main wash, and perform a main wash process.
    [0008]
    8. Method according to claim 1, characterized in that the first temperature set is greater than or equal to 60 degrees Celsius.
    [0009]
    9. Method according to claim 8, characterized in that the first temperature set is less than 70 degrees Celsius.
    [0010]
    10. Method according to claim 1, characterized in that the water level for steam is a water level in which an upper portion of a pulsator is submerged.
    [0011]
    11. Method according to claim 1, characterized in that it further comprises, after supplying water to the wash water level, activating the heater again and heating the supplied water to the wash water level to a second temperature established.
    [0012]
    12. Method according to claim 11, characterized in that the second set temperature is lower than the first set temperature.
    [0013]
    13. Method according to claim 12, characterized in that it heats the water to the first set temperature and heats the water to the second set temperature by keeping the water at a temperature that is greater than or equal to 55 degrees Celsius for a period of time that is greater than or equal to 10 minutes before and after the end of water heating up to the second established temperature.
    [0014]
    14. Method according to claim 12, characterized in that the second established temperature is greater than or equal to 50 degrees Celsius and less than or equal to 60 degrees Celsius.
    [0015]
    15. Method according to claim 11, characterized in that heating the water to the second set temperature comprises continuously activating the heater and performing a tapping step comprising activating the pulsator.
    [0016]
    16. Method according to claim 15, characterized in that the actuation of the pulsator is stopped while the heater is continuously actuated, and the actuation of the heater is stopped while performing the knocking step.
    [0017]
    17. Method according to claim 16, characterized in that it continuously activates the heater and performs the tapping step are performed sequentially and repeatedly.
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    同族专利:
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    JP2014147781A|2014-08-21|
    KR20140098484A|2014-08-08|
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    法律状态:
    2018-02-27| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-03-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-15| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-06-22| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-08-31| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/01/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2013-0011195|2013-01-31|
    KR1020130011195A|KR101634190B1|2013-01-31|2013-01-31|washing machine and a control method of the same|
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