Multiple-function pumping device for fountains, ornamental fountains and the like
View Patent ↗A multiple-function pumping device includes a pump for supplying at least one jet, an electric motor with a stator and a rotor for driving the pump, and circuitry for electrically connecting the motor to a main voltage power supply line. The stator is provided with an excitation winding. The stator has electrical circuit components for powering an external lighting device with low voltage. Preferably, the low-voltage powering circuit components include an electric transformer having as a primary circuit the excitation winding of the motor and further include a secondary circuit which is also wound around the stator.
1. A multi-function pumping device for fountains, comprising:
a pump for supplying at least one jet; and
an electric motor of the synchronous type with permanent magnets, said electric motor comprising:
a rotor connected to said pump for driving said pump;
a stator having an excitation winding; and
means for electrically connecting said motor to a main voltage power supply line,
said stator comprising two rectilinear pole shoes spaced apart from one another and oriented substantially parallel to a longitudinal axis of said motor and further comprising low-voltage powering means for powering external low-voltage lighting means,
said excitation winding being wound around both of said pole shoes,
said rotor having a rotation axis substantially transverse to said longitudinal axis,
said low-voltage powering means comprising an electric transformer having a primary circuit consisting of the excitation winding of the motor and a secondary circuit which is mounted onto said stator,
wherein said secondary circuit comprises a winding which is wound around both said pole shoes along respective longitudinal axes which are substantially coaxial with the excitation winding of the motor.
2. Device according to claim 1 , wherein said primary circuit of the transformer has dimensions sufficient for ensuring correct operation of the electric motor and for powering said lighting means with low voltage.
3. Device according to claim 1 , wherein said lighting means comprise at least one incandescent lamps.
4. Device according to claim 3 , wherein said at least one incandescent lamp is of the halogen type.
5. Device according to claim 3 , wherein said means for electrically connecting said motor to a main voltage power supply line includes suitable insulating means.