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:
Sep. 08, 1987
Filed:
Dec. 05, 1985
Leo B Conner, Jr, Phoenix, AZ (US);
John M Conner, Mesa, AZ (US);
Other;
Abstract
A solar energy system in which a heat transferring liquid captures heat in solar collectors and stores it in a storage tank is disclosed. A pump moves heat transferring liquid from the storage tank to the collectors and into a drain-back module only when a predetermined activation temperature is achieved. The pump then inactivates allowing heat transferring liquid within the collectors to heat. When the pump initially inactivates, a siphon or draining cycle is formed which moves heat transferring liquid from the drain-back module to the storage tank. Gas within the storage tank replaces heat transferring liquid in the collectors through the drain-back module to achieve drain-back. However, the siphon or draining operation must first cause heat transferring liquid within the drain-back module to fall below a drain-back feed point. Thus, the solar energy system delays drain-back until after the siphon or draining operation is completed.