SCROLL-TYPE REFRIGERATOR COMPRESSOR

摘要

This compressor comprises first and second volutes (8, 11) describing an orbital relative movement and each comprising a plate (9, 12) from which a spiral (10, 13) extends, the two spirals being engaged one inside the other and defining pairs of compression chambers (14) of variable volume. The compressor has a housing (25) formed in that surface of the plate (9) of the first volute which is turned towards the spirals (10, 13), which housing (25) opens into one of the compression chambers (14), refrigerant delivery means (33) leading into the housing (25), and a nonreturn device (26) being mounted in the housing (25), the nonreturn device preventing communication between the delivery means and the compression chamber into which the housing (25) opens in a first or closed position, and allowing communication between the delivery means and said compression chamber in a second or open position.