Nanjing Chervon Industry Co., Ltd.

State Grid Jiangsu Electric Power Co., Ltd Nanjing Power Supply Company

Jingwei Li

Toshinari Yamaoka

Fangjie Nie

Jian Zhang

Jianpeng Guo

Hong Zhu

Wei Li

Lei Wei

Shaoyong Guo

Qiusheng Li

Min Lu

Yangling Chen

Zhusheng Nie

A blower includes a motor, a fan driven by the motor to rotate about a first axis, a power supply device, and a housing assembly accommodating the motor and including an inner duct and an outer duct assembly. The inner duct is formed with an inner air inlet. The outer duct assembly surrounds the inner duct. The outer duct assembly includes an outer duct and a hood, where the outer duct is disposed on a front side of the hood, an outer air outlet is formed at an end of the outer duct facing away from the hood, an outer air inlet is formed on the hood and has a front end portion and a rear end portion along a direction of the first axis, and the inner air inlet is disposed between the front end portion and the rear end portion along the direction of the first axis.

Blower

A blower includes an air tube, an electric motor, a fan, a housing, and a circuit board. The air tube is provided with an air duct extending along a first straight line. The electric motor is arranged in the air duct. The fan is operative to be driven by the electric motor. The housing is provided with a handle configured to be held by a user and a joining portion configured for connecting to a power source. And the circuit board is electrically connected to the electric motor. The air tube is provided with an air inlet at one end of the air duct and an air outlet at another end of the air duct. The fan is arranged in the air duct, and when the fan rotates, a blowing airflow entering the air duct from the air inlet is generated.

Blower having multiple control switches

The embodiment of the invention provides a measurement method and a measurement device for quality of a power distribution and utilization channel. The method comprises the steps of determining priority of each branch in the power distribution and utilization channel of which the quality is to be measured; and determining quality of the power distribution and utilization channel of each branch according to the priority. The method and the device are used for improving monitoring strength on a whole optical fiber channel, and enhancing application universality.

Method and device for measuring the quality of electrical channel

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Nanjing, China

Jingwei Li