Refrigerant compressor using refrigerant HFC134a or HFC152a
    9.
    发明公开
    Refrigerant compressor using refrigerant HFC134a or HFC152a 失效
    无卤素HFC134a和HFC152a。

    公开(公告)号:EP0523839A2

    公开(公告)日:1993-01-20

    申请号:EP92305142.9

    申请日:1992-06-04

    IPC分类号: F04B39/00 F01C21/10

    摘要: A hermetic type refrigerant compressor operates using a refrigerant and a refrigerator oil in which the refrigerant is soluble. The refrigerant compressor includes slidable members adapted to slidably move and a compressing mechanism for compressing the refrigerant with the aid of the slidable members in a hermetic casing. The refrigerant, the refrigerator oil and the slidable members are selected and constructed in the following manner. The refrigerant is a 1,1,1,2-tetrafluoroethane or a 1,1-difluoroethane, the refrigerator oil is at least one kind of refrigerator oil selected from a polyalkylene glycol based oil and a polyester based oil, and at least one of the slidable members has a slidable surface which is prepared such that a surface hardened layer (12) having a Vickers hardness of 400 or more and a thickness of 2 microns or more is formed on a substrate (11) of ferrous metallic material, and subsequently, an iron oxide layer (13) composed of Fe₃O₄ as a main component and having a thickness of 0.01 micron or more is formed on the surface hardened layer. Each slidable member has surfaces each of which exhibits especially improved abrasion resistance.

    摘要翻译: 封闭式制冷剂压缩机使用制冷剂和制冷剂可溶的冷冻机油进行动作。 制冷剂压缩机包括适于滑动移动的可滑动构件和用于借助于可滑动构件在密封壳体中压缩制冷剂的压缩机构。 制冷剂,制冷机油和滑动构件以如下方式选择和构造。 制冷剂是1,1,1,2-四氟乙烷或1,1-二氟乙烷,冷冻机油是选自聚亚烷基二醇类油和聚酯类油中的至少一种冷冻机油,以及至少一种 可滑动构件具有可滑动表面,其被制备成使得在铁基金属材料的基底上形成维氏硬度为400以上且厚度为2微米以上的表面硬化层,随后形成氧化铁层 的Fe3O4作为主要成分,并且在表面硬化层上形成0.01微米以上的厚度。 每个可滑动构件具有各自表现出特别改善的耐磨性的表面。