JP2512042Y2 - Range hood - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood, and more particularly to a range hood for efficiently exhausting fumes such as oil smoke and combustion gas.

[0002]

2. Description of the Prior Art Various types of existing range hoods have been proposed as a prior art of a range hood that has been proposed for efficiently exhausting flue gas, but a type that ejects air from the bottom of a gas stand or stove stand (combustion appliance) The two main types are the former (the former) and the type that ejects air from the range hood body (the latter). The former requires remodeling of a cabinet or the like for installing a gas stand or a stove stand separately from the main body of the range hood into a special structure, resulting in a high equipment cost and a large-scale construction work. On the other hand, the latter can simplify the construction work of the range hood body, shorten the construction period, and reduce the total cost. Conventionally, as the latter prior art, the techniques disclosed in Japanese Utility Model Publication No. 3-57336 (hereinafter referred to as A number) and Japanese Utility Model Publication No. 3-57337 (hereinafter referred to as B number) are already known. No. A has a hollow plate that connects the back plate and left and right side plates of the range hood main body to each other and extends to the gas stand, and has an L-shaped angle member on the inner surface of the extended back plate and extended left and right side plates. A structure is provided in which the outside air flowing inside the extended back plate portion and the extended left and right side plate portions is ejected along the vertical surface of the L-shaped angle member, and the three faces (extended back plate portion, extended left and right side plate portions) are provided. With the suction action of the air flow rising along it, the smoke is drawn to the wall surface side without diffusing, and in No. B, it communicates with the tips of the left and right side plate portions that extend to the gas table and are hollow inside. The sleeve plate portion is bent at a right angle, and an air blowing hole is formed in the inner surface of the tip of the sleeve plate portion, and the base of the sleeve plate portion is formed by negative pressure generated by the air flow flowing out from the sleeve plate portion. It has the effect of attracting the generated odor to the parts.

[0003]

However, in the case of such a prior art, it is necessary to secure a guide space for the outside air to be guided to the air blowing hole by making the back plate, the left and right side plates and the sleeve plate hollow inside. By reducing the thickness of the left and right side plates and reducing the frontage for work by bending the sleeve plate, the limited effective space on the gas table is reduced and cooking work using the gas table is inconvenient. It makes it dangerous. In addition, since the flow distance of the outside air is long and the pressure loss is large, and the outside air is ejected from a plurality of surfaces all at once, it is necessary to use an air supply fan having a large capacity, which causes a noise problem. Provoke.

The present invention has been made in view of the above-mentioned conventional circumstances, and its technical problem is to provide a range hood capable of effectively collecting and exhausting flue gas by the outside air ejected from the rear region of the combustion appliance. To do.

[0005]

[Means for Solving the Problems] The technical means taken to achieve the above-mentioned object is that a forced intake path for outside air is vertically provided at the back of a hood body, and the forced intake path is directed toward the center of the hood body. The gist of the present invention is to provide an air blowout portion that blows out guiding air obliquely upward. Further, it is effective if the side portion of the hood body in claim 1 is formed by a side wall portion which is hung up to a side level region of the combustion appliance. Further, it is more effective if the front half of the lower region of the side wall portion of claim 2 is constituted by a flap that can be projected and retracted forward from the rear half of the lower region.

[0006]

According to the above technical means, there are the following actions. (Claim 1) The guide negative pressure action of the guiding air that joins the smoke emitted from the rear of the combustion appliance and obliquely upward to rise in a gently inclined shape (acute angle shape) does not cause the smoke to be blown off. Effectively attracts, collects, and exhausts. (Claim 2) The side wall portion of the hood body extending up to about the height of the combustion appliance can be formed of a plate-like body in order to more reliably prevent the diffusion of smoke. (Claim 3) The first half of the lower region, which is likely to hinder the cooking work and the loading and unloading of cooking utensils (pots, frying pans, etc.) on the side wall, is eliminated as necessary.

[0007]

Since the present invention is constructed as described above, it has the following advantages. (Claim 1) From the rear side of the combustion appliance, the flue gas containing odor, waste gas, etc. is effective only by the guiding negative pressure action of the guiding air that joins with rising flue gas with a gentle slope (sharp angle). Since it is a range hood that draws in and exhausts air, it can be structurally greatly simplified while having excellent performance in collecting and collecting smoke, and a significant cost reduction can be realized.

(Claim 2) Since it is not necessary to adopt a structure in which the guiding air is blown out from other than behind the combustion appliance, a side wall extending the lateral level range of the combustion appliance to further ensure the diffusion prevention of smoke. Even if it is covered with a part, it can be dealt with with a simple flat plate, and unless the effective space on the combustion appliance is reduced, the cooking space defined between the both side wall parts can be secured as wide as possible.

(Claim 3) Moreover, in the side wall portion, if necessary, the lower half of the lower region, which may be a hindrance when carrying cooking utensils (pots, frying pans, etc.), is arranged along the latter half of the lower region. Since it can be stored in, it is possible to freely change the cooking space between both side wall parts, including the space for loading and unloading cooking utensils, in consideration of the amount of smoke emitted, the size and weight of cooking utensils (pots, pans, etc.), Usability is improved.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 3 show an embodiment of claim 1 of the present invention (hereinafter referred to as a first embodiment), and FIG. 4 shows an embodiment of claims 2 and 3 of a range hood (a second embodiment below). Respectively) are shown. First, the first embodiment will be described. Reference numeral 1 is a main body, 2 is a forced intake passage for outside air, and 3 is an air blowing portion.

The main body 1 is a casing in a hood body 51 formed in a rectangular box shape whose lower surface is opened by left and right side wall portions 11, a back wall portion 21, a top wall portion 31, and a front wall portion 41 which are formed of a metal flat plate. An exhaust device 61 composed of a motor and an exhaust fan is arranged in a housing shape, a filter 71 is obliquely attached to the front of the exhaust device 61 via a mounting frame 81, and a casing of the exhaust device 61 is attached to the chamber wall 4 Combustion equipment (stove, gas stove, etc.) 5
It has a conventionally well-known structure in which exhausted smoke 300 consisting of steam and smoke rising from cooking food, combustion gas, and odor generated from cooking food is taken in, filtered by a filter 71 and discharged to the outside.

The forced intake passage 2 for the outside air is provided so as to extend from the back wall portion 21 of the hood body 1 along the inner surface of the chamber wall 4.

The forced intake passage 2 has an inner-outer double-wall structure in which the back wall portion 21 secures a space inside, and the back wall portion 21 is extended to about the rear region of the combustion instrument 5 and is internally formed. A flexible intake pipe 12 is vertically provided over the entire length, and an upper end open portion is connected to a casing 22 in which an intake fan 7 is internally provided and an intake duct 8 protruding to the outside is connected, and a lower end thereof is connected. The air blowing part 3 is formed in the open part.

As shown in FIG. 2 and FIG. 3, the air blowing portion 3 is provided at a rear portion of the combustion instrument 5 at a height level close to the combustion instrument 5, and is connected to the lower end open portion of the intake pipe 12. It is composed of a nozzle body 13 and an airflow direction adjusting plate 23 pivotally supported in the nozzle body 13 so as to be tiltable.

The nozzle body 13 is a flat plate strip-shaped upper surface portion that closes the lower end open portion of the back wall portion 21 and connects the intake pipe 12.
A slanted surface portion 13b is continuously connected in an inclined shape from the entire length of the front edge of 13a, and a bottom surface portion 13c and a side peripheral surface portion 13d are continuously formed over the rear edge of the upper surface portion 13a and the lower edge of the slanted surface portion 13b to form an inner hollow shape. , Its slope
The air blowing small holes 13e ... Are opened in a scattered manner over the entire length of 13b.

The slope portion 13b has a desired area and is directed inward of the hood body 51, specifically, the front wall portion of the hood body 51.
The portion between the filter 41 and the filter 71 is inclined so as to face the direction facing the portion 100, and the air blowing small hole 13 is formed over the entire area.
The e-guide air 200 ejected by opening e ... in a scattered manner joins the rising smoke exhaust 300 in a gentle slope (acute angle) from the initial rising stage.

It is preferable that the amount of jet air of the above-mentioned induction air 200 is 20% to 70% of the exhaust air volume of the range hood. If it is less than that, good inductivity cannot be exhibited,
In the case of more than that, there is a possibility that the air volume exceeding the exhaust capacity of the range hood will be concentrated on the hood body 51 and the flue gas will diffuse to the outside.

The wind direction adjusting plate 23 is composed of a strip plate having a length equal to the entire length of the nozzle body 13, and the lower end portion is rotatably attached to opposite side surface portions in the nozzle body 13. The knob 23a at the upper end is projected into the room from the operation port 23b opened in the central portion of the slope 13b so that the inclination angle can be freely changed from the room, thereby ejecting from the air blowing small holes 13e. The ejection direction of the guiding air 200 can be adjusted.

Next, the operation of the range hood of the first embodiment will be described. Exhaust fumes including oil fumes, combustion gases, odors, etc. from the burner 5 and cooked materials rise toward the hood body 51 and are exhausted. It is collected by the suction action of the device 61 and exhausted. At that time, the air flow of the guide air 200 rises in the upward flow of the smoke exhaust 300 rising from the combustion device 5 and the cooking product in the upward direction.
The flue gas 300 is merged in a gently sloping shape (a sharp angle shape) so as to attract the 300, and the smoke 300 is satisfactorily entrained by the guiding negative pressure of the guiding air 200 without being blown off and guided to the hood 51,
Can be caught.

The feature of the first embodiment is that the jetting angle of the guiding air 200 jetted from the air jetting small holes 13e ... Can be freely adjusted by the tilting angle of the wind direction adjusting plate 23. As a result, the smoke exhaust 300 can be reliably trapped in the hood body 51 even under the influence of the mechanical wind (cooler, whirl, etc.) generated in the room or the natural flow from the window.

Next, the range hood of the second embodiment will be explained. In this embodiment, in order to more securely prevent the diffusion of smoke in the range hood of the above-mentioned first embodiment, the side level range of the combustion appliance is set. This is an example in which the side wall portion of the hood body is covered up to the above, and the same configuration as that of the first embodiment is disclosed except for the actual structure of the side wall portion of the hood body. Is omitted.

The left and right side wall portions 11 of the hood body 51 are extended to the lateral level area of the combustion appliance 5 in the form of a flat metal plate.
The lower region front half portion 11b is composed of a flap 11a that can be projected and retracted forward from the lower region rear half portion 11c.

As shown in the figure, the flap 11a has a triangular shape, and has a frictional resistance with the inner surface of the lower half of the lower region 11c that cannot be pulled out forward unless it is pulled out artificially. It is pivotally attached to the latter half 11c of the region. Further, the front edge 11c 'of the lower rear half 11c of the side wall portion 11 is inclined downwardly so as to have the same angle as the rear oblique piece 11a' so that the rear oblique piece 11a 'of the flap 11a overlaps when it is pulled out. And the flap 11a is housed in the lower half 11c of the lower region, and the side wall 11 has a large area where the side wall 11 does not get in the way when taking out the cooking tool 6 from the cooking tool 6 side or placing it on the burning appliance 5. Back space 9
Can be formed.

Although not shown, the above-mentioned hood body 51 is also provided.
The inner hollow back wall portion 21 itself is used as an intake path for the outside air, and an air blowing small hole 13e is ejected directly on the front surface of the back wall portion 21 so that the guiding air 200 merges with the smoke exhaust 300 at an acute angle.
The holes may be opened in a scattered manner. Further, although not shown, in the above embodiment, the air blowing portion 3 is formed only at the lower end portion of the forced intake passage 2, but the air blowing portion 3 is formed over a wide range over a predetermined height range including the lower end portion. It doesn't matter. In that case, the above-mentioned intake passage is formed in the back wall portion 21 having an internal double structure, and the air blowing small holes 13e ... facing the inside of the hood body 51 are opened in a predetermined range in the front surface thereof in a scattered manner. Adopt various structures.

[Brief description of drawings]

FIG. 1 is a side view of a range hood according to a first embodiment with a part cut away.

FIG. 2 is a perspective view of a main part of FIG.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 2;

FIG. 4 is a side view of a range hood according to a second embodiment with a part cut away.

[Explanation of symbols]

 1: Main body 2: Forced intake passage 51: Hood body 200: Guiding air 3: Air blowing part 5: Combustion device 11: Side wall part 11b: Lower half of the lower half 11c: Lower half of the lower half 11a: Flap 300: Smoke exhaust

Claims (3)

(57) [Scope of utility model registration request] 1. A forced intake path for outside air is vertically provided on a back portion of a hood body , and an air blowing section for ejecting guiding air is provided obliquely upward toward the center of the hood body in the forced intake path. A characteristic range hood. 2. The range hood according to claim 1, wherein a side portion of the hood body is formed by a side wall portion that extends vertically to a region of a side level of a combustion appliance. 3. The range hood according to claim 2, wherein the front half of the lower region of each of the side wall portions is formed of a flap that can be retracted from the rear half of the lower region to the front.