| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiple stage rotary compressor reducing pressure pulsation generated in an intermediate connection part connecting a low stage side cylinder delivery port to a high stage side cylinder intake port, and evenly arranging bolts passing through the low stage side cylinder and the high stage side cylinder in an up-and-down direction to fasten the same. SOLUTION: The multiple stage rotary compressor is provided with a plurality of compression mechanisms provided with: an annular cylinder having a crank shaft rotated by a motor at a center thereof; a roller eccentrically rotating in the cylinder keeping contact with the cylinder on one part by a plurality of crank shaft eccentric parts provided eccentrically on the crank shaft, and a vane abutting on an outside surface of the roller and dividing a space surrounded by an inner diameter surface of the cylinder and the outside surface into two. Pressure of refrigerant is sequentially increased by compression mechanisms connected in series. Rotary angle range in which the compression mechanism by which a high pressure refrigerant arrives performs compression stroke is wider than that of the compression mechanism by which a low pressure refrigerant arrives. COPYRIGHT: (C)2008,JPO&INPIT
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