JPS6159132A - Smoke ventilation device - Google Patents

Abstract

PURPOSE:To reduce the noise at the time of smoke ventilation and to increase the amount of removable oily substance inside the smoke ventilation unit by constructing baffles on the unit inner wall with a chemicals-resistant, sound- absorbing porous material. CONSTITUTION:The inner wall of a smoke ventilation unit 7 has on it a multiple number of baffles 13, 14, 15 and multiple rows of cleaner nozzles 16, 17 clean said baffles and the inner wall of the smoke ventilation unit 7 and a ventilation fan 11. Because the baffles 14, 15 among the baffles are made of a chemicals- resistant, sound-absorbing porous material such as ceramics, polypropylene resin etc., they have a larger surface area and a greater surface roughness, and so, they collect more oily substance than metallic baffles. They also absorb the sound energy to allow a noise reduction. Further, as the same amount of the oily substance can be removed even if the airflow velocity is lowered than prior metallic baffles, a small ventilation fan will do, which contributes to lower the noise.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a smoke evacuation device having a collision type oil removal function and a cleaning function for cleaning the removed oil and fat.

Conventional Structure and Problems Conventionally, this type of collision-type smoke evacuation device shown in FIG. 1 has a plurality of baffles 1.2.
3, the direction is sharply bent, and the inertia force removes oil and fat in the air from the inner wall surface of the smoke evacuation device main body, the baffle, and the exhaust 71
The attached oil and fat was removed by spraying a cleaning liquid from multiple rows of cleaning nozzles 6.6 installed inside the main body of the smoke evacuation device. The wind speed of baffles 1, 2, and 3 of such conventional smoke evacuation equipment is 6 to 6
The wind noise reached rrL/sec and was a major cause of noise during smoke exhaust. In addition, the amount of oil and fat that collides with, adheres to, and is removed from the inner wall surface of the smoke evacuation device body and the baffles 1, 2.3 increases as the wind speed at the baffles 1, 2, and 3 increases. The problem is that the noise gets louder. On the other hand, in order to increase the wind speed with 1°2.3 parts of Banoful,
It is necessary to narrow the air passage of baffle 1, 2, and 3, and as a result, the air passage resistance becomes large, and the specified air volume (10Ju
There is a problem in that a large exhaust gas tank 4 is required to obtain a maximum speed of 77 l/min. Due to these two problems, there is a limit to the amount of oil and fat that can be removed inside the smoke evacuation device.

OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides a smoke evacuation device that produces low noise during smoke evacuation and can remove a large amount of oil and fat.

Structure of the Invention The smoke evacuation device of the present invention includes a smoke evacuation device main body that has an intake port at the bottom and an exhaust fan at the top, and has a plurality of baffles on the inner wall and multiple rows of cleaning nozzles for cleaning the baffle and the inner wall. , a cleaning liquid supply device that supplies cleaning liquid to the cleaning nozzle, and by making the bathoreful from a porous sound-absorbing material having chemical resistance such as ceramics or polypropyne resin, noise during smoke exhaust is reduced, and The amount of oil and fat that can be removed inside the smoke device body can be increased.

Description of examples An embodiment of the present invention will be described based on the accompanying drawings.

In Fig. 2 and Fig. S, 7 is the smoke evacuation device installed at a certain distance above the range 8.
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a smoke guide plate that guides the smoke to the lower intake port 12 of the smoke evacuation device main body A;
Reference numeral 11 denotes an exhaust fan for sucking oily smoke, and is provided at the upper part of the smoke exhaust device main body 7. The inner wall of the smoke evacuation device main body 7 includes a plurality of baffles 13, 14, 16 and the baffles 13, 14.
15, the inner wall of the smoke evacuation device main body 7, and multiple rows of cleaning nozzles 15 and 17 for cleaning the exhaust fan 11. Baffle 14 among the plurality of baffles 13, 14, 16
15 is made of a porous sound absorbing material having chemical resistance such as ceramics or polypropylene resin.

Further, the cleaning nozzles 16 and 17 are connected to a cleaning liquid tank 18 and a pump 19 inside the main body of the smoke evacuation device, which constitute a cleaning liquid supply device, and pipes 20, 21, and 22.

, the operation in the above configuration will be explained. First, to explain the case of exhausting smoke, when you start cooking in the heating part 10 of the range 8, when you rotate the exhaust fan 11, the oily smoke generated from the food is exhausted from the intake port 12 along the smoke guide plate 9. A plurality of baffles 13, 14 .
At step 15, the direction is sharply bent as it advances toward the exhaust port, but during this time, the oil and fat is caused by its inertia to break through multiple baffles 13 and 14.
15 and collides with and adheres to the inner wall of the smoke evacuation device main body A.

In particular, since the panfurs 14 and 15 are made of a porous material, they have a large surface area and have a large surface unevenness force, so that more oil and fat adheres to them than metal baffles. The air from which most of the oil and fat has been removed in this way is transported to the exhaust fan 1.
1 and is discharged to the outside from the exhaust port. During this exhaust,
The wind speed at the 13°14.15 baffle reached 6 to am/sec, and the wind noise was a major cause of noise.
Since the baffles 14 and 15 are made of porous sound-absorbing material, noise energy is absorbed and noise is reduced. In addition, the higher the air velocity of the baffle 13° 14.16 parts, the better the oil removal performance, but in the case of the embodiment of the present invention, the baffle 14.15 is made of porous material, which removes oil and fat compared to metal. Since there is a lot of adhesion, the same amount of oil and fat can be removed even at a slower wind speed than with conventional metal baffles. Therefore, a small exhaust fan is sufficient and noise can be reduced.

Next, the case of cleaning will be explained. When the exhaust system 7 and 11 are stopped and the pump 19 is operated, the cleaning liquid pressurized by the pump 19 is sprayed from the cleaning nozzle 16.17, and is sprayed onto the inner wall of the smoke evacuation device main body T, the baffles 13, 14, 15, and the exhaust gas. The oil and fat deposited on the fan 11 is cleaned. At this time, since the baffles 14 and 15 are made of a porous material such as chemical-resistant ceramics or polypropylene resin, the oil and fat adhering to the surface and inside can be cleaned without being attacked by the cleaning liquid. Inner wall and panfur 13.14.16
, the cleaning liquid used to clean the exhaust fan 11 is used to clean the smoke exhaust device main body 7.
The liquid returns to the cleaning liquid tank 18 in the lower part, is pressurized again by the pump 19, and is sprayed from the cleaning nozzles 16 and 17. After cleaning for a certain period of time, the pump 19 stops and the cleaning process ends.

Effects of the Invention The smoke evacuation device of the present invention has the following excellent effects.

(1) Because the baffle is made of porous material, it has a larger surface area than metal baffles, and the uneven surface makes it easy for oil and fat to adhere to it, even if the wind speed at the buckle is the same. Many oils and fats can be removed.

(2) Because the baffle is made of porous sound-absorbing material,
It has the effect of absorbing wind noise, reducing noise when exhausting smoke. Also, if the amount of oil and fat that can be removed is the same as that of a metal baffle, the wind speed at the buckle can be lowered.
Furthermore, the exhaust fan can be made smaller and the noise level during smoke exhausting can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a conventional smoke evacuation device, FIG. 2 is a partially cutaway front view showing an embodiment of the smoke evacuation device of the present invention, and FIG. 3 is a side sectional view of the same. 7...Smoke exhaust device body, 11...Exhaust fan, 12...Intake port, 13,14.15.
...Banofunope 16.1 Completed...Cleaning nozzle, 19...Pump. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A smoke evacuation device main body having an intake port at the bottom and an exhaust fan at the top, a plurality of baffles on an inner wall, and a plurality of rows of cleaning nozzles for cleaning the baffles and the inner wall, and a cleaning liquid supply device that supplies cleaning liquid to the cleaning nozzles. A smoke evacuation device comprising: the baffle made of a porous sound-absorbing material having chemical resistance.