Multistage centrifugal compressor and cold water type air conditioning unit provided with same

A centrifugal compressor and inner cavity technology, which is applied in the direction of machines/engines, mechanical equipment, non-variable pumps, etc., can solve the problems of low efficiency of compressors, and achieve improved efficiency, uniform gas flow, and volume expansion Effect

Active Publication Date: 2014-05-21
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better control over compressed gas flows by allowing some parts (the refrigerant) within one stage of the machine to be used instead or combined with another part(s). By expanding this space between these different stages, it becomes easier to achieve evenly distributed supply of oxygen during compression compared to traditional methods where all the components have been changed.

Problems solved by technology

This patented describes an existing problem with current devices that use only one space between each stage (the main body) of a rotating machine called the back pressure plate). When there are multiple stages involved, it can result in uneven distribution or lacking enough oxygen during certain phases of operation due to limitations on how much gas needs to flow through this area.

Method used

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  • Multistage centrifugal compressor and cold water type air conditioning unit provided with same
  • Multistage centrifugal compressor and cold water type air conditioning unit provided with same

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Embodiment Construction

[0015] 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.

[0016] Such as figure 2 As shown, the multi-stage centrifugal compressor of this embodiment includes a casing 10 and a reflux device 20 disposed inside the casing 10. The inner wall of the casing 10 is formed with a first inner cavity 11, and the reflux device 20 is provided with a The inner cavity 11 is matched with the second inner cavity 21 , the first inner cavity 11 communicates with the second inner cavity 21 , and the first inner cavity 11 and the second inner cavity 21 form an air supply cavity of a multi-stage centrifugal compressor.

[0017] Without changing the volume of the reflux device itself, the original air supply cavity of the reflux device is transformed into an open second in

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Abstract

The invention provides a multistage centrifugal compressor and a cold water type air conditioning unit provided with the same. The multistage centrifugal compressor comprises a shell (10) and a return channel (20) arranged inside the shell (10); a first inner cavity (11) is formed in the inner wall of the shell (10); the return channel (20) is provided with a second inner cavity (21) matched with the first inner cavity (11); the first inner cavity (11) is communicated with the second inner cavity (21); the first inner cavity (11) and the second inner cavity (21) form an air supply cavity of the multistage centrifugal compressor. The cold water type air conditioning unit comprises the multistage centrifugal compressor. The invention aims to provide a multistage centrifugal compressor and a cold water type air conditioning unit provided with the same to solve the problem that the efficiency of the compressor is low due to a small size of the air supply cavity of the compressor in the prior art.

Description

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Claims

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Application Information

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Owner GREE ELECTRIC APPLIANCES INC
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