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Method for controlling air conditioner to enter defrosting mode and air conditioner

An air conditioner and heating mode technology, which is applied to the control input involving air characteristics, space heating and ventilation control input, space heating and ventilation, etc. Advanced problems, to achieve the effect of low cost and high accuracy

Active Publication Date: 2017-10-27
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for controlling the air conditioner to enter the defrosting mode and the air conditioner, aiming to solve the technical problems that the air conditioner cannot enter the defrosting mode in time and accurately and the cost is high

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  • Method for controlling air conditioner to enter defrosting mode and air conditioner
  • Method for controlling air conditioner to enter defrosting mode and air conditioner
  • Method for controlling air conditioner to enter defrosting mode and air conditioner

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no. 5 example

[0068] Further, based on any one of the first to third embodiments of the method for controlling the air conditioner to enter the defrosting mode of the present invention, the present invention also proposes a fifth embodiment of the method for controlling the air conditioner to enter the defrosting mode, step S10 includes:

[0069] When the air conditioner is in the heating mode, obtain the temperature of the outdoor heat exchanger tube wall of the outdoor unit of the air conditioner;

[0070] When the tube wall temperature of the outdoor heat exchanger is less than or equal to the second preset temperature, the air inlet temperature and the outlet air temperature of the outdoor unit of the air conditioner are obtained.

[0071] In this embodiment, a temperature sensor can be set on the outdoor heat exchanger coil of the air conditioner, and the temperature of the outdoor heat exchanger coil can be monitored in real time through the temperature sensor. The temperature sensor ...

no. 1 example

[0095] Further, based on the first embodiment of the air conditioner of the present invention, the present invention also proposes a second embodiment of the air conditioner, and the defrosting control module 43 is also used to calculate the difference between the first difference and the second difference When the ratio between the values ​​is greater than or equal to the first preset threshold and smaller than the second preset threshold, the operating frequency of the compressor of the air conditioner is controlled to decrease.

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Abstract

The invention discloses a method for controlling an air conditioner to enter a defrosting mode and the air conditioner. The method comprises the steps that when the air controller is in a heating mode, the air inlet temperature, air outlet temperature and outdoor heat exchanger pipe wall temperature of an outdoor unit of the air conditioner are obtained; a first difference value between the air inlet temperature and the air outlet temperature and a second difference value between the air inlet temperature and the outdoor heat exchanger pipe wall temperature are calculated; and when the specific value between the first difference value and the second difference value is smaller than a first preset threshold value, the air conditioner is controlled to enter the defrosting mode. Due to the fact that the current heat exchange capacity of an outdoor heat exchanger can be visually reflected by the specific value between the first difference value and the second difference value, when the specific value between the first difference value and the second difference value is smaller than the first preset threshold value, it is shown that the heat exchange capacity of the outdoor unit of the air conditioner is insufficient, the heat exchanger is frosted, defrosting operation is needed, the air conditioner is controlled to enter the defrosting mode, and accuracy is high. Due to the fact that only a temperature sensor needs to be additionally arranged on the air conditioner to achieve the scheme, cost is low.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for controlling an air conditioner to enter a defrosting mode and the air conditioner. Background technique [0002] During the heating process of the air conditioner, frost is easy to form on the condenser of the outdoor unit. As the amount of frosting increases, the heating capacity of the air conditioner will gradually decrease. Perform defrosting. [0003] In the prior art, the air conditioner is generally controlled to enter the defrosting mode through the following methods: one method is timing defrosting, which only performs timing defrosting according to the preset time, and cannot accurately determine the best time to enter the defrosting mode , it is possible to enter the defrost mode even when defrosting is not required. Another way is to control through the combination of time and temperature. Based on the time control method, adding evaporation te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/62F24F11/65F24F2110/10
Inventor 申立亮杨瑞林张浩王伟平
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD