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Paramétrages

Paramétrages

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1. WO1997044624 - VENTILATEUR D'EPURATION DE L'AIR

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS :

1. A fan comprising a plurality of radially extending fan blades, wherein at least one fan blade comprises a first surface and a parallel second surface defined by a peripheral edge including side edge segments, the at least one fan blade including at least a cavity open to the first and second surfaces; the fan blade also including a frame defining the at least one cavity, the frame defining a seat comprising a porous support structure covering the cavity, at least one filter unit adapted to be seated in the cavity and supported by the porous support structure such that, as the fan is operated, the filter unit will be in a substantially perpendicular plane to the direction of the airflow created by the fan for more effectively filtering airborne particles from the airflow.

2. The ceiling fan as defined in claim 1, wherein the porous support structure is a structural grid in the form of a screen mounted to the frame.

3. The ceiling fan as defined in claim 1, wherein the cavity extends for the major area of the fan blade and the frame is coincident with the side edge segments, and the at least one filter unit extends throughout the cavity and is co-extensive with the openings of the cavity with the first and second surfaces .

4. A fan as defined in claim 1, wherein the frame defines a seat associated with the cavity for receiving and supporting at least one filter unit, and wherein the fan is a ceiling fan including a rotating hub, and the fan blades are mounted to the rotating hub, and each fan blade has a root portion with a mounting bracket for mounting to the rotating hub, a fan blade body replaceably connected to the root portion of the fan blade, and the fan blade body including the frame defining the cavity.

5. The ceiling fan as defined in claim 4, wherein the blade body includes the blade tip, and the cavity is defined by the frame which is coincident with the side edge segments and the periphery of the tip, and the first surface of the blade is the bottom of the blade with the porous support structure substantially at the level of the bottom.

6. The ceiling fan as defined in claim 4, wherein the root portion of the fan blade and the fan blade body include complementary male and female connecting members for removably connecting the fan body to the root.

7. The fan as defined in claim 1, wherein each fan blade has at least one cavity open to the first and second surfaces of each blade and adapted to receive at least one filter unit in each of the blades.

8. A fan comprising a plurality of radially extending fan blades, wherein at least one fan blade comprises a first surface and a parallel second surface defined by a peripheral edge including side edge segments, the blade including at least a cavity open to the first and second surfaces, at least one filter unit adapted to be seated in the cavity such that, as the fan is operated the filter unit will be in a substantially perpendicular place to the direction of the airflow created by the fan for filtering airborne particles from the airflow, wherein the fan includes a fixed frame and an ion emitter mounted to the fixed frame, whereby airborne particles that become charged passing through the electrically charged field created by the ion emitter on the fixed frame of the fan will be attracted to the fan blades.

9. The fan as defined in claim 8, wherein the ion emitter includes a body portion fixed to the fixed frame and a cap portion defining an annular ion emitting zone, and an annular ion emitter foil having a peripheral series of sharp points sandwiched between the cap portion and the body portion in the ion emitting zone for emitting said ions.

10. The fan as defined in claim 1, wherein the filter unit, when seated in the cavity, is within cross-sectional parameters of the fan blade.

11. A method of air cleaning with a fan including fan blades having first and second parallel surfaces comprising the steps of forming cavities in at least some of the fan blades of the fan, wherein said cavities are open to the first and second surfaces of each fan blade, placing a filter unit in each cavity, supporting the filter unit in the cavity by placing a porous support member to cover the cavity at the first surface, rotating the fan so that the fan blades define a rotating plane substantially perpendicular to the airflow forced by the fan, and whereby a high pressure zone is created on the first surface of the blades and a corresponding low pressure on the second surface thereof such that air will be forced through the filters in the cavities of the fan blades from the first surface through to the second surface of fan blades containing the filters.

12. An ion emitter including a housing and a cap connected to the housing to define an ion emitting zone in a room and an ion emitting foil having a serrated annular edge providing a series of sharp points suitable for emitting ions generated in the ion emitter, means for generating ions and emitting them through the sharp points such that an electrical field can be formed in an open area around said ion emitter, and wherein the cap and housing each have a projecting lip defining a gap defining the ion emitting zone, and the gap having an opening small enough to prevent human fingers from being inserted m the gap and touching the serrated edge of the foil in the so-formed gap.

13. The fan as defined in claim 8, wherein the filter units include electrets and the electrically charged airborne particles will be attracted to the electrets in the filters of the fan blades.

14. The fan as defined in claim 8, wherein the ion emitter includes a body portion fixed to the fixed frame and a cap portion defining an annular ion emitting zone, and an annular ion emitter foil having a peripheral series of sharp points sandwiched between the cap portion and the body portion m the ion emitting zone for emitting said ions.

15. A filter unit for use in a cavity of a fan blade of a fan, the fan blade having a root, tip and side edges and the cavity extending for the full extent of the blade with cavity margins being defined by a root portion of the blade, a tip portion of the blade, and side frame members, the filter unit including a disposable container and filter material within the container, the container including side portions adapted to cooperate with the side frame members of the fan blade, the container further including a root end portion and a tip end portion, the tip end portion having an extension tapering to a narrow edge and the tip portion of the blade including a slot for receiving the narrow edge of the tip extension of the container.