JPH0216210Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a simple assembly ventilation fan hood, and more specifically, to a disposable type simple hood for ventilation fans installed in kitchens, cooking areas, etc.

[Conventional technology]

In order to improve the efficiency of the exhaust action of the ventilation fan and to prevent the upper part of the frame of the ventilation fan from getting dirty, a hood that covers the upper part of the ventilation fan and opens downward has been widely used. Conventional hoods of this type are usually formed by molding metal or plastic plates, and are attached to the upper part of the outer periphery of the ventilation fan using screws, making them extremely difficult to remove. This makes cleaning work extremely troublesome when it becomes dirty due to oil smoke.

Conventionally, in order to eliminate such inconveniences, as disclosed in, for example, Japanese Utility Model Application Publication No. 118316/1983, rectangular shapes were made using suitable bendable non-combustible plate materials such as thin aluminum plates. A vertically elongated substantially trapezoidal side piece is connected to the left and right ends of the cover through a fold, and a horizontally long rectangular upper piece is connected to the upper end through a fold. By bending the top piece at right angles to the rear of the cover along the respective folds and attaching it to the front of the ventilation fan by appropriate means, an opening is formed at the lower end surrounded by the cover, the side pieces, and the mounting wall of the ventilation fan. At the same time, the cover piece is tilted upward and backward, and the top surface is covered by the top piece, so it is foldable and easy to assemble, and when it gets dirty, it can be replaced as a disposable hood. Are known.

[The problem that the idea aims to solve]

However, in the case of the prior art with the above configuration, both side pieces are formed in a vertically elongated trapezoidal shape, and in the assembled state, the cover piece is only slightly inclined with respect to the opening, and the opening also covers the entire top surface of the microwave. Because it is difficult to make it large enough to face the hood, when a large amount of oil smoke is generated from the food being cooked on the microwave, a considerable amount of oil smoke cannot be guided into the hood. As a result, there is a problem that not only is oily smoke floating in the room, but also that the surface of the hood is quickly contaminated by the oily smoke.

It seems that these problems can be solved by increasing the inclination angle of the cover and expanding the depth of the opening, but if the inclination angle of the cover is set large, the airflow of oil smoke caused by the suction of the ventilation fan will increase. When it enters the hood, it immediately hits the sloped inner surface of the cover and its direction is changed, so the turbulence of the airflow caused by this change in direction causes some of the oil smoke that once entered the hood to flow outside of the hood. This causes the inconvenience of going backwards.

In addition, when assembling the hood three-dimensionally and attaching it to a ventilation fan, the upper edge of the side piece and the left and right edges of the upper piece can only be joined by abutting each other at right angles, so there is a slit-like shape between both edges. A gap is created. As a result, outside air is sucked in through the gap, which of course reduces the suction power of the ventilation fan, and the oily smoke sucked in through the gap adheres to both the inside and outside of the gap, causing the inside and outside of the hood to be damaged. Not only does it become dirty and unsightly, it is also undesirable from a sanitary standpoint.
Furthermore, if the hood becomes more contaminated, there is a risk that the attached oil droplets may even trickle down the side wall of the hood and drip from the lower end opening.

The present invention was developed to solve these problems.It can be sold in a folded state at stores, and it is an inexpensive and easy-to-install hood that can be assembled into a three-dimensional hood shape for ventilation fans. Although it is a disposable type hood, it has excellent suction ability for oil smoke, and when assembled, there is no gap at each fold line, and there is no gap at the folded part of the circumferential side. According to
The purpose of the present invention is to provide a simple assembly ventilation fan hood that can prevent early soiling and can be used hygienically.

[Means to solve the problem]

In order to achieve the above object, the present invention provides at least the back side of an aluminum sheet or cardboard having a thickness such that it can be bent along pre-formed crease lines with a slight force, as shown in the drawings of the embodiment. It is made of a paper sheet on which a thin aluminum foil is pasted or an aluminum evaporated layer is formed, and a horizontally long rectangular horizontal upper surface part ₃ is connected to the upper side of the substantially rectangular inclined front part 1 via a fold line a2. A horizontally long rectangular suction guiding eaves 4 is provided below the inclined front part 1 via a fold line a ₃ , and fold lines a ₁ and a ₁ are provided on both sides of the inclined front part 1 . Approximately isosceles triangular side portions 2, 2 are connected via the
Further, between the upper end portions of the side surfaces 2, 2 and the horizontal upper surface portion 3, upper folding pieces 5, 5 each having an isosceles triangular shape are provided with fold lines a ₄ , a ₆ , a ₄ , a ₆ . The fold lines b ₁ and b ₁ are formed in the center between the fold lines a ₄ , a ₆ , _{a 4 ,} and a 6 of the upper folding pieces 5 , 5 . ₁ and b ₁ to maintain the shape of the upper folding pieces 5, 5 in a folded state, and between the side surfaces 2, 2 and the suction guiding eaves 4, there are respective isosceles triangular lower sides. Folding piece 6,
6 are connected to each other via fold lines a ₅ , a ₇ , a ₅ , a ₇ , and the fold lines a ₅ , a ₇ ,
Forming fold lines b ₂ and b ₂ in the center between a 5 and a ₇ , and forming the hood main body 7 by folding and expanding the lower folding pieces 6 _and 6 from the fold lines b ₂ and b ₂ , Furthermore, the hood main body 7 is characterized in that an optional fastening device 8 is provided at the end of the hood main body 7 on the ventilation fan side.

[Effect]

In the present invention, with the above configuration, the inclined front part 1 disposed opposite to the ventilation fan is inclined at a sufficient angle with respect to the direction in which oil smoke rises, thereby increasing the depth of the lower end opening. Even if a ventilation fan is used to induce suction of oil smoke over a wide area,
The oil smoke that has been sucked into the ventilation fan and reached the opening is not immediately changed in its suction direction by the inclined front part 1, but is first guided in a natural state as an upward air current by the suction guiding eaves part 4, After that, since the direction is changed at the inclined front part 1, it is possible to prevent the occurrence of large airflow turbulence due to the change in direction, and a part of the oil smoke that once entered the hood main body 7 returns to the outside of the hood. This inconvenience does not occur.

Further, when the amount of oil smoke generated is at a normal level, the oil smoke can be sufficiently sucked in the normal state in which the side folding pieces 6, 6 are folded between the side parts 2, 2 and the suction guiding eaves part 4. On the other hand, when a large amount of oil smoke is generated, by stretching the lower folding pieces 6, 6, the lower end opening formed by the side surfaces 2, 2 and the suction guiding eaves 4 can be opened. expands to increase the ability to suck in oil smoke, so the width of the lower end opening can be arbitrarily adjusted in accordance with the amount of oil smoke generated.

There is a fold line b ₁ between the horizontal upper surface portion 3 and the side surface portions 2, 2.
Since the upper folding pieces 5, 5 folded in by b ₂ are interposed, there is no gap in any part of the hood main body 7, and therefore, the suction power of the ventilation fan may be reduced, and oil smoke may be trapped in the gap. There will be no inconvenience caused by accumulation and sagging.

Furthermore, since the inclined front part 1, the side parts 2, 2, the horizontal upper part 3, the suction guiding eaves part 4, and the upper and lower folding pieces 5, 6 are all integrally formed without any breaks, it has excellent strength. It becomes something.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Fig. 1 is a perspective view of the hood of the present invention, and Fig. 2 is a developed view, in which 1 is an inclined front part, 2 is a side part, 3 is a horizontal upper part, and 4 is an eaves for guiding suction. A horizontal upper surface portion 3 having a horizontally long rectangular shape is connected to the upper side of an inclined front surface portion 1 having a substantially rectangular shape, preferably a trapezoidal shape slightly expanding toward the bottom, via a mountain fold line _a2 , The inclined front part 1
A horizontally long rectangular suction guiding eaves section 4 is connected to the lower side of the slanted front section 1 via a mountain fold line a ₃ , and a side surface section 2 is connected to both sides of the inclined front section 1 via a mountain fold line a ₁ , a ₁ . , 2 are arranged in series.

Each of the side surfaces 2 has an approximately isosceles triangular shape, specifically, the rear side 2a and the base 2b are perpendicular to each other, and the sloped side 2c continuous to the sloped front side 1 is the same as the rear side 2a and the base 2.
The shape is inclined at an angle of approximately 45 degrees with respect to b, and furthermore, the front side 2d connected to the suction guiding eaves part 4 is approximately parallel to the rear side 2a, that is, the lower end of the trapezoidal part widens at the end and has a horizontally elongated rectangle. It is formed into a deformed pentagonal shape with consecutive parts.

Also, between the upper end portions of the side surfaces 2, 2 and the horizontal upper surface portion 3, there are rear sides 2a of the side surfaces 2, respectively.
and the upper side 2e of the side surface 2.
and the side sides 3a of the horizontal upper surface part 3. Upper folding pieces 5, 5 in an isosceles triangular shape are connected to each other via mountain fold lines _a4 , _a6 , _a4 , _a6 . . A valley fold line b ₁ is formed in the center between the mountain fold lines a ₄ and a ₆ of the upper folded piece portion 5 . As shown in FIG. 3, the upper folding piece 5 is folded in half along this valley fold line b ₁ to maintain its shape, so that the horizontal upper surface 3 is bent almost at right angles to both side surfaces 2, 2. It will be done.

Further, between the side surfaces 2, 2 and the suction guidance eaves section 4, there are respectively a front side 2d of the side surface 2, a side edge 4a of the suction guidance eaves section 4, and these side surfaces 2,
2 _and the bottom side 6a connecting the lower end corners _of the suction guiding eaves _part 4 _. They are arranged in series. A valley fold line b ₂ is formed in the center between the mountain fold lines a ₅ and a ₇ of the lower folded piece portion 6 .

The lower folding piece 6 can be folded and expanded from this valley fold line b ₂ , so that when the lower folding pieces 6 are folded, the eaves portion 4
and the lower ends of the side parts 2, 2 are in the normal position,
The lower end opening formed by the eaves part 4 and the side parts 2, 2 also maintains the normal opening area, but when the lower folding pieces 6, 6 are extended, the eaves part 4 and the side parts 2, 2, The lower end of 2 expands outward, and the lower end opening also expands greatly, making it possible to suck in oil smoke over a wider area.

In this manner, the hood main body 7 is assembled by folding the side parts 2, 2, the horizontal upper surface part 3, and the suction guiding eaves part 4 around the inclined front part 1 along the fold line. Optional fasteners 8, 8 are attached to the end of the hood main body 7 on the ventilation fan side.

The above-mentioned hood main body 7 is made of an aluminum sheet having a thickness that can be bent with a slight force along pre-formed mountain fold lines and valley fold lines, or the back side or front side of a slightly thick paper. A paper sheet with a thin aluminum foil pasted on the back side, and a paper sheet with an aluminum vapor deposition layer formed on the back side or both the front and back sides is suitable.In particular, a paper sheet with a thin aluminum foil pasted on the cardboard or an aluminum vapor deposition layer on the front and back sides is suitable. It is preferable to apply, and
The surface may be colored in a variety of colors, and as shown in FIG. 2, it is preferable that the entire surface be made of one piece of material.

Note that the upper and lower folded pieces 5 and 6, which are folded in half along the valley fold lines b ₁ and b ₂ , can be sufficiently held by the shape-retaining ability of the material itself if the folding is done securely.

Furthermore, as a fastener 8 for attaching the hood main body 7 to the ventilation fan side, as shown in FIG. As shown in FIG. 1, the coil loop 10 is attached to the hood main body 7 side, and the coil spring 11 is attached when attached to the ventilation fan. It can be easily attached to a desired position by extending it and hooking the hook 12 at the tip to a suitable position on the ventilation fan frame.

[Effect of idea]

As explained above, when using the simple assembly ventilation fan hood of the present invention, an aluminum sheet with a thickness that can be bent with a slight force along pre-formed crease lines, or a thin aluminum sheet on at least the back side of cardboard. Since it is made of a paper sheet to which foil is attached or an aluminum vapor-deposited layer is formed, the material cost is low and manufacturing is extremely easy.

In addition, the inclined front part 1, both side parts 2, 2, horizontal upper part 3, suction guiding eaves part 4, and upper and lower folding pieces 5, 5, 6, 6 are arranged along fold lines _a1 to _a7 and _b1 , respectively.
Since they are integrally connected via b ₂ , they not only have excellent strength, but also when punching the sheet material described above into the shape shown in Fig. 2,
It can be easily manufactured by forming the crease lines a ₁ to a ₇ and b ₁ , b _{2 ,} and after forming, as shown in FIG. Since it can be stacked on the front part 1, the main body 7 of the hood can be flattened, allowing the product not only to be transported and handled, but also to be displayed at a store without taking up too much space, and also convenient for buyers to take home. becomes.

Furthermore, since a horizontally elongated rectangular suction guiding eaves 4 is provided below the inclined front part 1 via the fold line, oil smoke can be sucked and guided as much as possible. The installed inclined front part 1 is inclined at a sufficient inclination angle with respect to the direction in which oil smoke rises, so that the depth of the lower end opening is set large, so that oil smoke can be guided and sucked into the ventilation fan over a wider range. However, the oil smoke that is sucked into the ventilation fan and reaches the opening is not immediately redirected to its suction direction by the inclined front part 1, but is first drawn into a natural state as an upward airflow by the suction guiding eaves part 4. Since the direction is changed by the inclined front part 1, it is possible to prevent large airflow turbulence caused by the change in direction, and once a part of the oil smoke that has entered the hood main body 7 is There is no inconvenience of going back outside.

In addition, lower folding pieces 6 each having an isosceles triangular shape are connected between each side surface part 2 and the suction guiding eaves part 4 via fold lines _a5 and _a7 , and A fold line b ₂ is formed in the center between the fold lines a ₅ and a ₇ of the piece 6, and the lower folding piece 6 can be folded and expanded from this fold line b ₂ , so that the amount of oil smoke generated is comparatively low. When the target is small, the oil smoke can be sufficiently sucked in the normal state in which the lower folding pieces 6, 6 are folded between the side parts 2, 2 and the suction guiding eaves part 4. On the other hand, when a large amount of oil smoke is generated, by stretching the lower folding pieces 6, 6, the lower end opening formed by the side surfaces 2, 2 and the suction guiding eaves 4 can be opened. expands to increase the ability to suck in oil smoke, so the width of the lower end opening can be adjusted as desired in accordance with the amount of oil smoke generated, and at the same time, as much suction as possible can be achieved by the suction guiding eaves.

Further, an isosceles triangular upper folding piece 5 is provided between the upper end portion of each side surface portion 2 and the horizontal upper surface portion 3 via fold lines a ₄ and a ₆ , and this upper folding piece A crease line is placed in the center between crease lines a ₄ and a ₆ of part 5.
b ₁ is formed, and the upper folding piece 5 is folded in half along this crease line b ₁ to maintain its shape, so there is no gap in any part of the main body of the hood, and therefore the ventilation fan Problems such as a decrease in suction power and oil smoke accumulating in the gaps and hanging down are also solved, and there is no need to worry about assembling without creating any gaps during assembly.

Furthermore, since the fastener 8 is provided on the edge of the hood main body 7 on the side of the ventilation fan, the hood main body 7 can be easily attached to and removed from the ventilation fan, and has many advantageous effects as a disposable type ventilation fan hood that is easy to assemble. .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and
Figure 1 is a perspective view, Figure 2 is a developed view of the hood,
FIG. 3 is an explanatory diagram of the folded state of the upper and lower folding pieces, FIG. 4 is a perspective view of the fastener, and FIG. 5 is a plan view of the folded state. 1... Inclined front part, 2... Side part, 3... Horizontal top part, 4... Vertical front part, 5... Upper folding piece part, 6... Lower folding piece part, 7... Hood main body,
8...Fixing tool, _a1 to _a7 , _b1 , _b2 ...Fold line.

Claims (1)

[Scope of utility model registration request] Made from an aluminum sheet with a thickness that allows it to be bent with a slight force along pre-formed crease lines, or a paper sheet with a thin aluminum foil pasted on at least the back side of cardboard or a paper sheet with an aluminum vapor deposition layer formed on it. A horizontally long rectangular upper surface part 3 is connected to the upper side of the substantially rectangular inclined front part 1 through a fold line a ₂ , and a horizontally long rectangular upper part 3 is connected to the lower side of the inclined front part 1 through a fold line a ₃ . A shaped suction guiding eaves section 4 is provided in succession, and the inclined front section 1
Approximately isosceles triangular side portions 2, 2 are provided in succession on both sides of the screen via fold lines a ₁ , a ₁ , and further between the upper end portions of the side portions 2 , 2 and the horizontal upper surface portion 3 . The upper folding pieces 5, 5 each have an isosceles triangular shape.
are connected via fold lines a ₄ , a ₆ , a ₄ , a ₆ , and
The fold lines a ₄ , a ₆ , a ₄ ,
Crease lines b ₁ , b ₁ are formed in the center between a _{6 and the} upper folding pieces 5 , 5 are folded in half to maintain their shape, and the side portions 2 , 2 and the suction guiding eaves part 4, there are lower folding pieces 6, 6 in the shape of an isosceles triangle, respectively, at the fold lines _a5 ,
a ₇ , a ₅ , a ₇ are connected to each other, and a fold line b ₂ , b is provided in the center between the fold lines a ₅ , a ₇ , a ₅ , and a ₇ of the lower folding pieces 6 , 6 . ₂ , and from the fold lines b ₂ and b _2, the lower folding pieces 6, 6 can be freely folded and expanded to form a hood main body 7, and further, the hood main body 7
An easy-to-assemble ventilation fan hood which is provided with an optional fastening tool 8 at the end of the ventilation fan side.