Patent Application
20050089451
1. Field of the Invention
The present invention relates to a light-catalyst equipped electric fan, more particularly one, which includes a light tube, and a filtering honeycomb having titanium dioxide (TiO2) applied over it so that when the electric fan is powered, the TiO2 will meet ultraviolet light from the light tube to effect chemical reaction of air therewith, which reaction can get rid of bad odor, and decompose detrimental substances in the air.
2. Brief Description of the Prior Art will
When titanium dioxide (TiO2), a light catalyst, meets ultraviolet light, it will be excited by the photons, and effect chemical reaction of air therewith so that detrimental substances in the air are decomposed into non-harmful ones. With such reaction, germs in the air can be killed, unpleasant odor got rid of, and exhaust of cars and factories decomposed to provide fresh and clean air. TiO2 has been applied for such purpose on some kinds of home appliances, e.g. air filters, electric lamps, air conditioners, and electric fans, to improve the quality of air in the environment for the health of people.
Referring to
However, the above light-catalyst equipped electric fan is found to have disadvantages as followings:
It is a main object of the present invention to provide a light-catalyst equipped electric fan to overcome the above disadvantages.
The electric fan of the present invention includes a holding part, a light tube secured to the holding part for producing ultraviolet light, a first motor disposed behind the holding part, a fan blade connected with the first motor, a second motor, a filtering honeycomb having titanium dioxide, a light-catalyst, applied over it, and two joined protecting nets arranged at a front of the electric fan. The filtering honeycomb is disposed between the protecting nets, and stuck on a rear side of a front one of the nets while the front protecting net is connected with an output shaft of the second motor. Thus, when the motors and the light tube are activated, air will pass through the filtering honeycomb, and ultraviolet light will shine on the titanium dioxide. And, the filtering honeycomb alone can be replaced with a new one when the light-catalyst applied over it loses effect after certain length of time of use.
This invention will be better understood by referring to the accompanying drawings, wherein:
Referring to FIGS. 1 to 5, a preferred embodiment of a light-catalyst equipped electric fan in the present invention includes a main body 1, a holding part 2, a seat 3, a light tube 311, and a filtering honeycomb 4.
The holding part 2 is supported on the main body 1, and can be adjusted in position. The holding part 2 has a locating portion 21, which has ribs 212 arranged in a radial pattern. The ribs 212 have screw holes 213 formed thereon. A first motor (not numbered) is secured to a rear side of the locating portion 21, and a fan blade 22 is connected to an output shaft of the first motor. And, a second motor is secured to the locating portion 21 while a rotary output shaft 211 is connected to an output shaft of the second motor to be turned together therewith. Furthermore, a rear protecting net 23 is disposed on the rear side of the holding part 2.
The seat 3 is provided for holding the light tube 311 in position, and is secured to the locating portion 21 of the holding part 2; the seat 3 has an annular concavely curved portion on one side, and several through holes 3, and the light tube 311 is disposed on the annular concavely curved portion, and secured to the seat 3 by means of fasteners 312, which are disposed over the light tube 311, and which are secured to the seat 3 by screws 313 screwed through the fasteners 312, the through holes 31 of the seat 3, and the screw holes 213 of the ribs 212. In other words, the light tube 311 is secured to the locating portion 21 together with the seat 3.
The filtering honeycomb 4 is made of paper, and has titanium dioxide (TiO2) applied over it so as to be used as light catalyst. Protecting nets 24, and 41 are respectively disposed on front and rear sides of the filtering honeycomb 4 to protect the filtering honeycomb 4, and the filtering honeycomb 4 is stuck to the rear side of the front protecting net 24. The front protecting net 24 has an annular trench 241 on the edge of a rear side, and screw holes 242 spaced apart along the annular trench 241 while the inner protecting net 41 has protrusions 411 on the edge of a front side thereof, and through holes 412 between the protrusions 411. The protrusions 411 of the inner protecting net 41 is inserted in the trench 241 of the front protecting net 24, and screws (not numbered) are screwed through the holes 241, 412, and screwed into nuts (not numbered); thus, the filtering honeycomb 4 is protected from getting damaged. In addition, an ornamental cap 25 is secured to a center of the front protecting net 24. The protecting nets 24 and 41 are arranged over the front side of the holding part 2, and the rotary output shaft 211 is connected to the ornamental cap 25 as well as the middle of the protecting net 24 so that the protecting nets 24, 41, and the filtering honeycomb 4 can turn together with the shaft 211 when the second motor is activated.
When the motors and the light tube 311 are activated, air will pass through the filtering honeycomb 4, and ultraviolet light will be emitted from the light tube 311 to shine on the light-catalyst applied over the honeycomb 4, and in turns, air passing through the filtering honeycomb 4 is purified, and germs in the air killed.
From the above description, it can be easily understood that the light-catalyst equipped electric fan of the present invention has advantages as followings:
