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Multilevel floating vortex vacuum pumps and usage method thereof

A vacuum pump and scroll technology, which is applied in the field of multi-stage floating scroll vacuum pumps, can solve the problem of high air compression ratio, large axial and radial separation force and energy consumption, and the inability to increase the number of scroll turns and the ultimate vacuum of vacuum pumps and other problems to achieve the effect of improving the ultimate vacuum degree

Inactive Publication Date: 2014-02-12
ADVANCED SCROLL TECH HANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a multi-stage floating scroll vacuum pump and its use method to solve the problem that the existing fixed scroll and orbiting scroll adopt multi-turn scroll elements. The air compression ratio is too high and the internal pressure is too large, resulting in a large axial and radial separation force and high energy consumption. It is impossible to further increase the ultimate vacuum of the vacuum pump by increasing the number of scroll turns.

Method used

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  • Multilevel floating vortex vacuum pumps and usage method thereof
  • Multilevel floating vortex vacuum pumps and usage method thereof
  • Multilevel floating vortex vacuum pumps and usage method thereof

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Embodiment approach

[0030] In the first embodiment of the present invention, please continue to refer to figure 1 , figure 2 and image 3 shown. The exhaust valve assembly 60 includes the above-mentioned reed valve plate 61 and a limiting plate 62 . An air valve chamber 53 is also provided on the first end plate 31 of the fixed scroll 30 , the air valve chamber 53 is connected to the exhaust port 52 , and the air valve chamber 53 runs through the fixed scroll base 20 . One end of the limiting plate 62 is fixedly arranged on the first end plate 31 of the fixed scroll 30 in the air valve chamber 53, and the limiting plate 62 presses down on the reed valve plate 61, and the other end of the limiting plate 62 is bent. Tilt up to limit the opening angle of the reed valve plate 61, so that the opening position of the reed valve plate 61 is limited. At the same time, the reed valve plate 61 fits in the exhaust port 52 located in the middle of the first end plate 31 of the fixed scroll 30 .

[0031...

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Abstract

The invention discloses a multilevel floating vortex vacuum pumps and usage method thereof. The multilevel floating vortex vacuum pumps comprise a plurality of vacuum pumps, each of which comprises a fixed scroll base, a fixed scroll located on the base and an orbiting scroll which do orbiting movement with the fixed scroll, wherein an air inlet is formed in the end plate of a scroll element which is located at the outer ring of the fixed scroll; an air outlet is formed in the end plate of the scroll element which is located at the inner ring of the fixed scroll; the air outlet is provided with a row of vent valve components; the air inlet of every downstream vacuum pump is communicated with the air outlet of the adjacent upstream vacuum pump through a pipe. By adopting the multilevel floating vortex vacuum pump and the usage method, the downstream vacuum pump extracts air from the air outlet of the upstream vacuum pump, thereby reducing the pressure in the volume below the air outlet of the upstream vacuum pump; the dynamic balance between the air inlet and the air outlet is interrupted, the backflow from the air outlet to the air inlet is reduced and the air extracted from the air inlet is increased, thereby reducing the air pressure of the upstream air inlet and increasing the ultimate vacuum degree of the air inlet.

Description

technical field [0001] The present invention relates to the technical field of a vacuum pump, in particular to the technical field of a multi-stage floating scroll vacuum pump and its application method. Background technique [0002] In the mechanical field, scroll devices are used in compressors and expanders. A scroll is an element extending from an end plate with a cylindrical surface with a helical section. Usually one is fixed, called a fixed scroll. The other scroll has a spiral cylinder conjugate to the spiral cylinder of the fixed scroll, and makes a circular translation relative to the fixed scroll, also called orbiting, and is called an orbiting scroll. [0003] The mutually conjugated helical scroll cylinders of these two types of scrolls mesh with each other to form line contact. [0004] At least one sealed compressed air chamber is formed between a pair of adjacent line contacts and the surface of the end plate. When an orbiting scroll orbits relative to the...

Claims

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Application Information

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IPC IPC(8): F04C23/00F04C18/02
Inventor 倪诗茂
Owner ADVANCED SCROLL TECH HANGZHOU
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