SCROLL TYPE FLUID MACHINE

摘要

A scroll type fluid machine which has a bypass hole construction for capacity control. The scroll type fluid machine comprises a first scroll (1) having a first spiral blade (12), and a second scroll (2) having a second spiral blade (22). A first fluid working chamber (A) is defined between an inner surface of the first spiral blade (12) and an outer surface of the second spiral blade (22), and a second fluid working chamber (B) is defined between an outer surface of the first spiral blade and an inner surface of the second spiral blade. A spiral end (le) of the first spiral blade is extended so as to have the first fluid working chamber (A) and the second fluid working chamber (B) open and close with respect to a single low pressure port (3). A common bypass hole (4) is provided which allows the first and second fluid working chambers (A, B) to commonly communicate with the low pressure port (3).