Multi-split air conditioner and defrosting method thereof

A multi-connected air conditioner and indoor unit technology, which is applied to air conditioning systems, heating methods, mechanical equipment, etc., can solve problems such as the influence of air outlet temperature and user experience, so as to prolong the service life, solve the serious attenuation of heating effect, improve The effect of user experience

Inactive Publication Date: 2020-06-02
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general defrosting control, it is necessary to stop the compressor, change the direction of the four-way valve and then switch to cooling mode. This mode actually cools the indoor unit during defrosting, which has a great impact on the outlet air temperature and affects the user experience.

Method used

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  • Multi-split air conditioner and defrosting method thereof
  • Multi-split air conditioner and defrosting method thereof
  • Multi-split air conditioner and defrosting method thereof

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Embodiment Construction

[0045] see in conjunction figure 1 and figure 2 As shown, according to the embodiment of the present application, the multi-split air conditioner includes an outdoor unit and multiple indoor units arranged in parallel, the outer unit includes a compressor 1, an outdoor heat exchanger 2 and a four-way valve 3, and the inner unit includes a bypass pipeline 4 and the indoor heat exchange pipeline 5, the indoor heat exchange pipeline 5 is provided with an indoor heat exchanger 6 and a throttle valve 7, the bypass pipeline 4 is provided with a first control valve 9, the indoor heat exchange pipeline 5 and The outdoor heat exchange pipeline 8 where the outdoor heat exchanger 2 is located is connected in series with the bypass pipeline 4 to form a parallel pipeline. The first end of the parallel pipeline is connected to the first port of the four-way valve 3, and the first end of the parallel pipeline is The two ends are connected to the second interface of the four-way valve 3 thr...

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Abstract

The invention provides a multi-split air conditioner and a defrosting method thereof. The defrosting method of the multi-split air conditioner comprises the steps that whether a defrosting condition is met or not is judged; when the defrosting condition is met, the air conditioner is controlled to enter a defrosting mode; information of an idle internal unit is obtained; the idle internal unit iscontrolled to run; reversing of a four-way valve (3) is controlled, and a control valve is adjusted to make a working internal unit and an external unit serve as the condensation side together and theidle internal unit serve as the evaporation side. According to the multi-split air conditioner and the defrosting method thereof, a compressor can be prevented from being stopped during defrosting, it is ensured that the working internal unit normally produces heat, and the user experience is improved.

Description

technical field [0001] The present application relates to the technical field of air conditioning, in particular to a multi-connected air conditioner and a defrosting method thereof. Background technique [0002] Multi-connected air conditioners are widely used in engineering and various occasions. Ordinary multi-connected units mostly adopt the method of combining one outdoor unit with multiple indoor units. In general defrosting control, it is necessary to stop the compressor, switch the direction of the four-way valve and then switch to cooling mode. This mode actually cools the indoor unit during defrosting, which has a great impact on the outlet air temperature and affects the user experience. Contents of the invention [0003] Therefore, the technical problem to be solved in this application is to provide a multi-connected air conditioner and its defrosting method, which can avoid compressor shutdown during defrosting, while ensuring normal heating of the working in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F3/06F24F11/41F24F11/70F24F11/61F24F11/64F24F120/10F24F110/12F24F140/20
CPCF24F3/065F24F11/41F24F11/61F24F11/64F24F11/70F24F2110/12F24F2120/10F24F2140/20
Inventor 李海燕赵翔安汪楠吴川集曾海源
Owner GREE ELECTRIC APPLIANCES INC
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