[특허]Liquid delivery system with horizontally displaced dispensing point

Cryotech International, Inc.

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특허 상세정보

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Liquid delivery system with horizontally displaced dispensing point

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65B-001/20 B65B-001/00
미국특허분류(USC)	141/082; 141/011; 141/069; 141/103; 053/431; 062/052.1
출원번호	US-0890246 (2004-07-13)
등록번호	US-7281550 (2007-10-16)
발명자 / 주소	Ziegler,Alan T.
출원인 / 주소	Cryotech International, Inc.
대리인 / 주소	Stainbrook & Stainbrook, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 5

초록
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A method and apparatus for the efficient and controllable delivery of cryogen liquid droplets into thin walled containers. Discharge of the droplets is facilitated using a horizontal displacement assembly to transport metered droplets from a liquid dosing unit to the point of injection above the container. The horizontal displacement assembly may be provided with internal heaters to prevent freeze up, and a sensor to confirm droplet discharge. It may also be provided with a separate source of heated nitrogen gas, which can be used to back purge the dispe...

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What is claimed is: 1. A method for dispensing liquid cryogen into a container prior to sealing, comprising; forming droplets of cryogen liquid and dispensing them in a generally vertical direction from a dosing head; providing a transport pathway for redirecting the flow of said dispensed droplets from the generally vertical to a generally horizontal direction, said pathway in fluid communication with said dosing head, and having a predetermined length defined by first and second ends; positioning the transport pathway below the dispensing head so as to receive the droplets dispensed from said dosing head, directing the dispensed droplets to said pathway at a point near a first end of the pathway, transporting the liquid droplets along the length of the pathway to its second end; and, thereafter directing the flow of said liquid droplets for injection into a container; wherein the flow of said liquid droplets is directed to a generally horizontal path for injection into a container. 2. The method of claim 1 wherein the flow of said liquid droplets is directed to a generally vertical path for injection into a container. 3. The method of claim 1 including the step of heating the transport pathway over a portion of its length. 4. The method of claim 1 including the step of injecting a gas near the first end of the transport pathway. 5. The method of claim 1 further including the step of detecting the presence of a liquid droplet in said transport pathway. 6. The method of claim 5, an error signal is generated if the presence of a liquid droplet is not confirmed. 7. An injection displacement assembly for transporting droplets of liquid cryogen from a liquid cryogen dosing head to a container, said injection displacement assembly including: an assembly body of a predetermined dimension having a first end and a second end, a transport pathway internal to and running the length of said assembly body from said first end to said second end, said transport pathway having a central axis, a dose capture guide in fluid communication with said pathway near its first end to direct a droplet dispensed from the dosing head to said internal transport pathway; and, an injection head extending from the assembly body at its second end and having therein an internal pathway in fluid communication with the transport pathway, to direct the liquid flow path to the point of injection, wherein the injection head redirects the liquid flow path from the central axis of the pathway to a direction at an angle to the central axis. 8. An injection displacement assembly for transporting droplets of liquid cryogen from a liquid cryogen dosing head to a container, said injection displacement assembly including: an assembly body of a predetermined dimension having a first end and a second end, a transport pathway internal to and running the length of said assembly body from said first end to said second end, said transport pathway having a central axis, a dose capture guide in fluid communication with said pathway near its first end to direct a droplet dispensed from the dosing head to said internal transport pathway; and, an injection head extending from the assembly body at its second end and having therein an internal pathway in fluid communication with the transport pathway, to direct the liquid flow path to the point of injection, wherein the injection head redirects the liquid flow path along the central axis of the pathway to a direction perpendicular to said central axis. 9. An injection displacement assembly for transporting droplets of liquid cryogen from a liquid cryogen dosing head to a container, said injection displacement assembly including: an assembly body of a predetermined dimension having a first end and a second end, a transport pathway internal to and running the length of said assembly body from said first end to said second end, said transport pathway having a central axis, a dose capture guide in fluid communication with said pathway near its first end to direct a droplet dispensed from the dosing head to said internal transport pathway; and, an injection head extending from the assembly body at its second end and having therein an internal pathway in fluid communication with the trap sport pathway, to direct the liquid flow path to the point of injection, wherein the injection head redirects the liquid flow path from the central axis to one that is not concentric and coincident with the central axis. 10. The assembly of claim 9 wherein the injection head redirects the liquid flow path from the central axis of the pathway to a direction at an angle to the central axis. 11. The assembly of claim 9 wherein the injection head redirects the liquid flowpath along the central axis of the pathway to a direction perpendicular to said central axis. 12. The apparatus of claim 9 wherein said assembly body is an elongate body. 13. The apparatus of claim 12 wherein the elongate body includes heater for heating said body. 14. The apparatus of claim 13 wherein said heater includes at least one electrical resistance heating element. 15. The apparatus of claim 12 wherein said elongate body includes a thermocouple embedded therein for measuring the temperature of the elongate body, and a controller for receiving a signal from the thermocouple representative of the elongate body temperature, said controller programmed to adjust power to the beater in order to regulate the temperature of the elongate body within a preselected range. 16. The apparatus of claim 9, further including means for injecting gas into the transport pathway proximate its first end. 17. The apparatus of claim 9 wherein the injection head has a reduced dimension section compared to the dimension of the elongate body from which it extends. 18. The apparatus of claim 9 further including a connecting collar disposed coaxial to the dose capture guide. 19. The apparatus of claim 9 in which the transport pathway is inclined downwardly from the horizontal. 20. The apparatus of claim 19 where the degree of incline is between 2째 to 4째 from horizontal. 21. The apparatus of claim 9 further including a sensor to monitor the presence or absence of a liquid droplet in the transport pathway. 22. The apparatus of claim 21 wherein the sensor comprises opposing optical fibers positioned along the transport pathway. 23. The apparatus of claim 22 wherein the optical fibers are positioned longitudinally at each end of the transport pathway. 24. The apparatus of claim 22 wherein the opposing optical fibers are positioned at a point along the transport pathway, orthogonal to said pathway. 25. The apparatus of claim 24, wherein the opposing optical fibers are positioned at the end of the transport pathway, at the injection head. 26. The apparatus of claim 9 further including means to close off the end of the internal pathway at the injection head, and means to introduce a gas into the transport pathway proximate said closed offend.

인용문헌 (5)

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Liquid delivery system with horizontally displaced dispensing point

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Liquid delivery system with horizontally displaced dispensing point

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