Abstract: An electric valve includes a valve body component, a valve seat component, and a valve core component. The valve core component comprises a valve core. The valve core includes a body portion and a lower section, and the lower section is annular. A transition portion is included between the body portion and the lower section. The transition portion includes a first transition section connected with the lower section. An outer diameter of an upper end of the first transition section is greater than an outer diameter of a lower end of the first transition section.

Abstract: An electric valve, comprising a lead screw and a valve element assembly, wherein the lead screw has an external thread section, the valve element assembly has an internal thread section, the valve element assembly and the lead screw are in threaded connection by the fitting of the internal thread section and the external thread section, and at least the portion of the valve element assembly corresponding to the internal thread section is made of a material including a plastic material. Due to the portion of the valve element assembly corresponding to the internal thread section being made of a material including a plastic material, compared with two metal parts, a lead screw and a valve element being in direct threaded connection, the thread wear is reduced, and the service life of the electric valve is prolonged.

Abstract: An electric valve, comprising a housing component and a valve body component, wherein the housing component is fixedly connected to the valve body component; a control component comprises a motor, and a control component is provided in an inner cavity of the housing component. With respect to the background art, the influence of moisture on the motor can be reduced.

Abstract: A valve core assembly includes a transmission component and a valve core component. The valve core component includes a valve core body and a lower stop component, and the valve core body is substantially tubular. The lower stop component is provided in an inner chamber of the valve core body and is fixedly connected to the valve core body. The lower stop component includes a lower stop portion. An upper chamber is located above the lower stop portion, and a lower chamber is located below the lower stop portion. The lower stop component includes a first axial through hole communicating with the upper chamber and the lower chamber.

Abstract: An electric valve includes a valve seat component, a valve body component, and a valve core component. The valve core component includes a sealing portion. The valve core component is arranged in a valve chamber of the electric valve, and the valve core component includes a valve core body. The valve core body is substantially tubular, the valve core body has an integral structure, and the valve core body includes an annular thin-walled portion to abut against the sealing portion of the valve seat component. The thickness of the annular thin-walled portion is M, and 0.3 mm?M?2.0 mm.

Abstract: In an electric valve provided by the present invention, a gear reduction mechanism comprises a first ring gear, a second ring gear as well as an upper planetary gear assembly and a lower planetary gear assembly arranged in the longitudinal direction of the electric valve; at least part of the first ring gear is located in an inner cavity of a rotor member; an input gear part of the rotor member meshes with planetary gears of the upper planetary gear assembly; and the lower planetary gear assembly is rotatably connected to a transmission rod. In this embodiment, at least part of the first ring gear is located in the inner cavity of the rotor member, thereby reducing the size of the electric valve.

Abstract: An electric valve, including a valve body part, a valve seat part, and a valve core part. The valve core part is provided in an inner cavity of the valve body part. The valve core part comprises a valve core. The valve core comprises a lower segment portion. The valve base part comprises a first sealing portion. An end of the lower segment portion can be abutted against or separated from the first sealing portion. The valve body part comprises a bushing part. The valve core part comprises a second sealing portion. The diameter D1 of the axial projection loop of the outer edge of the second sealing portion on the cross section of the lower segment portion, the outer diameter D2 of the lower segment portion, and the inner diameter D3 of the lower segment portion, satisfy: 0.2 mm2?D1*(D2?D3)?6 mm2.

Abstract: An electric valve and manufacturing method therefor, the electric valve including a valve body part, a valve seat part, a transmission part and a valve core part, wherein the valve core part includes a valve core body and a lower stop part; the valve core body is essentially tubular, and the valve core body is of an integrated structure and includes an annular thin wall portion; the lower stop part is arranged in an inner cavity of the valve core body, and the lower stop part comprises a lower stop portion; an upper cavity is present above the lower stop portion, a lower cavity is present below the lower stop portion, and the lower stop part includes a first axial through hole which is in communication with the upper cavity and the lower cavity.