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. 01, 1991
Filed:
May. 19, 1989
Geoffrey Batchelder, Sunnyvale, CA (US);
Other;
Abstract
A fluid heating system, which includes a set of lamps emitting infrared or longer wavelength radiation. The fluid to be heated flows through chemically inert tubing while absorbing radiation from the lamps. The lamps are separated from the tubing, so that there is no significant risk that contaminants will enter the tubing during operation. In one class of preferred embodiments particularly well suited for heating ultrapure water, the inert tubing is a quartz coil. Lamps are mounted inside the coil generally parallel to the coil axis. Reflective material is wrapped around the outer surface of the coil to reflect radiation that has passed through the coil back toward the coil axis. The quartz comprising the coil is selected to transmit the lamp radiation efficiently to the fluid within the coil. In one embodiment, the lamps are mounted between a pair of end plate assemblies. Unheated process fluid flowing through chemically inert tubing which lines a spiral duct within each end plate assembly absorbs heat from the lamp ends, thereby preventing the lamps from overheating, before entering an inlet in the quartz coil.