JPH0571780A - Exhaust device for cooking - Google Patents

Abstract

PURPOSE:To prevent the interior of a house surrounding a cooking range from catching a fire therefrom even when a fire breaks out from the cooking range during cooking and a flame gets into the duct of an exhaust device for cooking. CONSTITUTION:A suction port 3 is provided above the rear side of a cooking table 2, on which a cooking device 1 is placed, while the port 3 and an exhaust blower 8 are interconnected by a ventilation passage 7. A bypassing pipe 10 serving as another ventilation passage is branched from an intermediate point of the passage 7 so as to be connected to the blower 8 and a damper 13 is installed at the branch point of the passage 7 and the pipe 10 through a fuse 12 to usually close the pipe 10, so that oil in oil mist discharged is prevented from attaching to the interior of the pipe 10. Consequently, when a fire breaks out during the cooking and the abnormally high temperature of the flame causes the fuse 12 to melt and hence the damper 13 closes the passage 7, the pipe 10 provides another new passage, so that the flame in a duct is prevented from being propagated rearwardly from the branch point of the passage 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust system for cooking which surely discharges waste gas, oil smoke, odor, etc. generated during cooking to the outside and prevents the flame generated from a cooker from burning into a house. It is about.

[0002]

2. Description of the Related Art In recent years, an exhaust system for cooking has been generally installed above a cooking device to suck an ascending air current from the cooking device and discharge it to the outside. However, since the exhaust device is installed at a predetermined height from the cooking device, oil smoke stains the wall surface in the middle, and the cleaning of the exhaust device itself is also a high installation position, so it is very difficult to work. there were. Therefore, there is a demand for an exhaust device that does not stain the wall surface around the cooking device and is easy to clean.

From the above, the conventional Japanese Patent Publication No. 60-5
An exhaust device for cooking having a configuration as disclosed in Japanese Patent No. 3818 has been provided. The configuration will be described below with reference to FIG.

As shown in the figure, in this exhaust system, a cooker 102 is arranged on the upper surface of a cooker stand 101, and a duct 103 is provided so as to stand upright at a rear portion of the cooker stand 101 and a rising portion 104 is provided.
Is formed. On the upper surface of the rising portion 104, a suction port 105 is inclined toward the cooking device 102, and a forward airflow guide plate 107 having a flat lower surface is provided on a wall 106 which is in contact with the rear portion of the rising portion 104 and stands upright. It is provided so as to cover the upper part. An air blower 109 is provided at the exhaust port 108 at the end of the upright duct 103.

In the figure, 110 is a natural heat provided in the lower portion of the cooking device 102, 111 is a natural heat forced exhaust pipe, 112 is an opening of the exhaust pipe 111, and 113 is a suction airflow guide plate provided in the suction port 105. is there.

[0006] In the above structure, when the gas on the cooker table 101 is forcibly sucked by the blower 109, the waste gas and oil smoke generated during the cooking process rises to the wall 106 along the forward airflow guide plate 107. It moves toward the inside of the upright duct 103 through the suction port 105 and is discharged to the outside through the exhaust port 108. The suction airflow guide plate 113 functions to prevent the air moving layer from being disturbed.

[0007]

In such a conventional cooking exhaust system, when used for a long period of time, the oil contained in the sucked oil smoke adheres to the inner surface of the upright duct 103. Then, when a flame is generated from the cooking device 102 during cooking, the blower 109 also sucks the flame from the suction port 105, and the flame ignites the oil adhering to the inner surface of the upright duct 103 to become a flame in the duct, There was a danger that it would progress to the rear and burn the houses other than the kitchen.

The present invention solves the above problems and prevents the flame from being generated from the cooker during cooking or reaching the flame in the duct, and preventing the burning of the house other than the kitchen. It is an object of the present invention to provide an exhaust device for cooking that can be used.

[0009]

In order to achieve the above object, the present invention connects a suction port provided at the rear upper part of a cooker table having a cooker arranged on the upper surface thereof, and connects the suction port and an exhaust blower to suction. A ventilation path for leading out the air to the outside of the room, a bypass path serving as another ventilation path connected to the exhaust blower from the middle of the ventilation path, and a branch point between the bypass path and the ventilation path, and usually the bypass. The damper is configured to close the path side and close the ventilation path side at an abnormally high temperature.

[0010]

According to the present invention, when the normal temperature air containing oily smoke generated during cooking is discharged to the outside of the room, the damper closes the bypass path and opens the ventilation path depending on the temperature. The air, which exhausts through the passage and contains oily fumes, is normally prevented from entering the bypass passage. Also, when a flame is generated from the cooker and abnormally high temperature air containing flame is sucked into the ventilation passage from the inlet, the temperature causes the damper to open the bypass passage and close the ventilation passage. At the same time as preventing the abnormally high temperature air containing flame from flowing in from the branch point of and, the bypass route changes to a part of the ventilation passage to become the exhaust passage, but since the bypass route is normally closed, Since no oil adheres to the inner surface, it is possible to prevent the flame in the duct from trying to progress.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, a suction port 3 is provided in the upper rear part of the cooker base 2 on which the cooker 1 is arranged on the upper surface, and the canopy 4 and the left and right sides are provided above the cooker base 2 so as to surround the suction port 3. Airflow guide plates 5 are provided on both sides. The canopy 4, the air flow guide plate 5, and the back plate 6 are integrated to form a hood. The suction port 3 has an air passage 7 formed vertically behind the cooker base 2.
Is connected to an exhaust blower 8 attached to the lower inside of the cooker base 2 via an exhaust duct 8. The exhaust blower 8 communicates with the outdoors via an exhaust duct 9. The ventilation path 7 branches in the middle to form a bypass path 10 that connects to the exhaust blower, and a damper 13 is normally attached to this branch point via a fuse 12 so as to close the bypass path inlet 11. Attached to the damper 13 is a weight 15 for urging the fuse 12 to rotate around the shaft 14 and close the rear of the branch point of the ventilation passage 7 when the fuse 12 is blown by an abnormally high temperature. A stopper 16 is provided in the ventilation passage 7 so as to stop at the position where the ventilation passage 7 is closed.

In the above structure, oil smoke, waste gas, etc. generated during cooking are forcibly sucked by the exhaust blower 8, and the airflow guide plate 5 and the canopy 4 are provided from the front of the cooker stand 2.
Guided by the air flow A flowing along the
After entering the inside, it is discharged to the outside through the exhaust blower 8 and the exhaust duct 9. When this exhaust device is used for a long period of time, the oil content in the discharged oil smoke adheres to the inner surface of the ventilation passage 7 as oil a and solidifies, but the bypass passage 10
Since the inside of the bypass passage inlet 11 is normally closed by the damper 13, the oil a does not adhere. And FIG.
If a flame is generated in the cooking device 1 during cooking for some reason, the air containing the flame b is sucked into the ventilation passage 7 from the suction port, and the damper 13 is locked due to the abnormal high temperature. Fuse 12 is blown and weight 1
Due to the weight of 5, the damper 13 is centered on the shaft 14,
It rotates until it comes into contact with the stopper 16 in the ventilation passage 7 to open the bypass passage inlet 11 and close the rear of the branch point in the ventilation passage 7. The flame b that has entered the ventilation passage 7 enters the bypass passage 10 through the bypass passage inlet 11 that is opened while igniting the oil a and spreading the fire. Since there is no adherence of the oil a, the flame in the duct does not progress further rearward.

As described above, according to the cooking exhaust system of the embodiment of the present invention, even if a flame is generated from the cooking device 1 during cooking and progresses to the flame in the duct of the exhaust system, the branch point of the ventilation passage 7 is used. It is possible to prevent the rearward progress, and thus to prevent the burning of houses other than the kitchen.

Although the weight is used to apply the closing force to the damper in the embodiment, a spring may be used instead of the weight, and the damper is an electric type that operates in response to a signal from the temperature sensor. Also does not make a difference in their effects.

[0016]

As is apparent from the above embodiments, according to the present invention, when flame is generated from the cooker, the bypass passage to which oil is not attached can be part of the exhaust passage. Therefore, it is possible to provide the exhaust device for cooking which has a highly safe effect of preventing the flame in the duct from proceeding and preventing the fires from burning in the houses other than the kitchen.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a cooking exhaust device according to an embodiment of the present invention during normal operation.

FIG. 2 is a cross-sectional view showing a state in which a flame is generated from a cooker of the exhaust device for cooking.

FIG. 3 is a cross-sectional view of a conventional cooking exhaust device.

[Explanation of symbols]

 1 Cooker 2 Cooker stand 3 Suction port 7 Ventilation path 8 Exhaust blower 10 Bypass path 13 Damper

Claims (1)

[Claims] 1. A suction port provided at a rear upper portion of a cooker table having a cooker arranged on an upper surface thereof, a ventilation path for connecting the suction port and an exhaust blower to take out suctioned air to the outside of the room, and a ventilation path for the ventilation path. A bypass path which is another ventilation path connected to the exhaust blower from the middle, and is provided at a branch point between this bypass path and the ventilation path, and usually the bypass path side is closed,
An exhaust device for cooking, comprising: a damper that closes the ventilation passage side at an abnormally high temperature.