Filter device

• US 10,456,721 B2
• Filed: 07/30/2018
• Issued: 10/29/2019
• Est. Priority Date: 09/15/2009
• Status: Active Grant

• Current Assignee: Mahle International GmbH (MAHLE-STIFTUNG GmbH)
• Original Assignee: Mahle International GmbH (MAHLE-STIFTUNG GmbH)
• Inventors: Braunheim, Michael, Lika, Torsten
• Primary Examiner(s): Lithgow, Thomas M
• Application Number:
  US16/049,506
• Publication Number:
  US 20180345188A1
• Time in Patent Office: 456 Days
• CPC Class Codes: B01D 17/045 with coalescers
• CPC Class Codes: B01D 2201/291 End caps
• CPC Class Codes: B01D 2201/295 with projections extending in a radial outward direction, e.g. for use as a guide, spacing means
• CPC Class Codes: B01D 2201/305 Snap, latch or clip connecting means
• CPC Class Codes: B01D 2201/4007 Use of cam or ramp systems
• CPC Class Codes: B01D 2201/4053 using keys
• CPC Class Codes: B01D 2201/4084 Snap or Seeger ring connecting means
• CPC Class Codes: B01D 27/00 Cartridge filters of the throw-away type
• CPC Class Codes: B01D 27/08 Construction of the casing
• CPC Class Codes: B01D 29/11 with bag, cage, hose, tube, sleeve or like filtering elements
• CPC Class Codes: B01D 35/005 Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
• CPC Class Codes: B01D 35/153 Anti-leakage or anti-return valves
• CPC Class Codes: B01D 35/16 Cleaning-out devices , e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
• CPC Class Codes: B01D 35/30 Filter housing constructions
• CPC Class Codes: B01D 36/003 Filters in combination with devices for the removal of liquids B01D35/185 takes precedence
• CPC Class Codes: B01D 36/006 Purge means
• CPC Class Codes: F01M 11/03 Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means filters B01D
• CPC Class Codes: F02M 37/24 characterised by water separating means
• CPC Class Codes: F02M 37/42 Installation or removal of filters

Abstract

A filter device may include a ring filter element arranged in a filter housing in an upright manner. The ring filter element may have an upper end disc, a lower end disc, a filter material arranged therebetween, and a dirt pot provided on the lower end disc. The dirt pot may be provided on the lower end disc, a protruding pin, and an opening on a base side of the dirt pot. The filter device may include a functional element having a channel configured to receive the protruding pin. A portion of the functional element may be configured to penetrate the opening of the dirt pot such that the ring filter element is sealed at the opening. The portion of the functional element may have at least one water discharge opening. The filter device may be operational when the pin engages into the channel.

Claims

1. A filter element, comprising:

an upper end disc;

a lower end disc;

a filter material arranged between the upper end disc and the lower end disc;

a dirt pot on the lower end disc;

a pin attached to the dirt pot at an attachment point and configured to be received within a channel in an installation orientation, the pin having a sealing element that is configured to tightly close with the channel in the installed orientation, the pin extending away from the dirt pot along an axis, the pin having a base of a first width at the attachment point that is approximately orthogonal to the axis, the pin having a free end, and a groove defined between the attachment point and the free end for the sealing element and having a second width that defines a circumference of the groove, the second width approximately orthogonal to the axis, wherein the first width is greater than the second width; and

an opening in the dirt pot.

2. The filter element of claim 1, wherein the sealing element has an outer diameter, the first width being greater than the outer diameter.

3. The filter element of claim 1, wherein the pin includes an inner shoulder and an outer shoulder that axially contain the sealing element within the groove, and the inner shoulder is located at an axial location along the axis that is between the sealing element and the attachment point.

4. The filter element of claim 3, wherein a width of the pin includes a portion that varies in a continuous and non-narrowing fashion between the inner shoulder and the attachment point.

5. The filter element of claim 4, wherein the width of the pin along the portion increases between the inner shoulder and the attachment point.

6. The filter element of claim 1, wherein the pin defines a third width between the groove and the free end, the third width being greater than the second width, and wherein the free end is approximately orthogonal to the axis.

7. The filter element of claim 1, wherein the pin includes a shaft that is a cruciform cross-section.

8. The filter element of claim 1, wherein the sealing element is an O-ring.

9. The filter element of claim 1, wherein the dirt pot includes an internal space for a separate water separator arranged therein.

10. The filter element of claim 1, wherein the pin is positioned at an offset radial location from a central axis of the filter element, such that the free end of the pin engages with a guide of a functional element prior to positioning the pin within the channel in the installation orientation.

11. A filter element, comprising:

an upper end disc;

a lower end disc;

a filter material arranged between the upper end disc and the lower end disc;

a dirt pot having an internal space on the lower end disc;

a pin attached to the dirt pot at an attachment location along a surface of the dirt pot and configured to be received within a channel in an installation orientation, the pin having a sealing element that is configured to tightly close with the channel in the installed orientation, the pin extending away from the dirt pot along an axis, the pin having a base of a first width at the attachment location extends along the attachment location, the pin having a free end, and a groove defined between the attachment location and the free end for the sealing element and having a second width that defines a circumference of the groove, the second width approximately orthogonal to the axis, wherein the first width is greater than the second width; and

an opening in the dirt pot spaced away from the pin.

12. The filter element of claim 11, wherein the pin is positioned at an offset radial location from a central axis of the filter element, such that the free end of the pin engages with a guide of a functional element prior to positioning the pin within the channel in the installation orientation.

13. The filter element of claim 11, wherein the sealing element has an outer diameter, the first width being greater than the outer diameter.

14. The filter element of claim 11, wherein the pin includes a first shoulder and a second shoulder that axially contain the sealing element within the groove, and the first shoulder is located at an axial location along the axis that is between the sealing element and the attachment location.

15. The filter element of claim 14, wherein a width of the pin includes a portion that varies in a continuous and non-narrowing fashion between the first shoulder and the attachment location.

16. The filter element of claim 15, wherein the width of the pin along the portion increases between the first shoulder and the attachment location.

17. The filter element of claim 11, wherein the pin includes a shaft that is a cruciform cross-section.

18. The filter element of claim 11, wherein the dirt pot includes the internal space for a separate water separator arranged therein.

19. The filter element of claim 11, wherein the surface is a curved surface.