• 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:
    a method for controlling a clothes dryer and a clothes dryer. The present invention relates to a method for controlling a laundry dryer including a laundry drum (12) with a variable speed of drum rotation (vd) and a drying airflow fan (18) with a variable fan speed (vf). said method comprises the steps of setting a drum rotation speed stroke (vd) or a drum motor power stroke (pd) of the laundry drum (12), and setting a fan rotation speed (vf) and/or fan motor power (pf) of the drying air stream fan (18) based on drum rotation speed (vd) and/or drum motor power (pd) of drum to clothing (12). the fan rotation speed (vf) and/or the fan motor power (pf) of the drying airflow fan (18) is decreased with an increase in the drum rotation speed (vd) and/or with increasing the power of the drum motor (pd), the laundry drum (12). the fan rotation speed (vf) and/or the fan motor power (pf) of the drying airflow fan (18) is increased with a decrease in the drum rotation speed (vd) and/or with decrease in the power of the drum motor (pd) of the laundry drum (12). furthermore, the present invention relates to a corresponding clothes dryer.
    公开号:BR112015011965B1
    申请号:R112015011965-4
    申请日:2013-11-21
    公开日:2021-07-13
    发明作者:Francesco CAVARRETTA；Elena Pesavento；Maurizio Ugel
    申请人:Electrolux Home Products Corporation N.V.；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a method for controlling a clothes dryer with a variable speed of drum rotation and a variable speed of rotation of the fan. Furthermore, the present invention relates to a corresponding clothes dryer.
    [0002] The rotation speed of the drum in a clothes dryer is often constant during the drying cycle. Sometimes a variation of the drum rotation speed is used to optimize drying performance. The drum rotation speed can be changed based on many different situations. For example, a woolen laundry program requires a higher drum rotation speed than the usual drum rotation speed. In the wool cycle, the higher rotation speed of the drum allows a layer of laundry to be formed around the wall of the laundry drum to prevent damage to the laundry. Also in the case of laundry made of synthetic materials, the drum rotation speed may be different. Furthermore, during a specific drying cycle, the drum rotation speed may change, for example, due to inversions or a drum movement required to unravel possible knots in the laundry.
    [0003] Any change in drum rotation speed can have a non-negligible impact on the overall performance of the machine. The drying cycle is generally negatively affected when the laundry drum is not running at a normalized speed at which drying performances are maximized. However, as mentioned above, drum speed variations from the standard speed are possible to meet different laundry drying requirements.
    [0004] In particular, the variation of the drum rotation speed in a clothes dryer with a heat pump system disturbs the overall performances of the clothes dryer.
    [0005] It is an object of the present invention to provide a method for controlling a clothes dryer with a variable speed of drum rotation, in order to avoid or mitigate the aforementioned problems, wherein said method improves both energy performance. , such as cycle time. It is a further object of the present invention to provide a corresponding clothes dryer.
    [0006] The object of the present invention is achieved through the method according to claim 1.
    [0007] The method is provided for the control of a clothes dryer including a clothes drum with a variable speed of drum rotation and a drying airflow fan with a variable speed of fan rotation, said method comprising the steps of:- setting a drum rotation speed stroke or a laundry drum drum motor power stroke, and- setting a fan rotation speed and/or laundry fan motor power stroke. drying airflow fan, based on the drum rotation speed and/or laundry drum drum motor power, where the fan rotation speed and/or the washing fan fan motor power drying air flow is decreased with an increase in the drum rotation speed and/or with an increase in the laundry drum drum motor power,- and where the fan speed and/or motor power from the summer fan drum drying air stream is increased with a decrease in drum rotation speed and/or decrease in laundry drum drum motor power.
    [0008] The main idea of the present invention is to adapt the speed of rotation of the fan and/or the power of the fan motor of the drying airflow fan to the speed of rotation of the drum and/or power of the drum motor of the laundry drum in order to maximize drying performance despite drum speed variations during the drying cycle, and at the same time to keep the energy consumption associated with the drum motor and fan motor within one level predetermined.
    [0009] In particular, the Applicant has found that when the drum speed decreases (for various reasons) an adequate increase in the rotation speed of the fan recovers an expected drying performance without exceeding a predetermined overall energy consumption. In fact, it has been found that an increase in the level of fan rotation speed compensates for the decreased drum rotation speed in terms of drying efficiency, so that the overall drying performance is kept close to a maximized level and at the same time, power consumption due to drum motor and fan motor are kept within reasonable range.
    [0010] An increase in the speed of rotation of the fan generates a higher flow rate of the drying air stream, which improves the drying efficiency. It was found that, in the case of a clothes dryer with a heat pump system that includes a compressor, an evaporator, a condenser and expansion means, the increase in energy consumption due to the increase in the speed of rotation of the fan is more than which is offset by the decrease in energy consumption in the compressor of the heat pump system. The higher drying air current, generated by the increased fan rotation speed, improves heat exchange in the condenser and evaporator, which results in a lower level of compressor stress.
    [0011] Preferably, according to the present invention, the stroke (profile speed over time, standard speed over time) of the drum rotation speed or the stroke of the power of the drum drum motor for laundry is set according to a program selected by a user, and/or according to an input by the user, and/or according to an estimated/detected amount of laundry in the laundry drum.
    [0012] In practice, the pattern of speed/power of the laundry drum, over time, changes in response to selection made by the user and/or in response to user input, particularly textiles to be dried, the initial moisture of the laundry, the final moisture of the laundry to be achieved at the end of the drying cycle, the drum movement for anti-wrinkle option.
    In addition, the laundry drum speed/power pattern over time changes in response to an estimated/detected amount of laundry in the laundry drum.
    [0014] In particular, the speed of rotation of the fan of the drying air stream fan linearly decreases with increasing speed of rotation of the drum of the laundry drum.
    [0015] According to another example, the power of the drying airflow fan fan motor decreases linearly with increasing power of the laundry drum drum motor.
    [0016] In addition, the fan rotation speed of the drying airflow fan can linearly decrease with increasing power of the laundry drum drum motor.
    [0017] Similarly, the power of the blower motor of the drying airflow blower can linearly decrease with increasing rotational speed of the laundry drum drum.
    [0018] Preferably, a predetermined threshold value of the drum rotation speed is set, and if the drum rotation speed is less than the threshold value, then the fan rotation speed is set to a first rotation speed value. fan speed, whereas if the drum rotation speed is greater than the threshold value, then the fan rotation speed is set to a second fan rotation speed value. The first fan rotation speed value is higher than the second fan rotation speed value.
    [0019] Preferably, the rotation speed of the drying air stream fan or the power of the drying air stream fan motor decreases step by step with increasing rotation speed of the laundry drum drum, or by increasing the power of the laundry drum drum motor.
    [0020] In particular, the method is provided for a clothes dryer with a heat pump system, in which a rotation speed and/or a power of a compressor is controlled as a function of the rotation speed of the fan of the drying air stream.
    [0021] In this case, the rotation speed or the power of the compressor may increase with increasing the rotation speed of the drying airflow fan fan.
    [0022] For example, the rotation speed of the drum of the laundry drum is variable between 10 rpm and 70 rpm, in particular between 20 rpm and 60 rpm.
    [0023] The fan rotation speed of the drying air stream fan can be variable between 2000 rpm and 4000 rpm, in particular between 2700 rpm and 3500 rpm.
    [0024] The object of the present invention is further achieved by the clothes dryer according to claim 13.
    [0025] The clothes dryer includes a laundry drum driven by a drum motor and a drying air blower driven by a fan motor, wherein the drum motor and fan motor are independently controlled or controllable each other by a control unit, and in which the clothes dryer is provided for the method mentioned above.
    [0026] Since the drum motor and the fan motor are controlled or controllable independently of each other, the method can easily be carried out by such a laundry drum.
    [0027] For example, the clothes dryer comprises an airflow circuit driven by the drying airflow fan.
    [0028] In particular, the clothes dryer comprises a heat pump system, in which a rotation speed and/or a power of a compressor are controlled or controllable by the control unit.
    [0029] Preferably, the rotation speed or power of the compressor increases with increasing speed of rotation of the drying airflow fan fan.
    [0030] Furthermore, the clothes dryer may comprise an air-to-air heat exchanger thermally interconnected between the clothes dryer's air current circuit and the ambient air.
    [0031] Finally, the air-air heat exchanger can correspond to at least one ambient air fan controlled or controllable by the control unit.
    [0032] The new and inventive features understood as features of the present invention are presented in the appended claims.
    [0033] The invention will be described in more detail with reference to the drawings, in which FIG 1 illustrates a schematic diagram of a clothes dryer with a heat pump system, according to a first embodiment of the present invention, FIG 2 illustrates a diagram Fig. 3 illustrates a schematic diagram of the correlation between a fan rotation speed and a drum rotation speed in accordance with the present invention, FIG. FIG 4 illustrates a schematic diagram of the correlation between a fan motor power and a drum motor power in accordance with the present invention; FIG 5 illustrates a schematic diagram of the correlation between fan rotation speed and drum motor power. drum according to the present invention, FIG 6 illustrates a schematic diagram of the correlation between fan motor power and drum rotation speed. r according to the present invention, FIG 7 illustrates a schematic diagram of another example of the correlation between the speed of rotation of the fan and the speed of rotation of the drum according to the present invention, FIG 8 illustrates a schematic diagram of another example of the correlation between the fan rotation speed and the drum rotation speed according to the present invention, FIG 9 illustrates a schematic diagram of the drum rotation speed as a function of time according to an example of the present invention, FIG 10 illustrates a schematic diagram of drum rotation speed as a function of time in accordance with another example of the present invention, eFIG 11 illustrates a schematic diagram of drum rotation speed as a function of time in accordance with another example of the present invention.
    [0034] FIG 1 illustrates a schematic diagram of a clothes dryer with a heat pump system, according to a first embodiment of the present invention.
    [0035] The heat pump system comprises an air current circuit 10, preferably closed, and a closed refrigerant circuit 20. The air current circuit 10 is formed by a laundry treatment chamber 12, preferably , a rotating drum, an evaporator 14, a condenser 16 and a drying air stream fan 18. The refrigerant circuit 20 is formed by a compressor 22, the condenser 16, an expansion device 24 and the evaporator 14. For example, the expansion device 24 is an expansion valve. Evaporator 14 and condenser 16 are heat exchangers and form thermal interconnections between air stream circuit 10 and refrigerant circuit 20.
    [0036] For a specific type of refrigerant, for example Carbon Dioxide, the heat pump system can operate at least at the critical pressure of the refrigerant, without phase change, and in this case, the evaporator is a heater to gas and the condenser is a gas cooler.
    The drying air stream fan 18 is driven by a fan motor 26. The laundry drum 12 is driven by a drum motor 28. The fan motor 26 and drum motor 28 are controlled by a control unit 30. The fan motor 26 is connected to the control unit 30 by a fan control line 32. The drum motor 28 is connected to the control unit 30 by a drum control line 34.
    [0038] In the air stream circuit 10, the evaporator 14 cools and dehumidifies the air stream, after the hot, moist air stream has passed the laundry drum 12. Then, the condenser 16 heats the air stream, before the air stream is again inserted into the laundry drum 12. The air stream is driven by the drying air stream fan 18, arranged between the condenser 16 and the laundry drum 12. In the refrigerant circuit 20, a refrigerant is compressed and heated by compressor 22, cooled and condensed in condenser 16, expanded in expansion device 24, then vaporized and heated in evaporator 14.
    The control unit 30 controls a fan rotation speed vf and/or a fan motor power Pf of the drying airflow fan 18 through the fan control line 32. Similarly, the unit control 30 controls a drum rotation speed vd and/or a drum motor power Pd of the laundry drum 12 via drum control line 34. The fan speed vf and/or the power of the drum motor fan Pf are controlled based on drum rotation speed vd and/or drum motor power Pd according to an empirical relationship (which applicant has verified by testing) depending on the characteristics of the heat pump system and the current circuit of air. Said empirical relationships between fan rotation speed vf and fan motor power Pf, on the one hand, and drum rotation speed vd and drum motor power Pd, on the other hand, ensure that efficiency The dryer's drying machine is maintained with minimal energy consumption. In general, one or more parameters related to the rotation of the drying air stream fan 18 are controlled based on one or more parameters related to the rotation of the laundry drum 12.
    [0040] FIG 2 illustrates a schematic diagram of a clothes dryer with an air-to-air condenser 36, according to a second embodiment of the present invention.
    [0041] The clothes dryer comprises the closed air stream circuit 10. The air stream circuit 10 of the second mode is formed by the laundry drum 12, the air-air condenser 36, the drying air stream fan 18 and an ambient air fan 38. The air to air condenser 36 is an air to air heat exchanger and forms a thermal interconnection between the air stream circuit 10 and the ambient air. The air-to-air condenser 36 includes two separate channels. A first channel is provided for the air stream from the air stream circuit 10. A second channel is provided for the ambient air. Ambient air is blown through the second channel by the ambient air fan 38.
    The drying air stream fan 18 is driven by the fan motor 26. The laundry drum 12 is driven by the drum motor 28. The fan motor 26 and the drum motor 28 are controlled by the control unit 30. Fan motor 26 is connected to control unit 30 by fan control line 32. Similarly, drum motor 28 is connected to control unit 30 by drum control line 34.
    [0043] The air-air condenser 36 cools and dehumidifies the air stream with ambient air, after the hot and humid air stream has passed through the laundry drum 12. Then, the air stream is heated by a heating device , for example, by an electric heating element, before the air stream is again inserted into the laundry drum 12. Said heating device is not shown. The air stream is driven by the drying air stream fan 18, arranged between the air-air condenser 36 and the laundry drum 12.
    [0044] The control unit 30 controls the rotation speed of the fan vf and/or the power of the fan motor Pf of the drying airflow fan 18 through the fan control line 32. control 30 controls drum rotation speed vd and/or drum motor power Pd of laundry drum 12 via drum control line 34. Fan rotation speed vf and/or fan motor power Pf are controlled on the basis of drum rotation speed vd and/or drum motor power Pd according to an empirical relationship depending on the characteristics of the tumble dryer, in particular the airflow circuit. The empirical relationship between fan rotation speed vf and fan motor power Pf, on the one hand, and drum rotation speed vd and/or drum motor power Pd, on the other hand, ensures that a predetermined energy consumption is not exceeded and that the drying efficiency of the clothes dryer is maintained. In general, one or more parameters relating to the rotation of the drying air stream fan 18 are controlled on the basis of one or more parameters relating to the rotation of the laundry drum 12.
    [0045] The following diagrams, in FIG. 3 to FIG 6, show examples of correlations between the speed of rotation of the fan vf or the power of the fan motor Pf, on the one hand, and the speed of rotation of the drum vd or a drum engine power Pd, on the other hand.
    [0046] FIG 3 illustrates a schematic diagram of the correlation between the rotation speed of the fan vf and the rotation speed of the drum vd according to the present invention. The speed of rotation of fan vf decreases with increasing speed of rotation of drum vd. In this example, the fan rotation speed vf linearly decreases from 3500 rpm to 2700 rpm, while the drum rotation speed vd increases from 20 rpm to 50 rpm.
    [0047] The following table shows this example of the correlation between the speed of rotation of the fan vf and the speed of rotation of the drum vd:

    [0048] Similarly, the diagram shown in FIG 3 represents a linear relationship between drum rotation speed vd and fan rotation speed vf.
    [0049] FIG 4 illustrates a schematic diagram of the correlation between a fan motor power and a drum motor power, according to the present invention. Fan motor power Pf decreases with an increase in drum motor power Pd. In this example, the Pf fan motor power decreases linearly from 150 W to 110 W, while the Pd drum motor power increases from 150 W to 220 W.
    [0050] The following table shows this example of the correlation between drum motor power Pd and fan motor power Pf: drum motor power Pd: fan motor power Pf:

    [0051] Similarly, the diagram shown in FIG 4 represents a linear relationship between the drum motor power Pd and the fan motor power Pf.
    [0052] FIG. 5 illustrates a schematic diagram of the correlation between the speed of rotation of the fan vf and the power of the drum motor Pd according to the present invention. Fan rotation speed vf decreases with increasing drum motor power Pd. In this example, fan rotation speed vf linearly decreases from 3500 rpm to 2700 rpm, while drum motor power Pd increases from 150 W to 220 W.
    [0053] The following table shows the example of the correlation between the power of the drum motor Pd and the speed of rotation of the fan vf:

    [0054] Similarly, the diagram shown in FIG 5 represents a linear relationship between drum motor power Pd and fan rotation speed vf.
    [0055] FIG 6 illustrates a schematic diagram of the correlation between fan motor power Pf and drum rotation speed vd according to the present invention. The power of the fan motor Pf decreases with an increase in the rotation speed of the motor vd. In this example, fan motor power Pf linearly decreases from 150 W to 110 W, while drum rotation speed vd increases from 20 rpm to 55 rpm.
    [0056] The following table shows the example of the correlation between the power of the drum motor Pd and the power of the fan motor Pf:


    [0057] Similarly, the diagram shown in FIG 6 represents a linear relationship between drum rotation speed vd and fan motor power Pf.
    [0058] FIG 7 illustrates a schematic diagram of another example of the correlation between the rotation speed of the fan vf and the rotation speed of the drum vd according to the present invention. In this example, the fan speed vf can take a first fan speed value vf1, or a second fan speed value vf2. The first fan speed value vf1 is higher than the second fan speed value vf2. A predetermined threshold value vdth of the drum rotation speed vd is set. If drum rotation speed vd is less than the threshold value vdth, then fan rotation speed vf assumes the first fan rotation speed vf1 value. If drum rotation speed vd is greater than the threshold value vdth, then fan rotation speed vf assumes the second fan rotation speed vf2 value.
    [0059] FIG 8 illustrates a schematic diagram of another example of the correlation between the rotation speed of the fan vf and the rotation speed of the drum vd according to the present invention. The diagram in Figure 8 is similar to the diagram in Figure 3. However, the diagram in Figure 3 is linear, whereas the diagram in Figure 8 is ladder-shaped. The fan speed vf in FIG. 8 can assume a series of discrete fan speed values.
    [0060] FIG 9 illustrates a schematic diagram of the rotation speed of the drum vd as a function of time according to an example of the present invention. At the beginning, the rotation speed of drum vd increases linearly. Then, drum rotation speed vd assumes a constant steady state level.
    [0061] The constant steady state level of the drum rotation speed is defined according to a program selected by a user, and/or according to an input by the user, and/or according to an estimated quantity/ detected laundry in the laundry drum.
    [0062] Therefore, different user selections or different laundry amounts loaded into the laundry drum lead to different constant steady state levels of the drum rotation speed. The fan rotation speed and/or the fan motor power of the drying airflow fan is adjusted accordingly.
    [0063] FIG. 10 illustrates a schematic diagram of the rotation speed of the drum vd as a function of time according to another example of the present invention. In this example, the direction of rotation of the laundry drum 12 is periodically reversed. The clockwise or counterclockwise rotation speed of the drum is set according to a program selected by a user, and/or according to an input by the user, and/or according to an estimated/detected amount of laundry in the drum for clothes.
    [0064] Therefore, different user selections or different amounts of laundry loaded into the laundry drum lead to different patterns of drum rotation speed and the fan rotation speed and/or the power of the fan fan motor. drying air current is adjusted accordingly.
    [0065] FIG 11 illustrates a schematic diagram of the rotation speed of the drum vd as a function of time according to another example of the present invention. At the beginning, the rotation speed of drum vd increases linearly. Then the rotation speed of drum vd oscillates around an average value. The drum rotation speed pattern and the average value are set according to a program selected by a user, and/or according to an input by the user, and/or according to an estimated/detected amount of laundry in the drum for clothes.
    [0066] Therefore, different user selections or different amounts of laundry loaded into the laundry drum lead to different average values of drum rotation speed patterns and fan rotation speed and/or fan motor power of the drying airflow fan is adjusted accordingly.
    [0067] Applicant has found that the efficiency of the heat pump system depends on the flow rate of the airflow in the airflow circuit 10. The flow rate of the airflow is defined by the speed of rotation of the fan vf. The greater the flow of airflow, the more efficient the heat pump system will be. As such, it would be advantageous to increase the fan rotation speed vf when the drum rotation speed decreases. The higher energy consumption of the fan motor 26 is, in fact, more than offset by the reduced energy consumption of the compressor, which runs in a more favorable condition when the drying air current increases.
    [0068] Therefore, an adequate increase in the speed of rotation of the fan vf recovers the expected performances without exceeding the predetermined global power consumption.
    [0069] The present invention is also useful for a heat pump system with a variable speed compressor. In particular, the rotation speed or power of the compressor 22 is adjusted in accordance with the rotation speed of the fan vf. The rotation speed or power of the compressor 22 increases as the rotation speed of the fan vf increases.
    [0070] In the case of ventilated clothes dryers, an airflow rate allows for a higher drying capacity, as the airflow air is discharged after flowing through the laundry drum 12 instead of being recirculated . Also, the greater the airflow flow of the airstream, the greater the amount of heat adsorbed from the environment. This results in reduced drying time and increased efficiency.
    [0071] In general, it has been found that, in clothes dryers, in which the rotation speed of the vd drum is modified according to some logic and/or parameters and/or amount of laundry loaded into the laundry drum , the overall performances of the tumble dryer are greatly affected, and in particular the performances tend to decrease when the rotation speed of the vd drum is reduced. Therefore, it is possible to increase the speed of rotation of the fan vf, in order to recover the expected efficiency of the clothes dryer, without exceeding a predetermined energy consumption. In conclusion, the idea of the present invention is to regulate the rotation speed of the fan vf based on the rotation speed of the drum vd according to an empirical relationship. Said empirical relationship depends on the characteristic of the machine and ensures that it does not exceed the predetermined energy consumption, while maintaining the drying efficiency of the clothes dryer.
    [0072] Preferably, the control unit is adapted to adjust the rotation speed of the laundry drum based on the amount of laundry loaded into the laundry drum. Preferably, the rotation speed of the drum decreases as the amount of laundry increases.
    [0073] The amount of load inside the laundry drum 12 can be detected by a detection device in or near said laundry drum 12.
    [0074] Preferably, electrodes can be provided to detect the electrical resistance and/or the conductivity of the laundry within the drum. The noise and variation of the electrical signal associated with the detected electrical resistance and/or the conductivity of the clothing are used to estimate the quantity of clothing.
    [0075] The amount of load in the laundry drum 12 can further be estimated by the temperature difference of the drying air stream between an inlet and an outlet of the laundry drum 12. The temperature difference of the inlet and outlet of the laundry drum 12 is related to the amount of water extracted from the laundry and decreases in the case of a small heat exchange between the drying air stream and the laundry. Similarly, the amount of charge in the laundry drum 12 can be detected by the temperature difference of the drying air stream between an inlet and an outlet of the air-air condenser 36 or the evaporator 14. This temperature difference is also related to the amount of water extracted from the clothing. However, the temperature difference between the inlet and outlet of the air-air condenser 36 or the evaporator 14 increases in the case of a small heat exchange between the drying air stream and the laundry.
    [0076] In addition, the amount of charge in the laundry drum 12 can be estimated by detecting an electrical parameter of the laundry drum motor. Motor current, motor voltage, motor power provide the variation in response to the amount of laundry and an estimate of the amount of laundry can be derived from these parameters as the drum rotates.
    [0077] In addition, the torque of the laundry drum motor can be used to estimate the amount of laundry.
    [0078] The basic idea of the invention allows a way to keep the energy consumption of the fan motor 26 and drum motor 28 at a low average level without penalizing the drying performance of the machine. In particular, the invention provides a precise and efficient energy balance between the energy absorbed by the fan motor 26 and the drum motor 28. When drum rotation speed vd and drum motor power Pd are low, then the motor of the fan 26 and the drum motor 28 can be set to higher speed values and higher powers so that the energy saved in the drum motor 28 is transferred to the fan motor 26.
    [0079] Furthermore, in that case, a higher speed level of the fan motor 26 is followed by an increase in flow rate and better performances. On the other hand, when drum rotation speed vd and drum motor power Pd are relatively high, then fan rotation speed vf is set to a lower level in order to balance the relatively high power consumption of the drum motor 28 and maintain an overall low power level. Since the rotation speed of the fan vf is in any case sufficiently high, the drying performances are kept at a satisfactory level and the energy consumption of the machine is kept within predetermined limits.
    [0080] Although illustrative embodiments of the present invention have been described herein with reference to the accompanying drawings, it is to be understood that the present invention is not limited to these specific embodiments, and that various other changes and modifications can be made thereto by a skilled in the art without departing from the scope or spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as defined by the appended claims. REFERENCE NUMBERS 10 air stream channel12 laundry drum14 evaporator16 condenser18 drying air stream fan20 refrigerant circuit22 compressor24 expansion device26 fan motor28 drum motor30 control unit32 fan control line34 drum control line36 air condenser -ar38 ambient air fanvf fan rotation speedvd drum rotation speedPf fan motor powerPd drum motor powervf1 first fan rotation speed valuevf2 second rotation speed value dafanvdth drum rotation speed threshold value
    权利要求:
    Claims (15)
    [0001]
    1. METHOD FOR CONTROLLING A DRESSER DRYER, including a heat pump system and/or an air current circuit (10), a laundry drum (12) operated with a variable speed of drum rotation (vd) by a drum motor (28) and a drying air current fan (18) driven with a variable speed of fan rotation (vf) by a fan motor (26), the method comprising the step of:- setting of a drum rotation speed stroke (vd) or a power stroke of the drum motor (Pd) of the laundry drum (12), the method being characterized in that it further comprises the steps of:- definition of a speed of fan speed (vf) and/or a fan motor power (Pf) of the drying airflow fan (18) based on drum rotation speed (vd) and/or drum motor power ( Pd) of the laundry drum (12),- where the fan rotation speed (vf) and/or fan motor power (Pf) of the fan The drying air stream (18) is reduced with an increase in the drum rotation speed (vd) and/or with an increase in the drum motor power (Pd) of the laundry drum (12),- and in that the fan rotation speed (vf) and/or fan motor power (Pf) of the drying airflow fan (18) is increased with a decrease in the drum rotation speed (vd) and/or decrease of the drum motor power (Pd) of the laundry drum (12).
    [0002]
    2. METHOD, according to claim 1, characterized in that the drum rotation speed stroke (vd) or the drum motor power stroke (Pd) of the laundry drum (12) is defined according to a selected program by a user and/or according to an input by the user and/or according to an estimated load in the laundry drum (12).
    [0003]
    3. METHOD, according to any one of claims 1 to 2, characterized in that the speed of rotation of the fan (vf) of the drying airflow fan (18) decreases linearly with the increase of the speed of rotation of the drum (vd) of the laundry drum (12).
    [0004]
    4. METHOD according to any one of claims 1 to 3, characterized in that the power of the fan motor (Pf) of the drying airflow fan (18) decreases linearly with the increase of the power of the drum motor (Pd) of the laundry drum (12).
    [0005]
    5. METHOD, according to any one of claims 1 to 4, characterized in that the speed of rotation of the fan (vf) of the drying airflow fan (18) decreases linearly with the increase in the power of the drum motor (Pd) of the laundry drum (12).
    [0006]
    6. METHOD, according to any one of claims 1 to 5, characterized in that the power of the fan motor (Pf) of the drying airflow fan (18) decreases linearly with the increase of the drum rotation speed (vd) of the laundry drum (12).
    [0007]
    7. METHOD according to any one of claims 1 to 6, characterized in that a predetermined threshold value of the drum rotation speed is defined and, if the drum rotation speed (vd) is lower than the threshold value, then the speed of fan rotation (vf) is set to a first fan rotation speed (vf1) value, whereas if the drum rotation speed (vd) is greater than the threshold value, then the fan rotation speed ( vf) is set to a second fan speed value (vf2), where the first fan speed value (vf1) is greater than the second fan speed value (vf2).
    [0008]
    8. METHOD, according to any one of claims 1, 2 and 7, characterized by the speed of rotation of the fan (vf) of the drying airflow fan (18) or the power of the fan motor (Pf) of the drying fan. drying air stream (18) decrease step by step with the increase in the rotation speed of the drum (vd) of the laundry drum (12), or with the increase of the power of the drum motor (Pd) of the laundry drum ( 12).
    [0009]
    9. METHOD according to any one of claims 1 to 8, characterized in that the method is provided for a clothes dryer with a heat pump system, in which a rotation speed and/or a power of a compressor (22) is controlled as a function of the fan rotation speed (vf) of the drying airflow fan (18).
    [0010]
    10. METHOD, according to claim 9, characterized in that the speed of rotation or the power of the compressor (22) increase with the increase in the speed of rotation of the fan (vf) of the drying air stream fan (18).
    [0011]
    11. METHOD, according to any one of claims 1 to 10, characterized in that the drum rotation speed (vd) of the laundry drum (12) is variable between 10 rpm and 70 rpm, in particular between 20 rpm and 60 rpm.
    [0012]
    12. METHOD, according to any one of claims 1 to 11, characterized in that the speed of rotation of the fan (vf) of the drying air stream fan (18) is variable between 2000 rpm and 4000 rpm, in particular between 2700 rpm and 3500 rpm.
    [0013]
    13. CLOTHES DRYER, including a laundry drum (12) driven by a drum motor (28) and a drying airflow fan (18) driven by a fan motor (26), characterized by the drum motor (28) and the fan motor (26) are controlled or controllable independently of each other by a control unit (30), and wherein the clothes dryer is provided for the method as defined in any one of claims 1 to 12 .
    [0014]
    CLOTHES DRYER according to claim 13, characterized in that the clothes dryer comprises a heat pump system with a compressor (22).
    [0015]
    15. CLOTHES DRYER according to claim 14, characterized in that a rotation speed and/or a power of a compressor (22) is controlled or controllable by the control unit (30), preferably as a function of the speed of fan rotation (vf) of the drying airflow fan (18)
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    同族专利:
    公开号 | 公开日
    CN104838056A|2015-08-12|
    CN104838056B|2017-02-22|
    US20150299934A1|2015-10-22|
    EP2922993B1|2017-06-28|
    EP2922993A1|2015-09-30|
    BR112015011965A2|2018-05-15|
    AU2013349694A1|2015-06-04|
    WO2014079934A1|2014-05-30|
    EP2735642A1|2014-05-28|
    US9534340B2|2017-01-03|
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    法律状态:
    2018-05-29| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-06| B09X| Decision of grant: republication|
    2021-07-13| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 21/11/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP12194169.4|2012-11-26|
    EP12194169.4A|EP2735642A1|2012-11-26|2012-11-26|A method for controlling a laundry dryer with a variable drum rotation speed and a variable fan rotation speed|
    PCT/EP2013/074392|WO2014079934A1|2012-11-26|2013-11-21|A method for controlling a laundry dryer with a variable drum rotation speed and a variable fan rotation speed|
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