[특허]Ultra-low temperature bio-sample storage system

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Ultra-low temperature bio-sample storage system

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25D-011/00
미국특허분류(USC)	062/440; 062/441; 220/592.01
출원번호	UP-0890451 (2007-08-07)
등록번호	US-7621148 (2009-12-02)
발명자 / 주소	Dain, John F. Dain, Elizabeth L. Henneman, Nicholas J.
대리인 / 주소	McTaggart, J. E.
인용정보	피인용 횟수 : 5 인용 특허 : 29

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An ultra low temperature freezer is optimized with a combination of vacuum and fiberglass insulation for long-term biological storage with accurate process cooling with critical temperature performance. A programmable cooling and cryogenic freezing system uses sealed liquid nitrogen for cooling and freezing. A hybrid completely non-mechanical system exhibits temperature uniformity and reliability, saves space, requires extremely low operating energy and minimizes need for air conditioning in the operating environment. Top-located components control the f...

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What is claimed is: 1. An ultra low temperature freezer system for preserving payloads including biological materials at predetermined fixed and programmed variable temperatures in a range from-40 degrees C. to-150 degrees C., comprising: an outer shell having a top panel, two opposite side panels, a rear panel and a bottom panel, all joined together with airtight seams to form an open-front box; an inner shell having a top panel region, two opposite side panel regions, a rear panel region and a bottom panel region, all joined together with airtight seams to form an open-front box smaller than said outer shell: a stepped door jamb made contiguous with front edges of said outer shell and said inner shell so as hold said inner shell nested within said outer shell in a manner to form an air tight insulation compartment consisting of orthogonal-shaped insulation zones at the top, two sides, back and bottom panel regions; a storage chamber having a top panel, two opposite side panels, a rear panel and a bottom panel, all joined together with airtight seams to form an open-front box smaller than said inner shell and held nested therein so as to provide a plurality of orthogonal-shaped refrigerating zones between said inner shell and said storage chamber; a main door, hingedly attached along a front side region of said outer shell, having a peripheral region configured in a stepped manner to complement said door jamb; a plurality of compliant door-sealing elements, arranged in at least two complete loops, made and arranged to fit under compression between the peripheral region of said main door in a closed disposition and said door jamb in a manner to create an air-tight seal all around the peripheral region of said main door and thus render said storage chamber as an air-tight thermally-insulated refrigerated enclosure; a plurality of thermally isolated storage compartments contained within said storage chamber, each providing an isolated storage space and an associated access door; a plurality of refrigeration evaporator tubing units each disposed in a corresponding working refrigeration zone, each tubing unit comprising at least two side-by-side parallel runs of tubing in a corresponding refrigeration zone for reliability through redundancy, each run of tubing being made capable of fully operational evaporator capability independent of the other; and a manifold valve and control system made and arranged to supply refrigerant to said system of refrigeration in an operation manner that includes options of providing constant and controlled variable temperature operation within said storage chamber. 2. The ultra low temperature freezer system as defined in claim 1 further comprising: insulation filler material disposed in at least four of the five working insulation zones and in the insulation zone of the main door, made and arranged to provide thermal insulation as well as to provide sufficient mechanical compression strength to enable the panel regions of said outer and inner shells to withstand continued operation under evacuation without excessive deformation of panel regions due to external atmospheric pressure. 3. The ultra low temperature freezer system as defined in claim 2 wherein, in at least the back and two side insulation zones, said insulation filler material is configured in two layers between said outer shell and said inner shell. 4. The ultra low temperature freezer system as defined in claim 2 further comprising: insulation zone pressurizing means for initially purging moisture and atmospheric air from the insulation zones through displacement by introduction of a dry inert gas; and evacuation means for evacuating atmospheric air from the insulation zones and for maintaining a designated degree of vacuum for enhancement of thermal insulation performance and operating efficiency of the insulation zones. 5. The ultra low temperature freezer system as defined in claim 4 wherein all panels are made from sheet stainless steel. 6. The ultra low temperature freezer system as defined in claim 2 wherein said door-sealing elements in the door of the storage chamber are configured as compliant hollow tubing and are pressurized with a compressed gas in a manner to ensure air-tight sealing around said main door for enhanced thermal insulation and overall operating efficiency, including means for releasing the pressurization when the door is to be opened for access to the storage chamber and the individual storage compartments and for then restoring pressurization once the door has been closed again for normal service. 7. The ultra low temperature freezer system as defined in claim 2 wherein liquid nitrogen is utilized as refrigerant in an evaporation process, and wherein said system further comprises: an input port made and arranged to be attached to an external source of liquid nitrogen refrigerant and to direct the refrigerant into the evaporator tubing; and an exhaust venting port made and arranged to conduct exhaust gases from the evaporation process safely to external ductwork leading to outdoor disposal facilities, so as to avoid exposure of personnel to the exhaust gases.

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이 특허를 인용한 특허 피인용횟수: 5

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Ultra-low temperature bio-sample storage system

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이 특허에 인용된 특허 (29)

이 특허를 인용한 특허 피인용횟수: 5

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Ultra-low temperature bio-sample storage system

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이 특허에 인용된 특허 (29)

이 특허를 인용한 특허 피인용횟수: 5

IPC 상위 출원인

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