Feathered baffle filter

Patent metadata

Field	Value
Publication number	US-11446597-B2
Application number	US-202016950958-A
Country	US
Kind code	B2
Filing date	Nov 18, 2020
Priority date	Nov 18, 2020
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A filter for an exhaust hood includes: a frame extending in a first direction and a second direction; a first baffle located in the frame, the first baffle extending in the first direction and having two edges that extend in the first direction, a first edge of the two edges of the first baffle having a first undulating shape, a second edge of the two edges of the first baffle having a second undulating shape; and a second baffle located in the frame, the second baffle extending in the first direction and having two edges that extend in the first direction, a first edge of the two edges of the second baffle having a third undulating shape, a second edge of the two edges of the second baffle having a fourth undulating shape. The first baffle and the second baffle are separated by a gap.

First claim

What is claimed is:

1. A filter for an exhaust hood, the filter comprising: a frame extending in a first direction and a second direction, the second direction being perpendicular to the first direction; a plurality of first baffles located in the frame, each first baffle extending in the first direction and having two edges that extend in the first direction, a first edge of the two edges of the first baffle having a first undulating shape, a second edge of the two edges of the first baffle having a second undulating shape; and a plurality of second baffles located in the frame, each second baffle extending in the first direction and having two edges that extend in the first direction, a first edge of the two edges of the second baffle having a third undulating shape, a second edge of the two edges of the second baffle having a fourth undulating shape, wherein the first baffle and the second baffle are separated in the second direction by a gap; wherein the first baffle has a central portion, a first extension extending from the central portion, and a second extension extending from the central portion, the first extension forms a first included angle with the central portion, the first included angle being greater than 90 degrees, and the second extension forms a second included angle with the central portion, the second included angle being greater than 90 degrees.

2. The filter of claim 1 , wherein the gap extends in a third direction an entire depth of the filter in the third direction, and
the third direction is perpendicular to the first direction and perpendicular to the second direction.

3. The filter of claim 1 , wherein the first undulating shape and the second undulating shape are scalloped shapes.

4. The filter of claim 1 , wherein the first undulating shape forms a repeating curve for an entire length of the first edge, and
the second undulating shape forms a repeating curve for an entire length of the second edge.

5. The filter of claim 1 , wherein the first edge of the first baffle and the second edge of the first baffle are mirror images of each other.

6. The filter of claim 5 , wherein the first undulating shape and the third undulating shape are a same shape.

7. The filter of claim 1 , wherein the first included angle and the second included angle are equal.

8. The filter of claim 7 , wherein the first included angle is between 120 degrees and 150 degrees.

9. The filter of claim 8 , further comprising a third baffle and a fourth baffle,
wherein the first baffle, the second baffle, the third baffle, and the fourth baffle are identical, and
each of the baffles is separated from an adjacent one of the baffles by a respective gap that is equal to the gap between the first and second baffles.

10. The filter of claim 1 , wherein the first undulating shape includes at least five undulations.

11. An exhaust hood, comprising: a housing having a filter receptacle; and a removable filter located in the filter receptacle, the filter having: a frame extending in a first direction and a second direction, the second direction being perpendicular to the first direction, a plurality of first baffles located in the frame, each first baffle extending in the first direction and having two edges that extend in the first direction, a first edge of the two edges of the first baffle having a first undulating shape, a second edge of the two edges of the first baffle having a second undulating shape, and a plurality of second baffles located in the frame, each second baffle extending in the first direction and having two edges that extend in the first direction, a first edge of the two edges of the second baffle having a third undulating shape, a second edge of the two edges of the second baffle having a fourth undulating shape, wherein the first baffle and the second baffle are separated in the second direction by a gap; wherein the first baffle has a central portion, a first extension extending from the central portion, and a second extension extending from the central portion, the first extension forms a first included angle with the central portion, the first included angle being greater than 90 degrees, and the second extension forms a second included angle with the central portion, the second included angle being greater than 90 degrees.

12. The exhaust hood of claim 11 , further comprising an air mover that draws air through the filter.

13. The exhaust hood of claim 11 , wherein the gap extends in a third direction an entire depth of the filter in the third direction, and
the third direction is perpendicular to the first direction and perpendicular to the second direction.

14. The exhaust hood of claim 11 , wherein the first undulating shape forms a repeating curve for an entire length of the first edge, and
the second undulating shape forms a repeating curve for an entire length of the second edge.

15. The exhaust hood of claim 11 , wherein the first edge of the first baffle and the second edge of the first baffle are mirror images of each other.

16. The exhaust hood of claim 11 , wherein the first undulating shape and the third undulating shape are a same shape.

17. The exhaust hood of claim 11 , wherein the first included angle and the second included angle are equal, and
the first included angle is between 120 degrees and 150 degrees.

18. The exhaust hood of claim 17 , further comprising a third baffle and a fourth baffle,
wherein the first baffle, the second baffle, the third baffle, and the fourth baffle are identical, and
each of the baffles is separated from an adjacent one of the baffles by a respective gap that is equal to the gap between the first and second baffles.

Assignees

• Bsh Home Appliances Corp
• Bsh Hausgeraete Gmbh

Inventors

• Habib Mikhail
• Scott Sean
• Turner Derek

Classifications

• B01D45/08 Primary

  by impingement against baffle separators · CPC title

• B01D46/12 Primary

  in multiple arrangements · CPC title

• B01D46/0002

  Casings; Housings; Frame constructions · CPC title

• F24C15/2035 Primary

  Arrangement or mounting of filters (F24C15/2021 takes precedence; filters per se B01D46/00) · CPC title