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Vane type diffuser with horseshoe-shaped diffuser channels

A diffuser, horseshoe-shaped technology, applied in non-variable displacement pumps, machines/engines, components of pumping devices for elastic fluids, etc., can solve difficult machining accuracy, high cost, tubular diffuser machining Difficulty and other problems, to achieve the effect of improving stable working margin and improving efficiency

Active Publication Date: 2014-04-23
中科航星科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tubular diffuser has problems such as difficult processing, high cost, and difficult to guarantee the processing accuracy. Therefore, there is an urgent need for a new diffuser structure layout that can take into account the aerodynamic performance and processing cost of the diffuser.

Method used

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  • Vane type diffuser with horseshoe-shaped diffuser channels
  • Vane type diffuser with horseshoe-shaped diffuser channels
  • Vane type diffuser with horseshoe-shaped diffuser channels

Examples

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the examples, the following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0019] Such as figure 1 As shown, the vane diffuser with a horseshoe-shaped diffuser passage in the present invention includes a diffuser disc 3, a diffuser cover 2 and a number of built-in diffuser blades, and is suitable for a high-pressure ratio centrifugal compressor. Both the diffuser wheel cover 2 and the diffuser disc 3 include a radial part and an axial part, and the axial part is arranged on the outer circumference part of the radial part, and there is a smooth transition connection between the two, so The radial part of the diffuser wheel cover 2, the radial part of the diffuser disc 3 and the radial diffuser vane 4 constitute a radial diffuser, the axial part of the diffuser wheel cover 2, The axial part of the diffuser disc 3 an...

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PUM

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Abstract

The invention discloses a vane type diffuser with horseshoe-shaped diffuser channels and belongs to the technical field of medium and small type aero-engine compressors. The vane type diffuser is characterized by being formed by a series of vanes which comprise the horseshoe-shaped diffuser channels and are uniformly distributed along the circumferential direction; the two adjacent diffuser channels are communicated with each other; dovetail-shaped inlet front edges are formed on the side of a wheel cover. The vane type diffuser with the horseshoe-shaped diffuser channels can be applied to a medium and small type aero-engine high-pressure ratio centrifugal compressor directly and accordingly the efficiency and the stability work margin of the centrifugal compressor can be greatly improved under the condition that the machining and manufacturing cost of the compressor diffuser is not increased.

Description

technical field [0001] The invention relates to a vane diffuser with a horseshoe-shaped diffuser channel, which can greatly improve the efficiency and stable working margin of a centrifugal compressor without increasing the difficulty of processing and manufacturing cost of the diffuser, and is especially suitable for medium High pressure ratio centrifugal compressor for small aero-engine. Background technique [0002] The compressor is one of the most critical and difficult technologies in the engine development process. Due to a series of advantages such as a wide working range, fewer parts, high reliability and strong resistance to foreign objects, the high-pressure ratio centrifugal compressor is widely used in small and medium-sized aviation widely used in engines. However, the increase in the pressure ratio of the centrifugal compressor makes the air velocity at the outlet of the centrifugal impeller high and very uneven. In addition, the width of the outlet of the ce...

Claims

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Application Information

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IPC IPC(8): F04D29/44
Inventor 卢新根张燕峰韩戈赵胜丰朱俊强
Owner 中科航星科技有限公司
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