| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce a loss of energy of a compression mechanism during the halt of intermediate injection operation which introduces an intermediate pressure coolant of a coolant circuit to a compression chamber on the high-step side through an intermediate injection passage, in a compressor performing two-step compression of a coolant. <P>SOLUTION: The end plate parts 51a, 52a, 55a, 56a on the fixation part of the fixed members 51, 52, 55, 56 are provided on the base end side, and the end plate parts 51a, 52a, 55a, 56a on the movable side of the movable members 51, 52, 55, 56 are provided on the base end side. Eccentric rotary motion of the movable members 51, 52, 55, 56 is made while being pressed against the fixed members 51, 52, 55, 56. Thus, intermediate pressure back pressure chambers 85, 95 which are respectively communicated to the compression chambers 61, 62 on the low-step side are formed on the back side of the end plate parts 51a, 52a, 55a, 56a on the movable side of the compressor 20 which is provided with the compression mechanism 30 performing two-step compression of the coolant. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
