JPH045946Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an air guide plate for a range hood fan installed in a kitchen to exhaust oil smoke, carbon monoxide, and other gases during cooking.

<Prior Art> As shown in FIGS. 5 and 6, a conventional range hood fan has a range hood fan main body 1a which has attachment ports 2 ₁ , 2 ₂ , and 2 ₃ on three sides for connecting to an exhaust duct. A fan motor 4 is fixed in the center of the interior facing downward from the top plate 1', and a turbo fan 5a is fixed to the shaft end of the fan motor with a screw 6 so as to rotate together with the shaft. A bottom plate 9a is screwed onto the lower surface of the bottom plate 1a, and an intake port 10 opened in the center is connected to the turbo fan 5a.
In addition, a guard or a grease filter 17a is attached to the intake port 10, and the installation ports 2 ₁ , 2 ₂ , 2 ₃ to the exhaust duct are connected to the central suction part of the range hood fan body 1 .
The exhaust pipe 3 is used for connection depending on the installation conditions of the installation location in point a, and other unnecessary installation ports are closed so as not to be used.

In addition, as shown in FIGS. 7 and 8, a fan motor 4 is installed inside the range hood fan main body 1b, which has a mounting port ₂₁ to the exhaust duct on one side.
At the same time, a Sirotskov fan 5b is attached to the output shaft end of the motor with a screw 6, and the Sirotskov fan 5b is covered by an eccentric fan case 7a, and an exhaust port is formed at the widest eccentric part of the fan case 7a. 8 is connected to the attachment port ₂₁ to the exhaust duct to promote exhaust air, and an intake ring 11a is attached to the center intake port on the lower surface of the fan case 7a, and grease is attached to the bottom of the range hood fan body 1b. There is one in which a bottom plate 9b to which a filter 17b is screwed is screwed.

In addition, as shown in Figures 1 to 3 of Utility Model Application No. 62-164527, a casing 6 that covers the fan 3 is provided inside the hood body, and a plurality of casings formed on the top or side surface of the hood body 1 are provided. Exhaust port 15a, 1
5b, . . . , 15f to exclude hot air, oil smoke, etc. from the kitchen.

<Problem to be solved by the invention> However, although the conventional example shown in Figs. 5 and 6 has the advantage that the direction of the duct can be adapted to the conditions of the installation site, it does not have a casing for guiding the air, and the hood fan Since the direction of airflow is regulated by the main body itself, turbulence can occur depending on the internal shape and direction of the duct, resulting in poor exhaust efficiency, and as a result, oil smoke stagnates inside the main body and is easily contaminated. Although some of the grease is collected by the grease filter, it is not enough, and since the structure is complicated, cleaning of grease and tar-like deposits adhering to the inside is not excellent.

In addition, in the examples shown in FIGS. 7 and 8, the outside of the Sirotskov fan is covered with a substantially spiral fan case, so the exhaust efficiency is improved compared to the previous example.
However, since there is only one installation port for the exhaust duct, it is difficult to adapt to the installation conditions at the installation site, and the installation direction is restricted. Moreover, the grease generated due to the accumulation of oil smoke over a long period of time can be removed from the grease filter. The cleaning efficiency of grease and tar-like deposits that adhere to the inside of the fan case, some of which are collected by this method, is extremely poor.
In practice, it is impossible to remove it sufficiently.

Furthermore, in the fan casing shown in Japanese Utility Model Application No. 62-164527, since the casing opening and the hood body form an exhaust chamber, the airflow is disturbed in this area, resulting in poor exhaust, and oil smoke accumulates, causing grease and dirt. The problem was that tar-like deposits were generated significantly and cleaning performance was poor.

In any of the above methods, since there is no means for reliably collecting grease, there is a drawback that if excess grease is present in the grease filter or inlet ring, it may drip unexpectedly.

The present invention addresses each of the drawbacks of the above-mentioned conventional examples,
The present invention provides an air guide plate for a range hood fan that has good exhaust efficiency and cleanability (grease collection means).

<Means for solving the problem> A fan motor equipped with a blower fan is installed inside the range hood fan body, which has a mounting port that can be connected to exhaust ducts in either the front or rear, left or right direction, and a grease collecting fan is installed inside the range hood fan body. A spiral ventilation guide plate having a continuous square bottom plate having grooves, grease spots, etc. is covered with the outside of the ventilation fan and removably fitted by the square bottom plate, and the exhaust gas is formed on the spiral ventilation guide plate. The opening is connected to any of the mounting ports.

<Function> A spiral air guide plate that covers the outer periphery of the air blower fan,
Since it is attached to the range hood fan body using the square bottom plate that is integrally connected to the air guide plate, it can be installed under the same conditions no matter which mounting port the exhaust port of the guide plate is connected to. The shape of the wind tunnel does not change depending on the installation direction, and the exhaust flow is maintained smoothly. In addition, since the collection groove is formed along the lower edge of the inner circumference of the guide plate, the grease scattered by the ventilation fan is removed from the guide plate. It is caught by the inner wall and gradually flows down, collected by a collection groove at its lower end, and stored in a removable pot.

<Embodiment> Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in the drawings.As shown in _Figs .
A fan motor ₄ with a blower fan (either a Sirotskov fan or a turbo fan) 5 fixed to the end of the drive shaft with a screw 6 is set on the bottom surface of the top plate 1 _' of the range hood fan body 1 provided with the fan 2 and 2 3. Into the opening formed on the lower surface of the range hood fan main body 1, a spiral air guide plate 7 having a square bottom plate 9 eccentrically connected to the lower end thereof is inserted. The outer periphery of the blower fan 5 is removed and installed. That is, a bottom plate 9 having a square outer shape is offset and integrated with the lower edge 7' of the air guide plate 7 by spot welding or seamless welding, and the inner periphery of the lower end of the air guide plate 7 on the bottom plate 9. A grease collecting groove 11 inclined to one side is formed in a portion that coincides with the inclined collecting groove 11.
An outflow port 12 is bored at the lowest position, and a grease cup 13 is freely attached to and detached from the bottom surface of the outflow port 12. The bottom plate 9 is connected to the exhaust pipe 3 fitted in the opening 2 ₁ , and the bottom plate 9 is attached to the bottom opening of the range hood fan body 1 via the seal gasket 9' on the periphery.
4', insert the screw 15 and screw it in. At the same time, the upper edge of the guide plate 7 comes into close contact with the lower surface of the top plate 1' of the range hood fan main body 1 via a seal gasket 16 attached thereto to prevent oil smoke from leaking.

An intake port 10 is provided in the center of the bottom plate 9.
The grease filter 17 is mounted from the mounting hole 18 toward the screw hole 18' with screws 19.

The present invention is constructed as described above, and the operation will be described below. FIG. 1 illustrates the case where the exhaust duct is located at the rear as shown in the schematic plan view of FIG. 4 a, and the fan motor 4 to rotate the blower fan 5 in a predetermined direction, the oil smoke generated from the range is taken into the blower guide plate 7 from the grease filter 17 on the bottom plate 9 through the intake port 10, and is absorbed by the centrifugal force of the blower fan. Therefore, the exhaust port 8 passes through the exhaust pipe 3 to an exhaust duct (not shown).
and discharged outdoors.

While being used in this manner, the oily smoke adheres to the inner wall of the ventilation guide plate 7 and gradually flows down, and is collected in the grease collection groove 11 on the bottom plate 9 provided along the lower end position of the ventilation guide plate 7. The collection groove 11
The grease collected further flows in one direction along the slope of the collecting groove 11, and is gradually accumulated in small amounts in the grease cup 13 provided at a lower position.

The collection groove 11 is provided to prevent the grease from dripping from the grease filter, and the grease cup is periodically cleaned to prevent overflow.

Furthermore, in order to remove tar-like deposits, by removing the mounting screws 15, the air guide plate 7 can be taken out together with the bottom plate 9, and since the upper surface of the air guide plate 7 is wide open, it is easy to wipe the inside of the air guide plate 7. ,
Sufficient cleaning becomes possible.

Furthermore, if the exhaust duct is on the left side (not shown) with respect to the range hood fan main body 1, the exhaust pipe 3 is fitted into the mounting opening ₂₂ as shown by the solid line in FIG. Orient the bottom plate 9 so that it is on the left side, and if the exhaust duct is on the right side, fit the exhaust pipe 3 into the mounting port ₂₃ as shown by the two-dot chain line in the same figure, and then install the exhaust port 8. By determining the mounting direction of the bottom plate 9 so that the bottom plate 9 is on the right side, the exhaust efficiency is not impaired and the installation conditions at each mounting location can be easily met.

Note that the above description is based only on the case where the direction of the exhaust duct is horizontal to the range hood fan body, but if you prepare an L-shaped exhaust pipe, it will be easier to connect it to the exhaust duct located above. Connections are also possible, and are not limited to the above example.

<Effects of the invention> As described above, in the present invention, by attaching the bottom plate to the bottom opening of the range hood fan body, the upper end of the ventilation guide plate is connected to the bottom surface of the top plate of the range hood fan body through seal packing. According to the first aspect of the present invention, when the air guide plate is removed, the upper end of the guide plate is largely opened, so that tar-like deposits inside can be easily and reliably wiped away.

Furthermore, by making the bottom plate that supports the ventilation guide plate square, it can be rotated in 90° increments.
Accordingly, the exhaust port of the ventilation guide plate can be easily connected to the exhaust duct in any direction, and since the guide plate rotates and changes direction, the conditions of the exhaust path do not change at all. In other words, the exhaust resistance remains unchanged and exhaust can be efficiently promoted.

Also, regardless of the configuration of the range hood fan, as in the past, if the fan case was formed alone in a box shape, the upper and lower parts would have a double structure, but in the present invention, the upper and lower parts do not have such an overlapping structure. It is thinner and lighter, which simplifies the configuration and makes it easier to assemble.

Further, in claim 2, oil smoke scattered around by the rotation of the blower fan is caught by the inner wall surface of the guide plate, turns into grease, flows down the inner wall surface, and flows down through the collection groove into the grease cup. By checking the grease cup from time to time and removing the grease that accumulates inside, you can prevent unwanted dripping from the grease filter and other places, making it sanitary, and also preventing fires caused by excessive grease adhesion. It is a highly practical idea that has many excellent effects, such as preventing disasters and increasing disaster prevention effects.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, FIG. 1 is a vertical sectional side view, FIG. 2 is an exploded perspective view of the same as above, FIG. 3 is an exploded perspective view of the main part, and FIG. 4 a and FIG. 4b are schematic plan views showing examples of changes in the mounting state, and FIGS. 5 to 8 all show conventional examples,
FIG. 5 is a longitudinal sectional side view, FIG. 6 is an exploded perspective view of the same as the above, FIG. 7 is a longitudinal sectional side view showing another conventional example, and FIG. 8 is an exploded perspective view of the same. 1... Range hood fan body, 2 ₁ ′2 ₂ ′2 ₃
...Mounting port, 3...Exhaust pipe, 5...Blower fan,
7...Blower guide plate, 9...Bottom plate, 10...Intake port, 11...Collection groove, 13...Grease filter.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. On a square bottom plate with an air intake opening approximately in the middle, it is erected in a substantially spiral shape in plan view so as to cover the outer periphery of a blower fan installed in the range hood fan body. By fixing the bottom plate to the opening formed on the lower surface of the range hood fan body, the exhaust port provided on one side can be used as an alternative to one of the plurality of mounting ports provided on the range hood fan main body. A ventilation guide plate for a range hood fan, which is characterized by being compatible with and communicating with. 2. The air blow guide plate for a range hood fan according to claim 1, wherein a grease collecting groove communicating with the grease cup is provided on the inside of the connecting portion with the air blow guide plate on the bottom plate.