Hybrid cooling appliance

Patent metadata

Field	Value
Publication number	US-11067328-B2
Application number	US-201515778931-A
Country	US
Kind code	B2
Filing date	Nov 26, 2015
Priority date	Nov 26, 2015
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A hybrid cooling system and a method of controlling the same. The hybrid cooling system comprises an absorption refrigeration system, a compression refrigeration system and a controller which operates the absorption refrigeration system and the compression refrigeration system in three modes.

First claim

What is claimed is:

1. A hybrid cooling appliance, comprising:
a cabinet having cooling mechanicals mounted on said cabinet, said cabinet having a compartment;
at least one door positioned on a front side of said cabinet covering an opening;
said cooling mechanicals including an evaporator on said cabinet, an absorption refrigeration system and a compressor refrigeration system, comprising a DC compressor, said absorption refrigeration system and said compressor refrigeration system both being capable of cooling the entire compartment;
a controller which operates said absorption refrigeration system and said compressor refrigeration system, said controller having AC and DC power input and electric control of a gas valve, said controller capable of operating in three modes:
a first mode wherein one of said absorption refrigeration system or said compressor refrigeration system operates alone;
a second mode wherein the other of said absorption refrigeration system or said compressor refrigeration system operates alone; and,
a third mode wherein both said absorption refrigeration system and said compressor refrigeration system operate simultaneously;

wherein said evaporator comprises a compressor evaporator and an absorption evaporator;
further wherein said compressor evaporator and said absorption evaporator are one of in direct contact, in thermal communication with separate thermal transfer plates or in thermal communication with a single thermal transfer plate.

2. The hybrid cooling appliance of claim 1 comprising said controller which provides for one or more of automated selection of energy supply and manual selection of energy supply.

3. The hybrid cooling appliance of claim 1 wherein said absorption refrigeration system includes a gas fuel supply.

4. The hybrid cooling appliance of claim 3 wherein said absorption refrigeration system further comprises an electric heater.

5. The hybrid cooling appliance of claim 4 wherein said electric heater comprises one or both of an alternating current (AC) heater or a direct current (DC) heater.

6. The hybrid cooling appliance of claim 1 wherein said compressor refrigeration system includes a refrigerator circuit.

7. The hybrid cooling appliance of claim 1 further comprising an inverter.

8. The hybrid cooling appliance of claim 1 further comprising a fresh food refrigerator in said cabinet.

9. The hybrid cooling appliance of claim 8 further comprising a freezer in said cabinet.

10. The hybrid cooling appliance of claim 1 wherein said single thermal transfer plate or said one or more separate thermal transfer plates further comprise a plurality of cooling fins.

11. The hybrid cooling appliance of claim 1 wherein the hybrid cooling appliance is optimized for operation for at least one of: when reduced gas consumption or when grid power is available, performance when both gas and grid power are available, or gas when grid is not available and an optimized average.

12. The hybrid cooling appliance of claim 1 , wherein said compressor refrigeration system and said absorption refrigeration system are mounted to an insulator.

13. The hybrid cooling appliance of claim 12 , said insulator being a foam material.

14. The hybrid cooling appliance of claim 12 , said insulator positioned on said cabinet.

15. The hybrid cooling appliance of claim 14 , said cabinet including an opening to accept said insulator.

16. The hybrid cooling appliance of claim 12 , wherein conduit for the evaporator for each of said absorption refrigeration system and said compressor refrigeration system extend through said insulator.

17. The hybrid cooling appliance of claim 16 , wherein said absorption refrigeration system and said compressor refrigeration system comprises one of a single evaporator or at least two evaporators.

18. The hybrid cooling appliance of claim 12 , further comprising an ice maker which is disposed adjacent to the evaporator of said compressor refrigeration system.

19. The hybrid cooling appliance of claim 12 , said compressor refrigeration system cooling a freezer and said absorption refrigeration system cooling a fresh food refrigerator.

20. The hybrid cooling appliance of claim 19 , said compressor refrigeration system and said absorption refrigeration system both being in cooling communication with at least one of the fresh food refrigerator or the freezer.

21. A method of operating a hybrid refrigerator, comprising:
cooling a refrigerator cabinet compartment with a DC compressor refrigeration system with a compression system evaporator in said refrigerator cabinet compartment when an ambient temperature is in a first condition relative to a preselected cabinet compartment temperature;
cooling said refrigerator cabinet compartment with an absorption refrigeration system with an absorption refrigeration system evaporator on said refrigerator cabinet compartment when said preselected cabinet compartment temperature is obtained or when a reduced sound volume is desirable;
providing that said DC compressor refrigeration system evaporator and said absorption refrigeration system evaporator are one of in direct contact, in thermal communication with separate thermal transfer plates or in thermal communication with a single thermal transfer plate;
determining, with a controller having both AC and DC input and electric control of a gas valve, when to use one or both of said DC compressor refrigeration system and said absorption refrigeration system and which of said DC compressor refrigeration system or said absorption refrigeration system.

22. The method of claim 21 further comprising powering off said DC compressor refrigeration system when electricity is not available.

23. The method of claim 21 further comprising powering off said DC compressor refrigeration system when said preselected cabinet temperature is reached.

24. The method of claim 21 further comprising selecting between one or both of said DC compressor refrigeration system and said absorption refrigeration system.

25. The method of claim 21 further comprising utilizing said DC compressor refrigeration system when higher speed cooling is desired.

26. The method of claim 21 where one of the absorption refrigeration system or the DC compressor refrigeration system is used to determine the need to start the other of the absorption refrigeration system or the DC compressor refrigeration system and where this determination is determined by measuring a thermal response of the temperature in the refrigerator cabinet compartment after starting a first of the absorption refrigeration system or the DC compressor refrigeration system.

27. The method of claim 21 where a condenser of the DC compressor refrigeration system is actively cooled with a condenser fan and wherein said condenser fan is positioned in such a way that air-flow is also used to cool at least one of an absorber or the condenser of the absorption refrigeration system.

Assignees

• Dometic Sweden Ab

Inventors

• Lundqvist Anton
• Yang Xingbiao
• Zhang Yongbin
• Li Junbao
• Mcconnell Patrick
• Meyers Clayton

Classifications

• F25B25/02 Primary

  Compression-sorption machines, plants, or systems · CPC title

• F25D11/00

  Self-contained movable devices, e.g. domestic refrigerators · CPC title

• F25B25/00

  Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 · CPC title

• F25D11/022

  with two or more evaporators · CPC title

• F25D11/025 Primary

  using primary and secondary refrigeration systems · CPC title