Fan for an automatic dispensing device

A fan 1 for an automatic dispensing device, the fan comprising a drive circuit 6, an electromagnet 8 having at least one electromagnetic coil, the electromagnetic coil connected to the drive circuit, a rotor 3 for generating the airflow, and at least four magnets 14a, 14b, 14c, 14d, 14e, 14f, 14g, 1...

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Bibliographische Detailangaben
Hauptverfasser:	Lavis Du, Dan Ibbitson, Chaoqin Guo, Akira Naidu, Charles Yao, Jake Stephen Williams
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUSPLANTS BLASTING CATCHING, TRAPPING OR SCARING OF ANIMALS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DYNAMO-ELECTRIC MACHINES ELECTRICITY FISHING FORESTRY GENERATION HEATING HUMAN NECESSITIES HUNTING HYGIENE LIGHTING MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS TRAPPING WEAPONS
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Beschreibung
Zusammenfassung:	A fan 1 for an automatic dispensing device, the fan comprising a drive circuit 6, an electromagnet 8 having at least one electromagnetic coil, the electromagnetic coil connected to the drive circuit, a rotor 3 for generating the airflow, and at least four magnets 14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h arranged on a circle 18 on the rotor and spaced apart by the same angle (alpha), wherein the electromagnet is arranged above or under the circle of the rotor and attracts or repels the magnets and the drive circuit switches a current direction in the electromagnetic coil to sequentially attract and repel each magnet as the rotor rotates, where the fan further comprises a magnetic element 16 arranged above or under the rotor such that the magnetic element attracts one of the magnets to its position when the electromagnetic coil is not powered and the rotor is not rotating or gradually coming to a halt, wherein none of the other magnets assumes a position directly under or above the electromagnet when the rotor comes to a halt.