Abstract: A throttle valve comprises a valve body (1) provided with a flow passage (13) and a mounting hole (14), a valve core movably inserted inside the mounting hole (14) and a driving mechanism for the valve core disposed out of the valve body (1) and connected with the valve body (1); the driving mechanism directly drives the valve core to slide axially, said driving mechanism includes a valve seat (2) with a cavity (21) inside, a coil (3) disposed in said cavity (21), a magnetic element (4) surrounded by said coil (3), which can be driven to slide relatively to said coil (3) by the electromagnetic force, an iron core (5) connected with said valve core and said magnetic element (4), and an elastic part acting on said valve core. The damping force of the elastic part to said valve core resists the electromagnetic force of said coil (3) to said magnetic element (4). The throttle valve of the present invention has simple structure, low cost and light weight.

Abstract: A throttle valve comprises a valve body (1) provided with a flow passage (13) and a mounting hole (14), a valve core movably inserted inside the mounting hole (14) and a driving mechanism for the valve core disposed out of the valve body (1) and connected with the valve body (1); the driving mechanism directly drives the valve core to slide axially, said driving mechanism includes a valve seat (2) with a cavity (21) inside, a coil (3) disposed in said cavity (21), a magnetic element (4) surrounded by said coil (3), which can be driven to slide relatively to said coil (3) by the electromagnetic force, an iron core (5) connected with said valve core and said magnetic element (4), and an elastic part acting on said valve core. The damping force of the elastic part to said valve core resists the electromagnetic force of said coil (3) to said magnetic element (4).