PURPOSE: To make a pressure bulkhead sufficiently thick for maintaining strength and improve the sealing property between the pressure bulkhead and a casing with a simple structure.
CONSTITUTION: A circular protruded pressure contact section 9 having the width narrower than the thickness of a pressure bulkhead 7 is provided on the outer periphery section of the pressure bulkhead 7 partitioning a sealed casing 1 into a high-pressure side chamber 82 and a low-pressure side chamber 84 having a pressure difference, and the protruded pressure contact section 9 is pressed to the inner face of the casing 1. The partition plate 71 of the pressure bulkhead 7 is protruded on the back face of the fixed scroll 3 of a compression element 2, receives a boss section 33 opened with the discharge port 32 of the fixed scroll 3, and partitions the high-pressure side chamber 82 opened with the discharge port 32.
YANAGISAWA MASANORI
HATANO JUNJI
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