| 摘要 |
PURPOSE:To prevent a carbide from being formed in a discharge valve as well as to secure good sealability over a long period of time, by forming an oil-repellent resin layer on a surface of the discharge valve in a compressive mechanism part, in the case of the compressor that housed an electric motor and the compressive mechanism part in a case. CONSTITUTION:A compressor to be used for a refrigerator or the like has a compressive mechanism part, housing a rotor 6 to be rotated by the electric motor housed in a common vessel via a crankshaft 11 in a cylinder 5. This compressive mechanism part, in turn, has a discharge valve 3 discharging the refrigerant gas compressed at time of completion of a compression stroke, at the lower bearing 1. This discharge valve 3 consists of a lower discharge valve 3a and an upper discharge valve 3b, and its opening limit is regulated by a retainer 2 to be positioned in the outermost part. In this case, an oil- repellent resin layer consisting of a fluororesin polymer or the like such as ethylene polytetrafluoride, etc., is formed on a surface of the lower discharge valve 3a, whereby a carbide is prevented from being formed on the surface.
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