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Defrosting control method and defrosting control device for outdoor unit of air conditioning unit as well as air conditioning system

A technology of an air-conditioning unit and a control method, applied in the field of control, can solve the problems of false defrosting, untimely defrosting and ending defrosting, etc., so as to improve comfort, avoid untimely exit from defrosting, and prevent false defrosting operations. Effect

Active Publication Date: 2015-09-23
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a defrosting control method, device and air-conditioning system for the outdoor unit of an air-conditioning unit to solve the problems in the prior art that the air-conditioning unit does not start defrosting and ends defrosting in time, or even mis-defrosting occurs. problems, improve the heating comfort of air conditioning units

Method used

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  • Defrosting control method and defrosting control device for outdoor unit of air conditioning unit as well as air conditioning system
  • Defrosting control method and defrosting control device for outdoor unit of air conditioning unit as well as air conditioning system
  • Defrosting control method and defrosting control device for outdoor unit of air conditioning unit as well as air conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] see figure 1 , figure 1 It is a flow chart of a defrosting control method for an outdoor unit of an air conditioning unit provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0049] Step S101, obtaining the ambient temperature of the outdoor unit, the pipe temperature of the outdoor unit and the operating current of the outdoor fan;

[0050] Specifically, the ambient temperature of the outdoor unit is obtained through the ambient temperature sensor package of the outdoor unit of the air conditioner unit, the pipe temperature of the outdoor unit is obtained through the pipe temperature sensor package of the outdoor unit of the air conditioner unit, and the outdoor unit temperature of the outdoor unit of the air conditioner unit is obtained. The fan module obtains the running current of the outdoor fan.

[0051]Step S102, when the operating current of the outdoor fan reaches a preset current value and the tube temperatu...

Embodiment 2

[0062] see figure 2 , figure 2 It is a flow chart of another defrosting control method for an outdoor unit of an air conditioning unit provided by an embodiment of the present invention. Such as figure 2 As shown, the method includes:

[0063] Step S201, obtaining the ambient temperature of the outdoor unit, the pipe temperature of the outdoor unit and the operating current of the outdoor fan;

[0064] Step S202, when the operating current of the outdoor fan reaches a preset current value and the tube temperature reaches a preset defrosting temperature, control the air conditioner unit to start defrosting; the preset defrosting temperature is determined by the ambient temperature ;

[0065] Step S203, when the time for the operating current of the outdoor fan to reach a preset current value exceeds a first preset time, control the air conditioner unit to start defrosting;

[0066] Step S204, when the ambient temperature continues to be lower than the preset temperature...

Embodiment 3

[0073] see image 3 , image 3 It is a flow chart of another defrosting control method for an outdoor unit of an air conditioning unit provided by an embodiment of the present invention. Such as image 3 As shown, the method includes:

[0074] Step S301, obtaining the initial operating current of the outdoor fan before the compressor of the air conditioner is turned on;

[0075] Specifically, when the air conditioner unit is running, before the compressor is turned on, the outdoor fan is turned on prior to the compressor. At this time, the operating current of the outdoor fan is the maximum value of the normal operating current of the outdoor fan.

[0076] Step S302, when the product of the initial operating current and the first preset constant exceeds the preset current value, control the air conditioning unit to start defrosting;

[0077] Specifically, when the product of the initial operating current and the first preset constant exceeds the preset current value, it is...

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Abstract

The invention discloses a defrosting control method and a defrosting control device for an outdoor unit of an air conditioning unit as well as an air conditioning system. The method comprises the following steps: obtaining an environment temperature of the outdoor unit, a tube temperature of the outdoor unit and operation current of an outdoor fan; when the operation current of the outdoor fan reaches a preset current value and the tube temperature reaches a preset defrosting temperature, controlling the air conditioning unit to start defrosting; determining the preset defrosting temperature by the environment temperature; when the time that the operation current of the outdoor fan reaches the preset current value exceeds the first preset time, controlling the air conditioning unit to start defrosting; obtaining the operation current of the outdoor fan after the air conditioning unit starts defrosting; and when the operation current of the outdoor fan is smaller than the preset current value after the air conditioning unit starts defrosting, controlling the air conditioning unit to stop defrosting. According to the technical scheme provided by the invention, the heating comfort of the air conditioning unit can be improved.

Description

technical field [0001] The invention relates to the field of control technology, in particular to a defrosting control method and device for an outdoor unit of an air-conditioning unit and an air-conditioning system. Background technique [0002] In today's economic society, air conditioners are widely used because of their good cooling and heating effects. [0003] In winter, air conditioning is often needed for heating to create a more comfortable temperature indoors to resist the severe cold outside. When the air humidity is high in winter, after the air conditioner operates in heating mode for a period of time, the water vapor in the outdoor air will frost on the fins of the outdoor unit of the air conditioner, and then be frozen into ice cubes. Blockage of ice cubes will cause the refrigerant in the outdoor unit of the air conditioner to fail to evaporate, and the pressure will be too low, which will eventually cause the air conditioner unit to trip the low-pressure pr...

Claims

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Application Information

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IPC IPC(8): F24F11/02F24F1/06F24F13/22
CPCF24F1/06F24F11/30F24F11/42
Inventor 张长春罗永前吴少波寇晖彭伟威
Owner GREE ELECTRIC APPLIANCES INC
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