JP2003004276A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood without increasing in size an apparatus for sufficiently capturing an oil mist or the like. SOLUTION: The range hood comprises a hood 4 of a substantially inverted L-shaped box installed above a cooker 1a and having an exhaust fan 13 and a supply fan 24 thereabove, an opening 3 having a depth largely at a rear side from the front surface 4b of the hood 4 to both sides 4a and opened down, and a curved surface provided at the rear side of an inner peripheral surface 9 for forming the opening 3. A supply air flow is supplied along the inner peripheral surface 9, and a rising flow directed upward is formed by the exhaust fan, and hence the unit for enhancing capturing properties is not increased in size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood for discharging oil fumes generated from a cooker side to the outside during cooking.

[0002]

2. Description of the Related Art In recent years, as the number of occasions for cooking food at home has increased, there has been an increasing demand for a range hood which improves the efficiency of collecting oil smoke generated during cooking.

Conventionally, as an example of this type of range hood, the one disclosed in Japanese Patent Laid-Open No. 2-195139 has been known. The configuration will be described below with reference to FIG.

As shown in FIG. 19, around the ventilation fan 104 having the hood 106 and the grease filter 107, four air ejection portions 103 projecting downward from the ceiling above the range 108 are provided, and the air ejection portion 103 is provided on the ceiling. It is connected by a duct 102 on the back side, and air is blown from four directions by a blower fan 101 to form a swirl of air in the central portion thereof, and above the range 108, etc., a ventilation fan 104 is provided.
The air is sucked and exhausted upward by and is discharged to the outside through the duct 105.

[0005]

In such a conventional range hood, among a plurality of fire sources provided in the range 108, depending on the position of the fire source to be used or when the ascending airflow of oil smoke is weak, The oil smoke generated from the range 108 side may be largely diffused to the outside of the air ejection portion 103 protruding downward, and there is a problem that the oil smoke cannot be sufficiently collected at this time. Further, if it is attempted to sufficiently collect the oily smoke, the air jetting portion 103 is provided on the outer side and protrudes downward, so that the apparatus becomes large and the workability of the cooker is hindered.

An object of the present invention is to solve the above-mentioned problems, and an object thereof is to provide a range hood which does not make the apparatus large in size in order to sufficiently collect oily smoke and the like.

[0007]

In the range hood of the present invention, an opening having a depth on the rear side and opened downward,
An inner peripheral surface having a curved surface is formed on the rear side to form this opening to form a hood, which blows a supply air stream so as to flow along the inner peripheral surface and which does not diffuse the oil smoke and the like inside the hood. It is configured with a range hood that is raised to and exhausted.

According to the present invention, an ascending flow is formed in which oil smoke is sucked upward while being attracted to the inner peripheral surface side by the suction force of the supply airflow and the exhaust gas flowing downward along the inner peripheral surface, Since the generated oil smoke is exhausted so as to be converged without being diffused, it is possible to provide a range hood that does not make the device large in size in order to improve the collecting property.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a range hood which is provided above a cooking device and which exhausts oil smoke and the like generated from the cooking device side. A hood is formed by providing an opening that has a depth and opens downward, and an inner peripheral surface that forms this opening and has a curved surface on the rear side, and forms a hood so as to flow along the inner peripheral surface. By configuring a range hood that raises and exhausts the oil smoke and the like into the hood without diffusing the oil smoke, the air supply flow that flows downward along the inner peripheral surface and the suction force of the exhaust gas removes the oil smoke. An upward flow that is drawn upward while being drawn toward the inner peripheral surface is formed, and the generated oil smoke is exhausted so that it converges without being diffused, and the device is not upsized in order to improve the collection performance. Provide range hood It is possible.

FIG. 1 shows an embodiment of the present invention.
~ It demonstrates, referring to FIG.

(Embodiment 1) As shown in FIGS. 1 to 5, a range hood 1b for collecting oil smoke, steam, etc. generated when cooking is performed by a cooker 1a installed in a kitchen 1. Above the cooker 1a, the wall cabinet 2
Provide in between. The range hood 1b has a hood 4, which is a substantially inverted L-shaped box body having an opening 3 below, a frame body 21 provided above the hood 4, and an exhaust fan 13 provided therein.
The frame 14 to which the motor 14 for driving the exhaust fan 13 is fixed
1, an exhaust fan casing 15 covered with 1, an air supply fan 24 provided inside, and an air supply fan casing 26 provided above the frame 21 to which a motor 25 for driving the air supply fan 24 is fixed. A duct 18 for communicating the exhaust fan 13 with the outside and a vent 30 for taking in the air on the indoor side are opened in the upper part, and the frame 21, the air supply fan casing 26, the duct 18 and the like are seen from the indoor side. It is composed of a hood 4 and a curtain plate 33 provided between the ceiling 31 for concealment.

A suction port 16a opens on the lower surface of the exhaust fan casing 15 so as to face the suction port of the exhaust fan 13,
It coincides with the exhaust ventilation port 5 opened on the lower surface of the frame body 21, and the lower side thereof is covered with a filter 17. Exhaust ventilation port 5
Exhaust port 15a of the exhaust fan casing 15 communicating with
Is communicated with the exhaust port 20 provided on the top surface of the frame body 21 by the exhaust attachment 23, the exhaust port 20 is connected to the duct 18 via the adapter 19, and the duct 18 is provided on the outer wall 32 side of the building. It is connected to the outdoor hood 34.

The suction port 16b opened on the top surface of the air supply fan casing 26 communicates with the discharge port 22 of the air supply fan casing 26, and is connected to the frame 21 via the discharge port 22 and the air supply attachment 29. An air supply port 27 that is opened and an air supply port 6 that is opened in the frame 21 and communicates with the inside of the hood 4.
An air supply ventilation passage 8 that communicates with

The hood 4 is formed in a substantially inverted L shape so that the upper portions of both side portions 4a thereof project forward from the lower portion.
The lower end surfaces 4c of the both side portions 4a are formed such that the front side thereof is positioned higher than the rear side thereof, and the front side of the upper portion of the both side portions 4a is covered with the front surface portion 4b. The side surface has a large depth toward the rear, and an inner peripheral surface 9 extending toward the cooker 1a side is formed so as to have a depth in the vertical direction toward the rear side of the hood 4, that is, toward the wall mounting surface side of the hood 4. To do. The inner peripheral surface 9 is formed such that its central portion is located rearward of its both end portions protruding toward the front side, and has a curved surface between the both end portions and is formed smoothly as a whole.

An end portion of the lower end surface 4c of the hood 4 on the wall mounting surface side is formed by an inclined surface 10 forming an obtuse angle with the wall surface so that oil smoke rising along the wall smoothly flows to the inner peripheral surface 9.

Inside the hood 4, on the front side of the inner peripheral surface 9, an air supply / discharge port 7 formed by the inner wall surface 28 and the inner peripheral surface 9 is opened. Both sides 4 of the hood 4 made of metal
The air supply air blown by the air supply fan 24 through the air supply chamber spaces 7a and 7b communicating with the air supply ventilation port 6 between the a and the inner peripheral surface 9 is supplied from the air supply outlet 7 to the inner peripheral surface 9 Is exhaled along the line. The inner wall surface 28 and the front surface of the inner peripheral surface 9 are formed substantially parallel to each other, and the air supply / discharge port 7 is formed with an opening end surface so that its upper side is located rearward of its lower side, and the inner wall surface 28 is The air supply / discharge port 7 formed by the inner wall surface 28 and the inner peripheral surface 9 is located inside the peripheral surface 9.
Opens rearward. Further, the air supply and discharge ports 7 are provided on both the left and right sides on the front side of the inner peripheral surface 9, and the opening can be opened and closed by a shield plate (not shown).

The shield plate is opened or closed manually or electrically by a driving force such as an electric shutter, and opens either the left or right air supply outlet 7 for blowing the air supply. For example, it is used to open the supply air discharge port 7 on the far side from the place where the oil smoke generated in the cooking device 1a or the like is generated, and to close the supply air discharge port 7 on the near side.

Further, the motor 1 for driving the exhaust fan 13
4, or the motor 24 that drives the air supply fan 24 is
A C motor or a DC motor whose rotation speed can be controlled is used.

In the above structure, when the range hood is operated, the air above the room is introduced into the inside of the curtain plate 33 through the ventilation hole 30 in the upper part of the curtain plate 33 by the drive of the air supply fan 24, and the air supply ventilation port is provided. The air supply chambers 7a and 7b are filled with air through the air supply ventilation passages 8 connected to the air conditioner 6. Then, the air filled in the air supply chamber spaces 7a and 7b is blown from the air supply outlet 7 to form a supply air flow C flowing downward along the inner peripheral surface 9. And as shown in FIG. 5, among the oil smoke generated when cooking with the cooker 1a, the oil smoke A on the inner peripheral surface 9 side is a cooker (not shown) in front of the cooker 1a by the air supply C. On the other hand, the oil smoke B on the cooker side tends to be sucked into the upper exhaust ventilation port 5 while being drawn toward the rear inner peripheral surface 9 side of the range hood 1b by the suction force D by the exhaust fan 13. . That is, the oil smoke and the like generated during cooking are separated from each other on the front side and the rear side of the oil smoke by the air supply C flowing by the air supply fan 24 along the inner peripheral surface 9 and the upward suction force D by the exhaust fan 13. Since the left and right forces act in opposite directions, a rotational force is formed to surround the oil smoke, the oil smoke rises without diffusion, and the oil dust is adsorbed and removed by the filter 17, and then the exhaust duct 20 is exhausted from the exhaust port 20. It will be discharged to the outside through.

Further, the inner peripheral surface 9 has a depth that increases in the vertical direction toward the wall mounting surface side of the hood 4
Since it is formed so as to extend to the a side, the portion of the inner peripheral surface 9 forming the inner peripheral surface on the cooker 1a side is an arc with a small central angle, so the air supply flow flowing along the inner peripheral surface 9 Is not restrained, and the supply air stream is blown downward and draws a large arc to reach the cooking device 1a side, is supplied so as to surround the oil smoke, and suppresses the diffusion of the oil smoke to exhibit high collecting performance. To do.

If the inner peripheral surface is formed to have a large depth even on the side opposite to the wall mounting surface, the portion of the inner peripheral surface forming the inner peripheral surface on the cooker 1a side becomes an arc having a large central angle. Therefore, the air supply flow flowing along the inner peripheral surface is largely restricted, and since the air supply air cannot draw a large arc when blown downward, the oil smoke cannot be enclosed and the oil smoke diffuses. Will be lost.

Further, when an electric cooker is used as a fire source for cooking, the ascending airflow from the heat source is smaller than that of a gas stove in which the surrounding air is heated by combustion and rises. Will slowly rise while drifting around the electric cooker, and will spread greatly to the surroundings by the time it reaches the exhaust ventilation port 5, and this diffused oily smoke will flow to the outside of the hood 4 and be collected by the range hood 1b. Instead, it will pollute the surrounding air. Further, at this time, since the temperature of the ascending airflow generated by the electric cooker which is the heat source is low, the surface of the hood 4 formed of metal is not warmed, and when oil smoke or the like generated during cooking collides with the hood 4, Condensation will occur. Therefore, when oily smoke or the like generated when cooking with an electric cooker is collected by the range hood of the present invention, the oily smoke or the like diffused by the time it reaches the exhaust ventilation port 5 is sucked upward by the supply airflow C and the suction force D. Therefore, the air is sucked up to the exhaust ventilation port 5 so as to converge without being diffused, so that the oil smoke can be exhausted without leaking to the surroundings.
Further, since the supply airflow C flows along the inner peripheral surface 9 of the hood 4, the occurrence of dew condensation can be suppressed.

As described above, according to the range hood of the first embodiment of the present invention, in the range hood which is installed above the cooking device 1a and exhausts oily smoke and the like generated from the cooking device 1a side, the exhaust fan 13 is installed upward. And the hood 4 provided with the air supply fan 24, and the front part 4b to both side parts 4a of the hood 4.
An opening 3 that has a large depth toward the rear and opens downward
And a curved surface is provided on the rear side of the inner peripheral surface 9 that forms the opening 3, and the supply airflow is sent along the inner peripheral surface 9.
Since the exhaust fan created an upward flow upward,
Due to the supply airflow that flows downward along the inner peripheral surface 9 and the upward suction force of the exhaust fan 13, the oil smoke is entrained by the supply airflow, and the upward flow is drawn upward while being drawn toward the inner peripheral surface 9 side. Is formed,
Since it is sucked into the exhaust ventilation port 5 so as to converge without being diffused, it is possible to provide a range hood having a high collecting property without increasing the size of the device. Further, since the oil smoke is sucked so as to converge on the exhaust ventilation port 5, the oil smoke does not directly collide with the inner peripheral surface 9 formed inside the hood 4, and the inner peripheral surface 9 and its periphery are less likely to be contaminated. Can provide range hood.

Further, since the inner peripheral surface 9 extending toward the cooking device 1a side is formed so that the depth becomes larger in the vertical direction toward the rear side of the hood 4, that is, toward the wall mounting surface side of the hood 4, Since the supply airflow can be reliably blown to the vicinity of the source of the oil smoke, the exhaust fan 13 can be used without spreading the oil smoke.
It is possible to create a state of oily smoke that can fully utilize the suction power of and exhaust it. Further, since the oil smoke floating on the wall mounting surface side of the hood 4 flows along the inner peripheral surface 9 toward the front side of the hood 4, the oil smoke does not touch the wall and does not stain the wall. Furthermore, it does not interfere with the operation of cooking work or the space required for extinguishing a fire.

Further, since the end portion of the lower end surface 4c of the hood 4 on the wall mounting surface side is constituted by the inclined surface 10 forming an obtuse angle with the wall surface, the oil smoke rising along the wall smoothly moves toward the inner peripheral surface 9 side. To the front side by the supply airflow blown from the supply air discharge port 7 and is exhausted by the suction force of the exhaust fan, so that the oil smoke near the wall can also be collected.

Further, since the hood 4 is formed in a substantially inverted L shape so that the upper sides of the both side portions 4a of the hood 4 project forward from the lower side, the hood 4 above the cooker 1a necessary for extinguishing a fire in the event of a fire occurs. A space can be secured, and the installation height of the hood 4 can be set to be low so that the hood 4 can be brought close to the source of oil smoke, so that the collection performance can be improved.

Further, since the supply air discharge port 7 has the opening end face so that the upper side thereof is located rearward of the lower side, the supply air flow can be blown downward in a well-balanced manner, so that the generated oil smoke is trapped. The air supply is formed and the collection effect is enhanced.

Further, since the air supply / discharge port 7 is constructed so as to open rearward, the appearance of the air supply / discharge port 7 is not visible from the cook side, and the appearance is improved.
When wiping around the area, it is difficult for fingers or the like to get caught in the opening, so a smooth wiping operation can be performed.

Further, the air supply and discharge ports 7 are provided on both the left and right front sides of the inner peripheral surface 9, and the openings can be opened and closed by a shield plate so that the air flow direction of the air supply can be switched between left and right. The supply airflow can be blown so that an appropriate exhaust condition can be obtained according to the fire source used in 1a, and good exhaust can be performed according to the generation state of oil smoke.

Further, when oily fumes and the like generated when cooking with an electric cooker are collected by the range hood of the present invention, the oily fumes and the like diffused by the time they reach the exhaust ventilation port 5 are fed to the air supply C and upward. Since it is sucked up to the exhaust ventilation port 5 so as to be converged without being diffused by the suction force D, oil smoke can be exhausted without leaking to the surroundings. In addition, the inner peripheral surface 9 of the hood 4
Since the supply airflow C flows along the flow path, it is possible to suppress the occurrence of dew condensation.

Further, the motor 1 for driving the exhaust fan 13
4 or a DC motor 24 for driving the air supply fan 24
Since it is composed of a motor, it is necessary to properly ventilate in response to the difference in the length of ducts installed in middle- and high-rise houses and detached houses, the influence of outside wind, and the change in pressure loss caused by the difference in airtightness of the building. You can Further, it is possible to perform appropriate ventilation according to the state of oil smoke generated by adjusting the air volume balance of the supply air volume or the exhaust air volume.

Further, by supplying the air above the room downward by the air supply fan 24, the air inside the room can be used as a supply air flow for circulation, and the load of air conditioning can be reduced.

If the inner peripheral surface 9 has a curved surface between both end portions and is formed smoothly as a whole, even if it has a linear flat surface, there is no difference in its function and effect.

Further, if the lower end surface 4c of the both side portions 4a is formed so that its front side is located above the rear side, it is a flat surface inclined from the front side to the rear side, and smooth from the front side to the rear side. The same effect can be obtained regardless of whether the curved surface is formed, two or more flat surfaces with different inclination angles, or a combination of stepped flat surfaces.

Further, a gas stove or an electric cooker may be used as the cooker 1a, and the wall cabinet 2 may be formed of an indoor wall surface or a side blind plate. The electric cooker referred to here means an IH cooking heater, a halogen heater, and a radiant heater.

(Embodiment 2) As shown in FIG. 6, an inner peripheral surface 9A formed on the wall mounting surface side of the hood 4A is constructed so that the lower portion is located forward than the upper portion. The other components are the same as those in the first embodiment, and the description thereof will be omitted.

In the above structure, when the range hood is operated, the air in the upper part of the room is introduced by the drive of the air supply fan 24 through the ventilation hole 30, and the air supply chamber space 7a,
Fill within 7b. Then, due to the supply airflow that is blown from the supply air discharge port 7 that is opened on only one of the left and right sides and that flows downward along the inner peripheral surface 9A, and the suction force of the exhaust fan, the oil smoke generated from the cooking device is hood 4A. The gas is drawn inward and is sucked into the upper exhaust ventilation port 5 along the inner peripheral surface 9A while being drawn toward the rear inner peripheral surface 9A of the range hood.

As described above, according to the range hood of the second embodiment of the present invention, since the inner peripheral surface 9A of the hood 4A is configured such that the lower side is located in front of the upper side, the inner side of the hood 4A is directed toward the exhaust fan 13 from the cooker. Since the oil smoke rises up to the exhaust ventilation port 5 along the inner peripheral surface 9A, the upward flow of the oil smoke is formed in a direction away from the cooker, so that the cooker can comfortably cook without dislike. You can do the work.

(Embodiment 3) As shown in FIGS. 7 and 8, the air supply / discharge ports 7A and 7B are interlocked with an operation switch of a cooking device (not shown) to automatically open and close left and right. To do. The other components are the same as those in the first embodiment, and the description thereof will be omitted.

In the above structure, when the cook uses the left-side fire source of the cooking device 1 having a plurality of fire sources, the left-side air supply / discharge port 7A is closed and the right-side air supply / discharge port 7B is opened.
The supply airflow is blown from the supply air discharge port 7B on the right side. Also, when using the right heat source of the cooker, the right air supply outlet 7
B is closed and the left air supply / discharge port 7A is opened, and the air supply air is blown from the left air supply / discharge port 7A. When the left and right fire sources of the cooker are used at the same time, only the air supply outlet on the opposite side of the heat source with a large amount of heat is opened and the air supply air is discharged.

As described above, the position of the fire source of the cooker used by the cook determines the position where the oil smoke is generated, and the ventilation method of the range hood that selects the optimum blowing direction of the air supply stream effectively causes the oil smoke. Can be discharged.

As described above, according to the range hood of the third embodiment of the present invention, the open / close state of the air supply / discharge ports 7A and 7B is selected in conjunction with the operation switch of the cooking device, so that the state of oily smoke is always applied. It is possible to blow the supplied air flow, and it is possible to prevent the oil smoke from spreading out of the hood even when any of the heat sources of the cooker having a plurality of fire sources is used, and to enhance the smoke collecting effect. In addition, the cook does not need to reach for the range hood operation switch, which is normally located at a high position, and it is possible to provide a range hood that is easy on the elderly cook.

Further, the suction force by the exhaust fan is determined by the range hood ventilation method that determines the position where oil smoke is generated from the position of the fire source of the cooker used by the cook and selects the optimum blowing direction of the air supply. It is possible to blow the supply airflow in accordance with the generation state of oily smoke so that

(Embodiment 4) As shown in FIG. 9, a suction port 16b of the air supply fan 24 is provided with a duct connection port 35a, and the duct 35 is connected to the duct connection port 35a to connect the duct 35 to the outside. Air is introduced from the outside through the air supply, and the air flow rate of the air supply and the exhaust air volume exhausted by the exhaust fan 13 are controlled to be the same. The other components are the same as those in the first embodiment, and the description thereof will be omitted.

In the above-mentioned structure, as for the oil smoke generated during cooking, the outdoor air is introduced into the air supply fan 24 through the duct 35 connected to the air supply fan 24 and is connected to the air supply vent 6. The air supply chamber spaces 7a and 7b are filled through the air supply ventilation passage 8. Then, the air is discharged from the air supply / discharge port 7 (only one of the left and right sides is opened), and this forms a supply airflow that flows along the inner peripheral surface 9. Then, while supplying the air supply, the exhaust fan 13 exhausts oil smoke and the like through the duct 18 to the outside.

As described above, according to the range hood of the fourth embodiment of the present invention, since the outdoor air is introduced as the air supply air from the air supply discharge port 7 (only one of the right and left is opened), the indoor air flow is reduced. The pressure state can be relieved, and the exhaust fan 13 can sufficiently exhibit its performance.

Further, since the supply air amount and the exhaust air amount are controlled so as to be the same, it is not necessary to introduce the supply air from the outside, and good trapping property can be obtained even in a highly airtight house. Further, it is possible to obtain a kitchen space that does not change the air environment of other rooms.

(Embodiment 5) As shown in FIG. 10, a box-shaped frame 21A is provided above the hood 4 so as to enclose the exhaust casing 15 and the lower side is closed by the top surface of the hood 4. Exhaust duct 18 and adapter 1 on the top of 21A
An exhaust port 20A communicating with the outside via 9 is provided. An air supply partition plate 37 is provided between the top surface of the frame body 21A and the upper surface of the exhaust casing 15 provided inside the frame body 21A so as to form a circulation air passage 36. The partition plate 37 has a circulation ventilation port 38 and a circulation air supply ventilation port 39 that communicate with the discharge port 15a of the exhaust fan casing 15.
Is provided. And, in this circulation ventilation port 38,
An exhaust attachment 23 that communicates with the discharge port 15a of the exhaust casing 15 is provided, and between the circulation ventilation port 38 and the circulation air supply ventilation port 39, and the air supply partition plate 37 and the frame 21A.
In between, a partition plate 40 for introducing the exhaust flow from the exhaust fan 13 partly to the outdoors and the rest into the circulation air passage 36.
Is provided. An air supply filter 41 is provided at the air supply ventilation port 6.

In the above structure, a certain amount of the oil smoke sucked and collected by the exhaust fan 13 is discharged to the outside air through the exhaust duct 18, and the rest is the circulating air supply ventilation port 3
After passing through 9 to the circulation air passage 36, passing through the air supply air passage 8 and adsorbing and removing oil dust by the air supply filter 41, the air supply chamber spaces 7a and 7b are filled with the air supply discharge port 7
Therefore, the air is blown along the inner peripheral surface 9.

As described above, according to the range hood of the fifth embodiment of the present invention, a certain amount is discharged to the outside by the exhaust fan 13, and the rest is supplied to the air supply chamber spaces 7a and 7b through the circulation air passage 36. Since the air is introduced and blown from the air supply outlet 7 along the inner peripheral surface 9, the air supply fan 2
4 does not need to be separately provided, and the range hood can be made simple with fewer parts. In addition, since the exhaust flow discharged to the outside will be reduced, it is not necessary to provide another air supply port even in a highly airtight house, construction can be performed easily, and the air conditioning load in summer or winter is reduced. It is possible to provide a range hood having an energy saving effect.

(Embodiment 6) As shown in FIG. 11 to FIG. 14, cook a range hood 1c for collecting oil fumes, steam, etc. generated when cooking with a cooker 1a installed in the kitchen 1. Above the container 1a, the wall cabinet 2
Provide in between. The range hood 1c has an opening 3 at the bottom, a hood including a top hood 42 and an air guide 44, and a frame body 21 provided above the top hood 42.
And a motor 25 for driving the air supply fan 24, which is provided with an air supply fan 24 therein, and an air supply fan casing 26 provided above the top hood 42, and an exhaust fan 13 provided therein. Motor 14 for driving
A casing 15 for an exhaust fan, which is fixed to the casing and covered with a frame 21, and a duct 1 for connecting the exhaust fan 13 to the outside.
8 and a vent 3 for taking in the air on the side of the room 1 at the top
0 is opened, the frame 21 and the air supply fan casing 2
6, and the curtain plate 33 provided between the top hood 42 and the ceiling 31 for concealing the duct 18 and the like from the room 1 side.

The exhaust fan casing 15 is installed so that the rotation axis of the exhaust fan 13 is substantially horizontal, and a suction port 16a is opened on the front side surface of the exhaust fan 13, and the exhaust gas is formed from the front to the lower side of the suction port 16a. The chamber 21a covers the lower side of the exhaust ventilation port 5 through the exhaust ventilation port 5 provided on the lower surface of the frame body 21 and communicates with the filter 17 for collecting oil components such as oil smoke. The discharge port 15a of the exhaust fan casing 15 that communicates with the exhaust ventilation port 5 through the exhaust fan 13 is connected to the duct 18 through the adapter 19, and the duct 18 is the outdoor hood 34 provided on the outer wall 32 side of the building. Connected to.

The air supply fan casing 26 is installed adjacent to the frame body 21 so that the rotation axis of the air supply fan 24 is substantially horizontal, and the suction port 16b opened on the side surface on the side opposite to the frame body 21 is provided. The air supply fan 24 is communicated with the discharge port 22 opened on the lower surface of the air supply fan casing 26. Inside the top hood 42, a supply air flow blower pipe 46 having an air supply ventilation port 45 is provided so as to face the discharge port 22. The air supply blower pipe 46 is connected to the air guide 44.
Is provided inside the top hood 42 above, and has a substantially U-shaped shape in which a rectangular pipe is extended right and left from the front to the rear, and the left and right pipes are connected on the rear side. An air supply discharge port 7C is provided on the lower surface of the rectangular pipes provided on the left and right of the front side of the air supply air flow pipe 46, and reaches the discharge port 22 of the air supply fan casing 26 and the air supply discharge port 7C. An air supply ventilation passage 47 is formed in the air flow ventilation pipe 46.

The air guide 44 is for guiding the flow of the supply air flow discharged from the supply air discharge port 7C, and the inner side surface forming the curved surface shape from the front end portion to the rear has a large depth to the rear and the rear side. Side, that is, the air guide 44
The inner peripheral surface 43 extending toward the cooker 1a side is formed so as to have a depth in the vertical direction toward the wall mounting surface side. The inner peripheral surface 43 is formed such that its central portion is located rearward of its front end portion protruding toward the front side, and has a curved surface between the left and right front end portions, and is formed smoothly as a whole.
If the inner peripheral surface 43 has a curved surface and is formed smoothly,
A curved surface may be formed by a polygonal shape in which planes are continuous, a shape in which arcs having different radii are continuous, or a shape in which an arc and a plane are smoothly continuous may be formed in the inner peripheral surface. The air guide 44 is installed at a distance from the wall surface to which the range hood 1c is attached.

The top hood 42 is provided above the air guide 44, and its lateral width is formed wider than the left and right widths of the air guide 44. As shown in FIG. 14, a portion not occupied by the air guide 44 is formed on the left and right sides of the top hood 42 with the same width. It may be arranged in a biased state.

As shown in FIG. 12, the top hood 42
In the portion surrounded by the upper edge of the air guide 44 having the inner peripheral surface 43, the exhaust ventilation port 5 is provided on the top surface side of the top hood 42, and the filter 17 is provided on the lower surface side. Around the filter 17, in the vicinity of the upper edge of the inner peripheral surface 43, the air supply / discharge ports 7C are opened downward and are provided at two places on the left and right, and the air supply air is directed downward along the inner peripheral surface 43. be able to. Further, an illuminator (not shown) that illuminates the lower cooking device side is provided on the front side of the filter. Further, the air supply / discharge port 7C, the filter 17, and the illuminator are integrally covered with an under cover 52.

At the air supply / discharge port 7, as shown in FIG.
A nozzle 48 is provided so as to be embedded in the top hood 42 to control the direction of the discharged air with respect to the inner peripheral surface 43 of the air supply. This nozzle 48 is provided on the left and right air supply and discharge ports 7C.
Among them, the air supply outlet 7C on the side for discharging the air supply is attached, and the other air supply outlet 7C is attached with a shielding plate (not shown) to close the opening. The shield is
At the beginning of construction of the range hood 1c, the range hood 1c is attached to either the left or right air supply / discharge port 7C together with the nozzle 48. The shield plate closes the supply air discharge port 7C on the side closer to the device with higher heat power in the cooker 1a, for example.

As shown in FIG. 16, the nozzle 48 has a substantially triangular prism shape, and when the nozzle 48 is provided at the air supply / discharge port 7C, it serves as an inlet for taking in air on the air supply passage 47.
8a, a discharge port 48b communicating with the intake port 48a and having a shape corresponding to the supply / discharge port 7C, and formed on three sides of the discharge port 48b so as to project outward, and when attached to the nozzle 48, the supply / discharge port It is composed of attachment pieces 48c and 48d engaged with 7C, and an air supply guide wall 48e provided at an interval equal to the discharge width of the air supply discharge port 7C.

Further, the air guide 44 may be formed of a metal plate material or a thin plate shape of an incombustible material.

As shown in FIG. 17, when the air guide 44 is attached to the top hood 42, several parts of the upper edge of the air guide 44 are screwed and fixed to the top hood 42 with screws 49. In addition, as shown in FIG. 18, a daruma-shaped engagement hole 50 composed of a large diameter hole 50b and a small diameter hole 50a is provided at several locations on the upper edge of the air guide 44,
The top hood 42 is provided with an engagement screw 53 at a position corresponding to the engagement hole 50 when the air guide 44 is attached, and after the large-diameter hole 50b of the engagement hole 50 is hung on the head of the engagement screw 53, By sliding the threaded portion of the engaging screw 53 toward the small diameter hole 50a side and tightening the engaging screw 53, the air guide 4
4 is fixed to the top hood 42.

Further, the motor 1 for driving the exhaust fan 13
4, or the motor 24 that drives the air supply fan 24 is
A C motor or a DC motor whose rotation speed can be controlled is used.

In the above structure, when the range hood 1c is operated, the air above the room 1 is introduced into the inside of the curtain plate 33 through the ventilation port 30 above the curtain plate 33 by the drive of the air supply fan 24. It is discharged from the discharge port 22 of the air supply fan casing 26 through the fan 24, and is filled in the air supply air blowing pipe 46 through the air supply ventilation passage 47. Then, the air filled in the air supply air blowing pipe 46 is blown from the air supply outlet 7C through the nozzle 48, and the air supply air flows downward along the inner peripheral surface 43. And
The relationship between the air supply and the oil smoke generated on the cooker 1a side and the mechanism for exhausting the oil smoke and the like according to the present invention are the same as those described in the first embodiment with reference to FIG. 5, and description thereof is omitted. To do.

Further, since the inner peripheral surface 43 is formed so as to extend toward the cooker 1a side so that the depth increases in the vertical direction toward the wall mounting surface side of the range hood 1c, the inner peripheral surface 43 is formed. Since the portion forming the inner peripheral surface on the cooker 1a side has an arc shape with a small central angle, the supply airflow flowing along the inner peripheral surface 43 is not restricted, and the supply airflow is blown downward to form a large arc. Is drawn to reach the cooking device 1a side, the oil is supplied so as to surround the oil smoke, and the diffusion of the oil smoke is suppressed to exhibit a high collecting property. If the inner peripheral surface is formed to have a large depth on the side opposite to the wall mounting surface, the portion of the inner peripheral surface forming the inner peripheral surface on the cooker 1a side has an arc shape with a large central angle. The airflow is largely restricted by its inner peripheral surface, and the airflow cannot draw a large arc when it is blown downward, so it cannot effectively surround the oil smoke and the oil smoke diffuses. become.

When installing the range hood on the wall, the panel 1d has already been installed under the wall cabinet 2.
Is installed, and the range hood 1 is placed on the panel 1d.
When trying to install c, between the upper wall cabinets 2, the range hood 1 is removed by the thickness of the panel 1d.
Since a gap will be created between c and the wall, the range hood body is installed on the panel 1 in the actual installation of the range hood.
The range hood was attached only after the work of removing the panel 1d was performed only on the portion that abuts d. In the range hood 1c of the present invention, since the air guides 44 provided at a height in contact with the panel 1d are installed at intervals with respect to the wall surface to which the range hood 1c is attached, the work of removing the panel 1d is performed. No need for labor.

When the user cleans the range hood 1c, since the outer peripheral shape of the air guide 44 is formed in a substantially arc shape, the hand is put behind the air guide 44 and the outer peripheral portion is wiped clean. Will be done. At this time, since the horizontal width of the top hood 42 is formed wider than the left and right widths of the air guide 44, an empty space is surely secured beside the air guide 42, and the body is put on the side of the mounting wall of the range hood. Can be cleaned in a state where it can be easily reached. For example, as a construction condition to install a range hood,
When there is a chamber wall on one side of the left and right sides of the range hood, the top hood abuts the chamber wall, so unless a proper space is secured between the chamber hood abutment surface of the top hood and the air guide, It is difficult to clean the back side of the air guide.

In order to make the air supply flow along the circumferential surface 43,
Of the air supply and discharge ports 7C that are provided in two places on the left and right and open downward near the upper edge of the inner peripheral surface 43 around the filter 17,
A nozzle 48 for controlling the air flow direction of the air supply flow is attached to one of the positions, and the air supply filling the air supply air supply pipe 46 is discharged from the discharge port 48b of the nozzle 48. By providing the air supply / discharge port 7C on the lower surface of the top hood 42 by opening it downward and by providing the air supply air blowing pipe 46 in the top hood 42 above the air guide 44 as a rectangular pipe structure, the air guide 44 is provided. Can be made thinner, and the height of the top hood 42 can be lowered, improving the aesthetics and
Handling of the air guide 44 and the top hood 42 at the time of construction becomes easy. Further, the nozzle 4 is attached to the air supply / discharge port 7C.
By installing 8 so as to be embedded in the top hood 42, it is possible to adjust the discharge wind direction of the supply airflow to optimize the oil and smoke according to the layout of the kitchen depending on the construction location of the range hood and the position of the cooker. Optimal nozzles can be selected and installed or replaced so that exhaust conditions can be realized. Further, since the nozzle 48 does not protrude from the top hood 42, the appearance and the cleaning property are improved.

At the air supply / discharge port 7, as shown in FIG.
A nozzle 48 that controls the direction of the discharge airflow of the supply airflow to the inner peripheral surface 43 is provided.

When the air guide 44 is attached to the top hood 42, the engaging hole 50 of the air guide 44 is used.
The large-diameter hole 50b is hooked on the head of the engaging screw 53 of the top hood 42 and temporarily locked, and then the engaging screw 53 is slid to the small-diameter hole 50a side so that the threaded portion fits in the small-diameter hole 50a. When the engagement screw 53 is tightened in this state, the air guide 44 is fixed to the top hood 42.
By this attachment method, the air guide 44 can be easily attached to and detached from the top hood 42.

When the fire source for cooking is an electric cooker, the function and effect of the present invention are also described in the first embodiment.
Since it is similar to that shown in FIG.

As described above, according to the range hood of the sixth embodiment of the present invention, the range hood 1c is installed above the cooking device 1a and exhausts oily smoke and the like generated from the cooking device 1a side.
In the above, the exhaust fan 13 and the air supply fan 24
A top hood 42 provided with a top hood 42 and an air guide 44 provided below the top hood 42 are provided. The air guide 44 is provided with an opening 3 having a large depth from the front end portion to the rear and opening downward, and an opening 3. And an inner peripheral surface 43 having a curved surface on the rear side thereof, the supply airflow is blown along the inner peripheral surface 43, and an upward flow upward is formed by the exhaust fan 13 to diffuse oil smoke and the like. Since the exhaust gas is exhausted without any action, the oil mist is entrained by the supply airflow by the supply airflow flowing downward along the inner peripheral surface 43 and the upward suction force of the exhaust fan 13, and is also moved toward the inner peripheral surface 43 side. An upward flow that is drawn upward while being attracted is formed, and the oil smoke is filtered so that it converges without spreading.
As a result, the range hood having a high collecting property can be provided without increasing the size of the device. Further, since the oil smoke is sucked so as to converge on the exhaust ventilation port 5, the oil smoke does not directly collide with the inner peripheral surface 43, and the range hood in which the inner peripheral surface 43 and the periphery thereof are less likely to be contaminated can be provided.

Further, by collecting the oily smoke and the like generated when cooking with the electric cooker by the range hood 1c of the present invention, the upward airflow due to the heat peculiar to the electric cooker is weak and the oily smoke easily diffuses. It is possible to eliminate the problem and to exhaust the oil smoke without leaking to the surroundings. Further, since the supply airflow flows along the inner peripheral surface 43, it is possible to suppress the dew condensation that tends to adhere to the air guide 44.

Further, since the air guide 44 provided at a height in contact with the panel 1d is installed at a distance from the wall surface to which the range hood 1c is attached, the panel 1
The range hood can be attached and installed without removing d.

Further, since the horizontal width of the top hood 42 is formed wider than the left and right widths of the air guide 44, an empty space is surely secured beside the air guide 42 so that the person can reach the wall side to reach it. It can be cleaned easily. In addition, the lower left and right ends of the top hood 42 are clean, and there is no sense of pressure at the eye level of the cook, which makes the kitchen aesthetically pleasing.

Further, the air supply / discharge port 7C is connected to the filter 17
Since it is provided so as to open downward in the vicinity of the upper edge of the inner peripheral surface 43, the heights of the air guide 44 and the top hood 42 can be reduced, and the air guide 44 and the top hood 42 can be constructed at the time of construction. Is easy to handle, and the entire range hood 1c can be downsized.

Further, since the nozzle 48 for controlling the wind direction of the air supply is attached to the air supply outlet 7C, the air supply can be changed according to the layout of the kitchen, which is peculiar to the installation location of the range hood, and the position of the cooker. It is possible to select and install or replace the optimum nozzle so as to realize the optimum exhaust condition such as oil smoke by adjusting the direction of the discharged air.

Further, since the air guide 44 is formed of a metal plate material or a thin plate shape of an incombustible material, it is light and easy to handle when constructing a range hood, and since it is thin, it comes close to eye level. The air duct 44, which is often the case, does not feel a feeling of pressure or weight, and the appearance is improved.

Further, a daruma-shaped engaging hole 50 consisting of a large-diameter hole 50b and a small-diameter hole 50a is provided at several places on the upper edge of the air guide 44, and the engagement when the air guide 44 is attached to the top hood 42 is made. Since the engaging screw 53 is provided at a position corresponding to the joint hole 50 and the air guide 44 is detachably attached to the top hood 42, when the installer attaches the air duct 44 to the top hood 42, the screw is used after the temporary hooking. Since it is a work process of fixing by, the work can be done easily by one person without burdening the builder. Further, since the air guide 44 can be easily attached and detached, there is an effect that the user can remove the air guide 44 and perform cleaning such as washing with a circle. In particular, when a hydrophilic paint is applied to the air guide 44, it is effective when cleaning is performed so that oil stains on the air guide 44 are immersed in water so that the stains can be easily raised.

A gas stove and an electric cooker may be used as the cooking device 1a, and the wall cabinet 2 may be formed of an inner wall surface or a side blind plate. The electric cooker referred to here means an IH cooking heater, a halogen heater, and a radiant heater.

[0079]

As described above, according to the first aspect of the present invention, it is possible to provide the range hood which does not make the device large in size in order to improve the collecting property.

According to the second aspect of the present invention, it is possible to provide a range hood in which the size of the device is not increased in order to improve the collecting property.

According to the third aspect of the present invention, it is possible to create and exhaust a state of oil smoke in which the suction force of exhaust gas can be fully utilized without diffusing the oil smoke.

Further, according to the invention described in claim 4, the oil smoke near the wall can be collected.

According to the fifth aspect of the present invention, the space above the cooking device necessary for extinguishing a fire in the event of a fire can be secured, and the installation height of the hood can be set low so that it can be close to the source of oil smoke. Collectivity can be improved.

According to the sixth aspect of the present invention, it is possible to blow the supply airflow downward with good balance.

According to the seventh aspect of the present invention, the appearance is improved and the wiping work near the inner peripheral surface can be performed smoothly.

According to the eighth aspect of the present invention, it is possible to perform good exhaust according to the generation state of oily smoke.

Further, according to the ninth aspect of the present invention, it is possible to constantly blow the supply air stream adapted to the state of the oily smoke.

According to the tenth aspect of the present invention, oil smoke can be exhausted without leaking to the periphery of the hood and dew condensation can be suppressed.

According to the eleventh aspect of the present invention, there is a difference in the length of ducts installed between a high-rise house and a detached house, the influence of outside wind, and the change in pressure loss caused by the difference in airtightness of the building. Correspondingly adequate ventilation can be provided.

According to the twelfth aspect of the invention, the cook can perform a comfortable cooking operation without giving the cook a dislike.

According to the thirteenth aspect of the present invention, the supply airflow can be blown according to the generation state of oil smoke so that the suction force of the exhaust fan can be effectively obtained.

According to the fourteenth aspect of the present invention, the negative pressure state in the room can be relieved and the exhaust performance of oil smoke can be sufficiently exhibited.

According to the invention as set forth in claim 15, good trapping property can be obtained even in a highly airtight house, and a kitchen space which does not change the air environment of another room can be obtained. .

According to the sixteenth aspect of the present invention, the range hood can have a simple structure with fewer parts, and the construction can be performed easily.

According to the seventeenth aspect of the invention, the structure of the portion forming the inner peripheral surface of the hood can be simplified, and the range hood can be made more compact.

According to the eighteenth aspect of the present invention, it can be easily formed by selecting the air supply nozzle satisfying the optimum exhaust condition of oily smoke.

According to the nineteenth aspect of the invention, the cleaning ability of the range hood is improved.

According to the twentieth aspect of the present invention, the air guide is light and easy to handle, and the workability of the range hood can be improved.

According to the twenty-first aspect of the invention, the workability or cleaning of the range hood is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an installed state of a range hood according to a first embodiment of the present invention.

FIG. 2 is a side sectional view showing the configuration of the range hood.

FIG. 3 is a partial cross-sectional view showing the configuration of the range hood as seen from the front.

FIG. 4 is a perspective view showing a configuration of the range hood.

FIG. 5 is a plan view showing the flow of oil smoke and the like generated from the cooking device below the range hood.

FIG. 6 is a side sectional view showing a configuration of a range hood according to a second embodiment of the present invention.

FIG. 7 is a bottom view showing the configuration of the range hood according to the third embodiment of the present invention.

FIG. 8 is a flowchart showing a system for blowing the air supply of the range hood.

FIG. 9 is a partial cross-sectional view seen from the front showing a configuration of a range hood according to a fourth embodiment of the present invention.

FIG. 10 is a partial cross-sectional view seen from the front showing the configuration of a range hood according to a fifth embodiment of the present invention.

FIG. 11 is a perspective view showing an installed state of a range hood according to a sixth embodiment of the present invention.

FIG. 12 is a perspective view showing the configuration of the range hood.

FIG. 13 is a side sectional view of the range hood.

FIG. 14 is a partial cross-sectional view showing the configuration of the range hood as seen from the front.

FIG. 15 is an AA showing a flow of a supply air flow of the range hood.
Cross section

FIG. 16 is a perspective view showing a nozzle of the range hood.

FIG. 17 is a partial cross-sectional view showing a mounted state of an air guide of the range hood as seen from the front.

FIG. 18 is a partially enlarged perspective view showing an attached state of an air guide of the range hood.

FIG. 19 is a perspective view showing a conventional range hood.

[Explanation of symbols]

1a cooker 1b range hood 1c range hood 3 openings 4 hood 4a both sides 4b front part 7 Air supply outlet 7A air supply outlet 7B Air supply outlet 7C air supply outlet 9 Inner surface 10 inclined surface 35 duct 42 Top Hood 43 Inner surface 44 Air guide 48 nozzles A, B oily smoke C air supply D suction force

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hitoshi Okamoto             6-2 61, Imafuku Nishi, Joto-ku, Osaka City, Osaka Prefecture               Matsushita Seiko Co., Ltd. F-term (reference) 3L058 BH02 BH04                 3L061 BE02 BF07

Claims (21)

[Claims] 1. A range hood provided above a cooking device for exhausting oil smoke or the like generated from the cooking device side, the opening having a depth on the rear side and opening downward, and this opening. A hood is formed by providing an inner peripheral surface having a curved surface on the rear side, and while supplying a supply airflow so as to flow along the inner peripheral surface, the hood is lifted into the hood without being diffused. A range hood that exhausts air. 2. A range hood provided above a cooking device for exhausting oily smoke or the like generated from the cooking device side, which is a box-shaped hood and has a large size from a front part to both side parts of the hood. An opening that has a depth in the rear and opens downward, and an inner peripheral surface that forms this opening and has a curved surface on the rear side are provided, and while supplying a supply airflow so as to flow along the inner peripheral surface, A range hood that raises and exhausts oil smoke without diffusing it. 3. The range hood according to claim 1, wherein an inner peripheral surface extending toward the cooker is formed such that the depth increases toward the wall mounting surface side of the hood. 4. The range hood according to claim 2, wherein the end portion of the lower end surface of the hood on the side of the wall mounting surface is an inclined surface that forms an obtuse angle with the wall surface. 5. The hood is formed so that the upper sides of both side portions thereof project forward from the lower side.
Or the range hood according to 2. 6. The structure according to claim 1, wherein the air supply / discharge port is provided on the front side of the inner peripheral surface, and the opening end surface of the air supply / discharge port is formed so that its upper side is located rearward of its lower side. Range hood as described in 2. 7. The range hood according to claim 1, 2 or 6, wherein the air supply / discharge port is provided on the front side of the inner peripheral surface, and the air supply / discharge port is formed so as to open rearward. 8. An air supply / discharge port is provided at two or more locations on the inner peripheral surface,
The range hood according to claim 1 or 2, wherein the blowing direction of the air supply flowing along the inner peripheral surface is switchable. 9. The range hood according to claim 1, 2 or 7, wherein a blowing direction of a supply air stream flowing along the inner peripheral surface is selected in conjunction with an operation switch of the cooker. 10. A range hood provided with oil smoke or the like above an electric cooker for discharging oil smoke or the like generated from the electric cooker side, the opening having a depth on the rear side and opening downward. And an inner peripheral surface having a curved surface on the rear side to form this opening to form a hood, which blows a supply air stream so as to flow along the inner peripheral surface and which does not diffuse the oil smoke and the like. A range hood that is raised in the hood and exhausted. 11. The motor according to claim 1, wherein the motor for driving the air supply fan for blowing the air supply or the motor for driving the exhaust fan for sucking the oil smoke is a DC motor. The range hood according to item. 12. The range hood according to claim 1, wherein the lower portion of the inner peripheral surface is located on the front side with respect to the upper portion thereof. 13. A hood provided above the cooker,
This hood is provided with an opening that has a depth on the rear side and opens downward, and an inner peripheral surface that forms this opening and has a curved surface on the rear side, and blows a supply air stream so as to flow along the inner peripheral surface. In addition, in a range hood that raises and exhausts oil smoke generated from the cooker side without diffusing,
Two or more air supply outlets that blow out the air supply are provided, and the air flow direction of the air supply flowing along the inner peripheral surface is switchable, and oil smoke is generated from the position of the fire source of the cooker used by the cook. Ventilation method of range hood that determines the position and selects the most suitable direction of air supply. 14. The range hood according to any one of claims 1 to 12, wherein air introduced from the outside through a duct is blown as a supply air stream. 15. The range hood according to claim 14, wherein the amount of supply air flowing along the inner peripheral surface and the amount of exhaust air exhausting the oil smoke are controlled to be the same. 16. The range hood according to claim 1, wherein a part of an exhaust flow for exhausting oily smoke or the like is introduced as a supply airflow flowing along the inner peripheral surface. 17. A structure in which a supply air outlet for discharging a supply airflow flowing along an inner peripheral surface is provided so as to be opened downward so as to be surrounded by the inner peripheral surface in the vicinity of an upper edge of the inner peripheral surface. The range hood according to claim 1 or 2. 18. The air supply outlet for discharging the air supply flowing along the inner peripheral surface is provided, and the air supply outlet is provided with a nozzle for guiding the wind direction of the air supply. The listed range hood. 19. An air guide, which has an inner peripheral surface that forms a curved surface on the rear side while forming an opening that has a depth on the rear side and opens downward, and a top hood provided above the air guide. A hood is formed from the top hood, and the top hood is formed wider than the lateral width of the air guide.
The listed range hood. 20. The air guide is formed of a plate material.
Or the range hood according to 19. 21. The range hood according to claim 1, wherein the air guide is detachable.