Claims
- 1. A refrigeration circuit comprising:
- compressor means;
- a condenser connected to receive refrigerant discharged from said compressor means;
- a first evaporator connected to receive at least a portion of the refrigerant discharged from said condenser;
- a second evaporator connected to receive at least a portion of the refrigerant discharged from said first evaporator;
- flow control means connected to receive at least a portion of the refrigerant discharged from said first evaporator and at least a portion of the refrigerant discharged from said second evaporator, said flow control means being repeatedly operable to alternately connect one of said first evaporator and said second evaporator at a time in exclusive refrigerant flow relationship with said compressor means;
- a first conduit connecting the outlet of said second evaporator to said flow control means;
- a second conduit connecting said condenser to the inlet of said first evaporator; and
- a third conduit coupled to the inlet of said second evaporator, said first conduit being at least partially disposed in a first heat transfer arrangement with at least a portion of said second conduit and being at least partially disposed in a second heat transfer arrangement with at least a portion of said third conduit.
- 2. A refrigeration circuit in accordance with claim 1 further comprising an accumulator disposed in said first conduit between said second evaporator and said first heat transfer arrangement.
- 3. A refrigeration circuit in accordance with claim 1 wherein said first and second heat transfer arrangements are both counterflow heat transfer arrangements.
- 4. A refrigeration circuit in accordance with claim 1 wherein said second conduit includes a first capillary tube, said first capillary tube forming at least part of said first heat transfer arrangement, and said third conduit includes a second capillary tube, said second capillary tube forming at least part of said second heat transfer arrangement.
- 5. A refrigeration circuit comprising:
- a compressor;
- a plurality of evaporators, one of said evaporators being arranged to operate at a temperature lower than the operating temperature of another of said evaporators;
- a flow controller connected to receive at least a portion of the refrigerant discharged from each of said evaporators, said flow controller being repeatedly operable to alternately connect either of said evaporators at a time in exclusive refrigerant flow relationship with said compressor;
- a first conduit connected to the inlet of said one evaporator; and
- a second conduit connected to the outlet of said one evaporator, said second conduit being at least partially disposed in a first heat transfer relationship with said first conduit.
- 6. A refrigeration circuit in accordance with claim 5 wherein said first heat transfer arrangement is a counterflow heat transfer arrangement.
- 7. A refrigeration circuit in accordance with claim 5 wherein said second conduit includes an accumulator disposed in the refrigerant flow path between said one evaporator and said first heat transfer arrangement.
- 8. A refrigeration circuit in accordance with claim 5 wherein said first conduit includes a capillary tube.
- 9. A refrigeration circuit in accordance with claim 5 further comprising a third conduit connected to the inlet of another one of said evaporators, said second conduit being at least partially disposed in a second heat transfer arrangement with said third conduit.
- 10. A refrigeration circuit in accordance with claim 9 wherein said second heat transfer arrangement is a counterflow heat transfer arrangement.
- 11. A refrigeration circuit in accordance with claim 9 wherein said third conduit includes a capillary tube.
Parent Case Info
This application is a continuation of application Ser. No. 07/612,051, filed Nov. 9, 1990, now abandoned.
US Referenced Citations (3)
Continuations (1)
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Number |
Date |
Country |
Parent |
612051 |
Nov 1990 |
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