CN202188563U - Air conditioner using a flammable secondary refrigerant - Google Patents
Air conditioner using a flammable secondary refrigerant Download PDFInfo
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- CN202188563U CN202188563U CN2011202478876U CN201120247887U CN202188563U CN 202188563 U CN202188563 U CN 202188563U CN 2011202478876 U CN2011202478876 U CN 2011202478876U CN 201120247887 U CN201120247887 U CN 201120247887U CN 202188563 U CN202188563 U CN 202188563U
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Abstract
An air conditioner using a flammable secondary refrigerant comprises a control component, an indoor machine arranged on the indoor side and an outdoor machine arranged on the outdoor side, wherein the indoor machine and the outdoor machine are connected by a pipeline to form a cycle loop, the indoor machine comprises an indoor heat exchanger, the outdoor machine comprises an outdoor heat exchanger and a compressor, a throttling assembly and a solenoid valve for controlling the on state and the off state of the pipeline are arranged on the pipeline for connecting the indoor heat exchanger and the outdoor heat exchanger, the solenoid valve is electrically connected with the control component, more than one low-pressure sensor is arranged on the pipeline between the compressor and the indoor heat exchanger and electrically connected with the control component; a secondary refrigerant leak detector for detecting the concentration of the secondary refrigerant is arranged adjacent to an electric control box of the indoor machine and/or an air outlet and electrically connected with the control component by a signal line. The air conditioner has features of simple and reasonable structure, flexible operation, high safety degree and wide application range.
Description
Technical field
The utility model relates to a kind of air-conditioner, particularly a kind of air-conditioner that uses flammable 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, need to seek ODP and be zero, the less refrigerant of GWP, and the refrigerant that meets this requirement there are R32, R290, R161 etc., still, these ODP are zero, the less refrigerant of GWP all has combustibility.Have the greateset risk that flammable refrigerant is applied on the domestic air conditioner and be that the cold media gas that takes place to leak has combustibility in certain concentration range above-mentioned.And, the risk of lighting flammable cold media gas is arranged owing in the room a lot of household electrical appliance are often arranged, in the room of sealing even have a risk of the blast of producing.
In order to overcome above-mentioned shortcoming; Many air-conditionings manufacturer has done many effort, discloses a kind of air-conditioner on September 15th, 2010 like Chinese patent document number CN201582948U, and this air-conditioner uses the R290 refrigerant; This scheme is the magnetic valve that the control piper break-make is set on the pipeline that connects between indoor set heat exchanger and the off-premises station heat exchanger; Cut off indoor set and off-premises station heat exchanger through closing magnetic valve, even make indoor set leak, the refrigerant in the indoor heat exchanger that leakage rate also has only indoor set and the pipeline that is connected; Thereby the reduction leakage rate, the security that improves air-conditioning.Though this air-conditioner can reduce refrigerant in the indoor leakage rate, have 2 deficiencies, the first, the coolant quantity that exists in the tube connector of indoor and outdoor is still more, particularly run into the lengthening pipe arrangement air-conditioner the time, coolant quantity remaining in this tube connector can be more; The second, 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 behind the coolant leakage risk of internal combustion in the room.
Chinese patent document number CN 101539356A discloses a kind of flame proof and explosion proof system of combustible refrigeration agent and method of operating on September 23rd, 2009: comprise refrigeration system; On the pipeline between refrigeration system throttle mechanism and the evaporimeter, add a magnetic valve; Between condenser and reservoir, add magnetic valve, add the hydrocarbon detection probe at evaporimeter and place, condenser air port.Opens solenoid valve and magnetic valve at first simultaneously, compressor and starting then, system gets into normal refrigerating operaton; When the hydrocarbon detection probe monitors danger signal, close magnetic valve earlier, utilize compressor that refrigerant all is transported in the reservoir, close magnetic valve and air-conditioner then.Though this technology can reduce the leakage rate of refrigerant in the room, there are 2 deficiencies: the first, the refrigerant of recovery can not guarantee all to reclaim in the reservoir; The second, air is incompressible, very easily occurs air when reclaiming refrigerant and is compressed the risk that produces blast in the system of inhaling back and in compressor.
The utility model content
The purpose of the utility model aims to provide the air-conditioner of a kind of simple and reasonable, flexible operation, the flammable refrigerant of use that safe coefficient is high, applied widely, to overcome weak point of the prior art.
A kind of air-conditioner that uses flammable refrigerant by this purpose design; The off-premises station that comprises control assembly, is positioned at the indoor set of indoor and is positioned at the outside; Indoor set and off-premises station connect into closed circuit through pipeline, and indoor set comprises indoor heat exchanger, and off-premises station comprises outdoor heat exchanger and compressor; The pipeline that is connected between indoor heat exchanger and the outdoor heat exchanger is provided with the magnetic valve of orifice union and control piper break-make; Magnetic valve is electrically connected with control assembly, and the break-make of magnetic valve provides signal by control assembly according to the duty of air-conditioning, magnetic valve conducting when energising; It is characterized in that the pipeline between compressor and the indoor heat exchanger is provided with more than one low pressure sensor, low pressure sensor is electrically connected with control assembly; Be provided with the refrigerant leak detector that is used to detect refrigerant concentration near the electric-controlled box of indoor set and/or near the air outlet, the refrigerant leak detector is electrically connected with control assembly through holding wire.
Pipeline between said indoor set and the off-premises station is provided with liquid valve and air valve, and low pressure sensor is arranged on the pipeline between compressor and the air valve.
Said orifice union and magnetic valve are arranged on indoor or outside.
Said orifice union is an electric expansion valve, and electric expansion valve is electrically connected with control assembly, electric expansion valve open step number according to the suction temperature of compressor and evaporating temperature decision, the initial opening of electric expansion valve determines according to outdoor temperature.The refrigerant that uses in the said air-conditioner is flammable refrigerant.
, air-conditioner at first detects the refrigerant leak detector after powering on; When the refrigerant leak detector has detected coolant leakage; Then air-conditioner does not process the instruction that receives, and air-conditioner shows failure code and buzzer warning, and the superpower wind running of the indoor fan motor of air-conditioner; Behind forced-ventilated after a while, whole air-conditioner outage; After the refrigerant leak detector does not detect coolant leakage, can be to carry out subsequent operation.
Under the refrigerating operaton pattern; At first magnetic valve energising, electric expansion valve is opened to the setting step number, after the compressor of refrigerant from off-premises station discharged; Arrive outdoor heat exchanger through the cross valve in the off-premises station and carry out condensation; After the electric expansion valve throttling, arrive the indoor heat exchanger evaporation through the pipeline that is connected between indoor heat exchanger and the outdoor heat exchanger, flow back to compressor through pipeline at last; Be in operation after the refrigerant leak detector detects indoor set generation coolant leakage; Electric expansion valve reverse rotation immediately is to blocking the refrigerant circulation; The indoor fan motor moves with superpower wind; After this moment, refrigerant was discharged from compressor, hoard to outdoor heat exchanger through cross valve, the pipeline and the refrigerant in the indoor set that between indoor heat exchanger and outdoor heat exchanger, are connected flow back to compressor behind magnetic valve; After the measured value of low pressure sensor reaches setting value; Magnetic 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; Behind forced-ventilated after a while, whole air-conditioner outage; After air-conditioner re-powers, still show failure code, the user can't start shooting, and need can normally be moved after to the program release by the maintenance personal.
Under the heating operation pattern; At first magnetic valve energising, electric expansion valve is opened to the setting step number, after the compressor of refrigerant from off-premises station discharged; Arrive outdoor heat exchanger through the cross valve in the off-premises station and carry out condensation; After flowing to the electric expansion valve throttling from the pipeline that is connected between indoor heat exchanger and the outdoor heat exchanger, arrive outdoor heat exchanger heat absorption evaporation, flow back to compressor through cross valve at last; It is in service after the refrigerant leak detector detects indoor set generation coolant leakage; The cross valve outage; Electric expansion valve reverse rotation immediately is to blocking the refrigerant circulation, and the indoor fan motor moves with superpower wind, after this moment, refrigerant was discharged from compressor; Hoard to outdoor heat exchanger through cross valve, the pipeline and the refrigerant in the indoor set that between indoor heat exchanger and outdoor heat exchanger, are connected flow back to compressor behind magnetic valve; After the measured value of low pressure sensor reaches setting value; Magnetic 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; Behind 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 can normally be moved after to the program release by the maintenance personal.
Said setting value is absolute pressure 1atm, and perhaps setting value is gauge pressure 0atm.
The time of said forced-ventilated is t0, t0 >=15 second.
The utility model is through increasing low pressure sensor, refrigerant leak detector, electric expansion valve and magnetic valve; And rationally control the step number of electric expansion valve and the break-make of magnetic valve; Make and take place in the indoor set running to let more refrigerants flow back to off-premises station behind the coolant leakage as far as possible; Thereby reduce the leakage rate of flammable refrigerant in the room, air is inhaled into compression in the compressor and causes compressor damage or blast when preventing to reclaim refrigerant simultaneously, improves the security reliability of air-conditioner.
Air-conditioner in the utility model can safety the flammable refrigerant of use; Guarantee after the indoor runs into coolant leakage, can let more refrigerant flow back to off-premises station; And there is not air to be inhaled in the compressor; Reduce the coolant leakage amount in the room, reduce the risk of room internal combustion and the risk of compressor blast, ensure user's personal safety and safety of property.
The utlity model has simple and reasonable, flexible operation, high, the advantage of wide range of application of safe coefficient.
Description of drawings
Fig. 1 is the structural representation of the utility model first embodiment.
Fig. 2 is the structural representation of the utility model second embodiment.
Fig. 3 is the control method flow chart of the utility model.
Among the figure: 100 is indoor set, and 101 is the refrigerant leak detector, and 102 is indoor heat exchanger, and 103 is the indoor fan motor; 200 is off-premises station, and 201 is compressor, and 202 is cross valve, and 203 is the outdoor fan motor; 204 is outdoor heat exchanger, and 205 is restricting element, and 206 is the liquid valve, and 207 is air valve; 208 is magnetic valve, and 209 is low pressure sensor, and 300 is control assembly.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
First embodiment
Referring to Fig. 1 and Fig. 3; This uses the air-conditioner of flammable refrigerant; The off-premises station 200 that comprises control assembly 300, is positioned at the indoor set 100 of indoor and is positioned at the outside; Indoor set 100 and off-premises station 200 connect into closed circuit through pipeline, and indoor set 100 comprises indoor heat exchanger 102, and off-premises station 200 comprises outdoor heat exchanger 204 and compressor 201; The pipeline that is connected between indoor heat exchanger 102 and the outdoor heat exchanger 204 is provided with the restricting element 205 of control cold medium flux and the magnetic valve 208 of control piper break-make; Magnetic valve 208 is electrically connected with control assembly 300, and the break-make of magnetic valve 209 provides signal by control assembly 300 according to the duty of air-conditioning, magnetic valve 209 conducting when energising; Pipeline between compressor 201 and the indoor heat exchanger 102 is provided with the low pressure sensor 209 that is used to detect compressor air suction pressure more than, and low pressure sensor 209 is electrically connected with control assembly 300; Be provided with the refrigerant leak detector 101 that is used to detect refrigerant concentration near the electric-controlled box of indoor set 100 and/or near the air outlet, refrigerant leak detector 101 is electrically connected with control assembly 300 through holding wire.Restricting element 205 is arranged on indoor or outside with magnetic valve 208.
In the present embodiment; Restricting element 205 is arranged on the outside with magnetic valve 208; Restricting element 205 is an electric expansion valve; Electric expansion valve is electrically connected with control assembly 300, electric expansion valve open step number according to the suction temperature of compressor 201 and evaporating temperature decision, the initial opening of electric expansion valve determines according to outdoor temperature.The aperture of electric expansion valve is the 0-500 step, and refrigerant can not circulate during 0 step, and cold medium flux is maximum during 500 steps.
The break-make of magnetic valve 208 provides signal, conducting during energising by control assembly 300 according to the duty of air-conditioning.Low pressure sensor 209 lines are connected to electric-controlled parts, cut off the power supply with magnetic valve through the pressure of inspiration(Pi) control compressor that detects compressor, prevent that air is inhaled in the compressor to compress.
Pipeline between indoor set 100 and the off-premises station 200 is provided with liquid valve 206 and air valve 207, and low pressure sensor 209 is arranged on the pipeline between compressor 201 and the air valve 207.
The refrigerant that uses in the air-conditioner is flammable refrigerant.
In the present embodiment, off-premises station 200 comprises compressor 201, cross valve 202, outdoor heat exchanger 204, electric expansion valve, liquid valve 206, air valve 207, magnetic valve 208, the low pressure sensor 209 that is connected successively by pipeline.Off-premises station 200 is connected with indoor heat exchanger 102 in the indoor set 100 through liquid valve 206 and air valve 207.
Be provided with the refrigerant leak detector 101 and indoor fan motor 103 that is used to detect the R290 refrigerant at indoor heat exchanger 102 near near electric-controlled box.
Under the refrigerating operaton pattern; At first magnetic valve 208 energisings, electric expansion valve is opened to the setting step number, after the compressor 201 of refrigerant from off-premises station 200 discharged; Arrive outdoor heat exchanger 204 through the cross valve in the off-premises station 200 202 and carry out condensation; After the electric expansion valve throttling, arrive indoor heat exchanger 102 evaporations through the pipeline that is connected between indoor heat exchanger 102 and the outdoor heat exchanger 204, flow back to compressor 201 through pipeline at last; Be in operation after refrigerant leak detector 101 detects indoor set 100 generation coolant leakages; Electric expansion valve reverse rotation immediately is to blocking the refrigerant circulation; Like electric expansion valve reverse rotation immediately-520 step blocking-up refrigerant circulation or the like; Indoor fan motor 103 moves with superpower wind; After this moment, refrigerant was discharged from compressor 201, hoard to outdoor heat exchanger 204 through cross valve 202, the pipeline and the refrigerant in the indoor set 100 that between indoor heat exchanger 102 and outdoor heat exchanger 204, are connected flow back to compressor 201 behind magnetic valve 208; After the measured value of low pressure sensor 209 reaches setting value; Magnetic valve 208, compressor 201 and 203 outages 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 indoor fan motor 103 continues to run up at this moment; Behind forced-ventilated after a while, whole air-conditioner outage; After air-conditioner re-powers, still show failure code, the user can't start shooting, and need can normally be moved after to the program release by the maintenance personal.Said setting value is absolute pressure 1atm, and perhaps setting value is gauge pressure 0atm.
Under the heating operation pattern; At first magnetic valve 208 energisings, electric expansion valve is opened to the setting step number, after the compressor 201 of refrigerant from off-premises station 200 discharged; Arrive outdoor heat exchanger 204 through the cross valve in the off-premises station 200 202 and carry out condensation; After flowing to the electric expansion valve throttling from the pipeline that is connected between indoor heat exchanger 102 and the outdoor heat exchanger 204, arrive outdoor heat exchanger 204 heat absorption evaporations, flow back to compressor 201 through cross valve 202 at last; It is in service after refrigerant leak detector 101 detects indoor set 100 generation coolant leakages; Cross valve 202 outages; Electric expansion valve reverse rotation immediately is to blocking the refrigerant circulation, and indoor fan motor 103 moves with superpower wind, after this moment, refrigerant was discharged from compressor 201; Hoard to outdoor heat exchanger 204 through cross valve 202, the pipeline and the refrigerant in the indoor set 100 that between indoor heat exchanger 102 and outdoor heat exchanger 204, are connected flow back to compressor 201 behind magnetic valve 208; After the measured value of low pressure sensor 209 reaches setting value; Magnetic valve 208, compressor 201 and 203 outages 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 indoor fan motor 103 continues to run up at this moment; Behind 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 can normally be moved after to the program release by the maintenance personal.Said setting value is absolute pressure 1atm, and perhaps setting value is gauge pressure 0atm.
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 the result is fed back to control assembly 300.When refrigerant leak detector 101 detects system coolant leakage is arranged; Then air-conditioner does not process the instruction that receives, and air-conditioner shows failure code and buzzer warning, and the indoor fan motor 103 superpower wind runnings of air-conditioner; Behind forced-ventilated after a while, whole air-conditioner cuts off the power supply again; After refrigerant leak detector 101 does not detect coolant leakage, can be to carry out subsequent operation.The time of forced-ventilated is t0, t0 >=15 second.Here, can be 60 seconds with the time set of forced-ventilated.
When air-conditioner during in the refrigerating operaton pattern; At first switch on to electric expansion valve and magnetic valve 208 by control assembly 300; It is in service when refrigerant leak detector 101 detects indoor set leakage refrigerant; Electric expansion valve reverse rotation immediately is to blocking the refrigerant circulation, and indoor fan motor 103 is with superpower wind operation simultaneously.After the measured value of low pressure sensor 209 reaches gauge pressure and is 0atm, magnetic valve 208, compressor 201 and 203 outages of outdoor fan motor, the display board of air-conditioner shows failure code, buzzer warning.At this moment, indoor fan motor 103 continues to run up; Behind forced-ventilated after a while, whole air-conditioner outage; After air-conditioner re-powers, still show failure code, the user can't start shooting, and need can normally be moved after to the program release by the maintenance personal.Can the time t0 of forced-ventilated be set at 30 seconds here.
When air-conditioner during in the heating operation pattern; At first control assembly 300 is to electric expansion valve and magnetic valve 208 energisings; It is in service after refrigerant leak detector 101 detects indoor set leakage refrigerant; Cross valve 202 outages, electric expansion valve reverse rotation immediately is to blocking the refrigerant circulation, and indoor fan motor 103 is with superpower wind operation simultaneously.After low pressure sensor 209 measured values reach gauge pressure and are 0atm, magnetic valve 208, compressor 201 and outdoor motor 203 outages, the display board of air-conditioner shows failure code, buzzer warning.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; Behind 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 can normally be moved after to the program release by the maintenance personal.Can the time t0 of forced-ventilated be set at 30 seconds here.
Second embodiment
Referring to Fig. 2-Fig. 3, the magnetic valve 208 in the present embodiment is arranged on the indoor with electric expansion valve.
All the other are not stated part and see first embodiment, no longer repeat.
Above-mentioned listed concrete implementation is nonrestrictive, and to one skilled in the art, in not departing from the utility model scope, various improvement and the variation carried out all belong to the protection domain of the utility model.
Claims (5)
1. air-conditioner that uses flammable refrigerant; The off-premises station (200) that comprises control assembly (300), is positioned at the indoor set (100) of indoor and is positioned at the outside; Indoor set (100) connects into closed circuit with off-premises station (200) through pipeline; Indoor set (100) comprises indoor heat exchanger (102); Off-premises station (200) comprises outdoor heat exchanger (204) and compressor (201), and the pipeline that is connected between indoor heat exchanger (102) and the outdoor heat exchanger (204) is provided with the magnetic valve (208) of orifice union (205) and control piper break-make, and magnetic valve (208) is electrically connected with control assembly (300); The break-make of magnetic valve (209) provides signal by control assembly (300) according to the duty of air-conditioning; Magnetic valve (209) conducting when energising is characterized in that the pipeline between compressor (201) and the indoor heat exchanger (102) is provided with more than one low pressure sensor (209), and low pressure sensor (209) is electrically connected with control assembly (300); Be provided with the refrigerant leak detector (101) that is used to detect refrigerant concentration near the electric-controlled box of indoor set (100) and/or near the air outlet, refrigerant leak detector (101) is electrically connected with control assembly (300) through holding wire.
2. the air-conditioner of the flammable refrigerant of use according to claim 1; It is characterized in that the pipeline between said indoor set (100) and the off-premises station (200) is provided with liquid valve (206) and air valve (207), low pressure sensor (209) is arranged on the pipeline between compressor (201) and the air valve (207).
3. the air-conditioner of the flammable refrigerant of use according to claim 1 is characterized in that said orifice union (205) and magnetic valve (208) are arranged on indoor or outside.
4. the air-conditioner of the flammable refrigerant of use according to claim 3; It is characterized in that said orifice union (205) is an electric expansion valve; Electric expansion valve is electrically connected with control assembly (300); Electric expansion valve open step number according to the suction temperature of compressor (201) and evaporating temperature decision, the initial opening of electric expansion valve determines according to outdoor temperature.
5. the air-conditioner of the flammable refrigerant of use according to claim 1 is characterized in that the refrigerant that uses in the said air-conditioner is flammable refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202478876U CN202188563U (en) | 2011-07-14 | 2011-07-14 | Air conditioner using a flammable secondary refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202478876U CN202188563U (en) | 2011-07-14 | 2011-07-14 | Air conditioner using a flammable secondary refrigerant |
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| Publication Number | Publication Date |
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| CN202188563U true CN202188563U (en) | 2012-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202478876U Withdrawn - After Issue CN202188563U (en) | 2011-07-14 | 2011-07-14 | Air conditioner using a flammable secondary refrigerant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269447A (en) * | 2011-07-14 | 2011-12-07 | 广东美的电器股份有限公司 | Air conditioner using combustible refrigerant, and control method of air conditioner |
| EP3260791A4 (en) * | 2015-02-18 | 2018-03-28 | Daikin Industries, Ltd. | Air conditioning system |
| CN109269011A (en) * | 2018-09-11 | 2019-01-25 | 奥克斯空调股份有限公司 | A kind of air conditioner |
| CN109959082A (en) * | 2019-04-15 | 2019-07-02 | 广东美的制冷设备有限公司 | Conditioner and automatically controlled case assembly |
| US11181303B2 (en) * | 2016-11-22 | 2021-11-23 | Mitsubishi Electric Corporation | Air-conditioning apparatus and air-conditioning system |
-
2011
- 2011-07-14 CN CN2011202478876U patent/CN202188563U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269447A (en) * | 2011-07-14 | 2011-12-07 | 广东美的电器股份有限公司 | Air conditioner using combustible refrigerant, and control method of air conditioner |
| EP3260791A4 (en) * | 2015-02-18 | 2018-03-28 | Daikin Industries, Ltd. | Air conditioning system |
| AU2016221001B2 (en) * | 2015-02-18 | 2018-11-01 | Daikin Industries, Ltd. | Air conditioning system |
| US10488072B2 (en) | 2015-02-18 | 2019-11-26 | Daikin Industries, Ltd. | Air conditioning system with leak protection control |
| US11181303B2 (en) * | 2016-11-22 | 2021-11-23 | Mitsubishi Electric Corporation | Air-conditioning apparatus and air-conditioning system |
| CN109269011A (en) * | 2018-09-11 | 2019-01-25 | 奥克斯空调股份有限公司 | A kind of air conditioner |
| CN109269011B (en) * | 2018-09-11 | 2021-09-21 | 奥克斯空调股份有限公司 | Air conditioner |
| CN109959082A (en) * | 2019-04-15 | 2019-07-02 | 广东美的制冷设备有限公司 | Conditioner and automatically controlled case assembly |
| CN109959082B (en) * | 2019-04-15 | 2023-10-24 | 广东美的制冷设备有限公司 | Air conditioning device and electric control box assembly |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131202 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: Midea Group Co., Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120411 Effective date of abandoning: 20140101 |
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| RGAV | Abandon patent right to avoid regrant |