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Method for detecting four-way valve of air-conditioner

A technology for air conditioners and four-way valves, which is applied in the field of detection and judgment of whether the four-way valves of air conditioners are abnormal, and can solve time-consuming and abnormal problems (such as: blowing hot air when cooling, blowing cold air when heating, poor subjective feelings of consumers) and other problems to achieve the effect of facilitating rapid positioning and improving efficiency

Active Publication Date: 2015-06-03
四川长虹空调有限公司
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AI Technical Summary

Problems solved by technology

If the four-way valve of the air conditioner is abnormal due to four-way valve relay failure, drive circuit failure, software failure, and four-way valve stuck, etc., the four-way valve will not be able to switch normally according to the mode requirements, resulting in abnormal working mode of the air conditioner (such as: blowing hot air when cooling, and blowing cold air when heating), which brings extremely poor subjective feelings to consumers;
[0003] In the prior art, the air conditioner cannot self-test the abnormal fault of the four-way valve. Therefore, when the fault occurs generally, the user can only ask the after-sales service personnel to repair it based on subjective feelings. Only then can the corresponding maintenance be carried out, which is more time-consuming

Method used

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  • Method for detecting four-way valve of air-conditioner

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Embodiment

[0017] Such as figure 1 As shown, the method for detecting the abnormality of the four-way valve of the air conditioner in this example is realized by the following steps:

[0018] 1. When the air conditioner is turned on, its working mode is judged. The solution of the present invention only focuses on the heating mode or cooling mode, and is not applicable to other modes such as dehumidification and air supply;

[0019] 2. If the air conditioner detects that it is running in heating mode, judge whether the four-way valve is abnormal according to the following conditions:

[0020] a. Time the running time, and judge whether the running time reaches 5 minutes; b. Collect the current operating frequency of the compressor, and judge whether it reaches 35Hz; c. Detect and calculate the difference between the indoor ambient temperature and the indoor heat exchanger coil temperature, Determine whether the difference is greater than or equal to 2°C; d. Detect and calculate the diff...

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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 [0001] The invention relates to an intelligent detection technology of an air conditioner, in particular to a method for detecting and judging whether the four-way valve of the air conditioner is abnormal. Background technique [0002] For the four-way valve of the air conditioner, it is used to reverse the thermal cycle of the refrigerant in the pipeline, so as to realize cooling or heating according to the user's demand instruction. If the four-way valve of the air conditioner is abnormal due to four-way valve relay failure, drive circuit failure, software failure, and four-way valve stuck, etc., the four-way valve will not be able to switch normally according to the mode requirements, resulting in abnormal working mode of the air conditioner (such as: blowing hot air when cooling, and blowing cold air when heating), which brings extremely poor subjective feelings to consumers; [0003] In the prior art, the air conditioner cannot self-test the abnormal fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00
Inventor 阳洪邱名友杨涛
Owner 四川长虹空调有限公司
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