JP2016183803A - Ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a particle recovery effect and to improve maintainability regarding a ventilation device.SOLUTION: Particle swirling separation means 3 includes an inflow port 7 provided on a bottom surface side and an outflow port 9 provided on a top surface, and it is a cylindrical body for passing air to be processed and for exhausting particles from an exhaust port 10 provided at a side surface to a particle recovery chamber 6. Around the particle recovery chamber 6, three or more particle swirling separation means 3 are arranged on the outer peripheral part, and the air flowing out of a vent hole 13 provided on the top surface of the particle recovery chamber 6 and the air flowing out of the outflow port 9 merge at a connection part 4. An inclination descending toward the vent hole 13 is provided on a recovery chamber top surface 12 of the particle recovery chamber 6.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a ventilator provided with particle swirl separation means for separating and taking in particles from air containing particles such as powder, oil, and water vapor.

  Conventionally, this type of ventilation device is a cyclone type that purifies air containing particles such as powder, oil, and water vapor by sucking air containing particles and generating a swirling flow inside to centrifuge the particles. One is known (Patent Document 1).

  Hereinafter, an example of a conventional cyclonic ventilator will be described with reference to FIGS. 10 and 11.

  A ventilation device 101 shown in FIG. 10 is a range hood that forms a collection space that opens downward by a guide plate 102 and a pair of left and right side plates 103. Smoke, oil, and water vapor contained in the rising air are converged by the guide plate 102 and the side plate 103 and sucked into the inside of the range hood from the intake ports provided in the left and right side plates 103. The sucked air passes through the first duct 104 formed inside the range hood shown in FIG. 11, air and large particles are separated by the cyclone unit 105, and exhausted through the second duct 106. It is.

  Further, as this type of cyclone type dust collecting particle recovery device, a main body case having an air flow suction portion and an air flow outlet portion, and provided in the main body case, the air flow sucked into the main body case from the air flow suction portion, A dust particle swirl that separates the dust particles contained in the sucked airflow by rotating the airflow sucked into the main body case through the airflow suction portion by the fan that is discharged from the airflow blowing portion to the outside of the main body case. The thing provided with the isolation | separation means is known (patent document 2).

  This is because the cyclone type dust collecting particle recovery apparatus shown in FIG. 12 includes a cylindrical casing 201, an airflow inlet 202 extending tangentially to the upstream side surface, and an airflow outlet 203 for discharging the casing 201 in the axial direction. The particle outlet 204 for discharging particles separated from the air from the casing 201 is provided on the outer peripheral surface of the casing 201 on the airflow outlet 203 side. In a form connected to the particle outlet 204, there is a particle reservoir 205 for storing particles, and the separated particles are stored here.

JP 2005-127560 A JP 2000-157463 A

  In the conventional example shown in Patent Document 1, two cyclone portions 105 that separate particles from air are provided on the left and right sides of the side plate 103. The air containing smoke, oil, and water vapor generated from the cooking utensil 107 is sucked into the ventilator 101, but the air flow converges toward the left and right side plates 103. In some cases, smoke, oil and water vapor contained in the air rising from the cooking utensils could not be collected sufficiently. Moreover, it was necessary to clean the two cyclone portions where the particles accumulated, and there was a problem in maintainability.

  In the conventional example shown in Patent Document 2, when a fan (not shown) is driven, first, an air flow is sucked into the main body case from the air flow inlet 202, and then this air flow is swirled by the particle swirl separating means, As a result, the particles contained in the suction airflow are separated and discharged from the particle outlet 204 of the swirl cylinder constituting the particle swirl separating means to the particle reservoir 205.

  The air flow swirled by the particle swirl separating means is directed to the air flow outlet 203, but a part of the air flow flows from the particle outlet 204 to the particle reservoir 205 due to the swirling momentum. The airflow that has flowed into the particle reservoir 205 returns from the particle outlet 204 to the particle swirl separator again. Due to the airflow flowing into the particle reservoir 205, particles accumulated in the particle reservoir 205 rise, and a part of the particles returns to the particle swirl separator and returns to the airflow outlet 203 to cause a re-scattering phenomenon. That is, the particle recovery effect of the particle swirl separating means is low.

  Further, when the cylindrical duct 206 is connected downstream from the air flow outlet 203, the particles attached to the inner cylinder portion of the duct 206 cannot be collected in the particle reservoir 205, and the particles in the duct 206 are not collected. Has accumulated the problem of causing mold and odors to accumulate.

  Therefore, the present invention improves the collection efficiency of particles generated from cooking utensils, consolidates the particles separated in the cyclone unit into one particle reservoir, improves the maintainability, and collects particles adhering to the duct. Thus, an object of the present invention is to provide a ventilator with improved particle recovery efficiency.

In order to achieve this object, the present invention
A particle swirl separating unit that is installed in an air blowing path containing particles and swirls air to separate the particles, a particle recovery chamber for collecting and storing particles separated by the particle swirl separating unit, and the particle swirl separation In a ventilator provided with a connection part forming an air passage on the downstream side of the means and a duct extending upward from this connection part,
The particle swirl separating means includes an inflow port provided on the bottom surface side and an outflow port provided on the top surface, allows the air to be treated to pass through, and discharges particles from the discharge port provided on the side surface to the particle recovery chamber. 1 cylinder,
The particle recovery chamber is provided with a hole in the top surface, the discharge port of the particle swirl separation means is disposed on the outer periphery, and the swirl flow direction of the particle swirl separation means is all in the same direction. The second cylindrical body having at least three, and the connection portion is disposed so as to cover the top surfaces of the particle separation means and the particle recovery chamber, and the air flowing out from the outlet and the vent hole The air that flows out merges, and is inclined so as to become lower from the top surface of the particle swirl separating means toward the hole in the top surface of the recovery chamber, thereby achieving the intended purpose. To do.

  According to the present invention, air containing particles generated from cooking utensils can be collected uniformly and efficiently, enhancing the particle recovery effect, and even particles adhering to the duct can be recovered in one particle recovery chamber. .

  That is, in the present invention, the air containing particles generated from the cooking utensils rises evenly from the cooking utensils and is sucked into the inflow port provided in the ventilator without causing the wind speed distribution. Can be collected without missing.

  Further, there is no flow returning from the particle recovery chamber to the particle swirling / separating means at the discharge port, and further, the air current and the particles can be separated by the swirling flow in the particle collecting chamber, so that the particles are prevented from being scattered again from the hole. And the particle recovery effect can be enhanced.

  In addition, when particles adhering to the connecting part and the inner pipe of the duct have fallen due to the action of gravity, the particles can move toward the hole along the inclination of the top surface and be collected in a single particle recovery chamber. it can.

The front view of the ventilation apparatus of Embodiment 1 of this invention A-A 'sectional view 1 is a perspective view of a particle swirl separator and a particle recovery chamber according to Embodiment 1 of the present invention. Side view B-B 'sectional view C-C 'sectional view The perspective view of the particle | grain swirl separation means of Embodiment 1 of this invention Front view of a ventilator according to Embodiment 2 of the present invention D-D 'sectional view Schematic perspective view showing a conventional cyclone type ventilator Schematic perspective view showing a conventional cyclone type ventilator Schematic sectional view showing a conventional cyclone-type dust collection device

  The particle recovery apparatus according to claim 1 of the present invention is installed in an air blowing passage for air containing particles, and a particle swirl separating unit that swirls air to separate particles, and particles separated by the particle swirl separating unit. In a ventilating apparatus comprising a particle collection chamber for collecting and storing, a connection part forming an air passage on the downstream side of the particle swirl separation means, and a duct extending upward from the connection part, the particle swirl separation means comprises: A first cylinder that includes an inlet provided on the bottom surface side and an outlet provided on the top surface, allows air to be treated to pass through, and discharges particles from the outlet provided on the side surface to the particle recovery chamber. The particle recovery chamber is provided with a hole in the top surface, the discharge port of the particle swirl separation means is disposed on the outer periphery, and the swirl flow direction of the particle swirl separation means is all in the same direction. A second cylinder having at least three pieces, The connecting portion is disposed so as to cover the particle separation means and the top surface of the particle recovery chamber, and the air flowing out from the outlet and the air flowing out from the vent hole merge, and the particle swirl separating means Is inclined so as to become lower from the top surface toward the hole in the top surface of the recovery chamber.

  Thereby, the air containing the particles generated from the cooking utensils rises evenly from the cooking utensils and is sucked into the inlet of the particle swirl separating means provided around the particle recovery chamber without generating the wind speed distribution. That is, since there is no turbulence of the airflow due to the difference in wind speed, it is possible to collect the smoke, oil and water vapor contained in the air rising from the cooking utensil without missing it.

  The air containing the sucked particles is separated into air and large particles by the particle swirl separating means. Part of the swirling flow passes through the discharge port and flows into the particle recovery chamber, and the particles separated by the particle swirling separation means also flow into the particle recovery chamber. The particles flow in along the outer peripheral side of the particle recovery chamber, that is, the inner side due to the influence of the swirling flow. Since the swirl flow direction of each particle swirl separation means is the same, swirling flow is generated over the entire inner circumference in the particle collection chamber by blowing out from each discharge port to the particle collection chamber. Due to this swirling flow, centrifugal force is applied to the particles even in the particle recovery chamber, and the particles are attracted to the inner wall of the particle recovery chamber, and the airflow flows downstream from a hole provided in the top surface of the particle recovery chamber.

  In other words, by discharging the airflow from the hole by the hole that merges with the air flowing out from the outlet, there is no flow returning from the particle recovery chamber to the particle swirl separator at the exhaust port. Once the particles collected in the particle collection chamber are not returned to the particle swirling / separating means, the airflow and the particles can be separated by the swirling flow in the particle collecting chamber. Can be prevented. By these actions, the effect of enhancing the particle recovery effect can be obtained.

  Further, in the conventional example, particles attached to the connecting portion provided on the downstream side of the air flow outlet and the inner cylinder portion of the duct could not be recovered, but in the present invention, the top surface of the recovery chamber faces the hole. Therefore, when particles adhering to the inner cylinder of the duct fall due to the action of gravity, the particles move toward the hole along the inclination of the top surface of the recovery chamber and reach the particle recovery chamber . That is, it is possible to obtain an effect that even particles adhering to the inner cylinder of the duct can be collected.

  According to a second aspect of the present invention, the outlet of the particle swirl separator is provided with an extending portion extending in the duct direction from the outlet.

  As a result, the particles adhering to the inner cylinder of the duct do not fall directly under the action of gravity, but when they fall through the duct wall, the particles are blocked by the extending portion and enter the outlet of the particle swirl separating means. Nothing will happen. As a result, since the particles have only a path that moves toward the punched hole along the inclination of the top surface of the recovery chamber, they surely reach the particle recovery chamber. That is, the effect of further improving the recovery rate of particles adhering to the inner cylinder of the duct can be obtained.

  Further, in the ventilator according to the third aspect, the connection portion top surface of the connection portion is inclined toward the duct.

  When air containing fine particles that could not be separated by the particle swirl separating means and the particle recovery chamber passes through the connecting portion and the duct, the particles collide and adhere to the inner wall of the connecting portion and the inner wall of the duct. In particular, particles tend to adhere to the connection portion top surface of the connection portion due to inertial collision, and when the particles become larger with time, they may fall due to gravity. By providing an inclination on the top surface of the connection portion, the particles move along the inclination, so that the particles do not stay at the same position on the top surface for a long time, and generation of mold and odor can be suppressed.

  According to a fourth aspect of the present invention, there is provided a particle recovery apparatus comprising a particle collision portion on the inner surface of the connection portion. Thereby, the particle | grains which collided with the particle | grain collision part can be collect | recovered, and collection | recovery efficiency can be improved further.

  In the ventilator according to claim 5, the minimum diameter of the duct is smaller than the diameter of the top surface of the particle recovery chamber. As a result, even when the particles fall directly from the end of the duct, the particles land on the top surface of the collection chamber, so that the effect of improving the particle collection rate can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a front view of an installation example of a ventilation device according to Embodiment 1 of the present invention. The ventilator 1 is used for purifying air containing particles such as smoke, oil, and water vapor generated from a cooking utensil 2 placed on a gas stove, for example. The clean air that has been sucked into the particle swirl separating means 3 and from which the particles have been separated and removed is discharged to the outside through a duct 5 extending upward from the connection portion 4.

  FIG. 2 is a sectional view showing an A-A ′ section of the ventilation device according to the first embodiment of the present invention. FIG. 3 is a perspective view of a part constituting the particle swirl separating means and the particle recovery chamber.

  The ventilation device 1 includes a particle swirl separating unit 3 that swirls an air stream containing particles and separates the particles, and a particle recovery chamber 6 that collects and stores the particles separated by the particle swirl separating unit 3.

  The particle swirl separating means 3 has an inlet 7 provided on the lower surface side and an outlet 9 provided on the top surface 8, and allows the air to be treated to pass through the particles from the outlet 10 provided on the side surface. It is the 1st cylinder discharged | emitted in the collection chamber 6.

  Moreover, the extending | stretching part 11 is provided toward the upper direction and the downward direction from the outflow port 9. As shown in FIG. That is, the extending portion 11 is a wall that extends upward from the outlet 9 on the top surface 8 of the particle swirling / separating means 3, and also extends from the outlet 9 to the inside of the particle swirling / separating means 3. Or it is an annular rib.

  The particle recovery chamber 6 has a hole 13 in the top surface 12 of the recovery chamber, the discharge port 10 of the particle swirl separation means 3 is disposed on the outer periphery, and the swirl flow directions of the particle swirl separation means 3 are all the same direction. It is the 2nd cylinder provided with at least 3 pieces. A rib 14 is provided downward from the hole 13. A particle recovery box 15 is provided on the bottom surface of the particle recovery chamber 6. The particle recovery box 15 is detachable, and can be removed when the particles have accumulated and discarded.

  In the present embodiment, the top surface 8 of the particle swirl separating means 3 and the recovery chamber top surface 12 are continuously arranged, and the top surface 8 of the particle swirling separation means 3 is passed through the hole 13 of the recovery chamber top surface 12. An inclination is provided so as to become lower.

  In the present embodiment, the particle swirl / separation means 3 is configured in a circular shape so that eight particles are arranged adjacent to each other, and the inside of these is the particle recovery chamber 6. The number of the particle swirling / separating means may be three or more, and it is preferable to arrange the particle swirling means at symmetrical positions with the particle recovery chamber 6 as the center, because the air flow rising from the cooking utensil 2 can be made uniform and the particle recovery rate can be increased. The particle recovery chamber 6 is not limited to a cylindrical shape, and may be an elliptical cylindrical shape, a rectangular parallelepiped shape, an octagonal prism shape, or the like.

  In the present embodiment, the outlet 9 and the blowout hole 13 are blown in the same direction, blown into the same space, merged, and flow to the downstream connecting portion 4.

  FIG. 4 is a side view showing the plurality of particle swirl separating means 3 and the particle recovery chamber 6. FIG. 5 is a block diagram showing a B-B ′ cross section of the particle swirl separating means 3 and the particle recovery chamber 6, and FIG. 6 is a block diagram showing a C-C ′ cross section of the particle swirl separating means 3 and the particle recovery chamber 6. FIG. 7 is a perspective view of the particle swirl separating means 3, and a broken line indicates a contact surface between the swirl promoting surface 18 and the cylindrical body 16.

  As shown in FIG. 7, the particle swirling / separating means 3 includes an inlet 7 provided on the lower surface side of the cylinder 16 and an outlet 10 for discharging particles to the particle recovery chamber 6 on the side surface of the cylinder 16. The inflow port 7 is surrounded by four sides with the side surface of the cylindrical body 16 and the central axis 17 at the center of the cylindrical body 16 as opposite sides, and the start end 19 of the spiral turning promotion surface and the terminal end 20 of the turning promotion surface as opposite sides. It is the part that was. The swirl promoting surface 18 is a spiral of 360 ° from the start end 19 of the swirl promoting surface to the end 20 of the swirl promoting surface, so that a swirl flow can be generated in the cylindrical body 16. The discharge port 10 is disposed at the uppermost part of the cylindrical body 16 and may be located anywhere in the circumferential direction.

  In the present embodiment, the start end 19 of the turning promotion surface and the end end 20 of the turning promotion surface overlap each other when viewed from the lower surface side axial direction of the cylindrical body 16, but the turning is performed in a state where the spiral is less than 360 °. Even if there is a slight gap between the start end 19 of the promotion surface and the end 20 of the rotation promotion surface, the generation of the rotation flow is not affected. This gap makes it easy to remove the mold when the particle swirl separating means 3 is resin-molded.

  As shown in FIG. 6, since the direction of the swirling flow of the particle swirling / separating means 3 is all the same direction, the air flowing out from the discharge port 10 is swirled inside the particle recovery chamber 6 as indicated by the arrow. Become.

  The effect of this Embodiment is demonstrated.

  In the above configuration, when air containing particles flows in from the inlet 7 provided in the particle swirl separator 3, the air generates a swirl along the spiral structure inside the particle swirl separator 3, and particles are generated by centrifugal force. Are separated. The separated particles move toward the outer periphery of the particle swirl separating means 3 and are discharged from the discharge port 10 to the particle recovery chamber 6. The clean air from which the particles have been separated and removed flows out from the outlet 9 of the particle swirl separating means 3. At this time, a part of the swirl flows through the discharge port 10 and flows into the particle recovery chamber 6.

  The particles separated by the swirling flow flow into the particle collecting chamber 6 from the discharge port 10 with directivity due to the swirling flow. The directivity is not directed to the center of the particle recovery chamber 6 from the discharge port 10 when the center of the particle recovery chamber 6 is viewed from the discharge port 10 of each particle swirl separation means 3, but in the direction of the swirling flow. Then, it blows out to the particle recovery chamber 6. Since the swirl flow direction of each particle swirl separation means 3 is the same, swirl flow is generated in the particle collection chamber 6 by blowing out from each discharge port 10 to the particle collection chamber 6 in the same direction. Due to this swirling flow, centrifugal force is also applied to the particles in the particle recovery chamber 6, and the particles are attracted toward the outer periphery of the particle recovery chamber 6, and the airflow flows from the hole 13 provided in the top surface 12 of the recovery chamber to the connecting portion 4. The air flowing out from the outlet 9 and the air flowing out from the vent hole 13 merge and flow from the connecting portion 4 to the duct 5.

  In the ventilation device 1 according to the present embodiment, when very fine smoke, mist-like water, or air containing oil mist is sucked, the particle swirl separating means 3 and the particle recovery chamber 6 may not be able to separate them. The components that could not be collected may become droplet-like dirt and adhere to the connection part 4 and the duct 5. If these stains are left for a long period of time, they may cause mold and odor.

  When such droplet dirt adheres to the connecting portion 4 and the duct 5, the droplet descends along the inner wall of the duct 5 extending upward from the connecting portion 4, and a part of the droplet remains on the inner wall as it is. Fall away. Another portion further descends along the inner wall of the connecting portion 4 and reaches the top surface 8 of the particle swirl separating means 3. Since the top surface 8 is provided with the extending portion 11, the droplet cannot enter the outflow port 9, moves toward the hole 13 along the inclination of the recovery chamber top surface 12, and the particle recovery box 15. To reach. By these actions, the droplets attached to the duct 5 and the connection portion 4 can be collected in the particle recovery box 15. When performing maintenance, it is only necessary to remove the particle recovery box 15 and discard the droplets, and there is no need to perform maintenance of a plurality of cyclones unlike a conventional cyclonic ventilator. Thereby, the maintenance work time and frequency can be improved.

  In the present embodiment, the extending portion 11 extends from the outlet 9 provided in the particle swirl separator 3 to the inside of the particle swirl separator 3. This makes it difficult for the particles that have flowed into the particle swirling / separating means 3 to scatter from the outlet 9 to the downstream, thereby enhancing the effect of separating and collecting the particles.

  Moreover, in this Embodiment, it is comprised so that the direction of the swirl | vortex flow of the particle | grain swirl separation means 3 may all become the same direction. In the ventilator 1, the inflowing air forms a swirling flow as indicated by an arrow shown in FIG. 5, and a part thereof flows into the particle recovery chamber 6 with directivity. As shown in FIG. 6, a counterclockwise swirling flow is generated. Due to this swirling flow, the particles in the particle recovery chamber 6 are subjected to centrifugal force and gather in the outer circumferential direction of the particle recovery chamber 6, so that re-scattering of particles due to turbulence of the air flow in the particle recovery chamber 6 can be suppressed. The effect of separating and collecting can be enhanced.

  In the present embodiment, a hole 13 is provided in the recovery chamber top surface 12 of the particle recovery chamber 6 so that the airflow flowing in from the discharge port 10 is released to the connection portion 4 side, and the airflow discharged from the outlet 9 is The structure is a merging structure. At this time, the airflow exiting from each outlet 9 occupies most of the airflow flowing in from the inlet 7, and the airflow flowing downstream from the hole 13 of the particle recovery chamber 6 is only a part. Nevertheless, it is necessary to reduce the amount of particles contained in the airflow that exits through the hole 13 as much as possible.

  In the ventilator 1, the inflowing air forms a swirling flow as indicated by an arrow shown in FIG. 5, and a part thereof flows into the particle recovery chamber 6 with directivity. When there is no hole 13 in the particle recovery chamber 6, there is no place for the airflow that has flowed in. Therefore, a flow that returns from the discharge port 10 to the particle swirling / separating means 3 again occurs, and one of the particles accumulated in the particle recovery chamber 6. There is a possibility that a re-scattering phenomenon occurs in which the part returns to the particle swirl separating means 3 along this flow. However, by providing the hole 13 as in the present embodiment, the airflow that has flowed into the particle recovery chamber 6 can escape from the hole 13 and re-scattering of the particles can be suppressed.

  Moreover, in this Embodiment, the rib 14 is provided toward the downward direction from the punch hole 13. Thereby, the particles deposited in the particle recovery chamber 6 are less likely to be scattered from the hole 13 to the connection portion 4 side, and the effect of separating and collecting the particles can be enhanced. Further, even if the air goes directly from the discharge port 10 to the hole 13, the particle collides with the rib 14 and falls, so that the particle recovery effect can be enhanced.

  In the present embodiment, examples of installation of purification of smoke, water vapor, and oil generated from cooking utensils are given, but the present invention is not limited to this, and any application that separates, collects and purifies dust in the air. Can be applied to.

  In the present embodiment, the inclination provided on the recovery chamber top surface 12 so as to become lower toward the hole 13 is linear, but the present invention is not limited to this, and the same effect can be obtained. I just need it. For example, a curved shape or a stepped shape may be used.

  In the present embodiment, the shape of the punch hole 13 is circular. However, the shape is not limited to this, and may be, for example, an elliptical shape. Further, a plurality of small openings may be arranged or meshed, and dust particles larger than the openings can be prevented from scattering.

  In the present embodiment, the shape of the rib 14 is cylindrical. However, the present invention is not limited to this, and for example, the opening on the lower side of the rib 14 may be larger than the hole 13. As a result, when the particles go down along the ribs 14, the particles go to the outer peripheral side of the particle collection chamber 6, and the dust separation effect is enhanced. Conversely, the opening on the lower side of the rib 14 may be made smaller than the hole 13. In this case, the particles are less likely to be scattered downstream from the punched holes 13, so that the particle separation effect is enhanced.

  Moreover, as shown in FIG. 2, the particle | grain collision part 21 may be provided in the inner surface so that a flow path may be disturbed inside a duct. Thereby, the particle | grains which collided with the particle | grain collision part 21 are collect | recovered, and collection | recovery efficiency can be improved further. For the particle collision portion, a mesh-like filter, a wire mesh, or the like can be used.

(Embodiment 2)
FIG. 8 is a front view of an installation example of the ventilation device according to the second embodiment of the present invention. FIG. 9 is a configuration diagram showing a section DD ′ of the ventilator according to the second embodiment of the present invention.

  The ventilation device 1 includes a particle swirl separating unit 3 that swirls an air stream containing particles and separates the particles, and a particle recovery chamber 6 that collects and stores the particles separated by the particle swirl separating unit 3. A connecting portion 22 and a duct 5 are provided on the downstream side of the particle swirl separating means.

  In the ventilator 1 of the present invention, the shape of the connecting portion 22 is different from that of the connecting portion 4 of the first embodiment. That is, the top surface of the connecting portion 22 is inclined downward toward the lower end of the duct 5.

  When air containing very fine smoke or mist-like water or oil mist is sucked in, the components that could not be collected by the particle swirl separating means 3 and the particle recovery chamber 6 become droplet-like dirt and connected. It may adhere to the part 4 and the duct 5. If these stains are left for a long period of time, they may cause mold and odor.

  When such droplet dirt adheres to the connection portion 22 and the duct 5, the droplet descends through the inner wall of the duct 5 extending upward from the connection portion 4 and reaches the lower end of the duct 5. . On the other hand, the droplets adhering to the top surface of the connecting portion 4 also move according to the inclination of the top surface and reach the lower end of the duct 5. When droplets are collected at the lower end of the duct 5 and become so large that the droplets cannot withstand their own weight, the droplets will fall directly below.

  Here, when the duct 5 has a cylindrical shape, the diameter of the duct 5 is designed to be smaller than the diameter of the recovery chamber top surface 12. Thereby, the liquid droplet falling from the lower end of the duct is landed on the top surface of the recovery chamber, and is recovered from the hole 13 to the particle recovery box along the inclination of the top surface of the recovery chamber. Thereby, the recovery rate of droplets can be improved. Further, since the droplets adhering to the top surface of the connection portion 22 do not take a path of descending through the side wall of the connection portion 22, it can be recovered from the connection portion 4 to the particle recovery box in a shorter time, and mold is generated. It is possible to obtain an effect that it is difficult to generate odors.

  The ventilator according to the present invention comprises a plurality of particle swirl separation means on the outer periphery of the particle recovery chamber, and flows out from an outlet of the particle swirl separation means and a hole provided in the top surface of the particle recovery chamber. The structure is such that air merges at the connecting portion. This improves the collection efficiency of the particles generated from the cooking utensil, improves the maintainability by consolidating the particles separated in the cyclone unit into one particle reservoir, collects the particles attached to the duct, and collects the particles. It is possible to provide a ventilator with improved recovery efficiency, and it is expected to be used as a ventilator used in homes and canteens.

DESCRIPTION OF SYMBOLS 1 Ventilator 2 Cooking utensil 3 Particle swirl separation means 4 Connection part 5 Duct 6 Particle recovery chamber 7 Inlet 8 Top surface 9 Outlet 10 Outlet 11 Extending part 12 Recovery chamber top 13 Hole 13 Rib 15 Particle recovery box 16 Cylindrical body 17 Central axis 18 Turning promotion surface 19 Start end of turning promotion surface 20 End of turning promotion surface 21 Particle collision part 22 Connection part 101 Ventilator 102 Guide plate 103 Side plate 104 First duct 105 Cyclone part 106 Second duct 107 Cooking Appliance 201 Casing 202 Airflow inlet 203 Airflow outlet 204 Particle outlet 205 Particle reservoir 206 Duct

Claims (5)

A particle swirl separating unit that is installed in an air blowing path containing particles and swirls air to separate the particles, a particle recovery chamber for collecting and storing particles separated by the particle swirl separating unit, and the particle swirl separation In the ventilator provided with a connecting portion that forms an air passage on the downstream side of the means and a duct extending upward from the connecting portion, the particle swirl separating means is provided on the inlet and the top surface provided on the bottom surface side. A first cylindrical body that discharges particles from a discharge port provided on a side surface thereof and allows the air to be treated to pass through, and the particle recovery chamber has a hole in its top surface. And a second cylindrical body provided with at least three so that the direction of the swirling flow of the particle swirling / separating means is the same in the periphery. And the connecting part is the particle separation means and particle recovery unit. The air flowing out from the outlet and the hole is joined so as to cover the top surface of the particle, and is lowered from the top surface of the particle swirl separating means toward the hole in the top surface of the recovery chamber. Ventilation device characterized by providing an inclination in the. The ventilating apparatus according to claim 1, wherein the outlet of the particle swirl separating means includes an extending portion extending in the duct direction from the outlet. The ventilator according to claim 1, wherein the top surface of the connection portion has a shape inclined toward the duct. The ventilation apparatus of any one of Claim 1 to 3 provided with the particle | grain collision part in the inner surface of the connection part. The ventilator according to claim 3 or 4, wherein the minimum diameter of the duct is smaller than the diameter of the top surface of the recovery chamber.

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