FILTER DEVICE HAVING A PUMP

• US 20180243670A1
• Filed: 09/22/2016
• Published: 08/30/2018
• Est. Priority Date: 09/25/2015
• Status: Active Grant

• Current Assignee: HYDAC FluidCareCenter GmbH
• Original Assignee: HYDAC FluidCareCenter GmbH
• Inventors: SCHOLL, Thomas, KREIBIG, Micha
• Granted Patent: US 10,639,569 B2
• Time in Patent Office: Days
• CPC Class Codes: B01D 2201/291 End caps
• CPC Class Codes: B01D 2201/347 Radial sealings
• CPC Class Codes: B01D 35/00 Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
• CPC Class Codes: B01D 35/005 Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
• CPC Class Codes: B01D 35/147 Bypass or safety valves
• CPC Class Codes: B01D 35/1573 Flow control valves
• CPC Class Codes: B01D 35/26 Filters with built-in pumps filters provided with a pump mounted in or on the casing aquarium pumps or filters A01K63/04
• CPC Class Codes: B01D 36/001 Filters in combination with devices for the removal of gas, air purge systems
• CPC Class Codes: B01D 36/003 Filters in combination with devices for the removal of liquids B01D35/185 takes precedence
• CPC Class Codes: F02M 37/16 characterised by provision of personally-, e.g. manually-, operated pumps
• CPC Class Codes: F02M 37/42 Installation or removal of filters
• CPC Class Codes: F02M 37/44 Filters structurally associated with pumps
• CPC Class Codes: F02M 37/48 Filters structurally associated with fuel valves
• CPC Class Codes: F02M 37/54 characterised by air purging means having priming pumps F02M37/16

Abstract

The invention relates to a filter device, in particular provided for use with diesel fuels, comprising a filter element (19) that can be exchangeably accommodated in a filter housing, which filter device is characterized in that a fluid pump device (46) having two pump chambers (45, 49) is present as part of the filter device, which pump chambers, by means of a pump piston (51) guided in said chambers in a longitudinally movable manner, are separated from each other in a fluid-tight manner at least in one of the two directions of movement of the pump piston, and that each pump chamber (45, 49) is assigned a valve (39, 63), which opens or closes oppositely to the other valve (39, 63) when the pump device (46) is actuated.

Claims

1. A filter device, in particular provided for use with diesel fuels, comprising a filter element that can be exchangeably accommodated in a filter housing (19), characterized in that a fluid

pump device (46) with two pump chambers (45, 49) is present, which by means of a pump piston guided longitudinally movably in these chambers (51) at least in one of its two directions of travel are separated from one another in a fluid tight manner and wherein for each pump chamber (45, 49) assigned a valve (39, 63) provision is made that working in opposite direction to the respective other valve (39, 63) upon actuation of the pump device (46) opens or closes.

2. The filter device according to claim 1, characterized in that at least the one valve (39) is part of the filter element (19) and in its opened position transfers fluid to its assigned pump chamber (45) and in its closed position blocks this route.

3. The filter device according to claim 1, characterized in that the other valve (63) is part of the filter housing, in particular of a housing head (15), which can be screwed back onto a housing pot (16) in detachable manner with the accommodating filter element (19), and that the other valve (63) in its opened position transfers fluid to its assigned pump chamber (49) and in its closed position blocks this route or that both valves (39, 63) are part of the filter element (19).

4. The filter device according to claim 1, characterized in that the pump piston (51) is connected to a rod-shaped actuation device (69), which, led out of the filter housing, by means of a handle (71) enables the movement of the pump piston (51) in its two pump chambers (45, 49) by hand.

5. The filter device according to 1, characterized in that the pump chamber (45), of the filter element (19) that can be connected to the clean side (29) of the filter element (19) by means of the one valve (39), has a fluid connection (77) for the further transport of the fluid to a pre-feed pump (1), preferably a diesel injection system.

6. The filter device according to claim 1, characterized in that in passing through the pump chamber (49) which receives the fluid from the other valve (63) in its open position, in the direction of its decreasing chamber volume, fluid from this chamber (49) is displaced via the pump piston (51) in the direction of the other pump chamber (45).

7. The filter device according to claim 1, characterized in that the pump piston (51) has an elastically flexible edge (72) along its outer periphery, which in the one direction of travel of the pump piston (51) permits fluid flow from the one pump chamber (49) to the other (45) and in the other direction of travel blocks this route.

8. The filter device according to claim 1, characterized in that the valve of the filter element (19) has a valve ball (39), which, guided in a cage (37) with fluid passages, is part of an end cap (21) of the filter element (19), which faces the assignable pump chamber (45).

9. The filter device according to claim 1, characterized in that the other valve (63) is formed from a spring loaded check valve (73, 75) whose intake duct (65) is connected to the clean side (57) of the filter element (19).

10. Supply system for an internal combustion engine with a fluid with an upstream pre-feed pump (1) and main feed pump (11), characterized in that, viewed in the fluid delivery direction, a filter device (19, 46) according to claim 1 is connected upstream of the pre-feed pump (1).