CN103104962A - Method for detecting four-way valve of air-conditioner - Google Patents
Method for detecting four-way valve of air-conditioner Download PDFInfo
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- CN103104962A CN103104962A CN2013100614456A CN201310061445A CN103104962A CN 103104962 A CN103104962 A CN 103104962A CN 2013100614456 A CN2013100614456 A CN 2013100614456A CN 201310061445 A CN201310061445 A CN 201310061445A CN 103104962 A CN103104962 A CN 103104962A
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Abstract
The invention relates to air-conditioner intelligent detection technique, and discloses a method for detecting a four-way valve of an air-conditioner. The method for detecting the four-way valve of the air-conditioner can automatically detect and judge whether the four-way valve is normal or abnormal, and timely displays faults, so that convenience is provided for failure predication and after-sales repair. The method comprises the following steps: judging a work pattern when the air-conditioner is switched on; timing operation time of the air-conditioner when the air-conditioner is operated in a heating or a cooling mode; collecting present working frequency of a compressor when the operation time achieves a preset time threshold value; detecting and calculating a difference value of indoor environment temperature and indoor heat exchanger coil pipe temperature and a difference value of outdoor heat exchanger coil pipe temperature and outer environment temperature according to a specific working mode of the air-conditioner when the present working frequency of the compressor achieves a preset frequency threshold value; and judging the four-way valve is abnormal when setting conditions are met, and carrying out alarm reminding for the failure. The method for detecting the four-way valve of the air-conditioner is suitable for being used for intelligently detecting failure of the four-way valve of the air-conditioner.
Description
Technical field
The present invention relates to air-conditioner Intelligent Measurement technology, specifically, relate to a kind of to air-conditioner cross valve abnormal detection determination methods whether.
Background technology
For the air-conditioner cross valve, it is used for cold-producing medium is commutated in ducted thermal cycle, thereby realizes refrigeration or heat according to user's requirement command.If the air-conditioner cross valve is because the reasons such as cross valve relay fault, drive circuit fault, software fault and cross valve be stuck occur when abnormal, can cause cross valve not switch by the pattern requirement is normal, thereby cause abnormal (as: blowing hot-air during refrigeration of working mode of air-conditioner, blow a cold wind over when heating), bring the subjective feeling of extreme difference to the consumer;
In the prior art, air-conditioner can not carry out the oneself to the abnormal fault of cross valve and detect, therefore, when this fault generally occurring, the user can only ask after-sale service personnel on-site maintenance with subjective feeling, and the after-sale service personnel also need just can carry out corresponding maintenance after field diagnostic, and are more time-consuming.
Summary of the invention
Technical problem to be solved by this invention is: propose a kind of abnormal method of air-conditioner cross valve that detects, automatically whether cross valve is normally detected judgement, in time carry out fault and show, thereby judge and after-sales service is provided convenience for fault.
The present invention solves the problems of the technologies described above the technical scheme that adopts:
a kind of abnormal method of air-conditioner cross valve that detects, comprise: when air-conditioner start operation, mode of operation is judged, when air-conditioner to heat or refrigeration mode when operation, to carrying out timing its running time, when reach the Preset Time threshold value running time, gather compressor work at present frequency, if compressor work at present frequency reaches the predeterminated frequency threshold value, whether abnormal according to air-conditioner specific works mode decision cross valve: if be heating mode, by detecting and calculate indoor environment temperature and the difference of indoor heat exchanger coil temperature and the difference of outdoor heat exchanger coil temperature and outdoor environment temperature, when satisfied imposing a condition, judge that cross valve occurs abnormal, this fault is carried out alarm, if be refrigeration mode, by detecting and the interior heat exchanger coils temperature of counting chamber and the difference of indoor environment temperature and the difference of outdoor environment temperature and outdoor heat exchanger coil temperature, when satisfied imposing a condition, judge that cross valve occurs abnormal, this fault is carried out alarm and shut down.
Further, the method specifically comprises:
A. when air-conditioner start operation, mode of operation is judged, if air-conditioner moves with heating mode, enter step b, if air-conditioner moves with refrigeration mode, enter step c;
b. to carrying out timing its running time, when reach 5 minutes running time, gather compressor work at present frequency, if compressor work at present frequency reaches 35Hz, whether the difference of the difference by detecting and calculate indoor environment temperature and indoor heat exchanger coil temperature and outdoor heat exchanger coil temperature and outdoor environment temperature is satisfied imposes a condition to judge whether cross valve occurs extremely: when indoor environment temperature-indoor heat exchanger coil temperature 〉=2 ℃, and during outdoor heat exchanger coil temperature-outdoor environment temperature 〉=2 ℃, judge that the air-conditioner cross valve occurs abnormal, this fault is carried out alarm and shut down, process ends,
c. to carrying out timing its running time, when reach 5 minutes running time, gather compressor work at present frequency, if compressor work at present frequency arrives 35Hz, by detect and counting chamber in whether the difference of the difference of heat exchanger coils temperature and indoor environment temperature and outdoor environment temperature and outdoor heat exchanger coil temperature satisfied imposes a condition to judge whether cross valve occurs extremely: when indoor heat exchanger coil temperature-indoor environment temperature 〉=2 ℃, and during outdoor environment temperature-outdoor heat exchanger coil temperature 〉=2 ℃, judge that the air-conditioner cross valve occurs abnormal, this fault is carried out alarm and shut down, process ends.
Further, described this fault is carried out alarm, comprise by man-machine interface this fault message is shown.
The invention has the beneficial effects as follows: whether the air-conditioner cross valve is carried out the Intelligent Measurement judgement extremely; be convenient to the quick location to fault message; be conducive to improve the efficient of after-sales service; and in case judge that extremely at once shutting down appears in the air-conditioner cross valve, avoid to the user bring blow a cold wind over when heating, the subjective feeling of the difference of blowing hot-air when freezing.
Description of drawings
Fig. 1 is the abnormal method flow diagram of detection air-conditioner cross valve in the embodiment of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is further described.
The invention discloses a kind of abnormal method of air-conditioner cross valve that detects, automatically whether cross valve is normally detected judgement, in time carry out fault and show, thereby judge and after-sales service is provided convenience for fault.
Embodiment:
As shown in Figure 1, the abnormal method of the detection air-conditioner cross valve in this example adopts following steps to realize:
When 1, air-conditioner is started shooting, its mode of operation is judged, the solution of the present invention is only paid close attention to heating mode or refrigeration mode, is not suitable for other patterns such as dehumidifying, air-supply;
If 2 air-conditioners detect it and move with heating mode, whether abnormal by following condition judgment cross valve:
A. to carrying out timing running time, judge whether reach 5 minutes running time; B. gather compressor work at present frequency, judge whether to reach 35Hz; C. detect and calculate the difference of indoor environment temperature and indoor heat exchanger coil temperature, judge that whether difference is more than or equal to 2 ℃; D. the difference of detection and counting chamber external heat exchanger coil temperature and outdoor environment temperature, judge that whether difference is more than or equal to 2 ℃;
When only having above-mentioned 4 conditions to satisfy simultaneously, judge that just the air-conditioner cross valve is abnormal at this moment, have arbitrary condition not satisfy and show that all this moment, the air-conditioner cross valve still worked;
that is: only have when running time 〉=5 minute, and compressor work at present frequency 〉=35Hz, and indoor environment temperature-indoor heat exchanger coil temperature 〉=2 ℃, and during outdoor heat exchanger coil temperature-outdoor environment temperature 〉=2 ℃, judge that cross valve is abnormal, this moment this fault message is shown (as: showing " cross valve breaks down " or corresponding failure code) at human-computer interaction interface, simultaneously compressor is shut down control, blow a cold wind over when avoiding heating, bring bad experience to the user, the user can dial the after-sale service phone, inform after-sale service personnel failure cause, be convenient to timely on-site maintenance,
If 3 air-conditioners detect it and move with refrigeration mode, whether abnormal by following condition judgment cross valve:
A. to carrying out timing running time, judge whether reach 5 minutes running time; B. gather compressor work at present frequency, judge whether to reach 35Hz; C. the difference of heat exchanger coils temperature and indoor environment temperature in detection and counting chamber, judge that whether difference is more than or equal to 2 ℃; D. detect and calculate the difference of outdoor environment temperature and outdoor heat exchanger coil temperature, judge that whether difference is more than or equal to 2 ℃;
When only having above-mentioned 4 conditions to satisfy simultaneously, judge that just the air-conditioner cross valve is abnormal at this moment, have arbitrary condition not satisfy and show that all this moment, the air-conditioner cross valve still worked;
that is: only have when running time 〉=5 minute, and compressor work at present frequency 〉=35Hz, and indoor heat exchanger coil temperature-indoor environment temperature 〉=2 ℃, and during outdoor environment temperature-outdoor heat exchanger coil temperature 〉=2 ℃, judge that cross valve is abnormal, this moment this fault message is shown (as: showing " cross valve breaks down " or corresponding failure code) at human-computer interaction interface, simultaneously compressor is shut down control, blowing hot-air when avoiding freezing, bring bad experience to the user, the user can dial the after-sale service phone, inform after-sale service personnel failure cause, be convenient to timely on-site maintenance,
It is to be noted, relevant parameter in the above embodiment of the present invention can be adjusted according to the actual conditions of air-conditioner, be not limited to the above concrete numerical value of enumerating, and the present invention is not only applicable to transducer air conditioning, also be applicable to the non-frequency air-conditioner, the air-conditioner of the data acquisition hardware such as, outdoor temperature sensor outdoor coil pipe used for not having can suitably increase the acquisition hardware circuit, utilize the existing processor MCU of air-conditioning, also can realize this detection method.
Therefore; the claimed technical scheme of the present invention comprises but is not limited only to above-described embodiment; those skilled in the art expects easily that according to the above-mentioned description of this invention some are equal to replacement/modification, and it is all within the protection domain that belongs under Spirit Essence of the present invention.
Claims (3)
1. one kind is detected the abnormal method of air-conditioner cross valve, it is characterized in that, comprise: when air-conditioner start operation, mode of operation is judged, when air-conditioner to heat or refrigeration mode when operation, to carrying out timing its running time, when reach the Preset Time threshold value running time, gather compressor work at present frequency, if compressor work at present frequency reaches the predeterminated frequency threshold value, whether abnormal according to air-conditioner specific works mode decision cross valve: if be heating mode, by detecting and calculate indoor environment temperature and the difference of indoor heat exchanger coil temperature and the difference of outdoor heat exchanger coil temperature and outdoor environment temperature, when satisfied imposing a condition, judge that cross valve occurs abnormal, this fault is carried out alarm, if be refrigeration mode, by detecting and the interior heat exchanger coils temperature of counting chamber and the difference of indoor environment temperature and the difference of outdoor environment temperature and outdoor heat exchanger coil temperature, when satisfied imposing a condition, judge that cross valve occurs abnormal, this fault is carried out alarm and shut down.
2. a kind of abnormal method of air-conditioner cross valve that detects as claimed in claim 1, is characterized in that, the method specifically comprises:
A. when air-conditioner start operation, mode of operation is judged, if air-conditioner moves with heating mode, enter step b, if air-conditioner moves with refrigeration mode, enter step c;
b. to carrying out timing its running time, when reach 5 minutes running time, gather compressor work at present frequency, if compressor work at present frequency reaches 35Hz, whether the difference of the difference by detecting and calculate indoor environment temperature and indoor heat exchanger coil temperature and outdoor heat exchanger coil temperature and outdoor environment temperature is satisfied imposes a condition to judge whether cross valve occurs extremely: when indoor environment temperature-indoor heat exchanger coil temperature 〉=2 ℃, and during outdoor heat exchanger coil temperature-outdoor environment temperature 〉=2 ℃, judge that the air-conditioner cross valve occurs abnormal, this fault is carried out alarm and shut down, process ends,
c. to carrying out timing its running time, when reach 5 minutes running time, gather compressor work at present frequency, if compressor work at present frequency arrives 35Hz, by detect and counting chamber in whether the difference of the difference of heat exchanger coils temperature and indoor environment temperature and outdoor environment temperature and outdoor heat exchanger coil temperature satisfied imposes a condition to judge whether cross valve occurs extremely: when indoor heat exchanger coil temperature-indoor environment temperature 〉=2 ℃, and during outdoor environment temperature-outdoor heat exchanger coil temperature 〉=2 ℃, judge that the air-conditioner cross valve occurs abnormal, this fault is carried out alarm and shut down, process ends.
3. a kind of abnormal method of air-conditioner cross valve that detects as claimed in claim 1 or 2, is characterized in that, described this fault carried out alarm, comprises by man-machine interface this fault message is shown.
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