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Multiple on-line defrosting method and device of air conditioning system and air conditioner

An air-conditioning system and multi-connection technology, which is applied in the direction of reversible cycle compressors, compressors, refrigerators, etc., can solve the problems of human body discomfort and large fluctuations in room temperature, and achieve the effect of human body feeling comfortable and small temperature fluctuations

Inactive Publication Date: 2015-07-01
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of large room temperature fluctuations and uncomfortable feeling of the human body during multi-line defrosting of the existing air-conditioning system, the present invention provides a multi-line air-conditioning system that optimizes the multi-line defrosting of the air-conditioning system, has small room temperature fluctuations, and is more comfortable. Frost method and device and air conditioner

Method used

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  • Multiple on-line defrosting method and device of air conditioning system and air conditioner
  • Multiple on-line defrosting method and device of air conditioning system and air conditioner

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Embodiment 1

[0045] Such as figure 1 As shown, the embodiment of the present invention provides a multi-line defrosting method for an air-conditioning system, including the following steps:

[0046] S100, the four-way valve controlling the air conditioning system is switched from heating mode to defrosting (cooling) mode;

[0047] S200, controlling the electronic expansion valve corresponding to the powered-on internal unit to close, and controlling the electronic expansion valve corresponding to the powered-off internal unit to open;

[0048] S300, the refrigerant compressed by the compressor is sent to the outdoor heat exchanger through the four-way valve;

[0049] In S400, when the refrigerant is sent to the outdoor side heat exchanger, it exchanges heat with the surrounding outdoor air for defrosting.

[0050] In S500, the refrigerant after heat exchange passes through the filter, the outdoor electronic expansion valve, the liquid pipe valve and the opened electronic expansion valve ...

Embodiment 2

[0075] The embodiment of the present invention also provides a multi-line defrosting device for an air-conditioning system. The defrosting process of this device is similar to the defrosting process described in Embodiment 1. Therefore, the implementation of this device can refer to the implementation of the aforementioned method, and repeat I won't repeat them here.

[0076] see figure 2 As shown, it is a composition diagram of an embodiment of the multi-line defrosting device of the air-conditioning system of the present invention. The multi-line defrosting device of the air-conditioning system of the present invention includes a compressor 1, a four-way valve 2, and an outdoor heat exchanger 3. Filter 4, outdoor electronic expansion valve 5, gas-liquid separator 14, liquid pipe valve 6 and gas pipe valve 13;

[0077] The four-way valve 2 is respectively connected with the compressor 1, the outdoor heat exchanger 3, the gas-liquid separator 14 and the air pipe valve 13;

...

Embodiment approach

[0084] As a possible implementation, the internal machine includes a first internal machine 8, a second internal machine 10 and a third internal machine 12;

[0085] The electronic expansion valve corresponding to the first internal unit 8 is the first electronic expansion valve 7;

[0086] The electronic expansion valve corresponding to the second internal unit 10 is the second electronic expansion valve 9;

[0087] The electronic expansion valve corresponding to the third internal unit 12 is the third electronic expansion valve 11 .

[0088] The present invention also provides an air conditioner, including the multi-connected defrosting device of the air conditioning system as described in the second embodiment.

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Abstract

The invention provides a multiple on-line defrosting method and a device of an air conditioning system and an air conditioner, wherein the method comprises the following steps: a four-way valve of the air conditioning system is controlled to convert from a heating mode to a defrosting (refrigeration) mode; an electronic expansion valve corresponding to a started inner unit is controlled to be closed; an electronic expansion valve corresponding to a closed inner unit is controlled to be opened; a refrigerant compressed by a compressor is transmitted to an outdoor side heat exchanger through the four-way valve, and is exchanged heat with surrounding outdoor air when being transmitted to the outdoor side heat exchanger so as to achieve the defrosting purpose; and the refrigerant after the heat exchange enters the closed inner unit through a filter, an outdoor electronic expansion valve, a liquid pipe valve and the started electronic expansion valve in sequence. The method can keep a certain surface temperature of the heat exchanger of the started inner unit, and can keep no drop of indoor temperature; and the air conditioning system can normally supply heat after the defrosting in 1-2 minutes, so that the fluctuation of room temperature is little, and human bodies feel more comfortable.

Description

technical field [0001] The invention relates to the field of air conditioning and refrigeration, in particular to a multi-line defrosting method and device for an air conditioning system and an air conditioner. Background technique [0002] When the multi-line defrosting of the ordinary air conditioning system is performed, the four-way valve reversing air conditioning system is in the cooling mode, and the heat exchangers of all indoor units will become evaporators, and the temperature of the heat exchangers will drop to -20°C or even lower. The room temperature will also drop by 2-5°C, and the four-way valve will switch to the air-conditioning system again. The air-conditioning system is in the heating mode. Because the temperature of the indoor heat exchanger is low, the indoor unit will have a heating effect after 3-5 minutes; the room temperature will drop during the whole process. 3 ~ 6 ℃, affecting the comfort of the human body. Contents of the invention [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B13/00
CPCF25B47/02F25B13/00
Inventor 傅英胜黄春宋培刚刘合心陈泽彬莫赤虎刘群波
Owner GREE ELECTRIC APPLIANCES INC
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