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:
Apr. 27, 1982
Filed:
Oct. 27, 1980
John E Voorhees, Sidney, OH (US);
Hobart Corporation, Troy, OH (US);
Abstract
A heat exchanger is used in combination with a dishwasher of the type having a sump, a washing spray assembly, a circulating pump which pumps washing fluid from the sump through the washing spray assembly, a rinsing spray assembly, a source of fresh rinsing water which flows through the rinsing assembly, a booster heater for heating the rinsing water to a predetermined temperature and a drain line for draining excess washing solution from the sump. The heat recovery system includes a heat exchanger in which fresh rinsing water flows in heat exchange relation with the excess washing solution from the sump before the rinsing water reaches the booster heater. A rinse valve controlling the flow of rinsing water cooperates with a pump located on the drain line so that the rinsing water and the washing solution flow through the heat exchanger at only preselected times during the operating cycle of the dishwasher. The dishwasher includes a control which activates the pump and the rinse valve whenever articles within the dishwasher are in position to be sprayed with rinsing water.