CN103134142B - Method for detecting complete blockage of air conditioning system - Google Patents
Method for detecting complete blockage of air conditioning system Download PDFInfo
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- CN103134142B CN103134142B CN201310061939.4A CN201310061939A CN103134142B CN 103134142 B CN103134142 B CN 103134142B CN 201310061939 A CN201310061939 A CN 201310061939A CN 103134142 B CN103134142 B CN 103134142B
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Abstract
The invention relates to a method for detecting complete blockage of an air conditioning system. The method includes a, enabling an MCU (microprogrammed control unit) to judge whether an air conditioner is in a refrigerating mode or a heating mode; b, judging whether the air conditioning system is completely blocked or not according to the difference between the temperature of an indoor environment and the temperature of a coil of an indoor heat exchanger, the difference between the temperature of a coil of an outdoor heat exchanger and the temperature of an outdoor environment and a relation between the magnitude of real-time current and the magnitude of rated current corresponding to real-time frequency when the air conditioner is in the refrigerating mode and the operating time is longer than or equal to set time; and c, judging whether the air conditioning system is completely blocked or not according to the difference between the temperature of the coil of the indoor heat exchanger and the temperature of the indoor environment, the difference between the temperature of the outdoor environment and the temperature of the coil of the outdoor heat exchanger and a relation between the magnitude of real-time current and the magnitude of rated current corresponding to real-time frequency when the air conditioner is in the heating mode and the operating time is longer than or equal to set time. The method has the advantages that the problem of complete blockage of the air conditioning system can be timely and accurately judged, the intelligent degree of the air conditioner is effectively improved, and the problem of poor reliability caused when an existing air conditioner works in a faulty mode is prevented.
Description
Technical field
The present invention relates to the detection method that air-conditioning system is blocked up entirely, be particularly suitable for but be not limited only to detection method that frequency-conversion air-conditioning system is blocked up entirely.
Background technology
Air-conditioner general at present, particularly transducer air conditioning, due to components and parts inefficacy, be failure to actuate, or the reasons such as error installed by processes, failure welding and air-conditioner, there will be the problems such as little stop valve is not opened, large stop valve is not opened, electric expansion valve complete shut-down, evaporimeter block up entirely, condenser blocks up entirely, pipeline blocks up entirely, and these problems finally can cause system entirely to be blocked up.Simultaneously due to system, the stifled air-conditioner operation irregularity occurred can not Timeliness coverage entirely, fault message can not be quoted in time, can make refrigerant in air-conditioning system because flow circuit air-conditioner cannot be caused not only without any air-conditioning effect, and long time running also can bring serious reliability failure.
Summary of the invention
For above problem, the invention provides the detection method that a kind of air-conditioning system is blocked up entirely, can detect timely and judge whether air-conditioning blocks up entirely, and point out accordingly.
The detection method that air-conditioning system of the present invention is blocked up entirely, comprising:
A., after air-conditioning start, judge it is refrigeration mode or heating mode by MCU;
B. if refrigeration mode and refrigeration running time >=A minute, then judge whether air-conditioning meets the following conditions: 1, indoor environment temperature-indoor heat exchanger coil temperature≤B DEG C; 2, C DEG C≤outdoor heat exchanger coil temperature-outdoor environment temperature≤D DEG C; 3, the rated current that real-time current≤compressor real-time frequency is corresponding; Determine that air-conditioning system is blocked up entirely when described condition all meets, shut down and point out; When having at least one not meet in described condition, then air-conditioning normally runs; Wherein A is time numerical value, and B, C and D are temperature value;
C. if heating mode and heat running time >=A1 minute, then judge whether air-conditioning meets the following conditions: 1, indoor heat exchanger coil temperature-indoor environment temperature≤B1 DEG C; 2, C1 DEG C≤outdoor environment temperature-outdoor heat exchanger coil temperature≤D1 DEG C; 3, the rated current that real-time current≤compressor real-time frequency is corresponding; Determine that air-conditioning system is blocked up entirely when described condition all meets, shut down and point out; When having at least one not meet in described condition, then air-conditioning normally runs; Wherein A1 is time numerical value, and B1, C1 and D1 are temperature value.
On the basis of existing air conditioner function, utilize the existing processor MCU of air-conditioning, by collection and the calculating of running time of air-conditioning, temperature, current parameters and compressor operation frequency, automatically fault will be quoted when meeting the Parameter Conditions that system blocks up entirely, and point out user, make air-conditioner quit work simultaneously.Thus under the condition not increasing air-conditioner cost, the system stifled problem entirely that air-conditioner occurs is found by software control and Intelligent Measurement, not only increase intelligence degree and the software control ability of air-conditioner, it also avoid air-conditioner work under fault occur integrity problem.By fault cues timely with manifest, be also convenient to breakdown judge and after-sales maintenance service efficiency.
Concrete, by temperature sensor, indoor environment temperature, indoor heat exchanger coil temperature, outdoor heat exchanger coil temperature and outdoor environment temperature are gathered.
Concrete, by current sensor, real-time current is gathered.
Preferably, the various data collected first are stored in register, and air-conditioning MCU reads various data analysis and judges from described register.
Preferably, the described prompting to fault comprises information displaying and auditory tone cues, makes information abundanter and more obvious.
The detection method that air-conditioning system of the present invention is blocked up entirely, can under the condition not increasing air-conditioner cost, promptly and accurately judge the problem that air-conditioning system is blocked up entirely, effectively improve intelligence degree and the software control ability of air-conditioner, avoid air-conditioner to work under fault the integrity problem occurred, be simultaneously also convenient to breakdown judge and after-sales maintenance service efficiency.
Below in conjunction with the detailed description of the invention of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following example.Without departing from the idea case in the present invention described above, the various replacement made according to ordinary skill knowledge and customary means or change, all should comprise within the scope of the invention.
Accompanying drawing explanation
Fig. 1 is the flow chart of the detection method that air-conditioning system of the present invention is blocked up entirely.
Detailed description of the invention
The air-conditioning system of the present invention detection method of entirely blocking up as shown in Figure 1, comprising:
A., after air-conditioning start, judge it is refrigeration mode or heating mode by MCU, if other pattern is as air-supply, dehumidifying etc., air-conditioning normally runs, and does not carry out follow-up judgement;
B. if refrigeration mode and refrigeration running time >=5 minutes, then judge whether air-conditioning meets the following conditions: 1, indoor environment temperature-indoor heat exchanger coil temperature≤5 DEG C; 2 ,-2 DEG C≤outdoor heat exchanger coil temperature-outdoor environment temperature≤3 DEG C; 3, the rated current that real-time current≤compressor real-time frequency is corresponding; Determine that air-conditioning system is blocked up entirely when described condition all meets, shut down and carry out fault message display and auditory tone cues; When having at least one not meet in described condition, then air-conditioning normally runs; List the rated current that compressor real-time frequency is corresponding in Table 1.
C. if heating mode and heat running time >=5 minutes, then judge whether air-conditioning meets the following conditions: 1, indoor heat exchanger coil temperature-indoor environment temperature≤5 DEG C; 2 ,-2 DEG C≤outdoor environment temperature-outdoor heat exchanger coil temperature≤3 DEG C; 3, the rated current that real-time current≤compressor real-time frequency is corresponding; Determine that air-conditioning system is blocked up entirely when described condition all meets, shut down and carry out fault message display and auditory tone cues; When having at least one not meet in described condition, then air-conditioning normally runs; List the rated current that compressor real-time frequency is corresponding in Table 1.
Described indoor environment temperature, indoor heat exchanger coil temperature, outdoor heat exchanger coil temperature and outdoor environment temperature are all gathered by temperature sensor.By current sensor, real-time current is gathered.Air-conditioning MCU reads various data analysis and judges from described register.
On the basis of existing air conditioner function, utilize the existing processor MCU of air-conditioning, by collection and the calculating of running time of air-conditioning, temperature, current parameters and compressor operation frequency, automatically fault will be quoted when meeting the Parameter Conditions that system blocks up entirely, and point out user, make air-conditioner quit work simultaneously.Thus under the condition not increasing air-conditioner cost, the system stifled problem entirely that air-conditioner occurs is found by software control and Intelligent Measurement, not only increase intelligence degree and the software control ability of air-conditioner, it also avoid air-conditioner work under fault occur integrity problem.By fault cues timely with manifest, be also convenient to breakdown judge and after-sales maintenance service efficiency.
Table 1:
Claims (5)
1. the air-conditioning system detection method of entirely blocking up, its feature comprises:
A., after air-conditioning start, judge it is refrigeration mode or heating mode by MCU;
B. if refrigeration mode and refrigeration running time >=5 minutes, then judge whether air-conditioning meets the following conditions: 1, indoor environment temperature-indoor heat exchanger coil temperature≤5 DEG C; 2 ,-2 DEG C≤outdoor heat exchanger coil temperature-outdoor environment temperature≤3 DEG C; 3, the rated current that real-time current≤compressor real-time frequency is corresponding; Determine that air-conditioning system is blocked up entirely when described condition all meets, shut down and carry out the prompting to fault; When having at least one not meet in described condition, then air-conditioning normally runs;
C. if heating mode and heat running time >=5 minutes, then judge whether air-conditioning meets the following conditions: 1, indoor heat exchanger coil temperature-indoor environment temperature≤5 DEG C; 2 ,-2 DEG C≤outdoor environment temperature-outdoor heat exchanger coil temperature≤3 DEG C; 3, the rated current that real-time current≤compressor real-time frequency is corresponding; Determine that air-conditioning system is blocked up entirely when described condition all meets, shut down and carry out the prompting to fault; When having at least one not meet in described condition, then air-conditioning normally runs.
2. the air-conditioning system as claimed in claim 1 detection method of entirely blocking up, be is characterized by: gathered indoor environment temperature, indoor heat exchanger coil temperature, outdoor heat exchanger coil temperature and outdoor environment temperature by temperature sensor.
3. the air-conditioning system as claimed in claim 1 detection method of entirely blocking up, be is characterized by: gathered real-time current by current sensor.
4. the detection method that the air-conditioning system as described in one of claims 1 to 3 is blocked up entirely, is characterized by: the various data collected first are stored in register, and air-conditioning MCU reads various data analysis and judges from described register.
5. the detection method that the air-conditioning system as described in one of claims 1 to 3 is blocked up entirely, is characterized by: the described prompting to fault comprises information displaying and auditory tone cues.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310061939.4A CN103134142B (en) | 2013-02-27 | 2013-02-27 | Method for detecting complete blockage of air conditioning system |
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| CN201310061939.4A CN103134142B (en) | 2013-02-27 | 2013-02-27 | Method for detecting complete blockage of air conditioning system |
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| CN103134142A CN103134142A (en) | 2013-06-05 |
| CN103134142B true CN103134142B (en) | 2015-05-20 |
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104566762B (en) * | 2013-10-12 | 2018-03-20 | 珠海格力电器股份有限公司 | The air outlet abnormality monitoring method and system of dehumidifier |
| CN103791586B (en) * | 2014-01-21 | 2016-06-08 | 宁波奥克斯电气股份有限公司 | Judge the VRF Air Conditioning System method whether ice is stifled due to water of refrigeration mode |
| CN105588285A (en) * | 2016-01-21 | 2016-05-18 | 青岛工学院 | Air conditioner based on pipeline blocking self-diagnosis method |
| CN106150999B (en) * | 2016-07-04 | 2018-02-16 | 珠海格力电器股份有限公司 | Overload of compressor protection detection, the method and device of control |
| CN108278715A (en) * | 2017-01-04 | 2018-07-13 | 奥克斯空调股份有限公司 | A kind of air conditioner lacks fluorine guard method and the air conditioner with scarce fluorine defencive function |
| 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 |
| CN107461883A (en) * | 2017-07-27 | 2017-12-12 | 广东美的制冷设备有限公司 | Detection method, the system that air conditioner and its throttling arrangement block |
| CN108317662B (en) * | 2018-02-05 | 2020-11-27 | 广东美的制冷设备有限公司 | Fault detection method and device, air conditioner and computer readable storage medium |
| CN108361915B (en) * | 2018-02-05 | 2020-08-18 | 广东美的制冷设备有限公司 | Fault detection method and device, air conditioner and computer readable storage medium |
| CN108870644B (en) * | 2018-05-21 | 2020-10-13 | 广东美的暖通设备有限公司 | Air conditioning system filter blockage detection method and detection device |
| CN110848873B (en) * | 2018-08-20 | 2021-09-10 | 奥克斯空调股份有限公司 | Air conditioner refrigerant fault detection method and air conditioner |
| CN111720966A (en) * | 2020-06-08 | 2020-09-29 | 海信（山东）空调有限公司 | Control method of air conditioner |
| CN114413408A (en) * | 2020-10-28 | 2022-04-29 | 广东美的精密模具科技有限公司 | Air conditioner and fault identification method, identification device and readable storage medium thereof |
| CN114151920B (en) * | 2021-11-18 | 2023-02-10 | 宁波奥克斯电气股份有限公司 | Air conditioner system blockage detection method and device and air conditioner |
| CN114216210A (en) * | 2021-12-20 | 2022-03-22 | 珠海格力电器股份有限公司 | Method for judging blocking condition of refrigeration system and air conditioner |
| CN114413425A (en) * | 2021-12-20 | 2022-04-29 | 青岛海尔空调电子有限公司 | Control method and device for air conditioner, air conditioner and storage medium |
| CN114857739A (en) * | 2022-03-11 | 2022-08-05 | 青岛海尔空调器有限总公司 | Method and device for identifying air conditioner fault component, air conditioner and storage medium |
| CN115235041B (en) * | 2022-07-18 | 2023-11-14 | 株洲麦格米特电气有限责任公司 | Air conditioner fault detection method and device and air conditioner |
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