| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of generating re-expansion loss to reduce an efficiency of a compressor by reverse flow of coolant at the time of communicating with a suction chamber 12 through a cutout part 2b of a cylinder 2, since a discharge hole 7a is formed as a wasteful space in a compression chamber 11 and compressed coolant remains after a delivery stroke is completed, in a conventional sealed rotary compressor. SOLUTION: The delivery hole 7a, a delivery valve 14, and a surface for arranging it are arranged on a position not overlapped with an inner diameter of a cylinder 2, and thereby, wall thickness of the delivery hole 7a and a valve arranging surface 15 are thinned, a structure for hardly leaving the compressed coolant in the delivery hole 7a is formed. Reverse flow toward the suction chamber 12 is suppressed to the minimum, and thereby it is possible to reduce loss caused by re-expansion.
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