JPH1038339A - Cooking oil smoke purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dirt from sticking to a wall and a ceiling, wherein a blower is disposed in a hood having an open-ended lower surface such that the suction side thereof is directed toward the inside of the hood, a filter is disposed in the hood such that it is located upstream of the blower, and sucked air which is free from oil smoke and vapor is blown into a room. SOLUTION: A flat-type hood 1 having an opening 1a at a lower face thereof is provided with a rectangular opening at a central portion of a top plate thereof. A brim around the rectangular opening is protruded upwardly so as to form a sleeve 1c which is integral with the hood 1. A blower 2 is disposed in the sleeve portion 1c such that a suction side 201 thereof is directed to the inside of the hood 1 and a filter 3 is disposed upstream of the blower 2. This filter 3 purifies sucked air by absorbing and removing fat and oil, vapors and the like and the purified air is blown into a room from a blow-off opening 202 of the blower 2. Due to such a construction, dirt is prevented from sticking to a wall and a ceiling so that a kitchen can be kept clean and hygienic.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking oil smoke purifying apparatus for purifying cooking oil smoke generated when cooking with a cooking appliance such as a gas stove and discharging the cooking oil smoke into a room.

[0002]

2. Description of the Related Art The spread of range hood fans as local exhaust in Japan began in the 1960s. Before and after that, without using a range hood fan, use a general ventilation fan to combine the indoor ventilation of the entire kitchen room with oil smoke, combustion waste gas, steam, odor, etc. generated during cooking outdoors. To be discharged. Among them, there is a case where the position of the ventilation fan B is attached to the outer wall 9 of the kitchen room A as shown in FIG. doing.

[0003]

In the case described above, oily smoke, combustion waste gas, steam, odor and the like generated by cooking spread in the room and contaminate the walls and ceilings, so that cleaning is difficult.
They also cause mold and the like, and have a problem in hygiene. In such a case, a range hood fan is installed directly above the cooking utensil separately from the above-mentioned ventilation fan to collect oil smoke, combustion waste gas, steam, odor, etc. generated by cooking, and to open the outside via a duct. However, depending on the structure of the building (for example, reinforced concrete), the installation work of the range hood fan is difficult, and even if the work can be performed, the cost is considerably increased.

[0004] The present invention has been made in view of the above-mentioned problems of the prior art.
It is an object of the present invention to provide a purifying apparatus which can be easily installed in the above case, can prevent the wall and ceiling from being stained, and can keep the kitchen clean and sanitary.

[0005]

The technical means taken by the present invention to achieve the above object is to dispose a suction side of a blower in a hood having an open lower surface so as to face the inside of the hood. A filter is arranged on the upstream side of the blower in the inside, and the oil and fats, steam and the like are removed from the cooking oil smoke and discharged into the room. The above-mentioned hood may be either a flat type hood having an opening covering the upper side of the cooking utensil, or a deep type (boot type) type in which a back plate and left and right side plates of the hood extend downward (to the cooking utensil side). A blower is attached to a top plate of the hood, and the hood is fixed to a wall via a mounting bracket and is installed almost directly above the cooking utensil.
Further, as a fan of the blower mounted on the hood, various fans used in blowers today, such as a propeller fan, a multi-blade fan, a turbo fan, and the like can be used.

Here, the direction of discharge from the blower may be any direction. However, if the blown air flow collides directly with the ceiling surface, the ceiling surface will be stained. If you consider efficient exhaust with a ventilating fan, purify and decelerate the discharged air again through the filter and discharge it. Or avoid the ceiling direction and direct it horizontally and horizontally (including the direction of the ventilation fan) that intersects the axis of the blower. It is effective to exhaust. For this purpose, a filter is attached to the discharge side of the blower to remove oil and grease and reduce the discharge airflow in two stages, or a wind direction change plate is attached to the discharge port to make the discharge wind direction orthogonal to the axis of the discharge port. Make it almost horizontal.
As an attachment form of the wind direction changing plate, for example, a flat plate is attached to the discharge port at right angles. Also, an exhaust pipe having an exhaust port in a direction perpendicular to the axis of the discharge port is detachably attached to the discharge port of the blower, and the direction of the exhaust flow is changed by changing the direction of the exhaust pipe. Is also good.

Further, a filter for removing oils and fats contained in oil smoke, combustion waste gas, steam and the like may be provided not only on the suction side of the blower but also on the discharge side of the blower. The filter may be provided in an exhaust pipe attached to the discharge side of the blower. As a filter to be mounted on a hood, a blower, or an exhaust pipe, any of filters used for a range hood or a ventilation fan today may be used. The formed filter (actual fairness 2
-43456). The filter provided on the discharge side is not limited to a filter for removing oils and fats, but may be a filter including activated carbon or the like for removing odor.

In the case where the hood is of a flat type, a wall dirt prevention plate is provided at the lower end of the hood to prevent the wall surface to which the hood is attached from being stained by oil smoke, combustion waste gas, etc. generated by cooking. It is preferable that the overflow prevention plates connected to both side edges of the dirt prevention plate for preventing the exhaust air from overflowing to the left and right before reaching the hood are connected and arranged in a flat U-shape except for the near side.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a cross-sectional view showing an example of the cooking oil and smoke purifying apparatus according to claims 1 and 3, wherein 1 is a flat type hood having an opening 1a on the lower surface.
A square opening is formed at the center of the top plate 1b, and the edge of the opening protrudes upward to integrally form a cylindrical portion 1c. In the cylindrical portion 1c, the blower 2 connects the suction side 201 to the hood. 1. A filter 3 is arranged in the hood 1 on the upstream side of the blower 2 (below the blower in the drawing).

The blower 2 installed in the hood 1 is composed of a motor 2a and a propeller fan 2b, and a suction guide plate 4 is mounted around the propeller fan 2b. The blower 2 installed in the hood 1 is not limited to the illustrated propeller fan, but may be a blower equipped with a multi-blade fan or a turbo fan. With the above configuration, the oil smoke and the combustion waste gas generated by cooking are sucked into the hood 1 by the suction action of the operation of the blower and the rising airflow of the combustion waste gas itself, and pass through the filter 3 to thereby produce the oil smoke and the combustion waste gas. Fats and oils in gas,
Water vapor and the like are absorbed and removed, and the purified air is discharged into the room from the discharge port 202 of the blower 2.

Since the discharge port 202 of the blower 2 is aligned with the axis of the suction port, when the apparatus is mounted almost horizontally just above the cooking utensil, the discharge airflow is exhausted toward the ceiling. If the ventilation fan B attached to the outer wall 9 of the kitchen room A reduces the efficiency of exhausting the discharged air to the outside, the wind direction changing plate 5 is attached to the discharge port 202 of the blower 2 as shown in FIG. Attaching, changing the direction of the discharge airflow to a horizontal direction that intersects the blower's axis at a substantially right angle and decelerates the discharge airflow by colliding with the wind direction change plate,
The discharge airflow is prevented from directly colliding with the ceiling surface, thereby preventing the ceiling surface from becoming dirty. The wind direction changing plate 5 is attached to the front end of a mounting frame 5a which can be fitted to the outside of the cylindrical portion 1c of the hood 1.
The flat plate 5b, which is larger than the outer shape in plan view, is mounted substantially horizontally. The exhaust port 5c formed in the lower attachment frame 5a of the flat plate 5b may be formed on each surface, or may be formed on one surface facing a ventilation fan attached to a wall surface. Further, a filter 3 'similar to that provided on the suction side may be arranged on the discharge port 202 side of the blower 2 to remove oils and fats, water vapor, and the like in two stages, thereby increasing the removal efficiency. Further, the filter 3 'is not limited to a filter for removing oils and fats, and may be a filter including activated carbon or the like for removing odor.

FIGS. 3 to 6 show an embodiment relating to the invention as set forth in claims 4 to 6, wherein a hood 1 and a blower 2 mounted on the hood 1 are the same as those in the previously described embodiment. Therefore, detailed description will be omitted, and the exhaust pipe 6 attached to the discharge side of the blower 2 and the dirt prevention plate 7 and the overflow prevention plate 8 provided continuously below the hood 1 will be described. The exhaust tube 6 is formed as a square tube that can be removably fitted to the outside of a tube portion 1c that protrudes from the top plate 1b of the hood 1 and has a surface that intersects at right angles with the axis of the square tube. Exhaust port 601
The filter 3 ″ is detachably attached to the exhaust port 601. When the filter 3 ″ is attached to the exhaust pipe 6, it is necessary to equip the discharge port 202 of the blower 2 with the filter 3 ′. There is no. Further, a peripheral wall of the exhaust pipe 6 facing the exhaust port 601 is formed in an arc surface so as to guide the air blown by the blower 2 toward the exhaust port 601. With the above structure, the exhaust pipe 6 can be discharged toward the ventilation fan by mounting the exhaust pipe 6 with the surface of the exhaust port 601 facing the direction of the ventilation fan B installed on the wall 9 of the kitchen room A or the like. The efficiency of exhaust air to the outside can be increased. Although the exhaust tube 6 is a square tube in accordance with the cylindrical portion 1c protruding from the hood 1, it is needless to say that the cylindrical portion 1c of the hood 1 is a circular tube and the exhaust tube 6 is formed in a cylindrical shape in accordance with the circular tube. is there.

On the lower side of the hood 1, a dirt preventive plate 7 for preventing a wall (rear wall) 9 'standing upright behind the cooking utensil from being stained with oil smoke or the like, and left and right sides of the dirt preventive plate 7 are provided. An overflow prevention plate 8 for preventing oil smoke, combustion waste gas and the like generated by cooking from diffusing to the left and right before reaching the hood 1 is formed and connected in a substantially U-shape in plan view. In addition, the left and right overflow prevention plates 8 are formed in a substantially right-angled triangle with a cut-out front side to facilitate the cooking operation as shown in the figure, but the shape is not limited to this, and may be a rectangular shape. Good.

[0014]

According to the cooking oil smoke purifying apparatus of the present invention, oil smoke, combustion waste gas, steam and odor generated by cooking are removed, and the purified air is discharged into the room. , Can prevent dirt on the ceiling, etc., clean the kitchen,
It can be kept hygienic. Moreover, since the above device does not require large-scale construction such as duct piping, and simply mounts a hood equipped with a blower above the cooking utensil and attaches it to a wall, it can be easily installed regardless of the building structure. . Further, according to the configuration of the second and fifth aspects, the removal of the oil and fat can be performed at two points on the suction side and the discharge side, thereby increasing the efficiency of removing the oil and fat. The air purified by the configuration of claim 3 is discharged in a substantially horizontal direction without being directly discharged to the ceiling side by the wind direction changing plate, so that the ceiling surface can be prevented from being stained,
It is possible to increase the efficiency of exhaust air to the outside by the existing ventilation fan. Furthermore, according to the configuration of the fourth aspect, since the air can be positively discharged toward the existing ventilation fan, the exhaust efficiency to the outdoors can be further improved. Claim 6
The structure described in (1) can prevent the wall behind the cooking utensil from becoming dirty, and prevent oil smoke, combustion waste gas, and the like generated by cooking from diffusing to the left and right before reaching the hood and leading the hood to the hood. Therefore, the effect of collecting oil smoke and combustion waste gas can be enhanced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a kitchen room equipped with a ventilation fan for indoor ventilation.

FIG. 2 is a cross-sectional view showing an example of an embodiment of a cooking oil smoke purification device according to the present invention.

FIG. 3 is an explanatory view showing a state where a purification device is installed in the kitchen room of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line (4)-(4) in FIG.

FIG. 5 is a sectional view taken along the line (5)-(5) of FIG.

6 is a partially cutaway perspective view of the purification device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hood 2 ... Blower 3, 3 ', 3 "... Filter 5 ... Wind direction change board 6 ... Exhaust cylinder 7 ... Dirt prevention plate 8 ... Overflow prevention plate

Claims (6)

[Claims] 1. A hood having an open bottom surface, wherein a suction side of a blower is disposed toward the inside of the hood, and a filter is disposed upstream of the blower in the hood to remove oil, fat, steam, etc. from cooking oil smoke. A cooking oil and smoke purifying apparatus characterized in that the cooking oil and smoke are discharged into a room after being discharged. 2. The cooking oil and smoke purifying apparatus according to claim 1, wherein a filter is arranged on a discharge side of the blower. 3. The cooking oil and smoke purifying apparatus according to claim 1, wherein a wind direction changing plate is attached to a discharge port of the blower, and a direction of the discharge wind is set to a substantially horizontal direction orthogonal to an axis of the discharge port. apparatus. 4. An exhaust pipe having an exhaust port in a direction perpendicular to the axis of the discharge port is attached to a discharge port of the blower so that a direction of an exhaust flow can be changed. Cooking oil smoke purification equipment. 5. The cooking oil and smoke purifying apparatus according to claim 4, wherein a filter disposed on the discharge side of the blower is provided at an exhaust port of an exhaust pipe. 6. An antifouling plate for covering a wall surface to which the hood is attached, below the hood, and an antifouling plate for preventing exhaust generated by cooking from overflowing right and left before reaching the hood. The cooking oil smoke purifying device according to any one of claims 1 to 5, wherein the overflow prevention plates connected to both side edges are connected and arranged in a flat U-shape except for the near side.