Filter unit for air cleaning device, and air cleaning device

Patent metadata

Field	Value
Publication number	US-12274979-B2
Application number	US-202017762765-A
Country	US
Kind code	B2
Filing date	Nov 4, 2020
Priority date	Nov 19, 2019
Publication date	Apr 15, 2025
Grant date	Apr 15, 2025

Abstract

A filter unit for an air cleaning device includes an odor filter configured for odor neutralization and embodied as a device for plasma generation. The odor filter includes an air-permeable high-voltage electrode and an air-permeable counter electrode arranged behind one another in a direction of flow of air. Each of the air-permeable high-voltage electrode and the air-permeable counter electrode is formed by a panel element.

First claim

The invention claimed is:

1. A filter unit for an air cleaning device, said filter unit comprising:
an odor filter configured for odor neutralization and embodied as a device for plasma generation, said odor filter comprising an air-permeable high-voltage electrode and an air-permeable counter electrode arranged behind one another in a direction of flow of air, each of the air-permeable high-voltage electrode and the air-permeable counter electrode being formed by a panel element,
wherein the counter electrode has a uniform pattern of openings that are air-permeable,
the high-voltage electrode has a uniform pattern of openings that are air permeable, and
the openings of the high-voltage electrode are offset from the openings of the counter electrode.

2. The filter unit of claim 1 , further comprising an electrostatic filter which includes an ionization unit and a separation unit arranged downstream of the ionization unit in the direction of flow.

3. The filter unit of claim 2 , wherein the separation unit of the electrostatic filter includes a live collecting electrode and a grounded collecting electrode, with the live collecting electrode and the grounded collecting electrode being air-impermeable plates or the live collecting electrode and the grounded collecting electrode being air-permeable electrodes.

4. The filter unit of claim 2 , wherein the odor filter is arranged downstream of the electrostatic filter in the direction of flow.

5. The filter unit of claim 2 , wherein the odor filter and the electrostatic filter are contained in a shared housing.

6. The filter unit of claim 1 , wherein the air-permeable high-voltage electrode and the air-permeable counter electrode of the odor filter are arranged in an orientation which is inclined relative to the direction of flow.

7. The filter unit of claim 1 , wherein at least one of the air-permeable high-voltage electrode and the air-permeable counter electrode of the odor filter has a surface on which an insulation coating is provided.

8. The filter unit of claim 1 , wherein at least one of the high-voltage electrode and the counter electrode has a multilayered structure.

9. The filter unit of claim 1 , wherein at least one of the high-voltage electrode and the counter electrode is made of an air-permeable material or an air-impermeable material with at least one air conduction opening.

10. The filter unit of claim 1 , wherein at least one of the high-voltage electrode and the counter electrode is made of perforated plate, welded mesh, woven wire netting, expanded metal, sintered material and/or foamed material.

11. A filter unit for an air cleaning device, said filter unit comprising:
an odor filter configured for odor neutralization and embodied as a device for plasma generation, said odor filter comprising an air-permeable high-voltage electrode and an air-permeable counter electrode arranged behind one another in a direction of flow of air, each of the air-permeable high-voltage electrode and the air-permeable counter electrode being formed by a panel element,
wherein the high-voltage electrode and the counter electrode are arranged relative to each other in such a way that their structure is rotated about an axis in the plane of the respective one of the electrodes.

12. The filter unit of claim 1 , wherein the odor filter includes a high-voltage transformer configured to generate a temporally changing high voltage for the high-voltage electrode of the odor filter.

13. An air cleaning device, comprising a filter unit, said filter unit comprising:
an odor filter configured for odor neutralization and embodied as a device for plasma generation, said odor filter comprising an air-permeable high-voltage electrode and an air-permeable counter electrode arranged behind one another in a direction of flow of air, each of the air-permeable high-voltage electrode and the air-permeable counter electrode being formed by a panel element,
wherein the counter electrode has a uniform pattern of openings that are air-permeable,
the high-voltage electrode has a uniform pattern of openings that are air permeable, and
the openings of the high-voltage electrode are offset from the openings of the counter electrode.

14. The air cleaning device of claim 13 , wherein the air cleaning device is a vapor extraction device, said filter unit being arranged upstream of a fan of the vapor extraction device.

15. The air cleaning device of claim 13 , wherein the air-permeable high-voltage electrode and the air-permeable counter electrode of the odor filter are arranged in an orientation which is inclined relative to the direction of flow.

16. The air cleaning device of claim 13 , wherein at least one of the air-permeable high-voltage electrode and the air-permeable counter electrode of the odor filter has a surface on which an insulation coating is provided.

17. The air cleaning device of claim 13 , wherein at least one of the high-voltage electrode and the counter electrode has a multilayered structure.

18. The air cleaning device of claim 13 , wherein at least one of the high-voltage electrode and the counter electrode is made of an air-permeable material or an air-impermeable material with at least one air conduction opening.

19. The air cleaning device of claim 13 , wherein at least one of the high-voltage electrode and the counter electrode is made of perforated plate, welded mesh, woven wire netting, expanded metal, sintered material and/or foamed material.

20. The air cleaning device of claim 13 , wherein the high-voltage electrode and the counter electrode are arranged relative to each other in such a way that their structure is rotated about an axis in the plane of the respective one of the electrodes.

Assignees

• Bsh Hausgeraete Gmbh

Inventors

• Hepperle Georg
• Vollmar Daniel

Classifications

• B03C3/155

  Filtration · CPC title

• B03C3/12 Primary

  characterised by separation of ionising and collecting stations · CPC title

• B03C3/019

  Post-treatment of gases · CPC title

• B01D2259/818

  Employing electrical discharges or the generation of a plasma · CPC title

• A61L2209/14

  Filtering means · CPC title