Method for controlling defrosting of air conditioner

A control method and technology of an air conditioner, which is applied in the control of heating conditions and the field of air conditioner defrosting control, can solve the problems of affecting the heat transfer of the condenser, reducing the comfort of users, and affecting the heating effect, etc., to achieve rapid cooling heat, improve the heating effect, and meet the requirements of comfort

Inactive Publication Date: 2014-07-23
GUANGDONG MIDEA GRP WUHU REFRIGERATING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of direct shutdown, the defrosting of the heat exchange tube cannot be performed
[0003] In the prior art, when the air conditioner is turned off in the heating mode, if there is frost on the condenser and the defrosting cannot be performed, it will affect the heat exchange of the condenser when the air conditioner is turned on next time, thereby affecting the heating effect ; In this case, if the user needs to increase the temperature in a short period of time, the user's demand for rapid heating cannot be met when the power is turned on, thereby reducing the user's comfort

Method used

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  • Method for controlling defrosting of air conditioner
  • Method for controlling defrosting of air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The aforementioned control conditions remain unchanged, and a better solution is: if the system detects that the temperature T2 in the middle of the evaporator has dropped by more than 3°C within the last 10 minutes before receiving the command to turn off the air conditioner, it will start the defrosting mode to ensure that the defrosting is clean. Turn off the air conditioner system when finished.

Embodiment 2

[0031] The aforementioned control conditions remain unchanged, and a better solution is: if the system detects that the temperature T2 in the middle of the evaporator drops by <1°C within the last 10 minutes before receiving the instruction to turn off the air conditioner, the system will consider that there is no more frosting. It does not affect the restart of the air conditioner, and the air conditioner system can be directly shut down without defrosting.

Embodiment 3

[0033] The aforementioned control conditions remain unchanged, and the more optimal solution is: within the last 10 minutes before receiving the command to turn off the air conditioner, there has been a defrosting process, the system will consider the defrosting to be clean, and it will not affect the restart of the air conditioner. Turn off the air conditioner system.

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Abstract

The invention discloses a method for controlling defrosting of an air conditioner. A control strategy comprises the steps that if a system detects that the temperature (T2) of the middle of an evaporator drops by 1-8 DEG C within the last 8-12 min before receiving an air conditioner switch-off instruction, a defrosting mode is started, and an air conditioner system is switched off after the defrosting process is completed; if the system detects that the temperature (T2) of the middle of the evaporator drops by less than 1 DEG C within the last 8-12 min before receiving the air conditioner switch-off instruction, or one defrosting process is conducted within the last 8-12 min before the air conditioner switch-off instruction is received, and the air conditioner system is switched off directly. By the adoption of the technical scheme, defrosting of the air conditioner is controlled according to running time of the system and temperature conditions, the heating effect of the air conditioner is improved, rapid heating is realized when the air conditioner is switched on again, and the requirement of a user for comfort in the using process is met.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and relates to the control technology of the heating working condition of the air conditioner. More specifically, the present invention relates to a defrosting control method for an air conditioner. Background technique [0002] During the working process of the air conditioner in the heating mode, frost will be formed on the heat exchange tube of the condenser, which will reduce the heat exchange efficiency and affect its heating effect, so it needs to be defrosted. During normal operation, the air conditioner itself has the function of defrosting, and defrosting is carried out according to certain rules. However, in the case of direct shutdown, the defrosting of the heat exchange tubes cannot be performed. [0003] In the prior art, when the air conditioner is turned off in the heating mode, if there is frost on the condenser and the defrosting cannot be performed, it will affect the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F25B47/02
Inventor 申孟亮
Owner GUANGDONG MIDEA GRP WUHU REFRIGERATING EQUIP CO LTD
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