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:
Jul. 07, 1981
Filed:
Oct. 18, 1978
Arthur Perez, Niles, MI (US);
Fayez F Abraham, Niles, MI (US);
Tyler Refrigeration Corporation, Niles, MI (US);
Abstract
A gas defrost system comprising a heat exchange assembly located in close physical proximity with a branch conduit from the compressor discharge; the branch conduit leads, through a gas manifold, to the several remote evaporators comprising the refrigeration system. Liquid refrigerant is supplied to the heat exchanger from the liquid manifold and evaporated refrigerant is returned from the heat exchanger to the suction manifold. Refrigerant flow through the heat exchanger is controlled by an externally equalized expansion valve which has sensors connected to measure the compressor discharge pressure and the defrost gas temperature downstream of the heat exchange section. The expansion valve can be preset to maintain a desired amount of heat exchange so that the temperature of the defrost gas in the manifold will be maintained at or above a predetermined lower limit.