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:
May. 31, 2011
Filed:
Dec. 27, 2007
Hajime Sato, Aichi, JP;
Taichi Tateishi, Aichi, JP;
Yoshiyuki Kimata, Aichi, JP;
Yoshiaki Miyamoto, Aichi, JP;
Yogo Takasu, Aichi, JP;
Hajime Sato, Aichi, JP;
Taichi Tateishi, Aichi, JP;
Yoshiyuki Kimata, Aichi, JP;
Yoshiaki Miyamoto, Aichi, JP;
Yogo Takasu, Aichi, JP;
Mitsubushi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A scroll compressor performing three-dimensional compressions, which can optimize a tip clearance in operation while considering a thermal expansion and a pressure deformation and which can reduce a compression leakage to improve a compression efficiency thereby to realize a high performance. The leading end faces (and) and the bottom face of a spiral wrap () have a step portion (), and the wrap height on the outer circumference side of the spiral wrap () is made larger than that on the inner circumference side wrap height. The spiral wrap () on the inner circumference side with respect to the step portion () is stepwise or continuously made gradually lower toward the center side of the spiral wrap (), and the tip clearance (Δi) of the spiral wrap on the inner circumference side with respect to the step portion () is made gradually larger toward the center side of the spiral wrap ().