Johnson Electric S.a.

Johnson Electric International Ag

Chuan Jiang Guo

Chuan Hui Fang

Xiao Zhang

Feng Xue

Hay Tak Tsang

An impeller includes a back cover plate, and vanes and a hub disposed on the back cover plate. The impeller further includes a sealing ring disposed on one end of the impeller away from the back cover plate. A pump using the impeller includes a volute housing and a driving device. The volute housing includes a diffusor chamber, an inlet pipe and an outlet pipe. The impeller is rotatably received in the diffusor chamber and connected to the driving device. A baffle portion is disposed on an end wall in the diffusor chamber adjacent the inlet pipe. The baffle portion engages with the sealing ring to prevent back flow of the fluid. The pump has enhanced fluid delivery efficiency. The back cover plate may further define arc strip-shaped balance holes for reducing an axial force applied to the impeller, such that rotation of the impeller is more stable.

Impeller and pump using the impeller

A liquid pump has a pump housing defining a pump chamber. A motor is accommodated within the pump housing and separated from the pump chamber by an end cap. An impeller disposed within the pump chamber is driven by the motor. The pump chamber has an inlet and one or more outlets. The outlets are located on a sidewall of the pump chamber and extend in a direction substantially tangential to an outer circumference of the pump chamber. Each outlet has a first end near the pump chamber, and a second end remote from the pump chamber. A cross-sectional area Sof the first end is smaller than a cross-sectional area Sof the second end, forming a diffuser within the outlet.

Pump

An electric pump has a pump casing, a sealing plate, an impeller and a motor for driving the impeller. The pump casing has a main body. A recess is formed in the main body and with the sealing plate defines a pump chamber. A suction port is connected to the pump chamber by a suction channel and a suction passage formed in the main body. A discharge port is connected to the pump chamber by a discharge channel. The suction passage extends axially from the recess. The recess, suction passage, suction channel and discharge channel are all shaped in a manner allowing the pump casing can be molded as a monolithic structure in a single injection molding process.

Circulation pump

A centrifugal pump has an electric motor, an impeller driven by the motor and a spiral volute. The impeller has an annular base plate and a plurality of vanes arranged on the base plate. The spiral volute has an inlet, an outlet and an impeller chamber in which the impeller is disposed. The inlet extends outwardly from a top wall of the volute. The outlet extends outwardly from a side wall of the volute in the spiral direction of the volute. The spiral volute has a wrap angle between 360 to 460 degrees. A washing apparatus incorporating the centrifugal pump is also provided.

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Shenzhen, China

Chuan Jiang Guo