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Spiral-type extruder

An extruder, screw-like technology, applied in the field of extruders, able to solve the problem that it is no longer sufficient to ensure tightness, no longer allowable, etc.

Inactive Publication Date: 2012-07-25
斯宾勒工程公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Such machines that are in principle more than 20 years old and have a true seal are no longer able to meet today's requirements, since on the one hand a residual gap with a permanent connection between the pressure chamber and the suction chamber is no longer permissible in principle, and on the other hand On the one hand, the small residual play, which remains constant only during half a revolution of the crank, is no longer sufficient to ensure the necessary tightness

Method used

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  • Spiral-type extruder
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Embodiment Construction

[0014] An explanation of the working of a compressor, which is not the subject of the present invention, has already been given in DE 2603462 A1 mentioned at the beginning of the article. The following only briefly describes the mechanical structure and process flow necessary for understanding.

[0015] The rotor of the machine is denoted as a whole by 1 in the figures, which has an extruded body formed by helical flanged plates 3 protruding vertically from the disk 2 axially on both sides. according to figure 1 , the spiral body, ie the edge plate 3, is formed by a plurality of interconnected circular arc pieces and has a wrap angle of approximately 360°. Furthermore, the outlet end of the helix is ​​provided with a slight so-called internal seal, as disclosed in DE 2603462 A1 mentioned at the beginning of the article. This makes sense when the high pressure in the working chamber caused by the internal seal requires a problem-free seal. A plurality of perforations are arr...

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Abstract

In a positive-displacement machine for compressible media, having a spiral-shaped delivery chamber (11) arranged in a housing (7b) between cylinder walls (14, 15), a spiral-shaped positive-displacement body is composed of a disk (2) with spiral-shaped strips (3). Said strips (3) are held eccentrically with respect to the housing, in such a way that, during operation, each point of the strip performs a movement which is limited by the peripheral walls of the delivery chamber. The contour (20) of the disk is formed, in the overlapped region of the spiral at the point provided for the mutual sealing of the traversed chambers (11, 16), in the shape of the movement path. The housing edge (19) is formed, as a transition between the raised first part (17) and lowered second part (18) of the outer cylinder wall (14) of the housing, as a bulbous thickened portion. The radial extent 'D' of said thickened portion is at least as great as the degree of eccentricity ('e'). In periods of machine operation, in which a higher pressure prevails in the outer, sickle-shaped working chamber (11) than in the suction chamber (16), said circular-arc-shaped projection (19) together with the contour of thedisk forms a sealing line (21) which extends over the height of the projection.

Description

technical field [0001] The present invention relates to an extruder for compressing media. Background technique [0002] Extruders according to a helical structure are known, for example, in DE 2603462 A1. A compressor constructed in accordance with this principle is characterized by an almost fluctuation-free delivery of a gaseous working medium, for example consisting of air or an air-fuel-mixture, and can thus also advantageously be used to feed an internal combustion engine. During operation of such a compressor, between the helically formed extrusion body and the two circumferential walls along the extrusion chamber a plurality of working chambers, which are generally sickle-shaped, move from the inlet through the extrusion chamber to the outlet , wherein its volume continuously decreases and the pressure of the working medium increases accordingly. [0003] The machine described at the outset of the article is disclosed in DE 3407939 C1, in which the spiral bodies en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01C1/02F01C17/06F01C19/02F04C18/02F04C27/00
CPCF04C27/001F04C18/0269F04C18/0223F01C17/06
Inventor 弗里茨·斯宾勒
Owner 斯宾勒工程公司