Fan unit for generating gas streams
First Claim
1. A fan unit for generating gas streams, in particular for vacuum cleaners, which unit comprises a motor (4) having a motor axis and an impeller wheel (1) which is also electromagnetically active and in conjunction with electromagnetically active parts (19) of the motor stator (3) generates the torque of the impeller wheel via an air gap (11) extending perpendicular to the motor axis, and formed between surfaces of the impeller wheel (1) and the motor stator (3), wherein the electromagnetically active part of the impeller wheel (1) is a conductive disc (7) which is arranged in a plane extending perpendicular to the motor axis and which has one surface (8) extending perpendicular to the motor axis and bounding the air gap (11) at the rotor side, and at the stator side the air gap is bounded by planar stator poles (19) formed on a radial bounding surface (12) of an iron cylinder (15), extending perpendicular to the motor axis, by the provision of radial slots (17) in which the coils (20) are arranged.
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Accused Products
Abstract
The invention relates to a fan unit for generating gas streams, in particular for vacuum cleaners, which unit comprises a motor (4) and an impeller wheel (1) which is also electromagnetically active and in conjunction with electromagnetically active parts (19) of the motor stator (3) generates the torque of the impeller wheel via an air gap (11) formed between radial surfaces of the impeller wheel and the motor stator, the electromagnetically active part of the impeller wheel (1) being a conductive disc (7) which is arranged in a radial plane and which has one radial surface (8) bounding the air gap (11) at the rotor side, and the air gap being bounded at the stator side by planar stator poles (19) formed on a radial bounding surface (12) of an iron cylinder (15) by the provision of radial slots (17) in which the coils (20) are arranged.
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Citations
16 Claims
- 1. A fan unit for generating gas streams, in particular for vacuum cleaners, which unit comprises a motor (4) having a motor axis and an impeller wheel (1) which is also electromagnetically active and in conjunction with electromagnetically active parts (19) of the motor stator (3) generates the torque of the impeller wheel via an air gap (11) extending perpendicular to the motor axis, and formed between surfaces of the impeller wheel (1) and the motor stator (3), wherein the electromagnetically active part of the impeller wheel (1) is a conductive disc (7) which is arranged in a plane extending perpendicular to the motor axis and which has one surface (8) extending perpendicular to the motor axis and bounding the air gap (11) at the rotor side, and at the stator side the air gap is bounded by planar stator poles (19) formed on a radial bounding surface (12) of an iron cylinder (15), extending perpendicular to the motor axis, by the provision of radial slots (17) in which the coils (20) are arranged.
Specification