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Multi-stage compressor and refrigerating system provided with same

A refrigeration system and compressor technology, which is applied to mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as unstable operation of compressors, low cycle efficiency of refrigeration systems, and large aerodynamic noise, and achieve a wider range of stable operation , Increase the gas flow rate, reduce the effect of enthalpy

Inactive Publication Date: 2015-12-02
GREE ELECTRIC APPLIANCES INC
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  • Description
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Problems solved by technology

[0008] The main purpose of the present invention is to provide a multi-stage compressor and a refrigeration system with it, so as to solve the problems in the prior art that the compressor is prone to unstable operation, the cycle efficiency of the refrigeration system is low, and the aerodynamic noise is large

Method used

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  • Multi-stage compressor and refrigerating system provided with same
  • Multi-stage compressor and refrigerating system provided with same
  • Multi-stage compressor and refrigerating system provided with same

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] Such as figure 1 As shown, the multi-stage compressor of Embodiment 1 is a two-stage compressor, and the two-stage compressor includes a first-stage compression chamber 13 , a second-stage compression chamber 14 , a first-stage diffuser 41 and an air supply structure 50 . Wherein, the first-stage compression chamber 13 is provided with a first-stage impeller, and the second-stage compression chamber 14 is provided with a second-stage impeller. An air passage 20 is provided between the first-stage compression chamber 13 and the second-stage compression chamber 14 . The first-stage diffuser 41 is disposed in the gas passage 20 . A communication passage is provided between the second-sta...

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Abstract

The invention provides a multi-stage compressor and a refrigerating system provided with the same. The multi-stage compressor comprises a plurality of stages of compression cavities, diffusers (40) and air supplying structures (50). An impeller is arranged in each stage of compression cavity. An air passing channel (20) is arranged between every two adjacent stages of compression cavities. Every two adjacent stages of compression cavities are divided into an upstream compression cavity (11) and a downstream compression cavity (12). The diffusers (40) are arranged in the air passing channels (20). The air supplying structures (50) are arranged on at least one air passing channel (20) and located between the diffusers (40) corresponding to the upstream compression cavities (11) and the downstream compression cavities (12), or the air supplying structures (50) are located in the diffusers (40). By the adoption of the technical scheme, the problems that in the prior art, a compressor is prone to operating unstably, the circulating efficiency of a refrigerating system is low, and pneumatic noise is high can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of multi-stage compressors, in particular, to a multi-stage compressor and a refrigeration system having the same. Background technique [0002] At present, the four major components of a refrigeration system include a centrifugal compressor, an evaporator, a condenser, and a throttling device. In order to improve the cycle efficiency of the refrigeration system, the form of multi-stage compression and intermediate air supplement is usually used to change the one-stage throttling into multi-stage throttling, and set an economizer between the throttling devices. Specifically, taking the cycle of two-stage compression and intermediate air supply as an example, the one-stage throttling is changed to two-stage throttling, and an economizer is installed between the throttling devices, and the liquid refrigerant at the bottom of the condenser passes through the first-stage throttling After flow, the gas-liquid mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D1/06F04D29/42F04D29/44F04D29/66
Inventor 李宏波谢蓉张治平钟瑞兴蒋楠蒋彩云陈玉辉刘建飞黄宝乾张竞周义
Owner GREE ELECTRIC APPLIANCES INC
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