Defrosting method of air conditioner

A technology for air conditioners and external condensers, which is applied in the field of defrosting of air conditioners, which can solve the problems of excessive frost in air conditioners and is not easy to remove, and achieve the effects of increasing heating capacity, increasing effective heating operation time, and increasing effective time
CN104165486AActive Publication Date: 2014-11-26GUANGDONG MIDEA GRP WUHU REFRIGERATING EQUIP CO LTD +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG MIDEA GRP WUHU REFRIGERATING EQUIP CO LTD
Publication Date
2014-11-26

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Abstract

The invention discloses a defrosting method of an air conditioner. The defrosting method comprises the following steps: (S1) the operation time M of a compressor is detector; (S2) when the M is greater than M1, the temperature T of a pipe on an outdoor condenser or an indoor evaporator is detected to determine a maximal value Tmax; (S3) the needed time t of each reduction of the Tmax by delta T DEG C is detected, and is compared with a first predetermined value tt1 and a second predetermined value tt2; (S4) when the t is greater than the tt1 and smaller than the tt2, and the M is not smaller than the M2, the air conditioner enters a defrosting phase; and (S5) in the defrosting phase, when the air conditioner operates by the defrosting time DT or detects a defrosting quit signal, the defrosting is finished, the step S1 is returned to, and the operation is recycled like this. According to the defrosting method of the air conditioner disclosed by the invention, the defrosting of the air conditioner in the frosting state can be guaranteed, so that the no-frost defrosting condition in the heating operation process of the air conditioner is reduced, the effective heating operation time is prolonged, and the heating quantity is increased.
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Description

technical field

[0001] The invention relates to the field of household electrical appliances, in particular to a defrosting method for an air conditioner. Background technique

[0002] The setting of the defrosting time in the existing intelligent defrosting method is based on the worst working conditions, and the defrosting time is relatively long, while the general frosting situation does not require such a long time for defrosting , causing waste and affecting heating operation. And in the defrosting operation, the temperature of the indoor heat exchanger will keep decreasing, and the temperature condition for defrosting exit generally does not work, so that the surface of the indoor heat exchanger is frosted or even frozen until the temperature of the indoor heat exchanger reaches a constant value .

[0003] The existing intelligent defrosting method will have the following problems. When the air conditioner has been running for a period of time and is about to reach t...

Claims

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