JP2854735B2 - Smoke exhaust hood - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flue gas treatment hood. More specifically, the present invention
The present invention relates to a new smoke exhaust treatment hood that is excellent in smoke exhaust efficiency and can suppress oil stains, and is useful as a smoke exhaust device for kitchens and the like.

[0002]

2. Description of the Related Art Conventionally, various ideas have been devised for smoke exhaust around a gas table in a kitchen, and the smoke exhaust process is generally performed by, for example, as shown in FIG. A method in which a food (a) is placed above a gas table (c) of a cooking table (b), and oil smoke and the like generated during cooking is collected in the food (a) and exhausted outside by a fan. Has been taken.

FIG. 6 is a cross-sectional view illustrating the state of such smoke exhaust processing. For example, as illustrated in FIG. 6, most of the smoke generated during cooking is collected in a hood (A) separated by an upper hood wall (D), and is smoked by a ventilation fan (O). Exhaust air is exhausted to the outside to prevent the kitchen from being filled with smoke or contaminated by oil smoke or the like to some extent.

[0004]

However, in the case of such a conventional smoke exhaust hood (A), the inside of the hood wall (D) or the upper wall (F) of the gas table (C),
Then, the oil contained in the oil smoke adheres to the ventilation fan (e), and there is a problem that it is extremely troublesome and even difficult to clean and remove the oil.

[0005] In order to solve such a problem, it has been proposed to apply silicon baking coating to the inside of the hood wall (d) or the wall surface (f) so that attached oil can be easily wiped off. I have. However, when such a full-surface silicon baking coating is performed, an increase in manufacturing cost is unavoidable, so that it has not been put to practical use.

[0006] Even if the inside of the hood wall (d) and the wall surface (f) are easily cleaned by the silicon baking coating, the oily smoke containing the oil is discharged from the exhaust port (g). With (e), the outer wall (h) around the exhaust port (g) was unavoidably contaminated with oil.
Removal of these stains has also been extremely difficult in practice.

[0007] The present invention has been made in view of the above circumstances, and solves the drawbacks of the conventional smoke exhaust hood.
It is an object of the present invention to provide a new flue gas treatment hood that can improve the exhaust / smoke efficiency and can smoothly remove oil from the smoke hood.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a foam generating device and a foam feeding device for feeding foam into an indoor hood, and includes a foaming device inside an outdoor hood of a ventilation fan. Provided with a foam breaking device having a plurality of pins erected therein, and an oil mist collecting container provided to enable disposal or collection in a foam generating device. .

Further, the present invention is characterized in that the above-mentioned foam breaking device is arranged in multiple or multiple stages, and that a plate-like body or a net-like body having a large number of pins erected thereon is used as the foam breaking device. There are.

[0010]

In the smoke exhaust treatment hood of the present invention, the foam generated in the foam generator is sent into the indoor hood by the foamer. As a result, the oil contained in the oil smoke is adsorbed by the foam, and is discharged outside the room by the ventilation hood. For this reason, oil stains do not adhere to the inside of the hood, the surrounding wall surface, the vicinity of the exhaust port, and the ventilation fan.

Further, in the smoke exhaust treatment hood according to the present invention, since the foam adsorbing oil is efficiently broken by the foam breaking device, dirt on the outside wall surface and the like due to scattering of the foam is prevented. The oil mist collected by the oil mist collection container is collected in the foam generator, and further, separation of the oil component and the foaming component, disposal of the oil component, and reuse of the foaming component are facilitated.

Further, by arranging multiple or multiple stages of the foam breaking device, coarse foaming and fine breaking can be performed, and the foam breaking is performed more completely.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a flue gas treatment hood according to the present invention. FIG.
FIG. 2 is a cross-sectional view showing one embodiment of the present invention. For example, as exemplified in FIG. 1, the smoke exhaust treatment hood of the present invention has a foam generator (2) and a foamer (3) for feeding foam into an indoor hood (1), and A foam breaker (7) having a plurality of pins (6) installed in an outdoor hood (5) of a ventilation fan (4) is provided.

The smoke exhaust hood is disposed above the gas table (9) of the cooking table (8), similarly to the conventional hood. An oil mist collection container (10) is provided below the outdoor hood (5) to collect broken foam through an inclined plate (11), and to collect the collected oil mist. It can be collected in the generator (2).

The foam generator (2) can be of various constructions. Basically, the foam generator (2) generates bubbles, adsorbs oil in oil fumes, and forms inside the indoor hood (1). A holding tank section (14) for a foaming cleaning liquid (13) having a cleaning ability for preventing oil from adhering to a face wall and a wall surface (12) around a gas table (9), and air is supplied to the foaming cleaning liquid (13). Can be constituted by a blower (15) for blowing and foaming and a blowing nozzle (16). In this case, for more effective foaming, the blowing nozzle portion (16) is made porous in order to improve the dispersion of air,
It is also advantageous to inhale air in a more highly dispersed state.

As the foaming cleaning liquid, for example, an aqueous solution or dispersion of a surfactant having a concentration of about 0.5 to 2% is suitably used. In this case, the type of the surfactant is not particularly limited, but ethylene oxide is added to a higher alcohol, and a sulfated product thereof is not greatly affected by temperature, water quality, and the like. It is exemplified as a preferable one in terms of safety and no pollution problem.

For the foaming device (3), for example, FIG.
As exemplified in the above, various types of air-permeable filters, porous tubes, nets, and the like can be used. This foaming device employs a shape and a structure suitable for adsorbing oil by causing the generated foam to scatter as finely as possible into the indoor hood (1). The shape and structure are appropriately selected according to the position of the smoke treatment hood, the size of the space allowed for its installation, and the like.

The foam generator (2) is not always required to be located indoors. Depending on the case, it is also possible to make it outdoor. In addition, the foaming device (3) connected to the foaming device (2) may block exhaust from the gas table (9) or obstruct ventilation thereof in any shape and structure. No.
Furthermore, it is preferable that the foaming device (3) is provided with a function of preventing generated bubbles from falling onto the gas table (9). For this reason, a filter-like or net-like foaming device having a function of capturing falling bubbles is more preferable. Needless to say, a net-like body or a mesh-like body for preventing foam from falling can be arranged separately from the foaming device (3).

In order to prevent the foam from dropping and effectively adsorb the oil of the oily smoke, and to discharge the foam to the outside through the ventilation fan (4) smoothly, the ventilation fan (4)
Along with the control of the suction force and the foam characteristics, an air outlet (17) is provided around the gas table (9),
Air is blown out by a fan (18) disposed inside the cooking table (8) or the like, an air curtain is formed around the gas table (9), and the ascending air flow is increased to remove oily smoke from the indoor hood (1). It is also advantageous to collect the smoke inward and in the direction of the ventilation fan (4).

At this time, the air curtain plays a role of preventing the oil content from scattering around the gas table (9). Further, in the smoke exhaust treatment hood of the present invention, the fan (18) for forming the air curtain, the blower (15) of the foam generator (2), and the ventilation fan (4).
May be manually started differentially, or may be automatically started and stopped by a signal from an oil smoke sensor provided at an appropriate portion.

The smoke exhaust hood according to the present invention has a foam breaker (7), and the foam discharged from the ventilation fan (4) after adsorbing the oil is broken by the foam breaker (7). . This foam breaking device (7) has a structure in which a number of pins (6) are erected on a support. The support in this case can be exemplified by a plate-like body or a net-like body as a preferable shape, but is not limited to a plate-like body or a net-like body.

Since the large number of pins (6) are extremely effective means for breaking bubbles, the shape and size of the outdoor hood (5) are taken into account, and the efficiency of the outdoor hood (5) is improved without impairing its air permeability. What is necessary is just to select the shape and structure of the support capable of breaking bubbles. When a plate is used as a support, not only a flat plate as shown in FIG. 1 but also a curved plate structure having pins (6) as shown in FIG. Is also good. In addition, in each of the plate-like body and the curved plate, a large number of ventilation micro holes may be provided in order to secure air permeability.

There is no particular limitation on the material of the pin (6) or the support. It can be a metal, ceramic, hard resin, or a composite thereof, and the pin (6) and the support may be integrally formed. Further, as shown in FIG. 3, the foam breaking device (7) for breaking the foam adsorbing the oil may be arranged in multiple or multiple stages facing the ventilation fan (4). The multiple or multi-stage arrangement may be arranged in an inclined manner as shown in FIG. 4, or may be divided into different foaming functions, and together with a foaming device (7) opposed to the ventilation fan (4), an outdoor side A bubble breaker (71) provided with a finer and higher-density pin (6) may be arranged at a later stage in the hood (5). in this case,
The subsequent bubble breaking device (71) may have a mist collecting function similar to that of the inclined plate (11) of FIG.

By doing so, coarse foaming is performed by the foaming device (7) in the first stage, and the foaming device (71) in the second stage.
Can produce shredded foam. The broken foam can be collected in the oil mist collecting container (10) along the inclined plate (72). Oil mist collection container (10)
The oil mist collected in (1) can be collected in the foam generator (2) through the conduction path (73). At this time, the oil mist collecting container (10) may be provided with a means for separating the oil component and the foaming detergent component, and the oil component may be discarded after separation, and only the foaming detergent component may be reused. As the separating means, for example, a known means for collecting and separating only the surface oil component is employed.

The oil mist collected in the oil mist collecting container (10) may be directly discarded without being transferred to the foam generator. For example, by the above foam breaking devices (7) and (71), the foam is completely destroyed, and the foam adsorbing the oil is removed from the outdoor hood (5).
To prevent it from scattering outside and contaminating the outer wall and the like.
Then, the oil mist can be efficiently collected, the oil can be discarded, and the foaming detergent can be reused.

Of course, the present invention is not limited to the above example. In addition to the foam generator (2) and the foaming device (3), the shape and structure of the foam breaking device (7) can be variously modified. For example, the bubble breaking device (7) may have a structure such as a cylindrical rotating body on which the pin (6) is erected.

[0027]

According to the present invention, as described in detail above, in a smoke exhaust hood such as a kitchen, 1) the oil component of the oil smoke is selectively adsorbed to the foam without impairing the ventilation efficiency for exhaust and smoke exhaust. Can be removed. For this reason, it is possible to prevent contamination of the inner wall of the hood, the ventilation fan, the periphery of the exhaust port, and the like by oil, and to realize a clean kitchen and the like.

2) Since the bubbles adsorbing the oil can be effectively broken, the contamination by the oil outside can be prevented, and the collection and disposal of the oil can be facilitated. 3) Reusable foaming detergent for foam generation.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an example of the foam breaking device of the present invention.

FIG. 3 is a sectional view showing still another example of the foam breaking device.

FIG. 4 is a sectional view showing another example of the present invention.

FIG. 5 is a perspective view showing a smoke exhaust hood.

FIG. 6 is a cross-sectional view showing a conventional smoke exhaust hood.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor hood 2 Foam generator 3 Foamer 4 Ventilation fan 5 Outdoor hood 6 Pin 7 Foam breaker 8 Cooking table 9 Gas table 10 Oil mist collection container 11 Inclined plate 12 Wall surface 13 Foaming cleaning liquid 14 Holding tank unit 15 Blower 16 Blowing nozzle 17 Air outlet 18 Fan 71 Bubble breaking device 72 Inclined plate 73 Conduction path

Claims (6)

(57) [Claims] 1. A foaming device having a foam generating device and a foam feeding device for feeding foam into an indoor hood, a foam breaking device having a plurality of pins erected in an outdoor hood of a ventilation fan, and A smoke exhaust treatment hood provided with an oil mist collection container so as to be freely discarded or collected in a foam generator. 2. The smoke exhaust treatment hood according to claim 1, wherein a plurality of foam breaking devices are arranged. 3. The smoke exhaust hood according to claim 1, wherein the foam breaking device comprises a plate-like body or a net-like body on which a number of pins are erected. 4. The smoke exhaust hood according to claim 3, wherein a plate-like body or a net-like body in which finer pins are erected at a high density is arranged as a foam-breaking device in the preceding stage together with the foam-breaking device in the preceding stage. 5. The oil mist collecting container is provided with a device for separating oil and a foaming detergent component, and only the foaming detergent component can be collected by the foam generator.
Smoke treatment hood. 6. The smoke exhaust treatment hood according to claim 1, wherein the outdoor hood is provided with an inclined plate for collecting oil mist.