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Swirl fluid machinery

A fluid machinery, scroll technology, applied in the direction of rotary piston machinery, mechanical equipment, rotary piston pump, etc., can solve the problems of reduced compression efficiency, increased clearance, etc., to reduce power loss, improve strength, and reduce costs Effect

Active Publication Date: 2005-03-30
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the gap between the lap portion of the fixed scroll body and the lap portion of the orbiting scroll body on the peripheral surface of the lap portion except for the protrusion is larger than that of the lap portion without the protrusion, so The problem of reduced compression efficiency

Method used

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  • Swirl fluid machinery
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Examples

Experimental program
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Embodiment Construction

[0105] Hereinafter, a scroll type fluid machine according to an embodiment of the present invention will be described in detail by taking a scroll type air compressor as an example with reference to the drawings.

[0106] here, Figure 1 to Figure 13 The first embodiment is shown, and in this embodiment, a structure in which protrusions are provided on the orbiting scroll will be described as an example.

[0107] figure 1 Represents a longitudinal sectional view of a scroll air compressor, in which figure 1 Among them, 1 is a fixed scroll body of a scroll air compressor; the fixed scroll body 1 is installed at the end of a cylindrical housing (not shown). In addition, the fixed scroll body 1 includes: a disc-shaped end plate 2 whose center is aligned with the axis 01-01 of the drive shaft 8 described later; The overlapping portion 3 ; the cylindrical portion 4 surrounding the overlapping portion 3 protruding in the axial direction from the radially outer side of the end pan...

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PUM

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Abstract

The purpose of this invention is to prevent a motive power loss and noise in operation, while enhancing sealability of a compression space, by properly setting its angle, while enhancing strength of projections arranged in a lap part. The inner diameter side projection 13 and the outer diameter side projection 14 are respectively arranged on an inner peripheral surface 12A and an outer peripheral surface 12B of the lap part 12 of a revolving scroll 10, and these cross sections are formed in a substantially triangular shape. Thus, the projections 13 and 14 can enhance the strength by preventing stress concentration by concave circular arc surfaces 13B and 14B, and top parts 13A and 14A can easily become familiar by contacting with the lap part 3. An angle [alpha] formed by the adjacent projections 13 and 14 is set in a predetermined range. Thus, the sealability of the compression space 15 is enhanced, and workability of the lap part 12 and the projections 13 and 14 can be enhanced.

Description

technical field [0001] The present invention relates to a scroll type fluid machine suitably applied to, for example, an air compressor, a vacuum pump, and the like. Background technique [0002] The structure of a general scroll type fluid machine includes: a fixed scroll body; a revolving scroll body arranged opposite to the fixed scroll body. In addition, the fixed scroll body and the orbiting scroll body respectively have: a disk-shaped end plate, which is rolled into a scroll shape from the radially inner side to the radially outer side of the end plate, and the lap which is vertically arranged on the end plate along the axial direction. Connection department. In this way, the fixed scroll and the orbiting scroll overlap each other to form a plurality of compression chambers. [0003] Moreover, the scroll type fluid machine rotates the revolving scroll at an equal radius of rotation relative to the fixed scroll through the drive shaft, whereby gas can be sucked in fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C25/02F04C18/02F04C29/00
Inventor 末藤和孝坂本晋福井宏治三桥博牧岛正夫小林义雄筑间宽水越绫
Owner HITACHI LTD
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