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scroll compressor

A technology of scroll compressors and scroll disks, applied in the direction of rotary piston machinery, rotary piston pumps, mechanical equipment, etc., can solve the problem of reduced bearing lubrication quality, difficulty in selecting the angle position of the lubrication hole, and failure to always comply with the lubrication hole To prevent lubrication degradation and improve compressor efficiency

Inactive Publication Date: 2018-12-28
DANFOSS COMML COMPRESSORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Therefore, the proper angular position of the lubricating hole relative to said inner wall portion of the lubricating channel cannot always be respected, which leads to a reduction in the bearing lubrication quality
[0014] Further, since the angular position of the radial load applied between the drive shaft and the bearing depends on the drive shaft speed, the use of a variable speed motor as the drive unit may make it difficult to select the most suitable angular position for the lubrication hole in addition to operating conditions

Method used

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Examples

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Embodiment Construction

[0096] figure 1 The scroll compressor 1 is shown occupying a vertical position.

[0097] The scroll compressor 1 includes a hermetic container 2 and a compression unit 3 arranged in the hermetic container 2 and configured to compress refrigerant.

[0098] The compression unit 3 comprises a first and a second fixed scroll 4 , 5 delimiting an inner volume 6 . Specifically, the first and second fixed scrolls 4 , 5 are fixed relative to the closed container 2 . For example, the first fixed scroll 4 may be fastened to the second fixed scroll 5 . The compression unit 3 also comprises an orbiting scroll arrangement 7 arranged in the inner volume 6 .

[0099] The first fixed scroll 4 includes a base plate 8 and a spiral wrap 9 protruding from the base plate 8 toward the second fixed scroll 5 , and the second fixed scroll 5 includes a base plate 11 and a spiral wrap 9 extending from the base plate 11 toward The first fixed scroll 4 protrudes from a spirally wound member 12 .

[01...

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Abstract

The scroll compressor (1) includes an orbiting scroll arrangement (7), and a drive shaft (18) configured to drive the orbiting scroll arrangement (7) in an orbital movement, the drive shaft (18) including a lubrication channel (32) and a first lubrication hole (35) fluidly connected to the lubrication channel (32) and emerging in an outer wall of the drive shaft (18). The scroll compressor (1) further includes a first and a second bearings (38, 39) axially offset along a rotation axis of the drive shaft (18) and each configured to engage the drive shaft (18). The first and second bearings (38, 39) and the drive shaft (18) partially define a first annular gap (44) in which emerges the first lubrication hole (35). The first bearing (38) and the drive shaft (18) define a first oil recess fluidly connected to the first annular gap (44), and the second bearing (39) and the drive shaft (18) define a second oil recess fluidly connected to the first annular gap (44).

Description

technical field [0001] The present invention relates to a scroll compressor, and in particular to a scroll refrigeration compressor. Background technique [0002] As known, scroll compressors may include: [0003] -sealed container, [0004] - a compression unit configured for compressing refrigerant and comprising a fixed scroll and an orbiting scroll, [0005] - a drive shaft configured to drive the orbiting scroll in orbital motion, the drive shaft comprising in particular: [0006] - a lubrication passage configured to be supplied with oil from an oil sump by an oil pump driven by the drive shaft, the lubrication passage extending over at least part of the length of the drive shaft, and [0007] - a plurality of lubrication holes fluidly connected with the lubrication channel and present in the outer wall of the drive shaft, the lubrication holes being axially offset along the axis of rotation of the drive shaft, [0008] - a drive unit coupled to the drive shaft and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01C21/02F04C29/02F04C18/02
Inventor 伊夫·罗森帕特里斯·博内福伊英格丽德·克劳丁
Owner DANFOSS COMML COMPRESSORS
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