Membrane filter with deaeration and method for the manufacture thereof
AssigneeNorit Proces Technologie Holding B.V.
InventorsLucas Johannes Cornelis Kouters, Marc Johannes Fleuren, Ingo Blume
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Abstract
The invention relates to a method for manufacturing a membrane filter, comprising the steps of: fixing a bundle of hydrophilic filter elements by at least a first end in a housing part to be called bottom element, such that the first end of the hydrophilic filter elements is open towards a first side of the housing part and the hydrophilic filter elements extend on the opposite side of the housing part; and subsequently providing for at least one watertight and air-permeable element, in particular a hydrophobic filter element.
Claims34
A method for manufacturing a membrane filter comprising:
- a hydrophilic filter part which comprises a bundle of hydrophilic elements which are each fixed by at least a first end in a bottom element, such that, during use, water passes the bottom element via said hydrophilic elements;
- the bundle of hydrophilic elements being wound into a coil shape, such that therein a hollow space is enclosed next to the bottom element;
- a hydrophobic filter part being watertight and air permeable formed as a portion of one or more of the hydrophilic elements to which is introduced a hydrophobing agent, such that air can pass said membrane filter via said hydrophobic filter part;
- the method comprising the steps of:
- fixing a bundle of hydrophilic filter elements by at least a first end in a housing part to be called bottom element, such that said first end of the hydrophilic filter elements is open towards a first side of said housing part and the hydrophilic filter elements extend on the opposite side of the housing part;
- and
- subsequently providing for at least one watertight and air-permeable element, in particular a hydrophobic filter element.
A membrane filter, comprising:
- a hydrophilic filter part which comprises a bundle of hydrophilic elements which are each fixed by at least a first end in a bottom element, such that, during use, water passes the bottom element via said hydrophilic elements;
- the bundle of hydrophilic elements being wound into a coil shape, such that therein a hollow space is enclosed next to the bottom element;
- and
- a hydrophobic filter part being watertight and air permeable formed as a portion of one or more of the hydrophilic elements to which is introduced a hydrophobing agent, such that air can pass said membrane filter via said hydrophobic filter part.
A membrane filter, comprising:
- a hydrophilic filter part comprising a bundle of hydrophilic elements being fixed by at least a first end in a bottom element, such that, during use, water passes the bottom element via the hydrophilic elements;
- the bundle of hydrophilic elements being wound into a coil shape, such that therein a hollow space is enclosed next to the bottom element;
- a housing enclosing the hydrophilic elements and being watertightly sealed around the bottom part to form a chamber and having a first water connection in a wall of the housing such that water can only flow from the first water connection to a side of the bottom element external to the chamber or vice versa via the hydrophilic filter part;
- and
- a water tight and air permeable hydrophobic filter part communicating with the chamber such that air can pass the membrane filter via the hydrophobic filter part.
Dependencies are inferred from the claim text.