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. 19, 2013
Filed:
Aug. 18, 2010
Hirotaka Kameya, Rifu, JP;
Kazuaki Shiinoki, Yokohama, JP;
Natsuki Kawabata, Shizuoka, JP;
Hirokatsu Kohsokabe, Omitama, JP;
Hirotaka Kameya, Rifu, JP;
Kazuaki Shiinoki, Yokohama, JP;
Natsuki Kawabata, Shizuoka, JP;
Hirokatsu Kohsokabe, Omitama, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a water-injection type scroll air compressor whose pre-stopping operation time for drying can be reduced while enhancing compressor efficiency. The compressor bodyincludes a water supply linefor supplying water to a water feederconnected to an air suction line. The water supply lineis provided with a control valvethat can control a flow rate of the water. A controllerconducts driving control of the control valvein a 5×10to 40×10range of an injected-water volume ratio (more specifically, a volume ratio between an intake air flow rate and injected-water flow rate in the water feederof the suction line) and at the same time, in an injected-water volume ratio range of the compressor characterized so that an increase rate of overall adiabatic efficiency of the compressor per 1×10increase rate of the injected-water volume ratio stays less than 2% of an original or initial value.