CN117739412A - Air conditioner, control method for air conditioner, program, and computer-readable storage medium - Google Patents
Air conditioner, control method for air conditioner, program, and computer-readable storage medium Download PDFInfo
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- CN117739412A CN117739412A CN202311234848.6A CN202311234848A CN117739412A CN 117739412 A CN117739412 A CN 117739412A CN 202311234848 A CN202311234848 A CN 202311234848A CN 117739412 A CN117739412 A CN 117739412A
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- air conditioner
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- temperature
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- 238000000034 method Methods 0.000 title claims description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 105
- 239000002250 absorbent Substances 0.000 claims description 64
- 230000002745 absorbent Effects 0.000 claims description 64
- 239000003507 refrigerant Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 21
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000011358 absorbing material Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 description 33
- 230000007423 decrease Effects 0.000 description 16
- 238000004378 air conditioning Methods 0.000 description 12
- 238000001179 sorption measurement Methods 0.000 description 11
- 238000001035 drying Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 230000001172 regenerating effect Effects 0.000 description 5
- 206010016807 Fluid retention Diseases 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000007791 dehumidification Methods 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Central Air Conditioning (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Humidification (AREA)
Abstract
The air conditioner includes a humidifying unit for humidifying a room, and a control unit for controlling the humidifying unit, wherein the control unit acquires an indoor absolute humidity of the room when the humidifying unit performs a heating operation, calculates a target absolute humidity at the set temperature based on the set temperature and the set relative humidity of the room, and performs the humidifying operation when the indoor absolute humidity is determined to be smaller than the target absolute humidity.
Description
Technical Field
The present disclosure relates to an air conditioner, a control method of the air conditioner, a program, and a computer-readable storage medium.
Background
For example, patent document 1 discloses an air conditioner capable of adjusting humidity of indoor air by supplying humidified air to an indoor side by a humidifying unit attached to an outdoor unit. In this air conditioner, moisture contained in an air stream generated by the moisture absorption fan is absorbed by the moisture absorption material of the rotor. The rotor is rotationally driven by the motor, and the adsorbed moisture is released at the heating position of the heater, thereby imparting moisture to the air flow generated by the humidifying fan.
Prior art literature
Patent literature
Patent document 1: japanese patent No. 5170181 specification
Disclosure of Invention
However, in the air conditioner, there is room for improvement in that the humidification operation is efficiently performed during the heating operation.
Accordingly, an object of the present disclosure is to provide an air conditioner capable of efficiently performing a humidification operation at the time of a heating operation, a control method of the air conditioner, a program, and a computer-readable storage medium.
In order to solve the above-described problems, according to one aspect of the present disclosure, there is provided an air conditioner including:
a humidifying unit that humidifies the room; and
a control unit for controlling the humidifying unit,
the control unit, when the humidifying operation is performed during the heating operation,
acquiring the indoor absolute humidity in the room,
calculating a target absolute humidity at a set temperature based on the set temperature and the set relative humidity in the room,
and performing the humidification operation when it is determined that the indoor absolute humidity is smaller than the target absolute humidity.
According to one aspect of the present disclosure, there is provided an air conditioner including:
a humidifying unit that humidifies the room; and
A control unit for controlling the humidifying unit,
the control unit, when the humidifying operation is performed during the heating operation,
acquiring the indoor absolute humidity in the room,
calculating a predicted relative humidity when the indoor temperature reaches the set temperature based on the set temperature in the room and the indoor absolute humidity,
and performing the humidification operation when it is determined that the indoor relative humidity is less than the predicted relative humidity.
According to one aspect of the present disclosure, there is provided a control method of an air conditioner for performing a humidification operation during a heating operation, the method including:
acquiring indoor absolute humidity;
calculating a target absolute humidity at a set temperature based on the set temperature and the set relative humidity in the room; and
and a step of executing the humidification operation when it is determined that the indoor absolute humidity is smaller than the target absolute humidity.
According to one aspect of the present disclosure, there is provided a control method of an air conditioner for performing a humidification operation during a heating operation, the method including:
acquiring indoor absolute humidity;
calculating a predicted relative humidity when the indoor temperature reaches the set temperature based on the indoor set temperature and the indoor absolute humidity; and
And a step of executing the humidification operation when it is determined that the indoor relative humidity is smaller than the predicted relative humidity.
In accordance with one aspect of the present disclosure,
there is provided a program for causing an air conditioner to execute the above-described control method.
In accordance with one aspect of the present disclosure,
there is provided a computer-readable storage medium in which a program for causing an air conditioner to execute the above-described control method is stored.
According to the present disclosure, an air conditioner, a control method of the air conditioner, a program, and a computer-readable storage medium capable of efficiently performing a humidification operation at the time of a heating operation can be provided.
Drawings
Fig. 1 is a schematic view of an air conditioner according to embodiment 1 of the present disclosure.
Fig. 2 is a schematic view of the ventilator.
Fig. 3 is a schematic view of the ventilator in the air supply ventilation operation.
Fig. 4 is a schematic view of the ventilator in the exhaust ventilation operation.
Fig. 5 is a schematic view of the ventilator during the humidification operation.
Fig. 6 is a schematic view of the ventilator during the dehumidifying operation.
Fig. 7 is a block diagram showing a configuration of an air conditioner according to embodiment 1 of the present disclosure.
Fig. 8 is a flowchart of control of the air conditioner according to embodiment 1 of the present disclosure.
Fig. 9 is a timing chart of control of the air conditioner of embodiment 1 of the present disclosure.
Fig. 10 is a flowchart of control of the air conditioner according to embodiment 2 of the present disclosure.
Fig. 11 is a timing chart of control of the air conditioner of embodiment 2 of the present disclosure.
Fig. 12 is a flowchart of control of the air conditioner according to embodiment 3 of the present disclosure.
Fig. 13 is a timing chart of control of the air conditioner of embodiment 3 of the present disclosure.
Fig. 14 is a flowchart of control of the air conditioner according to embodiment 4 of the present disclosure.
Fig. 15 is a timing chart of control of the air conditioner according to embodiment 4 of the present disclosure.
Description of the reference numerals
10. Air conditioner
20. Indoor machine
22. Indoor heat exchanger
24. Fan with fan body
26. Temperature and humidity sensor
30. Outdoor unit
32. Outdoor heat exchanger
34. Fan with fan body
36. Compressor with a compressor body having a rotor with a rotor shaft
38. Expansion valve
40. Four-way valve
42. Refrigerant piping
50. Ventilation device
52. Absorbent material
54. Motor with a motor housing having a motor housing with a motor housing
56. Ventilation catheter
58. 1 st heater
60. 2 nd heater
62. Fan (1 st fan)
64. No. 1 air door device
66. No. 2 air door device
68. 3 rd air door device
70. Fan (No. 2 fan)
72. Remote controller
80. Control unit
P1 flow path (1 st flow path)
P2 flow path (the 2 nd flow path)
Detailed Description
An embodiment of the present invention will be described below with reference to the drawings.
(embodiment 1)
Fig. 1 is a schematic view of an air conditioner according to embodiment 1 of the present invention.
As shown in fig. 1, the air conditioner 10 of the present embodiment includes an indoor unit 20 disposed in an indoor Rin of an air-conditioning target and an outdoor unit 30 disposed in an outdoor Rout.
The indoor unit 20 is provided with: an indoor heat exchanger 22 that exchanges heat with indoor air A1; and a fan 24 that sucks the indoor air A1 into the indoor unit 20 and blows out the indoor air A1 subjected to heat exchange with the indoor heat exchanger 22 to the indoor Rin.
The outdoor unit 30 is provided with: an outdoor heat exchanger 32 that exchanges heat with the outdoor air A2; and a fan 34 that sucks the outdoor air A2 into the outdoor unit 30 and blows out the outdoor air A2 subjected to heat exchange with the outdoor heat exchanger 32 to the outside Rout. The outdoor unit 30 is provided with a compressor 36, an expansion valve 38, and a four-way valve 40 that perform a refrigeration cycle with the indoor heat exchanger 22 and the outdoor heat exchanger 32.
The indoor heat exchanger 22, the outdoor heat exchanger 32, the compressor 36, the expansion valve 38, and the four-way valve 40 are connected by refrigerant pipes through which the refrigerant flows. In the case of the cooling operation and the dehumidifying operation (weak cooling operation), the air conditioner 10 performs a refrigeration cycle in which the refrigerant flows from the compressor 36 through the four-way valve 40, the outdoor heat exchanger 32, the expansion valve 38, the indoor heat exchanger 22 in this order, and returns to the compressor 36. In the heating operation, the air conditioner 10 executes a refrigeration cycle in which the refrigerant flows from the compressor 36 through the four-way valve 40, the indoor heat exchanger 22, the expansion valve 38, and the outdoor heat exchanger 32 in this order, and returns to the compressor 36.
The air conditioner 10 performs an air conditioning operation of supplying the outdoor air A3 to the indoor Rin and an air conditioning operation of discharging the indoor air A1 to the outdoor Rout, in addition to an air conditioning operation based on a refrigeration cycle. Accordingly, the air conditioner 10 has the ventilation device 50. The ventilator 50 is provided in the outdoor unit 30.
Fig. 2 is a schematic view of the ventilator.
As shown in fig. 2, the ventilation device 50 includes an absorbent material 52 inside which outdoor air A3, A4 passes.
The absorbent material 52 is a member through which air can pass, and is a member that captures moisture from or provides moisture to the passing air. In the present embodiment, the absorbent material 52 has a disk shape and can be rotated about the rotation center line C1 of the center thereof. The absorbent material 52 is rotationally driven by a motor 54.
The absorbent 52 is preferably a polymeric absorbent that absorbs moisture from the air. The polymer adsorbent is composed of, for example, crosslinked sodium polyacrylate. The polymer adsorbent absorbs a larger amount of moisture per the same volume than the adsorbent such as silica gel or zeolite, and can release the retained moisture at a low heating temperature and retain the moisture for a long period of time.
Inside the ventilator 50, a 1 st flow path P1 and a 2 nd flow path P2 are provided through which the outdoor air A3 and A4 respectively pass through the absorbent 52. The 1 st flow path P1 and the 2 nd flow path P2 pass through the absorbent material 52 at different positions. A3 rd flow path P3, which is connected to different portions of the 1 st flow path P1 at both ends, is also provided in the ventilation device 50.
The 1 st flow path P1 is a flow path through which the outdoor air A3 flowing into the indoor unit 20 flows. The outdoor air A3 flowing through the 1 st flow path P1 is supplied into the indoor unit 20 through the ventilation duct 56.
In the present embodiment, the 1 st flow path P1 includes a plurality of branch flow paths P1a, P1b located on the upstream side of the absorbent 52. In this specification, "upstream" and "downstream" are used for the air flow.
The plurality of branch channels P1a and P2a are joined upstream of the absorbent 52. The 1 st and 2 nd heaters 58 and 60 for heating the outdoor air A3 are provided in the plurality of branch passages P1a and P1b, respectively.
The 1 st and 2 nd heaters 58, 60 may be heaters having the same heating capacity or heaters having different heating capacities. The 1 st and 2 nd heaters 58 and 60 are preferably PTC (Positive Temperature Coefficient ) heaters in which the resistance increases when a current flows and the temperature increases, that is, excessive increase in the heating temperature is suppressed. In the case of the PTC heater, the heater itself adjusts the heating temperature within a certain temperature range, and thus the heating temperature may not be monitored. Alternatively, the 1 st and 2 nd heaters 58 and 60 may be heaters using nichrome wire, carbon fiber, or the like.
The 1 st flow path P1 is provided with a 1 st fan 62 that generates an airflow to the outdoor air A3 in the indoor unit 20. In the present embodiment, the 1 st fan 62 is disposed downstream of the absorbent 52. By the operation of the 1 st fan 62, the outdoor air A3 flows from the outdoor Rout into the 1 st flow path P1, and passes through the absorbent 52.
The 1 st flow path P1 is provided with a 1 st damper device 64 for distributing the outdoor air A3 flowing through the 1 st flow path P1 to the indoor Rin (i.e., the indoor unit 20) or the outdoor Rout. In the present embodiment, the 1 st damper device 64 is disposed downstream of the 1 st fan 62. Outdoor air A3 distributed to the indoor unit 20 by the 1 st damper device 64 enters the indoor unit 20 through the ventilation duct 56, and is blown out to the indoor Rin by the fan 24.
The 1 st flow path P1 is provided with a 2 nd damper device 66. In the case of the present embodiment, the 2 nd damper device 66 is disposed between the absorbent 52 and the 1 st fan 62. The 2 nd damper device 66 selectively closes the 1 st flow path P1, as will be described in detail later.
The 1 st flow path P1 is also connected to the 3 rd flow path P3. The 3 rd flow path P3 connects the 1 st flow path P1 between the 1 st fan 62 and the 2 nd damper device 66 and the downstream side portion with respect to the 1 st damper device 64. The 3 rd flow path P3 is provided with a3 rd damper device 68. The 3 rd damper device 68 selectively closes the 3 rd flow path P3, as will be described in detail later.
The 2 nd flow path P2 is a flow path through which the outdoor air A4 flows. Unlike the outdoor air A3 flowing through the 1 st flow path P1, the outdoor air A4 flowing through the 2 nd flow path P2 is not directed to the indoor unit 20. The outdoor air A4 flowing through the 2 nd flow path P2 passes through the absorbent 52 and then flows to the outdoor Rout.
A 2 nd fan 70 for generating an airflow of the outdoor air A4 is provided in the 2 nd flow path P2. In the present embodiment, the 2 nd fan 70 is disposed on the downstream side of the absorbent 52. By the operation of the 2 nd fan 70, the outdoor air A4 flows from the outdoor Rout into the 2 nd flow path P2, passes through the absorbent 52, and then flows out to the outdoor Rout.
The ventilation device 50 selectively performs ventilation operation, humidification operation, and dehumidification operation using the absorbent material 52 (the motor 54), the 1 st heater 58, the 2 nd heater 60, the 1 st fan 62, the 1 st damper device 64, the 2 nd damper device 66, the 3 rd damper device 68, and the 2 nd fan 70. The ventilation operation includes an air supply ventilation operation and an air discharge ventilation operation.
Fig. 3 is a schematic view of the ventilator in the air supply ventilation operation.
The supply air ventilation operation is an air conditioning operation in which the outdoor air A3 is supplied to the indoor Rin (i.e., the indoor unit 20). As shown in fig. 3, during the ventilation operation, the motor 54 continues to rotate the absorbent material 52. The 1 st heater 58 and the 2 nd heater 60 are in an OFF state, and do not heat the outdoor air A3. The 1 st fan 62 is turned ON, and thereby the outdoor air A3 flows in the 1 st flow path P1. The 1 st damper device 64 distributes the outdoor air A3 in the 1 st flow path P1 to the indoor unit 20. The 2 nd damper device 66 is in an open state, whereby the outdoor air A3 flows from the absorbent 52 to the 1 st fan 62. The 3 rd damper device 68 is in a closed state, and thus, the outdoor air A3 does not flow through the 3 rd flow path P3. The 2 nd fan 70 is in an OFF state, and thus, the flow of the outdoor air A4 is not generated in the 2 nd flow path P2.
According to such an air supply and ventilation operation, the outdoor air A3 flows into the 1 st flow path P1, and passes through the absorbent 52 without being heated by the 1 st and 2 nd heaters 58 and 60. The outdoor air A3 having passed through the absorbent 52 is distributed to the indoor unit 20 by the 1 st damper device 64. Outdoor air A3 passing through the 1 st damper device 64 and reaching the indoor unit 20 via the ventilation duct 56 is blown out to the indoor Rin by the fan 24. By such an air supply and ventilation operation, the outdoor air A3 is directly supplied to the indoor Rin, and the indoor Rin is ventilated.
Fig. 4 is a schematic view of the ventilator in the exhaust ventilation operation.
The exhaust ventilation operation is an air conditioning operation for discharging the indoor air A1 to the outside Rout. As shown in fig. 4, in the exhaust ventilation operation, the motor 54 is in an OFF state, and the absorbent 52 does not rotate. The 1 st heater 58 and the 2 nd heater 60 are in an OFF state. The 1 st fan 62 is turned ON, and thus, the indoor air A1 flows to the 1 st fan 62 through the ventilation duct 56 and the 3 rd flow path P3. The 1 st damper device 64 distributes the indoor air A1 in the 1 st flow path P1 to the outdoor Rout. The 2 nd damper device 66 is in a closed state, and thus, the indoor air A1 does not flow to the absorbent 52. The 3 rd damper device 68 is opened, and thus, the indoor air A1 flows to the 1 st fan 62 via the 3 rd flow path P3. The 2 nd fan 70 is in an OFF state, and thus, the flow of the outdoor air A4 is not generated in the 2 nd flow path P2.
With such an exhaust ventilation operation, when the 1 st fan 62 is in the ON state, the indoor air A1 flows into the portion of the 1 st flow path P1 between the absorbent 52 and the 1 st fan 62 through the ventilation duct 56 and the 3 rd flow path P3. At this time, since the 2 nd damper device 66 is in a closed state, the indoor air A1 does not flow to the absorbent 52. The indoor air A1 after passing through the 1 st fan 62 is distributed to the outdoor Rout by the 1 st damper device 64 and is discharged to the outdoor Rout. As a result, the room Rin is ventilated.
In addition, by using the 3 rd flow path P3, the 1 st fan 62 can be rotated in the same rotation direction as in the air supply ventilation operation in the air discharge ventilation operation. As a result, a sirocco fan can be used as the 1 st fan 62.
Fig. 5 is a schematic view of the ventilator during the humidification operation.
The humidification operation is an air conditioning operation in which the outdoor air A3 is humidified and the humidified outdoor air A3 is supplied to the indoor Rin (i.e., the indoor unit 20). As shown in fig. 5, during the humidification operation, the motor 54 continuously rotates the absorbent material 52. The 1 st heater 58 and the 2 nd heater 60 are in an ON state, and heat the outdoor air A3. The 1 st fan 62 is turned ON, and thereby the outdoor air A3 flows in the 1 st flow path P1. The 1 st damper device 64 distributes the outdoor air A3 in the 1 st flow path P1 to the indoor unit 20. The 2 nd damper device 66 is in an open state, whereby the outdoor air A3 flows from the absorbent 52 to the 1 st fan 62. The 2 nd damper device 66 is in a closed state, and thus, the outdoor air A3 does not flow through the 3 rd flow path P3. The 2 nd fan 70 is turned ON, and thus, the outdoor air A4 flows through the 2 nd flow path P2.
In this humidification operation, the outdoor air A3 flows into the 1 st flow path P1, is heated by the 1 st and 2 nd heaters 58 and 60, and passes through the absorbent 52. At this time, the heated outdoor air A3 can acquire a larger amount of moisture from the absorbent 52 than a case where it is not heated. Thereby, the outdoor air A3 retains a large amount of moisture. The outdoor air A3, which retains a large amount of moisture by the absorbent 52, is distributed to the indoor unit 20 by the 1 st damper device 64. Outdoor air A3 passing through the 1 st damper device 64 and reaching the indoor unit 20 via the ventilation duct 56 is blown out to the indoor Rin by the fan 24. By such a humidification operation, the outdoor air A3 having a large amount of moisture is supplied to the indoor Rin, and the indoor Rin is humidified.
Further, by turning OFF either the 1 st heater 58 or the 2 nd heater 60, the amount of moisture that the outdoor air A3 acquires from the absorbent 52 can be reduced, that is, the weak humidification operation in which the amount of humidification of the indoor Rin is small can be performed.
As the moisture is taken in by the heated outdoor air A3, the water retention amount of the absorbent material 52 decreases, i.e., the absorbent material 52 dries. When the absorbent 52 is dried, the outdoor air A3 flowing through the 1 st flow path P1 cannot acquire moisture from the absorbent 52. As a countermeasure, the absorbent 52 acquires moisture from the outdoor air A4 flowing through the 2 nd flow path P2. This can maintain the water retention amount of the absorbent 52 substantially constant, and can continuously perform the humidification operation.
Fig. 6 is a schematic view of the ventilator during the dehumidifying operation.
The dehumidifying operation is an air conditioning operation in which the outdoor air A3 is dehumidified and the dehumidified outdoor air A3 is supplied to the indoor Rin (i.e., the indoor unit 20). As shown in fig. 6, in the dehumidifying operation, the adsorption operation and the regeneration operation are alternately performed.
The adsorption operation is an operation of dehumidifying the outdoor air A3 by adsorbing moisture held by the outdoor air A3 with the absorbent 52. As shown in fig. 6, during the adsorption operation, the motor 54 continuously rotates the absorbent material 52. The 1 st heater 58 and the 2 nd heater 60 are in an OFF state, and do not heat the outdoor air A3. The 1 st fan 62 is turned ON, and thereby the outdoor air A3 flows in the 1 st flow path P1. The 1 st damper device 64 distributes the outdoor air A3 in the 1 st flow path P1 to the indoor unit 20. The 2 nd damper device 66 is in an open state, whereby the outdoor air A3 flows from the absorbent 52 to the 1 st fan 62. The 3 rd damper device 68 is in a closed state, and thus, the outdoor air A3 does not flow through the 3 rd flow path P3. The 2 nd fan 70 is in an OFF state, and thus, the flow of the outdoor air A4 is not generated in the 2 nd flow path P2.
In this adsorption operation, the outdoor air A3 flows into the 1 st flow path P1, and passes through the absorbent 52 without being heated by the 1 st and 2 nd heaters 58 and 60. At this time, the moisture held by the outdoor air A3 is adsorbed to the absorbent 52. Thereby, the moisture retention amount of the outdoor air A3 is reduced, that is, the outdoor air A3 is dried. The outdoor air A3 dried by the absorbent 52 is distributed to the indoor unit 20 by the 1 st damper device 64. Outdoor air A3 passing through the 1 st damper device 64 and reaching the indoor unit 20 via the ventilation duct 56 is blown out to the indoor Rin by the fan 24. By such adsorption operation, the dry outdoor air A3 is supplied to the indoor Rin, and the indoor Rin is dehumidified.
As the adsorption operation continues, the water retention amount of the absorbent 52 continues to increase, and as a result, the adsorption capacity of the absorbent 52 for moisture held in the outdoor air A3 decreases. In order to restore the adsorption capacity thereof, a regenerating operation for regenerating the absorbent 52 is performed.
During the regenerating operation, the motor 54 continuously rotates the absorbent material 52. The 1 st heater 58 and the 2 nd heater 60 are in an ON state, and heat the outdoor air A3. The 1 st fan 62 is turned ON, and thereby the outdoor air A3 flows in the 1 st flow path P1. The 1 st damper device 64 distributes the outdoor air A3 in the 1 st flow path P1 to the outdoor Rout and not to the indoor unit 20. The 2 nd damper device 66 is in an open state, whereby the outdoor air A3 flows from the absorbent 52 to the 1 st fan 62. The 3 rd damper device 68 is in a closed state, and thus, the outdoor air A3 does not flow through the 3 rd flow path P3. The 2 nd fan 70 is in an OFF state, and thus, the flow of the outdoor air A4 is not generated in the 2 nd flow path P2.
In this regenerating operation, the outdoor air A3 flows into the 1 st flow path P1, is heated by the 1 st and 2 nd heaters 58 and 60, and passes through the absorbent 52. At this time, the heated outdoor air A3 acquires a large amount of moisture from the absorbent 52. Thereby, a large amount of moisture is maintained in the outdoor air A3. At the same time, the water retention of the absorbent material 52 is reduced, i.e., the absorbent material 52 dries and its adsorption capacity is regenerated. The outdoor air A3 passing through the absorbent material 52 and retaining a large amount of moisture is distributed to the outdoor Rout by the 1 st damper device 64 and discharged to the outdoor Rout. Thus, during the regenerating operation in the dehumidifying operation, the outdoor air A3 that retains a large amount of moisture is not supplied to the indoor Rin by the regeneration of the absorbent 52.
By alternately performing such adsorption operation and regeneration operation, the adsorption capacity of the absorbent 52 can be maintained, and the dehumidification operation can be continuously performed.
The air conditioning operation (cooling operation, dehumidifying operation (weak cooling operation), heating operation) by the refrigeration cycle and the air conditioning operation (ventilation operation (supply ventilation operation, exhaust ventilation operation), humidifying operation, dehumidifying operation) by the ventilator 50 may be performed separately or simultaneously. For example, if the dehumidification operation by the refrigeration cycle and the dehumidification operation by the ventilator 50 are performed simultaneously, the indoor Rin can be dehumidified while maintaining the room temperature at a constant state.
The air conditioning operation performed by the air conditioner 10 may be selected by a user. For example, by a selection operation performed by the user on the remote controller 72 shown in fig. 1, the air conditioner 10 performs an air conditioning operation corresponding to the operation.
The configuration and operation of the air conditioner 10 according to the present embodiment have been described in brief. Further features of the structure of the air conditioner 10 according to the present embodiment will be described below.
The air conditioner 10 of the present embodiment includes the indoor unit 20, the outdoor unit 30, and the ventilator 50, and performs a heating and humidifying operation including both a heating operation and a humidifying operation. In the present embodiment, the humidification operation is to introduce the outdoor air A3 humidified by the ventilator 50 into the indoor Rin (see fig. 5). In this specification, the ventilator 50 may be referred to as a humidification unit.
In the related art, when the heating and humidifying operation is performed, the heating operation is started and the indoor temperature reaches the set temperature, and then the humidifying operation is performed. That is, the heating and humidifying operation is performed without performing the humidifying operation at the beginning of the heating and humidifying operation where the indoor temperature does not reach the set temperature, and the humidifying operation is performed in the middle of the heating operation.
In this case, the indoor Rin may be excessively dried at the beginning of the heating and humidifying operation. Alternatively, when the indoor temperature reaches the set temperature, the humidification operation may be started even when the indoor Rin is sufficiently humidified, and the humidity of the indoor Rin may excessively increase.
In the present embodiment, in order to efficiently perform the humidification operation during the heating operation, the air conditioner 10 determines whether to start the humidification operation based on the indoor absolute humidity of the indoor Rin and the target absolute humidity. For example, when the initial indoor absolute humidity of the heating and humidifying operation is low relative to the target absolute humidity, the air conditioner 10 starts the humidifying operation even before the indoor temperature reaches the set temperature Ts1, and suppresses excessive drying of the indoor Rin. Alternatively, when the indoor absolute humidity is higher than the target absolute humidity, the air conditioner 10 does not start the humidification operation and suppresses an excessive rise in the humidity of the indoor Rin.
Fig. 7 is a block diagram showing a configuration of controlling the air conditioner.
As shown in fig. 7, the air conditioner 10 includes a control section 80. The control unit 80 includes, for example, a memory storing a program and a processing circuit corresponding to a processor such as a CPU (Central Processing Unit ). The function of the control unit 80 may be constituted by hardware alone, or may be realized by combining hardware and software. The control unit 80 reads data or programs stored in the memory and performs various arithmetic processing to realize a predetermined function.
The control unit 80 controls the constituent elements of the air conditioner 10. In the present embodiment, the control unit 80 controls the outdoor unit 30 and the ventilator 50. Specifically, the control unit 80 controls the compressor 36, the expansion valve 38, and the four-way valve 40. The control unit 80 controls the motor 54, the 1 st heater 58, the 2 nd heater 60, the 1 st fan 62, the 1 st damper device 64, the 2 nd damper device 66, the 3 rd damper device 68, and the 2 nd fan 70.
In addition, the air conditioner 10 includes a temperature and humidity sensor 26 that detects an indoor temperature and an indoor humidity of the indoor Rin. In the present embodiment, the temperature and humidity sensor 26 detects the indoor temperature and indoor relative humidity of the indoor Rin. The temperature and humidity sensor 26 is mounted on the indoor unit 20. For example, the temperature and humidity sensor 26 may be disposed in the indoor unit 20 near a nozzle outlet for blowing air to the indoor heat exchanger 22.
Next, control of the heating and humidifying operation, which is control of the air conditioner 10 to perform the humidifying operation in the heating operation, will be described with reference to fig. 8 and 9.
Fig. 8 is a flowchart of control of the air conditioner according to embodiment 1 of the present disclosure. Fig. 9 is a timing chart of control of the air conditioner of embodiment 1 of the present disclosure.
For example, the control unit 80 starts the heating and humidifying operation when receiving a signal to start the heating and humidifying operation. For example, the control unit 80 starts the heating and humidifying operation based on a signal from the remote controller 72.
As shown in fig. 8, in step S1, the control unit 80 acquires the indoor absolute humidity Ha of the indoor Rin.
In the present embodiment, the control unit 80 calculates the indoor absolute humidity Ha based on the indoor temperature Tr of the indoor Rin and the indoor relative humidity Hs detected by the temperature and humidity sensor 26. Thereby, the control unit 80 obtains the indoor absolute humidity Ha.
In step S2, the control unit 80 calculates the target absolute humidity Ha1 at the set temperature Ts1 based on the set temperature Ts1 of the indoor Rin and the set relative humidity Hs 1. The set temperature Ts1 is, for example, an indoor temperature set by the remote controller 72. The target absolute humidity Ha1 is calculated from the set temperature Ts1 of the indoor Rin and the set relative humidity Hr 1.
In step S3, the control unit 80 determines whether or not the indoor absolute humidity Ha is smaller than the target absolute humidity Ha1. In the case where it is determined that the indoor absolute humidity Ha is smaller than the target absolute humidity Ha1, the flow advances to step S4. If it is determined that the indoor absolute humidity Ha is equal to or higher than the target absolute humidity Ha1, the flow returns to step S1. In the case where the flow returns to step S1, step S2 may be omitted.
In step S4, the control unit 80 performs a humidification operation. When the indoor absolute humidity Ha is smaller than the target absolute humidity Ha1, the control unit 80 starts the humidification operation. Specifically, the control unit 80 controls the ventilator 50 to perform the control of the humidification operation shown in fig. 5.
In step S5, the control unit 80 determines whether or not to stop the heating and humidifying operation. In step S5, when it is determined to stop the heating and humidifying operation, the control unit 80 stops the heating and humidifying operation. If it is determined that the heating and humidifying operation is not to be stopped, the flow repeats step S5. For example, the control unit 80 determines to stop the heating and humidifying operation if it receives a signal indicating the stop of the heating and humidifying operation. On the other hand, when the control unit 80 does not receive a signal indicating the stop of the heating and humidifying operation, it determines that the heating and humidifying operation is not to be stopped.
For example, as shown in fig. 9, at time 1, tmg, when the heating and humidifying operation is started, the control unit 80 performs steps S1 to S3. At time 1, tmg, the control unit 80 determines that the indoor absolute humidity Ha is smaller than the target absolute humidity Ha1, and starts the heating operation and the humidifying operation. That is, the control unit 80 starts both the heating operation and the humidifying operation at time 1, tmg.
In step S4 in which the heating operation and the humidification operation are performed, the control unit 80 changes the current value Qa input to the compressor 36 and the current value Qb input to the heaters 58 and 60 in accordance with the differences D1, D2, and D3 between the indoor absolute humidity Ha and the target absolute humidity Ha 1. Specifically, the controller 80 increases the current value Qa of the compressor 36 and decreases the current value Qb of the heaters 58 and 60 as the differences D1, D2, and D3 between the indoor absolute humidity Ha and the target absolute humidity Ha1 are smaller. The larger the current value Qa input to the compressor 36 is, the larger the heating capacity in the heating operation is. The larger the current value Qb input to the heaters 58 and 60 is, the larger the humidifying capacity of the humidifying operation is.
As shown in fig. 9, at the 1 st to 3 rd times tmg1 to tmg when the humidification operation is performed, the differences D1, D2, and D3 between the indoor absolute humidity Ha and the target absolute humidity Ha1 gradually decrease in order. The control unit 80 increases the current value Qa of the compressor 36 and decreases the current value Qb of the heaters 58 and 60 as the differences D1, D2, and D3 decrease.
The control unit 80 changes the current value Qa to be input to the compressor 36 and the current value Qb to be input to the heaters 58 and 60 in accordance with the differences D1, D2, and D3 between the indoor absolute humidity Ha and the target absolute humidity Ha1 so that the total value of the current value Qa and the current value Qb does not exceed a predetermined current value.
Then, if the difference between the indoor temperature Tr and the set temperature Ts1 is reduced to some extent before the indoor temperature Tr reaches the 4 th time tmg of the set temperature Ts1, the control unit 80 reduces the current value Qa of the compressor 36 and reduces the heating capacity to maintain the indoor temperature Tr at the set temperature Ts1. For example, when the difference between the indoor temperature Tr and the set temperature Ts1 is 0.5 ℃ or less, the control unit 80 may decrease the current value Qa of the compressor 36. Further, the temperature difference is not limited to 0.5 ℃.
As described above, the air conditioner 10 of the present embodiment includes the ventilator (humidification unit) 50 that humidifies the indoor Rin, and the control unit 80 that controls the ventilator 50. When the humidification operation is performed during the heating operation, the control unit 80 obtains the indoor absolute humidity Ha of the indoor Rin, and calculates the target absolute humidity Ha1 at the set temperature Ts1 based on the set temperature Ts1 of the indoor Rin and the set relative humidity Hs 1. When the control unit 80 determines that the indoor absolute humidity Ha is smaller than the target absolute humidity Ha1, it performs the humidification operation.
With this configuration, the humidification operation can be efficiently performed during the heating operation. In the air conditioner 10, the control unit 80 performs the humidification operation when it is determined that the indoor absolute humidity Ha is smaller than the target absolute humidity Ha 1. In the heating and humidifying operation, for example, when the indoor absolute humidity Ha is low, the control unit 80 may start the humidifying operation before the indoor temperature Tr reaches the set temperature Ts1, and can suppress excessive drying of the indoor Rin when the indoor temperature Tr reaches the set temperature Ts 1. Alternatively, the control unit 80 can suppress excessive humidification of the indoor Rin by not starting the humidification operation when the indoor absolute humidity Ha is high.
In this way, by judging the start of the humidification operation based on the indoor absolute humidity Ha and the target absolute humidity Ha1, the comfort and the energy saving can be improved.
The air conditioner 10 includes a temperature and humidity sensor 26 that detects an indoor temperature Tr and an indoor relative humidity Hs of the indoor Rin. The control unit 80 calculates the indoor absolute humidity Ha based on the indoor temperature Tr and the indoor relative humidity Hs detected by the temperature and humidity sensor 26. With this structure, the indoor absolute humidity Ha can be easily obtained. The indoor absolute humidity Ha can be obtained by using the temperature and humidity sensor 26 of the indoor unit 20.
The air conditioner 10 includes an outdoor unit 30 having an outdoor heat exchanger 32, a compressor 36 and an expansion valve 38, an indoor unit 20 having an indoor heat exchanger 22, and a refrigerant pipe 42 connecting the outdoor heat exchanger 32, the compressor 36, the expansion valve 38 and the indoor heat exchanger 22 and allowing a refrigerant to circulate. The ventilator (humidification unit) 50 has heaters 58 and 60. When the humidification operation is performed, the control unit 80 changes the current value Qa input to the compressor 36 and the current value Qb input to the heaters 58 and 60 according to the differences D1, D2, and D3 between the indoor absolute humidity Ha and the target absolute humidity Ha 1. With this configuration, the heating operation and the humidification operation can be efficiently performed, and excessive humidification of the indoor Rin or excessive drying of the indoor Rin can be suppressed. Further, the total value of the current value Qa of the compressor 36 and the current value Qb of the heaters 58 and 60 can be controlled not to exceed a predetermined value. Thus, for example, the heating and humidifying operation can be performed so as not to exceed a predetermined current value set by the circuit breaker.
(embodiment 2)
An air conditioner according to embodiment 2 of the present disclosure will be described.
In embodiment 2, differences from embodiment 1 will be mainly described. In embodiment 2, the same or equivalent structures as those in embodiment 1 will be described with the same reference numerals. In embodiment 2, the description repeated with embodiment 1 is omitted.
Fig. 10 is a flowchart of control of the air conditioner according to embodiment 2 of the present disclosure. Fig. 11 is a timing chart of control of the air conditioner of embodiment 2 of the present disclosure.
Embodiment 2 is different from embodiment 1 in that the humidification operation is stopped when the indoor absolute humidity Ha is equal to or higher than the target absolute humidity Ha1 during the humidification operation.
In fig. 10, steps S1 to S5 are the same as those in embodiment 1, and detailed description thereof is omitted.
As shown in fig. 10 and 11, in step S6, the control unit 80 determines whether or not the indoor absolute humidity Ha is equal to or higher than the target absolute humidity Ha1 during the humidification operation. In the case where the indoor absolute humidity Ha is equal to or higher than the target absolute humidity Ha1, the flow advances to step S7. When the indoor absolute humidity Ha is smaller than the target absolute humidity Ha1, step S6 is repeated.
In step S7, the control unit 80 stops the humidification operation. That is, the control unit 80 continues the heating operation and stops the humidification operation.
For example, as shown in fig. 11, if both the heating operation and the humidifying operation are performed, the indoor absolute humidity Ha may exceed the target absolute humidity Ha1 at the 5 th time tmg before the 4 th time tmg where the indoor temperature Tr reaches the set temperature Ts 1. In this case, the room Rin is sufficiently humidified before the room temperature Tr reaches the set temperature Ts 1. Therefore, the control unit 80 stops the humidification operation when the indoor absolute humidity Ha is equal to or higher than the target absolute humidity Ha1, thereby suppressing excessive humidification of the indoor Rin.
In the present embodiment, the control unit 80 reduces the current value Qa input to the compressor 36 of the outdoor unit 30 when the humidification operation is performed, as compared with when the heating operation is performed without the humidification operation. The control unit 80 reduces the heating capacity of the air conditioner 10 and reduces the current used for controlling the heating operation during the humidification operation, as compared with the heating operation. When the humidification operation is performed, the control unit 80 increases the current value Qb input to the heaters 58 and 60 of the ventilator 50, as compared with the case where the heating operation is performed without the humidification operation.
For example, at time 1, tmg, to time 5, tmg, the control unit 80 turns ON the humidification operation and performs the heating operation. After time 5, tmg, the control unit 80 turns OFF the humidification operation and turns ON the heating operation. In this case, the control unit 80 makes the current value Qa of the compressor 36 in the period from the 1 st time tmg to the 5 th time tmg smaller than the current value Qa of the compressor 36 after the 5 th time tmg 5. The control unit 80 makes the current value Qb of the heaters 58, 60 in the period from the 1 st time tmg to the 5 th time tmg longer than the current value Qb of the heaters 58, 60 at the 5 th time tmg5 and later.
As described above, in the air conditioner 10 according to the present embodiment, when both the heating operation and the humidification operation are performed, the control unit 80 stops the humidification operation if it is determined that the indoor absolute humidity Ha is equal to or higher than the target absolute humidity Ha 1. With this configuration, the humidification operation can be performed more efficiently during the heating operation. This can prevent excessive humidification of the indoor Rin when the indoor temperature Tr reaches the set temperature Ts 1.
When the heating operation and the humidification operation are performed, the control unit 80 reduces the current value Qa input to the compressor 36, as compared with the case where the heating operation is performed without the humidification operation. With this configuration, the heating capacity in the heating operation can be reduced when the humidification operation is performed, and excessive drying of the indoor Rin during the heating operation can be suppressed. Further, by reducing the current value Qa of the compressor 36, the current value used in the heating operation can be reduced.
Embodiment 3
An air conditioner according to embodiment 3 of the present disclosure will be described.
In embodiment 3, differences from embodiment 1 will be mainly described. In embodiment 3, the same or equivalent structures as those in embodiment 1 will be denoted by the same reference numerals. In embodiment 3, the description repeated with embodiment 1 is omitted.
Fig. 12 is a flowchart of control of the air conditioner according to embodiment 3 of the present disclosure. Fig. 13 is a timing chart of control of the air conditioner of embodiment 3 of the present disclosure.
Embodiment 3 differs from embodiment 1 in that the humidification operation is stopped when the temperature rise in the predetermined period is less than the 1 st threshold value during the humidification operation, and in that the humidification operation is resumed when the temperature rise in the predetermined period is equal to or greater than the 2 nd threshold value during the humidification operation.
In fig. 12, steps S1 to S5 are the same as those in embodiment 1, and detailed description thereof is omitted.
As shown in fig. 12 and 13, in step S8, the control unit 80 determines whether or not the temperature increase Δt1 of the indoor temperature Tr in the predetermined period T1 is smaller than the 1 st threshold value during the humidification operation. For example, the predetermined period T1 is 3 minutes, and the temperature rise Δt1 is 3 ℃.
In step S8, when the temperature increase Δt1 of the indoor temperature Tr is smaller than the 1 st threshold value, the flow advances to step S9. When the temperature increase Δt1 of the indoor temperature Tr is equal to or greater than the 1 st threshold value, the flow repeats step S8.
In step S9, the control unit 80 stops the humidification operation. The control unit 80 switches the humidification operation from ON to OFF at time tmg6 after the determination in step S8. For example, the control unit 80 turns OFF the heaters 58 and 60 of the ventilator 50. The control unit 80 may increase the current value Qa of the compressor 36 to improve the heating capacity.
In step S10, the control unit 80 determines whether or not the temperature increase Δt2 of the indoor temperature Tr in the predetermined period T2 during which the humidification operation is stopped is equal to or greater than the 2 nd threshold. For example, the predetermined period T2 is 3min, and the temperature rise Δt2 is 3 ℃.
In step S10, when the temperature increase Δt2 of the indoor temperature Tr is equal to or greater than the 2 nd threshold, the flow returns to step S4. When the temperature increase Δt2 of the indoor temperature Tr is smaller than the 2 nd threshold value, the flow repeats step S10.
The control unit 80 switches the humidification operation from OFF to ON at time point tmg7 after the determination in step S10. For example, the control unit 80 turns ON the heaters 58 and 60 of the ventilator 50. The control unit 80 may decrease the current value Qa of the compressor 36 to decrease the heating capacity.
In this way, when the temperature increase Δt2 of the indoor temperature Tr is equal to or greater than the 2 nd threshold value during the stop of the humidification operation, the control portion 80 executes step S4 to resume the humidification operation.
As described above, in the air conditioner 10 according to the present embodiment, when the humidification operation is performed, the control unit 80 determines whether or not the temperature increase Δt1 of the indoor Rin within the predetermined period T1 is smaller than the 1 st threshold. When the control unit 80 determines that the temperature increase Δt1 of the indoor Rin is smaller than the 1 st threshold value, it stops the humidification operation. With this configuration, when the humidification operation is performed initially in the heating and humidification operation, the humidification operation can be stopped based on the temperature rise Δt1 of the indoor Rin. This makes it possible to perform the humidification operation without reducing the heating capacity.
After stopping the humidification operation, the control unit 80 determines whether or not the temperature increase Δt2 of the indoor Rin within the predetermined period T2 is equal to or greater than the 2 nd threshold. When determining that the temperature increase Δt2 of the indoor Rin is equal to or greater than the 2 nd threshold, the control unit 80 starts the humidification operation. With this configuration, when the humidification operation is stopped, the humidification operation can be resumed based on the temperature rise Δt2 of the indoor Rin. This makes it possible to efficiently humidify the indoor Rin while performing the heating operation.
In the present embodiment, an example in which the predetermined periods t1 and t2 are 1min is described, but the present invention is not limited thereto. For example, the predetermined periods t1 and t2 may be set to arbitrary values.
In the present embodiment, the temperature increases Δt1 and Δt2 are 3 ℃. For example, the temperature increases Δt1 and Δt2 may be set to arbitrary values.
In the present embodiment, an example has been described in which the humidification operation is stopped when the temperature rise Δt1 is smaller than the 1 st threshold in step S9, but the present invention is not limited thereto. For example, in step S9, when the temperature increase Δt1 is smaller than the 1 st threshold, the control unit 80 may decrease the humidification ability or may increase the heating ability. For example, the control unit 80 may decrease the current value Qb to the heaters 58 and 60 and increase the current value Qa of the compressor 36.
Embodiment 4
An air conditioner according to embodiment 4 of the present disclosure will be described.
In embodiment 4, differences from embodiment 1 will be mainly described. In embodiment 4, the same or equivalent structures as those in embodiment 1 will be denoted by the same reference numerals. In embodiment 4, the description repeated with embodiment 1 is omitted.
Fig. 14 is a flowchart of control of the air conditioner according to embodiment 4 of the present disclosure. Fig. 15 is a timing chart of control of the air conditioner according to embodiment 4 of the present disclosure.
Embodiment 4 differs from embodiment 1 in that the predicted relative humidity Hp1 at the set temperature Ts1 is calculated, and in that the humidification operation is performed when the predicted relative humidity Hp1 is smaller than the set relative humidity Hs 1.
In fig. 14, steps S4 and S5 are the same as those in embodiment 1, and detailed description thereof is omitted.
As shown in fig. 14, if the heating and humidifying operation is started, the control unit 80 acquires the indoor relative humidity Hr and the indoor absolute humidity Ha of the indoor Rin in step S11. For example, the indoor relative humidity Hr is acquired by the temperature and humidity sensor 26. The indoor absolute humidity Ha is calculated based on the indoor temperature Tr and the indoor relative humidity Hr acquired by the temperature and humidity sensor 26.
In step S12, the control unit 80 calculates the predicted relative humidity Hp1 when the indoor temperature Tr reaches the set temperature Ts1, based on the set temperature Ts1 of the indoor Rin and the indoor absolute humidity Ha. The predicted relative humidity Hp1 is the relative humidity predicted when the indoor temperature Tr reaches the set temperature Ts 1. For example, the control unit 80 calculates the predicted relative humidity Hp1 based on the set temperature Ts1 of the indoor Rin set by the remote controller 72 and the indoor absolute humidity Ha acquired in step S11.
In step S13, the control unit 80 determines whether or not the predicted relative humidity Hp1 is smaller than the set relative humidity Hs1. The set relative humidity Hs1 is, for example, a target relative humidity in the room set by the remote control 72, and is set by a user operating the remote control 72. For example, the control unit 80 acquires the set relative humidity Hs1 set by the remote controller 72.
When it is determined that the predicted relative humidity Hp1 is smaller than the set relative humidity Hs1, the flow advances to step S4. When it is determined that the predicted relative humidity Hp1 is greater than the set relative humidity Hs1, the flow returns to step S11. In the case where the flow returns to step S11, step S12 may be omitted.
In step S4, the control unit 80 performs a humidification operation. When the predicted relative humidity Hp1 is smaller than the set relative humidity Hs1, the control unit 80 starts the humidification operation. Specifically, the control unit 80 controls the ventilator 50 to perform the control of the humidification operation shown in fig. 5.
In step S5, the control unit 80 determines whether or not to stop the heating and humidifying operation.
For example, as shown in fig. 15, at time 1, tmg, when the heating and humidifying operation is started, the control unit 80 executes steps S11 to S13. Since the relative humidity Hp1 is predicted to be smaller than the set relative humidity Hs1 at time 1, tmg, the control unit 80 turns ON the heating operation and turns ON the humidifying operation.
When the humidification operation is performed, the control unit 80 changes the current value Qa input to the compressor 36 and the current value Qb input to the heaters 58 and 60 in accordance with the differences D11 and D12 between the indoor relative humidity Hr and the set relative humidity Hs1 after the indoor relative humidity Hr becomes smaller than the set relative humidity Hs 1. Specifically, the controller 80 increases the current value Qa of the compressor 36 and decreases the current value Qb of the heaters 58 and 60 as the difference D11 and D12 between the indoor relative humidity Hr and the set relative humidity Hs1 is smaller.
As shown in fig. 15, at time 2 and time 3 after time 1, tmg11, tmg, tmg, the differences D11, D12 between the indoor relative humidity Hr and the set relative humidity Hs1 gradually decrease. The control unit 80 increases the current value Qa of the compressor 36 as the difference D11, D12 decreases, and decreases the current value Qb of the heaters 58, 60.
The control unit 80 changes the current value Qa to be input to the compressor 36 and the current value Qb to be input to the heaters 58 and 60 in accordance with the differences D11 and D12 between the indoor relative humidity Hr and the set relative humidity Hs1 so that the total value of the current value Qa and the current value Qb does not exceed a predetermined current value.
Then, if the difference between the indoor temperature Tr and the set temperature Ts1 is reduced to some extent before the indoor temperature Tr reaches the 4 th time tmg of the set temperature Ts1, the control unit 80 reduces the current value Qa of the compressor 36 and reduces the heating capacity to maintain the indoor temperature Tr at the set temperature Ts1. For example, when the difference between the indoor temperature Tr and the set temperature Ts1 is 0.5 ℃ or less, the control unit 80 may decrease the current value Qa of the compressor 36. Further, the temperature difference is not limited to 0.5 ℃.
As described above, in the air conditioner 10 according to the present embodiment, when the control unit 80 performs the humidification operation during the heating operation, the indoor relative humidity Hr and the indoor absolute humidity Ha of the indoor Rin are obtained. The control unit 80 calculates the predicted relative humidity Hp1 when the indoor temperature Tr reaches the set temperature Ts1 based on the set temperature Ts1 of the indoor Rin and the indoor absolute humidity Ha, and performs the humidification operation when it is determined that the predicted relative humidity Hp1 is smaller than the set relative humidity Hs 1.
With this configuration, the humidification operation can be efficiently performed during the heating operation. In the air conditioner 10, the control unit 80 performs the humidification operation when it is determined that the predicted relative humidity Hp1 calculated based on the set temperature Ts1 and the indoor absolute humidity Ha is smaller than the set relative humidity Hs 1. In the heating and humidifying operation, for example, when the indoor relative humidity Hr is low, the control unit 80 starts the humidifying operation before the indoor temperature Tr reaches the set temperature Ts1, and can suppress excessive drying of the indoor Rin. Alternatively, the control unit 80 can suppress excessive humidification of the indoor Rin by not starting the humidification operation when the indoor relative humidity Hr is high.
In this way, the start of the humidification operation is determined based on the indoor relative humidity Hr and the predicted relative humidity Hp1 when the set temperature Ts1 is reached and the set temperature Ts1 calculated based on the indoor absolute humidity Ha, so that the comfort and energy saving performance can be improved.
When the humidification operation is performed, the control unit 80 changes the current value Qa input to the compressor 36 and the current value Qb input to the heaters 58 and 60 in accordance with the differences D11 and D12 between the indoor relative humidity Hr and the set relative humidity Hs1 after the indoor relative humidity Hr becomes smaller than the set relative humidity Hs 1. With this configuration, the heating operation and the humidification operation can be efficiently performed, and excessive humidification of the indoor Rin or excessive drying of the indoor Rin can be suppressed. Further, the total value of the current value Qa of the compressor 36 and the current value Qb of the heaters 58 and 60 can be controlled not to exceed a predetermined value. Thus, for example, the heating and humidifying operation can be performed so as not to exceed a predetermined current value set by the circuit breaker.
In the present specification, the terms "1 st", "2 nd", and the like are used for illustration only, and should not be construed as indicating or implying a relative importance or order of technical features. Features defined as "1 st" and "2 nd" are either explicit or implicit inclusion of one or more of the features.
The present invention has been described above by way of the above embodiments, but the present invention is not limited to the above embodiments. The technique of the present disclosure is not limited to this, and may be suitably applied to embodiments in which modifications, substitutions, additions, omissions, and the like are made.
The present disclosure is fully described in connection with the preferred embodiments with reference to the accompanying drawings, but various variations or modifications will be apparent to those skilled in the art. Such variations and modifications are to be understood as included within the scope of this disclosure, which is not to be depart from the spirit and scope of the present disclosure as set forth in the appended claims.
Additionally, the general and specific aspects of the disclosure may also be implemented by systems, methods, computer programs, and computer-readable storage media, and combinations thereof.
For example, in the case of the above embodiment, an example in which the ventilator 50 mounted to the outdoor unit 30 performs the humidification operation has been described, but the present invention is not limited thereto. The humidifying unit may be any device capable of humidifying the indoor Rin. For example, the humidification unit disposed in the room Rin may perform the humidification operation. In this case, the air conditioner 10 may not include the ventilator 50.
In embodiments 1 to 4, the example in which the temperature and humidity sensor 26 detects the indoor temperature Tr and the indoor relative humidity of the indoor Rin has been described, but the present invention is not limited thereto. For example, the temperature and humidity sensor 26 may detect the indoor absolute humidity Ha of the indoor Rin. In this case, the control unit 80 may acquire the indoor absolute humidity Ha from the temperature and humidity sensor 26. Alternatively, the control unit 80 may receive the indoor absolute humidity Ha from a measurement device that measures the indoor absolute humidity via a network. In this case, the control unit 80 may include a communication circuit that communicates via a network.
In embodiments 1 to 3, the control unit 80 executes the steps S1 to S3 at the 1 st time tmg when the heating and humidifying operation is started, but the present invention is not limited thereto. For example, the control unit 80 may start the heating operation without starting the humidification operation at the 1 st timing tmg1 and may perform steps S1 to S3 at a timing subsequent to the 1 st timing tmg.
In embodiment 4, the control unit 80 has been described as an example of determining the implementation of the humidification operation based on the set relative humidity Hs1 and the predicted relative humidity Hp1, but is not limited thereto. For example, the control unit 80 may determine that the humidification operation is stopped based on the set relative humidity Hs1 and the predicted relative humidity Hp 1. The control unit 80 may stop the humidification operation when it is determined that the predicted relative humidity Hp1 is greater than the set relative humidity Hs1 during the humidification operation.
In embodiment 4, the control unit 80 may vary the current value Qa to be input to the compressor 36 and the current value Qb to be input to the heaters 58 and 60 according to the difference between the indoor relative humidity Hr and the predicted relative humidity Hp 1.
In embodiment 4, during the humidification operation, the control unit 80 may stop the humidification operation when the temperature increase Δt1 of the indoor temperature Tr within the predetermined period T1 is smaller than the 1 st threshold value. In addition, during the stop of the humidification operation, the control unit 80 may resume the humidification operation when the temperature increase Δt2 of the indoor temperature Tr within the predetermined period T2 is equal to or greater than the 2 nd threshold.
(summary of the embodiments)
(1) The air conditioner of the present disclosure includes:
a humidifying unit that humidifies the room; and
a control unit for controlling the humidifying unit,
the control unit, when the humidifying operation is performed during the heating operation,
acquiring the indoor absolute humidity in the room,
calculating a target absolute humidity at a set temperature based on the set temperature and the set relative humidity in the room,
when it is determined that the indoor absolute humidity is smaller than the target absolute humidity, the humidification operation is performed.
(2) The air conditioner of (1) may further include a temperature and humidity sensor for detecting an indoor temperature and an indoor relative humidity of the room,
the control unit may calculate the indoor absolute humidity based on the indoor temperature and the indoor relative humidity detected by the temperature and humidity sensor.
(3) The air conditioner of (1) or (2) may further include: an outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger to each other for circulating a refrigerant,
The control unit may reduce a current value input to the compressor when the humidification operation is performed, as compared with a case where the heating operation is performed without the humidification operation.
(4) The air conditioner of (1) or (2) may further include: an outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger to each other for circulating a refrigerant,
the humidifying unit is provided with a heater and is provided with a heating device,
the control unit may change a current value input to the compressor and a current value input to the heater in accordance with a difference between the indoor absolute humidity and the target absolute humidity when the humidification operation is performed.
(5) The air conditioner according to any one of (1) to (4),
when the control unit performs the humidification operation,
determining whether or not the temperature rise in the chamber within a predetermined period is less than a 1 st threshold,
and stopping the humidifying operation when the temperature rise in the chamber is determined to be smaller than the 1 st threshold value.
(6) In the air conditioner of (5),
after stopping the humidification operation, the control unit may,
judging whether the temperature rise in the room within a predetermined period is equal to or greater than a 2 nd threshold,
when it is determined that the temperature in the room has risen to the 2 nd threshold or higher, the humidification operation is started.
(7) The air conditioner according to any one of (1) to (6),
the humidifying unit may include:
an absorbing material provided in the outdoor unit and absorbing moisture of outdoor air;
a flow path passing through the absorbent material for circulation of outdoor air;
a heater that heats the outdoor air on an upstream side of the absorbent in the flow path;
a fan that sends the outdoor air to the flow path; and
and a damper device for distributing the outdoor air flowing through the flow path to the outdoor and indoor units.
(8) The air conditioner of the present disclosure includes:
a humidifying unit that humidifies the room; and
a control unit for controlling the humidifying unit,
the control unit, when the humidifying operation is performed during the heating operation,
acquiring the indoor absolute humidity in the room,
calculating a predicted relative humidity when the indoor temperature reaches the set temperature based on the set temperature in the room and the indoor absolute humidity,
And performing the humidification operation when it is determined that the predicted relative humidity is less than the set relative humidity in the room.
(9) The air conditioner of (8) may further include a temperature and humidity sensor for detecting the indoor temperature and the indoor relative humidity,
the control unit may calculate the indoor absolute humidity based on the indoor temperature and the indoor relative humidity detected by the temperature and humidity sensor.
(10) The air conditioner of (8) or (9) may further comprise:
an outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger to each other for circulating a refrigerant,
the control unit may reduce a current value input to the compressor when the humidification operation is performed, as compared with a case where the heating operation is performed without the humidification operation.
(11) The air conditioner of (8) or (9) may further comprise:
an outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger to each other for circulating a refrigerant,
The humidifying unit is provided with a heater and is provided with a heating device,
the control unit may be configured to vary a current value input to the compressor and a current value input to the heater in accordance with a difference between the indoor relative humidity and the set relative humidity when the humidification operation is performed.
(12) The air conditioner according to any one of (8) to (11),
when the control unit performs the humidification operation,
determining whether or not the temperature rise in the chamber within a predetermined period is less than a 1 st threshold,
and stopping the humidifying operation when the temperature rise in the chamber is determined to be smaller than the 1 st threshold value.
(13) In the air conditioner of (12),
after stopping the humidification operation, the control unit may,
judging whether the temperature rise in the room within a predetermined period is equal to or greater than a 2 nd threshold,
when it is determined that the temperature in the room has risen to the 2 nd threshold or higher, the humidification operation is started.
(14) The air conditioner according to any one of (8) to (13),
the humidifying unit may include:
an absorbing material provided in the outdoor unit and absorbing moisture of outdoor air;
a flow path passing through the absorbent material for circulation of outdoor air;
A heater that heats the outdoor air on an upstream side of the absorbent in the flow path;
a fan that sends the outdoor air to the flow path; and
and a damper device for distributing the outdoor air flowing through the flow path to the outdoor and indoor units.
(15) The control method of the air conditioner of the present disclosure performs a humidifying operation at the time of a heating operation, and includes:
acquiring indoor absolute humidity;
calculating a target absolute humidity at a set temperature based on the set temperature and the set relative humidity in the room; and
and a step of executing the humidification operation when it is determined that the indoor absolute humidity is smaller than the target absolute humidity.
(16) The control method of the air conditioner of the present disclosure performs a humidifying operation at the time of a heating operation, and includes:
acquiring indoor absolute humidity;
calculating a predicted relative humidity when the indoor temperature reaches the set temperature based on the indoor set temperature and the indoor absolute humidity; and
and a step of executing the humidification operation when it is determined that the predicted relative humidity is smaller than the set relative humidity in the room.
(17) The program of the present disclosure causes the air conditioner to execute the control method of (15) or (16).
(18) The computer-readable storage medium of the present disclosure stores a program for causing an air conditioner to execute the control method of (15) or (16).
Industrial applicability
The present disclosure is applicable to any air conditioner that performs a heating and humidifying operation.
Claims (18)
1. An air conditioner, comprising:
a humidifying unit that humidifies the room; and
a control unit for controlling the humidifying unit,
the control unit, when the humidifying operation is performed during the heating operation,
acquiring the indoor absolute humidity in the room,
calculating a target absolute humidity at a set temperature based on the set temperature and the set relative humidity in the room,
and performing the humidification operation when it is determined that the indoor absolute humidity is smaller than the target absolute humidity.
2. An air conditioner as set forth in claim 1, wherein:
also comprises a temperature and humidity sensor for detecting the indoor temperature and indoor relative humidity,
the control unit calculates the indoor absolute humidity based on the indoor temperature and the indoor relative humidity detected by the temperature and humidity sensor.
3. An air conditioner as set forth in claim 1, further comprising:
An outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger, wherein the refrigerant circulates through the refrigerant pipe,
the control unit reduces the current value input to the compressor when the humidification operation is performed, as compared with when the heating operation is performed without the humidification operation.
4. An air conditioner as set forth in claim 1, further comprising:
an outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger, wherein the refrigerant circulates through the refrigerant pipe,
the humidifying unit is provided with a heater and is provided with a heating device,
the control unit changes a current value input to the compressor and a current value input to the heater in accordance with a difference between the indoor absolute humidity and the target absolute humidity when the humidification operation is performed.
5. An air conditioner as set forth in claim 1, wherein:
when the control unit performs the humidification operation,
determining whether or not the temperature rise in the chamber within a predetermined period is less than a 1 st threshold,
and stopping the humidifying operation when the temperature rise in the chamber is determined to be smaller than the 1 st threshold value.
6. An air conditioner as defined in claim 5, wherein:
after stopping the humidification operation,
judging whether the temperature rise in the room within a predetermined period is equal to or greater than a 2 nd threshold,
when it is determined that the temperature in the room has risen to the 2 nd threshold or higher, the humidification operation is started.
7. An air conditioner as set forth in claim 1, wherein:
the humidification unit includes:
an absorbing material provided in the outdoor unit and absorbing moisture of outdoor air;
a flow path passing through the absorbent material for circulation of outdoor air;
a heater that heats the outdoor air on an upstream side of the absorbent in the flow path;
a fan that sends the outdoor air to the flow path; and
and a damper device for distributing the outdoor air flowing through the flow path to the outdoor and indoor units.
8. An air conditioner, comprising:
a humidifying unit that humidifies the room; and
a control unit for controlling the humidifying unit,
the control unit, when the humidifying operation is performed during the heating operation,
acquiring the indoor absolute humidity in the room,
calculating a predicted relative humidity when the indoor temperature reaches the set temperature based on the set temperature in the room and the indoor absolute humidity,
and performing the humidification operation when it is determined that the predicted relative humidity is less than the set relative humidity in the room.
9. An air conditioner as set forth in claim 8, wherein:
also comprises a temperature and humidity sensor for detecting the indoor temperature and indoor relative humidity,
the control unit calculates the indoor absolute humidity based on the indoor temperature and the indoor relative humidity detected by the temperature and humidity sensor.
10. An air conditioner as set forth in claim 8, further comprising:
an outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger, wherein the refrigerant circulates through the refrigerant pipe,
The control unit reduces the current value input to the compressor when the humidification operation is performed, as compared with when the heating operation is performed without the humidification operation.
11. An air conditioner as set forth in claim 8, further comprising:
an outdoor unit having an outdoor heat exchanger, a compressor, and an expansion valve;
an indoor unit having an indoor heat exchanger; and
a refrigerant pipe connecting the outdoor heat exchanger, the compressor, the expansion valve, and the indoor heat exchanger, wherein the refrigerant circulates through the refrigerant pipe,
the humidifying unit is provided with a heater and is provided with a heating device,
the control unit also acquires an indoor relative humidity in the room, and when the humidification operation is performed, changes a current value input to the compressor and a current value input to the heater in accordance with a difference between the indoor relative humidity and the set relative humidity.
12. An air conditioner as set forth in claim 8, wherein:
when the control unit performs the humidification operation,
determining whether or not the temperature rise in the chamber within a predetermined period is less than a 1 st threshold,
and stopping the humidifying operation when the temperature rise in the chamber is determined to be smaller than the 1 st threshold value.
13. An air conditioner as set forth in claim 12, wherein:
after stopping the humidification operation,
judging whether the temperature rise in the room within a predetermined period is equal to or greater than a 2 nd threshold,
when it is determined that the temperature in the room has risen to the 2 nd threshold or higher, the humidification operation is started.
14. An air conditioner as set forth in claim 8, wherein:
the humidification unit includes:
an absorbing material provided in the outdoor unit and absorbing moisture of outdoor air;
a flow path passing through the absorbent material for circulation of outdoor air;
a heater that heats the outdoor air on an upstream side of the absorbent in the flow path;
a fan that sends the outdoor air to the flow path; and
and a damper device for distributing the outdoor air flowing through the flow path to the outdoor and indoor units.
15. A control method of an air conditioner that performs a humidification operation during a heating operation, the control method comprising:
acquiring indoor absolute humidity;
calculating a target absolute humidity at a set temperature based on the set temperature and the set relative humidity in the room; and
And a step of executing the humidification operation when it is determined that the indoor absolute humidity is smaller than the target absolute humidity.
16. A control method of an air conditioner that performs a humidification operation during a heating operation, the control method comprising:
acquiring indoor absolute humidity;
calculating a predicted relative humidity when the indoor temperature reaches the set temperature based on the indoor set temperature and the indoor absolute humidity; and
and a step of executing the humidification operation when it is determined that the predicted relative humidity is smaller than the set relative humidity in the room.
17. A program product comprising a program for causing an air conditioner to perform the control method of claim 15 or 16 when executed by a processor.
18. A computer-readable storage medium storing a program for causing an air conditioner to execute the control method of claim 15 or 16 when executed by a processor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-151670 | 2022-09-22 | ||
| JP2022151670A JP2024046347A (en) | 2022-09-22 | 2022-09-22 | Air conditioner, air conditioner control method, program and computer-readable storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117739412A true CN117739412A (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311234848.6A Pending CN117739412A (en) | 2022-09-22 | 2023-09-22 | Air conditioner, control method for air conditioner, program, and computer-readable storage medium |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2024046347A (en) |
| CN (1) | CN117739412A (en) |
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2022
- 2022-09-22 JP JP2022151670A patent/JP2024046347A/en active Pending
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- 2023-09-22 CN CN202311234848.6A patent/CN117739412A/en active Pending
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| JP2024046347A (en) | 2024-04-03 |
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