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Anti-freezing control method and device for air conditioner heat exchanger

A control method and a technology of a control device, which are applied in the direction of heating methods, space heating and ventilation, heating and ventilation control systems, etc., can solve problems such as easy frosting and icing of indoor heat exchangers, affecting the normal operation of air conditioners, etc. Achieve the effect of efficient defrosting and resource utilization

Inactive Publication Date: 2014-08-13
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

However, when the existing air conditioner is in normal cooling operation at a lower temperature, the indoor heat exchanger is prone to frost and ice, thereby affecting the normal operation of the air conditioner

Method used

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  • Anti-freezing control method and device for air conditioner heat exchanger
  • Anti-freezing control method and device for air conditioner heat exchanger
  • Anti-freezing control method and device for air conditioner heat exchanger

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Embodiment Construction

[0036] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] The core idea of ​​the present invention is to determine the time distribution of cooling operation and stop of the outdoor unit according to the two parameters of the tube temperature and time of the indoor heat exchanger, so as to control the heat exchanger of the indoor unit not to freeze and to maximize the cooling operation.

[0038] Such as figure 1 As shown, the air conditioner structure of the implementation environment of the present invention is proposed. The air conditioner comprises a compressor 10, an outdoor heat exchanger 20 of an outdoor unit, a throttling device 30, and an indoor heat exchanger 40 of an indoor unit; 1. A closed system in whic...

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Abstract

The invention discloses an anti-freezing control method for an air conditioner heat exchanger. The control method comprises the steps of acquiring an pipe temperature T1 of an indoor heat exchanger; determining a preset temperature region where the pipe temperature T1 of the indoor heat exchanger is located and a time threshold value N1 corresponding to the temperature region; recording the accumulated time t1 when the pipe temperature of the indoor heat exchanger is continuously positioned in the determined temperature region; if the determined accumulated time t1 is longer than or equal to the time threshold value N, controlling an outdoor unit of an air conditioner to stop running and an indoor unit to enter a defrosting mode. The invention also discloses an anti-freezing control device for the air conditioner heat exchanger. The low-temperature refrigeration effect of the common air conditioner can be achieved without a low-temperature refrigeration device, and a refrigeration demand for extremely low temperature of an outdoor environment is met; furthermore, multiple conditions for entering the defrosting mode are set, and each condition corresponds to different defrosting parameters, so that high-efficiency defrosting can be realized, and resources are effectively used.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a control method and device for preventing freezing of a heat exchanger of an air conditioner. Background technique [0002] In actual use of the air conditioner, generally speaking, when the outdoor ambient temperature is high, the air conditioner is required to operate in a cooling mode; when the outdoor ambient temperature is low, the air conditioner is required to operate in a heating mode. However, for some special occasions, such as large computer rooms, equipment, dance halls, etc., it is still necessary to operate the cooling mode when the outdoor ambient temperature is low. However, when the existing air conditioner is in normal cooling operation at a lower temperature, the indoor heat exchanger is prone to frost and ice, thereby affecting the normal operation of the air conditioner. Contents of the invention [0003] The main purpose of the present invention is to pro...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 黄迎光韦汉儒马勇
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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