Air filter and ventilation system comprising the air filter

Patent metadata

Field	Value
Publication number	US-11471815-B2
Application number	US-201916677658-A
Country	US
Kind code	B2
Filing date	Nov 7, 2019
Priority date	Nov 8, 2018
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

An air filter for a ventilation system of a motor vehicle may include a plate-shaped filter body of a folded filter material and at least one sealing strip secured to a lateral edge of the filter body. Adjacent folds of the filter body may be connected to one another via a seam, may follow one another in a longitudinal filter direction, and may extend in a transverse filter direction. The at least one sealing strip may have at least one removal opening penetrating the at least one sealing strip. At least one removal nozzle for removing air flowing through the air filter may be securable to the at least one removal opening.

First claim

The invention claimed is:

1. An air filter for a ventilation system of a motor vehicle, comprising:
a plate-shaped filter body of a folded filter material including a plurality of folds; and
at least one sealing strip secured to a lateral edge of the filter body;
wherein adjacent folds of the filter body are connected to one another via a seam, follow one another in a longitudinal filter direction, and extend in a transverse filter direction; and
wherein the at least one sealing strip has at least one removal opening penetrating the at least one sealing strip and to which at least one removal nozzle for removing air flowing through the air filter is securable.

2. The air filter according to claim 1 , wherein at least one of:
the at least one removal opening has at least one of a round cross section, an oval cross section, a cross-shaped cross section, and a polygonal cross section;
the at least one removal opening is structured as a cut in the at least one sealing strip; and
the at least one removal opening is configured as at least one of (i) a lateral cut which is open on one side and (ii) a lateral notch which is open on one side, in the at least one sealing strip.

3. The air filter according to claim 1 , wherein the at least one sealing strip is secured to a longitudinal lateral edge of the filter body extending parallel to the longitudinal filter direction, and wherein at least one of:
the at least one removal opening is disposed between two adjacent folds of the filter body, and a distance between the two adjacent folds and a distance between other adjacent folds of the filter body are one of (i) slightly different from one another and (ii) identical to one another;
the at least one removal opening is disposed between two adjacent folds of the filter body, and a height of the two adjacent folds and a height of the other folds of the filter body are one of (i) slightly different from one another and (ii) identical to one another; and
a short fold is arranged between two folds of the filter body, a height of the short fold is smaller than a height of the two folds adjacent thereto, and the at least one removal opening is secured between a seam of the short fold and a strip edge of the at least one sealing strip between the two folds adjacent to the short fold.

4. The air filter according to claim 1 , wherein at least one of:
the at least one removal opening is configured on a clean side of the air filter for removing air for at least one of (i) a reference measurement, (ii) a test measurement, and (iii) cooling of further elements of the motor vehicle; and
the at least one removal opening is configured on a raw side of the air filter for removing air for cooling further elements of the motor vehicle.

5. The air filter according to claim 1 , wherein the at least one removal nozzle is secured to the at least one removal opening, and wherein at least one of:
the at least one removal nozzle penetrates the at least one removal opening and is secured in a form-fitting manner to a wall of the at least one sealing strip enclosing the at least one removal opening via a plurality of gripping elements protruding from the at least one removal opening; and
the at least one removal nozzle does not penetrate the at least one removal opening and is secured via a substance-to-substance bond to a wall of the at least one sealing strip enclosing the at least one removal opening.

6. The air filter according to claim 5 , wherein the at least one removal nozzle includes a fin having one of an I-shape, a T-shape, a cross-shape, a V-shape, a U-shape, an O-shape, an L-shape, a C-shape, and an H-shape, the fin transitioning into a hollow region of the at least one removal nozzle such that the fin leads the hollow region and widens the at least one removal opening for the hollow region when securing the at least one removal nozzle to the at least one removal opening.

7. The air filter according to claim 1 , wherein the at least one removal opening is arranged in the at least one sealing strip asymmetrically to at least one of a longitudinal axis of the at least one sealing strip and a transverse axis of the at least one sealing strip.

8. The air filter according to claim 1 , wherein the at least one removal opening includes a plurality of removal openings having at least one of (i) shapes which differ from one another, and (ii) cross sectional surfaces which differ from one another.

9. The air filter according to claim 1 , wherein:
the at least one sealing strip is secured to a longitudinal lateral edge of the filter body extending parallel to the longitudinal filter direction;
the at least one removal opening is disposed between two adjacent folds of the plurality of folds; and
a distance between the two adjacent folds and a distance between other adjacent folds of the filter body are substantially identical to one another.

10. The air filter according to claim 1 , wherein:
the at least one sealing strip is secured to a longitudinal lateral edge of the filter body extending parallel to the longitudinal filter direction;
the at least one removal opening is disposed between two adjacent folds of the plurality of folds; and
a height of the two adjacent folds and a height of other folds of the plurality of folds are substantially identical to one another.

11. The air filter according to claim 1 , wherein:
the at least one removal nozzle is secured to the at least one removal opening; and
the at least one removal nozzle penetrates the at least one removal opening and is secured in a form-fitting manner to a wall of the at least one sealing strip enclosing the at least one removal opening via a plurality of gripping elements protruding from the at least one removal opening.

12. The air filter according to claim 1 , wherein:
the at least one removal nozzle is secured to the at least one removal opening; and
the at least one removal nozzle does not penetrate the at least one removal opening and is secured via a substance-to-substance bond to a wall of the at least one sealing strip enclosing the at least one removal opening.

13. A ventilation system for a motor vehicle, comprising an air filter and a housing, the air filter including:
a plate-shaped filter body of a folded filter material; and
at least one sealing strip secured to a lateral edge of the filter body;
wherein adjacent folds of the filter body are connected to one another via a seam, follow one another in a longitudinal filter direction, and extend in a transverse filter direction;
wherein the at least one sealing strip has at least one removal opening penetrating the at least one sealing strip and to which at least one removal nozzle for removing air flowing through the air filter is securable;
wherein the air filter is secured in a receiving space of the housing such that air is flowable through the air filter; and
wherein the at least one removal opening is coupled via the at least one removal nozzle to at least one air passage in the receiving space such that air is guidable out of the air filter via the at least one removal nozzle to the at least one air passage and out of the receiving space.

14. The ventilation system according to claim 13 , wherein at least one of:
the at least one removal nozzle is arranged in the receiving space and is coupled to the at least one air passage to guide air, and the at least one removal nozzle is secured to the at least one removal opening via insertion of the air filter into the receiving space; and
the at least one removal nozzle is secured to the at least one removal opening, a coupling nozzle is disposed in the receivi

Assignees

• Mahle Int Gmbh

Inventors

• Michael Markus
• Muhrer Florian
• Wolf Walter

Classifications

• B01D46/0086

  Filter condition indicators · CPC title

• B01D46/10

  Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces · CPC title

• B01D2273/18

  Testing of filters, filter elements, sealings · CPC title

• B01D2279/35

  for venting arrangements · CPC title

• B01D46/522 Primary

  with specific folds, e.g. having different lengths · CPC title