Relay valve, valve device, and vehicle therewith
View Patent ↗A relay valve ( 2 ) for a compressed air system, has a housing, which has a pressure medium inlet that can be connected to a pressure medium source, at least one pressure medium outlet that can be connected to a consuming unit, at least one control inlet, and at least one vent ( 32 ) leading to atmosphere. The relay valve ( 2 ) furthermore has a relay valve piston ( 14 ), which is arranged in the housing in such a way that the relay valve piston can be moved along a relay valve piston axis ( 16 ) and divides a control chamber ( 22 ) and a working chamber ( 26 ) from each other in the housing. The relay valve ( 2 ) has a damping volume ( 52 ), which is pneumatically connected to the control chamber ( 22 ), thereby advantageously enabling the oscillation capacity of the relay valve piston ( 14 ) to be reduced.
1. A relay valve for a compressed air system, comprising:
a housing, which has a pressure medium inlet configured to be connected to a pressure medium source, at least one pressure medium outlet configured to be connected to a consuming unit, at least one control inlet, and at least one vent ( 32 ) leading to atmosphere,
a relay valve piston ( 14 ), which is arranged in the housing in such a way that the relay valve piston is movable along a relay valve piston axis ( 16 ), the relay valve piston separating a control chamber ( 22 ) and a working chamber ( 26 ) from each other in the housing, the control chamber ( 22 ) being connectable to the control inlet, the working chamber ( 26 ) being connectable to the pressure medium source, the pressure medium outlet, and the vent,
a damping volume ( 52 ) pneumatically connected to the control chamber ( 22 ),
a passage ( 54 ) between the damping volume ( 52 ) and the control chamber ( 22 ), which passage is designed to connect the damping volume ( 52 ) pneumatically to the control chamber ( 22 ), and
a connecting restrictor ( 56 ) arranged in the passage ( 54 ).
2. The relay valve as claimed in claim 1 , wherein the damping volume ( 52 ) is integrated into the housing.
3. The relay valve as claimed in claim 1 , wherein the damping volume ( 52 ) is arranged in the relay valve piston ( 14 ).
4. The relay valve as claimed in claim 1 ,
further comprising at least one control pressure lines ( 24 ; 58 ; 60 ; 68 ), which is configured to feed a pressure medium subject to control pressure into the passage ( 54 ) between the damping volume ( 52 ) and the control chamber ( 22 ).
5. The relay valve as claimed in claim 1 ,
further comprising an orifice plate ( 66 ) between the damping volume ( 52 ) and the control chamber ( 22 ), wherein the orifice plate ( 66 ) has an opening which acts as a connecting restrictor ( 56 ).
6. The relay valve as claimed in claim 1 ,
further comprising a control pressure line ( 24 ), which leads directly into the control chamber ( 22 ) and is configured to feed a pressure medium directly into the control chamber ( 22 ).
7. The relay valve as claimed in claim 1 ,
further comprising a control pressure line ( 58 ), which leads directly into the damping volume ( 52 ) and is configured to feed a pressure medium directly into the damping volume ( 52 ).
8. A valve arrangement for a compressed air system, comprising a relay valve ( 2 ) having
a housing, which has a pressure medium inlet configured to be connected to a pressure medium source, at least one pressure medium outlet configured to be connected to a consuming unit, at least one control inlet, and at least one vent ( 32 ) leading to atmosphere,
a relay valve piston ( 14 ), which is arranged in the housing in such a way that the relay valve piston is movable along a relay valve piston axis ( 16 ), the relay valve piston separating a control chamber ( 22 ) and a working chamber ( 26 ) from each other in the housing, the control chamber ( 22 ) being connectable to the control inlet, the working chamber ( 26 ) being connectable to the pressure medium source, the pressure medium outlet, and the vent,
a damping volume ( 52 ) pneumatically connected to the control chamber ( 22 ),
a passage ( 54 ) between the damping volume ( 52 ) and the control chamber ( 22 ), which passage is designed to connect the damping volume ( 52 ) pneumatically to the control chamber ( 22 ), and
a connecting restrictor ( 56 ) arranged in the passage ( 54 ).
9. A vehicle comprising at least one relay valve ( 2 ) having
a housing, which has a pressure medium inlet configured to that can be connected to a pressure medium source, at least one pressure medium outlet configured to be connected to a consuming unit, at least one control inlet, and at least one vent ( 32 ) leading to atmosphere,
a relay valve piston ( 14 ), which is arranged in the housing in such a way that the relay valve piston is movable along a relay valve piston axis ( 16 ), the relay valve piston separating a control chamber ( 22 ) and a working chamber ( 26 ) from each other in the housing, the control chamber ( 22 ) being connectable to the control inlet, the working chamber ( 26 ) being connectable to the pressure medium source, the pressure medium outlet, and the vent,
a damping volume ( 52 ) pneumatically connected to the control chamber ( 22 ),
a passage ( 54 ) between the damping volume ( 52 ) and the control chamber ( 22 ), which passage is designed to connect the damping volume ( 52 ) pneumatically to the control chamber ( 22 ), and
a connecting restrictor ( 56 ) arranged in the passage ( 54 ).