CN115968434A - Indoor air conditioning system - Google Patents
Indoor air conditioning system Download PDFInfo
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- CN115968434A CN115968434A CN202180052988.4A CN202180052988A CN115968434A CN 115968434 A CN115968434 A CN 115968434A CN 202180052988 A CN202180052988 A CN 202180052988A CN 115968434 A CN115968434 A CN 115968434A
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- control unit
- indoor
- water
- air conditioning
- conditioning system
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 192
- 238000004140 cleaning Methods 0.000 claims abstract description 113
- 239000008400 supply water Substances 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims description 64
- 238000012790 confirmation Methods 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 abstract description 19
- 230000005494 condensation Effects 0.000 abstract description 19
- 239000003507 refrigerant Substances 0.000 description 62
- 238000007791 dehumidification Methods 0.000 description 55
- 238000001816 cooling Methods 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 24
- 230000006870 function Effects 0.000 description 12
- 238000007664 blowing Methods 0.000 description 11
- 238000001704 evaporation Methods 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 230000004048 modification Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 238000012546 transfer Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 238000007710 freezing Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 102220621241 Proline-rich membrane anchor 1_S32A_mutation Human genes 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 230000001186 cumulative effect Effects 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000011045 prefiltration Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0087—Indoor units, e.g. fan coil units with humidification means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
Abstract
The problem to be solved by the present disclosure is to ensure the amount of dew condensation required for a cleaning operation. In an indoor air conditioning system (1), a control unit (8) has an indoor control unit (81) that determines to perform a cleaning operation. In the indoor air conditioning system (1), when the execution of the cleaning operation is determined, the control unit (8) performs at least one of a notification to the user via a display screen (15 a) of the remote controller (15) or a speaker (82), the notification prompting the user to perform the cleaning operation, the notification prompting the user to confirm the remaining water amount in the water tank (160), and the notification prompting the user to supply water to the water tank (160). As a result, water cut-off of the humidifier is suppressed during the cleaning operation, and condensed water (dew condensation water) necessary for cleaning can be ensured.
Description
Technical Field
To an indoor air conditioning system that performs a cleaning operation for cleaning an indoor heat exchanger.
Background
In recent years, air conditioners capable of automatically cleaning indoor heat exchangers of indoor units have been introduced into the market. For example, an air conditioner described in patent document 1 (japanese patent application laid-open No. 2010-014288) includes the following: a defrosting operation is performed to defrost at least a part of fins of an indoor heat exchanger, and then, by the defrosting operation, defrost water is generated to remove dirt attached to the surfaces of the fins.
Disclosure of Invention
Problems to be solved by the invention
The present disclosure provides an air conditioner capable of ensuring humidity required for cleaning a heat exchanger.
Means for solving the problems
The indoor air conditioning system according to claim 1 includes an indoor air conditioning unit, a humidifier, a control unit, and a notification unit. The indoor unit of the air conditioner performs a cleaning operation for cleaning the indoor heat exchanger. In the cleaning operation, the indoor heat exchanger is caused to function as an evaporator, and moisture contained in the indoor air is condensed in the indoor heat exchanger to clean the indoor heat exchanger. The humidifier performs humidification in the chamber. The control unit has an execution determination unit for determining execution of the cleaning operation. When it is determined to perform the washing operation, the control unit notifies the user of the stored water in the humidifier via the notification unit.
In this indoor air conditioning system, since notification is made regarding the amount of water stored in the humidifier when the indoor heat exchanger is subjected to the cleaning operation, it is possible to suppress water interruption of the humidifier during the cleaning operation and ensure condensed water (dew condensation water) necessary for cleaning.
The washing operation includes the following operations: the freezing operation is performed so that the surface temperature of the indoor heat exchanger is below the freezing point, and after the freezing operation is completed, the indoor heat exchanger is defrosted and cleaned.
An indoor air conditioning system according to claim 2 is the indoor air conditioning system according to claim 1, wherein the humidifier has a water tank for storing water for humidification. When it is determined to perform the cleaning operation, the control unit notifies the user of the fact that the cleaning operation is performed and/or prompts confirmation of the remaining water amount in the tank via the notification unit.
An indoor air conditioning system according to claim 3 is the indoor air conditioning system according to claim 1, wherein the humidifier has a water tank for storing water for humidification. When it is determined to perform the cleaning operation, the control unit notifies the user of the fact that the cleaning operation is performed and/or prompts the user to supply water to the tank via the notification unit.
An indoor air conditioning system according to claim 4 is the indoor air conditioning system according to any one of claims 1 to 3, wherein the humidifier has a water tank for storing water for humidification. The humidifier detects or estimates the residual water amount of the water tank, and when the residual water amount is judged to be less than or equal to the 1 st specified amount, the humidifier informs the user of prompting the water supply to the water tank through the informing part.
In this indoor air conditioning system, the remaining water amount can be accurately grasped.
The indoor air conditioning system according to claim 5 is the indoor air conditioning system according to claim 4, wherein the control unit further includes a history acquisition unit. A history acquisition unit acquires the operation history of the humidifier and the history of water supply to the water tank. The control unit estimates the amount of residual water based on the operation time of the humidifier that has elapsed since the water was supplied to the water tank.
In this indoor air conditioning system, a humidifier without a remaining water amount detection unit can be employed.
An indoor air conditioning system according to claim 6 is the indoor air conditioning system according to any one of claims 2 to 5, wherein the control unit waits for the cleaning operation until a response to the notification is made.
In this indoor air conditioning system, it is possible to suppress the start of the cleaning operation in a state where the condensed water (dew condensation water) required for cleaning is insufficient.
The indoor air conditioning system according to claim 7 further includes an operation unit capable of inputting an instruction to start the washing operation in the indoor air conditioning system according to claim 6. When a signal for starting the washing operation is input from the operation unit to the notification, the control unit starts the washing operation.
An indoor air conditioning system according to claim 8 is the indoor air conditioning system according to claim 4, wherein the control unit starts the cleaning operation when it is determined that the remaining water amount is equal to or more than the 2 nd predetermined amount, which is larger than the 1 st predetermined amount.
Drawings
Fig. 1 is a conceptual diagram illustrating an example of the configuration of an indoor air conditioning system according to embodiment 1.
Fig. 2 is a block diagram for explaining the structure of the indoor air conditioning system of fig. 1.
Fig. 3 is a conceptual diagram illustrating an example of an air conditioner.
Fig. 4 is a cross-sectional view showing an example of the structure of an indoor unit of an indoor air conditioning system.
Fig. 5 is a diagram for explaining a refrigerant circuit and an air flow path included in the indoor air conditioning system of fig. 1.
Fig. 6 is a block diagram for explaining the configuration of the control unit.
Fig. 7 is an exploded perspective view showing a configuration example of the humidifier of fig. 1.
Fig. 8 is a perspective view showing an external appearance of the humidifier of fig. 1.
Fig. 9 is a flowchart for explaining the operation of the indoor air conditioning system.
Fig. 10 is a flowchart showing an example of the operation of the control unit when automatically shifting to the cleaning operation.
Fig. 11A is an operation flowchart of the humidifier control in the cleaning operation.
Fig. 11B is an operation flowchart of the humidifier control in the cleaning operation of the indoor air conditioning system according to modification 1.
Fig. 11C is an operation flowchart of the humidifier control in the cleaning operation of the indoor air conditioning system according to modification 2.
Fig. 12 is an operation flowchart of the humidifier control in the cleaning operation of the indoor air conditioning system according to modification 3.
Fig. 13 is a flowchart for explaining the operation of the indoor air conditioning system according to embodiment 2.
Detailed Description
< embodiment 1 >
(1) Integral structure
Fig. 1 is a conceptual diagram illustrating an example of the configuration of an indoor air conditioning system 1 according to embodiment 1. In fig. 1, a room air conditioning system 1 has an air conditioner 10 and a humidifier 106 with an air cleaning function (hereinafter referred to as a humidifier 106).
As shown in fig. 1, the indoor unit 2 of the air conditioner 10 and the humidifier 106 are connected via a wireless LAN router 210. The wireless LAN adapter 85 is connected to the indoor control unit 81 (see fig. 2) of the indoor unit 2.
Here, the case where the wireless LAN adapter 85 is externally provided to the indoor unit 2 is shown. However, the wireless LAN adapter 85 may be built in the indoor unit 2. The humidifier control unit 89 (see fig. 2) of the humidifier 106 incorporates the function of a wireless LAN adapter.
Fig. 2 is a block diagram for explaining the configuration of the indoor air conditioning system 1 of fig. 1. In fig. 1 and 2, the indoor air conditioning system 1 including the air conditioner 10 and the humidifier 106 includes a controller 8. When the cleaning operation is performed, the indoor control unit 81 instructs the humidifier 106 to operate via the wireless LAN router 210 and the wireless LAN adapter 85.
The control unit 8 includes an indoor control unit 81, an outdoor control unit 86, and a humidifier control unit 89. As shown in fig. 1, the indoor air conditioning system 1 can instruct the air conditioner 10 and the humidifier 106 using a communication terminal 230 such as a smartphone. For example, the instruction output from the communication terminal 230 such as a smartphone is transmitted to the air conditioner 10 and the humidifier 106 via the wireless LAN router 210 or via the internet 240, the broadband router 220, and the wireless LAN router 210.
(2) Air conditioner 10
Fig. 3 is a conceptual diagram illustrating an example of the air conditioner 10. In fig. 3, the air conditioner 10 includes an indoor unit 2, an outdoor unit 4, and a remote controller 15. The indoor unit 2 and the outdoor unit 4 are connected by refrigerant communication pipes 11 and 12. The indoor unit 2, the outdoor unit 4, and the refrigerant communication pipes 11 and 12 constitute a refrigerant circuit.
The indoor unit 2 and the outdoor unit 4 are controlled by the control unit 8. In the refrigerant circuit, for example, a vapor compression refrigeration cycle is repeatedly performed during a cooling operation, a heating operation, and a dehumidifying operation.
The indoor unit 2 is installed in the room RM and performs air conditioning in the room RM. In embodiment 1, the indoor unit 2 is mounted on a wall WL of a room RM. However, the indoor unit 2 is not limited to the type provided on the wall WL of the room RM. The indoor unit 2 may be installed on the ceiling CE or the floor FL, for example.
Fig. 4 is a cross-sectional view showing an example of the structure of the indoor unit 2 of the air conditioner 10. Fig. 5 is a diagram for explaining a refrigerant circuit of the air conditioner 10. In fig. 4 and 5, the indoor unit 2 includes an indoor heat exchanger 21. The indoor unit 2 causes indoor air (air in the room RM) to pass through the indoor heat exchanger 21, thereby performing heat exchange of the indoor air.
The control unit 8 controls the indoor unit 2 to perform a cleaning operation, which is an operation of cleaning the indoor heat exchanger 21. During the cleaning operation, the controller 8 controls the humidifier 106 so as to increase the indoor humidity, and cleans the surface of the indoor heat exchanger 21 by generating dew condensation water on the surface of the indoor heat exchanger 21. The humidifier 106 may be started before the operation of the air conditioner 10, or the humidifier 6 may be started simultaneously with the operation of the air conditioner 10.
Preferably, the controller 8 controls the humidifier 106 so that the humidity in the chamber becomes a predetermined humidity during the cleaning operation. In this case, after the humidity in the room is set to a predetermined humidity by the humidifier 106, the controller 8 generates dew condensation water on the surface of the indoor heat exchanger 21 and cleans the surface. The surface of the indoor heat exchanger 21 described here includes heat transfer fins 21a.
The control section 8 is realized by a microcomputer, for example. For example, in the cleaning operation, the control unit 8 first causes the humidifier 106 to perform the humidification operation, and then causes the indoor unit 2 to perform the cleaning operation.
In the case of indoor drying due to weather conditions or the like, it is difficult to clean the surface of the indoor heat exchanger 21 by causing condensation on the surface of the indoor heat exchanger 21 in an indoor dry state.
However, even if the room is dry due to weather conditions or the like, the indoor air conditioning system 1 can increase the humidity in the room to a predetermined humidity by humidification in the cleaning operation.
The indoor air conditioning system 1 can perform a cleaning operation in a state where the indoor humidity is increased to a predetermined humidity.
In this way, the indoor air conditioning system 1 is not affected by the drying of the room due to weather conditions or the like, and can clean the surface of the indoor heat exchanger 21 by generating sufficient condensation on the surface.
(2-1) indoor Unit 2
As shown in fig. 2 to 5, the indoor unit 2 includes an indoor heat exchanger 21, an indoor fan 22, a casing 23, an air filter 24, a drain pan 26, a horizontal baffle 27, a vertical baffle (not shown), and a discharge unit 29. The indoor unit 2 includes an indoor temperature sensor 31, an indoor humidity sensor 32, a duct temperature sensor 33, a duct humidity sensor 34, and an indoor heat exchanger temperature sensor 35.
In the description of the direction, expressions such as "upper", "lower", "front" and "rear" are used in accordance with the directions indicated by arrows in fig. 3 and 4.
(2-1-1) outer case 23
The casing 23 has an intake port 23a at the upper portion and an outlet port 23b at the lower portion. The indoor unit 2 drives the indoor fan 22, sucks in indoor air from the suction port 23a, and blows out air having passed through the indoor heat exchanger 21 from the blow-out port 23b.
(2-1-2) indoor Fan 22
As shown in fig. 4, the indoor fan 22 is disposed in a substantially central portion of the casing 23. The indoor fan 22 is, for example, a cross-flow fan. In the air flow path from the suction port 23a toward the discharge port 23b, the indoor heat exchanger 21 is disposed upstream of the indoor fan 22.
(2-1-3) indoor Heat exchanger 21
The indoor heat exchanger 21 has a plurality of heat transfer fins 21a and a plurality of heat transfer tubes 21b. The indoor air passes between the plurality of heat transfer fins 21a. In addition, at the time of heat exchange, the refrigerant flows in the heat transfer tubes 21b while the air passes between the plurality of heat transfer fins 21a. The plurality of heat transfer tubes 21b are folded back to penetrate the 1 heat transfer fin 21a plurality of times.
The indoor heat exchanger 21 is shaped to open downward so as to cover the upper side of the indoor fan 22 as viewed in the direction in which the heat transfer pipe 21b extends. This shape is referred to herein as a generally Λ shape. The indoor heat exchanger 21 has a 1 st heat exchange portion 21F distant from the wall WL and a 2 nd heat exchange portion 21R close to the wall WL.
A drain pan 26 is disposed below the front lower portion and the rear lower portion of the indoor heat exchanger 21 having the substantially Λ shape. The dew condensation occurring in the 1 st heat exchange unit 21F of the indoor heat exchanger 21 is received by the drain pan 26 disposed at the front lower portion of the indoor heat exchanger 21. The condensation generated in the 2 nd heat exchange unit 21R of the indoor heat exchanger 21 is received by the drain pan 26 disposed at the rear lower portion of the indoor heat exchanger 21.
(2-1-4) horizontal baffle 27
The horizontal baffle 27 and the vertical baffle are disposed in the outlet 23b. The horizontal flap 27 changes the direction of the air blown out from the air outlet 23b vertically. Therefore, the horizontal flap 27 is configured to be capable of changing the angle with the horizontal direction by the motor 27 m.
(2-1-5) air Filter 24
An air filter 24 is disposed downstream of the suction port 23a and upstream of the indoor heat exchanger 21 in the casing 23. The air filter 24 is provided in the casing 23 so that substantially all of the indoor air supplied to the indoor heat exchanger 21 passes through the air filter 24.
Therefore, dust larger than the mesh size of the air filter 24 is removed by the air filter 24, and therefore does not reach the indoor heat exchanger 21. However, dust, oil mist, and the like smaller than the mesh size of the air filter 24 pass through the air filter 24 and reach the indoor heat exchanger 21.
(2-1-6) discharge Unit 29
The discharge cell 29 (see fig. 2) is an active species generating device having a discharge portion therein. The discharge section includes, for example, a needle electrode and a counter electrode, and generates streamer discharge, which is one type of plasma discharge, by applying a high voltage. When an electric discharge occurs, active species having a high oxidative decomposition power are generated. These active species include, for example, high-speed electrons, ions, hydroxyl radicals, and excited oxygen molecules. The active species decompose harmful components and odor components in the air, which are composed of small organic molecules such as ammonia, aldehydes, and nitrogen oxides. The discharge unit 29 is disposed upstream of the air filter 24 or upstream of the indoor heat exchanger 21, for example.
(2-1-7) indoor control section 81
The indoor unit 2 is provided with an indoor control unit 81 as a component of the control unit 8. As shown in fig. 2 and 5, the indoor control board 81 is connected to the motor 22m of the indoor fan 22, the motor 27m of the horizontal flap 27, and the reheat dehumidification valve 28.
The indoor control unit 81 can control the rotation speed of the motor 22m of the indoor fan 22, the rotation angle of the motor 27m of the horizontal flap 27, and the opening and closing of the reheat dehumidification valve 28.
Fig. 6 is a block diagram for explaining the configuration of the control unit 8. In fig. 6, the indoor control unit 81 includes a processor 81a and a memory 81b.
The processor 81a reads the control program for each operation stored in the memory 81b and outputs necessary instructions to each device.
The memory 81b stores control programs for the respective operations, and also stores instruction values from the outdoor control unit 86 as needed.
The processor 81a reads the data or the request value stored in the memory 81b and calculates a necessary control value. The processor 81a further includes a timer 83 therein.
As the processor 81a, a CPU or a GPU is employed. The above description is an example, and is not limited to the above description.
The indoor control unit 81 is connected to the motor 22m of the indoor fan 22, the motor 27m of the horizontal flap 27, and the reheat dehumidification valve 28 shown in fig. 2 and 5, and is also connected to a speaker 82. The indoor control unit 81 is also connected to an outdoor control unit 86 disposed in the outdoor unit 4.
The indoor control unit 81 receives a signal from the remote controller 15 and receives an instruction input from the remote controller 15. The remote controller 15 has a display screen 15a.
The indoor control unit 81 can display various information on the display screen 15a of the remote controller 15. The indoor control unit 81 can notify, for example, that the cleaning operation is not possible using the display screen 15a.
The indoor control unit 81 can also notify, via the speaker 82, that the cleaning operation is not possible.
Fig. 2 and 5 show an indoor temperature sensor 31, an indoor humidity sensor 32, and an indoor heat exchanger temperature sensor 35, among the sensors provided in the indoor unit 2. These sensors are connected to the indoor control unit 81.
The indoor control unit 81 detects the temperature of the air in the room by the indoor temperature sensor 31 and detects the relative humidity of the air in the room by the indoor humidity sensor 32.
The indoor control unit 81 can detect the temperature of the refrigerant flowing through a specific location of the indoor heat exchanger 21 by the indoor heat exchanger temperature sensor 35. The specific location is, for example, a portion of the heat transfer pipe 21b where the indoor heat exchanger temperature sensor 35 is attached.
(2-1-8) reheat dehumidification valve 28
As shown in fig. 5, the indoor heat exchanger 21 has a reheat dehumidification valve 28. The 1 st heat exchange unit 21F and the 2 nd heat exchange unit 21R are connected via a reheat dehumidification valve 28.
The reheat dehumidification valve 28 is fully opened during the cooling operation, the heating operation, and the weak cooling/dehumidification operation, and is closed during the reheat dehumidification to decompress the refrigerant by allowing the refrigerant to flow without performing decompression.
As the valve mechanism, there are 2 types of valve mechanisms, that is, a case where a pressure reducing means is provided inside the valve main body, and a case where a pressure reducing means such as a capillary tube is arranged in parallel with the valve.
(2-2) outdoor unit 4
The outdoor unit 4 functions as a heat source unit that supplies heat energy to the indoor units 2. As shown in fig. 2 and 5, the outdoor unit 4 includes a compressor 41, a four-way valve 42, a gas-liquid separator 43, an outdoor heat exchanger 44, an outdoor expansion valve 45, an outdoor fan 46, and a casing 47.
The compressor 41, the four-way valve 42, the gas-liquid separator 43, the outdoor heat exchanger 44, the outdoor expansion valve 45, and the outdoor fan 46 are housed in a casing 47.
(2-2-1) case 47
The casing 47 has an intake port 47a (see fig. 5) for taking in outdoor air and an outlet port 47b (see fig. 3 and 5) for blowing out heat-exchanged air. The suction port 47a is disposed on the rear side of the housing 47.
(2-2-2) compressor 41
The compressor 41 sucks in a gas refrigerant, compresses the gas refrigerant, and discharges the gas refrigerant. The compressor 41 is, for example, a variable-capacity compressor as follows: the operating capacity can be changed by adjusting the operating frequency of the motor 41m using the inverter. The larger the operating frequency, the larger the operating capacity of the compressor 41.
(2-2-3) four-way valve 42
The four-way valve 42 switches the direction of the flow of the refrigerant in the refrigerant circuit 13. The four-way valve 42 has 4 ports. The 1 st port P1 of the four-way valve 42 is connected to the discharge port of the compressor 41. The 2 nd port P2 of the four-way valve 42 is connected to the 1 st inlet/outlet 44x of the outdoor heat exchanger 44. The 3 rd port P3 of the four-way valve 42 is connected to the gas-liquid separator 43. The 4 th port P4 of the four-way valve 42 is connected to the 2 nd inlet/outlet 21y of the indoor heat exchanger 21.
(2-2-4) gas-liquid separator 43
The gas-liquid separator 43 is connected between the 3 rd port P3 of the four-way valve 42 and the suction port of the compressor 41. In the gas-liquid separator 43, the refrigerant sucked into the compressor 41 is subjected to gas-liquid separation.
(2-2-5) outdoor heat exchanger 44
The outdoor heat exchanger 44 has the 2 nd inlet/outlet 44y connected to the 1 st inlet/outlet 45x of the outdoor expansion valve 45. The outdoor heat exchanger 44 exchanges heat between the refrigerant flowing into the interior from the 1 st inlet/outlet 44x or the 2 nd inlet/outlet 44y and the outdoor air.
(2-2-6) outdoor expansion valve 45
The outdoor expansion valve 45 connects the 2 nd inlet/outlet 45y to the 1 st inlet/outlet 21x of the indoor heat exchanger 21.
(2-2-7) outdoor control section 86
An outdoor control unit 86 constituting the control unit 8 is disposed in the outdoor unit 4. As shown in fig. 6, the outdoor control unit 86 includes a control device 86a, a storage device 86b, and an arithmetic device 86c.
The control device 86a reads the control program stored in the storage device 86b and outputs necessary commands to the respective devices.
The storage device 86b stores the requested values from the indoor control unit 81 as needed, in addition to the control programs.
The arithmetic unit 86c reads the data or the request value stored in the storage unit 86b in accordance with the command from the control unit 86a, and calculates a necessary control value.
The control device 86a and the arithmetic device 86c employ a processor such as a CPU or a GPU. The above description is an example, and is not limited to the above description.
The outdoor control unit 86 is connected to the indoor control unit 81. The outdoor control unit 86 is connected to the motor 41m of the compressor 41, the four-way valve 42, and the motor 46m of the outdoor fan 46.
The outdoor control unit 86 can control the operating frequency of the motor 41m of the compressor 41, the opening degree of the four-way valve 42, and the rotation speed of the motor 46m of the outdoor fan 46.
Fig. 2 and 5 show an outside air temperature sensor 51, a discharge pipe temperature sensor 52, and an outdoor heat exchanger temperature sensor 53, among the sensors provided in the outdoor unit 4. These sensors are connected to the outdoor control unit 86.
The outdoor control unit 86 can detect the temperature of the outdoor air using the outdoor air temperature sensor 51. The control unit 8 can detect the temperature of the refrigerant flowing through the discharge pipe (the refrigerant pipe connected to the discharge port of the compressor 41) by the discharge pipe temperature sensor 52, and can detect the temperature of the refrigerant flowing through a specific location of the outdoor heat exchanger 44 by the outdoor heat exchanger temperature sensor 53.
The outdoor control unit 86 monitors the state of the refrigerant in the refrigerant circuit 13 by the discharge pipe temperature sensor 52, the outdoor heat exchanger temperature sensor 53, the indoor heat exchanger temperature sensor 35, and the like, when controlling the refrigeration cycle.
The refrigerant circuit 13 includes a compressor 41, a four-way valve 42, a gas-liquid separator 43, an outdoor heat exchanger 44, an outdoor expansion valve 45, and an indoor heat exchanger 21. A refrigerant circulates in the refrigerant circuit 13. As the refrigerant, for example, freons such as R32 refrigerant and R410 refrigerant, carbon dioxide, and the like are available.
In the vapor compression refrigeration cycle, the refrigerant is compressed by the compressor 41 to increase the temperature, and then the refrigerant releases heat in the outdoor heat exchanger 44 or the indoor heat exchanger 21. In the vapor compression refrigeration cycle, the refrigerant is decompressed and expanded in the outdoor expansion valve 45, and then absorbs heat in the indoor heat exchanger 21 or the outdoor heat exchanger 44.
(3) Humidifier 106 structure
Fig. 7 is an exploded perspective view showing a configuration example of the humidifier 106 in fig. 1. In fig. 7, the humidifier 106 has a casing 110, a pre-filter 121, a dust collection filter 122, a deodorizing filter 123, a blower fan 130, a humidifying filter unit 140, a water tray 150, and a water tank 160. The housing 110 includes a main body portion 111 and a front panel 112.
Fig. 8 is a perspective view showing the external appearance of the humidifier 106 of fig. 1. In fig. 8, the humidifier 106 has a suction port 113 at the boundary between the front panel 112 and the main body 111. The suction ports 113 are provided at the lower portion and both sides of the front panel 112. The air outlet 114 is provided above the main body 111.
In fig. 7 and 8, when the blower fan 130 is driven, the air in the room sucked in from the suction port 113 is blown out from the blow-out port 114 through the pre-filter 121, the dust collection filter 122, the deodorization filter 123, and the humidification filter unit 140.
An operation panel 115 is provided on the top surface of the main body 111. The operation panel 115 is provided with a plurality of operation buttons.
The pre-filter 121 primarily removes larger dust from the air to be passed through. The dust collecting filter 122 mainly removes fine dust from the air to be passed therethrough. The deodorizing filter 123 contains, for example, activated carbon. The deodorizing filter 123 mainly removes a smelly component from the air to be passed therethrough.
The humidification filter unit 140 has a humidification rotor 141 including a humidification filter 142. The humidification rotor 141 is rotated by a motor 143 (see fig. 2). The humidification filter 142 rotates together with the humidification rotor 141, and receives the supply of the water stored in the water tray 150.
The humidification filter 142 that receives the supply of water supplies moisture to the air to be passed through. When the rotation of the humidification rotor 141 is stopped by stopping the motor 143, the humidification filter unit 140 stops humidification.
The water tray 150 receives a supply of water from the water tank 160, thereby performing replenishment of the water supplied to the humidifying filter 142. The user supplies water to the water tank 160.
As shown in fig. 6, the humidifier control section 89 includes a processor 89a and a memory 89b.
The processor 89a reads the control program stored in the memory 89b and outputs necessary instructions to the respective devices.
The memory 89b stores the requested values from the indoor control unit 81 as needed, in addition to the control programs.
The processor 89a reads the data or the request value stored in the memory 89b and calculates a necessary control value.
As the processor 89a, a processor such as a CPU or a GPU is used. The above description is an example, and is not limited to the above description.
The controller 8 can control the motor 143 via the humidifier controller 89. Therefore, the control unit 8 can turn on the motor 143 to cause the humidifier 106 to perform the humidification operation, and turn off the motor 143 to cause the humidifier 106 to stop the humidification operation.
As shown in fig. 2, the humidifier 106 has an indoor temperature sensor 171, an indoor humidity sensor 172, and a water supply sensor 173. The indoor temperature sensor 171, the indoor humidity sensor 172, and the water supply sensor 173 are connected to the humidifier controller 89.
Therefore, the control unit 8 can detect the temperature and the relative humidity of the indoor air by the indoor temperature sensor 171 and the indoor humidity sensor 172 via the humidifier control unit 89. The control unit 8 of embodiment 1 may use the indoor temperature sensor 31 and the indoor humidity sensor 32 or the indoor temperature sensor 171 and the indoor humidity sensor 172 for the control.
The control unit 8 may use, for example, an average value of the indoor temperature sensors 31 and 171 as the temperature of the indoor air and use both the sensors at the same time. The control unit 8 may use, for example, an average value of the indoor humidity sensors 32 and 172 as the relative humidity of the indoor air, and may use both the sensors at the same time.
(4) Operation of indoor air conditioning system 1
(4-1) Normal operation
The normal operation of the indoor air conditioning system 1 includes, for example, a cooling operation, a heating operation, a dehumidifying operation, an air blowing operation, and an air cleaning operation. Here, the normal operation is an operation other than the washing operation. The normal operation is not limited to the cooling operation and the heating operation described above.
(4-1-1) Cooling operation
Before the cooling operation is started, the cooling operation is instructed to the control unit 8 from the remote controller 15, for example, and the target temperature is instructed. During the cooling operation, the control unit 8 switches the four-way valve 42 to the state shown by the solid line in fig. 5.
During the cooling operation, the four-way valve 42 causes the refrigerant to flow between the 1 st port P1 and the 2 nd port P2, and causes the refrigerant to flow between the 3 rd port P3 and the 4 th port P4. The four-way valve 42 in the cooling operation causes the high-temperature and high-pressure gas refrigerant discharged from the compressor 41 to flow into the outdoor heat exchanger 44.
In the outdoor heat exchanger 44, heat is exchanged between the refrigerant and outdoor air supplied by the outdoor fan 46. The refrigerant that has released heat in the outdoor heat exchanger 44 is decompressed by the outdoor expansion valve 45 and flows into the indoor heat exchanger 21.
In the indoor heat exchanger 21, heat is exchanged between the refrigerant and the indoor air supplied by the indoor fan 22. The refrigerant that absorbs heat by heat exchange in the indoor heat exchanger 21 is drawn into the compressor 41 via the four-way valve 42 and the gas-liquid separator 43.
The indoor air cooled in the indoor heat exchanger 21 is blown out from the indoor unit 2 into the room RM, thereby cooling the room.
In this air conditioner 10, during the cooling operation, the indoor heat exchanger 21 functions as an evaporator of the refrigerant, heats the indoor air in the room RM, and the outdoor heat exchanger 44 functions as a radiator of the refrigerant.
(4-1-2) heating operation
Before the heating operation is started, for example, the remote controller 15 instructs the control unit 8 of the heating operation and the target temperature. During the heating operation, the control unit 8 switches the four-way valve 42 to the state shown by the broken line in fig. 5.
During the heating operation, the four-way valve 42 causes the refrigerant to flow between the 1 st port P1 and the 4 th port P4, and causes the refrigerant to flow between the 2 nd port P2 and the 3 rd port P3. The four-way valve 42 during the heating operation causes the high-temperature and high-pressure gas refrigerant discharged from the compressor 41 to flow into the indoor heat exchanger 21.
In the indoor heat exchanger 21, heat exchange is performed between the refrigerant and the indoor air supplied by the indoor fan 22. The refrigerant that has released heat in the indoor heat exchanger 21 is decompressed by the outdoor expansion valve 45 and flows into the outdoor heat exchanger 44.
In the outdoor heat exchanger 44, heat is exchanged between the refrigerant and the indoor air supplied by the outdoor fan 46. The refrigerant that has absorbed heat by heat exchange in the outdoor heat exchanger 44 is sucked into the compressor 41 via the four-way valve 42 and the gas-liquid separator 43.
The indoor air heated in the indoor heat exchanger 21 is blown out from the indoor unit 2 into the room RM, thereby heating the room.
In this air conditioner 10, during the heating operation, the indoor heat exchanger 21 functions as a radiator for the refrigerant, heats the indoor air in the room RM, and the outdoor heat exchanger 44 functions as an evaporator for the refrigerant.
(4-1-3) dehumidification operation
Before the dehumidification operation is started, the dehumidification operation is instructed to the control unit 8 from the remote controller 15, for example. Here, a case where a plurality of modes can be selected in the dehumidification operation will be described.
Information indicating which of the 1 st dehumidification mode, the 2 nd dehumidification mode and the 3 rd dehumidification mode is selected is transmitted from the remote controller 15 to the control unit 8.
In the 1 st dehumidification mode, a 1 st dehumidification operation is performed in which substantially all of the indoor heat exchanger 21 is set to the evaporation region.
In the 2 nd dehumidification mode, the 2 nd dehumidification operation is performed in which at least a part of the upstream side of the indoor heat exchanger 21 is set to the evaporation region, and the remaining part of the indoor heat exchanger 21 is set to the superheated region.
In the 3 rd dehumidification mode, the 3 rd dehumidification operation is performed in which the portion of the indoor heat exchanger 21 on the upstream side of the reheat dehumidification valve 28 is set as the condensation region, and the portion on the downstream side of the reheat dehumidification valve 28 is set as the evaporation region.
During the dehumidification operation, the control unit 8 switches the four-way valve 42 to the state shown by the solid line in fig. 5.
During the dehumidification operation, the four-way valve 42 causes the refrigerant to flow between the 1 st port P1 and the 2 nd port P2, and causes the refrigerant to flow between the 3 rd port P3 and the 4 th port P4. Therefore, in the refrigerant circuit 13, the direction of the refrigerant flow is the same between the dehumidification operation and the cooling operation. The refrigeration cycle is also performed in the refrigerant circuit 13 in the dehumidification operation.
(4-1-3-1) dehumidification operation 1 st
In the 1 st dehumidification operation, when the refrigerant circulates through the refrigerant circuit 13, the controller 8 fully opens the reheat dehumidification valve 28, and adjusts the operation frequency of the compressor 41 and the opening degree of the outdoor expansion valve 45. In the 1 st dehumidification operation, substantially all of the indoor heat exchanger 21 is set as the evaporation region.
As a result, in the 1 st dehumidification operation, sensible heat capacity, which is the capacity for changing the indoor temperature, is increased.
Here, the substantial entirety of the indoor heat exchanger 21 is set as the evaporation region, and includes not only when the entirety of the indoor heat exchanger 21 is set as the evaporation region, but also when only a portion of the indoor heat exchanger 21 after a portion thereof is removed is set as the evaporation region.
If only this part (for example, a part of 1/3 or less of the entire capacity of the indoor heat exchanger 21) does not become the evaporation region, for example, if the part near the refrigerant outlet of the indoor heat exchanger 21 becomes the superheated region due to the indoor environment or the like, or the like.
(4-1-3-2) dehumidification operation 2
In the 2 nd dehumidification operation, when the refrigerant circulates through the refrigerant circuit 13, the controller 8 fully opens the reheat dehumidification valve 28, and adjusts the operation frequency of the compressor 41 and the opening degree of the outdoor expansion valve 45.
In the 2 nd dehumidification operation, at least a part of the upstream side of the 1 st heat exchange unit 21F is set to the evaporation region, and the remaining part of the 1 st heat exchange unit 21F and the 2 nd heat exchange unit 21R are set to the superheat region.
In the 2 nd dehumidification operation, the controller 8 controls the compressor 41 and the outdoor expansion valve 45 so that the evaporation range becomes equal to or less than a predetermined capacity (for example, 2/3 of the total capacity of the indoor heat exchanger 21).
At this time, the opening degree of the outdoor expansion valve 45 is normally smaller than the opening degree of the outdoor expansion valve 45 in the 1 st dehumidification operation.
Since the 2 nd dehumidification operation has a lower sensible heat capacity than the 1 st dehumidification operation, when the heat load in the room is not high or low, the indoor dehumidification can be performed while suppressing a decrease in the room temperature.
(4-1-3-3) dehumidification operation No. 3 (reheat dehumidification operation)
In the 3 rd dehumidification operation, when the refrigerant circulates through the refrigerant circuit 13, the controller 8 closes the reheat dehumidification valve 28, adjusts the operating frequency of the compressor 41, and fully opens the opening degree of the outdoor expansion valve 45.
In the 3 rd dehumidification operation, the reheat dehumidification valve 28 is closed, and thereby the pressure is reduced.
In the 3 rd dehumidification operation, the 1 st heat exchange unit 21F is set to the condensation region, and the 2 nd heat exchange unit 21R is set to the evaporation region.
In the 3 rd dehumidification operation, the 1 st heat exchange unit 21F functions as a condensation area, and therefore, compared to the 2 nd dehumidification operation, indoor dehumidification can be performed while suppressing a decrease in room temperature.
(4-1-4) air blowing operation
Before the air blowing operation is started, the air blowing operation is instructed to the control unit 8 from, for example, the remote controller 15. During the air blowing operation, the control unit 8 stops the compressor 41 and stops the refrigeration cycle in the refrigerant circuit 13.
During the blowing operation, there are a case where the target air volume is instructed from the remote controller 15 and a case where the indoor unit 2 is automatically selected to the target air volume. The control unit 8 controls the motor 22m of the indoor fan 22 so that the target air volume is achieved.
For example, in the normal operation, the controller 8 is configured to be able to increase the rotation speed in the order of L tap, M tap, and H tap from the LL tap (tap) at which the rotation speed is the smallest.
(4-1-5) air cleaning operation
The indoor air conditioning system 1 of embodiment 1 performs an air cleaning operation using the discharge unit 29. Here, the air cleaning operation is an operation for suppressing harmful components and/or odor components in the air.
The air cleaning operation is an operation for suppressing harmful components and/or odor components by utilizing the decomposition force of streamer discharge, for example.
(4-2) humidifying operation
In the case of this indoor air conditioning system 1, 2 methods are set for the supply of moisture by the humidifier 106. The control unit 8 selects an appropriate operation from the 1 st humidification operation and the 2 nd humidification operation.
The 1 st humidification operation is an operation in which humidification is performed simultaneously with heating. In the 1 st humidification operation, the control unit 8 controls the air conditioner 10 and the humidifier 106 as follows: the heating operation of the air conditioner 10 for the room RM and the humidification operation of the humidifier 106 for the room RM are performed simultaneously.
The 2 nd humidification operation is an operation in which the heating operation in the 1 st humidification operation is stopped and only the humidification operation is performed. In the 2 nd humidification operation, the control unit 8 controls the air conditioner 10 and the humidifier 106 as follows: the room RM is humidified by the humidifying action of the humidifier 106. In the 2 nd humidification operation, the heating operation is not performed, but the air blowing operation by the air conditioner 10 is performed.
(4-3) cleaning operation
The indoor air conditioning system 1 performs a cleaning operation using the humidifier 106. In the indoor air conditioning system 1, the humidifier 106 sucks in the air in the room from the suction port 113, applies moisture to the air in the room, and blows the air out of the room RM from the blow port 114.
The indoor air conditioning system 1 performs the 1 st humidification operation using the air conditioner 10 and the humidifier 106. In the 1 st humidification operation, the control unit 8 causes the air conditioner 10 to perform a heating operation of the room RM and causes the humidifier 106 to humidify the room RM. In the 2 nd humidification operation of the indoor air conditioning system 1, the control unit 8 stops the operation of the air conditioner 10 and humidifies the humidifier 106.
Fig. 9 is a flowchart for explaining the operation of the indoor air conditioning system 1. Next, the cleaning operation will be described along the flowchart of fig. 9. The case of starting the washing operation includes a case where the control unit 8 instructs to start the washing operation (a case of manual start) and a case where the control unit 8 automatically determines the start of the washing operation (a case of automatic start).
The indoor air conditioning system 1 according to embodiment 1 corresponds to both the case of manual start and the case of automatic start. However, the indoor air conditioning system 1 may be configured to correspond to either the manual start or the automatic start.
(step S1)
In step S1, the control unit 8 determines whether or not there is an instruction for the washing operation. When determining that there is an instruction for the washing operation, the control unit 8 proceeds to step S2.
As a case of manual start, for example, a washing operation start button for instructing a washing operation of the remote controller 15 may be pressed.
When determining that there is no instruction for the washing operation, the control unit 8 proceeds to step S11.
(step S2)
In step S2, the controller 8 controls the motor 27m to open the horizontal flap 27 and fix the same at a predetermined angle in order to start the washing operation. The angle of the horizontal baffle 27 is preferably as follows: even if a person is located in the room RM, the air blown out from the indoor unit 2 is not directly blown to the person.
Further, the control section 8 controls the discharge unit 29 to start streamer discharge. In the case where the horizontal shutter 27 has been opened before the process of step S2, this state is maintained. When streamer discharge has been started before the process of step S2, the state in which streamer discharge is being performed is maintained. The streamer discharge ends with the end of the cleaning operation.
When streamer discharge is performed during the cleaning operation, the indoor air conditioning system 1 can purify the indoor heat exchanger 21. However, the indoor air conditioning system 1 may be configured to stop the discharge of the discharge unit 29 and perform the cleaning operation.
(step S3)
In step S3, the control unit 8 determines whether the humidity of the air in the room RM reaches a predetermined value AH1. Not only when the indoor humidity value is equal to the predetermined value AH1, but also when the indoor humidity value exceeds the predetermined value AH1, the control unit 8 determines that the indoor humidity value has reached the predetermined value AH1 (predetermined humidity). Absolute humidity may be used, but relative humidity may also be used instead. When the relative humidity is used instead, the detected value of the relative humidity may be adjusted according to the ambient temperature as necessary.
The control unit 8 detects the temperature in the room by the room temperature sensor 31 and detects the relative humidity in the room by the room humidity sensor 32. When the absolute humidity is used as the humidity, the control unit 8 can calculate the absolute humidity of the air in the room RM from the value MT of the temperature of the air detected by the indoor temperature sensor 31 and the value MRH of the relative humidity of the air detected by the indoor humidity sensor 32.
When determining that the humidity in the room reaches the predetermined value AH1, the control unit 8 proceeds to step S4.
When determining that the indoor humidity has not reached the predetermined value AH1, the control unit 8 proceeds to step S31.
(step S4)
Next, in step S4, the control unit 8 starts the cleaning operation. In the cleaning operation, the air conditioner 10 performs an operation of causing the indoor heat exchanger 21 to function as an evaporator, as in the cooling operation or the dehumidifying operation. In the indoor air conditioning system 1 according to embodiment 1, the control unit 8 controls the air conditioner 10 to perform the same operation as that in the dehumidification operation 1.
From the start of the washing operation, the controller 8 starts counting by the timer 83.
(step S5)
Next, in step S5, the control unit 8 determines whether or not a predetermined time tt2 has elapsed from the start of the cleaning operation. When determining that "the predetermined time tt2 has elapsed since the start of the washing operation", the control unit 8 ends the 1 st dehumidification operation and proceeds to step S6.
When determining that "the predetermined time tt2 has not elapsed since the start of the cleaning operation", the control unit 8 returns to step S4 to continue the cleaning operation.
(step S6)
In step S6, the cleaning operation is ended.
(step S11)
Step S1 to step S6 are main flows of operations. On the other hand, when the control unit 8 determines that there is no instruction for the washing operation in the previous step S1, the control unit 8 determines whether or not a condition for starting the washing operation is satisfied in step S11.
When determining that the "condition for starting the washing operation" is satisfied, the control unit 8 proceeds to step S2. The following "(3-3) transition condition to the cleaning operation" will describe the transition condition to the cleaning operation in step S11.
When determining that the "condition for starting the washing operation" is not satisfied, the control unit 8 returns to step S1.
(step S31)
When the control unit 8 determines in step S3 that the indoor humidity has not reached the predetermined value AH1, the control unit 8 determines in step S31 whether or not the temperature detected by the indoor temperature sensor 31 is equal to or higher than the predetermined temperature T1 so as to select the 1 st humidification operation or the 2 nd humidification operation in accordance with the indoor temperature.
(step S32A)
If the control unit 8 determines in step S31 that the temperature detected by the indoor temperature sensor 31 is not equal to or higher than the predetermined temperature T1, the control unit 8 performs the first humidification operation 1 in step S32A.
(step S32B)
If the control unit 8 determines in step S31 that the temperature detected by the indoor temperature sensor 31 is equal to or higher than the predetermined temperature T1, the control unit 8 performs the 2 nd humidification operation in step S32B.
In both the 1 st humidification operation and the 2 nd humidification operation, humidification by the humidifier 106 is performed. In the humidification operation performed in the 1 st humidification operation and the 2 nd humidification operation, the maximum value of the humidification capacity occurring in the humidification operation in the normal operation is set to be equal to or higher than the maximum value. In the cleaning operation, priority is given to quickly ending the cleaning operation without paying attention to comfort of the room RM.
Therefore, in the cleaning operation, the 1 st humidification operation or the 2 nd humidification operation is performed so that the humidity in the room reaches the predetermined value AH1 as soon as possible, at least the maximum value of the humidification capability occurring in the humidification operation in the normal operation.
For example, when the humidification capacity in the humidification operation in the normal operation is set to L-tap, M-tap, and H-tap in descending order, the H-tap is selected from the 1 st humidification operation and the 2 nd humidification operation.
In the 1 st humidification operation, the control unit 8 controls the humidifier 106 and the air conditioner 10 so that the heating operation is performed simultaneously with the humidification operation. The control unit 8 controls the air conditioner 10 so that the target temperature is set in advance for the cleaning operation.
The heating operation performed by the air conditioner 10 in the washing operation is the same as the operation of the air conditioner 10 in the heating operation in the normal operation, and therefore, the description thereof is omitted here.
(step S33)
Next, regardless of which of the 1 st humidification operation and the 2 nd humidification operation is performed, the control unit 8 determines whether or not a predetermined time tt1 has elapsed from the start of humidification in step S33.
When determining that the predetermined time tt1 has not elapsed, the control unit 8 returns to step S3 to continue the 1 st humidification operation or the 2 nd humidification operation until the humidity in the room reaches the predetermined value AH1.
When determining that the predetermined time tt1 has elapsed, the control unit 8 proceeds to step S34.
(step S34)
When the control unit 8 determines that "the predetermined time tt1 has elapsed" in the previous step S33, the control unit 8 notifies an abnormality in step S34, and returns to step S6.
(Condition for transition to cleaning operation)
In step S11 of fig. 9, the control unit 8 of the indoor air conditioning system 1 automatically determines whether or not to shift to the washing operation.
Fig. 10 is a flowchart showing an example of the operation of the control unit when automatically shifting to the cleaning operation. The processing of the control unit 8 for determining the transition condition of the cleaning operation will be described with reference to fig. 10.
(step S41)
In step S41, the control unit 8 determines whether or not the operation mode is an operation other than the washing operation. When determining that the operation mode is not an operation other than the washing operation (the operation mode is a washing operation), the control unit 8 proceeds to step S48 to reset the accumulated driving time.
When the control unit 8 determines that the operation mode is an operation other than the washing operation, the control unit 8 proceeds to step S42.
(step S42)
Next, in step S42, the control unit 8 determines whether or not the operation mode is an operation other than the cooling operation and the dehumidifying operation. When determining that the indoor air-conditioning system 1 is performing the operation other than the cooling operation and the dehumidifying operation, in other words, when the indoor air-conditioning system 1 is performing the heating operation, the blowing operation, or the air-cleaning operation, the control unit 8 proceeds to step S43.
If it is not determined that the indoor air conditioning system 1 is performing the cooling operation or the operation other than the dehumidification operation, the control unit 8 proceeds to step S421.
(step S43)
In step S43, the control unit 8 counts the driving time of the indoor fan 22.
For example, the processor 81a counts the driving time of the indoor fan 22 using the timer 83. The processor 81a causes the memory 81b to store the counted driving time. The driving time of the indoor fan 22 is counted until the current operation is completed.
For example, even during the heating operation, when the temperature of the room RM reaches the target temperature and the compressor 41, the indoor fan 22, and the like are stopped, the drive time of the indoor fan 22 is not counted.
The count of the driving time of the indoor fan 22 is performed for the 1 st driving time and the 2 nd driving time. The 1 st driving time is a driving time of the indoor fan 22 during the heating operation of the indoor unit 2.
The 2 nd drive time is the drive time of the indoor fan 22 during the humidification operation, the blowing operation, and the air purification operation.
(step S421)
On the other hand, in the case where the control unit 8 did not determine in the previous step S42 that the indoor air conditioning system 1 is "performing the operation other than the cooling operation or the dehumidifying operation", in other words, in the case where the indoor air conditioning system 1 is performing the cooling operation or the dehumidifying operation, in the step S421, it is determined whether or not the operation time of the cooling operation or the dehumidifying operation is equal to or longer than the predetermined time tt 3.
For example, the processor 81a counts the operation time of the cooling operation or the dehumidifying operation by using the timer 83. The processor 81a causes the memory 81b to store the counted operation time.
When the control unit 8 determines that the "operation time of the cooling operation or the dehumidifying operation is equal to or longer than the predetermined time tt 3", the control unit 8 proceeds to step S48 to reset the accumulated driving time of the indoor fan 22. The control unit 8 resets the accumulated drive time when the cooling operation or the dehumidifying operation of the indoor unit 2 in which dew condensation occurs in the indoor heat exchanger 21 is performed.
When the control unit 8 determines that the operation time of the cooling operation and the dehumidifying operation is less than the predetermined time tt3, the control unit 8 does not count the driving time of the indoor fan 22, and the process proceeds to step S44.
(step S44)
In step S44, the control unit 8 determines whether or not the current operation is finished. In other words, the control unit 8 performs the following control: the drive time of the indoor fan 22 when the indoor unit 2 is operated to cause dew condensation in the indoor heat exchanger 21 during the normal operation is not counted as the cumulative drive time.
When the control unit 8 determines that the current operation is ended, the control unit 8 proceeds to step S45.
(step S45)
In step S45, the control unit 8 calculates the cumulative drive time of the indoor fan 22. The control unit 8 accumulates the driving time stored in the memory 81b and calculates the accumulated driving time.
Here, the drive times of the indoor fans 22 in the heating operation, the air blowing operation, and the air cleaning operation are summed up to calculate the cumulative drive time. However, the method of calculating the accumulated driving time is not limited to the method of summing the driving times of the respective operations. For example, the control unit 8 may be configured to calculate the accumulated driving time by weighting according to the type of operation.
(step S46)
In step S46, the control unit 8 determines whether or not the accumulated driving time is equal to or longer than a predetermined driving time CT 1. When the control unit 8 determines that the "accumulated driving time is equal to or longer than the predetermined driving time CT1", the control unit 8 proceeds to step S47.
The determination in step S47 in fig. 10 is an example of the determination in step S11 in fig. 9. Here, if the accumulated drive time is equal to or longer than the predetermined drive time CT1, it is determined that the condition for shifting to the cleaning operation is satisfied.
However, the condition for shifting to the cleaning operation is not limited to the accumulated driving time being equal to or longer than the predetermined driving time CT 1. As the condition for shifting to the cleaning operation, for example, a condition of stopping the normal operation may be added.
When determining that the "accumulated driving time is shorter than the predetermined driving time CT1", the control unit 8 returns to step S41 to repeat the step for accumulating the accumulated driving time.
(step S47)
In step S47, the control unit 8 sets a flag indicating that the condition for transition to the washing operation is satisfied, and stores the flag in the memory 81b.
(step S48)
In step S48, the control unit 8 resets the accumulated driving time.
(step S49)
In step S49, if the indoor air conditioning system 1 is not stopped, the control unit 8 returns to step S41 to repeat the step of accumulating the accumulated driving time.
In the case of the cleaning operation, since steps S41, S48, and S49 are repeated, the cumulative drive time is not counted even if the indoor fan 22 is driven.
(4-4) humidifier control in purge operation
In both the 1 st humidification operation and the 2 nd humidification operation, humidification by the humidifier 106 is performed. The humidification operation performed in the 1 st humidification operation and the 2 nd humidification operation is set to be equal to or greater than the maximum value of the humidification capacity occurring in the humidification operation in the normal operation.
Fig. 11A is an operation flowchart of the humidifier control in the cleaning operation. In fig. 11A, the flow after step S321 shows the control operation of the control unit 8 performed in step S32A and step S32B in fig. 9.
(step S321)
In step S321, the control unit 8 determines whether or not there is a humidification operation start command for the humidifier 106. When the humidification operation start command of the humidifier 106 is issued, the control unit 8 proceeds to step S322.
(step S322)
In step S322, the control unit 8 notifies the user to prompt confirmation of the remaining water amount in the water tank 160.
The purpose of this report is to prompt confirmation of the remaining water amount in the water tank 160 of the humidifier 106 during the cleaning operation of the indoor heat exchanger 21, thereby suppressing water cut-off in the water tank 160 of the humidifier 106 during the cleaning operation and ensuring condensed water (dew condensation water) necessary for cleaning.
As a means of notification, the following means and the like are employed: the control unit 8 displays a message for prompting water supply to the water tank 160 via the display screen 15a of the remote controller 15, or emits a voice message for prompting water supply to the water tank 160 via the speaker 82.
(step S323)
In step S323, the control unit 8 determines whether or not the washing operation start button is on. The control unit 8 waits for the washing operation until the washing operation start button is turned on, which is a response from the user to the notification of step S322. The "washing operation start button" is provided in the remote controller 15, but instead, an instruction to start the washing operation may be given from the communication terminal 230 such as a smartphone.
When determining that the washing operation start button is on, the control unit 8 proceeds to step S324. On the other hand, when determining that the washing operation start button is not on, the control unit 8 stands by for the washing operation.
(step S324)
In step S324, the control unit 8 starts the operation of the humidifier 106. The L-tap, the M-tap, and the H-tap are set in the order from low to high in the humidification capability of the humidifier 106, and the H-tap is selected from the 1 st humidification operation and the 2 nd humidification operation during the purge operation.
(step S325)
In step S325, the control unit 8 determines whether or not there is a command to stop the washing operation. This is because the user may wish to stop the washing operation, and in this case, even during the humidification operation of the washing operation, the user needs to forcibly end the operation.
When there is a stop command for the washing operation, the control unit 8 proceeds to step S6 of fig. 9. The control unit 8 may notify the stop of the washing operation via the communication terminal 230 such as a smartphone or the remote controller 15.
When there is no instruction to stop the washing operation, the control unit 8 proceeds to step S33 in fig. 9.
As described above, in the 1 st humidification operation in step S32A and the 2 nd humidification operation in step S32B in fig. 9, the control in steps S321 to S326 is executed.
(4-5) modification of humidification control
(4-5-1) variation 1 of humidification control
In step S322 of the flowchart of fig. 11A, a notification prompting confirmation of the remaining water amount of the water tank 160 is made, but is not limited thereto.
Fig. 11B is an operation flowchart of the humidifier control in the cleaning operation of the indoor air conditioning system according to modification 1.
In fig. 11B, the difference between fig. 11A and 11B is that step S322 in fig. 11A is replaced with step S322x.
Since other steps are the same as those in fig. 11A, only step S322x will be described here, and the description of other steps will be omitted.
(step S322 x)
In step S322x, the control unit 8 performs notification to prompt water supply to the water tank 160. As described in step S322 of embodiment 1, the notification unit notifies the user via the display screen 15a of the remote controller 15 or the speaker 82.
For example, if the user turns on the washing operation start button without noticing that the water in the water tank 160 is insufficient, the water in the water tank 160 is cut off during the washing operation, and the satisfactory washing operation may not be performed.
Therefore, when the cleaning operation of the indoor heat exchanger 21 is performed, the water supply to the water tank 160 is promoted, whereby the water cut-off of the water tank 160 of the humidifier 106 is suppressed during the cleaning operation, and condensed water (dew condensation water) necessary for the cleaning is secured.
(4-5-2) modification 2 of humidification control
In step S323 of the flowchart of fig. 11A, it is determined whether or not the washing operation start button is on, but the present invention is not limited thereto.
Fig. 11C is an operation flowchart of the humidifier control in the cleaning operation of the indoor air conditioning system according to modification 2.
In fig. 11C, the difference between fig. 11A and 11C is that step S322 of fig. 11A is replaced with step S322y, and step S323 of fig. 11A is replaced with step 323x.
Since other steps are the same as those in fig. 11A, only steps S322y and 323x will be described here, and the description of other steps will be omitted.
(step S322 y)
In step S322y, the control unit 8 performs notification for prompting water supply to the water tank 160 and starts timing.
As described in step S322 of embodiment 1, the notification unit notifies via the display screen 15a of the remote controller 15 or the speaker 82.
The timer 83 of the processor 81a built in the indoor control unit 81 counts time.
(step S323 x)
In step S323x, the control unit 8 determines whether or not a predetermined time has elapsed after the notification of the preceding step 322 y. The timer 83 started in the previous step S322y measures a predetermined time.
The predetermined time can be arbitrarily set, but is initially set to 5 minutes. The 5 minutes is assumed to be a time required for the user to supply water to the water tank 160 after notification of prompting to supply water to the water tank 160.
When 5 minutes has elapsed after the notification to prompt the water supply to the water tank 160, the control unit 8 proceeds to step 324 to start the humidification operation.
As described above, when the cleaning operation of the indoor heat exchanger 21 is performed, the water supply to the water tank 160 is prompted and then the water supply to the water tank 160 by the user is waited for, thereby suppressing the water cut of the water tank 160 during the cleaning operation.
(4-5-3) variation 3 of humidification control
Fig. 12 is an operation flowchart of the humidifier control in the cleaning operation of the indoor air conditioning system according to modification 3. In fig. 12, the flow after step S51 shows the control operation of the control unit 8 performed in step S352A and step S32B of fig. 9.
(step S51)
In step S51, the control unit 8 determines whether or not there is a humidification operation start command for the humidifier 106. When the humidification operation start command of the humidifier 106 is issued, the control unit 8 proceeds to step S52.
(step S52)
In step S52, the control unit 8 detects or estimates the remaining water amount in the water tank 160. When the humidifier 106 has a water amount sensor, the control unit 8 detects the amount of water remaining in the water tank 160 by the water amount sensor.
When the humidifier 106 does not have the water amount sensor, the controller 8 estimates the amount of water remaining in the water tank 160 based on the operation history of the humidifier 106 and the water supply history to the water tank 160.
Specifically, in the humidifier controller 89 of the humidifier 106, the processor 89a counts the humidification operation time after the most recent water supply to the water tank 160, and stores the humidification operation time in the memory 89b.
The processor 89a reads the humidification operation time from the memory 89b, calculates the consumption amount of water in the water tank 160 based on the humidification operation time, and further calculates the remaining water amount in the water tank 160.
After detecting or estimating the amount of water remaining in the water tank 160, the control unit 8 proceeds to step S53.
(step S53)
In step S53, the control unit 8 determines whether or not the remaining water amount in the water tank 160 is less than the 1 st predetermined amount. The control unit 8 proceeds to step S54 when determining that the amount of water remaining in the tank 160 is less than the 1 st predetermined amount, and proceeds to step S57 when determining that the amount of water remaining in the tank 160 is equal to or greater than the 1 st predetermined amount.
(step S54)
In step S54, the control unit 8 issues a notification to prompt the water supply to the water tank 160. As a means for reporting, the following means and the like are employed: the control unit 8 displays a message for prompting water supply to the water tank 160 via the display screen 15a of the remote controller 15, or emits a voice message for prompting water supply to the water tank 160 via the speaker 82.
(step S55)
In step S55, the control unit 8 detects or estimates the remaining water amount in the water tank 160 again. When the humidifier 106 has a water amount sensor, the control unit 8 detects the amount of water remaining in the water tank 160 by the water amount sensor.
When the humidifier 106 does not have a water amount sensor, the controller 8 estimates the amount of water remaining in the water tank 160 by the following method. The humidifier 106 has a switch mechanism that turns on the contacts by the gravity of the water tank 160 to which water is supplied.
Since the on/off signal of the switching mechanism is input to the humidifier control unit 89 of the humidifier 106, the on/off operation of the switching mechanism can be detected by the humidifier control unit 89. Therefore, when there is an operation of switching on/off of the switch mechanism after prompting notification of water supply to the tank 160, it can be estimated that water is supplied to the tank 160 until the water level reaches the full water level (2 nd predetermined amount or more).
After detecting or estimating the amount of water remaining in the water tank 160, the control unit 8 proceeds to step S53.
(step S56)
In step S56, the control unit 8 determines whether or not the remaining water amount in the water tank 160 is equal to or greater than the 2 nd predetermined amount.
The 2 nd predetermined amount is set to a value larger than the 1 st predetermined amount. This is because, when the 2 nd predetermined amount and the 1 st predetermined amount are set to the same value, the determination that the amount is smaller than the value and the value or larger becomes unstable.
The control unit 8 proceeds to step S57 when determining that the amount of water remaining in the tank 160 is equal to or greater than the 2 nd predetermined amount, and returns to step S54 when determining that the amount of water remaining in the tank 160 is less than the 2 nd predetermined amount.
(step S57)
In step S57, the control unit 8 starts the humidification operation by the humidifier 106. The L-tap, M-tap, and H-tap are set in the order of the humidification capacity of the humidifier 106 from low to high, and the H-tap is selected from the 1 st humidification operation and the 2 nd humidification operation during the purge operation.
(step S58)
In step S58, the control unit 8 determines whether or not there is a command to stop the washing operation. This is because the user may wish to stop the washing operation, and in this case, even during the humidification operation in the washing operation, the user needs to forcibly end the operation.
When there is a command to stop the washing operation, the control unit 8 proceeds to step S6 in fig. 9. The control unit 8 may notify the stop of the washing operation via the communication terminal 230 such as a smartphone or the remote controller 15.
When there is no instruction to stop the washing operation, the control unit 8 proceeds to step S33 in fig. 9.
As described above, in the indoor air conditioning system according to modification 3, the controls of step S51 to step S58 are executed in the 1 st humidification operation of step S32A and the 2 nd humidification operation of step S32B in fig. 9.
(4-5-4) modification example 4 of humidification control
When the humidifier 106 includes the water amount sensor, the control unit 8 may start the cleaning operation without confirming the notification of the remaining water amount in the water tank 160 or prompting the notification of water supply to the water tank 160 when determining that the remaining water amount in the water tank 160 is equal to or more than the 2 nd predetermined amount, which is larger than the 1 st predetermined amount.
(5) Features of embodiment 1
(5-1)
In the indoor air conditioning system 1, the control unit 8 includes an indoor control unit 81 that determines to perform the cleaning operation. In the indoor air conditioning system 1, when it is determined to perform the washing operation, the control unit 8 performs at least one of notification to the user via the display screen 15a of the remote controller 15 or the speaker 82 to the effect that the washing operation is performed, notification to prompt confirmation of the remaining water amount in the water tank 160, and notification to prompt supply of water to the water tank 160. As a result, water cut-off of the humidifier is suppressed during the cleaning operation, and condensed water (dew condensation water) necessary for cleaning can be ensured.
(5-2)
In the indoor air conditioning system 1, the humidifier 106 detects or estimates the amount of water remaining in the water tank 160, and when it is determined that the amount of water remaining is equal to or less than the 1 st predetermined amount, it gives the user an instruction to supply water to the water tank 160 via the display screen 15a of the remote controller 15 or the speaker 82.
(5-3)
In the indoor air conditioning system 1, the control unit 8 estimates the remaining water amount in the water tank 160 based on the operation history of the humidifier 106 and the water supply history to the water tank 160 acquired by the humidifier control unit 89, and therefore, a humidifier without a remaining water amount detection means can be used.
(5-4)
In the indoor air conditioning system 1, when a signal for starting the washing operation is input from the remote controller 15 for notification, the control unit 8 starts the washing operation.
(5-5)
In the indoor air conditioning system 1, the control unit 8 can start the cleaning operation when determining that the remaining water amount is equal to or greater than the 2 nd predetermined amount, which is greater than the 1 st predetermined amount.
< embodiment 2 >
In embodiment 1, as shown in fig. 1, the humidifier 106 is configured to be instructed to operate from the indoor control unit 81 of the air conditioner 10 via the wireless LAN router 210 and the wireless LAN adapter 85.
In embodiment 2, a description will be given of a purge operation in a case where the air conditioner 10 is not linked to a humidifier.
It is unclear what humidifier the user uses, and therefore, the humidifier 206 having only the humidifier function is assumed here.
(1) Cleaning operation
Fig. 13 is a flowchart for explaining the operation of the indoor air conditioning system 1 according to embodiment 2. Next, the cleaning operation will be described with reference to the flowchart of fig. 13.
Fig. 13 differs from fig. 9 of embodiment 1 in that steps S31 to S34 in fig. 9 are replaced with steps S131 to S134.
Therefore, the description of steps S1 to S6 is omitted here, and steps S131 to S134 are described.
(step S131)
When the control unit 8 determines in step S3 that the humidity in the room has not reached the predetermined value AH1, the control unit 8 starts a counter and counts the number of times N of notification to promote humidification in step S131.
When the flow proceeds from step S1 to step S131 without notification to prompt humidification at a time, N =0.
(step S132)
Next, in step S132, the control unit 8 determines whether the number N of times the notification to prompt humidification has been made has not reached the predetermined number X. When determining that the reported number of times N has not reached the predetermined number of times X, the control unit 8 proceeds to step S133.
On the other hand, when determining that the reported number N has reached the predetermined number X, the control unit 8 proceeds to step S6 to stop the cleaning operation.
(step S133)
In step S133, the control unit 8 issues a notification prompting humidification via the display screen 15a of the remote controller 15 or the speaker 82.
The notification to prompt humidification includes a notification to prompt "the humidifier 206 is started to perform the humidification operation" and a notification to prompt "the operation to increase the humidification capability of the humidifier 206" is performed.
In the case of embodiment 2, the humidifier 206 is not linked to the air conditioner 10, and therefore the control unit 8 cannot grasp whether or not the humidifier 206 is operating.
Therefore, as a specific notification, it is also possible to notify "the cleaning operation is performed" that the humidifier 206 is stopped, and therefore, the humidifier is used to perform humidification. "such message A.
Note that, assuming that the humidifier 206 is operating but the humidification capability is low, it may be possible to notify "to perform the cleaning operation", and therefore, to increase the humidification capability of the humidifier. "such message B.
Further, assuming that the humidifier 206 is operating but the user has lowered the humidification capability, the user may notify "perform the cleaning operation", and thus request to recover the humidification capability of the humidifier. "such message C.
Further, since it is assumed that the heat exchanger cleaning operation time by cooling is "cleaning operation is performed" and thus, humidification may be performed for the α time. "such message D. The α time is a time required for the cleaning operation.
After the messages a, B, C, and D, it is preferable to perform either notification for prompting confirmation of the remaining water amount in the water tank 160 or notification for prompting supply of water to the water tank 160.
(step S134)
Next, in step S134, the control unit 8 determines whether or not a predetermined time ts1 has elapsed since the notification to promote humidification was made. When determining that the predetermined time ts1 has elapsed, the control unit 8 returns to step S3.
Here, the user waits for the elapse of the predetermined time ts1 due to the notification that the user expects to perform the humidification operation using the humidifier 206. Then, the process returns to step S3 to determine whether or not the humidification operation is actually performed.
As described above, the control unit 8 repeats the process of prompting the humidification notification N times and waiting for the elapse of the predetermined time ts1, and when the humidity in the room does not reach the predetermined value AH1, the control unit 8 estimates that the humidifier 206 is in a stopped state and stops the cleaning operation.
The control unit 8 may notify the stop of the washing operation via the communication terminal 230 such as a smartphone or the remote controller 15.
(2) Features of embodiment 2
(2-1)
In the indoor air conditioning system 1, the control unit 8 includes an indoor control unit 81 that determines to perform the cleaning operation. In the indoor air conditioning system 1, when it is determined to perform the washing operation, the control unit 8 performs at least one of notification to the user via the display screen 15a of the remote controller 15 or the speaker 82 to the effect that the washing operation is performed, notification to prompt confirmation of the remaining water amount in the water tank 160, and notification to prompt supply of water to the water tank 160. As a result, water cut-off of the humidifier is suppressed during the cleaning operation, and condensed water (dew condensation water) necessary for cleaning can be ensured.
(2-2)
In the indoor air conditioning system 1, when a signal for starting the washing operation is input from the remote controller 15, the control unit 8 starts the washing operation.
< other embodiment >
The following operations are assumed for the cleaning operations described in embodiment 1 and embodiment 2: the indoor heat exchanger 21 is caused to function as an evaporator, and moisture contained in the indoor air is condensed in the indoor heat exchanger 21 to wash out dirt adhering to the surface of the indoor heat exchanger 21.
However, the cleaning operation includes, but is not limited to: the freezing operation is performed so that the surface temperature of the indoor heat exchanger 21 becomes the freezing point or lower, and after the freezing operation is completed, the indoor heat exchanger is defrosted and cleaned.
Although the embodiments of the present disclosure have been described above, it is understood that various changes in the form and details may be made therein without departing from the spirit and scope of the present disclosure as set forth in the appended claims.
Description of the reference symbols
1 indoor air conditioning system
2 indoor machine (indoor machine of air-conditioner)
8 control part
15 remote controller (operation part)
15a display screen (informing part)
21 indoor heat exchanger
81 indoor control part 81 (implementation determination part)
82 loudspeaker (informing part)
89 humidifier control part (History acquisition part)
106 humidifier
160 water tank
206 humidifier
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2010-014288
Claims (8)
1. An indoor air conditioning system (1) having:
an air conditioning indoor unit (2) that performs a cleaning operation in which an indoor heat exchanger (21) is caused to function as an evaporator, moisture contained in indoor air is condensed at the indoor heat exchanger (21), and the indoor heat exchanger (21) is cleaned;
a humidifier (106) which has a water tank (160) for storing water for humidification and humidifies the interior of the room;
a control unit (8); and
a notification part (82),
the control unit (8) has an execution determination unit (81) for determining execution of the cleaning operation,
when it is determined that the washing operation is to be performed, the control unit (8) notifies a user of the water stored in the water tank (160) via the notification unit (82).
2. Indoor air conditioning system (1) according to claim 1,
when it is determined that the cleaning operation is to be performed, the control unit (8) issues a notification to a user via the notification unit (82) to prompt confirmation of the remaining water amount in the water tank (160).
3. Indoor air conditioning system (1) according to claim 1,
when it is determined that the washing operation is to be performed, the control unit (8) issues an instruction to a user to supply water to the water tank (160) via the notification unit (82).
4. An indoor air conditioning system (1) according to any one of claims 1 to 3,
the humidifier (106) detects or estimates the amount of water remaining in the water tank, and when it is determined that the amount of water remaining is equal to or less than a 1 st predetermined amount, notifies a user of urging water supply to the water tank (160) via the notification unit (82).
5. Indoor air conditioning system (1) according to claim 4,
the control unit (8) further comprises a history acquisition unit (89) that acquires the operation history of the humidifier (106) and the water supply history to the water tank (160),
the control unit (8) estimates the amount of residual water based on the operating time of the humidifier (106) that has elapsed since the water was supplied to the water tank (160).
6. An indoor air conditioning system (1) according to any one of claims 2 to 5,
the control unit (8) waits for the cleaning operation until a response to the notification is made.
7. Indoor air conditioning system (1) according to claim 6,
the indoor air conditioning system (1) further comprises an operation unit (15), wherein the operation unit (15) can input an instruction to start the washing operation,
when a signal for starting the cleaning operation is input from the operation unit (15) to the notification, the control unit (8) starts the cleaning operation.
8. Indoor air conditioning system (1) according to claim 4,
when the remaining water amount is determined to be not less than the 2 nd predetermined amount larger than the 1 st predetermined amount after the notification of the water supply is prompted, the control unit (8) starts the cleaning operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-144802 | 2020-08-28 | ||
| JP2020144802A JP7116335B2 (en) | 2020-08-28 | 2020-08-28 | indoor air conditioning system |
| PCT/JP2021/024525 WO2022044530A1 (en) | 2020-08-28 | 2021-06-29 | Indoor air conditioning system |
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| CN115968434A true CN115968434A (en) | 2023-04-14 |
| CN115968434B CN115968434B (en) | 2024-01-30 |
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| JP (1) | JP7116335B2 (en) |
| CN (1) | CN115968434B (en) |
| WO (1) | WO2022044530A1 (en) |
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| JP2022039665A (en) | 2022-03-10 |
| WO2022044530A1 (en) | 2022-03-03 |
| CN115968434B (en) | 2024-01-30 |
| JP7116335B2 (en) | 2022-08-10 |
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