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:
Feb. 03, 2009
Filed:
Mar. 02, 2006
Leonard Borgström, Tyresö, SE;
Lasse Hurnasti, Huddinge, SE;
Leonard Borgström, Tyresö, SE;
Lasse Hurnasti, Huddinge, SE;
Alfa Laval Corporate AB, Lund, SE;
Abstract
The invention refers to a centrifugal separator and a method of separating a product to a heavy phase and light phase. A centrifuge rotor encloses a closed separation space, which has a radially outer part for the heavy phase, a radially inner part for the light phase and a central gas-filled space. The radially outer part is separated from the radially inner part by a interface layer level. An inlet extends into the separation space for feeding the product. A first outlet extend from the radially outer part for discharge of the heavy phase. A second outlet extends from the radially inner part for discharge of the light phase. A control equipment permits control of the interface layer level to a desired radial position. A sensor senses a parameter related to the gas pressure in the central space. The control equipment controls the counter pressure in the first outlet in response to the sensed parameter for controlling the interface layer level to the desired radial position.