JPS626430Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a kitchen ventilation fan device which is installed above a gas range, with the back part touching the wall and the upper part touching the ceiling.

This type of ventilation fan, which has been commonly used,
Usually called a range hood fan, it has a hood with a relatively long depth, or in other words, a large surface area that opens downwards, through which air is taken in and exhausted outside. However, in cases where such a suction hood has a large area and is simply opened downward, the suction wind speed decreases as the area increases; With a blower of normal power, an average wind speed of only 0.2 to 0.4 can be obtained, so if there is even a slight air flow, apart from when there is no wind in the room (note, of course, when there is no wind) (This is almost impossible; in other words, the air moves as the person moves.) This greatly reduces its effectiveness. In order to increase the suction wind speed,
In short, it is possible to use a blower with a high power, but the higher the power, the louder the noise, and at the same time, the more power is consumed, which is undesirable.

In addition, in the conventional type, the suction hood protrudes far forward, which narrows the indoor space, making the person who cooks feel nervous. However, it was not desirable.

This idea was created by focusing on the points mentioned above.
The purpose of this is a kitchen ventilation fan that can exhaust air extremely efficiently using an electric motor with the same power as conventional ones.In other words, it only requires a small power fan, which reduces power consumption and reduces noise at the same time. is to provide.

Another purpose of the present invention is that the suction hood can perform the above-mentioned functions without protruding forward as in the case of conventional suction hoods, thereby preventing the indoor space from becoming narrow as much as possible, and thus allowing the user to enjoy cooking in a comfortable manner. An object of the present invention is to provide a ventilation fan device for a kitchen.

Furthermore, another object of the present invention is that the blower can be driven and stopped, and the lower suction damper and the upper suction damper can be opened and closed by a simple lever operation, making it extremely convenient to use, and also making it easier to use when exhaust is stopped. To provide an ventilation fan device for a kitchen that can effectively prevent the intrusion of outside air and noise.

Another object of the present invention is to provide an ventilation fan device for kitchens that allows easy connection and removal of exhaust ducts and maintenance and inspection of blowers and the like.

Next, an embodiment of the present invention capable of achieving the above object will be described in detail with reference to the accompanying drawings.

A is a casing body consisting of a lower chamber A ₁ , an upper rear chamber A ₂ and an upper front chamber A ₃ , b is a removable main front plate with an outside air supply case B ₁ on the back, and C is a partition that is also removable. The lower chamber _a1 is formed by the lower front plate 1, the main front plate b and its outside air supply case _b1 , the lower part of the partition plate c, and the upper and lower partition plates 2, Chamber a ₂ is upper and lower partition plate 2
and the upper part of the partition plate c, and the upper front chamber _a3 is formed by the upper part of the partition plate c, the upper part of the main front plate b and its outside air supply case _b1 , and the upper front plate 3. has been done. The casing body a has a depth dimension as shown in FIG.
It is configured to be smaller than the depth dimension of a cooking device such as a gas range e.

The bottom plate 4 constituting the casing body a is formed with a lower suction port 4a that is much smaller than its depth, and a lower suction damper 5 is installed in this lower suction port 4a (note, approximately 1/2 the size). It is provided so that it can be opened and closed via a shaft 6. The lower suction damper 5 is controlled by means to be described later to have its opening position at its maximum position and a slightly closed position, but in either case, it is configured so that it is inclined forward. has been done. In the illustrated example, the lower suction damper 5 is formed of an arc-shaped main body plate 5a and left and right side plates 5b, but it may also be a single flat plate.

7 is a grease filter provided obliquely in the lower chamber _a1 ; 4b is an oil drain hole formed in the bottom plate 4 to drain oil flowing down from the grease filter;
8 is a receiver thereof, 9 is a blower case consisting of an electric motor 9a, a rotary blade 9b, and a suction port 9c, and 10 is a guide case having a duct joint _10a . The case 10 is provided in the upper rear chamber _a2 , and the blower case 9
The guide case 10 communicates with the upper and lower partition plates 2 through a hole 2a, and the lower chamber _a1 and the upper rear chamber _a2 communicate with each other through a hole 2b formed in the upper and lower partition plate 2. communicated through. Further, an exhaust duct 11 is connected to the joint 10a, and is configured to be led out to the outside through one side plate of the casing body a as shown in _FIG. A duct joint 12 is also provided on the other side plate, and a small diameter outside air supply duct 13 is connected to this joint.

Reference numeral 14 indicates a lever provided in the lower chamber _a1 so that its rear part can be rotated via a shaft 15, and its knob 14a is connected to the guide groove 1 of the lower front plate 1 described above.
It is derived from a. 16 is a strong wind switch,
Reference numeral 17 indicates a weak wind switch; when the lever 14 is lowered to the lowest position, the strong wind switch is engaged; when the lever 14 is lowered to the middle, the weak wind switch is engaged and the rotation of the electric motor 9b is controlled; The electric motor 9b is configured to be stopped when the electric motor 9b is turned off.
In Fig. 1, 1b shows the indications for strong wind position, weak wind position, and stop position, which are made on the lower front plate 1.
Although not shown, an engagement/disengagement mechanism for holding the lever 14 in this position is provided.

A plurality of outside air supply ports 18 are formed in the main front plate b, and a single air supply port 19a is formed in the back plate 19 of the air supply case _b1 . Further, a hook plate part 20 is formed at the upper part of the main front plate b, and a locking plate part 2 is formed at the lower part.
1 is formed. The hooking plate portion 20 is removably hooked onto a receiving portion 3a formed on the upper front plate 3, and the locking plate portion 21 is configured to be locked on a mounting portion 1c formed on the lower front plate 1. has been done.

3b is an upper suction port bored in the upper front plate 3;
Reference numeral 2 indicates an outside air communication port bored in the partition plate c, 22' indicates a vent hole also formed in the partition plate c, and 23 indicates a gasket fixed to the circumferential side of the outside air communication port 22.
Due to the packing 23, the lower chamber A ₁ and the upper anterior chamber A ₃
is blocked, and the outside air communication port 22 and the air supply port _{19 of the air supply case b 1} of the main front plate b are connected via the gasket 23.
a is in communication. 24 is a damper for outside air,
Reference numeral 25 indicates an upper suction damper, and the outside air damper 24 is connected to the outside air communication port ₂ in the upper rear chamber a2.
2 via a shaft 26, and the upper suction damper 25 is provided via a shaft 27 to the upper suction port _3b in the upper front chamber a3.

The lever 14 and the damper 24 for fresh air are connected via a rod 28, the damper 24 for fresh air and the upper suction damper 25 are connected via a rod 29, and the damper 5 for lower suction and the rod 28 are connected via a wire 30. connected. Further, the partition plate c is removably installed on the front surface of the upper rear chamber _a2 by screws 31.

In FIGS. 1 and 2, d is a microwave stand, e is a gas range, and f is a boiler.

In the configuration described above, by lowering the lever 14 from the imaginary line position to the position of the strong wind switch 16, the lower suction damper 5 is fully opened, and the outside air damper 24 and the upper suction are opened via the rods 28 and 29. damper 25 is fully opened, and at the same time the electric motor 9a begins to rotate and the rotary blades 9b open the lower suction port 4a, the upper suction port 3b, and the ventilation port 2 of the partition plate c.
2', through the opening 2b of the upper and lower partition plate 2, gas and smoke from the gas range e and boiler f are sucked in, and the amount stagnant near the ceiling is also sucked in as shown by the arrow. The air is discharged outdoors from the exhaust duct 11 via the suction port 9c of the blower case 9, the ventilation port 2a of the upper and lower partition plates 2, and the guide case 10, but in this case, the lower suction port 4a is connected to the bottom plate of the casing body a. 4, and because the lower suction damper 5 is tilted forward, indoor air is sucked diagonally or horizontally as shown by the large arrow in Figure 2 under a high suction wind speed. In rare cases, gas and smoke from the gas range e and boiler f are sucked into the suction air, and in other words, indoor contaminated air can be exhausted extremely efficiently using an electric motor with the same power as conventional ones. . Furthermore, by opening the outside air damper 24, outside air is supplied into the room from the outside air duct 13 through the outside air communication port 22 of the partition plate c, the air supply port 19a of the air supply case _b1 , and the outside air supply port 18. The indoor air is kept clean due to the circulation effect of the above-mentioned large suction wind speed and discharge of indoor contaminated air.

Further, such an effect can be obtained when the lever 14 is raised to the intermediate position, the electric motor 9a is decelerated via the weak wind switch 17, and the lower suction damper 5 and the upper suction damper 25 are placed in a half-open state. It can also be obtained in Then lever 1
4 to the highest position, the electric motor 9a is stopped, and at the same time, the lower suction damper 5, the outside air damper 24, and the upper suction damper 25 are completely closed, preventing any outside air or noise from entering. It is something that will be done.

Furthermore, when initially installing, cleaning, or repairing the device of the present invention, the main front plate b and partition plate c are removed to expose the joint 10a of the guide case 10, and the exhaust duct 11 is then connected to the joint 10a. It is easy to connect and disconnect, and furthermore, the grease filter 7 can be easily attached and detached, so maintenance and inspection of the blower 9 can be easily performed.

Although one embodiment of the device of the present invention has been described above, the present invention is not limited thereto, and the design may be modified as described below.

() Without connecting the lower suction damper 5 to the rod 28 via the wire 30,
Alternatively, it may be directly connected to the lever 14 via another rod.

() The lever 14 may be actuated in multiple stages or steplessly, and accordingly, the blower 9 may be driven and the lower suction damper 25 may be opened and closed in multiple steps or steplessly.

This invention consists of an upper suction damper for the upper suction port,
The outside air damper at the outside air communication port and the lower suction damper at the lower suction port, which is formed on the bottom plate of the casing body with a depth approximately half the depth of the bottom plate, are used to rotate the lever for driving and stopping the blower. (a) When in use, the high suction wind velocity generated at the lower suction port allows for efficient suction and exhaust of indoor contaminated air, while also supplying outside air to the indoor air. It can be kept in a comfortable condition for cooking.

In addition, due to the generation of a large suction wind speed, a small power motor is sufficient for the blower, which can reduce power consumption and noise.

(b) Since each damper is closed when not in use, it is possible to prevent outside air and noise from entering the room.

(c) Since the depth of the casing body is smaller than the depth of the cooker, the indoor space is not narrowed and the cook does not feel nervous.

[Brief explanation of the drawing]

The drawings show an embodiment of the ventilation fan device for kitchens according to the present invention, in which Fig. 1 is a front view showing an example of the installed state, Fig. 2 is a side view of the same, and Fig. 3 is a longitudinal sectional view. . a...Casing body, b...Main front plate, c...
...Partition plate, 1...Lower front plate, 3...Upper front plate, 3b...Upper suction port, 4...Bottom plate, 4a...
Lower suction port, 5... Lower suction damper, 9...
Blower, 10...Guide case, 10a...Joint, 11...Exhaust duct, 14...Lever, 2
5... Upper suction damper.

Claims (1)

[Scope of Claim for Utility Model Registration] A blower case having a suction port is provided inside the casing body of a hood whose depth dimension is smaller than that of the cooking device, and it communicates with the blower case and connects with an exhaust duct. A guide case having a joint is provided, the main front plate of the air supply case is removably provided between the upper front plate and the lower front plate formed on the casing body, and a ventilation hole and outside air are provided behind the air supply case. A partition plate having a communication port for air is removably provided on the casing body, an upper suction damper is rotatably provided for the upper suction port formed in the upper front plate, and an outside air damper is rotatably provided for the outside air communication port. In addition, a lower suction damper that is tilted forward in a fully open position is rotatably provided at a lower suction port formed on the bottom plate of the casing body to have a depth that is approximately 1/2 of the depth of the bottom plate; A ventilation fan device for a kitchen, characterized in that a damper, an outside air damper, and a lower suction damper are simultaneously opened and closed in conjunction with each other, and a lever for driving and stopping a blower is rotatably provided.