Filter elements, air filter arrangements; and methods

Patent metadata

Field	Value
Publication number	US-9610529-B2
Application number	US-201414297738-A
Country	US
Kind code	B2
Filing date	Jun 6, 2014
Priority date	Feb 4, 2005
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

Filter elements are described. In an example embodiment, the filter element has a support framework and media defining a closed end and an open end. A non-circular radial seal is depicted, in an example. Variations for particular applications are described.

First claim

What is claimed:

1. An air filter element comprising:
(a) an open filter interior having a first, closed, end and an open end opposite the first, closed, end; the open end having an air flow aperture therethrough;
(b) filter media; and,
(c) a portion having a non-circular sealing surface for sealing engagement with an air flow duct in use; the sealing surface being positioned on the open end of the filter element at a location surrounding the air flow aperture;
(i) the sealing surface, having the non-circular shape, comprising at least three, spaced, lobes with non-straight surface sections extending therebetween; and,
(ii) the sealing surface being configured and directed to form a radial seal with an air flow duct, in use.

2. An air filter element according to claim 1 wherein:
(a) the element includes, at the open end, a portion having a sealing surface configured to form a second seal.

3. An air filter element according to claim 2 wherein:
(a) the portion having a second sealing surface, configured to form a second seal, is configured as a second sealing surface having at least three, spaced, lobes, with non-straight sections extending therebetween.

4. An air filter element according to claim 3 wherein:
(a) the portion configured to form a second sealing surface is configured to form an axial seal.

5. An air filter element according to claim 1 wherein:
(a) the media includes one or more layers of fine fiber thereon.

6. An air filter element according to claim 1 wherein:
(a) the open end includes a circular member thereon surrounding the sealing surface having a non-circular shape.

7. An air filter element according to claim 1 including:
(a) a support structure comprising plastic and extending from the open end to the closed end.

8. An air filter element according to claim 7 wherein:
(a) the support structure comprises hard plastic with soft polymer material molded thereto.

9. An air filter element according to claim 1 wherein:
(a) the media comprises non-woven fiber material.

10. An air filter cartridge according to claim 1 wherein:
(a) the media is pleated.

11. An air filter element according to claim 1 wherein:
(a) the filter element is a non-cylindrical element.

12. An air filter element according to claim 1 wherein:
(a) the filter element has no rounded surfaces that provide filtration.

13. An air filter element according to claim 1 wherein:
(a) the sealing surface is configured to form a radially inwardly directed sealing engagement with a duct.

14. An air filter element according to claim 1 including:
(a) a band clamp positioned to bias the sealing surface against an air flow duct.

15. An air filter element according to claim 1 wherein:
(a) the media comprises a non-woven fiber material; and,
(b) the media is pleated.

16. An air filter element according to claim 15 wherein:
(a) the media includes one or more layers of fine fiber thereon.

17. An air filter element according to claim 15 including:
(a) a second sealing surface configured to form a second seal.

18. An air filter arrangement comprising:
(a) a housing; and,
(b) a filter element; the filter element comprising:
(i) an open filter interior having a first, closed, end and an open end opposite the first, closed, end; the open end having an air flow aperture therethrough;
(ii) filter media; and,
(iii) a portion having a non-circular sealing surface for sealing engagement with an air flow duct in use; the sealing surface being positioned on the open end of the filter element at a location surrounding the air flow aperture;
(A) the sealing surface, having the non-circular shape, comprising at least three, spaced, lobes with non-straight surface sections extending therebetween; and,
(B) the sealing surface being configured and directed to form a radial seal with an air flow duct, in use.

19. An air filter arrangement according to claim 18 wherein:
(a) the housing completely encloses the filter element.

20. An air filter arrangement according to claim 18 including:
(a) a band clamp biasing the sealing surface against an air flow duct.

Assignees

• Donaldson Co Inc

Inventors

• Mills Jarren B
• Adamek Daniel
• Dejong Richard

Classifications

• B01D2271/027

  Radial sealings · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D2275/10

  Multiple layers · CPC title

• B01D46/0036 Primary

  by adsorption or absorption · CPC title

• B01D46/10

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