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Sliding component of compressor, sliding component base, scroll component, and compressor

A technology of sliding parts and compressors, which is applied to machines/engines, parts of pumping devices for elastic fluids, pump parts of rotary piston type/oscillating piston type, etc. , decline and other issues

Active Publication Date: 2009-03-25
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, if the hardness of the movable scroll and the fixed scroll is very low, the ductility of the movable scroll and the

Method used

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  • Sliding component of compressor, sliding component base, scroll component, and compressor
  • Sliding component of compressor, sliding component base, scroll component, and compressor
  • Sliding component of compressor, sliding component base, scroll component, and compressor

Examples

Experimental program
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Effect test

no. 1 approach

[0188] Hereinafter, a high-low pressure dome-type scroll compressor will be described as an example of a compressor employing the sliding member according to the first embodiment. In addition, the high-low pressure dome-type scroll compressor described in the first embodiment is designed to cope with carbon dioxide refrigerant (CO 2 ) or high-pressure refrigerants such as R410A.

[0189] The high-low pressure dome-type scroll compressor 1 described in the first embodiment comprises a refrigerant circuit composed of an evaporator, a condenser, an expansion mechanism, etc., and performs the function of compressing the gas refrigerant in the refrigerant circuit. ,Such as figure 1 As shown, the high and low pressure dome type scroll compressor 1 is mainly composed of the following parts: a cylindrical sealed dome type housing 10, a scroll compression mechanism 15, an Oldham slip ring 39, a driving motor 16, a lower part Main bearing 60 , suction pipe 19 and discharge pipe 20 . ...

no. 2 approach

[0369] Hereinafter, a high-low pressure dome-type scroll compressor will be described as an example of a compressor using the sliding member according to the second embodiment. In addition, the high-low pressure dome-type scroll compressor described in the second embodiment is replaced by the outer drive type movable scroll 26 of the high-low pressure dome-type scroll compressor 1 described in the first embodiment. It is obtained by forming an internally driven movable scroll. Therefore, only the movable scroll will be described below.

[0370] [Structure of the movable scroll]

[0371] Such as Figure 33 As shown, the movable scroll 96 is mainly composed of the following parts: a mirror plate 96a; a spiral (involute) scroll tooth 96b extending upward from a mirror surface 96P of the mirror plate 96a; a bearing portion 96c, which extending downward from the lower surface of the mirror plate 96a; and groove portions 96d formed at both ends of the mirror plate 96a.

[0372] ...

no. 3 approach

[0386] Hereinafter, a high-low pressure dome-type scroll compressor will be described as an example of a compressor using the sliding member according to the third embodiment. In addition, the difference between the high and low pressure dome scroll compressor 1 described in the third embodiment and the high and low pressure dome scroll compressor 1 described in the first embodiment is only the fixed scroll and the movable scroll The spiral tooth shape of the turntable. Therefore, only the fixed scroll and the movable scroll will be described below.

[0387] The base 626 of the movable scroll 526 described in the third embodiment uses, for example, Figure 35 The metal mold 180 shown is formed by semi-molten die casting.

[0388] Specifically, as follows.

[0389] Such as Figure 35 As shown, a metal mold 180 is used to form the base body 626 of the orbiting scroll 526 by semi-molten die casting, and the metal mold 180 is composed of a first mold portion 181 and a second m...

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Abstract

This invention provides a sliding component of a compressor that has a high tensile strength, can develop satisfactory durability during operation, can realize ''familiarity'' in the earliest possible stage, and does not cause seizing during abnormal operation. Sliding components of compressors (17, 23, 24, 26, 39, 60, 96, 310b, 524, 526, 644, 646, 724, 726, 734, 736, 817, 821, 823, 824, 825, 826, 827, 921, and 924)comprise 2.0 to 2.7% by weight of carbon and 1.0 to 3.0% by weight of silicon with the balance consisting of iron containing unavoidable impurities. In this case, graphite is smaller than flake graphite in flake graphite cast iron, and the hardness of at least a part thereof is higher than HRB90 and lower than HRB100.

Description

technical field [0001] The invention relates to a compressor, sliding parts (scroll parts, cylinder blocks, pistons, rollers, etc.) Background technique [0002] A method of manufacturing a compressor sliding member has been proposed in the past: “manufacturing a compressor sliding member base by semi-molten die-casting” (for example, refer to Patent Document 1). Moreover, according to this manufacturing method, compared with the case of using the sand casting method, the molded article of high tensile strength and high hardness can be obtained. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2005-36693 [0004] Patent Document 2: Japanese Patent Application Publication No. 4-134686 [0005] However, in a scroll compressor, for example, the front end of the scroll crest is generally set to have an initial clearance in consideration of deformation during operation. This is because, during operation, when in contact with a part of the scroll tooth top, there will ...

Claims

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Application Information

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IPC IPC(8): F04C29/00C22C37/10F04B39/00F04C18/02
CPCF05C2251/10F05C2251/14F05C2201/0439F05C2203/06F04C23/008F04C2230/21F05C2203/0882F04C18/0246F04C29/00F04C18/02F04B39/00C22C37/10
Inventor 新井美绘山路洋行岸川光彦山本哲梶原干央广内隆村上泰弘增田正典古庄和宏
Owner DAIKIN IND LTD
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