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, 1993
Filed:
Apr. 09, 1992
Jerome D Powlas, Maple Grove, MN (US);
White Consoldiated Industries, Inc., Cleveland, OH (US);
Abstract
A vapor compression refrigeration system for cooling a cabinet having a thermostat for cycling the compressor off and on to maintain a predetermined temperature range in the cabinet includes a subcooling flow control valve at the inlet to the capillary tube restriction. The valve is operated by a sealed bellows containing a refrigerant so that the valve is responsive to the fluid entering the valve. The valve is calibrated so that only a subcooled liquid refrigerant can flow through the valve and if the entering refrigerant is above a predetermined level the valve will close to completely block all flow between the condenser and the evaporator, and the valve will stay in the closed position at all times when the compressor is not running.