Control method and device for air conditioner defrosting

A technology of air conditioning and duration, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem that the fixed time interval cannot match the actual defrosting requirements, and achieve the effect of precise control and guaranteed operation energy efficiency.
CN107906808AActive Publication Date: 2018-04-13QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
Publication Date
2018-04-13

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Abstract

The invention discloses a control method for air conditioner defrosting and belongs to the technical field of air conditioners. The control method comprises the steps that a first temperature variablequantity of an external coil within the standard defrosting interval time is obtained; according to the first temperature variable quantity, the defrosting interval compensation time is determined; and when the accumulated time after the defrosting process of the last time of an air conditioner is finished reaches the sum of the standard defrosting interval time and the defrosting interval compensation time, the air conditioner is controlled to start the defrosting process. According to the control method for air conditioner defrosting, the time interval between two times of the continuously-executed defrosting processes is determined according to the temperature variable quantity, detected by a defrosting sensor, of the external coil, thus, the change, caused by the factors such as air conditioner operating and the external environment, of the air conditioner frosting situation can be considered so that the time interval of two adjacent times of the defrosting processes can meet thepractical defrosting need, control is more accurate, and the operating energy efficiency of the air conditioner under the severe cold and low-temperature weather is ensued.
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Description

technical field

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

[0002] With the improvement of people's living standards, air-conditioning equipment has also entered thousands of households. The use of household air conditioners and central air conditioners is becoming more and more common. Users have higher and higher requirements for the comfort of air conditioners. Some problems have gradually come out, one of which is the problem of frost and freezing of the outdoor unit when the air conditioner is running in severe cold weather.

[0003] When the air conditioner is running in a low-temperature region or a region with strong wind and snow, the condensed water on the outer surface of the condenser of the outdoor unit will drip onto the chassis. If there is icing problem, the condensed ice layer on the outdoor unit will hinder the heat exchange between...

Claims

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