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Floating type axial sealing structure

A technology of axial sealing and sealing structure, which is applied in the field of compressors, can solve the problems of unable to meet the long-term stable gas circulation, reduce the sealing effect of sealing strips, and increase radial leakage, etc., so as to increase the gas pressure, improve the sealing effect, Effect of Reducing Axial Backlash

Pending Publication Date: 2018-12-21
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only making the side of the sealing strip into a zigzag shape obviously cannot meet the long-term stable gas flow; as time goes by, the sealing effect of the sealing strip will decrease, and the radial leakage will increase

Method used

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  • Floating type axial sealing structure
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Embodiment Construction

[0025] Such as figure 1 As shown, the oil-free scroll compressor includes a fixed scroll 1 and a movable scroll 2, and the fixed scroll 1 and the movable scroll 2 are installed opposite to each other at 180°. Sealing grooves 4 are provided on the first scroll teeth 31 of the fixed scroll 1 and the second scroll teeth 32 of the movable scroll 2 . Because the fixed scroll 1 and the first scroll 31 and the second scroll 32 of the movable scroll 2 have the same structure, they are arranged oppositely. In order to save space, the second scroll on the movable scroll 2 is used below 32 as an example. Wherein, the interface surface between the fixed scroll 1 and the second scroll 32 or the interface surface between the movable scroll 2 and the first scroll 31 is used as the end surface of the scroll, and the first scroll 31 or the second scroll 31 is used as the end surface of the scroll. The groove surface of the second spiral tooth 32 (that is, the surface provided with the sealin...

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Abstract

The invention belongs to the technical field of compressors, and particularly relates to a floating type axial sealing structure. The technical scheme is as follows the floating type axial sealing structure comprises a static scroll plate and a dynamic scroll plate are correspondingly provided with a vortex tooth, a sealing groove is formed in the tooth surface of the vortex tooth, and a sealing structure is arranged in the groove; the shape of the sealing structure corresponds to the shape of the vortex tooth, the sealing structure is composed of a wear-resisting sheet, a sealing strip and asealing lining from outside to inside in sequence through glue; the sealing structure is divided into three sections from the outer ring to the inside in sequence along the rotation direction of the vortex tooth by the partition plates which are arranged in the sealing groove: a low -pressure sealing section, a medium-pressure sealing section and a high-pressure sealing section; in terms of length, the low-pressure sealing section is larger than the medium-pressure sealing section, the medium-pressure sealing section is larger than the high-pressure sealing section; the partition plates playsan air-sealing role on the sealing groove. The vortex tooth and the sealing structure are designed according to different pressures of the vortex tooth, the gas flow in the tooth grooves is reasonablyplanned, the sealing effect of the sealing structure is improved, and radial leakage is effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of compressors, and in particular relates to a floating axial sealing structure. Background technique [0002] As a new type, energy-saving, high-efficiency, low-noise, and material-saving volumetric fluid machinery, scroll compressor has many advantages such as high efficiency, low energy consumption, low noise, simple and compact structure, etc. It has both volumetric and rotary compression The advantages of the compressor are widely used in the fields of refrigeration, air conditioning and gas compression; compared with other types of compressors, it has irreplaceable advantages and is known as a new type of high-efficiency volumetric compressor. [0003] Many scroll compressors now contain lubricating oil, which can play a role in sealing, lubricating and cooling during operation. However, for oil-free scroll compressors, the airtightness of the gas between the scrolls has a great influence on the perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C27/00F04C18/02
CPCF04C18/0215F04C18/0269F04C27/005
Inventor 彭斌方圆力
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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