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Defrosting control method for variable-capacity compressor system

A variable-capacity compressor and control method technology, applied in the field of air conditioners, can solve problems such as affecting user comfort and a large reduction in indoor ambient temperature, and achieve the effects of increasing the amount of refrigerant circulation, avoiding a significant reduction, and improving the defrosting speed.

Active Publication Date: 2016-06-15
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing air-conditioning system uses the four-way valve reversing method to defrost. The defect of this defrosting method is that during the defrosting process, the low-temperature refrigerant absorbs heat from the room through the internal evaporator. If the defrosting time is too long, the Lead to a large drop in indoor ambient temperature, affecting user comfort

Method used

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  • Defrosting control method for variable-capacity compressor system
  • Defrosting control method for variable-capacity compressor system
  • Defrosting control method for variable-capacity compressor system

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Embodiment Construction

[0020] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0021] Combine Figure 1 to 3 As shown, in the present invention, the variable-capacity compressor system includes a variable-capacity compressor 1, a four-way valve 6, and a first control that is selectively connected to the variable-capacity control port of the variable-capacity compressor 1 through a variable-capacity switching valve. The tube 2 and the second control tube 3 can selectively introduce high pressure or low pressure through the first control tube 2 and the second control tube 3, thereby realizing the change of the number of working cylinders of the variable capacity compressor 1, that is, realizing the variable capacity. It should be noted that in the present invention, high pressure and low pressure are relative values, that is, the high pressure is greater than the low pressure, and both are between the suction pressure...

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Abstract

The invention provides a defrosting control method for a variable-capacity compressor system. The variable-capacity compressor system comprises a variable-capacity compressor, a four-way valve, as well as a first control tube and a second control tube which are selectively connected with a variable-capacity control port of the variable-capacity compressor through a variable-capacity switchover valve. The method comprises the step of after detecting and knowing that the variable-capacity compressor system runs in a defrosting manner and first preset conditions are reached, controlling the variable-capacity switchover valve to connect the first control tube or the second control tube with the variable-capacity control port, so as to enable the variable-capacity compressor to work in a first defrosting mode with a plurality of working cylinders. According to the defrosting control method for the variable-capacity compressor system, which is provided by the invention, after the defrosting running is completed and the first preset conditions are reached, the variable-capacity switchover valve is controlled to introduce a high pressure, thus the variable-capacity compressor works in the first defrosting mode with the plurality of working cylinders, and then a refrigerant circulation quantity is increased, a defrosting speed is increased, and the great lowering of an indoor environment temperature due to a too long defrosting time is avoided.

Description

Technical field [0001] The invention relates to the field of air conditioning, and in particular to a defrosting control method for a variable capacity compressor system. Background technique [0002] The existing air conditioning system uses a four-way valve reversing method for defrosting. The disadvantage of this defrosting method is that during the defrosting process, the low-temperature refrigerant absorbs heat from the room through the internal machine evaporator. If the defrosting time is too long, it will This leads to a large decrease in the indoor environment temperature, which affects user comfort. Summary of the invention [0003] The invention aims to provide a defrosting control method for a variable capacity compressor system capable of increasing the defrosting speed. [0004] The present invention provides a defrosting control method for a variable capacity compressor system. The variable capacity compressor system includes a variable capacity compressor, a four-wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02
CPCF25B47/025
Inventor 邹云辉叶务占林金煌陈锐东黄志辉罗波陈姣
Owner GREE ELECTRIC APPLIANCES INC
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