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. 10, 2009
Filed:
Jun. 09, 2004
Kiyoshi Sawai, Shiga, JP;
Noboru Iida, Shiga, JP;
Yoshiyuki Futagami, Shiga, JP;
Akira Hiwata, Kyoto, JP;
Teruyuki Akazawa, Shiga, JP;
Kiyoshi Sawai, Shiga, JP;
Noboru Iida, Shiga, JP;
Yoshiyuki Futagami, Shiga, JP;
Akira Hiwata, Kyoto, JP;
Teruyuki Akazawa, Shiga, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma-Shi, JP;
Abstract
A back pressure chamber () provided on a back surface of an orbiting scroll () is divided into an inner region () and an outer region () by an annular seal (). A diameter d of the annular seal () is set 0.5 times or more of a diameter D of an orbiting mirror plate (). With this, plus thrust force can be applied to the orbiting scroll () irrespective of magnitude of a discharge pressure Pd applied to the inner region (). Therefore, it is possible to push the orbiting scroll () against the fixed scroll () only by back pressure of discharge pressure. A set pressure Pm of the outer region () is reduced to a value close to a suction pressure Ps, a pressure adjusting mechanism () is swiftly opened after a scroll compressor is started. With this, lubricant oil is supplied from the outer region () to the suction space () without a time lag.