DUAL EVAPORATOR DEFROST SYSTEM FOR AN APPLIANCE
First Claim
1. An appliance comprising:
- a first refrigerated enclosure;
a second refrigerated enclosure;
a compression stage;
a condensation stage;
an evaporation stage comprising;
a first evaporator for the first refrigerated enclosure; and
a second evaporator for the second refrigerated enclosure;
a condensation stage bypass line positioned between an output of the compression stage and the second evaporator;
a first valve in the condensation stage bypass line and being operative to allow a supply of refrigerant to bypass the condensation stage during a defrost mode;
a line from the second evaporator to the compression stage;
a second valve positioned in the line from the second evaporator to the compression stage and being operative to block a supply of refrigerant from the second evaporator to the compression stage during the defrost mode; and
an additional line positioned between the second evaporator and the first evaporator, the additional line carrying the supply of refrigerant from the second evaporator to the first evaporator in the defrost mode.
2 Assignments
0 Petitions
Accused Products
Abstract
An appliance includes a compression stage, a condensation stage, and an evaporation stage. The evaporation stage includes a first evaporator for a first refrigerated enclosure and a second evaporator for a second refrigerated enclosure. A first valve in a condensation stage bypass line is openable to allow a supply of refrigerant to bypass the condensation stage during a defrost mode, where a condensation stage bypass line is positioned between an output of the compression stage and the second evaporator. A second valve is positioned in a line from the second evaporator to the input to the compression stage and is closeable to block a supply of refrigerant from the second evaporator to the compression stage during the defrost mode. An additional line positioned between the second evaporator and the first evaporator carries the supply of refrigerant from the second evaporator to the first evaporator in the defrost mode.
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Citations
16 Claims
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1. An appliance comprising:
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a first refrigerated enclosure; a second refrigerated enclosure; a compression stage; a condensation stage; an evaporation stage comprising; a first evaporator for the first refrigerated enclosure; and a second evaporator for the second refrigerated enclosure; a condensation stage bypass line positioned between an output of the compression stage and the second evaporator; a first valve in the condensation stage bypass line and being operative to allow a supply of refrigerant to bypass the condensation stage during a defrost mode; a line from the second evaporator to the compression stage; a second valve positioned in the line from the second evaporator to the compression stage and being operative to block a supply of refrigerant from the second evaporator to the compression stage during the defrost mode; and an additional line positioned between the second evaporator and the first evaporator, the additional line carrying the supply of refrigerant from the second evaporator to the first evaporator in the defrost mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A control system for a refrigerator, comprising:
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a compression stage; a condensation stage; an evaporation stage comprising; at least one first evaporator configured to providing cooling at above a freezing temperature; and at least one second evaporator configured to provide cooling temperatures below the freezing temperature; a condensation stage bypass line configured to direct a supply of refrigerant from the compression stage directly to the at least one second evaporator in a defrost mode of the control system; a first valve positioned between the at least one second evaporator and the compression stage and being operative to block the supply of refrigerant from the at least one second evaporator to the compression stage during the defrost mode; and a line positioned between the at least one second evaporator and the at least one first evaporator configured to direct the supply of refrigerant to the at least one first evaporator during the defrost mode. - View Dependent Claims (10, 11, 12, 13)
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14. A control system for a refrigerator including two independently controllable evaporators, comprising:
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a compression stage, a condensation stage and an evaporation stage that includes a first evaporator for refrigerator compartment cooling and a second evaporator for freezer compartment cooling; a condensation stage bypass line positioned between the compression stage and the second evaporator, the condensation stage bypass line being configured to carry a supply of refrigerant from the compression stage to the second evaporator in a defrost mode of the refrigerator; and a line between the second evaporator and the first evaporator and configured to carry the supply of refrigerant from the second evaporator to the first evaporator in the defrost mode. - View Dependent Claims (15, 16)
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Specification