JPH0571849B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) This invention relates to a cooking smoke evacuation device that exhausts smoke generated during cooking to the outdoors.

(Prior Art) Conventionally, cooking smoke evacuation devices such as range hood fans have been known for exhausting smoke generated during cooking to the outdoors.

The outline of a cooking smoke evacuation device is that it is placed above a gas range, and a fan is provided inside the range hood body to exhaust smoke taken in from a lower vent to the outside.

(Problems to be Solved by the Invention) As mentioned above, the cooking smoke evacuation device takes in smoke from the opening at the bottom and exhausts it to the outside. Things that can be controlled are already known. This device widens the opening at the bottom by bringing the slider, which is screwed onto a screw rod that is rotated by the power of the drive motor, into contact with the movable front panel of the range hood body and pushing it outward. The fan's suction port is fully opened,
If you use it for a long time, oil will get all over it. If this oil is not cleaned, it will drip downward and accumulate on the folded flange at the bottom, resulting in the oil adhering to it falling when the movable panel is moved.

To prevent this, for example, by slowly moving the movable panel over time, large swings will not occur and the above problem can be solved, but on the other hand, it takes a long time to confirm that the operation is complete, and it takes a long time to confirm the operation is completed. This becomes a negative factor.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a cooking smoke evacuation device that allows quick confirmation of completion of operation and does not cause oil to fall.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a range hood that is mounted within a range hood body having a movable panel on the front, and that has a drive motor and a drive motor. It has a cam body that rotates with the power of an actuating member that pushes the movable panel outward in the actuating position; an intermediate actuating area of the cam part is formed into a cam shape with a large slope so that the amount of movement of the actuating member increases; The final operating area is
The cam shape has a small slope so that the amount of movement of the actuating member can be kept small.

(Function) According to this cooking smoke evacuation device, during the initial operation of the movable panel, after the movable panel moves slowly due to the cam portion having a small slope, the intermediate region moves quickly due to the cam portion having a large slope. . Then, in the final region, the slow movement operation is completed again by the cam portion having a small slope. Therefore, large vibrations do not occur in the movable panel, so oil does not fall.
Moreover, the completion of operation of the movable panel can be quickly confirmed.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings of FIGS. 1 to 7.

In the figure, reference numeral 1 indicates a range hood main body, and the front surface of the range hood main body 1 is a movable panel 3 that can rotate in the direction of the arrow with an upper hinge as a fulcrum. The movable panel 3 also serves as an opening/closing lid that opens and closes a suction port 7a of a fan 7, which will be described later, and by rotating outward, it secures a wide lower opening 5 and allows the suction port 7a to be fully opened. It's becoming like that. Further, a fan 7 is provided inside the range hood main body 1 to suck smoke taken in from a lower opening 5 and discharge it to the outside from an inlet 7a, and the inlet 7a is closed by a movable panel 3. It's summery.

The movable panel 3 is operated and controlled by a drive mechanism 9 and is biased in the closing direction by a biasing spring S.

The drive mechanism 9 includes a drive motor 11 and a cam body 13.
and first and second actuating members 15, 1 which are actuating members.
It is mainly composed of 7.

The drive motor 11 can rotate forward or reverse and is fixed to the base plate 19. A first gear 23 serving as a worm is integrally attached to the output shaft 21 of the drive motor 19, and the first gear 23 meshes with a second gear 25 serving as a worm wheel.
5 is a gear shaft 27 supported by the base plate 19
It is attached integrally to the. A third gear 29 with a small diameter is integrally attached to the gear shaft 27.
9 meshes with a fourth gear 33 that is integrally attached to the cam shaft 31 of the cam body 13, and the speed is reduced by the gear ratios of the first, second, third, and fourth gears 23, 25, 29, and 33. Rotational power is applied to the cam body 13.

The drive motor 11 is controlled to be turned off by the protrusion 13a provided on the cam body 13 hitting the switch terminals of the full-close and full-open detection switches M ₁ and M ₂ provided on the cam base plate. .

The cam body 13 has a cam surface 35 on its outer periphery, which is a cam portion for an initial operating region a, an intermediate operating region b, and a final operating region c. As shown in FIG. 2, the cam surface 35 in the initial operating region a and the final operating region c is a cam surface with a small slope without a large change in the distance from the cam shaft 31 to the cam surface 35, and as shown in FIG.
As shown in FIG. 7, the rotation angle θ of the first actuating member 15
is set so that it can be kept small.

Further, the cam surface 35 in the intermediate operating region b has a large slope with a large difference in distance from the cam shaft 31 to the cam surface 35, and as shown in FIG. The rotation angle θ is set to be large.

The first actuating member 15 has a roller-shaped slider 37 that runs along the cam surface 35 of the cam body 13, and one end is connected to the base plate 19 by a pin 38.
It is rotatably supported on. Therefore, the first
As the cam body 13 rotates, the other end of the actuating member 5 can rotate in the direction of arrow A about the pin 38 as a fulcrum.

The second actuating member 17 has one end connected to the free end side of the first actuating member 15 and the other end connected to the movable panel 3.

In the cooking smoke evacuation device configured as described above, the cam body 13 rotates clockwise and counterclockwise about the camshaft 31 as the drive motor 11 rotates forward or reverse, respectively. At this time, slider 37
runs along the cam surface 35, so the first actuating member 15 rotates clockwise about the pin 38 as a fulcrum. When the first operating member 15 rotates, in the initial operating region a, the amount of movement per unit time, that is, the rotation angle θ is small, as shown in FIG. Therefore, large vibrations do not occur in the movable panel 3, and oil does not fall. Next, as shown in FIG. 6, for the intermediate actuating member b, since the amount of movement per unit time, that is, the rotation angle θ is large, the movable panel 3 opens quickly, and then again in the final actuating area c. Since θ becomes small, it rotates slowly and the operation is completed. As a result, prompt confirmation of operation completion can be obtained.

[Effects of the Invention] As explained above, according to the cooking smoke evacuation device of the present invention, the operation of the movable panel can be controlled slowly during the initial operation and the final operation, so large vibrations do not occur and the oil is removed. It won't cause you to fall. Furthermore, since the operation can be quickly controlled during intermediate operations, prompt confirmation of operation completion can be obtained, and the same functionality as before can be ensured.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view showing the cooking smoke evacuation device of the present invention, Fig. 2 is an explanatory diagram of the drive mechanism when the movable panel is fully closed, and Fig. 3 is an illustration of the drive mechanism when the movable panel is fully open. FIG. 4 is an enlarged side view of the drive mechanism, and FIGS. 5, 6, and 7 are explanatory views showing the movement of the cam body and the first actuating member. 1... Range hood body, 11... Drive motor, 13... Cam body, {15... First operating member,
17...Second actuation member} (actuation member), 35...Cam surface (cam part), 37...Slider, a...Initial actuation area, b...Intermediate actuation area, c...Final actuation area .

Claims (1)

[Claims] 1. A drive motor, a cam body that is installed in the range hood body with a movable panel on the front, and rotates by power from the drive motor, and an initial operating area, intermediate operating area, and final operating area of the cam part formed on the cam body. an actuating member having a slider running over a region, movable from a non-operating position to an operating position, and pushing the movable panel outwardly in the operating position; The cam shape has a large slope to increase the amount of movement of the actuating member, and the initial actuation area and final actuation area are
A cooking smoke evacuation device characterized by having a cam shape with a small slope so that the amount of movement of an operating member is kept small.