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:
Aug. 10, 1999
Filed:
Sep. 02, 1997
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An apparatus for detecting refrigerant leak in a refrigerating apparatus using refrigerant and a heat pump type refrigerating apparatus at low cost is presented. A refrigerant leak is judged from the differential temperature and the running time, by comprising a refrigeration system including a compressor, an evaporator, an expansion device, and a condenser, being sequentially coupled annularly by a conduit, a first temperature detector for detecting the air temperature of suction port of the evaporator, a second temperature detector for detecting the refrigerant temperature at the middle part of the evaporator, a differential temperature detector for calculating the differential temperature of the detectors, and a running time detector for storing the cumulative running time of the compressor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile