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Compressor housing

A compressor shell and shell technology, which is applied in the direction of mechanical equipment, machine/engine, liquid fuel engine, etc., can solve the problems of reduced flow area, large refrigerant flow rate, and increased compression loss, so as to reduce manufacturing costs and increase The flow area and the effect of reducing the pressure difference

Inactive Publication Date: 2014-06-18
SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the previous design of the compressor shell, in order to improve the strength of the shell, it was often considered to increase the wall thickness of the shell. The manufacturing cost is increased; secondly, in the previous design, the flow area of ​​the upper and lower sides of the motor in the compressor is determined by the shape of the stator punching sheet. When designing the motor, in order to improve the efficiency, the trimming of the stator is smaller, but this reduces the flow area. The area, the pressure difference between the upper and lower sides of the motor is large, the overcompression loss of the compressor increases, and the efficiency decreases, especially when the compressor is running in high-efficiency conditions, the flow of refrigerant is large, and the impact of compression loss is greater
Therefore, it is difficult to reduce the efficiency loss caused by the pressure difference between the upper and lower sides of the motor without changing the stator punching structure

Method used

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Embodiment Construction

[0011] Such as figure 1 As shown, the compressor housing of the present invention includes a housing body 1 and a plurality of ribs 2, which are arranged on the surface of the housing body 1 at intervals or at intervals along the axial or radial direction of the housing body 1. On the surface of the casing body 1, the ribs 2 are concave and convex to form a plurality of strip-shaped long grooves on the surface of the inner ring of the casing body 1.

[0012] Furthermore, the cross section of the above-mentioned several ribs 2 is arc, triangle or polygon.

[0013] The shell has a simple structure. The ribs can be stamped and formed by the shell body material itself, or formed by welding other rib-shaped metal materials to the shell; after the ribs are provided on the shell body, the overall shell Strength, to ensure that under the same strength, the wall thickness of the shell body can be reduced, the material of the shell body is reduced, and the cost is reduced; at the same time, ...

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Abstract

The present invention discloses a compressor housing, which comprises a housing body and a plurality of ribs, wherein the plurality of the ribs are arranged on the surface of the housing body at intervals or in an interval crossing manner along the axial direction or the radial direction of the housing body, and inward recess or outward project on the surface of the inner ring of the housing body so as to form a plurality of strip grooves. With the housing, the manufacturing cost is effectively reduced, and the refrigerant through flow area is increased, the pressure difference between the upper side and the lower side of the motor is reduced, and the compressor efficiency is increased in the case of no change of the compressor stator punching sheet structure.

Description

Technical field [0001] The invention relates to a compressor housing. Background technique [0002] Lightweight compressors and material saving are the development trend of compressors. Therefore, reducing compressor manufacturing costs and improving performance are the two most important measures and elements to enhance product competitiveness. [0003] In the previous compressor shell design, in order to increase the strength of the shell, the thickness of the shell is often considered. However, as the price of bulk materials rises, the proportion of the shell to the cost of sheet metal parts is getting higher and higher. Manufacturing costs increase; secondly, in the previous design, the flow area of ​​the upper and lower sides of the motor in the compressor is determined by the shape of the stator punch. When designing the motor, in order to improve the efficiency, the stator trim is smaller, but this reduces the flow The area, the pressure difference between the upper and low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/00
Inventor 沈建芳黄波耿玮朱利锋
Owner SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD