Title:
Insect proof wind generating device
Kind Code:
A1


Abstract:
An insect proof wind generating device comprises a body having an wind inlet and a wind outlet; a wind driver being installed within the body; the actuation of the wind driver being controlled by a circuit board; the circuit board being connected to a magnetic sensor; the magnetic sensor serving for detecting the opening and closing of a door or a window. When it is determined that the door or window is opened, the magnetic sensor will actuate wind generating device to blow wind. The wind driver includes a motor electrically connected to the circuit board and at least on fan driven by the motor. The circuit board is installed with a voltage reduction protection unit for reducing a voltage reduction protection unit for reducing a high voltage to a low voltage suitable for the magnetic sensor. The voltage reduction protection unit is installed on the circuit board;



Inventors:
Chen, Chih-feng (Taichung, CN)
Application Number:
11/473212
Publication Date:
12/27/2007
Filing Date:
06/23/2006
Primary Class:
International Classes:
F24F9/00
View Patent Images:
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Primary Examiner:
BOLES, DEREK
Attorney, Agent or Firm:
Chih-Feng Chen (Taipei, TW)
Claims:
What is claimed is:

1. An insect proof wind generating device comprising: a body having an wind inlet and a wind outlet; a wind driver being installed within the body; the actuation of the wind driver being controlled by a circuit board; the circuit board being connected to a magnetic sensor; the magnetic sensor serving for detecting the opening and closing of a door or a window; when it is determined that the door or window is opened, the magnetic sensor will actuate wind generating device to blow wind.

2. The insect proof wind generating device as claimed in claim 1, wherein the wind driver includes a motor electrically connected to the circuit board and a fan driven by the motor.

3. The insect proof wind generating device as claimed in claim 1, wherein the circuit board is installed with a voltage reduction protection unit for reducing a high voltage to a low voltage suitable for the magnetic sensor.

4. The insect proof wind generating device as claimed in claim 3, wherein the voltage reduction protection unit is installed on the circuit board; the voltage reduction protection unit has a power input unit serves for providing AC current; the current then flows to a rectifier voltage regulating unit for voltage stability; then an SSR circuit is used to rectify the current synchronously so as to descend the voltage to a smaller current which is then inputted to a magnetic driving logic unit; once the magnetic reed switch actuates, the magnetic driving logic unit serves to return sensing signals to the SSR circuit; then the SSR circuit will control the wind driver to generate wind; the voltage reduction protection unit has the effect of protecting the magnetic reed switch from burning.

5. The insect proof wind generating device as claimed in claim 1, wherein the magnetic sensor is one of a magnetic reed switch or an electromagnetic valve.

Description:

FIELD OF THE INVENTION

The present invention relates to insect proof devices, and in particular to an insect proof wind generating device which is easily assembled with lower cost and high safety. Thereby the voltage of the magnetic sensor is controlled not to overload so that the magnetic sensor is protected from burning.

BACKGROUND OF THE INVENTION

There are many prior art way for mosquito proof, such as installing screen windows or screen doors, using burning mosquito coil incense, spraying pesticide, etc. However in opening windows or doors, the screens cannot prevent the mosquito from flying indoors. The mosquito coil incense, and pesticide are harmful to human bodies.

Furthermore, in many public places, the above mentioned ways can not be used. Thereby there is an eager demand for a novel design which can improve the defect in the prior art.

SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to provide an insect proof wind generating device which is easily assembled with lower cost and high safety. A voltage of a magnetic sensor is controlled not to overload so that the magnetic sensor is protected from burning.

To achieve above objects, the present invention provides a wind generating device which comprises a body having an wind inlet and a wind outlet; a wind driver being installed within the body; the actuation of the wind driver being controlled by a circuit board; the circuit board being connected to a magnetic sensor; the magnetic sensor serving for detecting the opening and closing of a door or a window; when it is determined that the door or window is opened, the magnetic sensor will actuate wind generating device to blow wind. The wind driver includes a motor electrically connected to the circuit board and at least on fan which is driven by the motor. The circuit board is installed with a voltage reduction protection unit for reducing a voltage reduction protection unit for reducing a voltage to a value suitable for the magnetic sensor.

The voltage reduction protection unit is installed on the circuit board; the voltage reduction protection unit has the following elements; a power input unit serves for providing AC current; the current then flows to a rectifier voltage regulating unit for voltage stability; then a SSR circuit is used to rectify the current synchronously so as to descend the voltage to a smaller current which is then inputted to a magnetic driving logic unit; once the magnetic reed switch actuates, the magnetic driving logic unit serves to return sensing signals to the SSR circuit; then the SSR circuit will control the wind driver to generate wind; the voltage reduction protection unit actually has the effect of protecting the magnetic reed switch from burning. The wind generating device as claimed in claim 1, wherein the magnetic sensor is one of a magnetic reed switch or an electromagnetic valve.

The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.

The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded schematic view of the wind generating device of the present invention.

FIG. 2 shows the application of the wind generating device of the present invention, wherein the wind generating device is combined with a pullable door.

FIG. 3 shows the application of the wind generating device of the present invention, wherein the wind generating device is combined with a pivotal door.

FIG. 4 is a schematic cross sectional view of the wind generating device of the present invention.

FIG. 5 shows the structure of the voltage reduction protection unit of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

In order that those skilled in the art can further understand the present invention, a description will be described in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims. Referring to FIG. 1, the wind generating device 1 of the present invention is illustrated. The present invention has the following elements.

A body 10 has for example a long structure. However this do not confine the scope of the present invention.

One end of the body 10 has a wind inlet 11 and another end thereof has a wind outlet 12. The wind outlet 12 serves for draining wind from a wind driver in the body 10.

A wind driver is a motor and two fans 22 (the number of fans are not confined in the present invention). The motor 21 is connected to the fans 22 through a spindle. When the motor 21 operates, the fans 22 will be driven so as to generate wind. The wind flows to the wind outlet 12 of the body 10 so as to form as an air wall.

A control device includes a circuit board 31 which is electrically connected to a magnetic sensor, such as a magnetic reed switch 40 or an electromagnetic valve. The circuit board 31 will actuate the magnetic reed switch 40 so as to actuate the motor 21.

The wind generating device of the present invention uses high voltage AC current. To prevent the magnetic reed switch 40 to be burned due to over heat or over current induced from the high voltage. A voltage reduction protection unit is used to protect the magnetic reed switch 40. Thereby the voltage of 110V or 220V inputted to the wind generating device 1 will descend to a voltage suitable for the magnetic reed switch 40 so as to protect the magnetic reed switch 40.

In use, referring to FIGS. 2 to 4, the wind-generating device 1 is installed at a top of a door, such as a pullable door 50 or a pivotal door 60. The magnetic reed switch 40 will be actuated. Then the circuit board 31 will control the motor 21 to drive the fans 22 to rotate. Thus wind generates. Then the wind flows out from the wind outlet 12 of the body 10 to the window or door so as to be formed as a wind wall for preventing the mosquito to flow indoors. The voltage reduction protection unit serves to descend a high voltage into a low voltage suitable for the magnetic reed switch 40 so as to protect the magnetic reed switch 40.

Referring to FIG. 5, the voltage reduction protection unit is illustrated. The voltage reduction protection unit is installed on the circuit board 31. The voltage reduction protection unit has the following elements. A power input unit 51 serves for providing AC current. The current then flows to a rectifier voltage regulating unit 52 for voltage stability. Then an SSR circuit 53 is used to rectify the current synchronously so as to descend the voltage from 110V to 220V to a smaller current which is then inputted to a magnetic driving logic unit 54. Once the magnetic reed switch 40 actuates, the magnetic driving logic unit 54 serves to return sensing signals to the SSR circuit 53. Then the SSR circuit 53 will control the wind driver 55 to generate wind. The voltage reduction protection unit actually has the effect of protecting the magnetic reed switch 40 from burning.

The wind generating device 1 with the magnetic reed switch 40 is used to detect the actuation of the device. This is because the magnetic reed switch 40 has preferred sensitivity. The wind generating device 1 can blow wind.

Even a gap as smaller as 0.1 to 0.3 mm between the door (or window) and the wall, the wind generating device 1 can generate wind to prevent the mosquito from flowing indoors.

Otherwise, the magnetic reed switch 40 can prevent current to flow out. Moreover, the magnetic reed switch 40 is cheap and is easy to be assembled.

The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.