The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1993
Filed:
Mar. 16, 1992
Lawrence Z Wieder, Poway, CA (US);
Cryoquip, Inc., Murrieta, CA (US);
Abstract
A single pass ambient air heat exchanger for vaporizing and heating cryogenic liquids includes a plurality of vertically mounted and parallel connected heat exchange tubes. Each tube has plurality of external fins and a plurality of internal peripheral passageways symmetrically arranged about and in fluid communication with a central opening, preferably circular in cross section. A solid bar or rod extends within the central opening for a predetermined length of each tube to increase the rate of heat transfer between the cryogenic fluid in its vapor phase and the ambient air as compared to the rate of heat between the fluid in its vapor phase and the air in an unblocked tube so that the fluid is raised from its boiling temperature at the bottom of the tubes to a temperature at the top suitable for manufacturing and other operations.