Heating circuit opening and closing device for wash water reservoir in motor vehicle, has closing body whose opening and closing movement is controlled by actuating unit having thermal head with membrane that closes space

摘要

The device has a supply channel (27) leading to a conduit (29) and an outlet channel (31). A closing body (32) opens and closes the conduit and determines flow of a heating fluid that heats wash water that partially surrounds the device. The body`s opening and closing movement is controlled by an actuating unit having a thermal head (42) with a membrane (58) that closes a space (59) filled with gaseous fluid.