AIRFLOW SYSTEM AND APPARATUS AND METHOD FOR AIRFLOW SYSTEM
First Claim
1. An airflow system adapted to enhance airflow in a hand-drying apparatus which expels a stream of substantially sterilised, hot air that is heated by a heating-means for drying of hands, where the airflow inside the apparatus is decelerated by one or more filters through which the airflow passes,wherein the system, downstream of the heating-means, is provided with an airflow-pathway that is progressively smaller along its pathway in respect of flowthrough cross-section,such that, in use, the airflow is enhanced by flowing initially through a larger part of the airflow-pathway,and subsequently through a smaller part of the airflow-pathway after which the airflow exits the apparatus.
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Abstract
An airflow system enhances airflow in a hand-drying apparatus which expels a stream of sterilised, hot air for drying of hands. Inside the apparatus, the airflow is decelerated by one or more filters. Therefore, the system is provided with an airflow-pathway that is progressively smaller along its pathway in respect of flowthrough cross-section. The airflow is enhanced by flowing initially through a larger part of the airflow-pathway, and subsequently through a smaller part of the airflow-pathway after which the airflow exits the apparatus. To enhance the airflow, a universal commutator motor is used to drive an appliance that provides air movement. The motor comprises magnetic field generating means, a rotating armature adapted for rotational motion in operative association with the magnetic field. A ratio of magnetic field strength at the armature to the magnetic field strength within the magnetic field is less than about 1 to 1.
18 Citations
37 Claims
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1. An airflow system adapted to enhance airflow in a hand-drying apparatus which expels a stream of substantially sterilised, hot air that is heated by a heating-means for drying of hands, where the airflow inside the apparatus is decelerated by one or more filters through which the airflow passes,
wherein the system, downstream of the heating-means, is provided with an airflow-pathway that is progressively smaller along its pathway in respect of flowthrough cross-section, such that, in use, the airflow is enhanced by flowing initially through a larger part of the airflow-pathway, and subsequently through a smaller part of the airflow-pathway after which the airflow exits the apparatus.
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13. A method of enhancing airflow through a hand-drying apparatus that expels a stream of substantially sterilised, hot air that is heated by a heating-means for drying of hands, where the airflow inside the apparatus is decelerated by one or more filters through which the airflow passes,
wherein the method includes providing the apparatus with an airflow system which, downstream of the heating-means, includes an airflow-pathway that is progressively smaller along its pathway in respect of flowthrough cross-section, and, in use, enhancing the airflow by causing the airflow to flow initially through a larger part of the airflow-pathway, and subsequently through a smaller part of the airflow-pathway after which the airflow exits the apparatus.
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14. (canceled)
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15. A hand-drying apparatus airflow system adapted to enhance airflow in an apparatus that expels a stream of substantially sterilised, hot air that is heated by a heating-means for drying of hands, where the airflow inside the apparatus is decelerated by one or more filters through which the airflow passes,
wherein the hand-drying apparatus comprises a completely sealed apparatus-housing that includes therein a fan-casing containing a fan, wherein the fan is a dual-fan comprising two fan-halves each of which is adapted to draw in airflow into the fan-casing.
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16-34. -34. (canceled)
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35. An airflow system adapted to enhance airflow in a hand-drying apparatus which expels a stream of substantially sterilised, hot air that is heated by a heating-means for drying of hands, where the airflow inside the apparatus is decelerated by one or more filters through which the airflow passes,
wherein the system is provided with an airflow-pathway that is progressively smaller along its pathway in respect of flowthrough cross-section, such that, in use, the airflow is enhanced by flowing initially through a larger part of the airflow-pathway, and subsequently through a smaller part of the airflow-pathway after which the airflow exits the apparatus.
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37-38. -38. (canceled)
Specification