Gas valve with outwardly-opening valve closure element
The invention relates to a gas valve ( 1 ), comprising: a valve body ( 2 ) which is hollow-cylindrical at least in parts and which forms a sealing seat ( 3 ) over which a gas flow path ( 4 ) is conducted, a reciprocating valve closure element ( 5 ) which is accommodated at least partly in the valve body ( 2 ) and which has a plate-like end portion ( 6 ) arranged outside the valve body, ( 2 ) which end portion interacts with the sealing seat ( 3 ), a sleeve ( 7 ) which at least partially surrounds the valve body ( 2 ) and the valve closure element ( 5 ) and which, together with the plate-like end portion ( 6 ) of the valve closure element ( 5 ), delimits an annular gap ( 8 ) which forms a throttle point in the gas flow path ( 4 ) downstream of the sealing seat ( 3 ).
1 . A gas valve ( 1 ), comprising:
a valve body ( 2 ) which is hollow-cylindrical at least in parts and which forms a sealing seat ( 3 ) over which a gas flow path ( 4 ) is conducted;
a reciprocating valve closure element ( 5 ) which is accommodated at least partly in the valve body ( 2 ) and which has a plate-like end portion ( 6 ) arranged outside the valve body, ( 2 ) wherein the plate-like end portion ( 6 ) interacts with the sealing seat ( 3 ); and
a sleeve ( 7 ) which at least partially surrounds the valve body ( 2 ) and the valve closure element ( 5 ) and which, together with the plate-like end portion ( 6 ) of the valve closure element ( 5 ), delimits an annular gap ( 8 ) which forms a throttle point in the gas flow path ( 4 ) downstream of the sealing seat ( 3 ),
wherein, on an end side, the sleeve ( 7 ) forms at least one opening ( 10 ) for creating a gas jet, a flow area through the at least one opening ( 10 ) being greater than a flow area through the annular gap ( 8 ),
wherein the at least one opening ( 10 ) is delimited by at least one flow conduction surface ( 11 ), which is aligned at an angle to a longitudinal axis (A) of the gas valve ( 1 ),
wherein the flow area through the annular gap ( 8 ) is the same over an entire stroke of the valve closure element ( 5 ).
2 . The gas valve ( 1 ) according to claim 1 , wherein upon a maximum stroke of the valve closure element ( 5 ), the flow area through the annular gap ( 8 ) is smaller than a flow area between the valve body ( 2 ) and the valve closure element ( 5 ) in a region of the sealing seat ( 3 ).
3 . The gas valve ( 1 ) according to claim 2 , wherein the gas flow path ( 4 ) is conducted through the valve body ( 2 ) over the sealing seat ( 3 ) and the annular gap ( 8 ) into a chamber ( 9 ), which is delimited by the sleeve ( 7 ).
4 . The gas valve ( 1 ) according to claim 3 , wherein the sealing seat ( 3 ) is tapered and opens towards the plate-like end portion ( 6 ) of the valve closure element ( 5 ).
5 . The gas valve ( 1 ) according to claim 4 , wherein the plate-like end portion ( 6 ) forms a sealing surface ( 12 ) which interacts with the sealing seat ( 3 ).
6 . The gas valve ( 1 ) according to claim 5 , wherein a bolt-like or needle-like portion ( 13 ) is connected to the plate-like end portion ( 6 ), via which the valve closure element ( 5 ) is guided.
7 . The gas valve ( 1 ) according to claim 5 , wherein the sealing surface ( 12 ) is rounded.
8 . The gas valve ( 1 ) according to claim 1 , wherein the gas flow path ( 4 ) is conducted through the valve body ( 2 ) over the sealing seat ( 3 ) and the annular gap ( 8 ) into a chamber ( 9 ), which is delimited by the sleeve ( 7 ).
9 . The gas valve ( 1 ) according to claim 1 , wherein the sealing seat ( 3 ) is tapered and opens towards the plate-like end portion ( 6 ) of the valve closure element ( 5 ).
10 . The gas valve ( 1 ) according to claim 1 , wherein the plate-like end portion ( 6 ) forms a sealing surface ( 12 ) which interacts with the sealing seat ( 3 ).
11 . The gas valve ( 1 ) according to claim 10 , wherein the sealing surface ( 12 ) is rounded.
12 . The gas valve ( 1 ) according to claim 1 , wherein a bolt-like or needle-like portion ( 13 ) is connected to the plate-like end portion ( 6 ), via which the valve closure element ( 5 ) is guided.
13 . A gas valve ( 1 ), comprising:
a valve body ( 2 ) which is hollow-cylindrical at least in parts and which forms a sealing seat ( 3 ) over which a gas flow path ( 4 ) is conducted;
a reciprocating valve closure element ( 5 ) which is accommodated at least partly in the valve body ( 2 ) and which has a plate-like end portion ( 6 ) arranged outside the valve body, ( 2 ) wherein the plate-like end portion ( 6 ) interacts with the sealing seat ( 3 ); and
a sleeve ( 7 ) which at least partially surrounds the valve body ( 2 ) and the valve closure element ( 5 ), the sleeve ( 7 ) including
a cylindrical section,
a bottom section disposed on an end side of the cylindrical section, the bottom section extending transverse to the cylindrical section, and
an opening ( 10 ) disposed on the bottom section, the opening ( 10 ) delimited by at least one flow conduction surface ( 11 ), which is aligned at an angle to a longitudinal axis (A) of the gas valve ( 1 ),
wherein the opening ( 10 ) is the only opening through which fluid passing through the valve body ( 2 ) exits the gas valve ( 1 ),
wherein the sleeve ( 7 ) and the plate-like end portion ( 6 ) of the valve closure element ( 5 ) delimit an annular gap ( 8 ) which forms a throttle point in the gas flow path ( 4 ) downstream of the sealing seat ( 3 ),
wherein a flow area through the opening ( 10 ) is greater than a flow area through the annular gap ( 8 ).
14 . The gas valve ( 1 ) according to claim 13 , wherein the bottom section is approximately perpendicular to the cylindrical section.
15 . The gas valve ( 1 ) according to claim 13 , wherein a portion of the opening ( 10 ) is aligned with the valve closure element ( 5 ) in a direction of the longitudinal axis (A).