Patent ID: 6880361
Filing Date: 2005-04-19
Classification: C09K,F25B,Y02P

Abstract:
1. A refrigerating device, comprising: a pipe for delivering refrigerant discharged from a compressor to a first heat exchanger; an expanding device for expanding the refrigerant condensed in the first heat exchanger; a first communication pipe for delivering the refrigerant expanding in the expanding device to a second heat exchanger; and a second communication pipe for returning the refrigerant vaporized in the second heat exchanger to the compressor, wherein a single refrigerant R32 is used as the refrigerant, and diameters of the first communication pipe and the second communication pipe are set to {fraction (2/8)} inch and ⅜inch, respectively, in a refrigerating capacity over an entire range of 2.2 to 3.9 kW.