Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Reexamination Certificate
2005-04-19
2005-04-19
Esquivel, Denise L. (Department: 3744)
Refrigeration
Refrigeration producer
Compressor-condenser-evaporator circuit
C062S114000, C062S115000, C062S502000, C062S511000
Reexamination Certificate
active
06880361
ABSTRACT:
An energy-saving refrigerating device is capable of preventing global warming, allowing a communication pipe diameter to be reduced and the number of types of the communication pipe diameters to be reduced while a COP of over the COP obtained when R22 is used is provided by using R32 with small global warming potential (GWP). The refrigerating device includes a compressor, a first heat exchanger, an expansion device, and a second heat exchanger. The diameters of first and second communication pipes are set to {fraction (2/8)} in. and ⅜ in., respectively, in the refrigerating capacity range of 2.2 to 5.6 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and {fraction (4/8)} in., respectively, in the refrigerating capacity range of 4.5 to 7.1 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and ⅝ in., respectively, in the refrigerating capacity range of 7.1 to 14.0 kW.
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Daikin Industries Ltd.
Esquivel Denise L.
Leung Richard L.
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