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:
Jun. 03, 1997
Filed:
Aug. 02, 1996
Kyoji Kawaguchi, Kanagawa-ken, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A system for controlling the operation of a turbo-type fluid machine driven by a variable speed prime mover, which enables the characteristics of the fluid machine to be improved so as to become favorable for actual use while allowing the prime mover to exhibit its capacity to the maximum even at an operating point other than the rated point. The operation control system includes a turbo-type fluid machine driven by a driving machine, and a device for detecting an operating head or operating pressure of the fluid machine. The operation control system further includes a device for arithmetically outputting a rotational speed which gives a preset characteristic of the fluid machine in corresponding relation to the operating head or operating pressure, and a device for changing the rotational speed of the driving machine in response to the output rotational speed, so that even when the operating head or operating pressure of the fluid machine changes, the rotational speed of the fluid machine is controlled so as to maintain the preset characteristic of the fluid machine.