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Liquid Purification

Candle-filter-element

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Candle filter element

Details

Inventors: Mueller, Patrick; Schumacher, Ivo;
Assignee: DRM, Dr. Mueller AG (Maennedorf, CH)
Primary Examiner: Popovics; Robert James
Assistant Examiner:
Attorney, Agent or Firm: Striker; Michael J.

The multiple-tube filter proposed consists of at least one perforated filter element (15) whose outside surface has grooves (2) in a spiral round it, the surface between the grooves (2) preferably curving outwards in a circular arc.

DETAILED DESCRIPTION What is claimed is: 1.
A candle filter element for assembly in a pressurized container, the candle filter element comprising a support body disposed around a central tube and formed as a sheath element, so as to form a single hollow chamber between the central tube and said support body of the filter element and having a closed surface with openings, over which dosed surface a filter cloth is stretched, said support body having a central axis, said closed surface of said support body extending parallel to said axis and having a six-lobed shape with each lobe formed by a semi-circle.
2.
A candle filter element as defined in claim 1, wherein said openings are formed as circles.
3.
A candle filter element as defined in claim 1, wherein said openings are formed as slits.
4.
A candle filter element as defined in claim 3, wherein said openings are formed as said slits forming an angle of less 100.
degree.
with an axis of said sheath element.
5.
A candle filter for assembly in a pressurized container, comprising a central tube having an axis: and a candle filter support body disposed around a central tube and formed as a sheath element so as to form a single hollow chamber between the central tube and said support body of the filter element and having a closed surface with openings, over which cloth surface a filter cloth is stretched, said support body having a central axis coinciding with said axis of said central tube, said surface of said support body extending parallel to said axes and having a six-lobed shape with each lobe formed by a semi-circle.
6.
A candle filter as defined in claim 5, wherein said removably arranged inside said sheath element.

Description:
The invention relates to a candle filter element for assembly in a pressurized container, consisting of a support body disposed around a central tube with a closed surface, over which a filter cloth is stretched, wherein the support body is formed as a multi-lobed sheath element.
A candle filter element of this type is known from EP-A 0066921

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