CN1737448A - Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method - Google Patents
Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method Download PDFInfo
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- CN1737448A CN1737448A CN 200510035352 CN200510035352A CN1737448A CN 1737448 A CN1737448 A CN 1737448A CN 200510035352 CN200510035352 CN 200510035352 CN 200510035352 A CN200510035352 A CN 200510035352A CN 1737448 A CN1737448 A CN 1737448A
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- heat exchanger
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- refrigerant
- producing medium
- indoor heat
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 26
- 238000003745 diagnosis Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 9
- 238000002405 diagnostic procedure Methods 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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Abstract
The present invention relates to an air conditioner and a fault diagnosis method for the air conditioner, and more particularly, to an air conditioner having a function of diagnosing a refrigerant shortage and a system blockage fault, and a method for diagnosing a refrigerant shortage and a system blockage fault in an air conditioner. An air conditioner with a function of diagnosing the lack of refrigerant or the system blockage comprises a compressor, an outdoor heat exchanger, a throttling element, an indoor heat exchanger, a central processing unit and a refrigerant lack or system blockage diagnosing mechanism, wherein the refrigerant lack or system blockage diagnosing mechanism comprises a tube temperature sensor, an environment temperature sensor and a comparison unit, the tube temperature sensor is positioned on a refrigerant pipeline of the indoor heat exchanger, the environment temperature sensor is positioned on the windward side of the indoor heat exchanger, and the comparison unit is connected to the central processing unit.
Description
Technical field
The present invention relates to a kind of air-conditioner and a kind of air conditioner fault diagnostic method, particularly a kind ofly have that cold-producing medium lacks, an air-conditioner of system jams fault diagnosis functions and the air-conditioning inner refrigerant lacks, the system jams fault Diagnosis Method.
Background technology
Cold-producing medium lacks, system jams is one of air-conditioner common faults, and it not only can reduce the changes in temperature effect, but also delivery temperature is raise.When row's temperature is very high, also can make cold-producing medium and lubricating oil generation thermal decomposition, not only lubricating condition worsens, and causes serious accidents such as system jams, compressor copper facing, card cylinder even burning machine but also can produce impurity such as water, acid, carbon.Cold-producing medium lack or system jams after often feel that cooling rate slows down, the air outlet temperature drift is followed simultaneously that revolution electric current reduces, the discharge rate of condensate water reduces even is not had.At present, what the cold-producing medium of air-conditioner lacked or the system jams diagnostic mode generally adopts is that the method that detects compressor exhaust temperature and compressor current is simultaneously judged, also there is direct detection manifold pressure to judge whether that cold-producing medium leaks or system jams in addition, but the testing circuit complexity of these two kinds of methods, cost are also high relatively.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of can convenient and swift diagnosis whether cold-producing medium lack or the air-conditioner of system jams and a kind of cold-producing medium lacks or the system jams diagnostic method.
Technical problem to be solved by this invention is achieved by the following technical solution: a kind of tool cold-producing medium lacks or the air-conditioner of system jams diagnostic function, it comprises compressor, outdoor heat exchanger, restricting element, indoor heat exchanger and CPU, it comprises that also a cold-producing medium lacks or system jams diagnosis mechanism, this cold-producing medium lacks or system jams diagnosis mechanism comprises the warm temperature sensor of a pipe, one environment temperature sensor and a comparing unit, this is managed warm temperature sensor and is positioned on the refrigerant tubing of indoor heat exchanger, this environment temperature sensor is positioned at the indoor heat exchanger windward side, and this comparing unit is connected in CPU.
The present invention also provides a kind of air conditioner refrigerant to lack or the system jams diagnostic method, and it comprises the steps:
A. detect from compressor start and the refrigerant tubing inlet temperature T of the indoor heat exchanger after moving m minute continuously;
B. detect environment temperature T0 in the indoor heat exchanger;
C. determine refrigerant tubing inlet temperature scope T under the unfaulty conditions according to temperature T 0
1～T
2
D. by comparing unit comparison temperature T and temperature range T
1～T
2, if T1≤T≤T2 then moves normally, on the contrary, then fault exists.
Because the present invention only just can judge that by the easy detection of indoor temperature cold-producing medium lacks or system jams, need not to detect electric current, irrelevant with the specification of used compressor, method is simple and practical reliable.
Description of drawings
Fig. 1 lacks or the air-conditioner structural scheme of mechanism of system jams diagnostic function for tool cold-producing medium of the present invention;
Fig. 2 lacks for cold-producing medium of the present invention or system jams diagnostic method flow chart;
The specific embodiment
Referring to Fig. 1, a kind of tool cold-producing medium lacks or the air-conditioner of system jams diagnostic function, it comprises compressor 1, outdoor heat exchanger 2, expansion valve 3, indoor heat exchanger 4, with CPU 5, wherein, it comprises that also a cold-producing medium lacks or system jams diagnosis mechanism 6, this cold-producing medium lacks or system jams diagnosis mechanism 6 comprises the warm temperature sensor 61 of a pipe, one environment temperature sensor 62 and a comparing unit 63, this manages the refrigerant tubing porch that warm temperature sensor 61 is positioned at indoor heat exchanger 4 when freezing, this environment temperature sensor 62 is positioned at indoor heat exchanger 4 windward sides, and this comparing unit 62 is connected in CPU 5.
Because tool cold-producing medium of the present invention lacks or the air-conditioner of system jams diagnostic function only just can judge that by the easy detection of indoor temperature air conditioner refrigerant lacks or system jams, need not to detect electric current, irrelevant with the specification of used compressor, method is simple and practical reliable.
Referring to Fig. 2, a kind of air conditioner refrigerant lacks or the system jams diagnostic method, and it comprises the steps:
10. detect the refrigerant tubing inlet temperature T that compressor moves the indoor heat exchanger after m minute continuously;
20. environment temperature T0 in the detection indoor heat exchanger;
30. according to temperature T
0Determine refrigerant tubing inlet temperature scope T under the unfaulty conditions
1～T
2
40. by comparing unit comparison temperature T and temperature range T1～T2, if T1≤T≤T2 then moves normally, on the contrary, then fault exists.
Because cold-producing medium of the present invention lacks or the system jams diagnostic method only just can judge that by the easy detection of indoor temperature cold-producing medium lacks or system jams, need not to detect electric current, irrelevant with the specification of used compressor, method is simple and practical reliable.
The cold-producing medium of air-conditioner of the present invention lacks or the system jams diagnosis principle is such:
After refrigeration system obstruction or cold-producing medium lacked, low pressure reduced.During refrigeration, indoor set indoor heat exchanger conduit entrance place cold-producing medium or be in two-phase section, temperature can be represented low voltage value herein; Be in the monophase field, temperature is near environment temperature.In view of the above can be by detecting temperature near indoor heat exchanger refrigerant inlet place, and then environment temperature in the indoor heat exchanger detected, under the air-conditioner normal operating conditions, the porch temperature corresponding with ambient temperature value T0 should be between scope T1～T2, if the detected temperatures T at place, actual entry between T1～T2, shows then that system's operation is normal, and is opposite, the detected temperatures T at place, actual entry is higher or lower than the temperature range between T1～T2, then shows the system failure.Take the corresponding protection measure again, just can avoid system refrigerant to lack effectively or all kinds of faults of air-conditioner that system jams causes take place.
The present invention also has some other distortion or improvement, is positioned at other position of refrigerant tubing of indoor heat exchanger as aforementioned tube temperature temperature sensor, and above-mentioned expansion valve also can be other restricting element such as capillary.If those skilled in the art are subjected to the change or the improvement of the conspicuous unsubstantiality that inspiration of the present invention makes, all belong to the protection domain of claims of the present invention.
Claims (5)
1, a kind of tool cold-producing medium lacks or the air-conditioner of system jams diagnostic function, it comprises compressor, outdoor heat exchanger, restricting element, indoor heat exchanger and CPU, it is characterized in that, it comprises that also a cold-producing medium lacks or system jams diagnosis mechanism, this cold-producing medium lacks or system jams diagnosis mechanism comprises the warm temperature sensor of a pipe, one environment temperature sensor and a comparing unit, this is managed warm temperature sensor and is positioned on the refrigerant tubing of indoor heat exchanger, this environment temperature sensor is positioned at the indoor heat exchanger windward side, and this comparing unit is connected in CPU.
2, tool cold-producing medium according to claim 1 lacks or the air-conditioner of system jams diagnostic function, it is characterized in that the refrigerant tubing porch of indoor heat exchanger when described pipe temperature temperature sensor is positioned at refrigeration.
3, tool cold-producing medium according to claim 1 lacks or the air-conditioner of system jams diagnostic function, it is characterized in that described restricting element is an expansion valve.
4, a kind of air conditioner refrigerant lacks or the system jams diagnostic method, it is characterized in that it comprises the steps:
A. detect the refrigerant tubing inlet temperature T of indoor heat exchanger;
B. detect indoor environment temperature T0;
C. determine refrigerant tubing inlet temperature scope T1～T2 under the unfaulty conditions according to temperature T 0.
D. by comparing unit comparison temperature T and temperature range T1～T2, if T1≤T≤T2 then
Operation is normal, and on the contrary, then fault exists.
5, air conditioner refrigerant according to claim 4 lacks or the system jams diagnostic method, it is characterized in that, described T1, T2 can adjust according to the air-conditioner windscreen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510035352 CN1737448A (en) | 2005-06-20 | 2005-06-20 | Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510035352 CN1737448A (en) | 2005-06-20 | 2005-06-20 | Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1737448A true CN1737448A (en) | 2006-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510035352 Pending CN1737448A (en) | 2005-06-20 | 2005-06-20 | Air conditioner with refrigerant shortage and system blockage fault diagnosis function and diagnosis method |
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451473C (en) * | 2006-10-12 | 2009-01-14 | 珠海格力电器股份有限公司 | Air conditioner with refrigerant lack fault detection function and fault detection method |
| CN102401447A (en) * | 2011-05-24 | 2012-04-04 | 宁波奥克斯电气有限公司 | Method for processing disorderly closedown caused by partial blockage of inside pipeline of varied refrigerant volume (VRV) air-conditioning chamber |
| CN102519119A (en) * | 2011-12-04 | 2012-06-27 | Tcl空调器(中山)有限公司 | Air conditioner with fault self-diagnosis function and fault self-diagnosis method thereof |
| CN102563819A (en) * | 2011-12-05 | 2012-07-11 | Tcl空调器(中山)有限公司 | Air conditioner and troubleshooting method thereof |
| CN103235225A (en) * | 2013-04-25 | 2013-08-07 | 青岛海尔空调电子有限公司 | Method and device for detecting fluorine-deficient operation of variable frequency air conditioner |
| CN103375874A (en) * | 2012-04-23 | 2013-10-30 | 珠海格力电器股份有限公司 | Air conditioner and refrigerant circulation abnormity protection control method of air conditioner |
| CN104101051A (en) * | 2014-06-24 | 2014-10-15 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner and detection control method and device for abnormal coolant circulation of air conditioner |
| CN104110792A (en) * | 2014-05-30 | 2014-10-22 | 美的集团股份有限公司 | Control method and device for air conditioning system |
| CN104596038A (en) * | 2015-01-26 | 2015-05-06 | 广东美的制冷设备有限公司 | Method and device for controlling air conditioner |
| CN104654537A (en) * | 2015-02-02 | 2015-05-27 | 珠海格力电器股份有限公司 | Method and device for detecting lack of fluorine of air conditioner multi-split air conditioner |
| CN104913408A (en) * | 2015-06-29 | 2015-09-16 | 江苏苏净集团有限公司 | Dehumidifier |
| CN105065249A (en) * | 2015-08-31 | 2015-11-18 | 珠海格力电器股份有限公司 | Compressor performance detection device, air conditioning system with same and control method |
| CN105423484A (en) * | 2015-11-05 | 2016-03-23 | 广东爱晟电子科技有限公司 | Detection method and detection circuit for insufficiency of air conditioning refrigerant |
| CN105465968A (en) * | 2015-12-31 | 2016-04-06 | 广东美的制冷设备有限公司 | Detection method and detection device for oil blockage of air conditioning system, and air-conditioner |
| CN105588285A (en) * | 2016-01-21 | 2016-05-18 | 青岛工学院 | Air conditioner based on pipeline blocking self-diagnosis method |
| CN105864953A (en) * | 2015-01-22 | 2016-08-17 | 青岛海尔空调器有限总公司 | Air conditioner throttling part blockage detection method and device and air conditioner |
| CN106196427A (en) * | 2016-06-29 | 2016-12-07 | 珠海格力电器股份有限公司 | Control method for preventing false alarm and refrigerant shortage protection |
| CN106595137A (en) * | 2016-12-19 | 2017-04-26 | 珠海格力电器股份有限公司 | Evaporator heat exchange assembly and air conditioning unit |
| CN106839282A (en) * | 2017-01-05 | 2017-06-13 | 青岛海尔空调器有限总公司 | A kind of air-conditioner and its control method for over-heating protection and system |
| CN107062559A (en) * | 2017-05-25 | 2017-08-18 | 绵阳美菱软件技术有限公司 | A kind of air conditioner lacks fluorine detection method, device and air-conditioning system |
| CN108036462A (en) * | 2017-11-29 | 2018-05-15 | 广东美的制冷设备有限公司 | Oil of air conditioner blocks up the detection method and air conditioner of failure |
| CN108317662A (en) * | 2018-02-05 | 2018-07-24 | 广东美的制冷设备有限公司 | Fault detection method, device, air conditioner and computer readable storage medium |
| CN108361915A (en) * | 2018-02-05 | 2018-08-03 | 广东美的制冷设备有限公司 | Fault detection method, device, air conditioner and computer readable storage medium |
| CN108954667A (en) * | 2017-05-18 | 2018-12-07 | 奥克斯空调股份有限公司 | A kind of scarce fluorine protection control method of air-conditioner with fixed frequency |
| CN109000337A (en) * | 2017-05-31 | 2018-12-14 | 奥克斯空调股份有限公司 | A kind of leakage of refrigerant guard method |
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| CN109737654A (en) * | 2018-12-11 | 2019-05-10 | 珠海格力电器股份有限公司 | Blockage detection method and unit capable of detecting blockage |
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2005
- 2005-06-20 CN CN 200510035352 patent/CN1737448A/en active Pending
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| CN100451473C (en) * | 2006-10-12 | 2009-01-14 | 珠海格力电器股份有限公司 | Air conditioner with refrigerant lack fault detection function and fault detection method |
| CN102401447B (en) * | 2011-05-24 | 2014-04-16 | 宁波奥克斯电气有限公司 | Method for processing disorderly closedown caused by partial blockage of inside pipeline of varied refrigerant volume (VRV) air-conditioning chamber |
| CN102401447A (en) * | 2011-05-24 | 2012-04-04 | 宁波奥克斯电气有限公司 | Method for processing disorderly closedown caused by partial blockage of inside pipeline of varied refrigerant volume (VRV) air-conditioning chamber |
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| CN102563819A (en) * | 2011-12-05 | 2012-07-11 | Tcl空调器(中山)有限公司 | Air conditioner and troubleshooting method thereof |
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| CN108036462B (en) * | 2017-11-29 | 2020-06-23 | 广东美的制冷设备有限公司 | Air conditioner oil blockage fault detection method and air conditioner |
| CN108036462A (en) * | 2017-11-29 | 2018-05-15 | 广东美的制冷设备有限公司 | Oil of air conditioner blocks up the detection method and air conditioner of failure |
| CN108361915A (en) * | 2018-02-05 | 2018-08-03 | 广东美的制冷设备有限公司 | Fault detection method, device, air conditioner and computer readable storage medium |
| CN108317662A (en) * | 2018-02-05 | 2018-07-24 | 广东美的制冷设备有限公司 | Fault detection method, device, air conditioner and computer readable storage medium |
| CN109323365A (en) * | 2018-09-30 | 2019-02-12 | 广东美的制冷设备有限公司 | The method and apparatus and air-conditioning and storage medium of diagnosis air-conditioning obstruction failure |
| CN109737654A (en) * | 2018-12-11 | 2019-05-10 | 珠海格力电器股份有限公司 | Blockage detection method and unit capable of detecting blockage |
| CN109737654B (en) * | 2018-12-11 | 2024-01-23 | 珠海格力电器股份有限公司 | Blocking detection method and unit capable of detecting blocking |
| CN109654663A (en) * | 2018-12-24 | 2019-04-19 | 宁波奥克斯电气股份有限公司 | A kind of multi-connected machine fault cues method, apparatus and air conditioner |
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