Filter device
First Claim
Patent Images
1. A filter device comprising:
- a filter housing and a filter element disposed in the filter housing, the filter element configured to be penetrated by a fuel flow in a radial direction from a raw end to a pure end of the filter element, anda water separator disposed at the pure end of the filter element, the water separator extending in an axial direction of the filter element and having a hydrophobic and an annular diaphragm through which fuel can flow from a radially outward to a radially inward direction relative to a longitudinal center axis of the filter element,a flow channel disposed axially between the filter element and the water separator and connecting the pure end of the filter element with a raw end of the water separator, the flow channel including a radially extending channel wall comprising a surface that causes a spirally and radially outward fuel flow relative to the longitudinal center axis at the raw end of the water separator when the fuel flows through the channel.
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Abstract
A filter device includes a filter housing and a filter element disposed in the filter housing. The filter element is configured to be penetrated by a fuel flow in a radial direction from a raw end to a pure end of the filter element. A water separator is disposed at the pure end of the filter element and extends in an axial direction of the filter element. The water separator has a hydrophobic and annular diaphragm through which fuel can flow from a radially outward to a radially inward direction.
14 Citations
18 Claims
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1. A filter device comprising:
- a filter housing and a filter element disposed in the filter housing, the filter element configured to be penetrated by a fuel flow in a radial direction from a raw end to a pure end of the filter element, and
a water separator disposed at the pure end of the filter element, the water separator extending in an axial direction of the filter element and having a hydrophobic and an annular diaphragm through which fuel can flow from a radially outward to a radially inward direction relative to a longitudinal center axis of the filter element, a flow channel disposed axially between the filter element and the water separator and connecting the pure end of the filter element with a raw end of the water separator, the flow channel including a radially extending channel wall comprising a surface that causes a spirally and radially outward fuel flow relative to the longitudinal center axis at the raw end of the water separator when the fuel flows through the channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13)
- a filter housing and a filter element disposed in the filter housing, the filter element configured to be penetrated by a fuel flow in a radial direction from a raw end to a pure end of the filter element, and
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12. A filter device, comprising:
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a filter housing and a filter element disposed in the filter housing, the filter element configured to be penetrated by a fuel flow in a radial direction from a raw end to a pure end of the filter element; a water separator disposed at the pure end of the filter element, the water separator extending in an axial direction of the filter element and having a hydrophobic and annular diaphragm through which fuel can flow from a radially outward to a radially inward direction relative to a longitudinal center axis of the filter element;
ana flow channel arranged axially between the filter element and the water separator, the flow channel connecting the pure end of the filter element with the hydrophobic diaphragm of the water separator, the flow channel including a radially extending channel wall having a surface that causes a spirally and radially outward fuel flow relative to the longitudinal center axis at a raw end of the water separator when the fuel flows through the channel.
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14. A filter device, comprising:
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a filter housing and a filter element disposed in the filter housing, the filter element defining a raw end and a pure end in the filter housing, wherein the filter element is configured to be penetrated by a fuel flow in a radial direction from the raw end to the pure end; a water separator disposed at the pure end of the filter element, the water separator defining a crude chamber and a water collection chamber downstream of the crude chamber; and a flow channel arranged axially between the filter element and the water separator, the flow channel fluidly connecting the pure end of the filter element to the crude chamber of the water separator, wherein the flow channel includes a radially extending channel wall configured to facilitate a spirally and radially outward fuel flow with respect to a longitudinal center axis to the crude chamber of the water separator; wherein the water separator includes a hydrophobic and annular diaphragm through which fuel can flow from a radially outward to a radially inward direction relative to the longitudinal center axis, and wherein the flow channel includes at least one rib element that provides a surface that causes the spirally and radially outward fuel flow when the fuel flows through the channel and causes the fuel to flow tangentially to the diaphragm at the crude chamber of the water separator. - View Dependent Claims (15, 16, 17)
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18. A filter device, comprising:
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a filter housing and a filter element disposed in the filter housing, the filter element configured to be penetrated by a fuel flow in a radial direction from a raw end to a pure end of the filter element; a water separator disposed at the pure end of the filter element, the water separator extending in an axial direction of the filter element and having a hydrophobic and annular diaphragm through which fuel can flow from a radially outward to a radially inward direction relative to a longitudinal center axis of the filter element;
ana flow channel arranged axially between the filter element and the water separator, the flow channel connecting the pure end of the filter element with the hydrophobic diaphragm of the water separator, the flow channel including a radially extending channel wall having a surface that causes a spirally and radially outward fuel flow relative to the longitudinal center axis at a raw end of the water separator when the fuel flows through the channel.
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Specification