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Defrosting control method and device for air-conditioner

A control method and technology of a control device, which are applied in the directions of control input involving air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., can solve the problem of thick frosting, incomplete defrosting, Frequent defrosting and other problems to achieve the effect of improving the defrosting effect and enhancing the heating effect

Active Publication Date: 2016-06-08
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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Problems solved by technology

However, when the relative humidity of the outdoor air is low or high, the outdoor heat exchanger may basically not work after the operating time of the air conditioner reaches the above-mentioned fixed preset time and the temperature of the heat exchange tube in the outdoor heat exchanger reaches the preset temperature. frosting or frosting is very thick
When there is almost no frost, the air conditioner still performs defrosting, which will lead to frequent defrosting. When the frost is thick, the air conditioner performs defrosting, which will lead to incomplete defrosting. The problems of frequent defrosting and incomplete defrosting make the defrosting effect weak. Poor, seriously affecting the heating effect of the air conditioner

Method used

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  • Defrosting control method and device for air-conditioner
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  • Defrosting control method and device for air-conditioner

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no. 1 example

[0055] Further, refer to image 3 , based on the first embodiment of the defrosting control method of the air conditioner of the present invention, in the second embodiment of the defrosting control method of the air conditioner of the present invention, the above step S30 includes:

[0056] Step S311, judging whether the comparison temperature is less than or equal to the preset temperature; if yes, then determining that the comparison temperature satisfies the preset defrosting condition, and performing step S40; otherwise, determining that the comparison temperature does not meet the preset defrosting condition condition, execute step S20;

[0057] In this embodiment, the above-mentioned preset temperature can be set according to actual needs, and the temperature value can be a fixed value or a different value can be selected according to the change of the outdoor ambient temperature. When the comparative temperature of the heat exchange tube in the outdoor heat exchanger ...

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Abstract

The invention discloses a defrosting control method for an air-conditioner. The defrosting control method comprises the steps that the temperature of a heat exchange tube in an outdoor heat exchanger during heating operation starting of the air-conditioner is acquired and set as an initial temperature; when air-conditioner heating operates for a first preset time, the temperature value of the heat exchange tube in the outdoor heat exchanger is acquired in real time and set as a comparing temperature; whether the air-conditioner meets a preset defrosting condition or not is judged according to the comparing temperature; and when the air-conditioner meets the preset defrosting condition, the air-conditioner is controlled to be in a defrosting mode, and the time duration of the first preset time is regulated according to the initial temperature and the comparing temperature at which the preset defrosting condition is met. The invention further discloses a defrosting control device of the air-conditioner. The defrosting control method and device achieve the purpose of controlling the air-conditioner to start defrosting according to the frosting degree of the outdoor heat exchanger of the air-conditioner, and improve the defrosting effect of the air-conditioner.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a defrosting control method and device for an air conditioner. Background technique [0002] When the air conditioner is running in the heating mode, due to the low temperature of the heat exchanger of the outdoor unit, frost will often appear on the outdoor heat exchanger after meeting the ambient air. If the frost is too thick, it will seriously affect the heating effect of the air conditioner. The current defrosting method of the air conditioner usually detects the temperature of the heat exchange tube in the outdoor heat exchanger after the air conditioner operates for a fixed preset time to determine whether defrosting is required. However, when the relative humidity of the outdoor air is low or high, the outdoor heat exchanger may basically not work after the operating time of the air conditioner reaches the above-mentioned fixed preset time and the temperature of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/41F24F11/62F24F11/64F24F2110/00
Inventor 胡朝发钱伟韦汉儒
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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