Air intake system for a work vehicle with enhanced pre-cleaner serviceability

Patent metadata

Field	Value
Publication number	US-9909543-B2
Application number	US-201514945718-A
Country	US
Kind code	B2
Filing date	Nov 19, 2015
Priority date	Nov 19, 2015
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

An air intake system for a work vehicle may generally include an intake duct defining a passageway for directing air in a flow direction through the system. The duct may also include a pre-cleaner slot defined between inner and outer surfaces of the duct and a support ledge extending circumferentially around at least a portion of an inner perimeter of the duct. The system may also include a pre-cleaner configured to be installed within the intake duct by inserting the pre-cleaner through the pre-cleaner slot in a direction extending generally perpendicular to the flow direction. In addition, the air intake system may include a cover configured to be coupled to the intake duct such that the cover extends over the pre-cleaner slot when the pre-cleaner is installed within the intake duct.

First claim

What is claimed is:

1. An air intake system for a work vehicle, the air intake system comprising:
an intake duct including an inner surface and an outer surface, the inner surface defining a passageway for directing air in a flow direction through the air intake system, the intake duct including a pre-cleaner slot defined between the inner and outer surfaces, the intake duct further including a support ledge extending circumferentially around at least a portion of an inner perimeter of the intake duct;
a pre-cleaner including an upper wall, a lower wall and a plurality of pre-cleaner elements extending between the upper and lower walls, the pre-cleaner configured to be rotatably installed within the intake duct by inserting the pre-cleaner through the pre-cleaner slot in a direction extending generally perpendicular to the flow direction; and
a cover configured to be coupled to the intake duct such that the cover extends over the pre-cleaner slot when the pre-cleaner is installed within the intake duct,
wherein, when the pre-cleaner is installed within the intake duct, at least a portion of the lower wall is sealed against the support ledge.

2. The air intake system of claim 1 , further comprising a sealing member positioned on the support ledge, the sealing member configured to provide a sealed interface between the at least a portion of the lower wall and the support ledge.

3. The air intake system of claim 2 , wherein the sealing member is formed from a compressible material, wherein the compressible material is compressed between the lower wall and the support ledge when the pre-cleaner is installed within the intake duct.

4. The air intake system of claim 1 , wherein the pre-cleaner includes at least one tab extending outwardly from at least one of the lower wall or the upper wall, wherein the at least one tab is configured to be received within at least one locating groove defined along the inner perimeter of the intake duct.

5. The air intake system of claim 4 , wherein the at least one locating groove extends circumferentially along the inner perimeter of the intake duct between a first end and a second end, the second end being offset from the first end in the flow direction of the intake duct.

6. The air intake system of claim 5 , wherein, when the at least one tab is received within the at least one locating groove, the pre-cleaner is configured to be rotated relative to the intake duct such that the at least one tab is moved between the first and second ends of the at least one locating groove.

7. The air intake system of claim 1 , wherein the outer surface of the intake duct defines a recess adjacent to the pre-cleaner slot and wherein a portion of the cover is configured to be received within the recess when the cover is coupled to the intake duct.

8. The air intake system of claim 7 , further comprising a sealing member positioned within the recess so as to provide a sealed interface between the cover and the intake duct.

9. The air intake system of claim 1 , wherein the pre-cleaner includes a handle extending outwardly relative to at least one of the upper wall or the lower wall, the cover defining a cavity configured to receive the handle when the cover is installed over the pre-cleaner slot.

10. The air intake system of claim 1 , wherein the intake duct includes at least one retention member positioned adjacent to the pre-cleaner slot, the at least one retention member configured to engage at least one corresponding retention member of the cover when the cover is installed over the pre-cleaner slot.

11. An air intake system for a work vehicle, the air intake system comprising:
an intake duct including an inner surface and an outer surface, the inner surface defining a passageway for directing air in a flow direction through the air intake system, the inner surface further defining at least one locating groove extending along an inner perimeter of the intake duct, the intake duct including a pre-cleaner slot defined between the inner and outer surfaces, the intake duct further including a support ledge extending circumferentially around at least a portion of the inner perimeter of the intake duct;

a sealing member positioned on the support ledge; and
a pre-cleaner including an upper wall, a lower wall and a plurality of pre-cleaner elements extending between the upper and lower walls, the pre-cleaner further including at least one tab extending outwardly from at least one of the upper wall or the lower wall, the pre-cleaner configured to be installed within the intake duct by inserting the pre-cleaner through the pre-cleaner slot,
wherein, when the pre-cleaner is rotatably installed within the intake duct such that the at least one tab of the pre-cleaner is received within the at least one locating groove of the intake duct, the sealing member is configured to provide a sealed interface between at least a portion of the lower wall of the pre-cleaner and the support ledge of the intake duct.

12. The air intake system of claim 11 , wherein the sealing member is formed from a compressible material, wherein the compressible material is compressed between the at least a portion of the lower wall and the support ledge when the pre-cleaner is installed within the intake duct.

13. The air intake system of claim 11 , wherein the at least one locating groove extends circumferentially along the inner perimeter of the intake duct between a first end and a second end, the second end being offset from the first end in the flow direction of the intake duct.

14. The air intake system of claim 13 , wherein, when the at least one tab is received within the at least one locating groove, the pre-cleaner is configured to be rotated relative to the intake duct such that the at least one tab is moved between the first and second ends of the at least one locating groove.

15. The air intake system of claim 14 , wherein, when the at least one tab is moved to the second end of the at least one locating groove, the sealing member is compressed between the at least a portion of the lower wall of the pre-cleaner and the support ledge of the intake duct.

16. The air intake system of claim 11 , further comprising a cover configured to be coupled to the intake duct such that the cover extends over the pre-cleaner slot when the pre-cleaner is installed within the intake duct.

17. The air intake system of claim 16 , wherein the outer surface of the intake duct defines a recess adjacent to the pre-cleaner slot and wherein a portion of the cover is configured to be received within the recess when the cover is coupled to the intake duct, further comprising a sealing member positioned within the recess so as to provide a sealed interface between the cover and the intake duct.

18. The air intake system of claim 16 , wherein the pre-cleaner includes a handle extending outwardly relative to at least one of the upper wall or the lower wall, the cover defining a cavity configured to receive the handle when the cover is installed over the pre-cleaner slot.

19. The air intake system of claim 16 , wherein the intake duct includes at least one retention member positioned adjacent to the pre-cleaner slot, the at least one retention member configured to engage at least one corresponding retention member of the cover when the cover is installed over the pre-cleaner slot.

20. An air intake system for a work vehicle, the air intake system comprising:
an intake duct including an inner surface and an outer surface, the inner surface defining a passageway fo

Assignees

• Cnh Ind America Llc
• Cnh Ind America Llc

Inventors

• Gomez Lorenzo A
• Bunnell Michael C
• Klassen Mark D

Classifications

• F02M35/10091

  characterised by details of intake ducts: shapes; connections; arrangements (ducts within or on the plenum chamber F02M35/10039) · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D50/002

  Operations & Transport · mapped topic

• F02M35/0203

  by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges · CPC title

• F02M35/02483

  Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements · CPC title