To provide a compressor, a vacuum pump and an oxygen condenser which can offer excellent thermal radiation performance and improve performance of a device.
A housing 115, a casing 135 and heads 83, 85 of a compressor 17 are made of aluminum die casting. The upper surface of the top plate in the housing 115 is subjected to a machined surface processing and brought into intimate contact with the lower surface of the casing 131 which is subjected to a machined surface processing (a second coupling part). The area of the top surface is larger than the cross-sectional area of cylindrical side wall 175 of the housing 115. Leg parts 183, 185 are provided to the tip on the casing 131 side. The tip surfaces of the leg parts 183, 185 are subjected to a machined surface processing, and brought into intimate contact with the end surfaces of lateral lower surface of the casing 131 which are subjected to a machined surface processing of the casing 131 (a first coupling part). The areas of the tip end surfaces of the leg parts 183, 185 are larger than the cross-sectional area of cylindrical side walls 187, 189 of the cylinders 133, 135.
MORI KATSUHISA
SAIKI TAKEHIKO
KATAOKA TADAHIKO
ULVAC KIKO INC
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