Title:
【発明の名称】連続動作濾過方法及び装置
Document Type and Number:
Japanese Patent JP2002525193
Kind Code:
A
Abstract:
The invention relates to a continuous-action filtering method, a filtering apparatus, as well as to the use of the discussed apparatus, as an automatic filter in the fuel or lubrication system of an engine. According to the invention, the apparatus comprises three filtering units, having a common inlet channel for a flow to be filtered, a common outlet channel for a filtered flow, as well as a common valve element provided with flow connections for controlling the flow in such a manner that the filtering units are in operation one at a time. An essential feature in the operation of the valve element is its ability to rotate around its axis and, furthermore, its ability to move between two different positions, the two filter units being operable alternately by rotating the valve element and the third filtering unit being operable by moving the valve. The valve element is constituted, e.g., by a cylindrical, axially movable spindle, which is also rotatable around its axis. In an automatic filter, the two filtering units can be used for a normal filtering process, wherein, with one of the units in operation at a given time, the other is subjected to a backflush, and the third unit is set in operation as said two units are being serviced.
Inventors:
Coivla, Tuomo
Application Number:
JP2000572003A
Publication Date:
August 13, 2002
Filing Date:
September 29, 1999
Export Citation:
Assignee:
Parker Hannifin Owai
International Classes:
F01M11/03; B01D29/11; B01D29/52; B01D29/60; B01D29/66; B01D35/02; B01D35/12; B01D36/02; B01D41/04; F02M37/22; F02M55/00; (IPC1-7): B01D29/60; B01D29/11; B01D29/66; B01D35/02; F01M11/03; F02M37/22; F02M55/00
Attorney, Agent or Firm:
Masao Okabe (10 outside)