Filling head for an operating liquid tank with a gas and liquid valve body

Patent metadata

Field	Value
Publication number	US-10173522-B2
Application number	US-201715610871-A
Country	US
Kind code	B2
Filing date	Jun 1, 2017
Priority date	Jun 22, 2016
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A filling head for an operating liquid tank, in particular of a motor vehicle, comprising a filling tube with an inlet end, which lies farther away from the tank, and an outlet end, which lies nearer to the tank, the filling tube for conducting operating liquid in a filling direction from the inlet end to the outlet end, a venting arrangement with an inflow end, which lies nearer to the tank and an outflow end which lies farther away from the tank, which end is provided for passing of gas in a counter-flow direction with respect to liquid flowing in the filling direction, in a venting direction extending from the inlet to the outflow end, the venting arrangement is provided, at least in the area of its outflow end, separate from the filling tube, the venting arrangement has a valve with a gas valve body, which is movable between a closed position, in which a gas flow in a valve passage is prevented, and a passage position, in which the gas may flow in the valve passage past the gas valve body, the valve having a liquid valve body, which is movable between a blocking position, in which a liquid flow in the valve passage is blocked, and an open position, in which the valve passage past the liquid valve body is open.

First claim

The invention claimed is:

1. A filling head for an operating liquid tank, in particular of a motor vehicle, comprising a filling tube with an inlet end, which, in the mounted state, lies farther away from an associated tank, and an outlet end, which, in the mounted state, lies nearer to the associated tank, wherein the filling tube is provided for conducting an associated operating liquid in a filling direction from the inlet end to the outlet end, and further comprising a venting arrangement with an inflow end, which, in the mounted state, lies nearer to the associated tank and an outflow end which, in the mounted state, lies farther away from the associated tank, which venting arrangement is provided for passing of an associated gas in a counter-flow with respect to the associated liquid flowing in the filling tube in the filling direction, in a venting direction extending from the inlet to the outflow end, wherein the venting arrangement is formed, at least in the area of its outflow end, separate from the filling tube, wherein the venting arrangement has a valve with a gas valve body, which is movable between a closed position, in which an associated gas flow in a valve passage is prevented, and a passage position based on an associated gas pressure of the associated gas within the venting arrangement, in which the associated gas may flow in the valve passage past the gas valve body, the valve having a liquid valve body, which is displaceable between a blocking position, in which an associated liquid flow in the valve passage is blocked, and an open position, in which the valve passage past the liquid valve body is open.

2. The filling head according to claim 1 , wherein the gas valve body is biased towards the closed position, as a rest position, and is moveable by an associated gas overpressure of the associated gas pressure on the side of the inflow end with respect to the outflow end into the passage position and/or that the liquid valve body is biased towards the open position as a rest position and is moveable into the blocking position by the associated liquid rising to the outflow end.

3. The filling head according to claim 2 , wherein the liquid valve body has a density, which is greater than the density of the associated flowing gas at 20° C. and a pressure of 1013 hPa and smaller than the density of the associated operating liquid, for the passage of which the filling head is provided, measured at a temperature of 20° C. and a pressure of 1013 hPa.

4. The filling head according to claim 3 , wherein the liquid valve body has a density, which is smaller than the density of at least one of an associated aqueous urea solution, an associated gasoline, an associated super-gasoline, an associated diesel fuel, an associated cooling medium and an associated water.

5. The filling head according to claim 2 , wherein at least one of the gas valve body and the liquid valve body are movable into their respective resting position by gravity.

6. The filling head according to claim 1 , wherein the gas valve body and the liquid valve body are movable and displaceable, respectively, independently from each other between their respective operating positions.

7. The filling head according to claim 1 , wherein the liquid valve body is located, in the venting direction, in an upstream position with respect to the gas valve body.

8. The filling head according to claim 1 , wherein the gas valve body and the liquid valve body are positioned in a common valve housing.

9. The filling head according to claim 8 , wherein a portion of the valve passage is formed on an integral valve housing component, wherein the valve passage portion may be blocked in a blocking region and may be closed in a closing region that is spaced from the blocking region.

10. The filling head according to claim 9 , wherein the blocking region is located in a further upstream position in the venting direction and the closing region is located in a further downstream position in the venting direction.

11. The filling head according to claim 10 , wherein the blocking region is on an upstream longitudinal end, through the liquid valve body, depending on its operating position and the closing region is on a downstream longitudinal end, through the gas valve body, depending on its operating position.

12. The filling head according to claim 1 , wherein at least one of the gas valve body is a mushroom-shaped valve body and that the liquid valve body comprises a displaceable floating body and a membrane, which is movable by the floating body.

13. A valve arrangement with a gas valve body, which may be moved between a closed position, in which an associated gas flow in a valve passage is prevented, and a passage position based on an associated gas pressure of the associated gas flow within the valve arrangement, in which the associated gas may flow in the valve passage past the gas valve body, wherein the valve arrangement additionally has a liquid valve body, which is displaceable between a blocking position, in which an associated liquid flow in the valve passage is blocked, and an open position, in which the valve passage past the liquid valve body is open wherein the liquid valve body is biased towards the open position as a rest position and is moveable into the blocking position by the associated liquid flow rising in the valve arrangement.

14. The valve arrangement of claim 13 , for a filling head for an associated operating liquid tank, in particular of an associated motor vehicle, the filling head having a filling tube with an inlet end, which, in the mounted state, lies farther away from the associated liquid tank, and an outlet end, which, in the mounted state, lies nearer to the associated tank, wherein the filling tube is provided for conducting an associated operating liquid in a filling direction from the inlet end to the outlet end, and further comprising a venting arrangement with an inflow end, which, in the mounted state, lies nearer to the associated tank and an outflow end which, in the mounted state, lies farther away from the associated tank, which venting arrangement is provided for passing of an associated gas in a counter-flow with respect to the associated liquid flowing in the filling tube in the filling direction, in a venting direction extending from the inlet to the outflow end, wherein the venting arrangement is formed, at least in the area of its outflow end, separate from the filling tube, wherein the venting arrangement includes the valve arrangement with the gas valve body.

15. A motor vehicle with the filling head according to claim 1 and with an operating liquid tank, which may be filled and vented through the filling head.

16. The filling head according to claim 2 , wherein at least one of the gas valve body and the liquid valve body are movable into their respective resting position by gravity alone.

17. The filling head according to claim 8 , wherein the common valve housing is composed of two or more parts.

18. The filling head according to claim 1 , wherein the gas valve body is biased towards the closed position and the liquid valve body is biased towards the open position.

19. A filling head for an operating liquid tank, in particular of a motor vehicle, comprising a filling tube with an inlet end, which, in the mounted state, lies farther away from an associated tank, and an outlet end, which, in the mounted state, lies nearer to the associated tank, wherein the filling tube is provided for conducting an associated operating liquid in a filling direction from the inlet

Assignees

• Roechling Automotive Se & Co Kg

Inventors

• Marini Luca
• De Metri Ivan
• Chini Fabrizio

Classifications

• B60K2015/03289

  Float valves; Floats therefor · CPC title

• B60K15/03519 Primary

  Valve arrangements in the vent line · CPC title

• B60K15/04 Primary

  Tank inlets (B60K15/077 takes precedence) · CPC title

• B60K2015/03557

  comprising elements of the venting device integrated in the fuel tank, e.g. vapor recovery means · CPC title

• F16K24/042

  actuated by a float · CPC title