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Air conditioning system and defrosting control method

A control method and air conditioner technology, applied in heating and ventilation control systems, heating and ventilation safety systems, refrigerators, etc., can solve the problems of stopping heating indoor temperature, large fluctuations, etc.

Inactive Publication Date: 2016-06-15
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the objects of the present invention is to provide an air-conditioning system to solve the problem that the indoor heating is stopped or the indoor temperature fluctuates greatly when defrosting is used in the prior art

Method used

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  • Air conditioning system and defrosting control method
  • Air conditioning system and defrosting control method
  • Air conditioning system and defrosting control method

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Embodiment Construction

[0014] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

[0015] Such as figure 1 As shown, an air conditioner system is disclosed, including an indoor heat exchanger 2, a throttling device, an outdoor heat exchanger 3, a four-way reversing valve 4, and an indoor heat exchanger connected in sequence on the refrigerant circulation path. 2 and the outdoor heat exchanger 3 are communicated with the compressor 1 through the four-way reversing valve 4; wherein, the first port a of the four-way reversing valve 4 communicates with the exhaust port of the compressor 1, Its second interface b communic...

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Abstract

The invention discloses an air conditioning system and a defrosting control method. The method includes the steps that in the heating process, when it is detected that the temperature of an outdoor heat exchanger is lower than a preset defrosting threshold value, a first electromagnetic valve and a third electromagnetic valve are controlled to be opened, a second electromagnetic valve is controlled to be closed, and a heating defrosting mode is started; after refrigerants passing through the outdoor heat exchanger and an indoor heat exchanger enter a heat accumulator in sequence to absorb heat, the refrigerants enter a compressor and then are compressed and discharged, and the discharged refrigerants enter the indoor heat exchanger for heating and enter the outdoor heat exchanger for defrosting correspondingly through a four-way reversing valve; and in the heating defrosting process, the work frequency of the compressor, the fan rotating speed of the outdoor heat exchanger, the fan rotating speed of the indoor heat exchanger and the opening degree of a throttling device are regulated and controlled. Heat, which dissipates into the air originally, of the compressor is stored in the heat accumulator, and the heat of the heat accumulator can be used for defrosting and also heating a room. The defrosting speed can be increased and the defrosting time can be shortened due to the fact that a storage heat source supply extra heat for defrosting. Meanwhile, part of the stored heat is used for continuous indoor heating, so that temperature fluctuation is reduced.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to an air-conditioning system and a defrosting control method. Background technique [0002] When the household air conditioner is heating, the outdoor heat exchanger is used as an evaporator. The temperature is low, and frosting will occur. It needs to defrost after running for a period of time. During the defrosting, it cannot provide heat to the room, resulting in the continuous heating of the room. , temperature fluctuations. Contents of the invention [0003] One of the objectives of the present invention is to provide an air-conditioning system to solve the problems in the prior art that the indoor heating stops or the indoor temperature fluctuates greatly when defrosting is used. [0004] In some illustrative embodiments, the air conditioner system includes an indoor heat exchanger, a throttling device, an outdoor heat exchanger, a four-way reversing val...

Claims

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Application Information

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IPC IPC(8): F24F11/02F25B47/02
Inventor 张明杰于世鹏展媛媛袁俊军丁爽
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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