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Linear compressor and gas thrust bearing therefor

A technology of thrust bearings and compressors, applied in the direction of linear motion bearings, bearings, shafts and bearings, which can solve problems such as increased operating costs

Inactive Publication Date: 2009-09-16
BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the large gap between the bearing bush and the body also requires that the gas forming the air cushion flow out of the gap, which means that in order to keep the bearing functioning, the gas delivery needs to increase with the gap width, which in turn leads to increase in operating costs

Method used

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  • Linear compressor and gas thrust bearing therefor
  • Linear compressor and gas thrust bearing therefor

Examples

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Embodiment Construction

[0018] exist figure 1 The compressor shown in includes a housing 21 having a hollow cylindrical bearing bush 23 delimiting a working volume 22 . The bearing bushing 23 is surrounded by a cavity 24 which in turn is defined by a generally cylindrical housing portion 25 . The bearing bush 23 and the housing part 25 respectively extend around one end thereof with an annular flange 26 or 27, wherein the flange 26 of the bearing bush 23 engages on one side with a cutout defined by the housing part 25 and on the other. One side engages with the spring piece 28, while the bearing bushing 23 is fixed to the housing part 25, and the spring piece 28 is rigidly connected with the flange 27 of the housing part 25 in any suitable manner, and forms an air connection with the spring piece 28. Tight seal. At the end remote from the flanges 27 , 28 the cavity 24 is sealed by an O-ring 37 clamped between the bearing bushing 23 and the housing part 25 .

[0019] A cover 29 attached to the side...

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PUM

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Abstract

The invention relates to a gas thrust bearing, in particular for a linear compressor. Said bearing comprises a bearing bush (23) that surrounds a cavity (22) and a body (36) that can be displaced in said cavity (22). The bearing bush (23) is penetrated by a plurality of supply bores (35), which can admit compressed gas from the exterior (24) of said bush (23) in order to form a gas cushion that supports the displaceable body (36) in the interior (22). The body (36) and the bearing bush (23) are manufactured from materials with different thermal expansion coefficients.

Description

technical field [0001] The present invention relates to a gas thrust bearing and a linear compressor in which the gas thrust bearing can be used. Background technique [0002] Traditionally, gas thrust bearings consist of a bearing bush surrounding a cavity within which a body is supported to allow movement with small clearances and a plurality of gas supply holes passing through the bearing bush in which compression Gas may be supplied to the gas supply hole on the outer side of the bearing bush. The gas flowing into the cavity via the gas supply hole forms an air cushion between the inner wall of the liner and the movable body, by means of which cushion the body is held in the cavity in a contact-free manner. The body can achieve rotational movement within the bearing bush or can move axially. [0003] Keeping the body supported without it being in contact with the bearing bush requires a continuous supply of compressed gas. However, if a device using a gas thrust beari...

Claims

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Application Information

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IPC IPC(8): F04B35/04F16C29/02F16C32/06
CPCF16C29/025F04B53/008F04B39/0292F16C32/0644F04B39/122F04B39/126F04B35/045
Inventor J-G·舒伯特
Owner BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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