| 摘要 |
PROBLEM TO BE SOLVED: To provide a relief valve, sealing high-pressure compressed fluid and having higher reliability than before. SOLUTION: In this relief valve 20, the surface of a tapered recessed part 66 formed of brass 67 is plated with a tin film 68, and a coating material 69 is made to adhere to the tin film 68 to form a sealing part 70, whereby even if a refrigerant (a compressed fluid) becomes high pressure, a tapered projecting part 48 and a tapered recessed part 66 are held in a closely adhering state. That is, as compared with a relief valve using the conventional rubber material, higher-pressure refrigerant can be sealed in the internal space 11 of a compressor 10. In closing the valve, the tapered projecting part 48 and the tapered recessed part 66 are brought into face contact with each other so that the reliability can be heightened more than the conventional relief valve. COPYRIGHT: (C)2005,JPO&NCIPI
|
