Air-conditioner and defrosting method and defrosting device thereof

An air conditioner and controller technology, applied in the direction of space heating and ventilation, heating methods, refrigeration and liquefaction, etc., can solve the problems of reducing the service life of the unit and general defrosting effect, so as to shorten the defrosting cycle and avoid frequent defrosting Effect of defrosting, good defrosting effect
CN106524420AActive Publication Date: 2017-03-22CHONGQING MIDEA GENERAL REFRIGERATING EQUIP +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING MIDEA GENERAL REFRIGERATING EQUIP
Publication Date
2017-03-22

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Abstract

The invention relates to an air-conditioner and a defrosting method and a defrosting device thereof. The defrosting method comprises the steps that after starting of a compressor is completed, running time T1 of the compressor is recorded; when the time T1 is equal to preset time T, a suction pressure value or an evaporation pressure value is detected; when the suction pressure value or the evaporation pressure value is smaller than a preset pressure value, a running pressure specific value of the air-conditioner and continuous time T2 of the air-conditioner are detected; when the pressure specific value and / or the continuous time T2 and a preset pressure specific value meet the defrosting condition, the air-conditioner is controlled to carry out defrosting, thus, frequent defrosting can be avoided, the period of carrying out defrosting in a severe frosting environment can be shortened, intelligent defrosting can be achieved effectively, the good defrosting effect is achieved, a unit can be protected, and reliable running of the unit can be achieved.
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Description

Technical field

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

[0002] With the popularity of dual air-conditioning systems, central air-conditioning is not only turned on in summer for cooling operations, but also turned on for heating in winter. Therefore, the problem of frosting occurs. Because the outdoor temperature is very low in winter, it is easy to frost the air conditioner. Once frost forms, it will affect the operating performance of the air conditioner. Severe frost will also cause the unit to protect and even reduce the service life. Therefore, the defrosting of central air conditioning is critical. Among them, the more common ones are washing with water, heating with hot air circulation to defrost, and heating with electric heating elements.

[0003] Under normal circumstances, the more commonly used cyclic heating defrost met...

Claims

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