FAN GRILL FOR A MOSQUITO TRAP
A fan grill for a mosquito trap is a board and has a center, a funnel-shaped shell, multiple air holes and a through hole. The shell is formed downward in the center and is tapered off to a bottom. The air holes are respectively formed through the shell and are arranged radially and spirally. The through hole is formed on the bottom of the shell. The radial and spiral air holes are designed according to direction of airflow created by a fan so allow the airflow to pass smoothly therethrough and to generate steady suction forces. Besides, hole diameters of the air holes are less than sizes of mosquitoes so trapped mosquitoes are prevented from escaping from between fan blades of the fan. Therefore, trapping efficiency is enhanced.
1. Field of the Invention
The present invention relates to a mosquito trap, and more particularly to a fan grill for a mosquito trap that can prevent trapped mosquitoes from escaping and allow airflow to pass smoothly therethrough.
2. Description of the Prior Arts
Mosquito traps are used to attract, trap and kill mosquitoes. With reference to
When the mosquito trap is actuated, the photocatalytic lamp tube 53 is lighted and the fan 51 generates negative-pressure suction forces between the mounting bracket 50 and the cover 52. The photocatalytic lamp tube 53 produces carbon dioxide, UV light and heats up close to human body temperature to lure mosquitoes. The mosquitoes are then drawn into the mosquito collection box 40 by suction of the fan 51 and are dried out and die. Therefore, a quiet and safe trapping effect is achieved.
With further reference to
With reference to
To overcome the shortcomings, the present invention provides a fan grill for a mosquito trap to mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTIONThe main object of the present invention is to provide a fan grill for a mosquito trap that allows airflow to pass smoothly therethrough and prevents trapped mosquitoes from escaping.
To achieve the foregoing objective, the fan grill for a mosquito trap in accordance with the present invention is a board and comprises a center, a funnel-shaped shell, multiple air holes and a through hole. The shell is formed downward in the center and is tapered off to a bottom. The air holes are respectively formed through the shell and are arranged radially and spirally. The through hole is formed on the bottom of the shell. The radial and spiral air holes are designed according to direction of airflow created by a fan so allow the airflow to pass smoothly therethrough and to generate steady suction forces. Besides, hole diameters of the air holes are less than sizes of mosquitoes so trapped mosquitoes are prevented from escaping from between fan blades of the fan. Therefore, trapping efficiency is enhanced.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
With reference to
When the mosquito trap is actuated, the photocatalytic lamp tube 33 is lighted and the fan 31 generates negative-pressure suction forces between the mounting bracket 30 and the cover 32. The photocatalytic lamp tube 33 produces carbon dioxide, UV light and heats up close to human body temperature to lure mosquitoes. The mosquitoes are then drawn into the mosquito collection box 20 by suction of the fan 31 and are dried out and die. The radial and spiral air holes 111 are designed according to direction of airflow created by the fan 31 so allow the airflow to pass smoothly therethrough and to generate steady suction forces. Besides, hole diameters of the air holes 111 are less than sizes of mosquitoes so trapped mosquitoes are prevented from escaping from between fan blades of the fan 31. Therefore, trapping efficiency is enhanced.
With reference to
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims
1. A fan grill being a board and comprising:
- a center;
- a funnel-shaped shell formed downward in the center and tapered off to a bottom;
- multiple air holes respectively formed through the shell and arranged radially and spirally; and
- a through hole formed on the bottom of the shell.
2. The fan grill as claimed in claim 1 further comprising a tube formed on and protruding from the bottom of the shell and including the through hole.
3. The fan grill as claimed in claim 1 being a rectangular board and further comprising four fastening holes respectively formed through four corners of the board.
4. The fan grill as claimed in claim 2 being a rectangular board and further comprising four fastening holes respectively formed through four corners of the board.
5. The fan grill as claimed in claim 1 further comprising
- a curved side;
- three flat sides;
- two positioning wings respectively formed on and protruding from the opposite flat sides; and
- a locking segment formed to protrude downward from the other flat side and having a locking hole.
6. The fan grill as claimed in claim 2 further comprising
- a curved side;
- three flat sides;
- two positioning wings respectively formed on and protruding from the opposite flat sides; and
- a locking segment formed to protrude downward from the other flat side and having a locking hole.
Type: Application
Filed: Sep 14, 2011
Publication Date: Mar 14, 2013
Inventor: Yi-Yi TSAI (New Taipei City)
Application Number: 13/232,734
International Classification: F01D 25/00 (20060101);