The invention relates to a valve device (1), in particular a wiper liquid valve, comprising a housing (2) having a supply connection (3), a discharge connection (4) and a media channel (5) connecting the supply connection (3) to the discharge connection (4), and comprising a moveable valve element (12), which is pressed against a valve seat (19) formed in the housing (2) by a first spring element (27) in order to close the media channel (5), and which is pressed away from the valve seat by a second spring element (15) in order to open the media channel (5), wherein the first spring element (27) is produced from a thermally activatable material and has a first spring force in a deactivated state which is smaller than that of the second spring element (15), and a second spring force in an activated state which is greater than that of the second spring element (15) in such a way that the valve element (12) is moved to close the media channel (5), wherein at least sections of the first spring element (27) are retained in a hollow cylindrical housing protrusion (6) protruding outwards from the housing (2), wherein an, in particular, annular sealing element (18) is arranged on the valve element (12), which is designed to cooperate with the valve seat (19) in the activated state of the first spring element. According to the invention, the valve element (12) has at least one radial protrusion (21) axially spaced apart from the sealing element (18) in the direction of the housing protrusion (6), which is designed to cooperate with at least one axial stop (29), formed in the housing (2) and axially spaced apart from the valve seat (19), in the direction of the valve seat (19) in order to limit a maximum deformation of the sealing element (18).
VENTILEINRICHTUNG, INSBESONDERE WISCHWASSERVENTIL
VALVE DEVICE, IN PARTICULAR A WIPER LIQUID VALVE
DISPOSITIF DE SOUPAPE ET, PLUS SPÉCIFIQUEMENT, SOUPAPE DE LIQUIDE D'ESSUIE-GLACE
2024-05-29
Patent
Electronic Resource
German