Brinks Gilson & Lione
Drive control method for electronic expansion valve
A drive control method for an electric expansion valve is disclosed. In the disclosure, before applying a drive pulse signal corresponding to a rotary pulse number to a motor of the electronic expansion valve, a secondary positioning is performed on a relative position between stator magnetic field of the motor and rotor magnetic field of the motor by applying a holding current of a first duration time to the motor, applying an pulse signal of an additional pulse number to the motor, and applying a holding current of a second duration time to the motor, and a same secondary positioning operation is also performed on the motor after applying the drive pulse signal corresponding to the rotary pulse number to the motor of the electronic expansion valve, which ensures that the electronic expansion valve operates according to the drive pulse signal corresponding to the rotary pulse number.
Hisense USA Corp. Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd.
F F G Y F F G
F25B F25B G05D Y02B F24F F25B G05B
additional inventional inventional additional additional inventional inventional
Xianlin Xizhi Yuping Shuliang
Zhang Li Deng Huang