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. 26, 1995
Filed:
Apr. 15, 1994
Jerry A Rood, Onalaska, WI (US);
Peter A Kotlarek, Onalaska, WI (US);
American Standard Inc., Piscataway, NJ (US);
Abstract
Protective apparatus in a scroll compressor, in the form of a valve assembly, is operative to prevent compressor damage from reverse direction rotation of the scroll compression mechanism or the development of abnormally high discharge gas temperatures. The valve assembly is disposed in a passage communicating between the suction and discharge pressure portions of the compressor shell and houses a discharge temperature sensor immediately adjacent the location from which discharge gas issues from the compression mechanism. The location of the sensor and its exposure to discharge gas permits the timely sensing of abnormally high discharge temperatures and the shutdown of the compressor upon their occurrence. The valve assembly includes a vent valve which lifts, upon the reverse direction orbital motion of the orbiting scroll member and creation of a pressure less than suction pressure in the discharge pressure portion of the compressor, so as to provide an internal flow path and volume within the compressor against which the compression mechanism can pump where it would otherwise be damaged in pumping against a closed volume.