JP2012007779A - Air conditioner - Google Patents

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Publication number
JP2012007779A
JP2012007779A JP2010142499A JP2010142499A JP2012007779A JP 2012007779 A JP2012007779 A JP 2012007779A JP 2010142499 A JP2010142499 A JP 2010142499A JP 2010142499 A JP2010142499 A JP 2010142499A JP 2012007779 A JP2012007779 A JP 2012007779A
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indoor
humidity
set
operation
temperature
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JP2010142499A
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Japanese (ja)
Inventor
Kazuhide Mizutani
Motonari Yamaguchi
元就 山口
和秀 水谷
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Daikin Industries Ltd
ダイキン工業株式会社
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Priority to JP2010142499A priority Critical patent/JP2012007779A/en
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Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner achieving both of reduction of power consumption and comfort.SOLUTION: The air conditioner includes a temperature sensor 15 sensing room temperature and a humidity sensor 17 sensing room humidity, and a control unit 21 carrying out a thermostat-off operation to stop a compressor 11 by comparing the room temperature sensed by the temperature sensor 15 with a set temperature. During the thermostat-off operation in a cooling operation, the control unit 21 compares the room humidity sensed by the humidity sensor 17 with set humidity, and when the room humidity is lower than the set humidity, the control unit carries out control of stopping an indoor blower 13 or control of reducing the rotational speed of the indoor blower 13.

Description

  The present invention relates to an air conditioner.

  Conventionally, in an air conditioner, for example, in a cooling operation, a preset temperature set in advance is compared with an actually measured temperature in a room, and if the measured temperature is higher than the set temperature, a thermo-on that adjusts the room temperature by operating the compressor is performed. When the operation is performed and the actually measured temperature is lower than the set temperature, a thermo-off operation for stopping the compressor is performed. However, since the power consumption may increase only by uniformly executing the above control, various attempts have been made to improve this.

  For example, Patent Document 1 discloses an air conditioner that selectively uses a plurality of control modes for the purpose of achieving both reduction in power consumption and comfort. In this air conditioner, a control mode for performing capacity control of the outdoor unit and a control mode for performing intermittent operation control of the indoor unit are selectively used based on, for example, a discomfort index. The capacity control of the outdoor unit controls the capacity of the compressor during the thermo-on operation, and the intermittent operation control of the indoor unit controls the switching timing between the thermo-on operation and the thermo-off operation. Patent Document 1 describes that by performing the above control, both reduction of power consumption and improvement of the indoor environment can be achieved.

Japanese Patent Laid-Open No. 2002-243241

  By the way, in the conventional air conditioning apparatus such as Patent Document 1, the air blower of the indoor unit is operated to blow out the cold air whose temperature is adjusted by the indoor unit from the indoor unit to the room during the thermo-on operation. In order to improve the cool feeling even during operation, control to keep operating the blower of the indoor unit is usually performed.

  However, when performing control to continue operating the blower of the indoor unit even during the thermo-off operation, there is a problem that the cool feeling is improved while the power consumption is increased.

  Therefore, the present invention has been made in view of such a point, and an object of the present invention is to provide an air conditioner that combines power consumption reduction and comfort.

  The air conditioner of the present invention is preset with a compressor (11), an indoor fan (13), a temperature sensor (15) for detecting indoor temperature, and a humidity sensor (17) for detecting indoor humidity. The storage unit (19) in which at least one set temperature and at least one set humidity are stored, the compressor (11), and the indoor blower (13) can be controlled and detected by the temperature sensor (15). And a controller (21) that performs a thermo-off operation for comparing the indoor temperature with the set temperature and stopping the compressor (11). The controller (21) compares the indoor humidity detected by the humidity sensor (17) with the set humidity during the thermo-off operation in the cooling operation, and the indoor humidity is lower than the set humidity. Control which stops an indoor air blower (13) or control which makes the rotation speed of the said indoor air blower (13) small is performed.

  In this configuration, during the thermo-off operation in the cooling operation, the indoor blower (13) is not continuously operated as in the prior art, but the indoor blower (13) is stopped or the indoor blower when the indoor humidity is lower than the set humidity. Since the rotational speed of (13) is reduced, power consumption can be reduced. In addition, when the indoor humidity is lower than the set humidity, there is little need to further improve the cool feeling, so that the comfort can be prevented from being impaired. Therefore, according to this configuration, it is possible to achieve both reduction in power consumption and comfort.

  Moreover, in the preferable structure of this invention, while the said memory | storage part (19) has memorize | stored the said some setting humidity, the operating condition of the said indoor air blower (13) corresponding to each setting humidity is memorize | stored. The control unit (21) controls to change the rotational speed of the indoor blower (13) stepwise based on the indoor humidity detected by the humidity sensor (17) and the operating conditions during the thermo-off operation. Execute.

  In this configuration, in the thermo-off operation, control is performed to change the rotational speed of the indoor blower (13) stepwise based on the indoor humidity detected by the humidity sensor (17) and the operating conditions. The indoor blower (13) can be controlled more finely according to the environmental change. Thereby, reduction of power consumption and comfort can be improved more.

  In a preferred configuration of the present invention, the storage unit (19) stores timing information in which timing for comparing the indoor humidity and the set humidity is preset, and the control unit (21) During the thermo-off operation in the cooling operation, when the indoor blower (13) is stopped, the indoor humidity to be compared with the set humidity is detected a predetermined time before the indoor humidity is detected based on the timing information. Control for operating the blower (13) is executed.

  In this configuration, when the indoor blower (13) is stopped during the thermo-off operation, the indoor blower (13) is operated a predetermined time before the indoor humidity is detected, so that air stagnation is suppressed in the room. Can be made to flow. Thereby, indoor air is made more uniform and the detection accuracy by the humidity sensor (17) can be improved.

  Another air conditioner of the present invention includes a compressor (11), an indoor blower (13), a temperature sensor (15) for detecting the indoor temperature, a preset first set temperature, and the first set temperature. The storage unit (19) in which a plurality of set temperatures including a second set temperature having a smaller value can be stored, the compressor (11), and the indoor blower (13) can be controlled, and the temperature sensor (15 And a controller (21) that performs a thermo-off operation that stops the compressor (11) by comparing the indoor temperature detected by the above-mentioned first temperature with the first set temperature. The controller (21) compares the room temperature detected by the temperature sensor (15) with the second set temperature during the thermo-off operation in the cooling operation, and the room temperature is lower than the second set temperature. In this case, control for stopping the indoor blower (13) or control for reducing the rotational speed of the indoor blower (13) is executed.

  In this configuration, at the time of the thermo-off operation in the cooling operation, the indoor fan (13) is not continuously operated as in the prior art, but the indoor fan (13) is stopped or stopped when the indoor temperature is lower than the second set temperature. Since the rotation speed of the indoor blower (13) is reduced, power consumption can be reduced. In addition, when the room temperature is lower than the second set temperature, it is not necessary to further improve the cool feeling, so that the comfort can be prevented from being impaired. Therefore, according to this configuration, it is possible to achieve both reduction in power consumption and comfort.

  In a preferred configuration of the present invention, the storage unit (19) stores operating conditions of the indoor fan (13) corresponding to each set temperature, and the control unit (21) performs the thermo-off operation. At this time, control is performed to change the rotational speed of the indoor blower (13) stepwise based on the indoor temperature detected by the temperature sensor (15) and the operating conditions.

  In this configuration, in the thermo-off operation, control is executed to change the rotational speed of the indoor blower (13) stepwise based on the indoor temperature detected by the temperature sensor (15) and the operating conditions. The indoor blower (13) can be controlled more finely according to the environmental change. Thereby, reduction of power consumption and comfort can be improved more.

  In a preferred configuration of the present invention, the storage unit (19) stores timing information in which a timing for comparing the room temperature and the set temperature is preset, and the control unit (21) When the indoor blower (13) is stopped during the thermo-off operation in the cooling operation, the indoor temperature to be compared with the set temperature is detected a predetermined time before the indoor temperature is detected based on the timing information. Control for operating the blower (13) is executed.

  In this configuration, when the indoor blower (13) is stopped during the thermo-off operation, the indoor blower (13) is operated a predetermined time before the indoor temperature is detected. The detection accuracy according to (17) can be improved.

  As described above, according to the present invention, both reduction in power consumption and comfort can be achieved.

It is the schematic which shows the air conditioning system provided with the air conditioning apparatus which concerns on one Embodiment of this invention. It is a block diagram of the air conditioning apparatus. It is a flowchart which shows the control example 1 of the said air conditioning apparatus. It is a flowchart which shows the control example 2 of the said air conditioning apparatus. It is a flowchart which shows the control example 3 of the said air conditioning apparatus. It is a flowchart which shows the control example 4 of the said air conditioning apparatus. It is a flowchart which shows the reference example of control of the said air conditioning apparatus.

  Hereinafter, an air conditioner according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a schematic configuration of an air conditioning system 100 including an air conditioner 27 of the present embodiment. As shown in FIG. 1, the air conditioning system 100 includes an air conditioner 27 that mainly adjusts indoor temperature, and a humidity controller 51 that mainly adjusts indoor humidity. In the air conditioning system 100, the air whose temperature is adjusted by the air conditioner 27 and the air whose humidity is adjusted by the humidity control device 51 are supplied into the same room.

  The air conditioner 27 includes an indoor unit 23 and an outdoor unit 25. As shown in FIGS. 1 and 2, the indoor unit 23 and the outdoor unit 25 are controlled by a control unit 41. The control unit 41 may be disposed in the casing 26 of the outdoor unit 25, may be disposed in the casing 24 of the indoor unit 23, and is provided at a location different from the indoor unit 23 and the outdoor unit 25. It may be arranged. 1 illustrates the case where the control unit 41 controls one indoor unit 23 and one outdoor unit 25, the control unit 41 includes a plurality of indoor units 23 like an air conditioning system such as a building. The plurality of outdoor units 25 can also be controlled.

  The indoor unit 23 includes an indoor heat exchanger 31, an indoor blower 13, a temperature sensor 15, a humidity sensor 17 and the like in a casing 24. The outdoor unit 25 includes a compressor 11, an outdoor heat exchanger 33, an expansion valve 37, a four-way switching valve 35, and the like in a casing 26. The air conditioner 27 includes a refrigerant circuit in which the indoor heat exchanger 31, the compressor 11, the outdoor heat exchanger 33, the expansion valve 37, and the four-way switching valve 35 are connected by piping and the refrigerant circulates. The air conditioner 27 can switch between the cooling operation and the heating operation by switching the flow direction of the refrigerant by the four-way switching valve 35.

  The casing 24 of the indoor unit 23 is driven by the indoor blower 13, whereby a room air is sucked into the indoor unit 23 and a refrigerant in the indoor heat exchanger 31 in the indoor unit 23. And an air outlet (not shown) through which air exchanged with the air is blown into the room.

  The temperature sensor 15 and the humidity sensor 17 are provided in the vicinity of the air inlet of the indoor unit 23, respectively. The temperature sensor 15 can measure the temperature of air sucked into the casing 24 of the indoor unit 23 from the air suction port, that is, the indoor temperature (suction temperature). The humidity sensor 17 can measure the humidity of the air sucked into the indoor unit 23 from the air suction port, that is, the indoor humidity (suction humidity). These indoor temperature and indoor humidity are values obtained by measuring the temperature and humidity before indoor air passes through the indoor heat exchanger 31 (before heat exchange).

  The control unit 41 includes a storage unit 19, a timer 20, and an operation control unit 21. The storage unit 19 includes a memory that stores a program, a memory that temporarily stores various data and can be rewritten. The timer can measure various times (e.g., elapsed time). The operation control unit 21 includes a central processing unit (CPU) (not shown), and is based on data stored in the storage unit 19, time data measured by the timer 20, etc., the compressor 11, the indoor blower 13, and the outdoor blower. 29 and the like, and switching of the four-way switching valve 35 are controlled.

  The storage unit 19 stores a preset set temperature T1 and a set humidity H1 that serve as a reference for control of the compressor 11, the indoor blower 13, and the like. The set temperature T1 and the set humidity H1 can be set to arbitrary values by the user from the remote controller 43 or the like. The storage unit 19 can also store data such as the indoor temperature T detected by the temperature sensor 15 and the indoor humidity H detected by the humidity sensor 17.

  The remote controller 43 is attached to an appropriate position that is easy for the user to operate, such as an indoor side wall, and the user can operate, stop, change the set temperature, set humidity, and the like of the air conditioner 27.

  The humidity control device 51 includes a first adsorption heat exchanger 53, a second adsorption heat exchanger 55, and the like in a casing 52. In addition to the above, the humidity control device 51 includes an unillustrated compressor, expansion valve, four-way switching valve, and the like. The first adsorption heat exchanger 53, the second adsorption heat exchanger 55, the compressor, The expansion valve and the four-way switching valve are connected by a pipe to have a refrigerant circuit in which the refrigerant circulates. The humidity control device 51 may be configured to be controlled by the control unit 41 described above, or may be configured to be controlled by another control device.

  In the refrigerant circuit of the humidity control apparatus 51, an operation in which the high-pressure refrigerant flows through the first adsorption heat exchanger 53 and the low-pressure refrigerant flows through the second adsorption heat exchanger 55 by switching the flow direction of the refrigerant by the four-way switching valve. The operation in which the low-pressure refrigerant flows through the first adsorption heat exchanger 53 and the high-pressure refrigerant flows through the second adsorption heat exchanger 55 is alternately performed.

  In the adsorption heat exchanger (evaporator) through which the low-pressure refrigerant flows, the adsorbent (not shown) is cooled and moisture in the air is adsorbed by the adsorbent. In the adsorption heat exchanger (condenser) through which the high-pressure refrigerant flows, the adsorbent (not shown) is heated, and moisture is desorbed from the adsorbent and applied to the air. As described above, in each adsorption heat exchanger, the operation of adsorbing moisture (adsorption operation) and the operation of desorbing moisture (regeneration operation) are alternately performed with the switching of the four-way switching valve.

  The humidity control device 51 supplies one of the air in contact with the adsorbent carried on each adsorption heat exchanger into the room and discharges the other into the room. For example, in the humidity control apparatus during the humidity control operation, the air that has passed through the first and second adsorption heat exchangers that operate as an evaporator is supplied to the room and passes through the one that operates as a condenser. The air flow path in the casing is switched by the opening / closing operation of a damper (not shown) so that the air is discharged outside the room.

  Hereinafter, an example of control during the cooling operation of the air conditioner 27 will be described.

<Control example 1>
FIG. 3 is a flowchart showing a control example 1 of the air conditioner 27. In this control example 1, the set humidity (relative humidity) H1 is set to 50% as an initial set value, and the set temperature T1 is set to 25 ° C. by the user. When the indoor humidity H is lower than the set humidity H1, the set humidity H1 is a humidity at which sufficient cool feeling can be obtained without driving the indoor blower 13, in other words, the indoor blower 13 is driven to further enhance the cool feeling. The humidity is set so that there is little need for improvement. The set temperature T1 and the set humidity H1 are not limited to the above values, and can be arbitrarily set.

  Table 1 shows an example of operating conditions of the indoor blower 13. When the indoor temperature T is higher than the set temperature T1 (25 ° C.), a thermo-on operation for driving the compressor 11 is executed, and the indoor blower 13 is operated at a predetermined rotational speed (747 rpm in the example of Table 1). The On the other hand, when the room temperature T is equal to or lower than the set temperature T1 (25 ° C.), a thermo-off operation for stopping the compressor 11 is executed. During the thermo-off operation, the rotational speed of the indoor fan 13 is controlled according to the indoor humidity H. Specifically, in the present control example 1 in which the set humidity H1 is set to 50%, when the indoor humidity H is equal to or higher than the set humidity H1 (50%), the indoor blower 13 has the same rotational speed as the thermo-on operation. (747 rpm). On the other hand, when the indoor humidity H becomes lower than the set humidity H1 (50%), the operation of the indoor blower 13 is stopped.

  Hereinafter, the control flow of the control example 1 will be specifically described with reference to the flowchart of FIG. Although the flow of control of the humidity control device 51 is not shown in the flowchart of FIG. 3, the humidity control device 51 is also operated during the operation of the air conditioning device 27. Even during operation, the indoor humidity H and the indoor temperature T vary.

  As shown in FIG. 3, for example, when the user gives an instruction to start the cooling operation of the air conditioner 27 using the remote controller 43, the operation control unit 21 starts the cooling operation of the air conditioner 27.

  In step S <b> 11, the operation control unit 21 determines whether the user has issued an instruction to end the cooling operation using the remote controller 43, that is, whether an off operation has been performed. When the user performs an off operation with the remote controller 43, the operation control unit 21 ends the cooling operation of the air conditioner 27. On the other hand, if the user has not performed an off operation with the remote controller 43, the operation control unit 21 continues the cooling operation and proceeds to step S12.

  In step S12, the operation control unit 21 determines whether or not the room temperature (suction temperature) T detected by the temperature sensor 15 is higher than the set temperature T1, and when the room temperature T is higher than the set temperature T1. Advances to step S13. On the other hand, when it is determined in step S12 that the room temperature T is equal to or lower than the set temperature T1, the operation control unit 21 proceeds to step S14.

  In step S13, the operation control unit 21 performs a thermo-on operation for controlling the compressor 11 and the indoor blower 13 to drive both the compressor 11 and the indoor blower 13, and returns to step S11.

  In step S14, the operation control unit 21 performs a thermo-off operation for controlling the compressor 11 to stop the compressor 11, and proceeds to step S15. At this time, the indoor blower 13 maintains the driven state.

  In step S <b> 15, the operation control unit 21 determines whether or not the user has issued an instruction (off operation) to end the cooling operation using the remote controller 43. When the user performs an off operation with the remote controller 43, the operation control unit 21 ends the cooling operation of the air conditioner 27. On the other hand, if the user has not performed an off operation with the remote controller 43, the operation control unit 21 continues the cooling operation and proceeds to step S16.

  In step S16, the operation control unit 21 determines whether or not the indoor humidity (suction humidity) H detected by the humidity sensor 17 is lower than the set humidity H1. In step S16, if the indoor humidity H is lower than the set humidity H1, the process proceeds to step S17. On the other hand, when it is determined that the indoor humidity H is equal to or higher than the set humidity H1, the operation control unit 21 proceeds to step S18.

  In step S17, the operation control unit 21 controls the indoor blower 13 to stop the indoor blower 13 and proceeds to step S19. On the other hand, in step S18, the operation control unit 21 controls the indoor blower 13 to maintain the state where the indoor blower 13 is driven, and proceeds to step S19.

  In step S19, the operation control unit 21 determines whether or not the room temperature T at that time is higher than the set temperature T1, and if the room temperature T is higher than the set temperature T1, the operation control unit 21 returns to step S13 to The control after step S13 is repeated.

  On the other hand, when it is determined in step S19 that the room temperature T is equal to or lower than the set temperature T1, the operation control unit 21 returns to step S15 and repeats the control from step S15 described above. Therefore, when the indoor humidity H varies and the magnitude relationship with the set humidity H1 varies, the driving and stopping of the indoor blower 13 are repeated in steps S15 to S19.

  As described above, in the control example 1 of the present embodiment, when the indoor fan 13 is not continuously operated during the thermo-off operation in the cooling operation as in the conventional case, the indoor humidity H is lower than the set humidity H1. Since the indoor blower 13 is stopped, excessive operation of the indoor blower 13 can be suppressed and power consumption can be reduced. When the indoor humidity H is lower than the set humidity H1, there is little need to further improve the cool feeling, so that the comfort can be prevented from being impaired. Therefore, according to the control example 1, it is possible to achieve both reduction in power consumption and comfort.

<Control example 2>
FIG. 4 is a flowchart showing a control example 2 of the air conditioner 27. In this control example 2, when the indoor blower 13 is stopped during the thermo-off operation, the control is performed such that the indoor blower 13 is operated a predetermined time before detecting the indoor humidity H compared with the set humidity H1. Different from Example 1. Therefore, steps S21 to S24 of the control example 2 have the same control flow as that of the steps S11 to S14 of the control example 1, and thus description thereof is omitted.

  In the control example 2, the storage unit 19 stores a predetermined time t1 that defines a timing (interval) for comparing the indoor humidity H and the set humidity H1 as timing information. The storage unit 19 stores a predetermined time t2 set in advance. The predetermined time t2 defines a time (length) for operating the indoor blower 13 immediately before the indoor humidity H and the set humidity H1 are compared every predetermined time t1.

  Hereinafter, the control flow of the control example 2 will be specifically described with reference to the flowchart of FIG. As shown in FIG. 4, when it is determined in step S22 that the room temperature T is higher than the set temperature T1, the operation control unit 21 proceeds to step S24.

  In step S24, the operation control unit 21 performs a thermo-off operation for controlling the compressor 11 to stop the compressor 11, and proceeds to step S25. At this time, the indoor blower 13 maintains the driven state.

  In step S25, the operation control unit 21 starts measurement by the timer 20 and proceeds to step S26.

  In step S26, the operation control unit 21 determines whether or not the user has issued an instruction to end the cooling operation using the remote controller 43, that is, whether or not an off operation has been performed. When the user performs an off operation with the remote controller 43, the operation control unit 21 ends the cooling operation of the air conditioner 27. On the other hand, if the user has not performed an off operation with the remote controller 43, the operation control unit 21 continues the cooling operation and proceeds to step S27.

  In step S27, the operation control unit 21 determines whether or not the room temperature T detected by the temperature sensor 15 is higher than the set temperature T1, and if the room temperature T is higher than the set temperature T1, step S23 is performed. Returning to step S23, the control after step S23 is repeated. On the other hand, when it is determined in step S27 that the room temperature T is equal to or lower than the set temperature T1, the operation control unit 21 proceeds to step S28.

  In step S28, the operation control unit 21 determines whether or not the measurement value of the time by the timer 20 has reached the predetermined time t1, and if the measurement value has reached the predetermined time t1, the operation control unit 21 proceeds to step S29. If the measured value has not reached the predetermined time t1, the process returns to step S26 and the control after step S26 is repeated.

  In step S29, the operation control unit 21 determines whether or not the indoor blower 13 is being driven at that time. If the indoor blower 13 is being driven, the operation control unit 21 proceeds to step S31 and the indoor blower 13 is stopped. If so, the process proceeds to step S30.

  In step S30, the operation control unit 21 operates the indoor fan 13 for a predetermined time t2. When the indoor blower 13 is stopped in step S29, the air in the vicinity of the indoor unit 23 where the temperature sensor 15 is disposed may not flow very much. In this case, an error between the indoor temperature (suction temperature) T detected by the temperature sensor 15 and the actual indoor air temperature may increase. Therefore, the predetermined time t2 is set to such a length that the air in the vicinity of the air inlet of the indoor unit 23 in which the temperature sensor 15 is disposed can flow to some extent. Specifically, the predetermined time t2 is set to, for example, about several seconds to several tens of seconds, and more specifically, for example, about 5 to 15 seconds.

  The operation control unit 21 operates the indoor blower 13 for a predetermined time t2 in step S30, and then proceeds to step S31 to compare the indoor humidity H with the set humidity H1. That is, in step S31, the operation control unit 21 determines whether the indoor humidity H detected by the humidity sensor 17 at that time is lower than the set humidity H1. In step S31, if the indoor humidity H is lower than the set humidity H1, the process proceeds to step S32. On the other hand, if the operation control unit 21 determines that the room humidity H is equal to or higher than the set humidity H1, the operation control unit 21 proceeds to step S33.

  In step S32, the operation control unit 21 controls the indoor blower 13 to stop the indoor blower 13 and proceeds to step S34. On the other hand, in step S33, the operation control unit 21 controls the indoor blower 13 to maintain the state where the indoor blower 13 is driven, and proceeds to step S34.

  In step S34, the operation control part 21 resets the measured value of the timer 20, returns to step S25, and repeats control after step S25.

  As described above, in the control example 2, when the indoor blower 13 is stopped during the thermo-off operation, the indoor blower 13 is operated before the predetermined time t1 when the indoor humidity H is detected. It is suppressed and air can flow. Thereby, indoor air can be made more uniform and the detection accuracy by the humidity sensor 17 can be improved.

<Control example 3>
FIG. 5 is a flowchart showing a control example 3 of the air conditioner 27. In this control example 3, at the time of the thermo-off operation, the control for changing the rotational speed of the indoor blower 13 stepwise based on the indoor humidity H detected by the humidity sensor 17 and the operating condition set in advance according to the indoor humidity H. Is different from the control example 2. Therefore, steps S41 to S50 of the control example 3 have the same control flow as that of the steps S21 to S30 of the control example 2, and thus the description thereof is omitted.

  In this control example 3, a case where the set temperature T1 serving as a reference for switching between the thermo-on operation and the thermo-off operation is set to 25 ° C. will be described as an example.

  In the control example 3, the storage unit 19 stores nine preset humidity levels H1 to H9 set in advance and the operating conditions of the indoor blower 13 corresponding to each set humidity level. The set humidity H1 to H9 is set every 10 ° C. from 20 ° C. to 100 ° C. That is, the set humidity H1 is 20 ° C, the set humidity H2 is 30 ° C, the set humidity H3 is 40 ° C, the set humidity H4 is 50 ° C, the set humidity H5 is 60 ° C, the set humidity H6 is 70 ° C, and the set humidity H7 is 80 ° C. The set humidity H8 is 90 ° C. and the set humidity H9 is 100 ° C.

  Table 2 shows an outline of operating conditions of the indoor blower 13 according to the indoor temperature T and the indoor humidity H. For example, when the room temperature T is higher than the set temperature T1 (25 ° C.), that is, during the thermo-on operation, the rotation speed of the indoor blower 13 is set to a constant value (747 rpm).

  On the other hand, the rotation speed of the indoor blower 13 during the thermo-off operation is set stepwise according to the indoor humidity H and the indoor temperature T. Specifically, for example, when the indoor temperature T is 24 ° C. or higher and lower than 25 ° C., the rotational speed of the indoor blower 13 is controlled as follows. When the indoor humidity H is less than the set humidity H4, that is, when the indoor humidity H is less than 50%, the indoor blower 13 is controlled to stop (the number of rotations = 0). When the indoor humidity H is equal to or higher than the set humidity H4 and lower than the set humidity H5, that is, when the indoor humidity H is equal to or higher than 50% and lower than 60%, the rotation speed of the indoor blower 13 is controlled to 81 rpm. Similarly, when the indoor humidity H is equal to or higher than the set humidity H5 and lower than the set humidity H6, that is, when the indoor humidity H is equal to or higher than 60% and lower than 70%, the rotational speed of the indoor blower 13 is controlled to 162 rpm. Similarly, when the indoor humidity H is 70% or more, the rotation speed of the indoor blower 13 is controlled to values (243 rpm, 324 rpm, 405 rpm, 486 rpm) corresponding to the set humidity H6 to H9.

  As shown in Table 2, when the indoor temperature T is 22 ° C. or higher and lower than 24 ° C., the operation of the indoor blower 13 is stopped. In addition, although not described in Table 2, the operation of the indoor blower 13 is similarly stopped when the indoor temperature T is less than 22 ° C.

  Hereinafter, the control flow of the control example 3 will be specifically described with reference to the flowchart of FIG. As shown in FIG. 5, the operation control unit 21 operates the indoor blower 13 for a predetermined time t2 in step S50, and then proceeds to step S51.

  In step S51, the operation control unit 21 compares the indoor humidity H detected by the humidity sensor 17 at that time with the set humidity H1 to H9, and based on the indoor temperature T detected by the temperature sensor 15 at that time. Thus, it is determined whether it is necessary to change the rotational speed of the indoor blower 13. A specific example is as follows.

  For example, it is assumed that the rotation speed of the indoor blower 13 at the time of step S51 is 243 rpm. When the room temperature T detected by the temperature sensor 15 at the time of step S51 is 24.5 ° C. and the room humidity H detected by the humidity sensor 17 at that time is 65%, the operation control unit 21 It is determined that it is necessary to reduce the rotational speed of the blower 13, and the process proceeds to step S52. Then, in step S52, the operation control unit 21 controls the indoor blower 13 to lower the rotational speed of the indoor blower 13 from 243 rpm to 162 rpm as shown in Table 2, and proceeds to step S53.

  For example, when the indoor temperature T detected by the temperature sensor 15 at the time of step S51 is 24.5 ° C. and the indoor humidity H detected by the humidity sensor 17 at that time is 85%, the operation control unit 21 determines that it is necessary to increase the rotational speed of the indoor blower 13, and proceeds to step S52. In step S52, the operation control unit 21 controls the indoor blower 13 to increase the rotational speed of the indoor blower 13 from 243 rpm to 324 rpm as shown in Table 2, and proceeds to step S53.

  For example, when the indoor temperature T detected by the temperature sensor 15 at the time of step S51 is 24.5 ° C. and the indoor humidity H detected by the humidity sensor 17 at that time is 75%, the operation control unit 21 determines that it is not necessary to change the rotational speed of the indoor blower 13, and proceeds to step S53.

  Further, for example, when the room temperature T detected by the temperature sensor 15 at the time of step S51 is 23 ° C., the operation control unit 21 does not depend on the value of the room humidity H detected by the humidity sensor 17 at that time. As shown in Table 2, it is determined that the operation of the indoor blower 13 needs to be stopped, and the process proceeds to step S52. In step S52, the operation control unit 21 controls the indoor blower 13 to stop the operation of the indoor blower 13, and then proceeds to step S53.

  In step S53, the operation control part 21 resets the measured value of the timer 20, returns to step S45, and repeats control after step S45.

  As described above, in the control example 3, in the thermo-off operation, the rotational speed of the indoor blower 13 is changed stepwise based on the indoor humidity H detected by the humidity sensor 17 and the operating conditions as shown in Table 2. Therefore, the indoor blower 13 can be controlled more finely according to the indoor environment change. Thereby, reduction of power consumption and comfort can be improved more.

<Control example 4>
FIG. 6 is a flowchart showing a control example 4 of the air conditioner 27. This control example 4 is different from the control example 2 in that when the indoor blower 13 is stopped during the thermo-off operation, the operation and stop of the indoor blower 13 are determined based on the indoor temperature instead of the indoor humidity. Yes. Therefore, steps S61 to S74 of the control example 4 are substantially the same as the control flow of steps S21 to S34 of the control example 2, and therefore only the differences will be described below.

  In this control example 4, in step S62, whether to perform the thermo-on operation or the thermo-off operation is determined based on the first set temperature T1. The first set temperature T1 corresponds to the set temperature T1 of the control example 2. In this control example 4, the case where the first set temperature T1 is set to, for example, 25 ° C. will be described as an example.

  Further, in this control example 4, in step S71, the determination of the operation and stop of the indoor blower 13 during the thermo-off operation is performed based on the second set temperature T2. The second set temperature T2 is set to a value (for example, 23 ° C.) smaller than the first set temperature T1, and is stored in the storage unit 20.

  Hereinafter, the control flow of the control example 4 will be specifically described with reference to the flowchart of FIG. As shown in FIG. 6, the operation control unit 21 operates the indoor blower 13 for a predetermined time t2 in step S70, and then proceeds to step S71.

  In step 71, the operation control unit 21 determines whether or not the room temperature T detected by the temperature sensor 15 at that time is lower than the second set temperature T2. If the room temperature T is lower than the second set temperature T2 in step S71, the process proceeds to step S72. On the other hand, if it is determined that the room temperature T is equal to or higher than the second set temperature T2, the operation control unit 21 proceeds to step S73.

  In step S72, the operation control unit 21 controls the indoor blower 13 to stop the indoor blower 13 and proceeds to step S74. On the other hand, in step S73, the operation control unit 21 controls the indoor blower 13 to maintain the state where the indoor blower 13 is driven, and proceeds to step S74.

  In step S74, the operation control part 21 resets the measured value of the timer 20, returns to step S65, and repeats the control after step S65.

  In the control example 4, the case where the control of either operating or stopping the indoor blower 13 is executed in steps S71 to S73 has been described as an example. However, in the control example 4, for example, as in the control example 3 Alternatively, control may be performed to change the rotational speed of the indoor blower 13 in stages.

  As described above, in the control example 4, during the thermo-off operation in the cooling operation, the indoor blower 13 is not continuously operated as in the prior art, but when the indoor temperature T is lower than the second set temperature T2. 13 is stopped or the rotational speed of the indoor blower 13 is reduced, so that power consumption can be reduced. In addition, when the room temperature T is lower than the second set temperature T2, it is not necessary to further improve the cool feeling, so that the comfort can be prevented from being impaired. Therefore, according to the control example 4, it is possible to achieve both reduction in power consumption and comfort.

  The embodiment and the control example of the present invention have been described above, but the present invention is not limited to the embodiment and the control example, and various modifications and improvements can be made without departing from the scope of the present invention.

  For example, in the said embodiment, when controlling the indoor fan at the time of thermo-off operation based on humidity (comparing indoor humidity and setting humidity) (control examples 1-3), and controlling the indoor fan at the time of thermo-off operation Although the case (control example 4) performed based on temperature (comparing room temperature and 2nd preset temperature) was illustrated, it is not limited to these. For example, the indoor blower may be controlled based on both humidity and temperature during the thermo-off operation. In this case, at the time of the thermo-off operation, for example, when one of the room humidity and the room temperature becomes lower than the set humidity or the second set temperature, the control is performed to stop the indoor blower or reduce the rotation speed of the indoor blower. That's fine.

  Moreover, in the said embodiment, although the case where the air conditioning system was provided with the air conditioning apparatus and the humidity control apparatus was mentioned as an example, the humidity control apparatus is not essential and can also be abbreviate | omitted.

<Reference example>
FIG. 7 is a flowchart illustrating a reference example of control in the heating operation of the air conditioner 27. This reference example is substantially the same as the control flow of the control example 3 except that the control is for heating operation. That is, in this reference example, during the thermo-off operation of the heating operation, the rotational speed of the indoor blower 13 is stepped based on the indoor humidity H detected by the humidity sensor 17 and the operating condition set in advance according to the indoor humidity H. Control to change automatically. Therefore, steps S81 to S93 of this reference example have the same control flow as S41 to S53 of control example 3, and only the differences will be described below.

  In this reference example, a case where the set temperature T1 serving as a reference for switching between the thermo-on operation and the thermo-off operation is set to 25 ° C. will be described as an example.

  In the reference example, the storage unit 19 stores nine preset humidity levels H1 to H9 set in advance and the operating conditions of the indoor blower 13 corresponding to each set humidity level. Each set humidity H1 to H9 is the same as that in the control example 3.

  Table 3 shows an outline of operating conditions of the indoor blower 13 according to the indoor temperature T and the indoor humidity H. For example, when the room temperature T is lower than the set temperature T1 (25 ° C.), that is, the rotation speed of the indoor blower 13 during the thermo-on operation is set to a constant value (747 rpm). On the other hand, the rotation speed of the indoor blower 13 during the thermo-off operation is set stepwise according to the indoor humidity H and the indoor temperature T.

  Specifically, for example, when the indoor temperature T is 25 ° C. or higher and lower than 26 ° C., the rotational speed of the indoor blower 13 is controlled as follows. When the indoor humidity H is less than the set humidity H5, that is, when the indoor humidity H is less than 60%, the indoor blower 13 is controlled to stop (rotation speed = 0). Further, when the indoor humidity H is equal to or higher than the set humidity H5 and lower than the set humidity H6, that is, when the indoor humidity H is equal to or higher than 60% and lower than 70%, the rotation speed of the indoor blower 13 is controlled to 81 rpm. Similarly, when the indoor humidity H is equal to or higher than the set humidity H6 and lower than the set humidity H7, that is, when the indoor humidity H is equal to or higher than 70% and lower than 80%, the rotational speed of the indoor blower 13 is controlled to 162 rpm. Similarly, when the indoor humidity H is 80% or more, the rotation speed of the indoor blower 13 is controlled to values (243 rpm, 324 rpm, and 405 rpm) corresponding to the set humidity H7 to H9, respectively.

  As shown in Table 3, when the indoor temperature T is 26 ° C. or higher and lower than 28 ° C., the operation of the indoor blower 13 is stopped. Although not shown in Table 3, the operation of the indoor blower 13 is similarly stopped when the indoor temperature T is 28 ° C. or higher.

  Hereinafter, the control flow of the reference example will be specifically described with reference to the flowchart of FIG. As shown in FIG. 7, in step S82, the operation control unit 21 determines whether or not the room temperature T detected by the temperature sensor 15 is lower than the set temperature T1, and the room temperature T is lower than the set temperature T1. If so, the process proceeds to step S83. On the other hand, when it is determined in step S82 that the room temperature T is equal to or higher than the set temperature T1, the operation control unit 21 proceeds to step S84.

  In step S83, the operation control unit 21 performs a thermo-on operation for controlling the compressor 11 and the indoor blower 13 to drive both the compressor 11 and the indoor blower 13, and returns to step S81.

  In step S84, the operation control unit 21 performs a thermo-off operation for controlling the compressor 11 to stop the compressor 11, and proceeds to step S85. At this time, the indoor blower 13 maintains the driven state.

  When the room temperature T is lower than the set temperature T1 in step S87, the process returns to step S83, and when the room temperature T is equal to or higher than the set temperature T1, the process of steps S85 to S90 is controlled. Since this is the same as steps S45 to S50 in Example 3, the description thereof is omitted.

  The operation control unit 21 operates the indoor blower 13 for a predetermined time t2 in step S90, and then proceeds to step S91.

  In step S91, the operation control unit 21 compares the indoor humidity H detected by the humidity sensor 17 at that time with the set humidity H1 to H9, and based on the indoor temperature T detected by the temperature sensor 15 at that time. Thus, it is determined whether it is necessary to change the rotational speed of the indoor blower 13. A specific example is as follows.

  For example, it is assumed that the rotation speed of the indoor blower 13 at the time of step S91 is 162 rpm. When the indoor temperature T detected by the temperature sensor 15 at the time of step S91 is 25.5 ° C. and the indoor humidity H detected by the humidity sensor 17 at that time is 65%, the operation control unit 21 It is determined that the rotational speed of the blower 13 needs to be reduced, and the process proceeds to step S92. In step S92, the operation control unit 21 controls the indoor blower 13 to lower the rotational speed of the indoor blower 13 from 162 rpm to 81 rpm as shown in Table 3, and proceeds to step S93.

  When the indoor temperature T detected by the temperature sensor 15 at the time of step S91 is 25.5 ° C. and the indoor humidity H detected by the humidity sensor 17 at that time is 85%, the operation control unit 21 Then, it is determined that the rotational speed of the indoor blower 13 needs to be increased, and the process proceeds to step S92. Then, in step S92, the operation control unit 21 controls the indoor blower 13 to increase the rotational speed of the indoor blower 13 from 162 rpm to 243 rpm as shown in Table 3, and proceeds to step S93.

  When the indoor temperature T detected by the temperature sensor 15 at the time of step S91 is 25.5 ° C. and the indoor humidity H detected by the humidity sensor 17 at that time is 75%, the operation control unit 21 Then, it is determined that it is not necessary to change the rotational speed of the indoor blower 13, and the process proceeds to step S93.

  Further, when the room temperature T detected by the temperature sensor 15 at the time of step S91 is 27 ° C., the operation control unit 21 sets the room temperature regardless of the value of the room humidity H detected by the humidity sensor 17 at that time. It is determined that the operation of the blower 13 needs to be stopped, and the process proceeds to step S92. In step S92, the operation control unit 21 controls the indoor blower 13 to stop the operation of the indoor blower 13, and proceeds to step S93.

  In step S93, the operation control part 21 resets the measured value of the timer 20, returns to step S85, and repeats control after step S85.

DESCRIPTION OF SYMBOLS 11 Compressor 13 Blower of indoor unit 15 Temperature sensor 17 Humidity sensor 19 Memory | storage part 21 Control part 23 Indoor unit 25 Outdoor unit 27 Air conditioning apparatus 29 Blower of outdoor unit 31 Heat exchanger of indoor unit 33 Heat exchanger of outdoor unit 35 Four-way switching valve 37 Expansion valve 41 Control unit

Claims (6)

  1. An air conditioner,
    Compressor (11), indoor fan (13), temperature sensor (15) for detecting room temperature, humidity sensor (17) for detecting room humidity, at least one preset temperature and at least one It is possible to control the storage unit (19) storing one set humidity, the compressor (11) and the indoor blower (13), and the indoor temperature detected by the temperature sensor (15) and the set temperature, A controller (21) that performs a thermo-off operation for stopping the compressor (11) by comparing
    The controller (21) compares the indoor humidity detected by the humidity sensor (17) with the set humidity during the thermo-off operation in the cooling operation, and the indoor humidity is lower than the set humidity. The air conditioner which performs control which stops an indoor air blower (13), or control which makes the rotation speed of the said indoor air blower (13) small.
  2. The storage unit (19) stores a plurality of the set humidity, and stores operating conditions of the indoor blower (13) corresponding to each set humidity,
    The control unit (21) performs control to change the rotational speed of the indoor blower (13) stepwise based on the indoor humidity detected by the humidity sensor (17) and the operating conditions during the thermo-off operation. The air conditioning apparatus according to claim 1, which is executed.
  3. The storage unit (19) stores timing information in which timing for comparing the indoor humidity and the set humidity is set in advance.
    When the indoor blower (13) is stopped during the thermo-off operation in the cooling operation, the control unit (21) detects the indoor humidity to be compared with the set humidity based on the timing information. The air conditioner according to claim 1 or 2, wherein control for operating the indoor blower (13) is executed before a predetermined time.
  4. An air conditioner,
    A compressor (11), an indoor fan (13), a temperature sensor (15) for detecting the room temperature, a preset first set temperature, and a second set temperature that is smaller than the first set temperature. A storage unit (19) in which a plurality of set temperatures are stored, the compressor (11), and the indoor blower (13) can be controlled, and the indoor temperature detected by the temperature sensor (15) and the first A controller (21) that performs a thermo-off operation for comparing the set temperature with the compressor (11) and stopping the compressor (11),
    The controller (21) compares the room temperature detected by the temperature sensor (15) with the second set temperature during the thermo-off operation in the cooling operation, and the room temperature is lower than the second set temperature. In this case, the air conditioner executes control for stopping the indoor blower (13) or control for reducing the rotational speed of the indoor blower (13).
  5. The storage unit (19) stores operating conditions of the indoor fan (13) corresponding to each set temperature,
    The control unit (21) performs control to change the rotational speed of the indoor blower (13) stepwise based on the indoor temperature detected by the temperature sensor (15) and the operating condition during the thermo-off operation. The air conditioning apparatus according to claim 4, wherein the air conditioning apparatus is executed.
  6. The storage unit (19) stores timing information in which timing for comparing the room temperature and the set temperature is set in advance,
    The controller (21) detects the room temperature to be compared with the set temperature based on the timing information when the indoor blower (13) is stopped during the thermo-off operation in the cooling operation. The air conditioner according to claim 4 or 5, wherein control for operating the indoor blower (13) is executed before a predetermined time.
JP2010142499A 2010-06-23 2010-06-23 Air conditioner Pending JP2012007779A (en)

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Cited By (12)

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JP2013217531A (en) * 2012-04-05 2013-10-24 Daikin Industries Ltd Air conditioner
JP2013224663A (en) * 2012-04-19 2013-10-31 Dyson Technology Ltd Fan assembly
EP2690371A1 (en) * 2012-07-24 2014-01-29 Mitsubishi Electric Corporation Air-conditioning apparatus
JP2014112004A (en) * 2012-12-05 2014-06-19 Hitachi Appliances Inc Air conditioner
JP2015099012A (en) * 2015-03-03 2015-05-28 日立アプライアンス株式会社 Air conditioner
JP2015135236A (en) * 2015-04-30 2015-07-27 ダイキン工業株式会社 air conditioner
WO2015151294A1 (en) * 2014-04-04 2015-10-08 三菱電機株式会社 Air conditioner
JP2015232439A (en) * 2015-09-07 2015-12-24 日立アプライアンス株式会社 Air conditioning system and air conditioner
US9599368B2 (en) 2009-03-04 2017-03-21 Dyson Technology Limited Nozzle for bladeless fan assembly with heater
CN106885339A (en) * 2017-03-07 2017-06-23 青岛海尔空调器有限总公司 Method for controlling air conditioner
US10145583B2 (en) 2012-04-04 2018-12-04 Dyson Technology Limited Heating apparatus
US10344773B2 (en) 2010-08-06 2019-07-09 Dyson Technology Limited Fan assembly

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9599368B2 (en) 2009-03-04 2017-03-21 Dyson Technology Limited Nozzle for bladeless fan assembly with heater
US10344773B2 (en) 2010-08-06 2019-07-09 Dyson Technology Limited Fan assembly
US10145583B2 (en) 2012-04-04 2018-12-04 Dyson Technology Limited Heating apparatus
JP2013217531A (en) * 2012-04-05 2013-10-24 Daikin Industries Ltd Air conditioner
US9822778B2 (en) 2012-04-19 2017-11-21 Dyson Technology Limited Fan assembly
JP2013224663A (en) * 2012-04-19 2013-10-31 Dyson Technology Ltd Fan assembly
AU2013203021B2 (en) * 2012-07-24 2015-01-22 Mitsubishi Electric Corporation Air-conditioning apparatus
US9200832B2 (en) 2012-07-24 2015-12-01 Mitsubishi Electric Corporation Air-conditioning apparatus
EP2690371A1 (en) * 2012-07-24 2014-01-29 Mitsubishi Electric Corporation Air-conditioning apparatus
CN103574853A (en) * 2012-07-24 2014-02-12 三菱电机株式会社 Air-conditioning apparatus
JP2014112004A (en) * 2012-12-05 2014-06-19 Hitachi Appliances Inc Air conditioner
WO2015151294A1 (en) * 2014-04-04 2015-10-08 三菱電機株式会社 Air conditioner
JP2015099012A (en) * 2015-03-03 2015-05-28 日立アプライアンス株式会社 Air conditioner
JP2015135236A (en) * 2015-04-30 2015-07-27 ダイキン工業株式会社 air conditioner
JP2015232439A (en) * 2015-09-07 2015-12-24 日立アプライアンス株式会社 Air conditioning system and air conditioner
CN106885339A (en) * 2017-03-07 2017-06-23 青岛海尔空调器有限总公司 Method for controlling air conditioner

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