| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the increase in a resistance force by the surface tension of an oil film stuck to a delivery valve and the increase in the power loss of a gas compressor, even if the gas compressor is operated with a high speed. SOLUTION: The valve seat surface 1 provided on a cylinder is formed in a muscular unevenness along the flow direction of a refrigerant gas and a leaf shape valve element 2 is contacted to this valve seat surface 1. Even if a lubricant is collected in the clearance between the contacted valve seat surface 1 and the valve element 2, its surface tension is weak due to the unevenness of the valve seat surface 1 and a delivery valve is opened easily by the pressure difference of the refrigerant between a cylinder chamber and delivery port and the gas compressor is operated by a few power at the high speed operation time.
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