[특허]Portable icemaker and method for making ice

Camp Ice, Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Portable icemaker and method for making ice

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25C-005/18 F25C-005/00 F25B-015/10
미국특허분류(USC)	062/344; 062/490; 062/101
출원번호	US-0858768 (2004-06-02)
발명자 / 주소	Wagner,Anthony S.
출원인 / 주소	Camp Ice, Inc.
대리인 / 주소	The Culbertson Group, P.C.
인용정보	피인용 횟수 : 1 인용 특허 : 4

초록
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An icemaking apparatus includes an evaporator tube, a driving vessel charged with liquid ammonia and a driving gas, a heat source, a return system, and a target material reservoir adapted to be placed in an operating position over the evaporator tube. The evaporator tube has a heat transfer feature formed on and extending from a generally cylindrical outer evaporator tube surface. The heat source applies heat to the driving vessel to force liquid ammonia through an evaporator supply line to an expansion chamber inlet associated with the evaporator tube. The liquid ammonia goes to a gas as it enters the expansion chamber portion of the evaporator tube resulting in a transfer of heat from water or other target material contained in the target material reservoir secured over the evaporator tube in the operating position. The return system returns ammonia and hydrogen gas from the evaporator to the driving vessel.

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청구항
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What is claimed is: 1. An apparatus including: (a) an elongated evaporator tube having a generally cylindrical outer surface with a heat transfer feature formed thereon, the heat transfer feature including a projection extending from the outer surface of the evaporator tube; (b) a driving vessel charged with liquid ammonia and a driving gas at an operating pressure and temperature; (c) a heat source adapted to apply sufficient heat to the driving vessel to force liquid ammonia through an evaporator supply line to an expansion chamber inlet associated with the evaporator tube; (d) a return system facilitating the return of ammonia from an expansion chamber outlet of the evaporator tube to the driving vessel; and (e) a target material reservoir having a central opening extending there through, the central opening having a first portion with a size and shape closely corresponding to the cylindrical outer surface of the evaporator tube, and also having a second portion comprising an elongated slot having a shape closely corresponding to an outer surface of the projection. 2. The apparatus of claim 1 wherein the heat transfer feature comprises a helical ridge extending from the cylindrical outer surface of the evaporator tube and wherein the second portion of the target material reservoir central opening includes a helical slot corresponding to the helical ridge so as to be threadable over the helical ridge. 3. The apparatus of claim 2 further including an insulating enclosure surrounding lateral sides and distal end of the target material reservoir when the target material reservoir is in an operating position received over the evaporator tube. 4. The apparatus of claim 1 further including a heat conductive base extending in a plane transverse to the longitudinal axis of the evaporator tube, and wherein the target material reservoir is adapted to substantially abut the heat conductive base when the target material reservoir is in an operating position received over the evaporator tube. 5. The apparatus of claim 1 further including a housing surrounding the heat source, driving vessel, and return system. 6. The apparatus of claim 1 wherein the return system includes a water and ammonia mixture reservoir connected to an evaporator outlet line, an absorber vessel connected to receive fluid from the water and ammonia mixture reservoir, a flow restrictor, an ammonia separator connected between the absorber vessel and the driving vessel, and an ammonia condenser associated with the ammonia separator. 7. The apparatus of claim 1 wherein the first portion of the target material reservoir central opening corresponds closely in shape to the cylindrical outer surface of the evaporator tube and the second portion of the target material reservoir central opening comprises a J-shaped or L-shaped slot. 8. A method including the steps of: (a) applying heat to a driving vessel charged with liquid ammonia and driving gas at atmospheric temperature and at an operating pressure; (b) enabling the liquid ammonia and driving gas to expand into an elongated evaporator tube to enable at least a portion of the liquid ammonia to go to a gaseous state; (c) transferring heat to a cylindrical outer surface of the evaporator tube and a heat transfer feature on the evaporator tube from a target material within a target material reservoir, the target material reservoir having a cavity therein with a first portion having a size and shape closely corresponding to the cylindrical outer surface of the evaporator tube and having a second portion comprising an elongated slot having a shape closely corresponding to an outer surface of the heat transfer feature, and the target material reservoir being positioned in an operating position in which the evaporator tube extends through the target material reservoir cavity and the heat transfer feature extends into the slot; and (d) condensing the ammonia gas to a liquid state and returning the resulting liquid ammonia and driving gas to the driving vessel. 9. The method of claim 8 wherein the heat transfer feature comprises a helical ridge and the elongated slot making up the second portion of the target material reservoir comprises a helical slot corresponding to the helical ridge, and further including the step of threading the evaporator tube and helical ridge into the cavity in the target material reservoir to place the target material reservoir in the operating position. 10. The method of claim 9 further including the step of transferring heat to a base plate from a bottom surface of the target material reservoir, the base plate extending transverse to the longitudinal axis of the evaporator tube. 11. The method of claim 8 further including the step of securing the target material reservoir over the evaporator tube by cooperation between the heat transfer feature the slot in the target material reservoir cavity. 12. The method of claim 11 further including the step of transferring heat to a base plate from a bottom surface of the target material reservoir, the base plate extending transverse to the longitudinal axis of the evaporator tube. 13. The method of claim 8 wherein the operating pressure is a pressure between approximately 325 psig and 450 psig and the operating temperature is an atmospheric temperature. 14. The method of claim 8 wherein the step of applying heat to the driving vessel includes applying heat from the combustion of a fuel. 15. The method of claim 8 further including the step of directing ammonia gas and driving gas from the evaporator tube to a water/ammonia mixture vessel. 16. An apparatus including: (a) an elongated evaporator tube having a generally cylindrical outer surface with a helical ridge formed thereon; (b) a driving vessel charged with liquid ammonia and a driving gas at an operating pressure and temperature; (c) a heat source adapted to apply sufficient heat to the driving vessel to force liquid ammonia through an evaporator supply line to an expansion chamber inlet associated with the evaporator tube; (d) a return system facilitating the return of ammonia from an expansion chamber outlet of the evaporator tube to the driving vessel; and (e) a target material reservoir having a central opening extending there through, the central opening having a size and shape closely corresponding to the cylindrical outer surface and heat transfer feature of the evaporator, and also having a helical portion corresponding to the helical ridge so as to be threadable over the helical ridge. 17. An apparatus including: (a) an elongated evaporator tube having a generally cylindrical outer surface with a heat transfer feature formed thereon, the heat transfer feature comprising a projection extending from the cylindrical outer surface of the evaporator tube; (b) a driving vessel charged with liquid ammonia and a driving gas at an operating pressure and temperature; (c) a heat source adapted to apply sufficient heat to the driving vessel to force liquid ammonia through an evaporator supply line to an expansion chamber inlet associated with the evaporator tube; (d) a return system facilitating the return of ammonia from an expansion chamber outlet of the evaporator tube to the driving vessel; and (e) a target material reservoir having a central opening extending there through, the central opening having a size and shape closely corresponding to the cylindrical outer surface of the evaporator tube and having a J-shaped or L-shaped slot formed therein to closely receive the projection extending from the cylindrical outer surface of the evaporator tube. 18. A method including the steps of: (a) applying heat to a driving vessel charged with liquid ammonia and driving gas at atmospheric temperature and at an operating pressure; (b) enabling the liquid ammonia and driving gas to expand into an elongated evaporator tube to enable at least a portion of the liquid ammonia to go to a gaseous state; (c) transferring heat to the outer surface of the evaporator tube and a heat transfer feature from a target material in a target material reservoir when the target material reservoir is in an operating position with respect to the evaporator tube and heat transfer feature, the heat transfer feature comprising a helical ridge on the evaporator tube; (d) condensing the ammonia gas to a liquid state and returning the resulting liquid ammonia and driving gas to the driving vessel; and (e) threading the evaporator tube and helical ridge into a corresponding helical grooved passage through the target material reservoir to place the target material reservoir in the operating position. 19. A method including the steps of: (a) applying heat to a driving vessel charged with liquid ammonia and driving gas at atmospheric temperature and at an operating pressure; (b) enabling the liquid ammonia and driving gas to expand into an elongated evaporator tube to enable at least a portion of the liquid ammonia to go to a gaseous state; (c) transferring heat to the outer surface of the evaporator tube and a heat transfer feature on the evaporator tube from a target material within a target material reservoir, the reservoir being in an operating position closely surrounding the evaporator tube and heat transfer feature; (d) condensing the ammonia gas to a liquid state and returning the resulting liquid ammonia and driving gas to the driving vessel; and (e) securing the target material reservoir over the evaporator tube by cooperation between a projection from the evaporator tube and a projection receiving slot in the target material reservoir and wherein the heat transfer feature comprises the projection from the evaporator tube.

이 특허에 인용된 특허 (4)

이 특허를 인용한 특허 피인용횟수: 1

Whillock, Sr., Donald. Portable cooler with internal ice maker. USP2012118307664.

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Portable icemaker and method for making ice

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Portable icemaker and method for making ice

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이 특허에 인용된 특허 (4)

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