JP3388494B2 - Range hood fan - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood fan provided with a filter for collecting oily smoke in an exhaust path in a hood body. FIG. 6 shows a conventional configuration of a range hood fan of this type. In FIG. 6 , the hood body 1 is arranged above a range (not shown), and a main body case 3 in which a blower 2 is disposed, and a lower surface arranged below the main body case 3 And a hood 4 having an opening 4a. The inside of the main body case 3 and the inside of the hood 4 are in communication with each other, and a filter 5 for collecting oil smoke and the like is provided in the hood 4. The filter 5 has a rear end portion provided with a support portion 6 of an oil receiving cover 6 provided in the hood 4.
a and is fixed to a mounting plate 7 provided in the hood 4 with screws 8 so as to be mounted in the hood 4 in a downwardly inclined state. An operation switch 9 is provided on a front portion of the hood 4, and an operation switch 9 is provided on a front portion inside the hood 4.
The switch cover 9a is attached so as to cover from the back side. In the above configuration, when the blower 2 is operated based on the operation of the operation switch 9, the air containing oil smoke and the like flows from the lower opening 4 a of the hood 4 to the filter 5 by the blowing action of the blades 2 a of the blower 2. Then, the air is sucked into the fan casing 2b of the blower 2 and then discharged outside through an exhaust port 3a provided in the main body case 3 through a duct (not shown). At this time, when air containing oil smoke and the like passes through the filter 5, dirty substances such as oil smoke are collected by the filter 5. By the way, in such a configuration, the filter 5 is contaminated by collecting oily smoke and the like, and thus needs to be cleaned. Dirty substances such as oil smoke collected by the filter 5 gradually harden and stick to the filter 5 and cannot be easily removed. Conventionally, it takes time to clean the filter 5. Was something. Moreover, the filter 5
There was also a problem that a smell was generated from the contaminants adhered to the surface. [0005] The present invention has been made in view of the above circumstances, purpose of that is, it is possible to perform the cleaning of the filter easy, the range hood fan odors from the filter can be prevented from being generated Oh to provide a
You. [0006] According to an aspect of the present invention, in order to achieve the purpose described above, in the exhaust path in the hood body having an opening on the lower surface, filter for collecting such fume In the range hood fan, the filter includes a photocatalyst having a function of oxidizing and decomposing contaminants such as oil smoke based on receiving light including ultraviolet rays, and the hood body located below the filter. At the front, a lamp for irradiating the filter with light including ultraviolet light is provided ,
In addition, a hook portion is provided at the rear end of the filter.
Then, a filter is attached to the hood body through the hook portion.
The present invention is characterized in that a support portion that can be supported in a suspended state is provided . According to the inventions of this, although soiling substances such as oil smoke is trapped by the filter, based on the light containing ultraviolet light is irradiated to the photocatalyst provided on the filter, its soiling material It becomes oxidatively decomposed and the odor is also decomposed. Also suspend the filter
The lamp is also supported on the upper surface of the filter.
Light can be emitted, so only the bottom surface of the filter
No dirt on the upper surface
Can be decomposed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a description will be given of the present invention.
A first reference example will be described with reference to FIGS. First, in FIG. 1 showing the entire configuration, a hood main body 11 is installed above a range (not shown) of a kitchen, and a main body case 13 in which a blower 12 is disposed inside, and a main body case 13 13 and a hood 14 having an opening 14a on the lower surface. The inside of the main body case 13 and the inside of the hood 14 are in communication with each other, and a front portion of the hood 14 projects forward from the main body case 13. The blower 12
As is well known, a fan casing 15, a blade 16 composed of a centrifugal fan, and a motor (not shown) for driving the blade 16 to rotate. Body case 1
An exhaust port 13a is provided on the upper surface of 3 and a duct (not shown) is connected to the exhaust port 13a. In the hood 14 of the hood body 11,
A filter 17 for collecting oil smoke and the like is provided. The filter 17 has a rear end portion inserted into and supported by a support portion 19 of an oil receiving cover 18 provided in the hood 14, and a front end portion of the mounting plate 2 provided in the hood 14.
The hood 14 is fixed to the
It is installed in a downwardly inclined state. This filter 17 is made of, for example, punching metal,
Although not shown, a large number of ventilation holes are formed. A photocatalyst 22 made of titanium oxide is provided on the lower surface and the upper surface of the filter 17 and on the inner peripheral surface of each ventilation hole (a portion provided with the photocatalyst 22 is indicated by a thick line in FIG. 1 for convenience). The photocatalyst 22 is, for example, ST-0 (powder) manufactured by Ishihara Sangyo Co., Ltd.
1, ST-11, or ST-31, or STS series (liquid) STS-01, STS-02, or STS-11 is used, and is provided by, for example, coating the filter 17. The photocatalyst 22 has a function of adsorbing dirt substances (organic substances) such as oily smoke and is activated by receiving ultraviolet rays, and has a function of oxidatively decomposing the adsorbed dirt substances. An operation switch 23 is provided on the front of the hood 14.
A switch cover 24 is provided at the front of the hood 14 so as to cover the operation switch 23 from the back side.
Is attached. At the front inside the hood 14,
A lamp box 25 shown in FIG. 2 is attached to a switch cover 24 located below the filter 17 by screws (not shown). Inside the lamp box 25, a lamp 26 made of, for example, a straight tube fluorescent lamp for irradiating light including ultraviolet rays is provided. In addition, the lamp box 25 has an inclined rear upper surface. A glass lamp cover 27 is attached with a screw 28 so as to cover the opening 25a formed in the lamp. In the above configuration, the operation switch 2
When the blower 12 is operated based on the operation of the fan 3, the air containing the oily smoke and the like is caused to flow from the lower opening 14 a of the hood 14 by the blowing action of the blades 16 of the blower 12.
Through the fan casing 15 of the blower 12, and thereafter, the exhaust port 13 a provided in the main body case 13.
Is discharged outside through a duct. At this time, when air containing oily smoke passes through the filter 17, dirt such as oily smoke is collected by the filter 17. The dirt collected by the filter 17 is adsorbed by the photocatalyst 22. On the other hand, when the lamp 26 is turned on, the light of the lamp 26 irradiates the filter 17, and the photocatalyst 22 is activated by irradiating the photocatalyst 22 with the ultraviolet light contained in the light. The contaminants (organic substances such as oil) adsorbed on the photocatalyst 22 are oxidatively decomposed and evaporate as gas. According to the first embodiment , dirt such as oily smoke is collected by the filter 17, and the photocatalyst 22 provided on the filter 17 is irradiated with light including ultraviolet rays. As a result, the contaminants are oxidatively decomposed, so that the contaminants do not stick to the filter 17. Therefore, the filter 17 can be cleaned by a simple operation such as wiping, for example. Further, since the odor is also decomposed by the oxidative decomposition by the photocatalyst 22, the deodorizing effect is exhibited and the generation of the odor is suppressed. Further, in this case, the most contaminants such as oily smoke adhere to the lower surface of the filter 17.
Since the photocatalyst 22 is provided on the lower surface of the filter 17, it is more effective. In this case, the following method can be considered for controlling the lamp 26. For example, the fan 12 and the lamp 26 are synchronized, the lamp 26 is turned on at the same time as the operation of the blower 12 is started, and the lamp 2 is
6 is turned off, or the lamp 26 is turned off after a certain period of time after the blower 12 is stopped. Note that the method of controlling the lamp 26 can be variously modified. FIG. 3 shows a second reference for understanding the present invention.
This is an example, and the second embodiment differs from the first embodiment in the following points. That is, the photocatalyst 22 is provided also on a portion of the inner surface of the hood 14 in the hood body 11 below the filter 17 (for convenience, the portion provided with the photocatalyst 22 is indicated by thick lines and oblique lines in FIG. 3). . In the range hood fan, contaminants such as oil smoke easily adhere to the inner surface of the hood 14 located below the filter 17 in addition to the filter 17. , So that the dirt attached to it can be oxidized and decomposed,
The inner surface of the hood 14 can be easily cleaned, and the generation of odor from the inner surface of the hood 14 can be suppressed. FIG. 4 shows a third reference for understanding the present invention.
This is an example, and the third embodiment differs from the first embodiment in the following points. That is, in the lamp box 25, an opening 25b is formed on the inclined lower surface, and a glass lamp cover 29 is attached with the screw 28 so as to cover the opening 25b. In this case, when the lamp 26 is turned on, the light is radiated to the filter 17 through the lamp cover 27 and the hood body 1 through the lamp cover 29.
1 is also irradiated below. This third
According to the reference example , there is an advantage that the light around the range (not shown) can be illuminated by the light of the lamp 26. [0020] Now, FIG. 5 shows an embodiment of the present invention, the first reference example and the third real施例This is the above-mentioned
The following points are different from the reference example . That is, the filter 30 is configured to be thicker than the filter 17, and the photocatalyst 22 is provided similarly to the filter 17. At the rear end of the filter 30, an L-shaped hook portion 31 is provided. At the front end of the oil receiving cover 32, a support portion 33 having first and second holes 33a and 33b into which the hook portion 31 is inserted is provided. In this case, as shown by the solid line in FIG. 5, the filter 30 has the hook 31 formed with the first and second holes 33a.
And 33b, the front part is attached to the hood 14 by fixing the front part to the mounting plate 34 with the screws 21. The filter 30 is provided with a screw 21
As shown by a two-dot chain line in FIG. 5, the support portion 33 can be supported in a suspended state while being rotated about the hook portion 31 in the arrow A direction. . The lamp box 35 includes a filter 3
0 is attached to the position indicated by the solid line, the lamp 26
Is irradiated on the lower surface 30a of the filter 30 through the lamp cover 27, and when the filter 30 is suspended at the position indicated by the two-dot chain line, the light of the lamp 26 passes through the lamp covers 27 and 29 and The upper surface 30b is irradiated (see arrow B). According to the actual施例this, since it is possible to irradiate the lamp 26 to the upper surface 30b side of the filter 30 as required light (the ultraviolet rays), attached to the upper surface 30b side of the filter 30 Soiled substances such as oily smoke can also be oxidatively decomposed satisfactorily. In addition, since the rear end of the filter 30 can be irradiated with the light (ultraviolet light) of the lamp 26, dirty substances such as oily smoke adhering to this portion are also oxidized and decomposed more favorably than in the first reference example. be able to. The present invention is not limited to the above-described reference examples and embodiments, but can be modified or expanded as follows. For example, the hood main body 11 may be one in which the main body case 13 and the hood 14 are provided integrally. Further, the blower 12 may not be housed in the hood main body 11, but may be configured such that the blower is installed outside the hood main body. According to the range hood fan of the first aspect of the present invention, dirt such as oily smoke attached to the filter is irradiated with light containing ultraviolet rays on the photocatalyst provided on the filter. By being oxidatively decomposed based on the filter, the filter can be easily cleaned,
Odor can be suppressed from being generated from the filter. Also supports the filter in a suspended state
By irradiating the top of the filter with lamp light
Not only the bottom of the filter, but also the top
Stain that adheres to the surface can be oxidized and decomposed by the photocatalyst
It becomes so that, cleaning of the filter is to be able to more easily
As well as reduce the occurrence of odors
Become.

BRIEF DESCRIPTION OF THE DRAWINGS [Figure 1] The present invention of the whole showing a first reference example for the understanding of the vertical sectional side view FIG. 2 is a perspective view of the lamp box 3] for understand the present invention FIG. 4 is a vertical side view of a hood showing a second reference example . FIG. 4 is a vertical side view of a lamp box portion showing a third reference example for understanding the present invention. FIG. 5 is a view showing an embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 1 showing a conventional configuration. [Description of References] 11 is a hood body, 12 is a blower, 14a is an opening, 1
7 is a filter, 22 is a photocatalyst, 25 is a lamp box,
26 is a lamp, 30 is a filter, 31 is a hook, 33
The support portion, 35 is a lamp box.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-229640 (JP, A) JP-A-6-265187 (JP, A) JP-A 1-167536 (JP, U) JP-A 58-229 35734 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F ^7/ 04-7/06

Claims (1)

(57) [Claim 1] In a range hood fan having a filter for collecting oily smoke and the like in an exhaust path in a hood body having an opening on a lower surface, the filter includes an ultraviolet ray. A photocatalyst having a function of oxidizing and decomposing contaminants such as oily smoke based on receiving light containing the light is provided, and the front portion of the hood body located below the filter is irradiated with light containing ultraviolet light. the lamp is provided, in addition, co by providing the engaging portion at a rear end portion of said filter
Then, a filter is attached to the hood body through the hook portion.
A range hood fan characterized by having a support portion that can be supported in a suspended state .