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Refrigerant circulation system and control method

A refrigerant circulation system and control method technology, applied in the field of compressors, can solve problems such as air suspension bearing damage, pressure imbalance, etc., and achieve the effect of ensuring stable operation

Active Publication Date: 2020-11-13
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After research, it is found that the air suspension compressor in the related art is prone to pressure imbalance during the switch-on process, which in turn leads to the problem of damage to the air suspension bearing

Method used

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  • Refrigerant circulation system and control method
  • Refrigerant circulation system and control method
  • Refrigerant circulation system and control method

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Embodiment Construction

[0053] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is illustrative only, and in no way restricts the disclosure, its application or uses. The present disclosure can be implemented in many different forms and is not limited to the embodiments described here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as illustrative only and not as limiting, unless specifically stated otherwise.

[0054] "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distin...

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Abstract

The invention relates to a refrigerant circulation system and a control method. The refrigerant circulation system comprises a first compressor (1), a gas storage tank (5), an evaporator (3), a firstregulating valve (7) and a controller (8), wherein the first compressor (1) comprises a shell (12), a compressor rotor (14) located in the shell (12) and gas suspension bearings (13) supporting the compressor rotor (14); the gas storage tank (5) communicates with gas inlets of the gas suspension bearings (13) and is arranged to provide gaseous refrigerant to the gas suspension bearings (13); the evaporator (3) is located in a refrigerant circulation loop where the first compressor (1) is located, communicates with a gas suction port of the first compressor (1), and communicates with the gas storage tank (5) through a bypass pipe; the first regulating valve (7) is located on the bypass pipe, and arranged to regulate the flow of the gaseous refrigerant bypassing the gas storage tank (5) to the evaporator (3); and the controller (8) is in signal connection with the first regulating valve (7) and arranged to adjust the opening of the first regulating valve (7) according to the system gas supply pressure difference. The embodiment can maintain gas supply stability of the gas suspension bearings.

Description

technical field [0001] The present disclosure relates to the field of compressors, in particular to a refrigerant circulation system and a control method. Background technique [0002] The chiller is the main model of the central air-conditioning system. According to statistics, the energy consumption of the chiller accounts for more than 60% of the total energy consumption of the air-conditioning system, and it is the main power-consuming equipment. Therefore, improving the energy efficiency of chillers is a key measure to improve the energy efficiency of central air-conditioning systems. At present, small cooling capacity (30-300RT) chillers mostly use scroll or screw compressors, both of which are volumetric compressors. Due to the limitation of volumetric efficiency, energy efficiency has reached the bottleneck. The use of centrifugal compressors is to improve the small cooling capacity. The performance of chillers is an important way, and the miniaturization of centrif...

Claims

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Application Information

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IPC IPC(8): F25B1/00F25B31/00F25B41/06F25B49/02
CPCF25B1/00F25B31/00F25B49/02Y02B30/70
Inventor 黄成武周宇钟瑞兴刘贤权
Owner GREE ELECTRIC APPLIANCES INC