Abstract: A cascade refrigeration system having a first refrigeration stage that defines a first fluid circuit and includes a first expansion device and a second refrigeration stage that defines a second fluid circuit, fluidically isolated from the first fluid circuit, that includes a second expansion device. The second expansion device includes a first capillary tube and a second capillary tube in parallel flow arrangement, and a second stage valve in fluid communication with the second capillary tube for selectively controlling flow of the second refrigerant through the second capillary tube in response to at least one operating condition of the refrigeration system without interrupting flow of the second refrigerant through the first capillary tube. The refrigeration system further includes at least one interstage heat exchanger in heat transferring communication with the first and second fluid circuits to exchange heat between the first and second refrigerants.

Abstract: An evaporator in a refrigerant circuit, having a bottom-side inlet chamber which is connected in flow terms to an evaporator outlet side via evaporator tubes, a separator being integrated into the evaporator inlet chamber, in which separator a refrigerant which is expanded in an expansion member is divided as a two-phase liquid/vapour mixture into a vapour phase and into a liquid phase which is separate therefrom, the vapour phase being conducted via a bypass line to the evaporator outlet side, and the liquid phase being conducted counter to the direction of gravity into the evaporator tubes, to be precise at least one evaporator tube being a flat tube with a plurality of micro-channels, through which the refrigerant is guided, wherein, as a first flat tube, the evaporator flat tube is a constituent part of a first evaporator tube set which guides the refrigerant from the bottom-side inlet chamber counter to the direction of gravity into an upper-side deflecting chamber, and wherein the refrigerant is guided

Abstract: An evaporator in a refrigerant circuit, having a bottom-side inlet chamber which is connected in flow terms to an evaporator outlet side via evaporator tubes, a separator being integrated into the evaporator inlet chamber, in which separator a refrigerant which is expanded in an expansion member is divided as a two-phase liquid/vapour mixture into a vapour phase and into a liquid phase which is separate therefrom, the vapour phase being conducted via a bypass line to the evaporator outlet side, and the liquid phase being conducted counter to the direction of gravity into the evaporator tubes, to be precise at least one evaporator tube being a flat tube with a plurality of micro-channels, through which the refrigerant is guided, wherein, as a first flat tube, the evaporator flat tube is a constituent part of a first evaporator tube set which guides the refrigerant from the bottom-side inlet chamber counter to the direction of gravity into an upper-side deflecting chamber, and wherein the refrigerant is guided

Abstract: A refrigerator having a refrigerating circuit with a compressor, a condenser and two evaporators placed in different compartments of the appliance comprises valve means for alternatively directing refrigerant flow towards one of the evaporators. One of the evaporators is in heat exchange relationship with a phase change material.

Abstract: A refrigerator having a refrigerating circuit with a compressor, a condenser and two evaporators placed in different compartments of the appliance comprises valve means for alternatively directing refrigerant flow towards one of the evaporators.