Pulse ring assembly for air cleaner systems and methods thereof

Patent metadata

Field	Value
Publication number	US-12239934-B2
Application number	US-202318231012-A
Country	US
Kind code	B2
Filing date	Aug 7, 2023
Priority date	Jan 16, 2018
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A pulse ring assembly for air cleaner systems that is adapted to produce a pulse ring of gas to clean a filter element. The air cleaner system may include an outer tube and an inner tube configured to receive the inner tube such that at least a portion of an interior surface of the outer tube faces at least a portion of an exterior surface of the inner tube. The outer tube may include a pulse port extending between the interior and exterior surfaces of the outer tube into an outer tube passageway. Filtered air may be configured to flow from a first filter cartridge, through the outer and inner tubes, and to an engine intake. The system may also include a pulse jet apparatus in fluid communication with the pulse port of the outer tube and configured to direct gas through the pulse port towards the first filter cartridge.

First claim

What is claimed:

1. An air cleaner system comprising:
an outer tube extending between an outer filter outlet end and an outer engine intake end, wherein the outer engine intake end is operably connectable to an engine intake such that the outer tube and the engine intake are in fluid communication, wherein the outer tube comprises an interior surface and an exterior surface, wherein the interior surface of the outer tube defines an outer tube passageway through the outer tube between the outer filter outlet end and the outer engine intake end;
an inner tube extending along a longitudinal axis between an inner filter outlet end and an inner engine intake end, wherein the inner tube comprises an interior surface and an exterior surface, wherein the interior surface of the inner tube defines an inner tube passageway through the inner tube between the inner filter outlet end and the inner engine intake end, wherein the outer tube is configured to receive the inner filter outlet end within the outer tube passageway such that at least a portion of the interior surface of the outer tube faces at least a portion of the exterior surface of the inner tube proximate the inner filter outlet end, wherein filtered air is configured to flow from a first filter cartridge proximate the outer filter outlet end towards the engine intake proximate the inner engine intake end;
a housing extending around the exterior surface of the outer tube, wherein the outer tube and the inner tube each extend from the housing towards the engine intake, wherein the housing comprises a first filter cartridge in fluid communication with the inner tube passageway and a second filter cartridge surrounding the first filter cartridge, wherein the housing defines a pulse port positioned between the first and second filter cartridges outside of the outer tube passageway, and an inlet such that the first and second filter cartridges are positioned between the inlet and the inner tube passageway, wherein filtered air is configured to flow from the inlet towards the engine intake proximate the inner engine intake end; and
a pulse jet apparatus in fluid communication with the pulse port, wherein the pulse jet apparatus is configured to direct gas through the pulse port into a space between the first filter cartridge and the second filter cartridge.

2. The air cleaner system of claim 1 , wherein the pulse port defines an annular shape between the first and second filter cartridges.

3. The air cleaner system of claim 1 , wherein the pulse jet apparatus is configured to be selectively activated such that the gas is directed in discrete pulses through the pulse port.

4. The air cleaner system of claim 1 , further comprising a flow control element configured to control at least one of a velocity, a volume, and a pressure of the gas directed through the pulse port.

5. The air cleaner system as in claim 4 , wherein the flow control element comprises a valve.

6. The air cleaner system of claim 1 , wherein a gap between the first and second filter cartridges is configured to control a volumetric flow rate of the gas through the pulse port.

7. The air cleaner system of claim 1 , further comprising an additional pulse port extending between an interior surface and an exterior surface of the outer tube passageway, wherein the additional pulse port opens into an interior volume of the first filter cartridge.

8. The air cleaner system of claim 7 , wherein the interior surface of the outer tube is concentric with and spaced a selected gap distance from the exterior surface of the inner tube.

9. The air cleaner system of claim 7 , wherein the pulse jet apparatus is configured to selectively direct the gas through at least one of the pulse port and the additional pulse port.

10. The air cleaner system of claim 9 , further comprising a controller operably connected to the pulse jet apparatus, wherein the controller is configured to selectively activate the pulse jet apparatus.

11. The air cleaner system of claim 10 , wherein the controller is configured to activate the pulse jet apparatus in response to a predetermined pressure differential across the second filter cartridge.

12. The air cleaner system of claim 1 , wherein a pulse port opening is positioned at an intermediate location between a first end and a second end of the second filter cartridge.

13. An air cleaner system comprising:
an inner tube extending along a longitudinal axis between an inner first end and an inner engine intake end, wherein the inner tube comprises an interior surface and an exterior surface, wherein the interior surface of the inner tube defines an inner tube passageway through the inner tube between the inner first end and the inner engine intake end;
an outer tube comprising an interior surface and an exterior surface, wherein the interior surface of the outer tube defines an outer tube passageway through the outer tube, wherein the outer tube is configured to receive at least a portion of the inner tube within the outer tube passageway to define a pulse port between the interior surface of the outer tube and the exterior surface of the inner tube;
a housing containing a first filter cartridge in fluid communication with the inner tube passageway and a second filter cartridge surrounding the first filter cartridge, wherein the outer tube and the inner tube each extend away from the housing, wherein the pulse port is positioned between the first and second filter cartridges, wherein air is configured to flow into the housing through an inlet to the inner engine intake end of the inner tube after passing through the first and second filter cartridges; and
a pulse jet apparatus in fluid communication with the pulse port, wherein the pulse jet apparatus is configured to direct gas through the pulse port into a space between the first filter cartridge and the second filter cartridge.

14. The air cleaner system of claim 13 , wherein the pulse port defines an annular shape between the first and second filter cartridges.

15. The air cleaner system of claim 13 , further comprising a flow control element configured to control at least one of a velocity, a volume, and a pressure of the gas directed through the pulse port.

16. The air cleaner system of claim 15 , wherein the flow control element comprises a valve.

17. The air cleaner system of claim 13 , wherein the pulse jet apparatus is configured to be selectively activated such that the gas is directed in discrete pulses through the pulse port.

18. The air cleaner system of claim 13 , wherein the interior surface of the outer tube is concentric with the exterior surface of the inner tube.

19. The air cleaner system of claim 13 , wherein particulate disposed on an exterior surface of the second filter cartridge is blown off of the second filter cartridge when the gas is directed through the pulse port.

20. The air cleaner system of claim 1 , wherein the outer tube and the inner tube each extend into the housing.

Assignees

• Donaldson Co Inc

Inventors

• Olson Thomas R
• Wahlquist Fred H
• Mulder David W
• Levac Robert R
• Adamek Daniel E

Classifications

• B01D46/64

  arranged concentrically or coaxially · CPC title

• F02M35/10144

  Connections of intake ducts to each other or to another device · CPC title

• F02M35/086

  Dust removal by flushing, blasting, pulsating or aspirating flow, washing or the like; Mechanical dust removal, e.g. by using scrapers · CPC title

• F02M35/02416

  Fixing, mounting, supporting or arranging filter elements; Filter element cartridges · CPC title

• B01D2279/60

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