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Air conditioner and defrosting control method thereof

A control method and air conditioner technology, applied to heating and ventilation control systems, refrigerators, heating methods, etc., can solve the problems of long defrosting time, poor heating comfort, inaccurate judgment of defrosting timing, etc., and achieve accurate judgment , Reduce the defrosting cycle, improve the effect of heating comfort and heating performance

Active Publication Date: 2013-11-27
广东科龙嘉科电子有限公司
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a defrosting control method for an air conditioner, which solves the technical problems of inaccurate judgment of the defrosting timing of the existing air conditioner, resulting in long defrosting time and poor heating comfort

Method used

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  • Air conditioner and defrosting control method thereof
  • Air conditioner and defrosting control method thereof
  • Air conditioner and defrosting control method thereof

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Embodiment Construction

[0038] Specific embodiments of the present invention are described in detail below.

[0039] see figure 1 , image 3 As shown, the air conditioner defrosting control method proposed in this embodiment is specifically described as follows:

[0040] After the air conditioner is turned on, the temperature sensor detects the outdoor ambient temperature T out and outdoor coil temperature T def . Determine whether the air conditioner is in the heating mode, if it is in the heating mode, then determine whether the compressor is running, when the compressor is running, time the running time of the compressor, after the compressor runs for at least a minute, a is preferably 10 -60 minutes, compare the preset conditions with the detection parameters of the air conditioner, so as to judge whether the air conditioner enters the defrosting control. The specific judgment method is as follows:

[0041] If T def =KT out +B,T def ≤m, and last for b min, b is preferably 1-5min, the air...

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Abstract

The invention relates to an air conditioner and a defrosting control method thereof. According to the defrosting control method, whether defrosting control needs to be conducted or not is judged by the way of judging the relation between outdoor environment temperature and outdoor coiled tube temperature, and the optimization time point for entering in the defrosting control can be accurately judged. After the defrosting control is conducted, the frequency of a compressor is changed, and after switching frequency is reached, a four-way valve is directly switched to conduct defrosting control. After defrosting is completed, the frequency of the compressor is changed, and after the switching frequency is reached, the four-way valve is directly switched so that defrosting operation can be achieved. By means of the air conditioner and the defrosting control method thereof, the precision for entering in and exiting out of defrosting can be guaranteed, meanwhile, due to the fact that halting can not occur to the compressor in the defrosting process, heating capacity attenuation caused by halting of the compressor is reduced, the defrosting cycle is shortened, and the heating comfort and the heating performance of the air conditioner are improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a defrosting control method and an air conditioner adopting the defrosting control method. Background technique [0002] When the air conditioner performs low-temperature heating in winter, frosting will occur on the condenser, which will affect the heating effect of the air conditioner, so it needs to be defrosted. [0003] The defrosting method of the existing air conditioner is generally to determine whether to enter the defrosting by setting several intervals of outdoor ambient temperature, and setting a fixed temperature difference (ambient temperature and outdoor coil temperature) in each interval. [0004] After entering defrosting, the four-way valve changes direction to carry out defrosting. After defrosting is completed, the four-way valve changes direction again to enter the heating state again. [0005] The disadvantages of this defrosting method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F25B47/02F25B49/02
Inventor 李达君高思云
Owner 广东科龙嘉科电子有限公司
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