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Welding structure of rotary type compressor pump body and rotary type compressor pump body provided therewith

A technology of rotary compressor and welding structure, applied in the direction of rotary piston/swing piston pump, parts of pumping device for elastic fluid, machine/engine, etc. Increase costs and other issues to achieve the effect of reducing fit, improving welding deformation, and improving performance

Inactive Publication Date: 2011-11-23
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] like figure 1 and figure 2 As shown, the pump body assembly in the prior art rotary compressor is fixed with the casing 2 by welding the cylinder 1 or welding the flange 4 (3 and 5 are welding spots), and the shape of the cylinder 1 is formed by an axe (such as image 3 shown) to the hub-and-spoke type (such as Figure 4 As shown), the main purpose is to improve the welding deformation of the inner circle of the cylinder and the cylinder slide groove. Although the spoke type has greatly improved the cylinder deformation, the deformation of the slide groove is relatively large, so the cylinder welding is changed to flange welding. , although the flange welding eliminates the deformation of the cylinder, but greatly increases the cost

Method used

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  • Welding structure of rotary type compressor pump body and rotary type compressor pump body provided therewith
  • Welding structure of rotary type compressor pump body and rotary type compressor pump body provided therewith
  • Welding structure of rotary type compressor pump body and rotary type compressor pump body provided therewith

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Embodiment Construction

[0023] see Figure 5 The welded structure of the pump body of the rotary compressor of the present invention includes a cylinder 10 and a casing 20. The outer circle 14 of the cylinder 10 is provided with a welded structure, and the pump body is fixed to the casing 20 by welding. refer to Image 6 As shown, a protruding welding seat 13 is provided on the outer circle 14 of the cylinder 10, recesses 12 are provided on both sides of the welding seat 13, and a welding hole 11 is provided on the welding seat 13. This structure changes the transfer path of welding heat and the load-bearing form of the fixing part, reduce the contact area between the cylinder 10 and the housing 20, weaken the deformation of the housing 20 after welding to squeeze the cylinder 10, and improve the phenomenon that the cylinder 10 is easily deformed.

[0024] The welding hole 11 is used for welding the cylinder 10 and the housing 20, the diameter A of the welding hole 11 is 2-8 mm, and the distance D b...

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Abstract

The invention discloses a welding structure of a rotary type compressor pump body. The welding structure is utilized for cylinder welding or flange welding. The external circumference of a cylinder or a flange is provided with at least two welding apertures, and two sides of each one of the at least two welding apertures are provided with concave portions. The concave portions change a pathway of welding heat transmission and a bearing form of a fixed part, enable a cylinder or a flange to cooperate with a housing body by the minimum area, and reduce extrusion effects on a cylinder body, wherein the extrusion effects are caused by housing body deformation produced by welding, thus welded fixed part stiffness is increased; welding deformation is improved; and compressor performances are improved.

Description

【Technical field】 [0001] The invention relates to a welding structure, in particular to a welding structure of a pump body of a rotary compressor. 【Background technique】 [0002] like figure 1 and figure 2 As shown, the pump body assembly in the prior art rotary compressor is fixed with the casing 2 by welding the cylinder 1 or welding the flange 4 (3 and 5 are welding spots), and the shape of the cylinder 1 is formed by an axe (such as image 3 shown) to the hub-and-spoke type (such as Figure 4 As shown), the main purpose is to improve the welding deformation of the inner circle of the cylinder and the cylinder slide groove. Although the spoke type has greatly improved the cylinder deformation, the deformation of the slide groove is relatively large, so the cylinder welding is changed to flange welding. , although the flange welding eliminates the deformation of the cylinder, it greatly increases the cost. Therefore, under normal circumstances, the flange welding meth...

Claims

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Application Information

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IPC IPC(8): F04C29/00
Inventor 任丽萍申文龙黄伟才孔令超
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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