JPS61103515A - Smoke exhausting device - Google Patents

Abstract

PURPOSE:To prevent a smoke exhausting device from disablement of discharging waste water or from being kept always at discharging state of the waste water and to obtain a device useful in general family where water discharging time is usually short by using a device capable of executing cleaning with cleaning liquid stored in a cleaning liquid tank. CONSTITUTION:When a ventillation fan 20 is driven, smoke is sucked from a gas sucking port 21 to the inside of a flue 23 of a main body 19 of a smoke exhausting device, and oil component collides with a buffle plate 22 and the flue causing deposition thereto. The air freed of almost all of the oil component is discharged through a ventillation fan 20 to the outside from a gas discharging port. When the device is washed, cleaning liquid heated to a fixed temp. by a heater 30 in a cleaning liquid tank 25 is pressurized by a cleaning liquid pump 26 and sprayed through a cleaning nozzle 24, thus, the oils deposited to an oil separating device of the main body 19 of the smoke exhausting device is removed, and the cleaning liquid is fed back to the cleaning liquid tank 25 again, then it is further pressurized by the cleaning liquid pump 26 and fed to the cleaning liquid nozzle 24.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a smoke evacuation device having a function of removing oil and fat contained in oil smoke and a function of cleaning the removed oil and fat.

Conventional Structure and Problems Conventionally, this type of smoke evacuation system bends the direction of the sucked air with a baffle, and uses inertia to cause the oil and fat in the smoke to collide with the inner wall of the smoke evacuation system and remove it. The remaining oil and fat inside the main body was removed by spraying hot water containing detergent from a spray nozzle installed inside.

This is mainly limited to commercial kitchen equipment and has not yet been widely used in general households. The reason for this is that, as shown in Figure 1, the system for this type of smoke exhaust system is such that hot water is pressurized by a pump 1 and sent into the smoke exhaust system body 2 to clean the oil and fat separator. In order to drain water, a large amount of hot water and detergent are required, and it is conceivable that the equipment 3 such as hot water supply equipment and detergent tank becomes large.

Therefore, the inventors previously proposed a smoke evacuation device that can be used in ordinary homes, as shown in FIGS. 2 and 3, which stores cleaning fluid, heats it, and reuses it for circulation.

This smoke evacuation device is installed on the microwave oven as shown in the figure, and has an intake port 4 in the lower part and a flue having a plurality of baffles 6 in the inner wall, and this flue has an upper part. is connected to a duct 7 via an exhaust fan 6. A cleaning liquid tank 8 is formed in the lower part of this flue, and water is introduced from a water supply pipe 9 through a water supply valve (not shown), and then from a detergent tank 10 through a solenoid valve (not shown). It is supplied and stored through.

When cleaning, the cleaning liquid is heated by the heater 11 provided in the cleaning liquid tank, and the suction port 1 of the pump 12 is heated.
The cleaning liquid was sucked up from the cleaning nozzle 14 and sprayed onto the inner wall of the flue, the baffle 5, and the exhaust fan 6 to clean the adhered oil and fat. When the cleaning is finished, the cleaning liquid is returned to the cleaning liquid tank 8 and stored therein. When the cleaning liquid is washed several times and the detergent loses its effectiveness, the drain valve 15 of the cleaning liquid tank 8 is opened and the water is drained through the drain pipe 16. After the drainage is finished, water and detergent are supplied again. At this time, a solenoid valve as shown in Fig. 4 was used as the drain valve 16, but the filter 17 was clogged due to dirt and oil contained in the air, making it impossible to drain water. A problem has arisen in which foreign matter such as dirt, dust, oil and fat, as mentioned above, becomes clogged between the drain passage and the valve 18, resulting in the drain being drained and resulting in no boxwood.

To provide a smoke evacuation device that can be used for general household use and has a function of storing liquid in a tank and cleaning it.

Structure of the Invention The smoke exhaust device of the present invention includes an inlet for sucking oily smoke with an exhaust fan, a flue having an oily separator for separating oily and fats contained in the inhaled oily smoke, and a cleaning device for cleaning the oily and faty separator. A smoke evacuation device main body having multiple rows of cleaning nozzles;
The cleaning device includes a cleaning tank located below the main body of the smoke evacuation device, a water supply/detergent supply device that supplies cleaning liquid from the cleaning tank to the cleaning nozzle, and a cleaning device consisting of one device, and the open end of the approximately inverted U-shaped pipe is connected to the It is located at the bottom of the cleaning tank, and the other end is connected to a drain pipe, allowing the entire cleaning solution to be discharged without using a drain valve due to the siphon action.

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

In Fig. 5, reference numeral 19 denotes a main body of a smoke evacuation device installed at a certain distance above a range (not shown). A flue 2 having an oil and fat separation device consisting of a plurality of panfurs 22 that separates oil and fat contained in oil smoke.
3, and multiple rows of cleaning nozzles 24 for cleaning this oil and fat separation device. 26 is a cleaning tank located below the smoke evacuation device main body 19;
A cleaning pump 26. supplies cleaning liquid to the cleaning nozzle 24 from a cleaning pump 26. A water supply valve 20 that supplies water to the cleaning tank 25, a detergent valve 29 that supplies detergent from the detergent tank 28, a heater 3Q that heats the cleaning liquid provided in the cleaning tank 25, and a water level sensor 31 that detects the water level of the cleaning liquid. It constitutes a processing cleaning device. The cleaning liquid from the cleaning tank 26 is drained by using a substantially inverted U-shaped U-shaped tube, with the open end located at the bottom of the cleaning tank 25 and the other end connected to the entire drain pipe 32, as shown in FIG.
This is done by means of a shaped pipe 33.

The operation in the above configuration will be explained. First, to explain the case of exhausting smoke, when you start cooking in a microwave (not shown) and rotate the exhaust fan 20, the oily smoke generated from the food to be cooked is discharged from the intake port 21 to the flue 23 of the main body 19 of the smoke exhausting device. The oil is sucked into the interior and advances to the exhaust port while being sharply bent in direction by the oil separator consisting of a plurality of baffles 22. During this time, the oil and fat collide with the plurality of baffles 22 and the inner wall of the flue 23 due to its inertial force. ,adhere to. In this way, most of the oil and fat content is removed, and the air is then exhausted from the exhaust port through the entire exhaust fan 20 to the outside. Although the oil and fat separation device comprising a plurality of baffles 22 has been described above, the present invention does not particularly limit the oil and fat separation means.
A filter, electrostatic precipitator, etc. may be used.

Next, the case of cleaning will be explained. Although the smoke evacuation device main body 19 is installed above the range (not shown) and the power is turned on, the water level sensor 31 detects that the cleaning tank 26 of the cleaning device is empty, and the water supply valve 27 and detergent are turned on. Valve 29 opens,
Water and detergent are supplied to the washing tank 25. When the cleaning liquid in the cleaning tank 25 reaches a certain level, the water level sensor 3
1, the water supply valve 27 and detergent valve 29 are closed, and the supply of water and detergent is stopped.

When a cleaning switch (not shown) is turned on in this state, the heater 30 in the cleaning tank 26 is first energized and the cleaning liquid is heated. When the cleaning liquid reaches a certain temperature, the cleaning pump 26 is operated, and the cleaning liquid pressurized by the cleaning pump 26 is sprayed from the cleaning nozzle 24, and the smoke evacuation device main body 19 is sprayed.
The oil and fat adhering to the oil and fat separator are cleaned, and the oil returns to the cleaning tank 26, where it is pressurized by the cleaning pump 26 and supplied to the cleaning nozzle 24. When the oil and fat in the oil and fat separator has been cleaned in this way, the power supply to the heater 30 and the cleaning pump 26 is stopped, and the cleaning liquid is stored in the cleaning tank 25 again. After cleaning the oil and fat separator several times, if the cleaning liquid loses its effectiveness, the water supply valve 2
9 is opened to supply water, and when the water level reaches the upper end of the inverted U-shaped pipe 33 provided in the cleaning tank 26, the water supply valve 27 is opened.
is closed and water supply is stopped. At this time, the cleaning tank 25 and the drain pipe 32 are brought into communication with the cleaning liquid, and water is then drained by the siphon action until it reaches the open end of the approximately inverted U-shaped pipe 33 at the bottom of the cleaning tank 26. When the water is drained in this manner, water and detergent are again supplied to the washing tank 2o.

Effects of the Invention As shown in the above embodiments, the smoke exhaust device of the present invention provides a device for general household use that has the function of removing oil and fat contained in oil smoke, and the function of cleaning the oil and fat after removal. As well as being able to do so, it also reduces oil and fat content, dust, and dust! Because there is no moving part or filter like a solenoid valve to drain the cleaning liquid that contains a lot of water, there is no need to drain the water, and there is no need for a valve part. It exhibits the following effects: flow resistance is low and drainage time is extremely short.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional smoke evacuation device for commercial use, Fig. 2 is a side sectional view showing the entire smoke evacuation device of the prior application, Fig. 3 is a front view of the smoke evacuation device, and Fig. 4 5 is a front view showing an embodiment of the smoke evacuation device of the present invention, FIG. 6 is a sectional view of the same side, and FIG. 7 is a sectional view of the drain valve used in the smoke evacuation device of the present invention. FIG. 2 is a side cross-sectional view showing a drain valve that utilizes the siphon action of FIG. 19...Smoke exhaust device main body, 2o...Exhaust fan, 21...Intake port, 22...
Baffle, 23... Flue, 24... Washing nozzle, 26... Washing tank, 3o...
...Heater, 31...Water level sensor, 32. Old.
・Drain pipe, 33... Roughly inverted U-shaped pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 □ \Q L'J σtsuku

Claims (1)

[Claims] A smoke evacuation device body that has an intake port that sucks in oil smoke using an exhaust fan, a flue that has an oil separator that separates oil and fat contained in the inhaled oil smoke, and multiple rows of cleaning nozzles that clean the oil and fat separator. and a cleaning device consisting of a cleaning tank located below the main body of the smoke exhaust system, a cleaning pump that supplies cleaning liquid from the cleaning tank to the cleaning nozzle, and a water/detergent supply device that supplies water and detergent to the cleaning tank. A smoke evacuation device in which the open end of a substantially inverted U-shaped pipe is located at the bottom of the cleaning tank, and the other end is connected to a drain pipe, so that the cleaning liquid can be discharged by siphon action.