SCROLL COMPRESSOR AND REFRIGERATING DEVICE

摘要

<P>PROBLEM TO BE SOLVED: To enlarge an operation range of a compressor by allowing reduction in pressing force for pressing one scroll to the other scroll in the scroll compressor and by reducing generation of abrasion and galling at tips of the scrolls. Ž<P>SOLUTION: A scroll back pressure chamber in the scroll compressor is composed of a space 111 filled with intake gas (or intermediate-pressure gas) and a space 112 filled with discharge pressure. One scroll is pressed to the other scroll by the total of intake gas pressure (or intermediate pressure) and discharge gas pressure. An injection hole 205 for injecting gas coolant or liquid coolant to a compression chamber 81 of a scroll compression mechanism part 2 is provided for a fixed scroll 6. Gas injection or liquid injection is chosen and executed according to the operation pressure ratio. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž