Fault diagnosis method for air-conditioner
A technology for fault diagnosis and air conditioning, which is applied in the field of air conditioner fault diagnosis, and can solve problems such as reducing the efficiency of air conditioning, reducing the conduction efficiency of heat exchangers, and damaging compressors
Inactive Publication Date: 2014-01-08
江西麦恩科技有限公司
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Problems solved by technology
This causes the air conditioner to continuously reduce the conduction efficiency of the heat exchanger, increase the air supply resistance and frictional resistance, increase the workload while wasting power resources, and reduce the efficiency of the air conditioner
However, due to improper installation or self-tightness, the air conditioner will leak refrigerant after a period of use, which will affect its cooling or heating effect, and even damage the compressor in severe cases.
It is difficult for users to detect the faults that occur during the operation of these air conditioners. Users only realize when the cooling or heating effect of the air conditioner is extremely poor. This is often the "peak period" of air conditioner use, and it is also the time when air conditioner failures occur frequently. It is difficult for maintenance personnel to report and repair immediately when they are in an emergency, which causes users to have no air conditioner available when they need it most, which violates the original intention of users to purchase air conditioners
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[0010] In order to further understand the technical solutions of the present invention, the present invention will be further described by the following embodiments in conjunction with the accompanying drawings. The diagnosis method of the present invention is to monitor and record the operation process of the air conditioner to obtain the temperature curve of the air conditioner operation including the steady state characteristic value of the steady state temperature and the steady state time, or the turning characteristic value including the turning point temperature and turning time, and establish the temperature curve of the air conditioner under the same condition. According to the corresponding historical data records of operation, compare the steady-state eigenvalue or transition eigenvalue difference between the current temperature curve of air-conditioning operation and the corresponding historical data under the same conditions, that is, to obtain the room temperature ...
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The invention discloses a fault diagnosis method for an air-conditioner. The fault diagnosis method is timely, simple, convenient, reliable and practical. The method comprises the steps that a temperature change curve of a room in which the air-conditioner operates is obtained through monitoring, corresponding history data recording of the operation of the air-conditioner is established, the temperature change curve of the room in which the air-conditioner operates is compared with the corresponding history data of the air-conditioner under the same condition, the room temperature difference of the temperature change curve and the history data is obtained, whether the efficiency of the air-conditioner decreases or not is determined according to the room temperature difference and / or the situation that the room temperature difference gradually increases along with the time, and further, a fault of the air-conditioner is diagnosed.
Description
technical field [0001] The invention relates to a fault diagnosis method for an air conditioner. Background technique [0002] When the indoor and outdoor units of the air conditioner are running, they will exchange heat for cooling or heating with the air through the heat exchanger and send air. After long-term use, dust, fluff, debris, etc. will be adsorbed and adhered to the fins of the air conditioner heat exchanger. The humid environment on the surface, filter net and related parts of the air supply link will cause the heat exchanger fins to oxidize and accumulate and thicken continuously. This causes the air conditioner to continuously reduce the conduction efficiency of the heat exchanger, increase the air supply resistance and frictional resistance, increase the workload, waste power resources, and reduce the efficiency of the air conditioner. However, due to improper installation or self-tightness, the air conditioner will leak refrigerant after a period of use, wh...
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IPC IPC(8): G01M99/00
Inventor 黎浩荣蓸成飚熊钧徐永凯
Owner 江西麦恩科技有限公司