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Air conditioner divisional defrosting control method

A control method and sub-area technology, applied in heating and ventilation control systems, refrigerators, heating methods, etc., to improve work efficiency and performance, simple method, and avoid defrosting actions

Active Publication Date: 2007-06-06
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method that considers the impact of changes in environmental conditions in different regions on frosting, and sets different defrosting control parameters in different regions to avoid many unnecessary defrosting actions and The solution to the problem of incomplete defrosting in harsh environments

Method used

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  • Air conditioner divisional defrosting control method

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Embodiment Construction

[0013] Referring to Fig. 1, a method for controlling defrosting of an air conditioner in sub-regions, which includes the following steps:

[0014] 10. Measure the temperature Tcoil through the defrosting temperature sensor on the outdoor heat exchanger coil;

[0015] 11. Measure the outdoor ambient temperature Tair for defrosting;

[0016] 12. According to the ambient temperature Tair measured in step b, determine the ambient temperature coefficient C, wherein, when Tair<0°C, C=0.8, and when Tair≥0°C, C=0.6;

[0017] 13. Set the defrosting temperature switching dial q, and set different dials for different regions;

[0018] 14. When Tcoil and Tair satisfy the relationship Tcoil≤CTair-q, and run continuously for 3 minutes, the control system enters the defrosting mode.

[0019] The above air-conditioning sub-area defrosting control method also includes a step of dividing the frosting environment, that is, dividing each region of our country into a light frosting environment, ...

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Abstract

This invention relates to a defrosting method, which comprises the following steps: a, testing the temperature Tcoil by the defrosting temperature-sensing box in the outdoor heat exchange coil; b, testing the defrosting outdoor temperature Tair; c, making sure the environmental temperature factor C according to the Tair in step b, when the Tair<0 Deg.C, C=0.8; Tair>=0 Deg.C, C=0.6; d, setting different defrosting temperature switching codes q to different area; e, when Tcoil<=CTair-q, and running 3 minutes, the controlling system will operate the defrosting mode. Said invention uses the heat exchange coil temperature, environmental temperature and the preset factor to decide whether defrosting, so it can improve the working efficiency and property of the heat pump assembly.

Description

technical field [0001] The invention relates to a defrosting sub-area function control method of a heat pump air conditioner. Background technique [0002] my country has a vast territory, and the climatic conditions in different regions are quite different. Especially in winter, due to the cold wave activity, the temperature difference between the north and the south is very large, and the operation of the heat pump system in different regions is also very different. For example, when the ambient temperature is higher than 7 degrees for a long time In southern China, the heating period in winter is short, the heat demand is small, the unit generally does not frost during operation, and the heating performance coefficient is high, while the Yellow River Basin and its north, the winter temperature is low, the duration is long, and the heat demand is large. But now, the defrosting time of the air-cooled heat pump units of most manufacturers still adopts a uniform fixed value, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B47/02F24F11/00
Inventor 肖洪梅张桃
Owner GREE ELECTRIC APPLIANCES INC
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