CN205279347U - Can detect air conditioning system of trouble - Google Patents
Can detect air conditioning system of trouble Download PDFInfo
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- CN205279347U CN205279347U CN201521088500.1U CN201521088500U CN205279347U CN 205279347 U CN205279347 U CN 205279347U CN 201521088500 U CN201521088500 U CN 201521088500U CN 205279347 U CN205279347 U CN 205279347U
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Abstract
The utility model provides a can detect air conditioning system of trouble, its include compressor (1), with high -pressure pipeline (2) that compressor high -pressure exhaust end (1A) is connected and with compressor low pressure low -pressure pipeline (3) that end (1B) is connected of breathing in, compressor (1) still include the middling pressure breathe in end (1C) and with this middling pressure pipeline (4) that the end links to each other of breathing in, middling pressure pipeline (4) respectively with the high pressure pipeline (2) and low -pressure pipeline (3) are connected, and all be provided with temperature detecting element on high pressure pipeline (2), middling pressure pipeline (4) and low -pressure pipeline (3). Through the utility model discloses 1. Can accurate detect out the pipeline and/or the solenoid valve that break down among the air conditioning system, the system that has prevented effectively can't reach the emergence of the condition of appointed efficiency owing to the trouble, 2. Can also make things convenient for maintainer to investigate the trouble as early as possible in time reminds maintenance.
Description
Technical field
This utility model belongs to air-conditioning technical field, is specifically related to a kind of heat pump with variable conpacitance compressor, particularly relates to a kind of air conditioning system that can detect fault.
Background technology
In existing patent CN204239247U and CN104632581A, electromagnetic valve 17 and electromagnetic valve 18 are used for switching compressor capacity output. But when above-mentioned compressor is applied to heat pump, if electromagnetic valve 17 or electromagnetic valve 18 break down, then compressor cannot realize the change of capacity smoothly, produce to have a strong impact on to the control of heat pump, cannot be precisely controlled according to controlling function, in some instances it may even be possible to be unable to reach the setting requirement of user.
Being unable to reach, owing to air conditioner heat pump system of the prior art exists to result in owing to electromagnetic valve and/or associated pipe break down, the technical problem specifying effect, therefore this utility model research design has a kind of air conditioning system that can detect fault.
Utility model content
Therefore, the technical problems to be solved in the utility model is in that overcoming air conditioner heat pump system of the prior art to exist causes that owing to electromagnetic valve and/or associated pipe break down system produces to be unable to reach the defect specifying effect, thus providing a kind of air conditioning system that can detect fault.
This utility model also provides for a kind of air conditioning system that can detect fault, it includes the pressure duct that compressor is connected and the low pressure line being connected with described compressor low pressure air suction end with described compressor high pressure gas end, described compressor also includes middle pressure suction end and the middle pressure pipe road being connected with pressure suction end in this, medium pressure pipeline is connected with described pressure duct and described low pressure line respectively, and is provided with detector unit on described pressure duct, middle pressure pipe road and low pressure line.
Preferably, medium pressure pipeline presses one end of suction end to be branched off into the first branch road and the second branch road in away from described compressor, and is connected by described first branch road between medium pressure pipeline with described pressure duct, is connected by described second branch road between medium pressure pipeline and described low pressure line.
Preferably, being arranged at the detector unit on described pressure duct is aerofluxus temperature-sensitive bag, and described aerofluxus temperature-sensitive bag is bigger than the distance that the first branch road is connected to described pressure duct place and compressor high pressure gas end with the distance of compressor high pressure gas end.
Preferably, being arranged at the detector unit on described low pressure line is air-breathing temperature-sensitive bag, and described air-breathing temperature-sensitive bag is disposed in proximity on the position of described compressor low pressure air suction end.
Preferably, being arranged at the detector unit on medium pressure pipeline is middle pressure sensitivity thermometer bulb, and medium pressure temperature-sensitive bag is disposed in proximity to press in described compressor on the position of suction end.
Preferably, when having the first branch road and the second branch road, described first branch road is provided with the first electromagnetic valve, and is provided with the second electromagnetic valve on described second branch road.
Preferably, described compressor also includes pressure suction end in second, presses suction end to be connected to the flash vessel being arranged in Air-conditioning Cycle loop by air injection enthalpy-increasing pipeline in described second.
Preferably, described air injection enthalpy-increasing pipeline is additionally provided with spray enthalpy electric expansion valve or electromagnetic valve.
Preferably, described air injection enthalpy-increasing pipeline is additionally provided with near one end of described flash vessel flash vessel temperature-sensitive bag, and is pressing one end of suction end to be additionally provided with spray enthalpy temperature-sensitive bag in described compressor second.
The air conditioning system that can detect fault that this utility model provides has the advantages that
1. can accurately detecting the pipeline and/or electromagnetic valve that break down in air conditioning system, the system that effectively prevent is unable to reach the generation of the situation specifying effect due to fault;
2. the personnel that can maintain easily investigate fault as early as possible and remind maintenance in time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air conditioning system that can detect fault of the present utility model.
In figure, accompanying drawing labelling is expressed as:
1 compressor, 1A high pressure gas end, 1B low pressure air suction end, 1C presses suction end, 1D second presses suction end, 2 pressure ducts, 3 low pressure lines, pressure pipe road in 4, 5 first branch roads, 6 second branch roads, 7 aerofluxus temperature-sensitive bags, 8 air-breathing temperature-sensitive bags, pressure sensitivity thermometer bulb in 9, 10 first electromagnetic valves, 11 second electromagnetic valves, 12 air injection enthalpy-increasing pipelines, 13 flash vessels, 14 spray enthalpy electric expansion valve or electromagnetic valves, 15 flash vessel temperature-sensitive bags, 16 spray enthalpy temperature-sensitive bags, 17 cross valves, 18 condensers, 19 vaporizers, 20 first expansion valves, 21 second expansion valves.
Detailed description of the invention
As shown in Figure 1, this utility model provides a kind of air conditioning system that can detect fault, it includes compressor 1 and the described compressor high pressure gas end 1A pressure duct 2 being connected and the low pressure line 3 being connected with described compressor low pressure air suction end 1B, described compressor 1 also includes middle pressure suction end 1C and the middle pressure pipe road 4 being connected with pressure suction end in this, medium pressure pipeline 4 is connected with described pressure duct 2 and described low pressure line 3 respectively, and is provided with detector unit on described pressure duct 2, middle pressure pipe road 4 and low pressure line 3.
By being arranged on high pressure, middle pressure and low pressure line and be respectively provided with detector unit can detect respective temperature value in time, can pass through to analyze respective change and carry out size each other to compare, judge pressure pipe road and pressure duct and/or and described low pressure line between connecting line and/or be arranged at whether the electromagnetic valve on this connecting line breaks down, thus the system that is effectively prevented is unable to reach the generation of situation specifying effect due to fault; And also the personnel that can maintain easily investigate fault as early as possible and remind maintenance in time.
Preferably, medium pressure pipeline 4 presses one end of suction end 1C to be branched off into the first branch road 5 and the second branch road 6 in away from described compressor, and is connected by described first branch road 5 between medium pressure pipeline 4 with described pressure duct 2, is connected by described second branch road 6 between medium pressure pipeline 4 and described low pressure line 3. Effectively middle pressure pipe road respectively and can be connected together between pressure duct and low pressure line by arranging the first and second above-mentioned branch roads, it is possible to when air conditioning system needs to run larger displacement, connect the first branch road; When needs run smaller displacement, connect the second branch road, thus reaching the purpose realizing running under different cold-producing medium discharge capacity demand.
Preferably, the detector unit being arranged on described pressure duct 2 is aerofluxus temperature-sensitive bag 7, and described aerofluxus temperature-sensitive bag 7 and the distance of compressor high pressure gas end 1A to be connected to described pressure duct 2 place than the first branch road 5 big with the distance of compressor high pressure gas end (1A), (i.e. the first branch road 5 be connected to described pressure duct 2 place (link) be arranged between described aerofluxus temperature-sensitive bag 7 and described compressor high pressure gas end 11). This is preferred kind and the embodiment of detector unit on pressure duct, and the first branch road is connected to described pressure duct place is arranged between described aerofluxus temperature-sensitive bag and described compressor high pressure gas end, it is to ensure that aerofluxus temperature-sensitive is surrounded by enough spaces and is configured, and is that one preferably arranges position. Another kind of it is preferable that, the position of temperature-sensitive bag 7, close proximity to compressor high pressure gas end 1A, so can detect the temperature of high pressure gas end more exactly; And the connection place of the first branch road 5 and pressure duct 2 should, as far as possible away from 1A, so can come in avoid to vibrate so that the excessive problem causing its fracture of pipeline stress.
Preferably, the detector unit being arranged on described low pressure line 3 is air-breathing temperature-sensitive bag 8, and described air-breathing temperature-sensitive bag 8 is disposed in proximity on the position of described compressor low pressure air suction end 1B. This is preferred kind and the embodiment of detector unit on low pressure line, and is disposed at above-mentioned position and can detect the temperature value at low pressure air suction end place exactly.
Preferably, being arranged at the detector unit on medium pressure pipeline 4 is middle pressure sensitivity thermometer bulb 9, and described air-breathing temperature-sensitive bag 9 is disposed in proximity in described compressor to press on the position of suction end 1C. This is preferred kind and the embodiment of detector unit on middle pressure pipe road, and is disposed at above-mentioned position and can detect the temperature value at middle pressure suction end place exactly.
Preferably, when having the first branch road 5 and the second branch road 6, described first branch road 5 is provided with the first electromagnetic valve 10, and is provided with the second electromagnetic valve 11 on described second branch road 6. Played the purpose and effect that effectively control the first branch road break-make by described first electromagnetic valve, effectively played the purpose and effect that control the second branch road break-make by described second electromagnetic valve.
Preferably, described compressor 1 also includes pressure suction end 1D in second, presses suction end 1D to be connected to, by air injection enthalpy-increasing pipeline 12, the flash vessel 13 being arranged in Air-conditioning Cycle loop in described second. Refrigerant gas after flash distillation can be imported in second in pressure suction end by arranging flash vessel and air injection enthalpy-increasing pipeline, effectively carry out the cold-producing medium in air conditioning system increasing enthalpy effect.
Preferably, described air injection enthalpy-increasing pipeline 12 is additionally provided with spray enthalpy electric expansion valve or electromagnetic valve 14. Cold-producing medium in air injection enthalpy-increasing pipeline can expand and carry out the control of uninterrupted or break-make effectively.
Preferably, described air injection enthalpy-increasing pipeline 12 is additionally provided with near one end of described flash vessel 13 flash vessel temperature-sensitive bag 15, and is additionally provided with spray enthalpy temperature-sensitive bag 16 in one end of pressure suction end 1D in described compressor second. So by flash vessel temperature-sensitive bag flash vessel can be exitted into the temperature value measurement of cold-producing medium in air injection enthalpy-increasing pipeline, and the refrigerant temperature value after overspray enthalpy electric expansion valve or electromagnetic valve can be measured by spraying enthalpy temperature-sensitive bag.
This utility model also provides for the judgement control method of a kind of air conditioning system fault, and it uses aforesaid air conditioning system, carries out accurately judging and executive control operation when its fault is occurred. By use aforesaid air conditioning system can interpolate that out middle pressure pipe road and pressure duct and/or and described low pressure line between connecting line and/or be arranged at whether the electromagnetic valve on this connecting line breaks down, thus the system that is effectively prevented is unable to reach the generation of situation specifying effect due to fault; And also the personnel that can maintain easily investigate fault as early as possible and remind maintenance in time.
Preferably, utilize the temperature value that the detector unit being arranged on described pressure duct 2, middle pressure pipe road 4 and low pressure line 3 detects, analyze respective change and carry out size each other and compare, it is judged that medium pressure pipeline 4 and described pressure duct 2 and/or and described low pressure line 3 between connecting line whether break down.
Preferably, when including first branch road the 5, second branch road 6 and aerofluxus temperature-sensitive bag 7, air-breathing temperature-sensitive bag 8, middle pressure sensitivity thermometer bulb 9 and first, second electromagnetic valve 10,11 when system, temperature value respectively Td, Ts, Tm that aerofluxus temperature-sensitive bag 7, air-breathing temperature-sensitive bag 8 and middle pressure sensitivity thermometer bulb 9 detect; By respective to Td, Ts, Tm change and/or between carry out size and compare, thus judging whether first, second electromagnetic valve 10,11 breaks down.
Preferably, when the second electromagnetic valve 11 close, the first electromagnetic valve 10 open time, if Td=Tm > Ts, then it represents that the first electromagnetic valve 10 is normal; (due to the first electromagnetic valve 10 connect, the second electromagnetic valve 11 cuts out, first branch road 5 turns on, the second branch road 6 is closed, the cold-producing medium of gas exhaust piping route from first, pressure pipe road is directed in compressor and presses suction end, then Tm=Td, and owing to exhaust end line temperature is more than suction end temperature, then Td > Ts, then Tm=Td > Ts, and then draw the judged result of the first electromagnetic valve normally);
After running certain time interval t (it is so to allow system reach steady statue so that temperature-sensitive detected value does not fluctuate, lower same, such as 10 seconds), close the first electromagnetic valve 10, open the second electromagnetic valve 11, if Td > Tm=Ts, then it represents that the second electromagnetic valve 11 is normal; (due to the first electromagnetic valve 10 close, the second electromagnetic valve 11 is connected, first branch road 5 is closed, the second branch road 6 turns on, compressor is pressed the cold-producing medium therefrom pressure pipe road 4 of suction end 1C be directed into compressor low pressure air suction end 1B via the second branch road 6 and low pressure line 3, then Tm=Ts, and owing to exhaust end line temperature is more than suction end temperature, then Td > Ts, then Td > Tm=Ts, and then draw the judged result of the second electromagnetic valve normally);
Rerun after certain time interval t, closing the second electromagnetic valve 11, opening the first electromagnetic valve 10, if returning to Td=Tm Ts, then it represents that the first electromagnetic valve 10 is normal. (due to the first electromagnetic valve 10 connect, the second electromagnetic valve 11 cuts out, first branch road 5 turns on, the second branch road 6 is closed, the cold-producing medium of gas exhaust piping is directed into compressor from the first branch road 5 by middle pressure pipe road 4 and presses suction end 1C, then Tm=Td, and owing to exhaust end line temperature is more than suction end temperature, then Td > Ts, then Tm=Td > Ts, and then draw the judged result of the first electromagnetic valve normally);
This is to judge that first, second electromagnetic valve specifically judges step normally.
Preferably, when above-mentioned Tm is invariable, then show that the first electromagnetic valve 10 and the second electromagnetic valve 11 all break down and all cannot open. Illustrate that when Tm is invariable first branch road and the second branch road all flow into pressure pipe road in this without corresponding cold-producing medium, so that middle pressure pipe road cold-producing medium is not changed in, and then can show that the first electromagnetic valve 10 and the second electromagnetic valve 11 all break down and all cannot open.
Preferably, when above-mentioned Tm changes, it was shown that be up to 1 electromagnetic valve and break down. Namely electromagnetic valve number��1 broken down: including when being 0, namely the equal fault-free of electromagnetic valve, properly functioning; With during for 1, have an electromagnetic valve to break down, and if when having 2 electromagnetic valves all to break down Tm be not changed in (situation for a section above), thus drawing and being up to the discriminatory analysis result that 1 electromagnetic valve breaks down.
Preferably, after running certain time interval t (such as 10 seconds), close the first electromagnetic valve 10, open the second electromagnetic valve 11, if Td > Tm does not occur, then it represents that the second electromagnetic valve 11 breaks down and cannot open; (due to the first electromagnetic valve 10 close, the second electromagnetic valve 11 is connected, if when the second electromagnetic valve does not break down, the first branch road 5 is closed, the second branch road 6 turns on, compressor is pressed the cold-producing medium therefrom pressure pipe road 4 of suction end 1C be directed into compressor low pressure air suction end 1B via the second branch road 6 and low pressure line 3, then Tm=Ts in theory, and owing to exhaust end line temperature is more than suction end temperature, then Td > Ts, then Td > Tm=Ts; And if Td > Tm does not actually occur, then represent that the second branch road 6 is not turned on, compressor is pressed the cold-producing medium of suction end 1C not therefrom pressure pipe road 4 be directed into compressor low pressure air suction end 1B via the second branch road 6 and low pressure line 3, thus showing that the second electromagnetic valve 11 breaks down the judged result that cannot open);
When, after the certain time interval t that reruns, closing the second electromagnetic valve 11, open the first electromagnetic valve 10, if Tm > Ts does not occur, then it represents that the first electromagnetic valve 10 breaks down and cannot open. (due to the first electromagnetic valve 10 connect, the second electromagnetic valve 11 cuts out, if when the first electromagnetic valve does not break down, the first branch road 5 turns on, the second branch road 6 is closed, the cold-producing medium of gas exhaust piping route from first, pressure pipe road is directed in compressor and presses suction end, then Tm=Td in theory, and owing to exhaust end line temperature is more than suction end temperature, then Td > Ts, then Td=Tm > Ts; And if Tm > Ts does not actually occur, then represent that the first branch road 5 is not turned on, the cold-producing medium of gas exhaust piping does not route from first, pressure pipe road is directed in compressor pressure suction end, thus showing that the first electromagnetic valve 10 breaks down the judged result that cannot open).
This be judge first, second electromagnetic valve abnormal specifically judge step.
Preferably, control program module according to above-mentioned determination methods establishment, carry out solenoid valve failure judgement, and show failure code accordingly, keep in repair targetedly. It is thus possible to the personnel that maintain easily investigate fault as early as possible reminds maintenance in time.
Of the present utility model preferred embodiment is described below
As shown in Figure 1, air conditioner heat pump system of the present utility model increases a middle pressure sensitivity thermometer bulb 9 (middle pressure temperature value Tm), compares with air-breathing temperature-sensitive bag 8 (low pressure air suction end temperature value Ts) and aerofluxus temperature-sensitive bag 7 (high pressure gas end temperature value Td) to facilitate; Under normal circumstances, the electromagnetic valve used in figure below is power-off closed type, when compressor is properly functioning, checks solenoid valve failure as steps described below:
1) when the second electromagnetic valve 11 close, the first electromagnetic valve 10 open time, be Td=Tm > Ts under normal circumstances;
2) cross an interval t (such as 10 seconds), close the first electromagnetic valve 11, open the second electromagnetic valve 12, be Td > Tm=Ts under normal circumstances;
3) after an interval t, close the second electromagnetic valve 11, open the first electromagnetic valve 10, return to Td=Tm > Ts under normal circumstances;
4) when above-mentioned Tm is invariable, electromagnetic valve 1 and electromagnetic valve 2 all break down and cannot open;
5) when above-mentioned Tm changes, it is up to 1 electromagnetic valve and breaks down:
5.1) step 2) in Td > Tm does not occur, then the second electromagnetic valve 11 breaks down and cannot open;
5.2) step 3) in Tm > Ts does not occur, then the first electromagnetic valve 10 breaks down and cannot open.
Controlling program module according to above establishment, unit realizes solenoid valve failure diagnostic function, and shows failure code accordingly, maintains easily maintenance.
Those skilled in the art will readily understand, under the premise do not conflicted, above-mentioned each advantageous manner can freely combine, superposition.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model. The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the premise without departing from this utility model know-why; can also making some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.
Claims (9)
1. the air conditioning system that can detect fault, it is characterized in that: include compressor (1), the pressure duct (2) being connected with described compressor high pressure gas end (1A) and the low pressure line (3) being connected with described compressor low pressure air suction end (1B), described compressor (1) also includes middle pressure suction end (1C) and the middle pressure pipe road (4) being connected with pressure suction end in this, medium pressure pipeline (4) is connected with described pressure duct (2) and described low pressure line (3) respectively, and in described pressure duct (2), middle pressure pipe road (4) and low pressure line (3) are provided with detector unit.
2. air conditioning system according to claim 1, it is characterized in that: medium pressure pipeline (4) presses one end of suction end (1C) to be branched off into the first branch road (5) and the second branch road (6) in away from described compressor, and is connected by described first branch road (5) between medium pressure pipeline (4) with described pressure duct (2), is connected by described second branch road (6) between medium pressure pipeline (4) and described low pressure line (3).
3. according to the air conditioning system one of claim 1-2 Suo Shu, it is characterized in that: the detector unit being arranged on described pressure duct (2) is aerofluxus temperature-sensitive bag (7), and described aerofluxus temperature-sensitive bag (7) is bigger than the distance that the first branch road (5) is connected to described pressure duct (2) place and compressor high pressure gas end (1A) with the distance of compressor high pressure gas end (1A).
4. according to the air conditioning system one of claim 1-2 Suo Shu, it is characterized in that: the detector unit being arranged on described low pressure line (3) is air-breathing temperature-sensitive bag (8), and described air-breathing temperature-sensitive bag (8) is disposed in proximity on the position of described compressor low pressure air suction end (1B).
5. according to the air conditioning system one of claim 1-2 Suo Shu, it is characterized in that: the detector unit being arranged on medium pressure pipeline (4) is middle pressure sensitivity thermometer bulb (9), and medium pressure temperature-sensitive bag (9) is disposed in proximity in described compressor to press on the position of suction end (1C).
6. air conditioning system according to claim 2, it is characterized in that: when having the first branch road (5) and the second branch road (6), described first branch road (5) is provided with the first electromagnetic valve (10), and is provided with the second electromagnetic valve (11) on described second branch road (6).
7. according to the air conditioning system one of claim 1-2 Suo Shu, it is characterized in that: described compressor (1) also includes pressing in second suction end (1D), in described second, press suction end (1D) to be connected to the flash vessel (13) being arranged in Air-conditioning Cycle loop by air injection enthalpy-increasing pipeline (12).
8. air conditioning system according to claim 7, it is characterised in that: described air injection enthalpy-increasing pipeline (12) is additionally provided with spray enthalpy electric expansion valve or electromagnetic valve (14).
9. air conditioning system according to claim 7, it is characterized in that: be additionally provided with flash vessel temperature-sensitive bag (15) in the upper one end near described flash vessel (13) of described air injection enthalpy-increasing pipeline (12), and be additionally provided with spray enthalpy temperature-sensitive bag (16) in one end of pressure suction end (1D) in described in compressor second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088500.1U CN205279347U (en) | 2015-12-22 | 2015-12-22 | Can detect air conditioning system of trouble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088500.1U CN205279347U (en) | 2015-12-22 | 2015-12-22 | Can detect air conditioning system of trouble |
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| Publication Number | Publication Date |
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| CN205279347U true CN205279347U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521088500.1U Expired - Fee Related CN205279347U (en) | 2015-12-22 | 2015-12-22 | Can detect air conditioning system of trouble |
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| CN (1) | CN205279347U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485848A (en) * | 2015-12-22 | 2016-04-13 | 珠海格力电器股份有限公司 | Air conditioning system capable of detecting fault and fault diagnosis control method |
| CN107084501A (en) * | 2017-05-19 | 2017-08-22 | 广东志高暖通设备股份有限公司 | A kind of control method of air injection enthalpy-increasing air-conditioning system |
| CN107525218A (en) * | 2017-07-27 | 2017-12-29 | 奥克斯空调股份有限公司 | A kind of self-adaptation control method and system of A/C pressure switch wiring |
| CN110529975A (en) * | 2019-08-16 | 2019-12-03 | 特灵空调系统(中国)有限公司 | Method for diagnosing faults, device, machine readable storage medium |
-
2015
- 2015-12-22 CN CN201521088500.1U patent/CN205279347U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485848A (en) * | 2015-12-22 | 2016-04-13 | 珠海格力电器股份有限公司 | Air conditioning system capable of detecting fault and fault diagnosis control method |
| CN107084501A (en) * | 2017-05-19 | 2017-08-22 | 广东志高暖通设备股份有限公司 | A kind of control method of air injection enthalpy-increasing air-conditioning system |
| CN107084501B (en) * | 2017-05-19 | 2019-07-09 | 广东志高暖通设备股份有限公司 | A kind of control method of air injection enthalpy-increasing air-conditioning system |
| CN107525218A (en) * | 2017-07-27 | 2017-12-29 | 奥克斯空调股份有限公司 | A kind of self-adaptation control method and system of A/C pressure switch wiring |
| CN107525218B (en) * | 2017-07-27 | 2019-10-18 | 奥克斯空调股份有限公司 | A kind of self-adaptation control method and system of A/C pressure switch wiring |
| CN110529975A (en) * | 2019-08-16 | 2019-12-03 | 特灵空调系统(中国)有限公司 | Method for diagnosing faults, device, machine readable storage medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20211222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |