A Compact Horizontal Scroll-type Compressor for Room Air Conditioners

Abstract

This paper presents the construction,newly developed design technologies and performance characteristics of a compact horizontal scroll-type compressor for room air conditioners. The authors were able to develop a compact variable speed horizontal scroll-type compressor with a cooling capacity of 1.8 kW,which necessitated the development of new mechanisms,namely,an axial compliance mechanism for compensating liquid compression,an oil pump mechanism for lubrication and a suppression mechanism for oil discharge. Use of the new compressor in room air conditioners made it possible to reduce the external unit of the air conditioner by about 25 %. The new compressor possesses a high efficiency : about 10% higher especially at low speed operation.