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. 02, 2010
Filed:
Jun. 07, 2006
Satoshi Nakamura, Shizuoka, JP;
Mutsunori Matsunaga, Shizuoka, JP;
Shuji Hasegawa, Shizuoka, JP;
Kenji Tojo, Moriya, JP;
Satoshi Nakamura, Shizuoka, JP;
Mutsunori Matsunaga, Shizuoka, JP;
Shuji Hasegawa, Shizuoka, JP;
Kenji Tojo, Moriya, JP;
Hitachi Appliances, Inc., Tokyo, JP;
Abstract
A scroll back pressure chamber in a scroll compressor is composed of a spacefilled with suction pressure (or intermediate pressure) and a space filled with discharge pressure, and the summation of the suction pressure (or the intermediate pressure) and the discharge pressure presses one of scrolls against the other of the scrolls. An injection hole, through which refrigerant in gas state or refrigerant in liquid state is injected into a compression chamber of the scroll compressor, is provided on a fixed scroll, and the gas refrigerant injection or the liquid refrigerant injection is selected and carried out according to an operating pressure ratio.