Browse Prior Art Database

Filter Holder, Filter Element and Filter Arrangement

IP.com Disclosure Number: IPCOM000246462D
Publication Date: 2016-Jun-09
Document File: 63 page(s) / 4M

Publishing Venue

The IP.com Prior Art Database

Abstract

A filter holder (2) for a filter element (3) that has an oval-shaped cross section transverse to a longitudinal direction (LR) thereof, with a receiving section (19) for receiving the filter element (3), a fluid inlet (24) for allowing fluid (L) to be filtered into the filter holder (2), and a fluid outlet (25) for letting the fluid (L) filtered with the aid of the filter element (3) out of the filter holder (2), wherein the fluid inlet (24) is arranged such that an inflow direction (E) of the fluid (L) to be filtered is oriented in the direction of a lateral surface (29) of the filter element (3) that can be received in the receiving section (19), whereby the fluid (L) to be filtered flows tangentially around the filter element (3) that can be received in the receiving section (19) in order to separate particles (33) contained in the fluid (L) to be filtered on a wall (30) of the receiving section (19) with the aid of centrifugal force.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 5% of the total text.

Page 01 of 63

1/30


Filter Holder, Filter Element and Filter Arrangement

Prior Art

  Known air filters for motor vehicles can have an annularly closed, radially folded filter medium that can be wound onto a center pipe, for example. Particularly in the area of agricultural com- mercial vehicles and construction vehicles, the filter medium can become clogged or damaged 5

due to the heavy dust load. This can reduce the service life and the filtration efficiency of the air filter.

   WO 2009/106591 A2 describes an air filter with a pre-separator. With the aid of the pre- separator, particles contained in the raw gas can be separated off by means of centrifugal force. An increase in the filtration efficiency can be achieved in this way, since the particles are re- 10

moved from the raw gas before reaching the air filter.

The Invention

Against this background, it is the object of the present invention to provide an improved filter holder for a filter element.

   Accordingly, a filter holder for a filter element is proposed that has an oval-shaped cross section 15

   transverse to a longitudinal direction. The filter holder comprises a receiving section for receiv- ing the filter element, a fluid inlet for allowing fluid to be filtered into the filter holder, and a fluid outlet for letting the fluid filtered with the aid of the filter element out of the filter holder, the fluid inlet being arranged such that an inflow direction of the fluid to be filtered is oriented in the direction of a lateral surface of the filter element that can be received in the receiving section 20

or along an inner wall of the receiving section, particularly substantially orthogonally to the lon- gitudinal direction, whereby the fluid to be filtered flows tangentially and/or helically, particular- ly in the manner of an oval-shaped helix, around the filter element in order to separate particles contained in the fluid to be filtered on a wall of the receiving section with the aid of centrifugal force.

   The filter holder can also be referred to as a housing or filter housing. Due to the fact that the inflow direction is oriented in the direction toward the filter element, the flow against the filter element is direct in comparison to known arrangements. Since the filter holder itself acts as a pre-separator, particularly as a centrifugal separator, additional pre-separators arranged upstream from the filter element can be omitted. This results in a cost advantage compared to known ar- 30

rangements. The particularly oval-shaped cross-sectional geometry of the receiving section leads to a favorable pre-separation efficiency of the particles in comparison to a circular cross-

25


Page 02 of 63

                    2/30
sectional geometry. Moreover, due to the oval-shaped cross-sectional geometry, narrow or rec- tangular installation spaces can also be used for receiving the filter holder with the same struc- tural volume. In particular, the filter holder is arranged such that a latitudinal direction of the rece...