Multi-modal multi-media air filtration system

Patent metadata

Field	Value
Publication number	US-2019282944-A1
Application number	US-201816135544-A
Country	US
Kind code	A1
Filing date	Sep 19, 2018
Priority date	Mar 13, 2018
Publication date	Sep 19, 2019
Grant date	—

Abstract

A multi-modal multi-media air filtration system which can include: a base having one or more connection features and a filter media assembly, the filter media assembly being configured to attach to the base portion at a first end. The filter media assembly can then also include a first filter media extending across a first air flow path and a second filter media extending across a second air flow path. The air filtration assembly can then also include an actuation assembly configured to selectively open or close one of the first air flow path or the second air flow path so as to alternate the degree of filtration passing through the filter media assembly based on the degree of filtration provided by the first or second filter media.

First claim

We claim:

1 . A multi-modal multi-media air filtration system, the system comprising:
a base having one or more connection features; a filter media assembly, the filter media assembly being configured to attach to the base portion at a first end, the filter media assembly further comprising:
a first filter media extending across a first air flow path, the first air flow path extending through a first sidewall portion of the filter media assembly;
a second filter media extending across a second air flow path, the second air flow path extending through a second sidewall portion of the filter media assembly; and
an actuation assembly configured to selectively open or close one of the first air flow path or the second air flow path by moving a movable blocking mechanism.

2 . The multi-modal multi-media air filtration system of claim 1 , wherein the filter media assembly further comprises one or more flow path apertures provided about a second end.

3 . The multi-modal multi-media air filtration system of claim 2 , wherein the actuation assembly further comprises a movable blocking mechanism being configured to selectively open or close the one or more flow path apertures.

4 . The multi-modal multi-media air filtration system of claim 3 , wherein the blocking mechanism is provided as a rotatable disc provided with one or more corresponding apertures wherein rotation of the rotatable disc selectively opens or closes the one or more flow path apertures.

5 . The multi-modal multi-media air filtration system of claim 3 , wherein the blocking mechanism is configured to translate axially so as to open or close the one or more flow path apertures.

6 . The multi-modal multi-media air filtration system of claim 1 , wherein the first filter media defines an internal cavity, and wherein the second filter media is provided within the internal cavity.

7 . The multi-modal multi-media air filtration system of claim 1 , wherein the second filter media is provided having a generally conical shape.

8 . The multi-modal multi-media air filtration system of claim 1 , wherein the multi-modal multi-media air filtration system is operable in a first mode defined by a state wherein air is received from an ambient area and into an interior portion of the filter media assembly through only the first filter media, and wherein the multi-modal multi-media air filtration system is operable in a second mode wherein air is received through both the first filter media and through the second filter media.

9 . The multi-modal multi-media air filtration system of claim 8 , wherein the second filter media has a lower air flow resistance than the first filter media.

10 . The multi-modal multi-media air filtration system of claim 3 , wherein the movable blocking mechanism is provided about an exterior end surface of the second end of the second filter media.

11 . The multi-modal multi-media air filtration system of claim 1 , wherein the second filter media has a lower resistance than the first filter media.

12 . A method for filtering air intake in a vehicle, the method comprising:
selectively directing air through a specified air flow path in a multi-modal multi-media air filtration system, wherein the multi-modal multi-media air filtration system is comprised of:
a base having one or more connection features;
a filter media assembly, the filter media assembly being configured to attach to the base portion at a first end, the filter media assembly further comprising:
a first filter media extending across a first air flow path, the first air flow path extending through a first sidewall portion of the filter media assembly;
a second filter media extending across a second air flow path, the second air flow path extending through a second sidewall portion of the filter media assembly; and

an actuation assembly disposed about the base configured to selectively open or close one of the first air flow path or the second air flow path by moving a movable blocking mechanism.

13 . The method for filtering air intake in a vehicle of claim 12 , wherein the first air flow path extends radially through the filter media assembly, and where the second air flow path extends axially through a second end of the filter media assembly.

14 . The method for filtering air intake in a vehicle of claim 12 , wherein the movable blocking mechanism is provided as a rotatable disc provided with one or more corresponding apertures wherein rotation of the rotatable disc selectively opens or closes the second flow path.

15 . The method for filtering air intake in a vehicle of claim 12 , wherein the movable blocking mechanism is configured to translate axially so as to open or close the second flow path.

16 . The method for filtering air intake in a vehicle of claim 12 , wherein the first filter media defines an internal cavity, and wherein the second filter media is provided within the internal cavity.

17 . The method for filtering air intake in a vehicle of claim 16 , wherein the second filter media is provided having a generally conical shape.

18 . The method for filtering air intake in a vehicle of claim 12 , further comprising:
receiving air from an ambient area into an interior portion of the filter media assembly through only the first filter media thus defining a first mode; and alternating to a second mode, the second mode being defined by receiving air through both the first filter media and through the second filter media.

19 . The method for filtering air intake in a vehicle of claim 18 , wherein the second filter media has a lower air flow resistance than the first filter media.

20 . The method for filtering air intake in a vehicle of claim 12 , further comprising providing the movable blocking mechanism about an exterior end surface of the second end of the second filter media.

21 . The method for filtering air intake in a vehicle of claim 12 , further comprising:
receiving from a user input with regards to alternate between a first operation mode and a second operation mode before selectively directing air through a specified air flow path.

22 . The method for filtering air intake in a vehicle of claim 12 , further comprising:
receiving an automatically generated command to alternate between the first operation mode and the second operation mode, the automatically generated command being based on one or more sensed parameters.

23 . A multi-modal multi-media air filtration system, the system comprising:
a filter media assembly, the filter media assembly further comprising:
a first filter media extending across a first air flow path, the first air flow path extending through a radial sidewall of the filter media assembly;
a second filter media extending across a second air flow path, the second air flow path extending through a second end of the filter media assembly, wherein the first filter media defines an internal cavity, and wherein the second filter media is provided within the internal cavity;
an actuation assembly configured to selectively open or close one of the first air flow path or the second air flow path; a rotatable disc provided with one or more corresponding apertures wherein rotation of the rotatable disc selectively opens or closes the one or more flow path apertures, the rotatable disc being provided about an exterior end surface of the second end of the second filter media; wherein the filter media assembly further comprises one or

Assignees

• Mann & Hummel Gmbh

Inventors

• Loehl Thomas
• Koronai Anja
• Reyes Rodrigo
• Lehmann Martin
• Davis Tina
• Currin Matthew

Classifications

• B01D2279/60

  for the intake of internal combustion engines or turbines · CPC title

• B01D2275/201

  Conical shape · CPC title

• B01D46/0087 Primary

  Bypass or safety valves · CPC title

• B01D46/2403

  characterised by the physical shape or structure of the filtering element · CPC title

• B01D46/446

  by pressure measuring · CPC title