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:
Nov. 26, 2019
Filed:
Jul. 28, 2015
Mitsubishi Heavy Industries Thermal Systems, Ltd., Minato-ku, Tokyo, JP;
Abstract
The area of a back-pressure chamber is increased so that pressing force on a rotational scroll due to back pressure is enhanced to reduce leakage of refrigerant gas through a chip clearance, thereby achieving improved compression efficiency. A scroll compression mechanism configured to form a compression pocket between a fixed scroll and a rotational scrollfacing each other and including a thrust plateconfigured to support a thrust load of the rotational scroll, and a back-pressure supplying mechanismconfigured to supply part of compressed refrigerant gas to a back side of the thrust plateas back pressure are provided. The back-pressure supplying mechanismincludes a back-pressure chamberformed on a thrust surfacefacing the back side of the thrust plate, a back-pressure supplying paththrough which the compressed refrigerant gas is supplied to the back-pressure chamber, and an inner seal ringand an outer seal ringdisposed radially inside and outside, respectively, of the back-pressure chamber. The outer seal ringis provided to be pressed between an inner peripheral surfaceof a housingand an outer peripheral surfaceof the thrust plate