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Centrifugal compressor

A technology of centrifugal compressors and impellers, which is applied to mechanical equipment, machines/engines, liquid fuel engines, etc., and can solve the problems of large drop in total pressure loss and other problems

Inactive Publication Date: 2012-05-02
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with respect to the functions achieved by the short guide vanes, that is, the rectifying effect, friction force, and the reduction of the area of ​​the flow path, the flow velocity of the fluid on the upstream side of the diffuser is relatively high, so the reduction of the area of ​​the flow path The increase in flow velocity and the increase in total pressure loss caused by friction are greater than the decrease in total pressure loss achieved by rectification
Therefore, disposing short guide vanes on the upstream side of the diffuser often brings adverse effects

Method used

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Embodiment Construction

[0018] Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings.

[0019] For example, if Figure 1~Figure 3 As shown, the centrifugal compressor 1 of the present invention is equipped with a substantially conical impeller 3 and a diffuser 4 composed of a plurality of guide vanes 5, wherein the impeller 3 is not shown in the center of the hollow disk-shaped housing 2. The bearings are rotatably supported and are called a turbine, and the guide vanes 5 are annularly arranged on the downstream side (outer peripheral side) of the impeller 3 in the casing 2 so as to surround the impeller 3 .

[0020] The impeller 3 is configured by providing a plurality of inclined vanes 3b called blades on the outer periphery of a substantially conical hub 3a supported by a rotating shaft not shown. The plurality of vanes 3b provided in the impeller 3 are arranged in a state inclined at substantially the same inclination angle with respec...

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Abstract

The invention provides a centrifugal compressor, which comprises an impeller supported in a housing to be rotated freely, and a diffuser consisting of plurality of guide vanes and positioned on the downstream side of the impeller. At least one short guide vane is arranged between two adjacent long guide vanes. The height of the short guide vane is configured to be increasing from the front edge to the rear edge thereof. Therefore, the rectifying function can be realized through the short guide vanes. Meanwhile, the friction force or the area of a flow path is reduced.

Description

technical field [0001] The present invention relates to a centrifugal compressor including an impeller rotatably supported in a housing, and a plurality of guide vanes arranged in the housing so as to surround the impeller. Background technique [0002] Among the conventional centrifugal compressors, there are various forms of centrifugal compressors. In a general centrifugal compressor, a centrifugal impeller called a turbine and a centrifugal impeller that is supported in a casing to be rotatable and a fan to surround the impeller are provided. The way to configure the diffuser on its downstream side. In this impeller, a plurality of vanes called blades are provided on the outer periphery of a hub supported by a rotating shaft. [0003] The mechanism for increasing the pressure of fluid using this centrifugal compressor is as follows. First, the fluid to be compressed is sucked from the inlet side of the casing by the rotation of the impeller. At this time, the fluid su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28F04D29/44
Inventor 出口智如
Owner KOBE STEEL LTD