Air conditioner defrosting control method

A control method and air conditioner technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve problems such as timing errors, excessive defrosting, false defrosting, etc., to reduce fluctuations , to ensure the heating effect and avoid the effect of false defrosting
CN107228451AInactive Publication Date: 2017-10-03QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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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
2017-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner defrosting control method. In order to obtain the time for the air conditioner to enter the defrosting mode more accurately, the air conditioner defrosting control method provided by the invention comprises the steps of measuring the temperature of an outdoor unit coil under the condition that the air conditioner is in the heating working condition; acquiring the temperature attenuation degree of the outdoor unit coil within the first preset time; and judging whether to enable the air conditioner to enter the defrosting mode according to the temperature attenuation degree of the outdoor unit coil. Since the temperature attenuation of the outdoor unit coil before and after frosting is obvious, the frosting quantity of the air conditioner outdoor unit can be represented accurately according to the temperature attenuation degree of the outdoor unit coil, and the accuracy of selecting the time for the air conditioner to enter the defrosting mode is improved, so that false defrosting, excessive defrosting and other phenomena are avoided effectively.
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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 lowered or raised through the high-pressure / low-pressure / gas / liquid state transition of the refrigerant between the circulation lines, that is, From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is in the heating condition, the coil of the outdoor unit (evaporator) of the air conditioner is prone to frost, and the frost on the coil of the outdoor unit will cause the performance of the refrigeration system to decline, thereby affecting the heating effect of the air conditioner. Reduce the comfort of the indoor environment and affect the user experience. Therefore, when the air co...

Claims

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