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Air conditioner and control method thereof

A control method and air conditioner technology, applied to heating and ventilation control systems, refrigerators, heating methods, etc., can solve the problems of increased discomfort, long defrosting time, difficult to remove frost, etc., to achieve reasonable design and simple control method convenient effect

Inactive Publication Date: 2012-10-10
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the outdoor heat exchanger absorbs heat from the outdoor air, the temperature around the outdoor heat exchanger is low, and the water vapor in the air will condense into frost and adhere to the surface of the outdoor heat exchanger, which affects the heat transfer capacity of the outdoor heat exchanger. Decreased heating capacity, affecting people's comfort
[0004] In order to solve the defrosting problem of air conditioners, most air conditioners currently use four-way valve reversing control. Stop heating and increase people's discomfort; during the defrosting process, because the frost at the bottom of the outdoor heat exchanger is difficult to remove, when the upper part has been defrosted, you must wait until the lower part of the heat exchanger is completely defrosted before you can enter In normal heating operation, the defrosting time is longer; in addition, some enterprises currently adopt the four-way valve non-reversing defrosting method, but the air supply temperature of the indoor unit is low during the defrosting process, and there is a phenomenon of blowing cool wind. All kinds of people's discomfort

Method used

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  • Air conditioner and control method thereof
  • Air conditioner and control method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] The air conditioner of the present invention comprises an indoor heat exchanger 1, an outdoor heat exchanger or 10 and 11, a compressor 13, and a throttling device 3; The machine 13, the four-way valve 14, the indoor heat exchanger 1, and the throttling device 3 are connected in series in sequence; a two-way valve 4 connected in parallel with the throttling device 3, one end of the two-way valve 4 is connected to the outlet of the indoor heat exchanger 1, The other end is connected to the hot gas bypass circuit I to form the bypass circuit II; the hot gas bypass circuit I has a two-way valve 2, which controls the switch of the bypass circuit I, the control part 6 and the one-way valve 5 for adjusting the flow rate, and the hot gas bypass circuit In the bypass circuit I, there is another branch connected to the control part 15 for regulating the flow rate, and the other end of the control part 15 for regulating the flow rate leads to the suction port of the compressor 13,...

Embodiment 2

[0050] Embodiment 2 has the same principle as Embodiment 1, except that the outdoor heat exchanger is composed of two different flow paths 16 and 17 of the same heat exchanger;

[0051] The working principle of the present invention is as follows:

[0052] Such as figure 2As shown, the air conditioner operates in the heating mode, and the low-temperature and low-pressure refrigerant is absorbed in the second flow path 17 of the outdoor heat exchanger and the first flow path 16 of the outdoor heat exchanger in the two different flow paths 16 and 17 of the heat exchanger. After the heat evaporates, it enters the compressor 13, and the refrigerant vapor compressed to high temperature and high pressure enters the indoor heat exchanger 1 through the four-way reversing valve 14. The refrigerant vapor releases heat in the indoor heat exchanger 1 and condenses to become a high temperature and high pressure liquid. The gas-liquid mixture that is throttled and depressurized by the thr...

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Abstract

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises an indoor heat exchanger (1), a first electromagnetic valve (2), a throttling gear (3), a second electromagnetic valve (4), a one-way valve (5), a throttling gear (6), a two-position three-way directional control valve (7), a third electromagnetic valve (8), a fourth electromagnetic valve (9), two outdoor heat exchangers (10 and 11), a compressor (13) and a four-way valve (14). The invention provides an air conditioner by which people enjoy a more comfortable environment. The air conditioner is reasonable in design, convenient and practical. The control method of the air conditioner is simple and convenient. The air conditioner which adopts hot gas bypass and independent defrosting mode linked with indoor air supply temperature and indoor coil temperature and operates at a rise frequency in a defrosting process and the control method of the air conditioner are provided.

Description

technical field [0001] The invention relates to an air conditioner and its control method, in particular to an air conditioner which operates in a hot gas bypass and independent defrosting mode linked with the indoor air supply temperature and the indoor coil temperature and its control method. The invention belongs to the modification technology of an air conditioner and a control method thereof. Background technique [0002] During the heating operation of the heat pump air conditioner, the refrigerant exchanges heat with the outdoor air through the outdoor heat exchanger, absorbs heat from the outdoor air and evaporates, and the compressor compresses the low-temperature and low-pressure refrigerant into high-temperature and high-pressure refrigerant vapor, which enters the room. The heat exchanger releases heat; through the indoor heat exchanger, the heat is released to heat the indoor air, so that people can enjoy a more comfortable environment. [0003] Because the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02F25B41/04F25B47/02
Inventor 张桃赖想球陈超新梁贤棣
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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