JPH0311637Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to an assembly type household ventilation fan cover that is excellent in disposal.

<Conventional technology> Ventilation fans discharge dirty air from indoors to the outdoors, so when the air passes through, it generates oil smoke, smoke, etc.
As a matter of course, cigarette tar and other substances adhered thereto, making cleaning this extremely difficult.

One possible solution to this problem is to spray a certain resin onto the ventilation fan and cure it to form a thin film, but this method has the disadvantage that it takes time and effort to peel off during cleaning. In particular, the blades and motor parts have complex structures, so it was difficult to spray the resin on them, and it was even more difficult to peel them off, and the thin film could even impede operation.

In addition, for the purpose of preventing the above-mentioned contamination, covers with filters made of aluminum have been popularized because they are lightweight.

However, the main body of this cover, which supports the filter, is made of a thin aluminum plate and is made of a non-combustible material, making it difficult to dispose of and becoming a source of pollution when disposing of household waste. Even so, the impact on the combustion hearth is significant, and aluminum oxide ash scatters, causing dust pollution.

<Problems to be solved by the invention> That is, although the method of covering the entire intake part of a plastic ventilation fan with an aluminum cover and a nonflammable filter is simple and reliable,
There were disadvantages and inconveniences such as problems with disposal and high cost.

<Means for solving the problem> The present invention is a ventilation fan cover devised to solve the above-mentioned conventional drawbacks and inconveniences. A frame made of paperboard with flame retardant treatment, in which large-diameter holes are drilled, the leg pieces are pasted on the indoor wall by covering the indoor side of the ventilation fan with the holes facing the blades of the ventilation fan. and a flame-retardant treated and highly breathable filter that is attached to the frame with the hole closed.

<Examples> Examples of the present invention will be described below based on the drawings.

The ventilation fan cover of the present invention is composed of a frame 1 made of paperboard treated with flame retardant treatment, and a filter 8 which is also treated with flame retardant treatment and has high air permeability and a large air contact area.

First, the frame 1 is a thin, lightweight, and flat product before being assembled, and many can be stacked on top of each other during storage.

The frame 1 is further composed of a main body part 2 and a peripheral end part 3, and the main body part 2 has a rectangular plate shape that is slightly larger than the planar shape of a normal ventilation fan. A large-diameter hole 6 having a diameter approximately equal to the diameter of the blade portion is formed, and a plurality of reinforcing ribs 7 are successively provided toward the center of the hole 6.

Further, the peripheral end portion 3 extending laterally by a predetermined length from each of the four sides of the main body portion 2 has three bending lines 5 provided in parallel along the sides of the main body portion 2 at equal intervals. from the main body 2 side to the first surface 3.
It is divided into a, second surface 3b, third surface 3c, and fourth surface 3d.

A filter 8 for closing the hole 6 described above is attached to the main body 2.

Frame 1 and filter 8 here are treated with flame retardant treatment, but this is done in consideration of the fact that the ventilation fan is placed near a fire such as a stove, so even if flames get close, No ignition, that is, no flames,
This is to ensure self-extinguishing properties and prevent fires by simply turning black or turning into ash.

In the above-mentioned configuration, by bending each of the bending lines 5 to the back side of the frame 1, the peripheral end portion 3 is rolled up and the leg piece 4 is provided around the frame 1. 3, first side 3a, second side 3
b, the third surface 3c, and the fourth surface 3d are connected at right angles to each other, so the leg piece 4 has a hollow regular square tube shape, and the first surface 3a is the outer surface, and the fourth surface 3d is a right angle. The second surface 3b is the bottom surface, the third surface 3c is the inner surface, and the fourth surface 3d
is the bonding surface.

That is, the fourth surface 3d faces the peripheral edge of the back surface of the main body 2 in the above-described bent state, and therefore, a predetermined adhesive tape is applied to the fourth surface 3d facing the back surface of the main body 2. By applying such a coating, the shape of the leg piece 4 described above will be maintained by joining with the peripheral edge of the back surface of the main body part 2.

In addition, the height and width of the leg piece 4, that is, the width of the first surface 3a, is slightly larger than the height of the protrusion into the room of a normal ventilation fan, and therefore the second By attaching the surface 3b to the indoor wall surface, the frame 1 can cover the indoor side of the ventilation fan.

In this case, if the adhesive tape as described above is placed on the second surface 3b facing the indoor wall, the state of coverage of the indoor side of the ventilation fan by the frame 1 will be improved by joining with the indoor wall. maintained.

Note that the adhesive tape on the fourth surface 3d or the second surface 3b is protected by a predetermined protective sheet affixed thereto before use.

Now, since the ventilation fan cover of the present invention has the above-mentioned configuration, many can be stacked in a flat state with the filter 8 attached to the frame 1 and stored before they are used. When in use, the frame 1 can be easily assembled by bending the peripheral end 3 and pasting the fourth surface 3d to form the leg piece 4. Furthermore, the frame 1 can be placed on the indoor side of the ventilation fan. By attaching the second surface 3b to an indoor wall surface, it can be easily attached.

If the filter 8 becomes particularly contaminated through use, it can be easily removed by peeling off the second surface 3b from the indoor wall, and it can be disposed of as combustible garbage in the home. This means that it can be disposed of.

Although the embodiments of the present invention shown in the drawings have been described above, the present invention is not limited to the embodiments described above, and may be implemented in any manner as long as the configuration described in the claims for utility model registration is not changed. can.

<Effects of the invention> In summary, according to the invention, since it is in the form of a thin plate before use, it does not take up much storage space, is easy to assemble, install, and remove, and is easy to dispose of. It is safe because it is nonflammable, does not reduce ventilation efficiency, ensures removal of oil smoke, etc., is lightweight and convenient to handle, and there is no risk of it falling off when installed. It has a simple structure and is easy to mold, so it can be obtained at a low cost, and has many excellent effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an exploded view of the ventilation fan cover of the present invention, FIG. 2 is an assembled perspective view, and FIG. 3 is a cross-sectional view. Explanation of the symbols: 1 is a frame, 2 is a main body, 3 is a peripheral end, 4 is a leg piece, 5 is a folding line, 6 is a hole, 7 is a reinforcing rib, and 8 is a filter.

Claims (1)

[Scope of utility model registration request] Wrap around the edges of the four sides, provide leg pieces around the periphery, make a large diameter hole in the center, make the hole face the blade of the ventilation fan, cover the indoor side of the ventilation fan, and attach the above to the indoor wall surface. A ventilation fan consisting of a flame-retardant paperboard frame to which leg pieces are attached, and a flame-retardant and highly breathable filter that is attached to the frame with the holes closed. cover.