Pulse ring assembly for air cleaner systems and methods thereof

Patent metadata

Field	Value
Publication number	US-11731072-B2
Application number	US-201916962097-A
Country	US
Kind code	B2
Filing date	Jan 16, 2019
Priority date	Jan 16, 2018
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

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 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, wherein the outer tube comprises a pulse port extending between the interior and exterior surfaces into the outer tube passageway;
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 to an engine proximate the inner engine intake end; and
a pulse jet apparatus in fluid communication with the pulse port of the outer tube, wherein the pulse jet apparatus is configured to direct gas through the pulse port towards the first filter cartridge.

2. The air cleaner system of claim 1 , further comprising a housing extending around the exterior surface of the outer tube, 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 an additional pulse port positioned between the first and second filter cartridges 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 to the engine proximate the inner engine intake end,
wherein the pulse jet apparatus is in fluid communication with the additional pulse port, wherein the pulse jet apparatus is configured to direct gas through the additional pulse port.

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

4. The air cleaner system of claim 2 , wherein the pulse jet apparatus is configured to be selectively activated such that the gas is directed in discrete pulses through the additional pulse port.

5. 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 from the pulse port of the outer tube towards the outer filter outlet end.

6. The air cleaner system of claim 1 , wherein the pulse port is positioned along the outer tube at a location between the inner filter outlet end and the outer engine intake end.

7. The air cleaner system of claim 1 , 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.

8. The air cleaner system of claim 1 , wherein the interior surface of the outer tube defines a first diameter proximate the outer filter outlet end and a second diameter proximate the outer engine intake end, wherein the first and second diameters are different.

9. The air cleaner system of claim 1 , further comprising a controller operably connected to the pulse jet apparatus, wherein the controller is configured to selectively activate the pulse jet apparatus.

10. A method of retrofitting a pulse ring assembly between an air filter outlet of an air cleaner system and an engine intake, the method comprising:
connecting an outer tube to the air filter outlet, wherein the outer tube extends between an outer filter outlet end connected to the air filter outlet and an outer engine intake end, 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, wherein the outer tube comprises a pulse port extending between the interior and exterior surfaces into the outer tube passageway;
positioning an inner tube within the outer tube passageway, wherein the inner tube extends 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 inner filter outlet end is positioned within the outer tube passageway such that an outer pulse portion of the interior surface of the outer tube faces the exterior surface of the inner tube, wherein filtered air is configured to flow from the air filter outlet to the engine intake;
connecting the inner engine intake end to the engine intake; and
connecting a pulse jet apparatus in fluid communication with the pulse port of the outer tube, wherein the pulse jet apparatus is configured to direct gas from the pulse port of the outer tube towards the outer filter outlet end.

11. The method of claim 10 , further comprising selectively activating the pulse jet apparatus.

12. The method of claim 10 , wherein the method further comprises providing a seal between the interior surface of the outer tube and the exterior surface of the inner tube, wherein the pulse port is positioned closer to the seal than the inner filter outlet end.

13. The method of claim 10 , 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.

14. The method of claim 10 , wherein the interior surface of the outer tube defines a first diameter proximate the outer filter outlet end and a second diameter proximate the outer engine intake end, wherein the first and second diameters are different.

15. A pulse ring retrofit apparatus for an air cleaner system connected between an air filter outlet and an engine intake, the retrofit apparatus comprising:
an outer tube extending between an outer filter outlet end and an outer engine intake end, wherein the outer filter outlet end is connected to the air filter outlet, 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, wherein the outer tube comprises a pulse port extending between the interior and exterior surfaces into the outer tube passageway;
an inner tube extending along a longitudinal axis between an inner filter outlet end and an inner engine intake end, wherein the inner engine intake end is connected to the engine intake, 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 engine intake end is configured to receive the inner filter outlet end within the outer tube passageway such that an outer pulse portion of the interior surface of the outer tube face

Assignees

• Donaldson Co Inc

Inventors

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

Classifications

• B01D46/24 Primary

  Particle separators, e.g. dust precipitators, using rigid hollow filter bodies · CPC title

• B01D46/64

  arranged concentrically or coaxially · CPC title

• B01D46/71 Primary

  with pressurised gas, e.g. pulsed air · CPC title

• F02M35/10144

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

• B01D46/446

  by pressure measuring · CPC title