• 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:
    PURPOSE: A method for controlling operation of a cooling system of an air conditioner is provided to variably control temperature of chilled air discharged into a room. CONSTITUTION: If operating time accumulated since an air conditioner is normally operated reaches fixed time, a control part resets and re-accumulates the operating time. A valve unit is alternately and repeatedly opened and closed for fixed time so that refrigerant discharged from a constant-speed compressor is directly introduced into a second capillary and an evaporator through a bypass tube when the valve unit is opened. Some of refrigerant passing the compressor is introduced into a condenser through a refrigerant tube, passes a first capillary and the second capillary to be expanded, and is introduced into the evaporator to form a normal refrigerant cycle. Rest of refrigerant passing the compressor passes a bypass tube capillary so that temperature thereof falls a little, passes the second capillary and introduced into the evaporator to form a bypass refrigerant cycle. Temperature of chilled air discharged into a room is relatively higher when the valve unit is opened than when the valve unit is closed, thereby.
    公开号:KR20030068950A
    申请号:KR1020020008762
    申请日:2002-02-19
    公开日:2003-08-25
    发明作者:이창선
    申请人:엘지전자 주식회사；
    IPC主号:
    专利说明:

    Control method of air conditioner cooling system
    [17] The present invention relates to an operation control method of an air conditioner cooling system, and more particularly, to prevent a user from feeling uncomfortable by variably controlling the temperature of cold air discharged to an indoor space.
    [18] Common air conditioners include compressors, condensers, capillaries and evaporators.
    [19] The compressor phase changes the refrigerant into a gaseous state of high temperature and high pressure and feeds it to the condenser, and the condenser changes the gaseous refrigerant into a liquid state and flows it to the expansion device. A fan is installed near the condenser to cool the refrigerant to a predetermined temperature by contacting the outside air with the heat conductive fins.
    [20] The refrigerant reaching the expansion device is expanded and converted to a low temperature low pressure gas refrigerant, which is sent to the evaporator. A fan is installed near the evaporator so that the low temperature refrigerant absorbs heat from the outside air to cool the outside air.
    [21] The cold air generated through the cooling cycle is discharged into the room to lower the indoor space to a constant temperature.
    [22] The cooling system continuously discharges cold air of a constant temperature into the room, and the user's body temperature gradually decreases over time by the cold air and feels comfortable.
    [23] However, when the human body is exposed to cold air for a certain time, the body temperature gradually decreases, and on average, when the body temperature is about 32 to 34 ° C., the user feels comfortable, but when it falls below, the user feels uncomfortable.
    [24] Such discomfort varies depending on the set temperature, the ambient temperature, and the person. When the set temperature of the air conditioner is set low, the time of feeling of discomfort arrives quickly, whereas the time of feeling of discomfort is set when the set temperature is set high. Tend to arrive relatively late.
    [25] Therefore, when the air conditioner has a set temperature and an unpleasant feeling, there are a myriad of cases in accordance with the above-described conditions. Hereinafter, the physiological action occurring in the human body when the air conditioner is operated under the following conditions will be described. do.
    [26] The skin temperature and the physiological feeling of the user, which is changed under the condition that the outdoor temperature is about 33 ° C. and the set temperature of the air conditioner is about 27 ° C. will be described.
    [27] Figure 1 is a graph showing the average temperature change of the human body over time when the discharge of cold air having a constant temperature to the indoor space, Figure 2 is a graph showing the change in the average sensation heat feeling felt by the user as the skin temperature changes 3 is a graph showing a change in the average comfort felt by the user as the average bodily sensation heat feeling of the human body is changed.
    [28] Referring to FIG. 1, when a user enters indoors and runs an air conditioner during outdoor activities, the skin temperature of the human body is maintained at about 32 to 34 ° C. for about 40 minutes. Subsequently, after about 40 minutes have elapsed after the air conditioner is activated, the skin temperature gradually drops below 32 ° C.
    [29] Accordingly, as shown in FIG. 2, the user feels cool from about 40 minutes after the air conditioner is operated, and afterwards, the user feels cold due to the exposure of cold air.
    [30] As a result, while the user feels comfortable from about 40 minutes after the air conditioner is operated as shown in FIG. 3, the user feels unpleasant afterwards, and the discomfort increases gradually over time.
    [31] As described above, since a user exposed to cold air having a constant temperature has a discomfort after a predetermined time elapses, a countermeasure is required.
    [32] In order to solve the above problems, an object of the present invention is to provide an operation control method of an air conditioner cooling system by varying the temperature of the cold air discharged into the room so that the user does not feel uncomfortable even when exposed to the cold for a long time. have.
    [1] 1 is a graph showing the average temperature change of the human body over time when discharging cold air having a constant temperature into the indoor space.
    [2] Figure 2 is a graph showing the change in the average bodily sensation heat feeling felt by the user as the skin temperature changes.
    [3] Figure 3 is a graph showing the change in the average comfort felt by the user as the average bodily sensation heat feeling of the human body changes.
    [4] Figure 4 is a block diagram showing the configuration of the present invention air conditioner cooling system.
    [5] 5 is a block diagram showing an operation control method of the cooling system of FIG.
    [6] Figure 6 is a block diagram showing another configuration of the present invention air conditioner cooling system.
    [7] FIG. 7 is a block diagram illustrating a method for controlling operation of the cooling system of FIG. 6.
    [8] FIG. 8 is a graph showing an average skin temperature change of a human body over time when the driving control method shown in FIGS. 5 and 7 is applied.
    [9] Explanation of symbols on the main parts of the drawings
    [10] 1: constant speed compressor 2: condenser
    [11] 3: evaporator 11a, 11b: refrigerant tube
    [12] 12: capillary 1 13: capillary 2
    [13] 20: bypass pipe 21: solenoid valve
    [14] 22: capillary tube for bypass pipe 31: inverter compressor
    [15] 32: condenser 33: variable expansion valve
    [16] 34: evaporator
    [33] In order to achieve the above object, the present invention relates to an operation control method of the air conditioning conditioner cooling system so that the user does not feel uncomfortable even when exposed to the cold for a long time by varying the temperature of the discharged cold air periodically or aperiodic.
    [34] Hereinafter, an example of an air conditioner cooling system according to the present invention will be described with reference to FIG. 4.
    [35] 4 is a block diagram showing the configuration of the present invention air conditioner cooling system, the air conditioner cooling system includes a constant speed compressor (1), condenser (2), capillary, evaporator (3) and bypass pipe (20) It is done by
    [36] One end of the bypass pipe 20 is fixed to the refrigerant pipe portion 11a positioned between the constant speed compressor 1 and the condenser 2, and the refrigerant pipe portion positioned between the condenser 2 and the evaporator 3. The other end is fixed to 11b. The bypass pipe 20 is provided with a valve means 21 and a capillary tube 22 for the bypass pipe. The valve means 21 presents a solenoid valve.
    [37] In addition, the first capillary tube 12 and the second capillary tube 13 are installed at both ends of the bypass tube 20 at the refrigerant pipe portion 11b between the condenser 2 and the evaporator 3.
    [38] An operation method of the air conditioner cooling system configured as described above will be described with reference to FIG. 5.
    [39] FIG. 5 is a block diagram illustrating an operation control method of the cooling system of FIG. 4. Referring to this, as the air conditioner is operated in a normal operation, the controller integrates the operation time.
    [40] The accumulated operating time is the predetermined time from the time when the air conditioner is normally operated. ), The control unit resets the operation time and then re-integrates the valve means 21 for a predetermined time ( , By alternately repeating the opening and closing operations, the refrigerant discharged from the constant speed compressor 1 immediately passes through the bypass pipe 20 and the second capillary tube 13 and the evaporator 3 when the valve means 21 is opened. Inflow).
    [41] That is, the operating time of opening the valve means 21 and operating the bypass tube capillary tube 22 When it reaches, the valve means 21 is closed and the operation of the bypass pipe capillary 22 is stopped. Then, the operation time accumulated in the control unit = When it is reached, the operation time of the control unit is reset again, and the operation time is re-integrated, the valve means 21 is opened, and the bypass pipe capillary 22 is operated. This operation control method is to be repeated periodically or aperiodically.
    [42] At this time, the control unit , And = Can be set differently depending on the discharge temperature and the outdoor temperature. And Set the same to make the opening and closing operation of the valve means 21 periodically or the And By differently setting the opening and closing operation of the valve means 21 can be aperiodic.
    [43] According to this cooling operation, a part of the refrigerant passing through the compressor is introduced into the condenser 2 through the refrigerant pipe, which is expanded while passing through the first capillary tube 12 and the second capillary tube 13 and then evaporator. It forms the so-called normal refrigerant cycle flowing into (3).
    [44] At the same time, the remaining refrigerant passing through the constant speed compressor 1 passes slightly through the bypass pipe capillary tube 22 installed in the bypass pipe 20, and the temperature decreases slightly. The so-called bypass refrigerant cycle flowing into the evaporator 3 is achieved.
    [45] At this time, the amount of refrigerant flowing into the normal refrigerant cycle is naturally adjusted to be larger than the amount of refrigerant flowing through the bypass refrigerant cycle.
    [46] When the valve means 21 is opened by this operation method, the temperature of the cold air discharged is relatively higher than when the valve means 21 is closed.
    [47] That is, the refrigerant flowing in the normal refrigerant cycle and the refrigerant flowing in the bypass refrigerant cycle are mixed, and the mixed refrigerant is supplied to the evaporator 3 at a relatively higher temperature than the temperature of the refrigerant passing through the normal refrigerant cycle. Therefore, the cold air heat-exchanged with the evaporator 3 becomes relatively high temperature and is discharged to an indoor space.
    [48] For example, the outdoor temperature is 33 ° C and the set temperature of the air conditioner to about 27 ° C and the control unit = 30-50 minutes, = 10-30 minutes, = When set in advance to +10 to 30 minutes, the valve means 21 at the time of operation of the air conditioner Is opened at the time of = 30 to 50 minutes, and thereafter, from the time when the valve means 21 = 10-30 minutes, = Alternately open and close every + 10-30 minutes.
    [49] Of course, in the process of alternately opening and closing the valve means 21 after operating the air conditioner for 30 to 50 minutes, the opening time of the valve means 21 can be made relatively short and the closing time can be set relatively long and vice versa. It can also be understood.
    [50] At this time, when the valve means 21 is closed, the discharge temperature of cold air is maintained at 12 to 17 ° C, while when the valve means 21 is opened, the discharge temperature of cold air is maintained at 18 to 23 ° C.
    [51] In the operation control method of the cooling system, it can be easily derived from the technical idea of the present invention that the time for opening and closing the valve means 21 can be set differently according to the outdoor temperature and the set temperature of the air conditioner. It is also understood that the cold air discharge temperature at the time of closing and opening the valve means 21 can also be set differently according to the outdoor temperature and the set temperature of the air conditioner.
    [52] As described above, by setting the temperature of the cold air discharged to the indoor space periodically or non-periodically, the user does not feel uncomfortable even when exposed to the cold air for a long time.
    [53] In addition, by changing the temperature of the cold air discharged during the cooling operation of the air conditioner to warm the user's skin intermittently to increase the comfort of the human body.
    [54] Another structure of the air conditioner cooling system of the present invention will be described with reference to FIG. 6 as follows.
    [55] 6 is a configuration diagram showing another configuration of the present invention air conditioner cooling system, referring to this, the cooling system of the air conditioner is an inverter compressor 31 for adjusting the amount of refrigerant compressed by changing the operating frequency, and the inverter compressor The condenser 32 condensing the refrigerant discharged from the 31, the variable expansion valve 33 for expanding the refrigerant discharged from the condenser 32, and the refrigerant passing through the variable expansion valve 33 are introduced into the outside air. And an evaporator 34 for cooling by thermal contact.
    [56] An operation control method of the cooling system having such a configuration will be described with reference to FIG. 7 as follows.
    [57] FIG. 7 is a block diagram illustrating an operation control method of the cooling system of FIG. 6.
    [58] Since the inverter compressor 31 is operated at a normal frequency, the accumulated operating time is a predetermined time ( ), The control unit resets and then re-integrates the operation time, and alternately repeats the operation of lowering the operating frequency of the inverter compressor 31 to a predetermined frequency and then restoring the normal operating frequency. Accordingly, the amount of refrigerant flowing into the variable expansion valve 33 and the evaporator 34 is adjusted.
    [59] That is, the normal operation time of the inverter compressor 31 after the air conditioner is activated When reaching, the inverter compressor 31 is operated at an operating frequency lower than the normal frequency and adjusts the variable expansion valve 33 to correspond to the amount of flow refrigerant. Then, the operation time accumulated in the control unit When it reaches, the operating frequency of the inverter compressor 31 is restored to the normal frequency and the opening degree of the variable expansion valve 33 is adjusted to correspond to the amount of the flow refrigerant. And, the time operated at the normal frequency = When it reaches, the control unit resets the operation time of the inverter compressor 31 and then re-accumulates the operation frequency of the inverter compressor 31 again. This method of operation is to be repeated periodically or aperiodically.
    [60] At this time, the control unit , And The time for can be set differently according to the discharge temperature and the outdoor temperature of the cold air, And By setting the same as the operation frequency of the inverter compressor 31 is periodically changed or And By setting differently, the operating frequency can be changed aperiodically.
    [61] As an example of such an operation control method, the outdoor temperature is 33 ° C., and the consumer sets the set temperature of the air conditioner to about 27 ° C. = 30-50 minutes, = 10-30 minutes, = In the case where the preset time is set to +10 to 30 minutes, the inverter compressor 31 has the accumulated operating time from the start of the air conditioner. When 30 to 50 minutes is reached, the operating frequency of the inverter compressor 31 is supplied lower than the normal operating frequency, after which the accumulated operating time of the inverter compressor 31 is = 10-30 minutes, = Perform an operation of increasing or decreasing the operating frequency alternately every + 10-30 minutes.
    [62] Of course, during the operation of changing the operating frequency of the inverter compressor 31, the control unit may be relatively short time for the inverter compressor 31 is operated at a low frequency and relatively long time for operating at a normal frequency, It can also be understood that it can be set or vice versa.
    [63] At this time, when the inverter compressor 31 is operated at a normal frequency, the discharge temperature of the cold air is maintained at 12 to 17 ° C, while when the inverter compressor 31 is operated at a low frequency, the discharge temperature of the cold air is 18 to 23 degrees. Keep at ℃.
    [64] In the operation control method of the cooling system, it can be easily derived from the technical idea of the present invention that the time for changing the operating frequency of the inverter compressor 31 may vary according to the outdoor temperature and the set temperature of the air conditioner. In addition, it is also understood that the cold air discharge temperature at the time of changing the operating frequency may be set differently according to the outdoor temperature and the set temperature of the air conditioner.
    [65] FIG. 8 is a graph showing an average skin temperature change of a human body over time when the driving control method shown in FIGS. 5 and 7 is applied.
    [66] By applying the operation control method of the cooling system as shown in Figures 5 and 7, by allowing the user's skin temperature to be maintained between 32 ~ 34 ℃ as shown in Figure 8 during the cooling operation to make the user feel comfortable.
    [67] In addition, by periodically or aperiodically changing the temperature of the cold air discharged even during the cooling operation of the air conditioner, the skin of the human body is intermittently heated to increase comfort.
    [68] As described above, the present invention is to increase the comfort of the user by changing the temperature of the discharge cold air periodically or aperiodically in accordance with the biorhythm of the human body.
    权利要求:
    Claims (7)
    [1" claim-type="Currently amended] A constant speed compressor, a condenser, a capillary tube and an evaporator are installed, one end is connected to the refrigerant pipe portion between the constant speed compressor and the condenser, and the other end is fixed to the refrigerant pipe portion between the condenser and the evaporator. In the air conditioner cooling system further comprises a bypass pipe is installed,
    Accumulated operation time from a time point at which the air conditioner is operated is a predetermined time ( When the valve means is reached, the valve means ) For a while and then again When the valve means is opened by alternately repeating the closing operation, a portion of the refrigerant discharged from the constant speed compressor is introduced into the evaporator through the bypass pipe, so that when the valve means is opened, The operation control method of the air conditioner cooling system, characterized in that to discharge the high temperature cold air into the interior space.
    [2" claim-type="Currently amended] The method of claim 1,
    If the outdoor temperature is 33 ℃ and the air conditioner's set temperature is set to about 27 ℃,
    The valve means is opened when 30 to 50 minutes have elapsed since the operation time of the air conditioner, and thereafter, the valve means is opened and closed alternately every 10 to 30 minutes after the valve means is opened. Way.
    [3" claim-type="Currently amended] The method of claim 2,
    Operation of the air conditioner system, characterized in that the discharge temperature of the cold air is maintained at 12 ~ 17 ℃ when closing the valve means, while the discharge temperature of the cold air is maintained at 18 ~ 23 ℃ when opening the valve means. Control method.
    [4" claim-type="Currently amended] Inverter compressor that can adjust the amount of refrigerant compressed by changing the operating frequency, a condenser for condensing the refrigerant discharged from the inverter compressor, a variable expansion valve into which the refrigerant discharged from the condenser flows, and the variable expansion valve In the air conditioner cooling system comprising an evaporator to cool by contacting the outside air as the coarse refrigerant is introduced,
    A predetermined time after the air conditioner is operated at a normal frequency ( ), The operating frequency of the inverter compressor is set to a predetermined time ( ) And then back to normal frequency By varying the amount of refrigerant flowing into the evaporator as the recovery operation is alternately repeated, the inverter compressor is operated at a lower frequency than the operating frequency so that the temperature is relatively higher than that at the normal operating frequency. Cooling air is discharged to the indoor space of the air conditioner cooling system operation control method.
    [5" claim-type="Currently amended] The method of claim 4, wherein
    And when the operating frequency of the inverter compressor is lowered to a predetermined frequency and restored to a normal frequency, the opening degree of the variable expansion valve is adjusted to correspond to the amount of the flow refrigerant.
    [6" claim-type="Currently amended] The method of claim 4, wherein
    If the outdoor temperature is 33 ℃ and the air conditioner's set temperature is set to about 27 ℃,
    When 30 to 50 minutes have elapsed from the operation of the air conditioner, the operating frequency of the inverter compressor is lowered and the opening degree of the variable expansion valve is reduced. A method of controlling an air conditioner system, characterized in that it alternately repeats the operation of lowering the frequency or recovering to the normal operating frequency and adjusting the opening degree of the variable expansion valve according to the operating frequency.
    [7" claim-type="Currently amended] The method of claim 6,
    When the operating frequency of the inverter compressor is lowered, the discharge temperature of the cold air is maintained at 12 to 17 ° C, and when the operating frequency of the inverter compressor is restored to the normal frequency, the discharge temperature of the cold air is maintained at 18 to 23 ° C. Operation control method of the air conditioner system, characterized in that.
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    同族专利:
    公开号 | 公开日
    KR100459204B1|2004-12-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2002-02-19|Application filed by 엘지전자 주식회사
    2002-02-19|Priority to KR10-2002-0008762A
    2003-08-25|Publication of KR20030068950A
    2004-12-03|Application granted
    2004-12-03|Publication of KR100459204B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2002-0008762A|KR100459204B1|2002-02-19|2002-02-19|control method of air conditioner cooling system|
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