CN1737448A - Air conditioner capable of diagnosing failure of refrigerant shortage and system block and diagnosis method thereof - Google Patents

Air conditioner capable of diagnosing failure of refrigerant shortage and system block and diagnosis method thereof Download PDF

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Publication number
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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CN
China
Prior art keywords
jams
heat exchanger
lacks
temperature
producing medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 200510035352
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Chinese (zh)
Inventor
黄辉
张辉
张桃
庄嵘
梁俊杰
殷海明
郝彩宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN 200510035352 priority Critical patent/CN1737448A/en
Publication of CN1737448A publication Critical patent/CN1737448A/en
Pending legal-status Critical Current

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Abstract

This invention relates to an air conditioner and a failure diagnosis method. The air conditioner has a failure diagnosis function, which comprises a compressor, an outside heat exchanger, a restricting element, an inner heat exchanger, a central process unit, a coolant wantage or system blockage diagnosis mechanism; wherein the diagnosis mechanism comprises a pipe temperature sensor, an environmental temperature sensor and a comparison unit, and the pipe temperature sensor is set in the coolant pipe of the indoor heat exchanger, the environmental temperature sensor is in the windward of the indoor heat exchanger, and the comparison unit is connected with the central process unit.

Description

Have cold-producing medium and lack air-conditioner and diagnostic method with the system jams fault diagnosis functions
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.
CN 200510035352 2005-06-20 2005-06-20 Air conditioner capable of diagnosing failure of refrigerant shortage and system block and diagnosis method thereof Pending CN1737448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510035352 CN1737448A (en) 2005-06-20 2005-06-20 Air conditioner capable of diagnosing failure of refrigerant shortage and system block and diagnosis method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510035352 CN1737448A (en) 2005-06-20 2005-06-20 Air conditioner capable of diagnosing failure of refrigerant shortage and system block and diagnosis method thereof

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 capable of diagnosing failure of refrigerant shortage and system block and diagnosis method thereof

Country Status (1)

Country Link
CN (1) CN1737448A (en)

Cited By (26)

* Cited by examiner, † Cited by third party
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 refrigerating medium lack and accident detection functions and method for detecting accidents
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 abnormality protection control method for same
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 Fluorine lack detecting method and device for VRF (variable refrigerant flow) system
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 provided 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 A kind of control method preventing from reporting the protection of scarce coolant by mistake
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
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
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

Cited By (38)

* Cited by examiner, † Cited by third party
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 refrigerating medium lack and accident detection functions and method for detecting accidents
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
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
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
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 abnormality protection control method for same
CN103375874B (en) * 2012-04-23 2016-03-02 珠海格力电器股份有限公司 The refrigerant circulation abnormal protection control method of air-conditioner and air-conditioner
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
CN103235225B (en) * 2013-04-25 2016-04-06 青岛海尔空调电子有限公司 A kind of method and device detecting convertible frequency air-conditioner and lack fluorine running
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
CN104110792B (en) * 2014-05-30 2017-02-08 美的集团股份有限公司 Control method and device for air conditioning system
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
CN104101051B (en) * 2014-06-24 2017-01-18 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
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
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
CN104654537B (en) * 2015-02-02 2017-06-06 珠海格力电器股份有限公司 Air conditioning multi-couple machine lacks the detection method and device of fluorine
CN104654537A (en) * 2015-02-02 2015-05-27 珠海格力电器股份有限公司 Fluorine lack detecting method and device for VRF (variable refrigerant flow) system
CN104913408A (en) * 2015-06-29 2015-09-16 江苏苏净集团有限公司 Dehumidifier
CN105065249B (en) * 2015-08-31 2017-07-28 珠海格力电器股份有限公司 Compressor performance detection means, air-conditioning system and control method with the device
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 provided 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
CN105423484B (en) * 2015-11-05 2018-07-24 广东爱晟电子科技有限公司 A kind of insufficient detection method of air-conditioning refrigerant and detection circuit
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
CN106196427A (en) * 2016-06-29 2016-12-07 珠海格力电器股份有限公司 A kind of control method preventing from reporting the protection of scarce coolant by mistake
CN106839282B (en) * 2017-01-05 2019-10-01 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
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
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
CN108954667B (en) * 2017-05-18 2020-09-29 奥克斯空调股份有限公司 Fluorine-lacking protection control method for fixed-frequency air conditioner
CN107062559B (en) * 2017-05-25 2019-04-30 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
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
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
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
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
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
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
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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