Filter device
AssigneeKabushiki Kaisha Aiaishi
InventorsYasuyuki Muramatsu, Shoji Nakamichi, Yutaka Kondo, Toru Kubo
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Abstract
A filter device for cleaning water and having a reinforcing member for preventing reduction of filtering area due to deformation of filter membrane. The filter device comprises a generally cylindrical casing and a filter element contained in said casing for passing water from the primary side thereof to the secondary side thereof, the filter element including a corrugated filter membrane and a reinforcing member for supporting the corrugated filter membrane. The filter device is particularly suited for use together with a powdered absorbent such as activated carbon.
Claims11
A filter device for cleaning water and for use with a pre-coat layer of powdered absorbent, comprising:
- a generally cylindrical casing having an inner wall, an outer wall, and a bottom with a central portion defining a center, and
- a filter element contained in said casing for passing water from a primary side thereof to a secondary side thereof,
- said filter element including
- a corrugated filter membrane having an outer surface and an inner surface providing an inner contour, said corrugated filter membrane cooperating with and adhered to a powdered absorbent to form a pre-coat layer on the outer surface of said corrugated filter membrane at said primary side, and
- a reinforcing member for supporting said corrugated filter membrane, said reinforcing member being disposed internally of said corrugated filter membrane, said reinforcing member having an outer contour contacting closely with the inner contour of said corrugated filter membrane, and said reinforcing member defining multiple pores for allowing water to pass therethrough so that the shape of said corrugated filter membrane is retained even when the pressure of water passing therethrough is changed.
Dependencies are inferred from the claim text.