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Title:
FILTER DEVICE AND FILTRATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/147223
Kind Code:
A1
Abstract:
The present invention is configured such that bubbles do not flow out of a tank with fluid during filtration and such that dust, etc. collected by filtration does not fall into the tank when a filter element is replaced. According to the present invention, a substantially cylindrical filter element is provided inside a bottomed, substantially cylindrical filter case that has a plurality of openings provided in a side surface thereof. Fluid is made to flow into a hollow part of the filter element from an inflow part that is provided between the filter element and a bottom surface of the filter case in the height direction. An inner cylinder that is provided inside a substantially cylindrical filter material has: a first region in which openings are formed substantially over the entire surface thereof; and a second region in which no openings are formed. The second region is provided below the first region to include a lower end of the inner cylinder.

Inventors:
KITAJIMA Nobuyuki (5-32-84 Sugita, Isogo-ku, Yokohama-sh, Kanagawa 33, 〒2350033, JP)
OKAMOTO Mitsunobu (5-32-84 Sugita, Isogo-ku, Yokohama-sh, Kanagawa 33, 〒2350033, JP)
Application Number:
JP2018/003798
Publication Date:
August 16, 2018
Filing Date:
February 05, 2018
Export Citation:
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Assignee:
YAMASHIN-FILTER CORP. (1-1-8, Sakuragi-cho Naka-ku, Yokohama-sh, Kanagawa 62, 〒2310062, JP)
International Classes:
B01D29/58; F15B21/04
Domestic Patent References:
WO2016204118A12016-12-22
Foreign References:
JP2008290004A2008-12-04
JPH04137711U1992-12-22
JP4989832B22012-08-01
US4133763A1979-01-09
US20080197060A12008-08-21
JP2008290004A2008-12-04
Attorney, Agent or Firm:
SAKATA Yukari (Shin Yokohama WISE NEXT 3F, 5-14 Shin-Yokohama 2-chome, Kohoku-ku, Yokohama-sh, Kanagawa 33, 〒2220033, JP)
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