CN117693652A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN117693652A CN117693652A CN202280051523.1A CN202280051523A CN117693652A CN 117693652 A CN117693652 A CN 117693652A CN 202280051523 A CN202280051523 A CN 202280051523A CN 117693652 A CN117693652 A CN 117693652A
- Authority
- CN
- China
- Prior art keywords
- air
- indoor
- unit
- filter
- outdoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims abstract description 95
- 238000004140 cleaning Methods 0.000 claims abstract description 85
- 239000000428 dust Substances 0.000 claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 238000004378 air conditioning Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 26
- 238000005057 refrigeration Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000005494 condensation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- 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
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
-
- 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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
Abstract
The air conditioner (1) comprises an indoor unit (30), a ventilation device (20) and a control unit (C), wherein the indoor unit (30) adjusts the temperature of indoor air, the ventilation device (20) discharges the indoor air, and the control unit (C) controls the actions of the indoor unit (30) and the ventilation device (20). The indoor unit (30) has a filter (33) and filter cleaning means (60, 70), the filter (33) removes dust from the air taken from the room, and the filter cleaning means (60, 70) removes dust adhering to the filter (33). In the indoor unit (30), a ventilation port (2 a) communicating with the ventilator (20) is arranged on the downstream side of the filter (33) in the inner air flow direction. When the filter cleaning mechanisms (60, 70) are operated, the control unit (C) causes the ventilation device (20) to perform ventilation or air supply.
Description
Technical Field
The present disclosure relates to an air conditioning apparatus.
Background
In an indoor unit of a conventional air conditioner, dust contained in sucked indoor air is attached to a filter and captured, and the dust attached to the filter is automatically removed by a filter cleaning mechanism.
Patent document 1 describes that dust collected by a filter cleaning mechanism is discharged outside a room by a ventilator.
Prior art literature
Patent literature
Patent document 1: japanese laid-open patent publication No. 2007-205656
Disclosure of Invention
Technical problem to be solved by the invention
However, in the conventional air conditioner having the filter cleaning mechanism, dust remains on the filter even after cleaning, and dust released from the filter adheres to the heat exchanger or the like.
The purpose of the present disclosure is to: provided is an air conditioner which has excellent dust removal efficiency by a filter cleaning operation.
Technical solution for solving the technical problems
A first aspect of the present disclosure is an air conditioner including an indoor unit 30, a ventilator 20, and a control unit C, wherein the indoor unit 30 adjusts a temperature of air in a room, the ventilator 20 discharges the air in the room, and the control unit C controls operations of the indoor unit 30 and the ventilator 20. The indoor unit 30 includes a filter 33 and filter cleaning means 60 and 70, the filter 33 removes dust from air taken from the room, the filter cleaning means 60 and 70 remove the dust adhering to the filter 33, and a ventilation port 2a communicating with the ventilator 20 is provided on a downstream side of the filter 33 in an air flow direction in the indoor unit 30. When the filter cleaning mechanisms 60 and 70 are operated, the control unit C causes the ventilator 20 to perform exhaust air or supply air.
In the first aspect, by exhausting air during the filter cleaning operation, dust released from the filter 33 can be discharged to the outside. Further, by supplying air during the filter cleaning operation, the inside of the indoor unit 30 can be kept at a positive pressure, and dust adhering to the surface of the filter 33 can be suppressed from moving to the back surface side where cleaning is difficult. Therefore, the dust removal efficiency can be improved.
In the second aspect of the present disclosure, in addition to the first aspect, the ventilator 20 is configured to be capable of both air supply and air discharge, and when the filter cleaning mechanisms 60 and 70 are operated, the control unit C causes the ventilator 20 to perform air discharge when the humidity of outdoor air, which is outside the room, is higher than the humidity of indoor air, and causes the ventilator 20 to perform air supply when the humidity of outdoor air is lower than the humidity of indoor air.
In the second aspect, the filter cleaning operation can be performed while introducing air having a low humidity in the indoor air and the outdoor air into the indoor unit 30. Therefore, dust released from the filter 33 can be prevented from adhering to the inside of the indoor unit 30 such as the heat exchanger 34 due to moisture, and mold generation and the like can be prevented.
In a third aspect of the present disclosure, in addition to the first or second aspect, when the ventilator 20 is to be exhausted when the filter cleaning mechanism 60, 70 is in operation, the control unit C makes the exhaust air volume of the ventilator 20 larger than the exhaust air volume of the ventilator 20 when the filter cleaning mechanism 60, 70 is not in operation.
In the third aspect, since the air volume is made larger than that in the normal air discharge during the filter cleaning operation to discharge the dust released from the filter 33 to the outside of the indoor unit 30 more reliably, the dust removal efficiency is further improved.
In the fourth aspect of the present disclosure, in addition to any one of the first to third aspects, a blowout air guide plate 37 is provided at the air outlet 31b of the indoor unit 30, and the control unit C closes the blowout air guide plate 37 when the ventilator 20 supplies air during operation of the filter cleaning mechanisms 60, 70.
In the fourth aspect, since the inside of the indoor unit 30 can be kept at a higher pressure by supplying air during the filter cleaning operation, the dust adhering to the surface of the filter 33 can be further suppressed from moving to the back surface side where cleaning is difficult. Therefore, the dust removal efficiency can be further improved.
Drawings
Fig. 1 is a diagram showing an example of the overall configuration of an air conditioner according to an embodiment;
fig. 2 is a diagram illustrating a refrigerant circuit and an air flow path of the air conditioner shown in fig. 1;
fig. 3 is a cross-sectional view showing an example of the structure of an indoor unit of the air conditioner shown in fig. 1;
fig. 4 is a cross-sectional view showing another example of the structure of an indoor unit of the air conditioner shown in fig. 1;
fig. 5 is a block diagram showing the structure of a control part of the air conditioner shown in fig. 1;
fig. 6 is a flowchart showing an example of the filter cleaning operation of the air conditioner shown in fig. 1.
Detailed Description
(embodiment)
Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The present disclosure is not limited to the embodiments described below, and various modifications may be made without departing from the technical spirit of the present disclosure. The drawings are intended to schematically illustrate the present disclosure, and therefore, the size, proportion, or number may be exaggerated or simplified as needed for easy understanding.
(1) Outline of structure of air conditioner
The air conditioner 1 adjusts the temperature and humidity of air in the target space. The object space of this example is an indoor space I. As shown in fig. 1, the air conditioner 1 includes an outdoor unit 10 and an indoor unit 30. The outdoor unit 10 is installed outdoors, and the indoor unit 30 is installed indoors. The air conditioner 1 is a one-to-one air conditioner having one indoor unit 30 and one outdoor unit 10. The air conditioner 1 includes a ventilation device (hereinafter referred to as a humidification ventilation unit) 20 having a humidification function. The air conditioner 1 has a function of ventilating the indoor space I. The air conditioner 1 also has a function of humidifying air.
As shown in fig. 1 and 2, the air conditioner 1 includes a hose 2, a liquid connection pipe 3, and a gas connection pipe 4.
The indoor unit 30 and the humidification ventilation unit 20 are connected to each other through a hose 2. An extension portion 2b is connected to one end side of the hose 2, and the extension portion 2b terminates in a ventilation port (hereinafter referred to as an indoor ventilation port) 2a inside the indoor unit 30 (see fig. 2). When the humidification ventilation unit 20 performs ventilation, the indoor ventilation port 2a serves as an inlet port into which indoor air flows. When the humidification ventilation unit 20 supplies air, the indoor ventilation port 2a serves as an outflow port from which air outside the room flows out.
The indoor unit 30 and the outdoor unit 10 are connected to each other through a liquid connection pipe 3 and a gas connection pipe 4. Thereby, the refrigerant circuit R is constituted. The refrigerant circuit R is filled with a refrigerant. The refrigerant is not particularly limited, and may be difluoromethane, for example. The refrigerant circuit R performs a vapor compression refrigeration cycle.
The refrigerant circuit R mainly includes a compressor 12, an outdoor heat exchanger 14, an expansion valve 15, a four-way reversing valve 16, and an indoor heat exchanger 34.
The refrigerant circuit R performs a first refrigeration cycle and a second refrigeration cycle according to switching of the four-way selector valve 16. The first refrigeration cycle is a refrigeration cycle in which the indoor heat exchanger 34 functions as an evaporator and the outdoor heat exchanger 14 functions as a radiator. The second refrigeration cycle is a refrigeration cycle in which the outdoor heat exchanger 14 functions as a radiator and the indoor heat exchanger 34 functions as an evaporator.
(2) Detailed structure
(2-1) outdoor unit
As shown in fig. 1 and 2, the outdoor unit 10 includes an outdoor unit casing 11, a compressor 12, an outdoor fan 13, an outdoor heat exchanger 14, an expansion valve 15, and a four-way reversing valve 16.
The outdoor unit casing 11 houses a compressor 12, an outdoor fan 13, an outdoor heat exchanger 14, an expansion valve 15, and a four-way selector valve 16. The outdoor unit casing 11 has an outdoor suction port 11a and an outdoor discharge port 11b. The outdoor suction port 11a is formed at the rear side of the outdoor unit casing 11. The outdoor suction port 11a is an opening for sucking outdoor air. The outdoor outlet 11b is formed at the front side of the outdoor unit casing 11. The outdoor outlet 11b is an opening for blowing out the air having passed through the outdoor heat exchanger 14. An outdoor air passage 11c is formed in the outdoor unit casing 11 from the outdoor suction port 11a to the outdoor discharge port 11b.
The compressor 12 sucks in a low-pressure gas refrigerant and compresses it. The compressor 12 is driven by a first motor M1. The compressor 12 is a variable capacity compressor that supplies power from the dc-ac conversion circuit to the first motor M1. The compressor 12 is configured to: by adjusting the operating frequency (rotational speed) of the first motor M1, the operating capacity can be changed.
The outdoor fan 13 is disposed in the outdoor air passage 11c. The outdoor fan 13 is rotated by the second motor M2. The air sent by the outdoor fan 13 is sucked into the outdoor unit casing 11 from the outdoor suction port 11 a. The air flows through the outdoor air passage 11c, and is blown out of the outdoor unit casing 11 from the outdoor outlet 11b. The outdoor fan 13 delivers outdoor air in such a manner that the air passes through the outdoor heat exchanger 14.
The outdoor heat exchanger 14 is disposed on the upstream side of the outdoor fan 13 in the outdoor air passage 11c. The outdoor heat exchanger 14 of the present example is a fin-and-tube heat exchanger. The outdoor heat exchanger 14 is an example of a heat source heat exchanger. The outdoor heat exchanger 14 exchanges heat between the refrigerant flowing therein and the outdoor air sent by the outdoor fan 13.
The expansion valve 15 is an example of a pressure reducing mechanism. The expansion valve 15 decompresses the refrigerant. The expansion valve 15 is an electric expansion valve whose opening degree can be adjusted. The pressure reducing mechanism may be a temperature-sensitive expansion valve, an expander, a capillary tube, or the like. The expansion valve 15 may be provided in the indoor unit 30 as long as it is connected to the liquid line of the refrigerant circuit R.
The four-way selector valve 16 is an example of a flow path switching mechanism. The four-way selector valve 16 has a first port P1, a second port P2, a third port P3, and a fourth port P4. The first port P1 is connected to a discharge portion of the compressor 12. The second port P2 is connected to a suction portion of the compressor 12. The third valve P3 is connected to the gas end of the outdoor heat exchanger 14. The fourth valve port P4 is connected to the gas connection pipe 4.
The four-way selector valve 16 is switched between a first state (the state shown by the solid line in fig. 2) and a second state (the state shown by the broken line in fig. 2). The four-way selector valve 16 in the first state communicates the first port P1 with the third port P3, and communicates the second port P2 with the fourth port P4. The four-way selector valve 16 in the second state communicates the first port P1 with the fourth port P4, and communicates the second port P2 with the third port P3.
(2-2) humidification ventilation unit
The humidification ventilation unit 20 is provided outdoors. The humidifying/ventilating unit 20 of the present embodiment is integrated with the outdoor unit 10. The humidification ventilation unit 20 transmits moisture in the outdoor air to the indoor unit 30. The humidification ventilation unit 20 includes a humidification ventilation housing 21, a humidification rotor 22, a first fan 23, a switching damper 24, a heater 25, and a second fan 26.
The humidification ventilation housing 21 is integrally mounted on the outdoor unit casing 11. The humidification ventilation housing 21 houses a humidification rotor 22, a first fan 23, a switching damper 24, a heater 25, and a second fan 26. The humidification ventilation housing 21 is formed with a humidification intake port 21a, a humidification exhaust port 21b, and an intake exhaust port 21c. The humidification intake port 21a and the intake/exhaust port 21c are formed on the rear side of the humidification ventilation housing 21, for example. The humidification exhaust port 21b is formed on the front side of the humidification ventilation housing 21, for example.
The humidification intake port 21a is an opening for sucking air outside. The humidification exhaust port 21b is an opening for exhausting air that has been given moisture to the humidification rotor 22. The intake and exhaust port 21c is an opening for sucking air outside or exhausting air sent from the room. A first passage 27 extending from the humidification intake port 21a to the humidification exhaust port 21b is formed in the humidification ventilation housing 21. A second passage 28 extending from the intake/exhaust port 21c to the connection port 21d is formed in the humidification ventilation housing 21. The hose 2 is connected to the connection port 21 d.
Humidification rotor 22 is disposed across first and second passages 27, 28. The humidifying rotor 22 is an adsorption member that adsorbs moisture in the air. The humidifying rotor 22 is, for example, a disk-shaped humidifying rotor having a honeycomb structure. The humidifying rotor 22 holds an adsorbent such as silica gel, zeolite, alumina, or the like. The adsorbent has a property of adsorbing moisture in the air. The moisture absorbent has a property of desorbing adsorbed moisture by heating.
The humidifying rotor 22 is rotated by the third motor M3. The humidifying rotor 22 has a moisture absorption region 22A that absorbs moisture in the air and a moisture release region 22B that releases the moisture into the air. The moisture absorption region 22A is constituted by a portion of the humidifying rotor 22 located in the first passage 27. The humidification area 22B is constituted by a portion of the humidification rotor 22 located in the second passage 28.
The first fan 23 is disposed in the first passage 27. The first fan 23 is rotated by the fourth motor M4. The first fan 23 is configured to: by adjusting the rotation speed of the fourth motor M4, the air volume can be switched to multiple stages. The air sent by the first fan 23 is sucked into the humidification ventilation housing 21 from the humidification intake port 21 a. The air flows through the first passage 27 and is discharged from the humidification exhaust port 21b to the outside of the humidification ventilation housing 21. The first fan 23 delivers outdoor air in such a manner that the air passes through the moisture absorption region 22A of the humidifying rotor 22. Moisture contained in the air outside the room flowing through the first passage 27 is adsorbed by the moisture absorption region 22A of the humidifying rotor 22.
The switching damper 24 is disposed in the second passage 28. The switching damper 24 has a first inlet and outlet 24a and a second inlet and outlet 24b. The first inlet/outlet 24a communicates with the intake/exhaust port 21c. The second port 24b communicates with a connection port 21d connected to the hose 2 in the humidification ventilation housing 21. The switching damper 24 switches between the first state and the second state. The switching damper 24 in the first state has an inlet for intake air as a first inlet and outlet 24a and an outlet for exhaust air as a second inlet and outlet 24b. The second switching damper 24 has an inlet for intake air as a second inlet 24b and an outlet for exhaust air as a first inlet 24a. The state of the switching damper 24 is switched by the drive of the fifth motor M5.
The heater 25 is disposed between the intake exhaust port 21c and the switching damper 24 in the second passage 28. The heater 25 heats the air flowing through the second passage 28. The heater 25 is configured to be variable in output. The temperature of the air passing through the heater 25 varies according to the output of the heater 25.
The second fan 26 is disposed between the first inlet and outlet 24a and the second inlet and outlet 24b of the switching damper 24. The second fan 26 is rotated by the sixth motor M6. The second fan 26 is configured to: by adjusting the rotation speed of the sixth motor M6, the air volume can be switched to multiple stages. The flow of air delivered by the second fan 26 varies according to the state of the switching damper 24. Specifically, when the switching damper 24 is in the first state, the air sucked from the first inlet 24a flows out to the second inlet 24b as indicated by solid arrows in fig. 2. In this case, the humidification ventilation unit 20 supplies air from the indoor ventilation port 2a to the indoor space I through the hose 2. When the switching damper 24 is in the second state, the air sucked from the second inlet/outlet 24b flows out to the first inlet/outlet 24a as indicated by a broken-line arrow in fig. 2. In this case, the humidification ventilation unit 20 discharges the air in the indoor space I from the indoor ventilation port 2a through the hose 2.
(2-3) indoor unit
As shown in fig. 1 to 3, the indoor unit 30 is provided indoors. The indoor unit 30 is a wall-mounted indoor unit provided on a wall WL of a room forming an indoor space I. The indoor unit 30 includes an indoor unit casing 31, an indoor fan 32, a filter 33, an indoor heat exchanger 34, a water pan 35, a wind direction adjusting unit 36, and a filter cleaning mechanism 60.
The indoor unit casing 31 houses the indoor fan 32, the filter 33, the indoor heat exchanger 34, the drain pan 35, and the filter cleaning mechanism 60. The indoor housing 31 has an indoor suction port 31a and an indoor discharge port 31b. The indoor suction port 31a is disposed at an upper side of the indoor housing 31. The indoor suction port 31a is an opening for sucking in indoor air. The indoor blowing port 31b is disposed at the lower side of the indoor housing 31. The indoor air outlet 31b is an opening for blowing out the heat exchanged air or the air for ventilation and air supply or for humidification. An indoor air passage 31c extending from the indoor suction port 31a to the indoor discharge port 31b is provided in the indoor casing 31.
The indoor fan 32 is disposed at a substantially central portion of the indoor air path 31c. The indoor fan 32 is an example of a blower. The indoor fan 32 is, for example, a cross flow fan. The indoor fan 32 is rotated by a seventh motor M7 (refer to fig. 2). The indoor fan 32 takes in and sends the indoor air into the indoor air passage 31c. The air sent by the indoor fan 32 is sucked into the indoor housing 31 from the indoor suction port 31 a. The air flows through the indoor air passage 31c and is blown out of the indoor housing 31 from the indoor air outlet 31b.
The indoor fan 32 delivers indoor air in such a manner that the air passes through the indoor heat exchanger 34. The air blown out from the indoor air outlet 31b is supplied to the indoor space. The indoor fan 32 is configured to: by adjusting the rotation speed of the seventh motor M7, the air volume can be switched to multiple stages.
The filter 33 is disposed on the upstream side of the indoor heat exchanger 34 in the indoor air passage 31c. The filter 33 is attached to the indoor unit casing 31 so that substantially all of the air supplied to the indoor heat exchanger 34 passes therethrough. The filter 33 captures dust in the air sucked from the indoor suction port 31 a.
The indoor heat exchanger 34 is disposed on the upstream side of the indoor fan 32 in the indoor air path 31c. The indoor heat exchanger 34 of this example is a fin-and-tube heat exchanger. The indoor heat exchanger 34 is an example of a heat exchanger used. The indoor heat exchanger 34 exchanges heat between the refrigerant therein and the indoor air sent by the indoor fan 32.
The indoor ventilation port 2a is disposed in the indoor air passage 31c on the downstream side of the filter 33 and on the upstream side of the indoor heat exchanger 34. In other words, the indoor heat exchanger 34 is disposed on the downstream side of the indoor transfer port 2a in the indoor air passage 31c. The distance between the indoor heat exchanger 34 and the indoor ventilation port 2a may be, for example, about 100mm or less.
The drip tray 35 is disposed at the front lower side and the rear lower side of the indoor heat exchanger 34. The water pan 35 receives dew condensation water generated inside the indoor unit 31 of the indoor unit 30. Dew water generated at the surface of the fin of the indoor heat exchanger 34 flows down along the surface thereof by its own weight and is received by the water receiving tray 35.
The wind direction adjusting unit 36 adjusts the wind direction of the air blown out from the indoor air outlet 31b. The wind direction adjusting unit 36 has a blowout air deflector 37. The air outlet guide 37 is formed in a long plate shape extending in the longitudinal direction of the indoor air outlet 31b. The blowout air deflector 37 is rotated by the motor. The blowout air deflector 37 opens and closes the indoor blowout port 31b as it rotates.
The blowout air deflector 37 is configured to be capable of changing the inclination angle stepwise. The positions at which the blowout preventer 37 is adjusted in this example include six positions. The six positions include a closed position and five open positions. The five open positions include a generally horizontal blowout position shown in fig. 3. The blowout air deflector 37 in the closed position substantially closes the indoor blowout port 31b. A gap may be formed between the air outlet guide 37 in the closed position and the indoor air outlet 31b.
The filter cleaning mechanism 60 removes dust adhering to the filter 33. The filter cleaning mechanism 60 is configured to be movable with respect to the filter 33. The filter cleaning mechanism 60 includes a cleaning portion 61 and a dust box 62, wherein the cleaning portion 61 removes dust adhering to the filter 33 by a brush or the like, and the dust box 62 accommodates the dust removed from the filter 33 by the cleaning portion 61. That is, the filter cleaning mechanism 60 shown in fig. 3 is a dust box moving mechanism that moves together with the dust box 62 on the filter 33. The dust collected by the dust box 62 may be taken out of the indoor unit 30 by a dust discharge mechanism 63 provided below the filter 33.
Instead of the dust box movable filter cleaning mechanism 60 shown in fig. 3, a filter movable filter cleaning mechanism 70 shown in fig. 4 may be provided. In fig. 4, the same components as those of the indoor unit 30 shown in fig. 3 are denoted by the same reference numerals.
The filter cleaning mechanism 70 cleans the filter 33 by moving the filter 33 relative to the filter cleaning mechanism 70. The filter cleaning mechanism 70 includes a driving unit 71 and a cleaning unit 72, wherein the driving unit 71 winds the filter 33 with a pulley or the like, and the cleaning unit 72 removes dust adhering to the filter 33 with a brush or the like. The dust removed from the filter 33 by the cleaning portion 72 can be collected in the dust discharge mechanism 73 provided below the filter 33, and can be taken out of the indoor unit 30 through the dust discharge mechanism 73.
(2-4) remote controller
As shown in fig. 1, the remote controller 40 is disposed at a position that can be operated by a user indoors. As shown in fig. 1 and 2, the remote controller 40 has a display 41 and an input 42. The display unit 41 displays predetermined information. The display unit 41 is constituted by a liquid crystal display, for example. The predetermined information is information indicating an operation state, a set temperature, and the like of the air conditioner 1. The input unit 42 receives an input operation by the user for various settings. The input unit 42 is constituted by a plurality of physical switches, for example. The user can set the operation mode, target temperature, target humidity, and the like of the air conditioner 1 by operating the input unit 42 of the remote controller 40.
(2-5) sensor
As shown in fig. 2, the air conditioner 1 has a plurality of sensors. The plurality of sensors includes a refrigerant sensor and an air sensor. The refrigerant sensor includes a sensor for detecting the temperature and pressure of the high-pressure refrigerant and a sensor (not shown) for detecting the temperature and pressure of the low-pressure refrigerant.
The air sensors include an outdoor air temperature sensor 51, an outdoor air humidity sensor 52, an indoor air temperature sensor 53, and an indoor air humidity sensor 54. The outdoor air temperature sensor 51 is provided in the outdoor unit 10. The outdoor air temperature sensor 51 detects the temperature of the outdoor air. An outdoor air humidity sensor 52 is provided in the humidification ventilation unit 20. The outdoor air humidity sensor 52 detects the humidity of the outdoor air. The outdoor air humidity sensor 52 of the present example detects the absolute humidity of the outdoor air, but may also detect the relative humidity. An indoor air temperature sensor 53 and an indoor air humidity sensor 54 are provided in the indoor unit 30. The indoor air temperature sensor 53 detects the temperature of the indoor air. The indoor air humidity sensor 54 detects the humidity of the indoor air. The indoor air humidity sensor 54 detects the absolute humidity of the indoor air, but may also detect the relative humidity.
(2-6) control portion
As shown in fig. 5, the air conditioner 1 includes a control unit C. The control unit C controls the operation of the refrigerant circuit R. The control unit C controls the operations of the outdoor unit 10, the humidification ventilation unit 20, and the indoor unit 30. As shown in fig. 2 and 5, the control section C includes an outdoor control section OC and an indoor control section IC. The outdoor control unit OC is provided in the outdoor unit 10. The indoor control IC is provided in the indoor unit 30. The indoor control IC and the outdoor control OC each include an MCU (Micro Control Unit ), an electric circuit, and an electronic circuit. The MCU includes a CPU (Central Processing Unit ), a memory, and a communication interface. Various programs for execution by the CPU are stored in the memory.
The detection value of the outdoor air temperature sensor 51 and the detection value of the outdoor air humidity sensor 52 are input to the outdoor control part OC.
The outdoor control unit OC is connected to the compressor 12, the outdoor fan 13, the expansion valve 15, and the four-way selector valve 16. The outdoor control unit OC outputs control signals for executing and stopping the operation of the outdoor unit 10 to the compressor 12, the outdoor fan 13, the expansion valve 15, and the four-way selector valve 16. The outdoor control unit OC controls the operating frequency of the first motor M1 of the compressor 12, the rotation speed of the second motor M2 of the outdoor fan 13, the state of the four-way selector valve 16, and the opening degree of the expansion valve 15.
The outdoor control unit OC is also connected to the humidification rotor 22, the first fan 23, the switching damper 24, the heater 25, and the second fan 26. The outdoor control unit OC outputs control signals for executing and stopping the operation of the humidification ventilator unit 20 to the humidification rotor 22, the first fan 23, the switching damper 24, the second fan 26, and the heater 25. The outdoor control unit OC controls the rotation speeds of the fourth motor M4 of the first fan 23 and the sixth motor M6 of the second fan 26, the operations of the humidification rotor 22 and the switching damper 24, and the output of the heater 25.
The detection value of the indoor air temperature sensor 53 and the detection value of the indoor air humidity sensor 54 are input to the indoor control IC.
The indoor control IC is communicably connected to the remote controller 40. The indoor control unit IC is connected to the indoor fan 32, the airflow direction adjusting unit 36, and the filter cleaning mechanisms 60 and 70. The indoor control unit IC outputs control signals for executing and stopping the operation of the indoor unit 30 to the indoor fan 32, the airflow direction adjusting unit 36, and the filter cleaning mechanisms 60 and 70. The indoor control IC controls the rotation speed of the seventh motor M7 of the indoor fan 32, the state of the wind direction adjustment unit 36 (the inclination angle of the blowout air guide plate 37), and the operations of the filter cleaning mechanisms 60 and 70. The indoor control IC is communicably connected to the outdoor control OC.
The remote controller 40 is communicably connected to the indoor control IC. The remote controller 40 transmits an instruction signal instructing the operation of the air conditioner 1 to the indoor control IC according to the operation of the input unit 42 by the user. When the indoor control IC receives the instruction signal from the remote controller 40, the instruction signal is sent to the outdoor control OC. The indoor control IC controls the operations of the above-described devices of the indoor unit 30 based on the instruction signal. When the outdoor control unit OC receives the instruction signal from the indoor control unit IC, it controls the operations of the respective devices of the outdoor unit 10 and the humidification ventilation unit 20.
(3) Operation and action
The operation modes executed by the air conditioner 1 include a cooling operation, a heating operation, a humidifying operation, an air supply operation, an air discharge operation, and a filter cleaning operation. The control unit C executes these operations in response to an instruction signal from the remote controller 40.
(3-1) cooling operation
The cooling operation is an operation of cooling the air in the room by the indoor heat exchanger 34 serving as an evaporator. The set temperature in the cooling operation is instructed by the remote controller 40 at the start of the cooling operation or during the cooling operation. In the cooling operation, the control unit C operates the compressor 12, the outdoor fan 13, and the indoor fan 32. The control unit C sets the four-way selector valve 16 to the first state. The control unit C appropriately adjusts the opening degree of the expansion valve 15. In the cooling operation, the first refrigeration cycle is performed, and the compressed refrigerant releases heat in the outdoor heat exchanger 14 and evaporates in the indoor heat exchanger 34.
In the cooling operation, the control unit C adjusts the target evaporation temperature of the indoor heat exchanger 34 so that the indoor temperature detected by the indoor air temperature sensor 53 converges to the set temperature. The control unit C controls the rotation speed of the compressor 12 so that the evaporation temperature of the refrigerant in the indoor heat exchanger 34 converges to the target evaporation temperature. In the cooling operation, the air sent by the indoor fan 32 is cooled while passing through the indoor heat exchanger 34. The air cooled by the indoor heat exchanger 34 is supplied from the indoor air outlet 31b of the indoor unit 30 to the indoor space I.
(3-2) heating operation
The heating operation is an operation of heating the air in the room by the indoor heat exchanger 34 serving as a radiator. The set temperature during the heating operation is instructed by the remote controller 40 at the start of the heating operation or during the heating operation. In the heating operation, the control unit C operates the compressor 12, the outdoor fan 13, and the indoor fan 32. The control unit C sets the four-way selector valve 16 to the second state. The control unit C appropriately adjusts the opening degree of the expansion valve 15. In the heating operation, the second refrigeration cycle is performed, and in the second refrigeration cycle, the refrigerant compressed by the compressor 12 releases heat in the indoor heat exchanger 34 and evaporates in the outdoor heat exchanger 14.
During the heating operation, the control unit adjusts the target condensation temperature of the indoor heat exchanger 34 so that the indoor temperature detected by the indoor air temperature sensor 53 converges to the set temperature. The control unit C controls the rotation speed of the compressor 12 so that the condensation temperature of the refrigerant in the indoor heat exchanger 34 converges to the target condensation temperature. In the heating operation, the air sent by the indoor fan 32 is heated while passing through the indoor heat exchanger 34. The air heated by the indoor heat exchanger 34 is supplied from the indoor air outlet 31b of the indoor unit 30 to the indoor space I.
(3-3) humidifying operation
The humidification operation is an operation of humidifying the air in the room by the humidification ventilation unit 20. In the humidification operation, as shown by solid arrows in fig. 2, outdoor air is sent to the indoor unit 30 through the hose 2. In the humidification operation, the control unit C operates the heater 25, the humidification rotor 22, and the first fan 23. The control unit C operates the second fan 26. The control unit C sets the switching damper 24 to the first state. The control unit C stops the compressor 12 and the outdoor fan 13. In the humidification operation, the refrigeration cycle in the refrigerant circuit R is not performed.
In the humidification operation, the outdoor air sent by the first fan 23 passes through the moisture absorption region 22A of the humidification rotor 22, and moisture contained in the outdoor air is absorbed by the moisture absorption region 22A of the humidification rotor 22. The moisture absorption region 22A of the humidification rotor 22 absorbs moisture, and the moisture absorption region 22B is configured by the rotation of the humidification rotor 22 moving to the second passage 28. The outdoor air heated by the heater 25 passes through the moisture release region 22B of the humidifying rotor 22, and moisture is released from the humidifying rotor 22 to the heated air. In the humidifying operation, the air having a high humidity given by the humidifying rotor 22 and the water is sent to the indoor unit 30 through the hose 2, and is supplied from the indoor air outlet 31b of the indoor unit 30 to the indoor space I.
(3-4) air supply operation
The air supply operation is an operation of supplying outdoor air to the indoor space. In the air supply operation, as shown by solid arrows in fig. 2, outdoor air is sent from the indoor ventilation port (outflow port) 2a to the indoor unit 30 through the hose 2 and the extension portion 2b. In the air supply operation, the control unit C stops the heater 25, the humidification rotor 22, and the first fan 23, and operates the second fan 26. The control unit C sets the switching damper 24 to the first state. The control unit C stops the compressor 12 and the outdoor fan 13. In the air-supply operation, the refrigeration cycle in the refrigerant circuit R is not performed. In the air supply operation, the outdoor air sent by the second fan 26 is sent to the indoor unit 30 through the hose 2, and is supplied from the indoor air outlet 31b of the indoor unit 30 to the indoor space I.
(3-5) exhaust operation
The exhaust operation is an operation of exhausting indoor air to the outside. In the exhaust operation, as shown by a broken-line arrow in fig. 2, the indoor air is sent from the indoor ventilation port (inflow port) 2a in the indoor unit 30 to the humidification ventilation unit 20 via the extension portion 2b and the hose 2. In the exhaust operation, the control unit C stops the heater 25, the humidification rotor 22, and the first fan 23, and operates the second fan 26. The control unit C sets the switching damper 24 to the second state. The control unit C stops the compressor 12 and the outdoor fan 13. In the discharge operation, the refrigeration cycle in the refrigerant circuit R is not performed. In the air discharge operation, the air in the room fed by the second fan 26 is fed to the humidification ventilation unit 20 through the hose 2, and is discharged to the outside from the air intake/exhaust port 21c of the humidification ventilation unit 20.
(3-6) Filter cleaning operation
The filter cleaning operation is an operation of removing dust adhering to the filter 33 by the various operations described above by the filter cleaning mechanisms 60 and 70. The filter cleaning operation may be performed based on an instruction signal from the remote controller 40, or may be performed at other predetermined timing after the completion of the various operations. During the filter cleaning operation, the control unit C stops the compressor 12, the outdoor fan 13, and the indoor fan 32. That is, during the filter cleaning operation, the refrigeration cycle in the refrigerant circuit R is not performed. In the filter cleaning operation, the control unit C stops the heater 25, the humidification rotor 22, and the first fan 23. That is, the filter cleaning operation is not performed in the humidifying operation.
Specifically, as shown in fig. 6, first, in step S1, the control unit C determines whether or not the humidity of outdoor air (hereinafter referred to as outdoor air humidity) which is air outside the room is higher than the humidity of indoor air (hereinafter referred to as indoor air humidity) which is air inside the room. The outdoor air humidity is measured by an outdoor air humidity sensor 52, and the indoor air humidity is measured by an indoor air humidity sensor 54.
When it is determined in step S1 that the outdoor air humidity is higher than the indoor air humidity, the control unit C starts the filter cleaning operation by operating the filter cleaning mechanisms 60 and 70 while exhausting the humidification and ventilation unit 20 in step S2. In step S2, the control unit C may increase the amount of exhaust air of the humidification ventilation unit 20 compared with the amount of exhaust air of the humidification ventilation unit 20 when the filter cleaning mechanisms 60, 70 are not operated (the above-described normal exhaust operation).
When it is determined in step S1 that the outdoor air humidity is lower than the indoor air humidity, the control unit C starts the filter cleaning operation by operating the filter cleaning mechanisms 60 and 70 while the humidification and ventilation unit 20 is supplied with air in step S3. In step S3, the control unit C may close the indoor air outlet 31b by placing the air outlet guide 37 of the indoor unit 30 in the closed position.
In the example shown in fig. 6, when the outdoor air humidity is equal to the indoor air humidity, the filter cleaning operation is started while the humidification ventilation unit 20 is being exhausted in step S2. However, alternatively, when the outdoor air humidity is equal to the indoor air humidity, the filter cleaning operation may be started while the humidification ventilation unit 20 is supplied in step S3.
Next, in step S4, the control unit C stops the operation of the filter cleaning mechanisms 60 and 70, and ends the filter cleaning operation. Thereby, the air conditioner 1 is in a state in which a new operation is enabled.
The air supply or the air discharge by the humidification ventilation unit 20 may be performed over the entire period from the start to the end of the filter cleaning operation, or may be performed during a part of the period. Further, the supply or discharge of air by the humidification ventilator unit 20 may be started a predetermined time (for example, about several seconds to several minutes) before the start of the filter cleaning operation. After a predetermined time (for example, about several seconds to several minutes) has elapsed after the filter cleaning operation is completed, the air supply or the air discharge by the humidification ventilation unit 20 may be completed.
In the example shown in fig. 6, the indoor air humidity and the outdoor air humidity are compared in step S1, and the humidification ventilation unit 20 is caused to perform ventilation or air supply according to the magnitude relation. However, instead of this, the humidification ventilation unit 20 may be used to perform ventilation or air supply using another reference (for example, a magnitude relation between the indoor air temperature and the outdoor air temperature), or a ventilation mode (for example, air supply) may be set in advance.
Features of the embodiment
As described above, the air conditioner 1 of the present embodiment includes the indoor unit 30, the humidification and ventilation unit 20, and the control unit C, wherein the indoor unit 30 adjusts the temperature of the air in the room, the humidification and ventilation unit 20 discharges the air in the room, and the control unit C controls the operations of the indoor unit 30 and the humidification and ventilation unit 20. The indoor unit 30 includes a filter 33 and filter cleaning means 60 and 70, the filter 33 removes dust from air taken from the room, and the filter cleaning means 60 and 70 remove dust adhering to the filter 33. In the indoor unit 30, an indoor ventilation port 2a communicating with the humidification ventilation unit 20 is arranged on the downstream side of the filter 33 in the internal air flow direction (indoor air passage 31 c). When the filter cleaning mechanisms 60 and 70 are operated, the control unit C causes the ventilator 20 to perform exhaust air or supply air.
According to the air conditioner 1 of the present embodiment, by exhausting air during the filter cleaning operation, dust released from the filter 33 can be discharged to the outside of the indoor unit 30. Further, by supplying air during the filter cleaning operation, the inside of the indoor unit 30 can be kept at a positive pressure, and dust adhering to the surface of the filter 33 (the surface facing the indoor suction port 31 a) can be suppressed from moving to the back surface side of the filter 33 which is difficult to clean by passing through the filter 33. Therefore, the dust removal efficiency can be improved.
In the air conditioner 1 of the present embodiment, the humidification ventilation unit 20 may be configured to be capable of performing both air supply and air discharge. The control unit C may cause the humidification and ventilation unit 20 to perform ventilation when the filter cleaning mechanisms 60, 70 are operated and cause the humidification and ventilation unit 20 to perform ventilation when the outdoor air humidity is higher than the indoor air humidity and cause the humidification and ventilation unit 20 to perform ventilation when the outdoor air humidity is lower than the indoor air humidity. In this way, the filter cleaning operation can be performed while introducing air having low humidity in the indoor air and the outdoor air into the indoor unit 30. Therefore, dust released from the filter 33 can be prevented from adhering to the inside of the indoor unit 30 such as the heat exchanger 34 due to moisture, and mold generation and the like can be prevented.
In the air conditioner 1 of the present embodiment, the control unit C may be configured to increase the amount of air discharged from the humidification ventilation unit 20 when the filter cleaning mechanisms 60, 70 are operated and the humidification ventilation unit 20 is discharged than the amount of air discharged from the humidification ventilation unit 20 when the filter cleaning mechanisms 60, 70 are not operated. In this way, by exhausting the air with a larger air volume than during the normal exhaust during the filter cleaning operation, the dust released from the filter 33 can be more reliably discharged to the outside of the indoor unit 30, and therefore the dust removal efficiency is further improved.
In the air conditioner 1 of the present embodiment, the air outlet port 31b of the indoor unit 30 may be provided with the air outlet deflector 37, and the control unit C may close the air outlet deflector 37 when the humidifying/ventilating unit 20 is supplying air during operation of the filter cleaning mechanisms 60, 70. In this way, by supplying air during the filter cleaning operation, the inside of the indoor unit 30 can be kept at a higher pressure, and therefore, dust adhering to the surface of the filter 33 can be further suppressed from moving to the back surface side where cleaning is difficult. Therefore, the dust removal efficiency can be further improved.
Other embodiments
In the above-described embodiment, the case where the ventilator of the present disclosure is configured as the humidification ventilation unit 20 and is integrally provided outside the room with the outdoor unit 10 has been exemplified, but the structure, arrangement, and the like of the ventilator of the present disclosure are not particularly limited as long as at least one of ventilation exhaust gas and ventilation supply gas is performed. For example, the ventilation device of the present disclosure may not have a humidification function. The ventilator of the present disclosure may be integrated with or separate from the indoor unit 30 in the room, or may be provided separately from the outdoor unit 10 in the room. In other words, the ventilation fan of the ventilation device of the present disclosure may be provided outdoors of the outdoor unit 10 or the like, or may be provided indoors of the indoor unit 30 or the like.
While the embodiments have been described above, it should be understood that various changes can be made in the embodiments or aspects without departing from the spirit and scope of the claims. In addition, the above embodiments may be appropriately combined or replaced as long as the functions of the objects of the present disclosure are not affected. Moreover, the terms "first", "second", and … … described above are used only to distinguish between sentences containing the terms, and are not intended to limit the number and order of the sentences.
Industrial applicability
In view of the foregoing, the present disclosure is useful for an air conditioning apparatus.
Symbol description-
1 air conditioner
20 humidification ventilation unit (ventilator)
2a indoor ventilation port (ventilation port)
30 indoor unit
31b indoor air outlet (air outlet)
33 filter
37 blow-out air deflector
60 filter cleans mechanism
70 filter cleaning mechanism
C control part
Claims (4)
1. An air conditioning apparatus, characterized in that:
the air conditioner comprises an indoor unit (30), a ventilation device (20) and a control part (C),
the indoor unit (30) adjusts the temperature of the indoor air,
the ventilation device (20) ventilates the room,
the control unit (C) controls the operation of the indoor unit (30) and the ventilation device (20),
the indoor unit (30) has a filter (33) and filter cleaning means (60, 70), the filter (33) removes dust from air taken from the room, the filter cleaning means (60, 70) removes the dust adhering to the filter (33),
in the indoor unit (30), a ventilation port (2 a) communicating with the ventilator (20) is arranged on the downstream side of the filter (33) in the inner air flow direction,
when the filter cleaning mechanisms (60, 70) are operated, the control unit (C) causes the ventilation device (20) to perform ventilation or air supply.
2. An air conditioning apparatus according to claim 1, wherein:
the ventilation device (20) is configured to be capable of performing both air supply and air exhaust,
when the filter cleaning means (60, 70) is operated, the control unit (C) causes the ventilation device (20) to exhaust air when the humidity of outdoor air, which is outside the room, is higher than the humidity of indoor air, and causes the ventilation device (20) to supply air when the humidity of outdoor air is lower than the humidity of indoor air.
3. An air conditioning apparatus according to claim 1 or 2, characterized in that:
when the filter cleaning means (60, 70) is operated, the control unit (C) causes the amount of exhaust air of the ventilator (20) to be larger than the amount of exhaust air of the ventilator (20) when the filter cleaning means (60, 70) is not operated, when the ventilator (20) is exhausting.
4. An air conditioning apparatus according to any one of claims 1 to 3, wherein:
an air outlet (31 b) of the indoor unit (30) is provided with a blowout air deflector (37),
when the filter cleaning mechanisms (60, 70) are operated, the control unit (C) closes the blowout air guide plate (37) under the condition that the ventilation device (20) supplies air.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-141537 | 2021-08-31 | ||
| JP2021141537A JP7148690B1 (en) | 2021-08-31 | 2021-08-31 | air conditioner |
| PCT/JP2022/031601 WO2023032738A1 (en) | 2021-08-31 | 2022-08-22 | Air-conditioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117693652A true CN117693652A (en) | 2024-03-12 |
Family
ID=83507308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280051523.1A Pending CN117693652A (en) | 2021-08-31 | 2022-08-22 | Air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP7148690B1 (en) |
| CN (1) | CN117693652A (en) |
| WO (1) | WO2023032738A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7301577B2 (en) | 2019-03-29 | 2023-07-03 | キヤノン株式会社 | RECORDING DEVICE, CONTROL METHOD FOR RECORDING DEVICE, AND PROGRAM |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172280A (en) | 2003-12-09 | 2005-06-30 | Hitachi Home & Life Solutions Inc | Air conditioner |
| JP4240115B2 (en) | 2006-11-16 | 2009-03-18 | ダイキン工業株式会社 | Air conditioner |
| HRP20060423A2 (en) * | 2006-12-05 | 2008-06-30 | Tomičić Mario | Sign for informing about condition of vehicle involved in accident |
| JP2008145090A (en) | 2006-12-13 | 2008-06-26 | Toshiba Kyaria Kk | Indoor unit of air conditioner |
| BRPI0810273A2 (en) | 2007-05-17 | 2019-09-24 | Daikin Ind Ltd | "indoor unit of an air conditioner". |
| JP2009002601A (en) | 2007-06-22 | 2009-01-08 | Panasonic Corp | Air-conditioner |
| JP2009150563A (en) | 2007-12-19 | 2009-07-09 | Hitachi Appliances Inc | Air conditioner |
| JP2010144974A (en) | 2008-12-17 | 2010-07-01 | Daikin Ind Ltd | Air conditioner |
| JP7104339B2 (en) | 2020-03-31 | 2022-07-21 | ダイキン工業株式会社 | Air quality adjustment system |
-
2021
- 2021-08-31 JP JP2021141537A patent/JP7148690B1/en active Active
-
2022
- 2022-08-22 WO PCT/JP2022/031601 patent/WO2023032738A1/en unknown
- 2022-08-22 CN CN202280051523.1A patent/CN117693652A/en active Pending
- 2022-08-23 JP JP2022132606A patent/JP2023035932A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023032738A1 (en) | 2023-03-09 |
| JP2023034985A (en) | 2023-03-13 |
| JP2023035932A (en) | 2023-03-13 |
| JP7148690B1 (en) | 2022-10-05 |
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