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Swash plate of swash plate compressor and swash plate compressor

By using fluororesin and graphite resin films with high tensile shear bonding strength on the sliding surface of the swash plate compressor, combined with PAI resin and double-sided grinding processing, an oil concave structure is formed, which solves the problems of sintering and cavitation, and achieves Low friction, wear resistance and improved economy.

Active Publication Date: 2013-05-29
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, for the slanting plate compressor that uses carbon dioxide as the refrigerant that has been developed in recent years, since the pressure inside the compressor reaches 8 to 10 MPa, the sliding pressure between the swash plate and the sliding foot is also increased to this extent. The problem that the sliding part of the plate is more likely to be sintered to this extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 8

[0076] After the SAPH440C steel plate was formed into a disc shape by pressing, it was rough-machined with a thickness of 6.5mm×φ90mm with a turntable. Then, both sides were ground with a double-side grinder (grindstone: #80) so that flatness: 5 μm or less, parallelism: 5 μm or less, and thickness 6.36 mm. Next, shot blasting (roughness Rz 5.0 μm) was performed on the polished surface of the disc substrate to increase the surface roughness. Furthermore, the compounded resin coating in Table 1 as the solid content was sprayed onto both sides of the disc base material through shot blasting so that it would be 30 μm after firing, and after firing at 240° C. Both surfaces were ground with a machine (polishing stone: #400 for resin), and final finishing (flatness: 15 μm or less, parallelism: 15 μm or less, thickness 6.40 mm, surface roughness 0.6 to 0.7 μmRa) was obtained to obtain a test piece. Furthermore, for Examples 4 and 5, predetermined circular grooves were provided concen...

Embodiment 9～12

[0082] The substrate was processed in the same manner as in Example 1. Next, with respect to this base material, the resin paint compounded in the same way as in Example 3 in Table 1 was sprayed on both sides of each so as to have a thickness of 30 μm after firing. After firing, it was ground with a surface grinder, and finally finished (flatness: 15 μm or less, parallelism: 15 μm or less, thickness 6.40 mm), and a test piece was obtained. At this time, four types of grindstones (#2000, #600, #230, and #120 for resin) were used to prepare test pieces with different surface roughness.

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PUM

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Abstract

Provided are a swash plate of a swash plate compressor which has excellent seize resistance under extreme pressure conditions due to one-side hitting of a shoe in sliding contact with the swash plate or in such a condition that lubricant oil runs out and is capable of preventing erosion of a coating due to cavitation at high surface pressure and high speed under existence of the lubricant oil, and a swash plate compressor comprising the swash plate. The swash plate is a swash plate 3 of a swash plate compressor wherein shoes 4 slide with respect to the swash plate 3 orthogonally and obliquely mounted so as to be fixed to a rotating shaft 2 directly or indirectly via a connection member in a housing 1 where a refrigerant exists, rotational motion of the swash plate 3 is converted to reciprocating motion of a piston 5 via the shoes 4, and the refrigerant is compressed and expanded. Resin coatings are formed on sliding surfaces on which the shoes 4 slide. Each resin coating includes 25 to 70 parts by weight of fluororesin and 1 to 20 parts by weight of graphite with respect to 100 parts by weight of matrix resin, and has the tensile shear adhesive strength of at least 25 MPa.

Description

technical field [0001] The present invention relates to a swash plate and a swash plate compressor used for a swash plate compressor of an air conditioner or the like. Background technique [0002] In the case of a swash plate compressor, in the case where the refrigerant exists, a swash plate installed directly at a right angle and obliquely through a connecting member in a manner directly fixed to a rotating shaft slides a sliding foot through which the swash plate The rotary motion of the piston is transformed into the reciprocating motion of the piston, which compresses and expands the refrigerant. Among such swash plate compressors, there are double swash plate type that compresses and expands refrigerant on both sides using a double-headed piston, and single swash plate type that uses a single-headed piston to compress and expand refrigerant on only one side. . In addition, the slider includes a slider that slides only on one side of the swash plate and a slider that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B27/08C10M103/02C10M107/38C10M125/02C10M149/16C23C26/00C10N30/00C10N30/06C10N40/02C10N40/30
CPCF05C2253/12F04B27/1054F04B27/086C10M2213/0623C10M169/04C10N2240/30F04B27/0886C10M2217/044F05C2203/0808F04B27/0895C10N2230/06C10M2213/062C10M2217/0443C10N2250/08C10N2220/306C10M2201/041F05C2253/20F05C2225/04C23C26/00C10N2020/106C10N2030/06C10N2040/30C10N2050/08
Owner NTN CORP
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