How to defrost the air conditioner

A technology of air conditioning and defrosting time, applied in the direction of damage protection, refrigeration components, refrigerators, etc., can solve problems affecting heating performance, achieve the effect of avoiding false defrosting and improving defrosting efficiency

Active Publication Date: 2018-06-05
ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a defrosting method for air conditioners to solve the problem of false defrosting and affecting heating performance in the prior art

Method used

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  • How to defrost the air conditioner

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Embodiment Construction

[0016] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0017] like figure 1 As shown, the present invention provides an air-conditioning defrosting method, which can be used for the defrosting control of the central air-conditioning in the heating process. The defrosting method includes the following steps:

[0018] Step 1, collect ambient temperature, ambient humidity and fin temperature. Preferably, an ambient temperature sensor, an ambient humidity sensor, and a fin temperature sensor may be used to respectively collect the ambient temperature, ambient humidity, and fin temperature.

[0019] Step 2, calculate the dew point temperature corresponding to the ambient temperature and ambient humidity, and judge whether the fin meets the conditions for frosting according to the relationship between the f...

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Abstract

The invention relates to a defrosting method for an air conditioner, comprising the following steps: step 1, collecting ambient temperature, ambient humidity and fin temperature; step 2, calculating the dew point temperature corresponding to the ambient temperature and ambient humidity, and calculating The relationship between the temperature determines whether the fins meet the frosting conditions; if they meet, go to step 3, otherwise, return to step 1; step 3, collect the suction pressure, and calculate the evaporation temperature corresponding to the suction pressure and its The rate of change, if the rate of change is greater than the predetermined rate of change, start defrosting; otherwise, go to step 3. In the defrosting method of the present invention, the rate of change of the evaporation temperature of the heat exchanger on the air side during the heating process is used as the judgment condition for whether to enter the defrosting, thereby avoiding false defrosting of the unit and improving the defrosting efficiency. The heating capacity of the air-cooled heat pump unit is brought into play.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioner defrosting method. Background technique [0002] During the heating operation of the air-cooled heat pump unit of the central air conditioner in winter, when the fin temperature of the heat exchanger on the air side is lower than the dew point temperature of the atmosphere and lower than 0 degrees (it will vary according to the change of the regional atmospheric pressure), The heat exchanger will frost. As the thickness of the frost layer becomes thicker, the spacing between the fins becomes smaller and smaller, which will cause the wind resistance of the heat exchanger to increase and the wind speed to decrease, resulting in the heating capacity of the air-cooled heat pump unit worse. Therefore, in the heating process, defrosting control logic needs to be added to improve the heating performance of the air-cooled heat pump unit. [0003] In the prior art, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B47/00F24F11/41
Inventor 吴伟军钟建法何跃智
Owner ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
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