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Refrigerant compressor

A technology of compressors and refrigerants, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as difficulty in ensuring wear resistance or burn-in resistance reliability, and achieve the effect of ensuring reliability

Inactive Publication Date: 2012-06-27
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, when resin bearing materials or lined resin bearing materials are used for all main bearings and crank bearings, there is a problem that it is difficult to ensure reliability such as wear resistance and seizure resistance under boundary lubrication conditions.

Method used

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  • Refrigerant compressor
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Examples

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Embodiment Construction

[0038] Hereinafter, a refrigerant compressor according to an embodiment of the present invention will be described with reference to the drawings.

[0039] The refrigerant compressor 10 of this embodiment, such as figure 1 and figure 2 As shown, the airtight container 1 is equipped with a compressor part 2 that compresses a chlorine-free refrigerant; a rotating shaft 7 that drives the compressor part 2; bearings 4c, 6c1, 6c2, 6d that pivotally support the rotating shaft 7; The upper frame 6A supporting the bearings 6c1, 6c2; the lower frame 6B supporting the bearing 6d; and the motor 9 for rotating the rotating shaft 7 are main components. As the chlorine-free refrigerant, any one of R410A, carbon dioxide, and propane is used. At the bottom of the airtight container 1, lubricating oil remains.

[0040] In this refrigerant compressor 10 , the compressor unit 2 is disposed above and the motor 9 is disposed below, and the compressor unit 2 and the motor 9 are connected via a...

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PUM

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Abstract

A refrigerant compressor (10) is provided, which includes compressor part (2) compressing refrigerant with on chlorine in sealed container (1), rotation axis (7) driving the compressor part (2), bearing supporting the rotation axis (7), and motor (9) rotating the rotation axis (7). The rotation axis (7) includes main axis part (7a) fixed on motor rotor (9b), crank part (7b) combined on the compressor part (2). The bearing is provided with main bearing (6c) supporting the main axis part (7a), and crank bearing (4c) supporting the crank part (7b). The main bearing (6c) consists of the crank side main bearing (6c1) and the motor side main bearing (6c2) near to the crank side main bearing. The crank bearing (4c) and the crank side main bearing (6c1) are composed by carbon axis containing graphite whose gas hole of carbon substrate is infiltrated by metal. The motor side main bearing (6c2) is composed by intervolve set formed by curly plate.

Description

technical field [0001] The invention relates to a refrigerant compressor, in particular to a refrigerant compressor suitable for air conditioners, freezers and water heaters. Background technique [0002] As a conventional refrigerant compressor, there is a refrigerant compressor disclosed in Japanese Patent Application Laid-Open No. 2002-147354. The refrigerant compressor includes a compressor unit for compressing chlorine-free refrigerant, a rotary shaft for driving the compressor unit, a bearing for supporting the rotary shaft, and a rotary motion for the rotary shaft in a closed container. of the motor. The rotary shaft includes a main shaft portion fixed to the motor rotor, and a crank portion engaged with the compressor portion. The bearing of the rotary shaft includes a main bearing that pivotally supports the main shaft portion of the motor on the compressor portion side, and a crank bearing that pivotally supports the crank portion. As the main bearing and the cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B39/00F04C18/02F04C29/00F16C17/02F16C33/12
CPCF16C2360/42
Inventor 高安博马场升大岛健一山中敏昭
Owner HITACHI LTD