CN102213463B - Air conditioner using combustible refrigerant and control method thereof - Google Patents
Air conditioner using combustible refrigerant and control method thereof Download PDFInfo
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Abstract
The invention discloses an air conditioner using a combustible refrigerant and a control method thereof. The air conditioner using the combustible refrigerant comprises a control part, an indoor machine arranged at the indoor side and an outdoor machine positioned at the outdoor side, wherein the indoor machine is connected with the outdoor machine to form a circulating loop through a pipeline, the indoor machine comprises an indoor heat exchanger, the outdoor machine comprises an outdoor heat exchanger, a pipeline connected between the indoor heat exchanger and the outdoor heat exchanger is provided with an electromagnetic valve for controlling on or off of the pipeline and a pipeline switching device for controlling the change of a refrigerant flow channel, the electromagnetic valve and the pipeline switching device are respectively electrically connected with the control part, the electromagnetic valve sends a signal by the control part according to the working state of the air conditioner and is switched on when being electrified, a refrigerant leak detector used for detecting refrigerant concentration is arranged near an electronic control box of the indoor machine and/or near an air outlet, and the refrigerant leak detector is electrically connected with the control part through a signal wire. The invention has characteristics of simple and reasonable structure, flexibility in operation, high safety degree and wide application range.
Description
Technical field
The present invention relates to a kind of air-conditioner, particularly a kind of air-conditioner and control method thereof of using combustible refrigerant.
Background technology
Since Montreal protocol was signed, various countries had launched the research of the alternative refrigerant of R22 one after another, and present main alternative refrigerant is R410A, and the ODP of this R410A refrigerant is zero, but GWP is higher.Along with the pay attention to day by day of international community to greenhouse effects, the refrigerant that need seeking ODP be zero, GWP is less, and the refrigerant that meets this requirement has R32, R290, R161 etc., still, the refrigerant that these ODP are zero, GWP is less all has combustibility.
Have the greateset risk that flammable refrigerant is applied on domestic air conditioner and be above-mentioned, the cold media gas that occurs to leak has combustibility in certain concentration range.And due to a lot of household electrical appliance often being arranged in the room, the risk of lighting combustible refrigerant gas is arranged, the risk of the blast of producing even may be arranged in the room of sealing.
For overcoming above-mentioned shortcoming, Chinese patent literature CN201582948U discloses a kind of air-conditioner on September 15th, 2010, this air-conditioner uses the R290 refrigerant, this scheme is that the magnetic valve of control piper break-make is set on the pipeline that connects between indoor set heat exchanger and outdoor unit heat exchanger, cut off indoor set and outdoor unit heat exchanger by shut electromagnetic valve, even make indoor set leak, refrigerant in the indoor heat exchanger that leakage rate also only has indoor set and the pipeline that is connected, thereby the reduction leakage rate, the security that improves air-conditioning.Although this air-conditioner can reduce refrigerant in the indoor leakage rate,, the coolant quantity that exists in the tube connector of indoor and outdoor on the one hand is still more, and when particularly running into the air-conditioner that lengthens pipe arrangement, coolant quantity remaining in this tube connector can be more; On the other hand when indoor set just coolant leakage occurs, can reclaim a part of indoor-unit cooling-medium with compressor fully, do not need the refrigerant of all tube connectors and indoor set is all leaked in the room, thereby increase after coolant leakage risk in the room internal combustion.
Summary of the invention
Purpose of the present invention aims to provide air-conditioner and the control method thereof of a kind of simple and reasonable, flexible operation, safe coefficient use combustible refrigerant high, applied widely, to overcome weak point of the prior art.
a kind of air-conditioner that uses combustible refrigerant by this purpose design, comprise control assembly, the off-premises station that is positioned at the indoor set of indoor and is positioned at the outside, described indoor set and off-premises station connect into closed circuit by pipeline, indoor set comprises indoor heat exchanger, off-premises station comprises outdoor heat exchanger, be provided with the magnetic valve of control piper break-make on the pipeline that is connected between described indoor heat exchanger and outdoor heat exchanger and control the pipeline reversing service that refrigerant flow changes, described magnetic valve and pipeline reversing service are electrically connected to control assembly respectively, the break-make of described magnetic valve provides signal by control assembly according to the duty of air-conditioning, conducting during energising, it is characterized in that being provided with near the electric-controlled box of described indoor set and/or near air outlet the refrigerant leak detector for detection of refrigerant concentration, the refrigerant leak detector is electrically connected to control assembly by holding wire.
Described magnetic valve and pipeline reversing service are arranged on indoor or outside.
Described pipeline reversing service is two-port valve or the cross valve of triple valve, two parallel connections.
The refrigerant that uses in described air-conditioner is flammable refrigerant.
A kind of control method of using the air-conditioner of combustible refrigerant, it is characterized in that at first detecting the refrigerant leak detector after air-conditioner powers on, when the refrigerant leak detector has detected coolant leakage, air-conditioner does not process the instruction that receives, air-conditioner shows failure code and buzzer warning, and the superpower wind running of the indoor fan motor of air-conditioner, after forced-ventilated after a while, whole air-conditioner outage; After the refrigerant leak detector did not detect coolant leakage, the side can carry out subsequent operation.
Under the refrigerating operaton pattern, at first pipeline reversing service and magnetic valve energising, after the compressor of refrigerant from off-premises station discharged, arrive outdoor heat exchanger through the cross valve in off-premises station and carry out condensation, after the throttle part throttling, the first path in the flowing pipe circuit switching device arrives the indoor heat exchanger evaporation, flows back to compressor by tube connector at last; Be in operation after the refrigerant leak detector detects indoor set generation coolant leakage, pipeline reversing service outage switching refrigerant path, alternate path in pipeline reversing service is communicated with, the indoor fan motor moves with superpower wind, after this moment, refrigerant was discharged from compressor,, cross throttle part and flow back to compressor by the alternate path in pipeline reversing service to outdoor heat exchanger through cross valve, pipeline and the refrigerant in indoor set between indoor set and off-premises station flow back to compressor after magnetic valve; Through t1 time rear electromagnetic valve, compressor and the outage of outdoor fan motor, the display board of air-conditioner shows failure code and buzzer warning, the operation sequence of air-conditioner is locked, and air-conditioner does not process the instruction that receives, and this moment, the indoor fan motor continued to run up; After forced-ventilated after a while, whole air-conditioner outage; Still show failure code after air-conditioner re-powers, the user can't start shooting, and need to can normally be moved after to the program release by the maintenance personal.
Under the heating operation pattern, at first pipeline reversing service and magnetic valve energising, after the compressor of refrigerant from off-premises station discharged, arrive indoor heat exchanger through the cross valve in off-premises station and carry out condensation, after the first path after pipeline through connecting in the flowing pipe circuit switching device arrives the throttle part throttling, arrive outdoor heat exchanger, flow back to compressor by cross valve at last; It is in service after the refrigerant leak detector detects indoor set generation coolant leakage, the cross valve outage, pipeline reversing service outage switching refrigerant path, alternate path in pipeline reversing service is communicated with, the indoor fan motor moves with superpower wind, after this moment, refrigerant was discharged from compressor, arrives outdoor heat exchanger through cross valve, cross throttle part and flow back to compressor by the alternate path in pipeline reversing service, pipeline and the refrigerant in indoor set between indoor set and off-premises station flow back to compressor after magnetic valve; Through t1 time rear electromagnetic valve, compressor, the outage of outdoor fan motor, the display board of air-conditioner shows failure code and buzzer warning, the operation sequence of air-conditioner is locked, and air-conditioner does not process the instruction that receives, and this moment, the indoor fan motor continued to run up; After forced-ventilated after a while, whole air-conditioner outage; Still show failure code after air-conditioner re-powers, the user can't start shooting, and need to can normally be moved after to the program release by the maintenance personal.
Described t1 〉=10 second.
The time of described forced-ventilated is t0, t0 〉=15 second.
The present invention is by increasing refrigerant leak detector, pipeline reversing service and magnetic valve, and the break-make of reasonable control piper switching device shifter and magnetic valve, make and occur in the indoor set running to allow more refrigerants flow back to off-premises station after coolant leakage as far as possible, thereby reduce the leakage rate of combustible refrigerant in the room, improve the security reliability of air-conditioner.
Air-conditioner in the present invention can safety the use combustible refrigerant, guarantee can allow more refrigerant flow back to off-premises station after the indoor runs into coolant leakage, reduce the coolant leakage amount in the room, reduce the risk of room internal combustion, guarantee user personal safety and safety of property.
That the present invention has is simple and reasonable, flexible operation, safe coefficient characteristics high, applied widely.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the invention.
Fig. 2 is the structural representation of second embodiment of the invention.
Fig. 3 is control method flow chart of the present invention.
In figure: 100 is indoor set, and 101 is the refrigerant leak detector, and 102 is indoor heat exchanger, 103 is the indoor fan motor, and 200 is off-premises station, and 201 is compressor, 202 is cross valve, and 203 is the outdoor fan motor, and 204 is outdoor heat exchanger, 205 is capillary, and 206 is triple valve, and 207 is the liquid valve, 208 is air valve, 209 is magnetic valve, and 300 is control assembly
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
The first embodiment
referring to Fig. 1 and Fig. 3, the air-conditioner of this use combustible refrigerant, comprise control assembly 300, the off-premises station 200 that is positioned at the indoor set 100 of indoor and is positioned at the outside, described indoor set 100 connects into closed circuit with off-premises station 200 by pipeline, indoor set 100 comprises indoor heat exchanger 102, off-premises station 200 comprises outdoor heat exchanger 204, be provided with the magnetic valve 209 of control piper break-make on the pipeline that is connected between indoor heat exchanger 102 and outdoor heat exchanger 204 and control the pipeline reversing service that refrigerant flow changes, magnetic valve 209 and pipeline reversing service are electrically connected to control assembly respectively, the break-make of magnetic valve 209 provides signal by control assembly according to the duty of air-conditioning, conducting during energising, be provided with the refrigerant leak detector 101 for detection of refrigerant concentration near the electric-controlled box of indoor set 100 and/or near air outlet, this refrigerant leak detector 101 is electrically connected to control assembly 300 by holding wire.
In the present embodiment, pipeline reversing service is selected triple valve 206.Below be elaborated as an example of triple valve example.
Off-premises station 200 comprises compressor 201, cross valve 202, outdoor heat exchanger 204, capillary 205, triple valve 206, liquid valve 207, air valve 208, the magnetic valve 209 that is connected successively by pipeline.The first interface a of triple valve 206 is connected with an end of capillary 205, and the second interface b of triple valve 206 is connected with liquid valve 207, and the 3rd interface c of triple valve 206 is connected with an end of magnetic valve 209.The other end of magnetic valve 209 is connected with air valve 208.Off-premises station 200 is connected with air valve by liquid valve 207 and is connected with indoor heat exchanger 102 in indoor set 100.
Be provided with refrigerant leak detector 101 and indoor fan motor 103 for detection of the R290 refrigerant near the close electric-controlled box of indoor heat exchanger 102.
The first interface a of triple valve 206 and the 3rd interface c are connected between magnetic valve 209 and compressor 201.Be used for to control the holding wire that triple valve 206 and magnetic valve 209 start-stops use and be electrically connected to control assembly 300 respectively, refrigerant leak detector 101 is connected on control assembly 300 by holding wire.After triple valve 206 energisings, first interface a and the second interface b conducting; After outage, first interface a and the 3rd interface c conducting.
When air-conditioner during in normal refrigeration, triple valve 206 energisings, the first path of triple valve 206 is communicated with, the first interface a and the second interface b that are triple valve 206 are communicated with, combustible refrigerant carries out heat exchange from flowing to outdoor heat exchanger 204 through cross valve 202 after compressor 201 is discharged, then after capillary 205 throttlings again through the first interface a of triple valve 206 and the second interface b, cross liquid valve 207 to indoor heat exchanger 102 evaporation of absorbing heat, then pass through indoor and outdoor connecting pipe and air valve 208, get back to compressor 201 after crossing magnetic valve 209.
After refrigerant leak detector 101 detects indoor set 100 generation coolant leakages, triple valve 206 outages, the first path of triple valve 206 disconnects, the alternate path of triple valve 206 is communicated with, be first interface a and the 3rd interface c conducting of triple valve 206, refrigerant is got back to compressor 201 from the first interface a of triple valve 206 via the 3rd interface c, and meanwhile, the most of refrigerant in tube connector and indoor heat exchanger 102 flows back to compressor 201 after air valve 208, magnetic valve 209.
T1 is after the time for process, magnetic valve 209, compressor 201 and outdoor fan motor 203 all cut off the power supply, the display board of air-conditioner shows failure code and buzzer warning, the operation sequence of air-conditioner is locked, air-conditioner does not process the instruction that receives, and indoor fan motor 103 continues to run up at this moment; After forced-ventilated after a while, whole air-conditioner outage.The time of described forced-ventilated is t0, t0 〉=15 second.Described t1 〉=10 second.
When air-conditioner when normally heating, triple valve 206 energisings, the first path of triple valve 206 is communicated with, be first interface a and the second interface b conducting of triple valve 206, combustible refrigerant is discharged after cross valve 202, magnetic valve 209 and air valve 208 from compressor 201, flow into indoor heat exchanger 102 and carry out heat exchange, evaporate to outdoor heat exchanger 204 after triple valve 206 second interface b, first interface a and capillary 205 throttlings after combustible refrigerant process liquid valve 207 after heat exchange, get back to compressor 201 finally by cross valve 202.
after refrigerant leak detector 101 detects indoor set 100 generation coolant leakages, cross valve 202 outages, the refrigerant path is switched in triple valve 206 outage, the first path of triple valve 206 disconnects, alternate path in triple valve 206 is communicated with, the first interface a and the 3rd interface c that are triple valve 206 are communicated with, refrigerant is got back to compressor 201 through first interface a and the 3rd interface c from triple valve 206 after outdoor condenser 203 and capillary 205 after compressor 201 is discharged, most of refrigerant of tube connector and indoor heat exchanger 102 flows back to compressor 201 after air valve 208 is crossed magnetic valve 209 simultaneously.
T1 is after the time for process, magnetic valve 209, compressor 201 and outdoor fan motor 203 all cut off the power supply, the display board of air-conditioner shows failure code and buzzer warning, the operation sequence of air-conditioner is locked, air-conditioner does not process the instruction that receives, and indoor fan motor 103 continues to run up at this moment; After forced-ventilated after a while, whole air-conditioner cuts off the power supply again.The time of described forced-ventilated is t0, t0 〉=15 second.Described t1 〉=10 second.
Below in conjunction with Fig. 3, the control method of this air-conditioner is described:
After air-conditioner powers on, at first by refrigerant leak detector 101 detection systems, whether secondary refrigerant leakage is arranged, the system here comprises air-conditioner and room, then with result feedback to control assembly 300.When refrigerant leak detector 101 detects system coolant leakage is arranged, the air-conditioner air-conditioner does not process the instruction that receives, air-conditioner shows failure code and buzzer warning, and the superpower wind running of the indoor fan motor 103 of air-conditioner, after forced-ventilated after a while, whole air-conditioner cuts off the power supply again; After refrigerant leak detector 101 did not detect coolant leakage, the side can carry out subsequent operation.The time of forced-ventilated is t0, t0 〉=15 second.Can be set as 60 seconds the time of forced-ventilated here.
When air-conditioner during in the refrigerating operaton pattern, at first switched on to triple valve 206 and magnetic valve 209 by control assembly 300, in service when refrigerant leak detector 101 detects indoor set leakage refrigerant, triple valve 206 outages, indoor fan motor 103 is with superpower wind operation simultaneously.Move through t1 after the time with superpower wind at indoor fan motor 103, magnetic valve 209, compressor 201 and 203 outages of outdoor fan motor, the display board of air-conditioner shows failure code, buzzer warning.Described t1 〉=10 second.T1 can be set as 30～60 seconds here.At this moment, indoor fan motor 103 continues to run up; After forced-ventilated after a while, whole air-conditioner outage; Still show failure code after air-conditioner re-powers, the user can't start shooting, and need to can normally be moved after to the program release by the maintenance personal.The time t0 of forced-ventilated can be set as 30 seconds here.
When air-conditioner during in the heating operation pattern, at first control assembly 300 is to triple valve 206 and magnetic valve 209 energisings, and in service after refrigerant leak detector 101 detects indoor set leakage refrigerant, cross valve 202 cuts off the power supply, triple valve 206 outages, indoor fan motor 103 is with superpower wind operation simultaneously.Move through t1 after the time with superpower wind at indoor fan motor 103, magnetic valve 209, compressor 201 and outdoor motor 203 outages, the display board of air-conditioner shows failure code, buzzer warning.Described t1 〉=10 second.T1 can be set as 30～60 seconds here.At this moment, the operation sequence of air-conditioner is locked, and air-conditioner does not process the instruction that receives, and indoor fan motor 103 continues to run up at this moment; After forced-ventilated after a while, whole air-conditioner outage; Still show failure code after air-conditioner re-powers, the user can't start shooting, and need to can normally be moved after to the program release by the maintenance personal.The time t0 of forced-ventilated can be set as 30 seconds here.
The second embodiment
Referring to Fig. 2-Fig. 3, magnetic valve 209 and pipeline reversing service in the present embodiment are arranged on the indoor.
All the other are not stated part and see the first embodiment, no longer repeat.
Above-mentioned listed specific implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and the various modifications and variations of carrying out all belong to protection scope of the present invention.
Claims (9)
1. air-conditioner that uses combustible refrigerant, comprise control assembly (300), the off-premises station (200) that is positioned at the indoor set (100) of indoor and is positioned at the outside, described indoor set (100) connects into closed circuit with off-premises station (200) by pipeline, indoor set (100) comprises indoor heat exchanger (102), off-premises station (200) comprises outdoor heat exchanger (204), be provided with the magnetic valve (209) of control piper break-make on the pipeline that is connected between described indoor heat exchanger (102) and outdoor heat exchanger (204) and control the pipeline reversing service that refrigerant flow changes, described magnetic valve (209) and pipeline reversing service are electrically connected to control assembly respectively, the break-make of described magnetic valve (209) provides signal by control assembly according to the duty of air-conditioning, conducting during energising, it is characterized in that being provided with near the electric-controlled box of described indoor set (100) and/or near air outlet the refrigerant leak detector (101) for detection of refrigerant concentration, refrigerant leak detector (101) is electrically connected to control assembly (300) by holding wire,
Described pipeline reversing service has two paths;
The first path communication chamber external heat exchanger (204) and indoor heat exchanger (102), alternate path communication chamber external heat exchanger (204) and compressor (201), during described pipeline reversing service energising, the first path is communicated with, and alternate path is closed; The first path blockade during described pipeline reversing service no power, alternate path is communicated with.
2. the air-conditioner of use combustible refrigerant according to claim 1, is characterized in that described magnetic valve (209) and pipeline reversing service are arranged on indoor or outside.
3. the air-conditioner of use combustible refrigerant according to claim 1, is characterized in that described pipeline reversing service is the two-port valve of single triple valve (206), two parallel connections or single cross valve.
According to claim 1 to 3 arbitrary described use combustible refrigerant air-conditioner, it is characterized in that the refrigerant that uses in described air-conditioner is flammable refrigerant.
5. the control method of the air-conditioner of a use combustible refrigerant as claimed in claim 1, it is characterized in that at first detecting refrigerant leak detector (101) after air-conditioner powers on, when refrigerant leak detector (101) when coolant leakage having been detected, air-conditioner does not process the instruction that receives, air-conditioner shows failure code and buzzer warning, and the superpower wind running of the indoor fan motor (103) of air-conditioner, after forced-ventilated after a while, whole air-conditioner outage; After refrigerant leak detector (101) did not detect coolant leakage, the side can carry out subsequent operation.
6. the control method of the air-conditioner of use combustible refrigerant according to claim 5, it is characterized in that under the refrigerating operaton pattern, at first pipeline reversing service and magnetic valve (209) energising, after the compressor (201) of refrigerant from off-premises station (200) discharged, arrive outdoor heat exchanger (204) through the cross valve (202) in off-premises station (200) and carry out condensation, after the throttle part throttling, the first path in the flowing pipe circuit switching device arrives indoor heat exchanger (102) evaporation, flows back to compressor (201) by tube connector at last, be in operation after refrigerant leak detector (101) detects indoor set (100) generation coolant leakage, pipeline reversing service outage switching refrigerant path, alternate path in pipeline reversing service is communicated with, indoor fan motor (103) moves with superpower wind, after this moment, refrigerant was discharged from compressor (201), arrive outdoor heat exchanger (204) through cross valve (202), cross throttle part and flow back to compressor (201) by the alternate path in pipeline reversing service, be positioned at pipeline between indoor set (100) and off-premises station (200) and the refrigerant of indoor set (100) and flow back to compressor (201) after magnetic valve (209), through t1 time rear electromagnetic valve (209), compressor (201) and outdoor fan motor (203) outage, the display board of air-conditioner shows failure code and buzzer warning, the operation sequence of air-conditioner is locked, air-conditioner does not process the instruction that receives, and indoor fan motor this moment (103) continues to run up, after forced-ventilated after a while, whole air-conditioner outage, still show failure code after air-conditioner re-powers, the user can't start shooting, and need to can normally be moved after to the program release by the maintenance personal.
7. the control method of the air-conditioner of use combustible refrigerant according to claim 5, it is characterized in that under the heating operation pattern, at first pipeline reversing service and magnetic valve (209) energising, after the compressor (201) of refrigerant from off-premises station (200) discharged, arrive indoor heat exchanger (102) through the cross valve (202) in off-premises station (200) and carry out condensation, after the first path after pipeline through connecting in the flowing pipe circuit switching device arrives the throttle part throttling, arrive outdoor heat exchanger (204), flow back to compressor (201) by cross valve (202) at last, it is in service after refrigerant leak detector (101) detects indoor set (100) generation coolant leakage, cross valve (202) outage, pipeline reversing service outage switching refrigerant path, alternate path in pipeline reversing service is communicated with, indoor fan motor (103) moves with superpower wind, after this moment, refrigerant was discharged from compressor (201), arrive outdoor heat exchanger (204) through cross valve (202), cross throttle part and flow back to compressor (201) by the alternate path in pipeline reversing service, be positioned at pipeline between indoor set (100) and off-premises station (200) and the refrigerant of indoor set (100) and flow back to compressor (201) after magnetic valve (209), through t1 time rear electromagnetic valve (209), compressor (201), outdoor fan motor (203) outage, the display board of air-conditioner shows failure code and buzzer warning, the operation sequence of air-conditioner is locked, air-conditioner does not process the instruction that receives, and indoor fan motor this moment (103) continues to run up, after forced-ventilated after a while, whole air-conditioner outage, still show failure code after air-conditioner re-powers, the user can't start shooting, and need to can normally be moved after to the program release by the maintenance personal.
8. the control method of the air-conditioner of according to claim 6 or 7 described use combustible refrigerants is characterized in that described t1 〉=10 second.
According to claim 5 to 7 arbitrary described use combustible refrigerant the control method of air-conditioner, the time that it is characterized in that described forced-ventilated is t0, t0 〉=15 second.
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| CN 201110138582 CN102213463B (en) | 2011-05-26 | 2011-05-26 | Air conditioner using combustible refrigerant and control method thereof |
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| CN104566637B (en) * | 2013-10-29 | 2018-04-03 | 广东美的暖通设备有限公司 | The control method of multiple on-line system and its indoor set and outdoor unit |
| CN103940057A (en) * | 2014-03-27 | 2014-07-23 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner with refrigerant leakage display function and display control method thereof |
| CN104101066B (en) * | 2014-07-04 | 2017-01-04 | 珠海格力电器股份有限公司 | Air-conditioning protection system and control method, air-conditioner |
| CN105805845A (en) * | 2014-12-31 | 2016-07-27 | 广东美的制冷设备有限公司 | Window type room air conditioner and control method of window type room air conditioner |
| CN106871373A (en) * | 2017-03-17 | 2017-06-20 | 广东美的制冷设备有限公司 | The processing method and processing device of air-conditioner coolant leakage |
| CN107477795A (en) * | 2017-08-28 | 2017-12-15 | 广东美的制冷设备有限公司 | Combustible refrigerant air-conditioning and its control method |
| CN107610423A (en) * | 2017-09-22 | 2018-01-19 | 江苏钤钫环保科技有限公司 | A kind of natural coolant leakage alarm monitoring system |
| CN108072127A (en) * | 2017-12-08 | 2018-05-25 | 广东美的制冷设备有限公司 | Window air conditioner and its control method, computer readable storage medium |
| JP7412887B2 (en) * | 2019-01-02 | 2024-01-15 | ダイキン工業株式会社 | Air conditioner and flow path switching valve |
| CN110044007A (en) * | 2019-04-29 | 2019-07-23 | 广东美的制冷设备有限公司 | Refrigerant leakage detection method, system and the air-conditioning of air-conditioning |
| CN110285541B (en) * | 2019-07-01 | 2020-05-22 | 珠海格力电器股份有限公司 | Multi-split air conditioner leakage position automatic positioning method, device and equipment |
| CN115823696A (en) * | 2021-09-17 | 2023-03-21 | 杭州先途电子有限公司 | Control device and method and air conditioning system |
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| JP2609907B2 (en) * | 1988-08-12 | 1997-05-14 | 三洋電機株式会社 | Air conditioner |
| CN2674343Y (en) * | 2003-12-25 | 2005-01-26 | 朱学龙 | Fast mounting environmental protection air-conditioner |
| CN2762028Y (en) * | 2004-12-24 | 2006-03-01 | 广东美的电器股份有限公司 | Air conditioner |
| JP4912308B2 (en) * | 2005-05-06 | 2012-04-11 | パナソニック株式会社 | Refrigeration cycle equipment |
| CN202101335U (en) * | 2011-05-26 | 2012-01-04 | 广东美的电器股份有限公司 | Air conditioner using combustible refrigerant |
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