Air conditioner defrosting control method

A control method and air conditioner technology, applied to heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve the problems of low efficiency and single defrosting process, achieve rapid defrosting operation, reduce the number of blowbacks, and improve The effect of defrosting efficiency
CN110836502BActive Publication Date: 2021-10-29QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
Publication Date
2021-10-29

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Abstract

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed in the present invention is aimed at an air conditioner with a bypass defrosting circuit. The method includes the following steps: when the air conditioner needs to enter the defrosting mode, obtain the External coil temperature Toil; selectively make the air conditioner enter bypass defrosting mode or reverse cycle defrosting mode according to Toil; when the air conditioner enters bypass defrosting mode, control the opening / closing of bypass defrosting circuit at intervals , and when the bypass defrosting circuit is closed, the outdoor fan is controlled to reverse the setting time; the opening time and setting time of the bypass defrosting circuit are based on t 上 , t 中 , t 下 Sure. The invention can accurately select the best defrosting mode, and efficiently blow off the melted frost layer, thereby greatly improving the defrosting efficiency of the air conditioner.
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Description

technical field

[0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. Background technique

[0002] As a device that can adjust the indoor ambient temperature, the air conditioner works on the principle that the indoor ambient temperature is reduced or increased by the refrigerant passing through the circulation pipeline through high-pressure / low-pressure / gas / liquid state transitions, that is, from From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is in heating operation, if the temperature of the outdoor coil is too low under certain humidity conditions, it will cause frosting, and the frosting of the outdoor coil will reduce the heat exchange efficiency of the outdoor heat exchanger and affect the cooling performance of the air conditioner. The thermal effect reduces the comfort of the indoor environment and affec...

Claims

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