JP2002228222A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood in which soot can be captured and discharged outdoors surely. SOLUTION: The range hood 10 comprises a hood body 11 disposed above a cooking unit, e.g. a range, installed in the kitchen and capturing exhaust gas containing soot generated from a cooker on the cooking unit, a suction fan 12 disposed in the hood body 11, and an exhaust duct 13 for discharging exhaust gas containing soot captured by the suction fan 12 outdoors. A circulation flow ventilation passage 20 having an introduction opening opening immediately in front of the exhaust duct 13 and an ejection opening 22 opening to the lower section of the hood body 11 is formed on the hood body 11 side. Exhaust opening of the suction fan 12 is opened to the exhaust duct 13 side and to the introduction opening 21 so that an air curtain can be formed at the lower section of the hood body 11 by a part of exhaust gas containing soot sucked by the suction fan 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range in which exhaust gas containing oil smoke generated when cooking is performed by a gas range or the like installed in a kitchen or a cooking place is discharged outside through an exhaust duct. It's about food.

[0002]

2. Description of the Related Art When cooking with a gas range or the like, cooking oil fogs or vaporizes by cooking from a gas range, as well as fried or stir-fry or tempura, as well as exhaust gas from combustion. Also, “oil smoke” is generated. If this oil fume is not discharged outside while it is in a vaporized or mist state, it will adhere to the surface of furniture placed on the walls of rooms, kitchens, etc. You will get dirty.

Therefore, as shown schematically in FIG. 6, such exhaust gas containing oily smoke may be discharged to the outside early by a conventional range hood having a suction fan therein. It has been done. In this conventional range hood, oil smoke is collected in a state of oil droplets by a filter provided in the hood body, and is guided into an oil tray. The collected oil droplets are also guided to the fan body.

According to the conventional range hood illustrated in FIG. 6, if the exhaust gas containing oil smoke rises in a stable state with a small amount, the exhaust gas to the outside and the collection of the oil smoke are sufficient. This is something that can be done and is useful.

[0005] However, if, for example, wet vegetables are thrown into the frying pan at once, a kind of steam explosion occurs in the frying pan, and the exhaust gas containing oil smoke and water vapor blows up. In the conventional range hood, the exhaust gas that has blown out escapes to the outside of the hood because there is nothing on the hood body side to prevent the exhaust gas, and the oil smoke contained therein Will spread throughout the room.

[0006] In other words, in the conventional range hood, when the exhaust gas containing the oil smoke rises significantly, it is impossible to collect the oil smoke sufficiently, and the room and the furniture are soiled. It is. This phenomenon in which exhaust gas containing oil smoke rises greatly occurs when food is suddenly put into a cooking device. Depending on the family composition, this phenomenon occurs twice or three times a day, and occurs in restaurants and the like. In a kitchen, it could well be hundreds of times a day.

In particular, this type of range hood has a security standard that it must be arranged at least 80 cm away from the upper surface of the cooking device, which is the upper end of the flame, and the exhaust gas containing oil smoke spreads and the range of the hood body increases. It is easy to ascend to the outside.

Therefore, the present inventor has conducted various studies on how to collect all exhaust gas including oil fumes that have risen significantly, and as a result, The inventor of the present invention has realized that it is only necessary to effectively use an exhaust device for a kitchen (such as Japanese Patent No. 2609208) developed by himself.

[0009]

SUMMARY OF THE INVENTION The present invention has been made on the basis of the above circumstances, and the problem to be solved is that even if the exhaust gas contains oil smoke which rises suddenly and greatly, The entirety of the hood should be surely guided into the hood main body so that the hood can be effectively discharged outside.

That is, the object of the present invention is to
A part of the exhaust gas sucked by the suction fan is guided to the lower edge of the hood main body so as to form an “air curtain” by the exhaust gas. It is an object of the present invention to provide a range hood which can be prevented from flowing outside, and can reliably collect oily smoke and the like and discharge it to the outside.

[0011]

Means for Solving the Problems In order to solve the above problems, first, means according to the first aspect of the present invention will be described with reference numerals used in the following description of embodiments. "Cooking device 30 such as a range installed in a kitchen or the like
And a cooking device 31 on the cooking device 30
A hood body 11 for collecting exhaust gas containing oily smoke generated from the hood and the like, and a suction fan 1 provided in the hood body 11
2, a range hood 10 having an exhaust duct 13 for exhausting exhaust gas containing oil smoke collected by the suction fan 12 to the outside, and an inlet 21 opening to the hood main body 11 side immediately before the exhaust duct 13; A circular circulation air path 20 having a spout 22 opening at a lower portion of the hood main body 11 is formed, and an outlet 12 a of the suction fan 12 is
By opening the exhaust duct 13 and the introduction port 21, the air curtain 20 a due to a part of the exhaust gas containing the oil smoke sucked by the suction fan 12 is moved.
Range hood 10 "characterized in that it can be formed at the lower part of the range hood.

That is, as shown in FIGS. 1 to 3, the range hood 10 according to the first aspect has a ring provided inside the hood main body 11 at a discharge port 12 a of a suction fan 12 built in the hood main body 11. The inlet 21 of the circulation air passage 20 and the inner ends of the exhaust duct 13 are connected to each other, and the outlet 22 of the circulation air passage 20 is opened mainly at the lower front inside of the hood body 11. . In the range hood 10 as in the embodiment described below, the diameter 10
By reducing the opening area of the inlet 21 on the side of the air curtain 20a with respect to the exhaust duct 13 cm, about 65% of the exhaust gas containing oil smoke discharged from the outlet 12a of the suction fan 12 is exhausted. The exhaust gas containing the remaining 35% of oil smoke is discharged into the circulation air passage 20 through the duct 13 to be discharged outside. In addition,
When the diameter of the exhaust duct 13 exceeds 10 cm, as shown in FIG.
By providing a, the amount of discharge to the exhaust duct 13 as described above is adjusted by externally adjusting the opening and closing amount of the damper 13a.

As shown in FIGS. 1 to 3, the circulation air passage 20 into which 35% of the exhaust gas containing oily smoke is sent has an outlet 22 extending over substantially the entire inner lower edge of the hood main body 11. As shown by the hatched arrow in the drawing, the exhaust gas 35 containing the oily smoke is directed downward from the outlet 22 toward the lower side of the range hood 10.
%. That is, as shown in FIGS. 2 and 3, the air curtain 20 a formed by the exhaust gas containing the oily smoke ejected from the ejection port 22 through the annular circulation air path 20 is formed at least below the front surface of the hood main body 11. It will be.

The fact that the air curtain 20a is formed below the front surface of the hood body 11 means that the suction fan 12
2 and FIG. 3 indicate that the exhaust gas containing oil smoke is now being sucked, and the exhaust gas containing oil smoke inside the air curtain 20a is sucked. Also, the exhaust gas including the oily smoke constituting the air curtain 20a is also sucked into the range hood 10 by the suction fan 12. Of course, the indoor air outside the lower part of the air curtain 20a is also sucked by the suction fan 12 together with the exhaust gas containing oil smoke generated from the cooking device 30 side.

As described above, the air curtain 20a is formed by 35% of the exhaust gas containing the sucked oil smoke, and the next exhaust gas and the indoor air containing the oil smoke can be sucked together with the air curtain 20a. Patent No. 260
This is because the suction fan 12 proposed in US Pat. No. 9208 and the like was used. The suction fan 12 is provided with two sirocco fans on both sides of one drive motor as shown by a dotted line in FIG. 1 and each blade thereof is inclined so as to have a small diameter toward the drive motor. The noise is reduced to increase the static pressure.

The suction fan 12 sucks and discharges exhaust gas containing oily smoke and the air curtain 20a.
Is formed, the cooking device 31 on the cooking device 30
Even if the exhaust gas containing oily smoke suddenly rises greatly, the exhaust gas containing the oily smoke is surrounded by the air curtain 20a and diffused by the flow of the indoor air flowing into the lower side of the hood body 11. Is blocked.
For this reason, even if the exhaust gas containing oil smoke rises suddenly, the whole is completely wrapped by the air curtain 20a and the like, and is surely guided into the hood main body 11.

Therefore, the range hood 10 according to claim 1
Guides a part of the exhaust gas sucked by the suction fan 12 to the lower edge of the hood body 11 so as to form an “air curtain” by the exhaust gas. The gas can be prevented from flowing out of the hood main body 11, so that oil fumes and the like can be reliably collected and discharged outdoors.

[0018] In order to solve the above-mentioned problem, a means adopted by the invention according to claim 2 is the range hood 1 according to claim 1.
0 means that the spout 22 of the circular circulation air passage 20 is opened inside the hood main body 11.

That is, the range hood 1 according to claim 2
Numeral 0 designates the outlet 22 of the circulation air passage 20 opened inside the lower end opening of the hood main body 11 as shown in FIG.
1 is located inside the outer periphery of the lower end opening.

Therefore, the range hood 10 according to claim 2 is provided.
The air curtain 20a made of exhaust gas containing oily smoke can be formed inside the hood main body 11, so that the suction fan 12 can surely perform suction again, and exhaust gas containing oily smoke can be obtained. This makes it possible to prevent the gas from diffusing into the room at all times.

Further, in order to solve the above-mentioned problem, a means adopted by the invention according to claim 3 is that the range hood 10 according to claim 1 or 2 is described as follows. That is, the opening is provided at the entire lower edge of the front surface of the main body 11 and at the front of the lower portion on both left and right sides.

That is, the range hood 10 according to claim 3
As shown in FIG. 1, the outlet 22 of the annular circulation air passage 20 is used not only for the entire lower front edge of the hood main body 11 but also for FIG.
As shown in FIG. 4, the side of the hood main body 11 is also opened at the front part thereof. For this reason, the inside of the side of the hood main body 11 of the range hood 10 is shown in FIG. As the side spout 23
Is formed. By doing so, the cross-sectional shape of the formed air curtain 20a can be changed by the cooking device 30.
It is possible to form a substantially "U" -shape so as to enclose the entire upper portion, thereby sufficiently enclosing the exhaust gas including the oil smoke rising rapidly.

Therefore, the range hood 10 according to claim 3 is provided.
According to the present invention, it is possible to more reliably prevent the exhaust gas containing the oil smoke from diffusing out of the hood main body 11, and to more surely collect the oil smoke and the like and discharge it to the outside.

Of course, in any of the range hoods 10 described above, since the filter 14 is provided around the suction fan 12 for collecting oil fumes into oil droplets, oil fumes in exhaust gas containing oil fumes are It goes without saying that the air is not only discharged from the exhaust duct 13 but also collected by the filter 14.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a range hood according to a first embodiment of the present invention; It substantially includes the invention of each claim.

FIG. 1 shows a range hood 10 according to the present invention.
The range hood 10 is shown in FIG.
As shown in FIG. 2, the hood has a hood main body 11 which is attached using a wall or a ceiling of a kitchen or a kitchen, and the hood main body 11 is a cooker 31 on the cooking device 30 shown in FIG.
It opens to the like. Of course, the lower end of the food main body 11 is separated from the cooking device 30 by 80 cm or more.

Since the front side of the exhaust duct 13 connected to the upper surface of the hood body 11 is the indoor side, the front side of the exhaust duct 13 is covered by the decorative plate 17 as shown in FIGS. Covering is done.

As shown in FIGS. 1 to 3, a suction fan 12 is provided in the hood body 11, and the suction fan 12 is provided with both ends of one rotary drive shaft from the front in FIG. It has a drive motor protruding from both left and right sides as viewed, and a sirocco fan is attached to each end of the rotary drive shaft. Each sirocco fan has, as shown in FIG. 1, each blade has a smaller diameter toward the center drive motor, and has suction ports that spread in a trumpet shape on both sides of the drive motor. It is. The entire sirocco fan and drive motor are wrapped by a cover 18 with both ends of each sirocco fan open.

As shown in FIGS. 2 and 3
As shown in FIG. 2, an outlet 12a is formed, and this outlet 12a is connected to the exhaust duct 13 shown in the upper part of FIG.
It communicates with an inlet 21 of an annular circulation air passage 20 formed in the upper part of the hood main body 11. Further, a filter 14 is provided on a part of the cover 18, that is, a part facing the opening of each sirocco fan described above, as shown in FIG. 1, and the oil droplets collected by the filter 14 are provided. Is
It flows down into the oil tray 15 provided on the seat of the cover 18. As shown in FIG. 3, a lamp 16 is attached to the cover 18 so that the cooker 31 on the cooking device 30 can be illuminated by the lamp 16.

The suction fan 12 used in the present embodiment has the abilities as shown in Table 1 below, and has "low", "medium", and "strongest". Can be selected by a switch (not shown) provided on the outer surface of the hood main body 11 or the like. In addition, in the suction fan 12 of the present embodiment, as shown in Table 1, 6 out of the exhaust gas containing the oil smoke sent out from the outlet 12a thereof.
5% is discharged from the exhaust duct 13 having a diameter of 10 cm, and the remainder is sent to the inlet 21 side of the circulation air passage 20.

When the diameter of the exhaust duct 13 exceeds 10 cm, a damper 13a is provided in the exhaust duct 13 as shown in FIG.
By adjusting the opening / closing amount of 3a from outside, the amount of discharge to the exhaust duct 13 as described above is adjusted.

[0032]

[Table 1]

The circular circulation air passage 20 is composed of an upper plate attached to the inner surface of the front component plate of the hood main body 11, and a lower plate constituting the upper surface of the hood main body 11. Thus, the spout 22 is formed with the entire front lower edge of the hood main body 11 and the hood main body, as shown in FIGS. 11 at the lower front part on both left and right sides of
It is made to open as. This spout 22
Is provided with an air volume damper so that the flow velocity, direction, and amount of exhaust gas containing oil smoke spouted from the spout 22 can be adjusted.

As a result of the above-described configuration, according to the range hood 10, oil smoke rising from the cooking device 31 on the cooking device 30 is included as shown by the black arrows in FIGS. The exhaust gas is sucked by the suction fan 12, and a part of the exhaust gas including the oil smoke fills the inside of the hood body 11. At this time, by driving the suction fan 12, 65% of the exhaust gas including the oily smoke sucked is exhausted from the exhaust duct 13 to the outside, and the remaining 35% is sent into the circulation air passage 20.

The exhaust gas containing oil smoke sent into the circulation air passage 20 flows as indicated by the hatched arrows in FIGS. 2 and 3 and is discharged from the outlet 22 of the circulation air passage 20. And the air curtain 20a. The air curtain 20a envelops the exhaust gas containing the oily smoke indicated by the black arrow, and circulates toward the suction fan 12 along the flow of the exhaust gas containing the oily smoke.

[0036]

As described above in detail, in each invention, the "oil smoke generated from the cooking device 31 and the like disposed on the cooking device 30 such as a range installed in the kitchen or the like is provided. Hood body 11 that collects exhaust gas containing air
And a suction fan 12 provided in the hood main body 11,
In a range hood 10 having an exhaust duct 13 for discharging exhaust gas containing oil smoke collected by the suction fan 12 to the outside, the exhaust duct 1 is provided on the hood body 11 side.
3 and the hood body 11
Circulation air passage 20 having a spout 22 opening at the bottom of the
Is formed, and the exhaust port 12a of the suction fan 12 is opened to the exhaust duct 13 side and the introduction port 21, so that the air curtain 20a by a part of the exhaust gas containing the oil smoke sucked by the suction fan 12 is formed in the hood. In the present invention, a part of the exhaust gas sucked by the suction fan is guided to the lower edge of the hood main body, and this exhaust gas can be formed at the lower portion of the main body 11 ". By forming an "air curtain" by gas, it is possible to prevent exhaust gas containing oil smoke rising rapidly from flowing out of the hood body,
It is possible to provide a range hood capable of reliably collecting oil smoke and the like and discharging the smoke outdoors.

[Brief description of the drawings]

FIG. 1 is a front view of a range hood according to the present invention.

FIG. 2 is a vertical sectional side view showing a positional relationship between the range hood and a cooking device.

FIG. 3 is an enlarged vertical sectional side view of the range hood.

FIG. 4 is a right side view of the range hood.

FIG. 5 is a plan view of the range hood.

FIG. 6 is a vertical side view of a conventional range hood.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Range hood 11 Hood main body 12 Suction fan 12a Discharge port 13 Exhaust duct 14 Filter 15 Oil tray 16 Lamp 17 Decorative plate 18 Cover 20 Ring circulation air path 20a Air curtain 21 Inlet 22 Spout 23 Side spout 30 Cooking device 31 Cooking vessel

Claims (3)

[Claims] 1. A hood main body disposed above a cooking device such as a range installed in a kitchen or the like, for collecting exhaust gas containing oil smoke generated from a cooking device or the like on the cooking device, and a hood main body. A hood provided with a suction fan provided in the hood, and an exhaust duct for discharging the exhaust gas containing the oily smoke collected by the suction fan to the outside. Forming an annular airflow path having a spout opening at a lower portion of the hood main body, and opening a discharge port of the suction fan to the exhaust duct side and the introduction port, thereby forming the suction fan. A range hood, wherein an air curtain formed by a part of the exhaust gas containing the oil smoke sucked by the hood body can be formed at a lower portion of the hood main body. 2. The range hood according to claim 1, wherein an outlet of the circulation air passage is opened inside the hood body. 3. The hood body according to claim 1, wherein the outlet of the circulation air passage is opened at the entire front lower edge of the hood body and at the front of the lower left and right side surfaces. The described range hood.