Surge dampening device for cryogenic vaporizers and heater elements
AssigneeCryoquip, Inc.
InventorPatrick R. Billman
Life of this patent
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Abstract
An improved cryogenic vaporizer and heat-transfer element comprising a tubular housing having outer fin members, a central passage having an upper portion substantially closed to provide a restricted flow of fluid therefrom, an intermediate portion defining a deceleation chamber, and a lower portion in which is mounted a hollow rod that substantially controls the amplitude of liquid surging within the central passage of the housing.
Claims17
An improved cryogenic vaporizer and heat-transfer element comprising:
- a tubular housing opened at both ends and having a least one outer fin member, and a central passage formed therein including an upper portion, an intermediate portion, and a lower port ion;
- a plurality of radially extending internal projections having outer contacting surfaces forming a cylindrical opening in said central passage;
- a plurality of longitudinal passageways symmetrically arranged about the inner wall of said finned tube;
- means for closing said upper portion of said cylindrical opening, whereby fluid flow is restricted so as to flow upward through said longitudinal passageways, said intermediate portion being unrestricted, thereby providing an enlarged area to decelerate movement of liquid therein;
- dampening means mounted in the cylindrical opening of said lower portion of said central passage whereby a boiling zone for cryogenic liquid is defined so as to substantially control the amplitude of liquid surging within said central passage of said tube.
In combination, a cryogenic vaporizer and heat-transfer element formed having a heat-exchange tube which includes a plurality of external fins extending radially therefrom and a central passage, a plurality of radially extending internal projections having outer contacting surfaces forming a cylindrical opening in said central passage and defining a plurality of longitudinal passageways symmetrically arranged about the inner wall of said finned tube, wherein the improvement comprises:
- an upper portion, an intermediate portion, and a lower portion;
- means for closing said cylindrical opening and restricting fluid flow through the longitudinal passageways of said upper portion of said central passage, said intermediate portion being unrestricted, thereby providing an enlarged area to decelerate movement of liquid therein;
- dampening means mounted in said cylindrical opening of said lower portion of said central passage wherein a boiling zone for the cryogenic liquid is defined so as to substantially control the amplitude of liquid surging within said central passage of said tube.
Dependencies are inferred from the claim text.