Refrigeration appliance with a plurality of storage compartments

Abstract

Refrigeration appliance comprising at least two storage compartments ( 10, 11 ) and a refrigerating circuit comprising a compressor ( 14 ), a condenser ( 15 ), valve means ( 18, 19 ) and two evaporators ( 12, 13 ). The compressor ( 14 ) is a variable-capacity compressor, and said valve means are constituted by a unidirectional valve ( 18 ) and a flow-diverting valve ( 19 ) to selectively feed said evaporators via respective throttle means ( 16, 17 ). The result is a sensible energy saving effect in the operation of the appliance.

1 . Refrigeration appliance, in particular of the household type, comprising at least two storage compartments ( 10 ,  11 ) adapted to hold and preserve food products at different temperatures, as well as a refrigerating circuit comprising a compressor ( 14 ), a condenser ( 15 ), valve means ( 18 ,  19 ) for diverting the flow of refrigerant medium, and an evaporator ( 12 ,  13 ) arranged in each one of said compartments, in which said evaporators are connected in series with each other, characterized in that said compressor ( 14 ) is a variable-capacity compressor, and that said valve means are constituted by a unidirectional valve ( 18 ) and a flow-diverting valve ( 19 ) to selectively feed said evaporators via respective throttle means ( 16 ,  17 ).  
     
     
         2 . Refrigeration appliance according to  claim 1 , characterized in that said throttle means ( 16 ,  17 ) are capillary tubes ensuring different flow rates, in which the capillary tube ( 16 ) associated to the evaporator ( 12 ) of the cold storage compartment has a greater flow rate than the capillary tube ( 17 ) associated to the evaporator ( 13 ) of the freezing compartment.  
     
     
         3 . Refrigeration appliance according to  claim 1  or  2 , characterized in that the compressor ( 14 ) is provided with its own automatic control logic arrangement adapted to autonomously select the operating speed thereof on the basis of a combination of the working percentages of the two compartments ( 10 ,  11 ) of the refrigeration appliance and the ON-periods of the same compartments, while privileging the one that requires the longest operating time.