JP2009228937A - Range hood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a range hood capable of coping with a thin-hood by reducing the total height of the hood. <P>SOLUTION: A top face section 4 of a recessed section 5 for capturing, of the hood 1 is composed of a guide section 6 having a suction opening, and a swirl flow generating section 7, oily smoke generated in cooking collides with the top face section 4 as upward flow and flows along the guide section 6, a part of the oily smoke is sucked from a suction opening and exhausted outdoors, and the swirl flow generating section 7 generates the swirl flow of the remaining oily smoke, so that the oily smoke does not leak from a hood front end section even when a vertical dimension of the swirl flow generating section 7 is reduced, and the total height of the hood can be reduced. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a range hood that is installed above a cooking utensil and collects smoke and hot air generated during cooking and exhausts them outside.

Conventionally, various range hoods have been proposed.
For example, a range hood disclosed in Patent Document 1 has been proposed.
This range hood has a hood that collects smoke and hot air generated during cooking, and an exhaust means that discharges the smoke and hot air collected in the hood to the outside. The hood has left and right sides and a guide. The exhaust port is formed on both left and right side surfaces, the guide portion has a guide surface curved in an arc shape, and the upward flow of smoke and hot air is swirled, and the exhaust port is formed on the back surface side of the hood. Is formed as an exhaust means by providing a suction fan in the exhaust space.

Japanese Patent No. 3388160

  According to the above-described conventional range hood, smoke and hot air generated during cooking flow toward the guide portion of the hood as an upward flow and flow along the guide surface to form a swirl flow. Negative pressure action due to this swirl flow This makes it possible to draw back part of the smoke and hot air that leaks from the front edge of the hood to the inside, thereby improving the collection efficiency.

However, since the conventional range hood described above has exhaust ports on both sides of the hood, in order to allow smoke and hot air collected in the hood to flow from the exhaust port to the exhaust space, A flue communicating with the exhaust port and the exhaust space is formed in the part.
For this reason, the hood has a complicated shape with flues on both left and right sides.

Smoke and hot air trapped in the hood are sucked into the exhaust space from the exhaust port by the suction force of the suction fan, but the exhaust port is formed on the left and right side surfaces of the hood. The flow direction of the flowing smoke and hot air is the left-right direction of the hood.
On the other hand, the direction of the swirling flow generated in the hood is the front-rear direction of the hood.
Thus, the flow direction of the smoke or hot air flowing through the exhaust port is almost 90 degrees different from the direction of the swirl flow generated in the hood, and the flow of smoke or hot air flowing through the exhaust port cannot promote the generation of the swirl flow. That is, the suction force of the suction fan cannot be used as the generation of the swirling flow.

In addition, the entire amount of smoke and hot air that has flowed into the hood as an upward flow flows along the guide surface of the guide portion to form a swirling flow, and this and the suction force of the suction fan described above cannot be used as the generation of the swirling flow. For this reason, in order to prevent smoke and hot air from leaking from the edge of the hood to the outside, the vertical dimension of the portion where the swirl flow of the hood must be increased.
For this reason, the height (vertical dimension) of the whole hood is large, and it cannot respond to the hood of a thin design.

  An object of the present invention is to provide a range hood in which the overall height of the hood is reduced so as to be compatible with a thin hood.

1st invention is arrange | positioned above a cooking utensil, The food | hood 1 which collects the oil smoke which generate | occur | produced at the time of cooking,
A range hood provided with exhaust means 2 for exhausting the oil smoke collected by the hood 1 to the outside,
The hood 1 has a collecting recess 5 that opens downward at the left and right side surface portions 3 and 3 and the upper surface portion 4.
The exhaust means 2 has an exhaust space 10 on the back surface side of the upper surface portion 4 and an intake fan 11 that sucks air in the exhaust space 10 and exhausts it outdoors.
The upper surface portion 4 guides the collected oil smoke so as to flow toward the front portion of the hood, and continues to the front end portion of the guide portion 6 to be curved in a downward arc shape to make the oil smoke swirl. A swirl flow generator 7;
The range hood is characterized in that a suction port is formed in the guide portion 6 to suck in a part of the oil smoke collected in communication with the exhaust space 10.

In the second invention, the first suction port 8 is formed in the middle of the guide portion 6 in the front-rear direction in the first invention,
It is a range hood in which the 2nd inlet 9 is formed in the right-and-left direction both sides of the guide part 6, respectively.

According to a third invention, in the second invention, the first suction port 8 has a substantially slit shape having a small opening width in the front-rear direction and being long in the left-right direction.
Each of the second suction ports 9 is a range hood having a small slit width in the left-right direction and a substantially slit shape that is long in the front-rear direction.

According to a fourth aspect of the present invention, in the second or third aspect, a first suction guide is provided along the back side opening edge of the first suction port 8 toward the suction direction of the suction fan 11,
It is a range hood provided with a second suction guide directed in the suction direction of the suction fan 11 along the rear opening edge of each second suction port 8.

  According to a fifth invention, in the second, third, or fourth invention, the swirling flow generating portion 7 and the first suction port 8 are swirled when the flow direction of a part of the air sucked from the first suction port 8 is swirled. It is the range hood provided so that it may go to the substantially tangential direction of the outer periphery of the flow part which goes to the guide part 6 in a flow.

According to the first invention, oil smoke generated during cooking flows along the guide portion 6 to the front portion of the hood, and a part thereof is sucked into the exhaust space from the suction port and exhausted outdoors.
As a result, the amount of oil smoke flowing along the swirl flow generation unit 7 is reduced, and the oil smoke flowing toward the swirl flow generation unit 7 is accelerated by a part of the sucked oil smoke, so that the swirl flow becomes faster. The vertical dimension of the portion forming the swirling flow can be reduced.
Therefore, the overall height of the hood can be reduced to accommodate a thin hood.
Moreover, since oil smoke is sucked in from the suction port of the guide part 6, the hood 1 can be made into a simple shape.

According to the second invention, since the oil smoke is sucked into the exhaust space 10 from the first suction port 8 and the second suction port 9 and discharged to the outside, the amount of the oil smoke flowing along the swirl flow generating unit 7 is collected. The amount of smoke collected in the recess 5 for use is significantly reduced.
Further, the oil smoke is sucked from the first suction port 8 provided in the middle in the front-rear direction of the guide portion 6, so that the oil smoke flowing toward the swirl flow generating unit 7 is further accelerated and the swirl flow becomes faster.
Together, these can make the vertical dimension of the portion of the hood 1 that forms the swirl flow smaller.
Accordingly, the overall height of the hood can be further reduced to accommodate a thin hood.

According to the third invention, part of the oil smoke flowing along the guide portion 6 is sucked from the first suction port 8, and the remaining oil smoke passes smoothly through the first suction port 8 and smoothly enters the front portion of the hood. It flows toward.
Further, the oil smoke can be sucked in from the substantially entire length of the guide portion 6 in the front-rear direction through the second suction port 9.

  According to the fourth aspect of the invention, the smoke can be sucked smoothly from the first suction port 8 and the second suction port 9 by the suction force of the suction fan 11.

  According to the fifth aspect of the invention, the swirling flow itself can be accelerated by the air flow sucked from the first suction port 8, so that the swirling flow becomes even faster.

Embodiments of the present invention will be described with reference to FIGS.
The hood 1 and the exhaust means 2 serve as a range hood.
The hood 1 is disposed above a cooking utensil (not shown) and collects smoke, hot air, oil (hereinafter referred to as oil smoke) generated during cooking.
The hood 1 has a collecting concave portion 5 that is opened downward in the vertically oriented left and right side surface portions 3 and 3 and the horizontally oriented upper surface portion 4.
The upper surface portion 4 is curved in a downward arc shape continuously with the guide portion 6 that guides the oil smoke that has entered the collection recess 5 to flow toward the front portion of the hood, and the front end portion of the guide portion 6. It has a swirl flow generating unit 7 that turns the oil smoke flowing along the unit 6 into a swirl flow.

A suction port is formed in the guide portion 6.
For example, the first suction port 8 is formed in the middle of the guide portion 6 in the front-rear direction, and the second suction ports 9 are formed on both the left and right sides of the guide portion 6.

The exhaust means 2 exhausts the oil smoke collected by the hood 1 (collection recess 5) to the outside.
The exhaust means 2 has an exhaust space 10 formed on the back side of the guide portion 6 of the hood 1 and an intake fan 11 that sucks air in the exhaust space 10 and exhausts it to the outside.
The first and second suction ports 8 and 9 communicate with the exhaust space 10.

Therefore, the oil smoke generated during cooking flows toward the hood 1 as an upward flow as shown by an arrow a in FIG. 5, enters the collecting recess 5 and collides with the guide portion 6, and the oil smoke is -It flows toward the front of the hood along the guide portion 6 as shown by the arrow b in FIG.
Part of the oil smoke flowing along the guide portion 6 is sucked into the exhaust space 10 as shown by an arrow c in FIG.
Then, the remaining oil smoke that has not been sucked from the suction port flows further along the guide portion 6 toward the front portion of the hood and flows along the swirl flow generating portion 7 as indicated by an arrow d in FIG. It becomes a flow.
Due to the negative pressure action caused by the swirling flow, a part of the oil smoke that leaks to the outside from the front end edge of the hood 1 can be pulled back to the inside as in the conventional range hood.

Further, since a part of the oil smoke is sucked from the suction port, the flow of the oil smoke flowing toward the front of the hood along the guide part 6 is further accelerated without being sucked. It flows at a high speed and becomes a fast swirl flow.
Thus, the above-described negative pressure action increases due to the faster swirling flow, and the ability to draw back part of the oil smoke that leaks from the front end edge of the hood 1 to the inside increases.
And a part of the oil smoke which became the swirl | vortex is suck | inhaled from the above-mentioned suction inlet.

In addition, since a part of the oil smoke that has entered the collection recess 5 of the hood 1 is sucked from the suction port, the amount of oil smoke that becomes a swirl flow is small.
In combination with this, the swirl flow becomes faster, and the vertical dimension of the swirl flow generating portion of the hood 1 can be reduced, so that the overall height (vertical dimension) of the hood 1 can be reduced. Compatible with design hoods.

  Moreover, since the suction inlet was formed only in the guide part 6, the hood 1 can be made into a simple shape.

In the above-described embodiment, the first suction port 8 is formed in the front and rear middle of the guide portion 6 and the second suction ports 9 are formed on both the left and right sides of the guide portion 6, respectively.
As described above, oil smoke generated during cooking flows toward the hood 1 as an upward flow as indicated by an arrow a, and collides with the guide portion 6 of the collecting recess 5.

The oil smoke that has collided with the guide portion 6 tends to diffuse in the front-rear and left-right directions. However, the diffusion in the front-rear direction is suppressed by the swirling flow generated as described later, so that the diffusion in the left-right direction becomes stronger.
As a result, the oil smoke colliding with the guide portion 6 flows in the left-right direction and is sucked into the exhaust space 10 from the second suction port 9 as shown by the arrow e in FIG. Exhausted.
At the same time, part of the oil smoke flows along the guide portion 6 toward the front portion of the hood, and part of the oil smoke is sucked into the exhaust space 10 from the first suction port 8 as indicated by an arrow c.

  The remaining oil smoke that has not been sucked in from the first suction port 8 and the second suction port 9 flows along the guide portion 6 further toward the front portion of the hood, and flows along the swirl flow generating portion 7. It becomes a swirl flow like d.

  Thus, the amount of oil smoke that forms a swirl flow is collected because a part of the oil smoke collected in the collection recess 5 is sucked into the exhaust space 10 from the first and second suction ports 8 and 9. Compared with the amount of oil smoke collected in the concave portion 5 for use, the amount becomes extremely small.

  Further, a part of the oil smoke flowing along the guide portion 6 is sucked into the exhaust space 10 from the first suction port 8, so that it is not sucked from the first suction port 8 and further along the guide portion 6 to the hood front portion. Since the flow of the oil smoke flowing toward it becomes faster and faster, it flows at a high speed along the swirl flow generation unit 7 and becomes a fast swirl flow.

Moreover, air is sucked from the first suction port 8 as indicated by the dotted arrow.
Then, as shown by the arrow f, a part of the sucked air is directed almost in the tangential direction of the outer periphery of the flow portion toward the guide portion 6 in the swirling flow indicated by the arrow d, and thus the swirling flow itself is accelerated by the air flow. The swirl flow becomes even faster.
In short, the suction force of the suction fan 11 can be used as the generation of the swirling flow.

  As described above, since the swirl flow becomes faster, the above-described negative pressure action is increased, and the ability to pull back a part of the oil portion that is about to leak outside from the front end edge of the hood 1 is increased.

  In this way, the swirl flow becomes faster and the amount of the oil smoke that becomes the swirl flow is small, so that the vertical dimension of the portion (the swirl flow generation unit 7) that forms the swirl flow of the hood 1 is increased. Since it can be made smaller, the overall height (vertical dimension) of the hood 1 can be reduced, so that it can be used for a thin hood.

  Further, as the swirl flow becomes faster as described above, a part of the swirling oil smoke can be sucked from the first suction port 8.

  Further, since the oil smoke is sucked from the first and second suction ports 8 and 9 formed in the guide portion 6 that forms the collecting recess 5 of the hood 1 and discharged to the outside, the hood 1 can be made into a simple shape. it can.

Next, each member will be described in detail.
The hood 1 has a box-shaped hood main body 24 opened downward by an upper surface plate 20, left and right side plates 21, 21, a front surface plate 22, and a rear surface plate 23, and a partition plate near the rear surface plate of the hood main body 24. 25, and the hood main body 24 has a downward recessed portion 24a and a hollow portion 24b.

A guide plate 26 is detachably attached to the top plate 20 near the front plate 22 and across the partition plate 25.
The guide plate 26 is curved in the shape of a bow to serve as the guide portion 6 described above.
An arc-shaped plate 27 is provided continuously with the front end portion of the guide plate 26 to form the swirl flow generating portion 7 described above.
The guide plate 26, the arc-shaped plate 27, and the left and right side plates 21 form the collection recess 5 described above.
That is, a part of the left and right side plates 21 is the left and right side portions 3 described above.
A suction space 28 is formed by a part of the back surface of the guide plate 26, the upper surface plate 20, the partition plate 25, and the left and right side plates 21.

A suction box 30 whose lower surface is opened is attached to the upper surface plate 20, and the suction fan 11 is provided in the suction box 30.
The suction port 11a of the suction fan 11 opens into the suction space 31 in the suction box 30, and the discharge port 11b communicates with a connection flange 32 for connecting the duct.
The suction space 31 communicates with the suction space 28 at the suction opening 29 formed in the upper surface plate 20 to form the exhaust space 10 described above.

As shown in FIGS. 3 and 4, the first suction port 8 has a slit shape that has a small opening width in the front-rear direction and is long in the left-right direction.
As shown in FIGS. 3 and 4, each of the second suction ports 9 has a slit shape with a small opening width in the left-right direction and long in the front-rear direction.
Thus, the oil smoke flowing toward the front portion of the hood along the guide portion 6 is sucked from the first suction port 8 having a small opening width in the front-rear direction and passes through the first suction port 8 before the hood. It flows smoothly toward the part.
Moreover, since the 2nd suction inlet 9 is long in the front-back direction, it can suck | inhale oil smoke from the front-back direction substantially full length of the guide part 6, and since the width | variety of a left-right direction is small, it does not inhibit the flow of the oil smoke toward a hood front part.

Since the first suction port 8 is located closer to the front of the hood than the suction opening 29, the first suction guide 8 a is moved along the opening edge on the back side of the first suction port 8. It is provided obliquely toward 29, so that air can be smoothly sucked from the first suction port 8 by the suction force of the suction fan 11.
That is, the first suction guide 8 a faces the suction direction of the suction fan 11. The first suction guide 8a faces substantially the same direction as the air flow direction indicated by the arrow f described above.

For example, the guide plate 26 serving as the guide portion 6 is ejected into a slit shape, and the projecting piece 26a is inclined to be the first suction guide 8a.
Not limited to this, the guide piece may be fixed along the opening edge on the back side of the first suction port 8.

  Since the second suction port 9 is located closer to the left and right sides than the suction opening 29, the second suction guide 9 a is moved along the opening edge on the back side of the second suction port 9. It is provided obliquely toward 29, so that air can be smoothly sucked from the second suction port 9 by the suction force of the suction fan 11.

For example, as described above, the guide plate 26 is driven into a slit shape, and the protruding piece 26b is inclined to form the second suction guide 9a.
Not limited to this, the guide piece may be fixed along the opening edge on the back side of the second suction port 9.

The guide plate 26 and the arcuate plate 27 are detachably attached.
For example, the mounting piece 27a provided at the rear end edge of the arc-shaped plate 27 is fixedly attached to the bracket 20a fixed to the upper surface plate 20 with a screw, and the locking piece 27b provided at the front end edge is locked to the front plate 22. It latches and supports the receiving piece 22a.
The guide plate 26 is provided with a flange on the periphery, and the flange 26c at the rear end is fitted and supported in the recess 25a of the partition plate 25, and the flange 26d at the front end is attached to and detached from the attachment piece 27a of the arcuate plate 27. Support freely.
For example, a pin is provided in the flange 26d, a hole is formed in the mounting piece 27a, and the pin is fitted into the hole and supported.

  The guide plate 26 and the arcuate plate 27 may be integrated.

It is a front view of the range hood which shows embodiment of this invention. It is AA sectional drawing of FIG. It is a bottom view of FIG. It is a perspective view of a guide plate. It is a flow explanatory view of oil smoke.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Hood | hood, 2 ... Exhaust means, 3 ... Side surface part, 4 ... Upper surface part, 5 ... Concave part for collection, 6 ... Guide part, 7 ... Swirling flow generation part, 8 ... 1st suction inlet, 8a ... 1st suction | inhalation Guide, 9 ... second suction port, 9 ... second suction guide, 10 ... exhaust space, 11 ... suction fan.

Claims (5)

A hood 1 that is disposed above the cooking utensil and collects oily smoke generated during cooking;
A range hood provided with exhaust means 2 for exhausting the oil smoke collected by the hood 1 to the outside,
The hood 1 has a collecting recess 5 that opens downward at the left and right side surface portions 3 and 3 and the upper surface portion 4.
The exhaust means 2 has an exhaust space 10 on the back surface side of the upper surface portion 4 and an intake fan 11 that sucks air in the exhaust space 10 and exhausts it outdoors.
The upper surface portion 4 guides the collected oil smoke so as to flow toward the front portion of the hood, and continues to the front end portion of the guide portion 6 to be curved in a downward arc shape to make the oil smoke swirl. A swirl flow generator 7;
A range hood in which a suction port is formed in the guide portion 6 to suck in a part of the oil smoke collected in communication with the exhaust space 10. A first suction port 8 is formed in the middle of the guide portion 6 in the front-rear direction,
The range hood according to claim 1, wherein second suction ports are formed on both sides of the guide portion in the left-right direction. The first suction port 8 has a small opening width in the front-rear direction and a substantially slit shape that is long in the left-right direction.
The range hood according to claim 2, wherein each of the second suction ports (9) has a substantially slit shape having a small opening width in the left-right direction and being long in the front-rear direction. A first suction guide is provided along the back side opening edge of the first suction port 8 toward the suction direction of the suction fan 11,
The range hood according to claim 2 or 3, wherein a second suction guide is provided along the rear opening edge of each second suction port 8 toward the suction direction of the suction fan 11.   The swirling flow generating unit 7 and the first suction port 8 are configured such that the flow direction of a part of the air sucked from the first suction port 8 is substantially tangential to the outer periphery of the flow part facing the guide unit 6 in the swirling flow. The range hood according to claim 2, 3, or 4 provided in the above.

Images