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. 22, 1985
Filed:
Jul. 02, 1984
John A Nelson, Benton Township, Berrien County, MI (US);
Joan D Banks, Oronoko Township, Berrien County, MI (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
An improved corrosion-inhibiting system for use in heat pipes operating at relatively high temperatures, such as 300.degree. F. to 500.degree. F. In the illustrated embodiment, a corrosion inhibitor aqueous solution is provided having approximately 1% to 5% by weight sodium chromate. Glass which goes into solution into the sodium chromate at temperature of approximately 300.degree. F. and above is included in the system. The solution of the glass in the sodium chromate solution permits the glass to be carried to the condenser portion of the heat pipe in small solution droplets which are transported by the vaporized fluid so as to be adsorbed in the protective layer on the inner surface of the heat pipe tube. Glass dissolved in the boiling liquid solution is adsorbed on the wall surface in the evaporator portion of the heat pipe. Pyrex glass has been found to provide excellent results in the system.