Refrigeration agent compressor and refrigeration cycling device

Abstract

A refrigeration agent compressor can prevent the gap and peeling of a hard protection film arranged on a sliding component and can increase the initial running-in ability of the protection film to an object component in sliding contact with the sliding component. The refrigeration agent compressor is arranged in a refrigeration cycling device for compressing the refrigeration agent and comprises a compressor component having the sliding component (15b), wherein the sliding component (15b) comprises a substrate (24) which is made of metal materials and a protection film (29) which is formed on the surface of the substrate (24) and harder than the substrate (24). The surface roughness of the substrate (24) is set as follows: the maximum outline peak height Rp is less than or equal to 0.5 microns, the arithmetic mean roughness Ra is less than or equal to 0.2 microns, and the concise peak height Rpk is less than the concise vale depth Rvk.

Description

technical field [0001] The present invention relates to a refrigerant compressor and a refrigeration cycle device, and more particularly, to a refrigerant compressor and a refrigeration cycle device having a sliding member having a protective film excellent in wear resistance and adhesion. Background technique [0002] It is known that, in refrigerant compressors, engines, etc., a sliding member that slides against a counterpart member is used, and the sliding member is covered with a hard protective film for improving wear resistance. [0003] In the following Patent Document 1, a sliding member covered with an amorphous hard carbon-based protective film is disclosed. The surface roughness of the amorphous hard carbon-based protective film is set as follows: the ten-point average roughness "Rz" is less than It is equal to 0.7 μm, and the reduced peak height “Rpk” is 0.07-0.14 μm. [0004] Here, the ten-point average roughness Rz is defined as: sampling from the roughness c...

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Problems solved by technology

[0006] Since the surface roughness of the amorphous hard carbon-based protective film of the sliding member described in Patent Document 1 is set so that the ten-point average roughness "Rz" is equal to or less than 0.7 μm, inevitably, the The required precision becomes higher, the fine polishing takes time, and the cost of the product increases

[0007] In addition, in the sliding member described in Patent Document 1, there is no mention of countermeasures for preventing chipping and peeling of the amorphous hard carbon-based protective film.

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