[특허]Refrigeration apparatus and method

THE SURE CHILL COMPANY LIMITED

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Refrigeration apparatus and method

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25D-025/00 F25D-011/00 F25D-003/06 F25D-017/02
출원번호	US-0003386 (2016-01-21)
등록번호	US-9644882 (2017-05-09)
우선권정보	GB-1313154.5 (2013-07-23); GB-1313633.8 (2013-07-30)
발명자 / 주소	Tansley, Ian
출원인 / 주소	THE SURE CHILL COMPANY LIMITED
대리인 / 주소	Perkins Coie LLP
인용정보	피인용 횟수 : 0 인용 특허 : 20

초록
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The disclosure describes a refrigeration device. The refrigeration device includes a cold store, positioned next to a reservoir having a head region and a body region, and a payload space positioned next to the reservoir opposite the cold store. The reservoir includes a cooling fluid (in many cases, water). A cooling element in the cold store absorbs heat from fluid contained in the head region of the reservoir. The fluid in the head region cools the fluid in the body region, which in turn cools the payload. In some embodiments, the body region has a greater volume than the head region which in turn increases the thermal resistance of the body region. The refrigeration device, once at an in use equilibrium, is resistant to temperature change in a payload container. The stable temperature is maintained at a critical temperature of the cooling fluid—the critical temperature being a temperature wherein the cooling fluid is of lower density both above and below the critical temperature. The natural critical temperature for water is 4 degrees Celsius.

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1. A cooling apparatus comprising: a cold store portion for storing at least one cooling element;a fluid reservoir, the reservoir having a head region and a body region below the head region each arranged, in use, to contain a fluid to be cooled;a cold store heat exchange portion interposed between the at least one cooling element and the headspace of the fluid reservoir and enabling thermal communication between the at least one cooling element and the fluid in the head region of the fluid reservoir; anda payload heat exchange portion interposed between the body region of the fluid reservoir and an opposing side of the payload heat exchange portion and enabling thermal communication between the fluid in the body region and the opposing side of the payload heat exchange portion. 2. The apparatus according to claim 1, wherein the payload heat exchange portion and cold store portion are positioned on substantially opposite sides of the fluid reservoir. 3. The apparatus according to claim 2, arranged wherein in use the payload heat exchange portion is provided in substantially direct thermal contact with the fluid in the fluid reservoir below the head region and not with fluid within the head region. 4. The apparatus according to claim 1, further comprising: a payload container, wherein in use the opposing side of the payload heat exchange portion is arranged to allow flow of thermal energy from an interior volume of the payload container to the fluid in the body region of the fluid reservoir. 5. The apparatus according to claim 1, wherein the cold store heat exchange portion is arranged, in use, to be substantially direct thermal contact with a cooling element in the cold store portion. 6. The apparatus according to claim 1, wherein the cold store portion is sized to receive a plurality of cold packs. 7. The apparatus according to claim 5, further comprising: resilient urging means for maintaining the cooling element in substantially direct thermal contact with the cold store heat exchange portion. 8. The apparatus according to claim 7, wherein the resilient urging means comprises a spring mechanism arranged to provide physical force to the cooling element thereby urging the cooling element up against the cold store heat exchange portion. 9. The apparatus according to claim 1, wherein a head volume of the head region is greater than a body volume of the body region. 10. The apparatus according to claim 9, wherein the body region and the head region of the fluid reservoir are constructed as discrete volumes with an overlapping intersection. 11. The apparatus according to claim 1, wherein the fluid storage reservoir further comprises: a plurality of fluid-filled cells in thermal contact with one another, each cell comprising fluid contained within a cell wall, the cell walls of respective adjacent cells being arranged to allow transfer of thermal energy between fluid in respective adjacent cells in thermal contact. 12. The apparatus according to claim 11, wherein the plurality of cells substantially fill the volume of the fluid reservoir. 13. The apparatus according to claim 1, wherein the fluid reservoir further comprises an internal wall arranged to divide the reservoir into compartments. 14. The apparatus according to claim 13, wherein the at least one internal wall has a sufficiently low thermal resistance to allow thermal equilibration of fluid on opposite respective sides of the internal wall. 15. The apparatus according to claim 13, wherein the at least one internal wall is thermally insulating. 16. The apparatus according to any one of claim 13, wherein the compartments are in fluid isolation from one another. 17. The apparatus according to any one of claim 13, wherein at least two compartments are in fluid communication with one another. 18. The apparatus according to claim 1, wherein the fluid reservoir contains a thermal fluid having a critical temperature, the critical temperature being a temperature at which the thermal fluid has the greatest density, and the thermal fluid remains in the fluid state both above and below the critical temperature. 19. The apparatus according to claim 1 wherein the cooling element comprises a powered refrigeration unit or element.

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Refrigeration apparatus and method

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Refrigeration apparatus and method

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