Valve device for a gaseous medium, and tank device for storing a gaseous medium

1. A valve apparatus ( 100 ) for a gaseous medium, the valve apparatus having a valve housing ( 6 ) and having a first magnet armature ( 14 ) which is arranged therein and which is movable along a longitudinal axis ( 18 ), said first magnet armature ( 14 ) interacting with a first sealing seat ( 32 ) for opening and closing an outlet opening ( 40 ), wherein a second magnet armature ( 16 ), which is movable along the longitudinal axis ( 18 ), is arranged in the valve housing ( 6 ), said second magnet armature ( 16 ) being received at least partially in a recess ( 38 ) of the first magnet armature ( 14 ), and said second magnet armature ( 16 ) interacting with a second sealing seat ( 34 ) for opening and closing a passage opening ( 20 ) formed in the first magnet armature ( 14 ), characterized in that the first magnet armature ( 14 ) and the second magnet armature ( 16 ) are comprised by a magnet device ( 11 ), by way of which magnet device ( 11 ) the first magnet armature ( 14 ) and the second magnet armature ( 16 ) are movable along the longitudinal axis ( 18 ) by means of exactly one magnet coil ( 10 ), wherein the gaseous medium enters the valve housing ( 6 ) along the longitudinal axis ( 18 )

wherein a spring ( 30 ) is arranged in the valve housing ( 6 ), the spring ( 30 ) configured to force the second magnet armature ( 16 ) toward the second sealing seat ( 34 ), the spring ( 30 ) also configured to force the first magnet armature ( 14 ) toward the first sealing seat ( 32 ),

wherein the spring ( 30 ) has a centerline that is collinear with the longitudinal axis ( 18 ),

wherein the spring ( 30 ) is seated in a recess ( 50 ) of the valve housing ( 6 ), and

wherein an inlet opening ( 22 ) discharges directly into the recess ( 50 ) of the valve housing ( 6 ).

2. The valve apparatus ( 100 ) as claimed in claim 1 , characterized in that the magnet coil ( 10 ) has a coil housing ( 8 ), and the magnet coil ( 10 ) at least partially surrounds the first magnet armature ( 14 ) and the second magnet armature ( 16 ) in the valve housing ( 6 ).

3. The valve apparatus ( 100 ) as claimed in claim 1 , characterized in that a stop element ( 12 ) is arranged in the valve housing ( 6 ), on which stop element ( 12 ) the first sealing seat ( 32 ) is formed.

4. The valve apparatus ( 100 ) as claimed in claim 1 , characterized in that a flow cross section at the first sealing seat ( 32 ) is larger than a flow cross section at the second sealing seat ( 34 ).

5. The valve apparatus ( 100 ) as claimed in claim 1 , characterized in that the first magnet armature ( 14 ) has a shoulder ( 36 ), which shoulder ( 36 ) interacts with a shoulder ( 52 ) of the second magnet armature ( 16 ), and, during a longitudinal movement of the second magnet armature ( 16 ), the latter serves as a driver for the first magnet armature ( 14 ).

6. The valve apparatus ( 100 ) as claimed in claim 1 , wherein the gaseous medium enters the valve housing ( 6 ) through the inlet opening ( 22 ), which has a centerline collinear with the longitudinal axis ( 18 ).

7. The valve apparatus ( 100 ) as claimed in claim 6 , wherein the first magnet armature ( 14 ) and the second magnet armature ( 16 ) have centerlines collinear with the longitudinal axis ( 18 ).

8. The valve apparatus ( 100 ) as claimed in claim 7 , wherein the outlet opening ( 40 ) is arranged at an opposite side of the valve housing ( 6 ) as the inlet opening ( 22 ), and the outlet opening ( 40 ) has a centerline collinear with the longitudinal axis ( 18 ).

9. The valve apparatus ( 100 ) as claimed in claim 8 , wherein the valve apparatus ( 100 ) is configured such that:

(A) when the second magnet armature ( 16 ) is not seated on the second sealing seat ( 34 ), the valve apparatus ( 100 ) passes the gaseous medium through the inlet opening, then between the first magnet armature ( 14 ) and the second magnet armature ( 16 ), then through the passage opening ( 20 ), and then through the outlet opening ( 40 ), and

(B) when the first magnet armature ( 14 ) is not seated on the first sealing seat ( 32 ), the valve apparatus ( 100 ) is configured to pass the gaseous medium through the inlet opening, then around the first magnet armature ( 14 ), and then through the outlet opening ( 40 ).

10. A tank apparatus ( 1 ) for storing a gaseous medium, the tank apparatus having a tank ( 2 ) and having a valve apparatus ( 100 ) as claimed in claim 1 .

11. The tank apparatus ( 1 ) as claimed in claim 10 , characterized in that the tank ( 2 ) comprises a tank housing ( 3 ) with a neck region ( 28 ), in which neck region ( 28 ) the valve apparatus ( 100 ) is arranged, wherein the valve housing ( 6 ) is integrated at least partially into the tank housing ( 3 ), and the valve housing ( 6 ) seals off a tank interior space ( 4 ) of the tank ( 2 ) by means of a sealing element ( 26 ).

12. The tank apparatus ( 1 ) as claimed in claim 10 , wherein the valve apparatus ( 100 ) is configured to control a throughflow cross section for gaseous medium from the tank ( 2 ).

13. A fuel cell arrangement having a tank apparatus ( 1 ) as claimed in claim 10 for storing hydrogen for the operation of a fuel cell.