Abstract:
PROBLEM TO BE SOLVED: To provide a compact filter element maintaining the flow rate of a fluid passing through a filter medium and suppressing the pressure loss as much as possible. SOLUTION: The filter element is equipped with the filter medium 30 folded into crest parts 30a and valley parts 30b arranged alternately, and a frame 21 for holding the medium. The frame 21 comprises a frame main body 22 constituting the periphery thereof, and a plurality of ribs 23 extending in parallel inside thereof. The space H between the ribs 23 is formed within the range of 5 to 35 mm, and the filter medium 30 is folded at the crest part 30a and the valley 30b, at an angle θ of at least 4 degrees. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A filter includes a cylindrical filter element having a longitudinal axis, first and second end surfaces, and a plurality of longitudinal pleats. Each of the pleats includes a leg which has a height greater than (D-d)/2, where d is the inner diameter and D is the outer diameter of the filter element. Adjacent legs of the pleats are in contact. First and second end elements are sealed to first and second ends of the filter element, and a retainer is disposed around the filter element.
Abstract:
A high efficiency air filter assembly (100) for high temperature applications comprising: a filter core (102) including a unitary sheet of air-permeable filter media folded in accordion fashion to form a plurality of side-by-side pleats with zig-zag edges on two opposite sides and flat panels on the other two sides, and a spacer member between opposing walls of successive pleats, a box-like metal frame (108) enclosing said filter core on four sides in air tight engagement to define an air flow opening extending between upstream and downstream sides of said assembly, wherein the zig-zag edges of the unitary sheet of air-permeable filter media are sealingly embedded in a solid inorganic sealant composition (118) in the frame, and wherein the unitary sheet of air-permeable filter media preferably consists of a binder-free glass or mineral fiber filter media. Use of the high efficiency air filter assembly in high temperature applications wherein the filter assembly is repeatedly or continuously heated to a temperature in the range of 200-500 °C.
Abstract:
The present invention relates to a method for manufacturing a pleated filter (1) obtained by pleating a filtering material and folding the pleated filtering material to form a cylindrical configuration, which method further comprises applying at least one layer of fibrous covering on the outer surface of ridges of the pleats, which fibrous covering comprising melt-blown fibres (3) of thermoplastic polymer, wherein the pleated filter (1) is arranged in parallel to the blowing head which blows the molten polymer forming fibres, whereas at the same time the filter (1) performs rotational movements and/or reciprocating motion, while the distance of the blowing head from the said outer surface of the filter (1) is selected so that the fibres blown from the blowing head at the time of contacting the pleat ridges are still in a plastic state. The application provides further a pleated filter containing a pleated filtering material folded to form preferably a cylindrical configuration, on the outer surface of which filter the covering layer manufactured according to the method of the invention is arranged.
Abstract:
Die vorliegende Erfindung betrifft ein Hydraulikfilterelement (1), insbesondere ein Ölfilterelement, mit einem zylindrischen Filterkörper (2) aus einem sternförmig gefalteten Filtermaterial (4) und mit einer zylindrischen Innenzarge (3), an der sich der Filterkörper (2) radial innen abstützt. Eine vereinfachte Herstellung des Hydraulikfilterelements (1) ergibt sich, wenn eine für das jeweilige Hydraulikmittel durchlässige, zylindrische Hülle (11) vorgesehen ist, die radial außen am Filterkörper (2) anliegt.
Abstract:
Die Erfindung betrifft einen Filter zur Filtrierung von Fluiden, insbesondere von Gasen, insbesondere von Ansaugluft, Kraftstoff, Harnstoff-Lösung oder Motoröl insbesondere einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs, oder Umgebungsluft zur Einleitung in Belüftungssysteme von Gebäuden oder Fahrzeugen, mit einem Filterelement (1) mit einem zickzackförmig gefalteten Filtermedium (106) mit einer Rohseite (105) und einer Reinseite. Auf der Rohseite (105) und/oder auf der Reinseite des Filtermediums (14; 106) ist eine Mehrzahl von länglichen Klebstoffabschnitten (122) entlang von mindestens zwei Klebstoffspuren (101) auf dem Filtermedium (106) angeordnet, die wenigstens abschnittsweise schräg oder senkrecht zu Faltkanten (F) verlaufen. Auf jeder Klebstoffspur (101) ist wenigstens ein Klebstoffabschnitt (122) und wenigstens eine Klebstoffunterbrechung (107) angeordnet. Die Klebstoffunterbrechungen (107) der unterschiedlichen Klebstoffspuren (101) sind in Richtung der Faltkanten (F) betrachtet zueinander versetzt angeordnet, derart, dass durch die Klebstoffunterbrechungen (107) in einem Mediumabschnitt (120), der sich zwischen zwei benachbarten Faltkanten (F) erstreckt, kein durchgängig parallel zu den Faltkanten (F) verlaufender Durchgang (126) realisiert ist.