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Air conditioner defrosting control method and device as well as air conditioner

A control method and control device technology, applied in heating and ventilation control systems, mechanical equipment, heating and ventilation safety systems, etc., can solve problems such as frequent defrosting and the inability of air conditioners to accurately identify frosting conditions

Inactive Publication Date: 2019-07-26
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem solved by the invention is: the air conditioner cannot accurately identify the frosting condition, which causes frequent defrosting and other problems

Method used

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  • Air conditioner defrosting control method and device as well as air conditioner
  • Air conditioner defrosting control method and device as well as air conditioner
  • Air conditioner defrosting control method and device as well as air conditioner

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention. ...

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Abstract

The invention provides an air conditioner defrosting control method and device as well as an air conditioner. The air conditioner defrosting control method comprises the following steps: obtaining anouter coil tube temperature of an air conditioner every preset time interval, and determining a first-order derivative and a second-order derivative of the outer coil tube temperature; and controllingthe air conditioner to defrost while the first-order derivative and the second-order derivative meet set conditions. By determining the first-order derivative and the second-order derivative of the outer coil tube temperature, defrosting can be determined to perform on the air conditioner according to the first-order derivative and the second-order derivative, and a defrosting condition can be intuitively determined; when frosting degree of the air conditioner is relatively light, defrosting is not performed, so that precise defrosting is performed while frost is relatively thick; and meanwhile, frequent defrosting caused by incomplete defrosting can be avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioner defrosting, in particular to an air conditioner defrosting control method, device and air conditioner. Background technique [0002] The defrosting control technology of the existing air conditioner mostly uses the attenuation degree and time accumulation of the external unit coil temperature to identify the frosting situation of the external unit, sets the requirements according to the temperature and time, and then determines whether to control the defrosting of the air conditioner, but the coil temperature The attenuation only reflects the temperature change of the heat exchanger of the external unit, which is affected by factors such as ambient temperature and air volume, and cannot accurately identify the actual situation of frosting on the external unit. Often, the frost layer has just formed and the frost layer is very thin. The defrosting will be carried out at the next time, resul...

Claims

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Application Information

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IPC IPC(8): F24F11/42F24F11/61F24F11/64F24F11/54F24F140/20
CPCF24F11/42F24F11/54F24F11/61F24F11/64F24F2140/20
Inventor 郭会宾秦宪
Owner NINGBO AUX ELECTRIC
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