Electronic expansion valve
AssigneeZhejiang Sanhua Co., Ltd.
InventorsMing Lv, Caiyi Zhan
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention provide an electronic expansion valve, including a magnetic rotor and a screw rod, and further including an output shaft. The magnetic rotor is surroundingly provided on the output shaft, and the output shaft is slidably connected to the screw rod in an axial direction and drivably connected to the screw rod in a circumferential direction. Since the output shaft is slidably connected to the screw rod in an axial direction and drivably connected to the screw rod in a circumferential direction, the magnetic rotor does not subject to an axial force transmitted by the screw rod and rotates flexibly.
Claims16
An electronic expansion valve, comprising
- a magnetic rotor;
- a screw rod;
- an output shaft on which the magnetic rotor is surroundingly provided;
- and
- a nut provided inside the magnetic rotor;
- wherein:
- the nut comprises a first guiding section and an internal thread section,
- a top end of the nut abuts against a support surface of the output shaft,
- the internal thread section of the nut is drivably connected with a thread of the screw rod, and
- a lower end of the output shaft is inserted into the first guiding section of the nut and is connected to an upper end of the screw rod such that the output shaft is slidably connected to the screw rod in an axial direction and drivably connected to the screw rod in a circumferential direction.
An electronic expansion valve, comprising:
- a magnetic rotor;
- a screw rod;
- an output shaft on which the magnetic rotor is surroundingly provided;
- a nut provided inside the magnetic rotor;
- and
- a support sleeve;
- wherein:
- the nut is fixedly provided inside the support sleeve,
- a top end of the support sleeve abuts against a support surface of the output shaft,
- the nut is drivably connected with a thread of the screw rod, and
- a lower end of the output shaft is inserted in an upper portion of the support sleeve and is connected to an upper end of the screw rod such that the output shaft is slidably connected to the screw rod in an axial direction and drivably connected to the screw rod in a circumferential direction.
Dependencies are inferred from the claim text.