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US 5,215,724 AGranted
Sintered composite filter
AssigneeSchwabische Huttenwerke GmbH
InventorHans A. Haerle
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AssigneeSchwabische Huttenwerke GmbH
InventorHans A. Haerle
Estimating the term…
A filter for removing impurities from waste gases, and especially from the waste gases of an internal combustion engine, includes a filter body consisting of a plurality of compression moulded, high temperature resistant, sintered filter plates consisting of metal powder, metal chips, metallic fibres or a mixture of these materials, which are arranged on top of or behind one another and kept at a distance from one another by spacers, to form between them a plurality of flow channels. The flow channels are open at one end and closed at the other end in order to form inlet and outlet channels. The walls of the filter plate situated between the inlet and outlet channels constitute filter surfaces. The filter plates are formed by filter discs lying on top of one another, arranged in a filter housing and having a free or open central interior space, so that the waste gases flow radially through the filter discs from the outside towards the interior space or from the interior space towards the outside.
Filter for removing impurities from waste gases, such as the waste gases of an internal combustion engine, comprising a filter body including a plurality of compression molded, high temperature resistant, sintered filter plates having a high porosity structure comprising metal powder, metal chips, metallic fibers or a mixture thereof, which are arranged on top of or behind one another in a filter housing and spaced from one another by radially extending mating ribs and beads to thereby form between said plates a plurality of adjacent alternating radially disposed inlet and outlet flow channels defined by said ribs and beads, each of said inlet flow channels alternating with one of said outlet flow channels, the flow channels being open at one end and closed at the other end with surfaces of the filter plates situated between the inlet and outlet channels constituting filter surfaces for the passage of gas therethrough, and each of said filter plates having an open central interior space to allow the waste gases flowing through said filter body to pass in a substantially radial direction from the outside of said filter body through said flow channels towards the central interior space or in a substantially radial direction from the central interior space through said flow channels towards the outside of the filter body.
Filter for removing impurities from waste gases, such as the waste gases of an internal combustion engine, comprising a filter body including a plurality of compression molded, high temperature resistant, sintered filter plates having a high porosity structure comprising metal powder, metal chips, metallic fibers or a mixture thereof, which are arranged adjacent one another and having substantially radially extending rib means for forming and defining curved substantially radial flow channels between adjacent ones of said plates, each of said flow channels being open at one end and closed at the other end in order to form alternating inlet and outlet channels, with surfaces of the filter plates situated between the inlet and outlet channels constituting filter surfaces for the passage of gases therethrough, and each of said filter plates having an open central interior space to allow the waste gases flowing through said filter body to pass in a substantially radial direction from the outside of said filter body through said flow channels toward the central interior space or in a radial direction from the central interior space through said flow channels towards the outside of the filter body.
Dependencies are inferred from the claim text.