JP7312935B2 - Oil smoke collector - Google Patents

Description

TECHNICAL FIELD The present invention relates to a greasy smoke collecting device that collects scattered oil particles (hereinafter referred to as greasy smoke) generated during cooking or the like and removes greasy smoke from the air.

Conventionally, this type of soot collecting device is known to use a punching filter or the like in which holes are provided in a metal plate.

A circular punching filter is installed on the upstream side of the fan for exhausting the oily smoke, and when the air containing the oily smoke passes through the punching filter, the oily smoke collides with the punching filter and collects the oily smoke. Then, by rotating the circular punched filter and bringing it into contact with the attached substance removing means, the oil adhering to the punched filter is removed (see, for example, Patent Document 1).

Further, by stacking the filter in 3 to 4 layers, the oil collection efficiency is further improved (see, for example, Patent Document 2).

Japanese Unexamined Patent Application Publication No. 2011-232005 JP-A-10-15325

The punching filter used in the oily smoke collecting device of Patent Document 1 does not have a very high oily smoke collecting performance, and the oily smoke that cannot be completely removed adheres to the downstream fan or the like. In addition, if oil-adhered punching filters continue to be used, clogging occurs due to the adhesion of dust, etc., and pressure loss increases, so periodic cleaning of the punching filters is necessary. Fans also require regular cleaning because oily smoke and dust adhere to reduce blade clearances and reduce airflow.

There is also a filter with improved oil smoke collection performance as in Patent Document 2, but this also requires regular cleaning because the filter will clog if used continuously.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an oily smoke collecting device which has high oily smoke collecting performance and which does not require periodic cleaning.

そして、この目的を達成するために、本発明に係る油煙捕集装置は、流出口と流入口を有したケースと、ケースの内部には、流出口と連通したチャンバー空間と、流入口の奥部に形成した流入空間と、チャンバー空間と流入空間を連通させる通風路とを備え、通風路には、流入空間側からチャンバー空間側へ該通風路の通風方向に沿って圧縮空気を噴射させる空気噴出口と、通風路の出口側に空気噴出口に対向する衝突面とを配置し、流入口は、ケースの底面中央部に開口し、流入空間は、流入口からケースの内部に向けて延設した第一の筒体と、該第一の筒体の端部から軸方向に第一の隙間を開けて配置した頂面とによ
The outer peripheral end of the top surface is connected to a second cylinder extending toward the bottom of the case outside the first cylinder, the end of the second cylinder is arranged with a second gap from the bottom of the case, the first gap serves as the entrance of the ventilation passage, the second gap serves as the exit of the ventilation passage, and the ventilation passage is formed by the first and second tubular bodies, thereby achieving the intended purpose.

According to the present invention, the moving speed of the oil particles is increased by the momentum of the compressed air jetted from the air jet port, and the oil particles move toward the collision surface. Since the particles move at a high speed due to the injection of compressed air, even particles with a small diameter adhere to the collision surface, so the oil smoke collection performance is improved.

The figure which shows the example of the system using the oil smoke collecting device of embodiment of this invention. 1 is an external perspective view of an oil smoke collecting device according to an embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing of the soot collecting device of embodiment of embodiment of this invention The perspective view which shows the internal structure of the soot collector of this invention. FIG. 2 is an enlarged view of the oil collecting portion of the soot collecting device of the embodiment of the present invention;

The soot collecting device according to the present invention comprises a case having an outlet and an inlet, a chamber space communicating with the outlet , an inlet space formed in the inner part of the inlet , and a ventilation passage communicating between the chamber space and the inlet space. .

As a result, the moving speed of the oil particles is increased by the momentum of the compressed air jetted from the air jet port, and the oil particles move toward the collision surface, so that the oil particles adhere to the collision surface due to inertial force. Since the particles move at a high speed due to the injection of compressed air, even particles with a small diameter adhere to the collision surface, so the oil smoke collection performance is improved.

again,the present inventionOil smoke collection device pertaining toandteeth,flowthe entrance is, KeAn opening is made in the center of the bottom of the base,flowThe entry space isflowfrom the entranceKea first cylindrical body extending toward the interior of the base;,and a top surface arranged with a first gap in the axial direction from the end of the first cylinder,topThe outer peripheral edge of the face isNo.Outside one cylinderof the caseconnected to a second cylindrical body extending toward the bottom,No.The end of the second cylinder is,Placed with a second gap to the bottom of the casebeen,No.one gapthroughIt becomes the entrance of the airway,No.two gapsthroughIt becomes the exit of the airway,throughthe wind path, the firstFirst cylinder and second cylinderandIt has a configuration formed by

As a result, the airflow flowing through the ventilation passages is directed in the direction of the bottom of the case, that is, in the direction of gravity, so the direction of the injection of compressed air that increases the moving speed of the oil smoke particles is the same as the direction of gravity. Therefore, the movement speed of the oil smoke particles can be increased by the two effects of the injection of the compressed air and the force due to gravity.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a configuration in which the oil smoke collecting device 1 of the present invention is installed above the cooking stove 2 in the ceiling space. A soot collector 1 and a blower 3 are installed in the ceiling space, and the duct 4 is extended to the outside in order to connect them with a duct 4 and discharge them to the outside. The blower device 3 in the present embodiment is a sirocco fan, which is a type of centrifugal blower, and generates wind by rotating blades with a motor.

An opening 6 is provided in the ceiling surface 5 at the position where the oily smoke collecting device 1 is installed, and communicates so that indoor air containing the oily smoke generated by the cooking stove 2 flows into the oily smoke collecting device 1. - 特許庁

A plate-like rectifying plate 7 is provided in the opening 6 , and the air passes around the rectifying plate 7 and flows into the soot collector 1 . In addition, a weir 8 is provided around the opening 6 on the ceiling surface 5 on the room side to prevent the generated oily smoke from leaking. Note that the current plate 7 and the weir 8 may be omitted.

A pipe 10 is laid from a compressor 9 to the soot collector 1 to take in compressed air.

FIG. 2 shows a perspective view of the soot trapping device 1 as viewed obliquely from below.

The soot collecting device 1 comprises a box-shaped case 11 as a housing, and has an inlet 13 opened at the center of a bottom surface 12 and an outlet 15 opened at the center of a side surface 14 .

FIG. 3 shows a cross-sectional view of the soot collector 1 .

A chamber space 16 is provided inside the case 11 . Airflow can be caused to flow from the inlet 13 to the outlet 15 by creating a negative pressure in the chamber space 16 with the air blower 3 connected to the outlet 15 side.

A first cylindrical body 17 extends upward from the inlet 13 of the bottom portion 12 . The first cylindrical body 17 is a double structure having a circular ridgeline on its upper end. The double structure is a tubular wall that is thicker than the plate forming the case 11 . A gently curved surface is formed from the inner peripheral side to the outer peripheral side of the cylindrical body across the ridgeline. The inside of such a first cylinder 17 may be hollow or filled.

A collision surface 18 is provided at a portion where the outer peripheral side of the first cylindrical body 17 and the bottom portion 12 are connected. In this embodiment, the collision surface 18 is R-shaped. The semicircular rounded shape of the upper portion of the first cylindrical body 17 and the curved shape of the collision surface 18 are shapes for reducing the pressure loss of the airflow.

A conical top surface 20 is provided in the upper portion by opening the first cylindrical body 17 and the first gap 19 , and the space from the inlet 13 to the top surface 20 is defined as an inflow space 21 . The outer peripheral end of the top surface 20 is connected to a second cylinder 22 extending toward the bottom surface 12 outside the first cylinder 17, and the end of the top surface 20 is located at a position where a second gap 23 is provided between the bottom surface 12 and the bottom surface 12.

The ventilation passage 24 is formed by the difference between the diameter of the outer circumference of the first cylindrical body 17 and the diameter of the inner circumference of the second cylindrical body 22, the first gap 19 is the entrance of the ventilation passage 24, and the second gap 23 is the exit of the ventilation passage 24.
If the air passage 24 is formed by a space sandwiched between the outer circumference of the first cylindrical body 17 and the inner circumference of the second cylindrical body 22, the straightness of the air passing through the air passage 24 can be easily generated, which is more preferable.

An air hose 25 through which compressed air passes is arranged in an annular shape on the upper part of the ventilation path 24 . The annular air hose 25 is provided with air ejection ports 26 having holes for ejecting compressed air at regular intervals along the axial direction of the second cylindrical body 22 (one-dot chain line in FIG. 3). The air hose 25 extends from the top surface or side surface of the case 11 to the ventilation path 24 . The outside of the case 11 is connected to the compressor 9 through the pipe 10 . The air jets 26 are simply arranged in a circular shape above the ventilation passage 24 . In the present embodiment, air ejection port 26 is formed by opening air hose 25 , but air ejection port 26 may be formed by attaching a nozzle to air hose 25 .

FIG. 4 is a perspective view with the case 11 removed.

The air hose 25 enters the inside of the ventilation passage 24 from the vicinity of the joint of the top surface 20 and the second cylinder 22, goes around the upper part of the ventilation passage 24, and comes out of the second cylinder 22 again, and the end of the air hose 25 is closed. The part where the air hose 25 goes around the upper part of the ventilation path 24 may be formed as a ring with a hollow inside without exposing the end part to the outside of the second cylindrical body 22, and the part may be branched in three directions and connected to the outside of the ventilation path. Alternatively, the air hose 25 can be arranged outside the top surface 20 and the air ejection port 26 can be opened inside from the top surface 20 .

In FIG. 3, the side of the bottom surface portion 12 further outside the collision surface 18 is an oil receiving portion 27, which receives the oil collected by the collision surface 18. As shown in FIG. The outermost peripheral portion of the oil receiving portion 27 has a rounded and upwardly raised shape, not only for preventing the diffusion of the received oil but also for reducing the pressure loss of the airflow.

In the above configuration, when the air blower 3 is operated, the inside of the case 11 becomes negative pressure, so that the air in the room flows in from the inlet 13 .

When cooking is performed on the cooking stove 2 and greasy smoke is generated, the greasy smoke flows in from the inflow port 13 together with the air. The airflow passes upward through the inflow port 13 , changes direction in the inflow space 21 , and flows through the first gap 19 into the ventilation passage 24 . The direction of the airflow in the ventilation passage 24 is downward, which is the same as the direction of gravity. In the ventilation passage 24, the compressed air is jetted from the air jet port 26 along the axial direction of the second cylindrical body 22, so that the air containing soot can collide with the collision surface 18. - 特許庁After that, it flows out from the second gap 23 , is discharged into the chamber space 16 , and goes toward the blower device 3 from the outlet 15 . After passing through the blower 3, the air is discharged to the outside.

Next, the principle of collecting soot will be explained. FIG. 5 is an enlarged view of a part for collecting soot.

The airflow containing oily smoke that has flowed into the ventilation passage 24 through the first gap 19 flows downward through the ventilation passage 24 . In addition to the speed of the airflow flowing by the blower 3, the speed of the airflow passing through the ventilation passage 24 is increased by vigorously blowing out the compressed air from the air jet port 26 opposed to the collision surface 18.例文帳に追加At the same time, the soot particles also increase their speed toward the collision surface 18 . Although the airflow is bent sideways by the collision surface 18, the soot particles are heavy, so they collide with the collision surface 18 by inertial force and are collected.

In general, particles with a small particle diameter are relatively light in weight, and therefore have a low velocity toward the collision surface 18 and weak inertial force. However, as in this embodiment, the speed of the air is increased by the compressed air jetted from the air jet port 26, so that even small particles can be collected. By injecting compressed air from the air ejection port 26 at a position facing the collision surface 18, the oil collection performance can be dramatically improved.

In FIG. 5, the arrows represent the flow and collection action of the air current, the dotted arrows are the air containing oily smoke, the solid black arrows are the injection of compressed air, and the white arrows are the air from which the oily smoke has been removed.

In the present embodiment, since the airflow flowing through the ventilation passage 24 is directed downward in the same direction as the direction of gravity, the gravitational force also acts on the oil smoke particles toward the collision surface 18, further increasing the speed of the oil smoke particles toward the collision surface 18, increasing the inertial force, and further enhancing the oil smoke collection performance.

Since the compressed air is jetted from the air jet port 26 in the same direction as the flow direction of the airflow generated by the blower device 3, the dynamic pressure energy of the compressed air can be applied to the airflow, and the pressure loss can be reduced. That is, it is possible to reduce the pressure loss while enhancing the soot collection performance.

In the present embodiment, the collision surface 18 has an R shape, but the oil smoke particles can be attached to the collision surface 18 by inertial force. The collision surface 18 may be a surface perpendicular to the injection direction of the compressed air instead of the R shape. Also, the rear surface of the bottom surface portion 12 may be used as the collision surface 18 as well.

Particles of the oil adhering to the collision surface 18 combine with each other to become a liquid state, which accumulates in the oil receiving portion 27 . Therefore, as shown in FIG. 5, the oil receiving portion 27 is provided with an oil outlet 29 (FIG. 5) on the bottom surface thereof. The oil outlet 29 is connected by a hose (not shown) to an oil reservoir 28 provided on the back side of the current plate 7 shown in FIG. It is even better if the oil receiving portion 27 is inclined downward toward the oil outlet 29 . Note that the collected oil may be discharged without being stored in the oil reservoir 28 .

As described above, this device does not have a narrow passage with a filter or the like for collecting oily smoke in the middle of the air flow, so there is no concern about clogging with oily smoke or dust. In other words, periodic cleaning of the soot collecting device 1 is unnecessary. It has a structure that can improve oil smoke collection performance and reduce pressure loss without narrow passages. Since the collected oil is stored in the oil storage part 28, when the oil storage part 28 is filled with oil, the stored oil is simply thrown away, so maintenance is easy. Furthermore, since the oily smoke collection performance is high, it is possible to prevent the air blower 3 and the duct 4 downstream of the apparatus from becoming dirty, so cleaning of the air blower 3 is almost unnecessary.

This device eliminates the need to clean the device necessary to exhaust oily smoke, so it can be installed in the ceiling space. Unlike the conventional ventilating device projecting downward from the ceiling above the cooking stove 2, the ventilation device can be housed in the ceiling, so that the projection from the ceiling can be almost eliminated, so that the effect of making the room look neat is also obtained.

(Embodiment 2)
Descriptions of the same components as in the first embodiment are omitted. In this embodiment, compressed air from a compressor 9 is used as the air blower 3 to blow air. A plurality of nozzles for injecting compressed air are arranged in the air blower 3 toward the downstream side, and when the compressed air is injected from the nozzles, the air around the nozzles is caught in the injection flow to generate an induced airflow flowing downstream, and the inside of the case 11 can be made negative pressure.

As a result, both the soot trapping device 1 and the blowing device 3 can be operated only by the compressed air from the compressor 9, which eliminates the need for electrical wiring, saves construction work, and facilitates installation even in a narrow space above the ceiling.

Since the oily smoke collecting device according to the present invention makes it possible to improve the oily smoke collection performance, it is useful as a device for removing oily smoke from the air, etc., which is used when exhausting oily smoke generated during cooking.

REFERENCE SIGNS LIST 1 greasy smoke collecting device 2 cooking stove 3 air blower 4 duct 5 ceiling surface 6 opening 7 straightening plate 8 weir 9 compressor 10 pipe 11 case 12 bottom portion 13 inlet 14 side portion 15 outlet 16 chamber space 17 first cylinder 18 collision surface 19 first gap 20 top surface 21 inflow space 22 Second cylindrical body 23 Second gap 24 Ventilation path 25 Air hose 26 Air ejection port 27 Oil receiver 28 Oil reservoir 29 Oil outlet

Claims (1)

a case having an outlet and an inlet;
The case includes a chamber space communicating with the outflow port, an inflow space formed at the back of the inflow port, and a ventilation passage communicating the chamber space and the inflow space,
The ventilation passage is provided with an air ejection port for ejecting compressed air along the ventilation direction of the ventilation passage from the inflow space side to the chamber space side, and a collision surface facing the air ejection port on the exit side of the ventilation passage ,
The inflow port opens at the center of the bottom surface of the case,
The inflow space is formed by a first cylindrical body extending from the inflow port toward the inside of the case, and a top surface arranged with a first gap in the axial direction from the end of the first cylindrical body,
The outer peripheral end of the top surface is connected to a second cylindrical body extending toward the bottom surface of the case outside the first cylindrical body,
The end of the second cylindrical body is arranged with a second gap with respect to the bottom surface of the case, the first gap serves as an inlet of the ventilation passage, and the second gap serves as an outlet of the ventilation passage,
The oil smoke collecting device , wherein the air passage is formed by the first cylinder and the second cylinder .

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