Patent ID: 7806347
Filing Date: 2010-10-05
Classification: F04D,H02K

Abstract:
1. A water display device comprising: several water jets each provided with a water pump, respectively; wherein the water pumps each comprise: a housing separated into a pump housing part and a motor housing part, wherein the pump housing part is provided with an intake opening and an outlet opening so that water passes only through the pump housing part; an impeller with a shaft arranged rotatably in the pump housing part; an electric motor arranged in the motor housing part wherein the electric motor is an electronically commutated motor with a rotor and coils and is drivingly connected to the shaft; control and governing electronics for the electric motor arranged in the motor housing part and comprising a speed detection, a processor, and a data storage device; a common control device; a bus system connecting the water pumps serially to one another and connecting the serially connected water pumps to the common control device.