JP2007032992A - Flue gas removing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flue gas removing device capable of reducing a size and capable of enhancing maintainability. <P>SOLUTION: Cylindrical filters 16, 17 are provided in a lower side of a roaster 2 installed in a table 1, an aqueous alkaline solution A is made to flow down from supply parts 22, 23 in upper parts of the filters 16, 17, and liquid drops or liquid films are formed on filter faces 16a, 17a to pass combustion gas and exhaust gas therethrough. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a flue gas removal device, and more particularly to a flue gas removal device that removes smoke and exhaust gas containing oil generated when meat is baked in the vicinity of a cooking unit without discharging it to the outdoors. is there.

  In a so-called yakiniku restaurant or the like, a roaster is installed at the center of a table on which a customer sits. However, when a roaster is installed on a table to bake meat or the like, oily smoke having a fairly strong odor is dissipated in the store by baking a lot of oily meat juice or the like. Therefore, in a conventional yakiniku restaurant or the like, a smoke removal device is provided in order to prevent the smoke or exhaust gas generated when cooking yakiniku or the like from filling the store.

  This flue gas removal device collects smoke and exhaust gas generated from each table in an exhaust duct from above or below the roaster, and then purifies the air with an exhaust gas odor removal device outside the store. To exhaust. Such a conventional smoke removal device is disclosed in, for example, Patent Document 1.

JP 2004-176773 A

  In recent yakiniku restaurants, while the idea of how to increase the number of tables in a limited guest room is being devised, the establishment of large stores with 100 or more tables is being promoted. However, since the conventional smoke removal device described above exhausts the oil smoke through a plurality of relay ducts, the entire device becomes large with an increase in the number of tables and a store size, This led to an increase in installation costs.

  In addition, a large amount of flue gas treatment must be performed in a certain time, and furthermore, the duct installation space is limited, so that the duct route is complicated. As a result, the direction and speed of the oily smoke change suddenly in the duct, making it difficult for the oily smoke to flow, and deposits due to pressure loss, oily smoke, and the like are generated. In order to compensate for this pressure loss, the apparatus is further increased in size. Moreover, in stores in urban areas and towns, problems with neighboring residents due to exhaust outside the store also occur, making it difficult to secure not only space limitations but also installation locations.

  Furthermore, in the conventional smoke removal device, since oil smoke is concentrated at the end of the device, a large amount of oil may locally adhere to the duct, leading to a cause of fire. And even if it was going to remove the oil adhering to this duct, workability | operativity at the time of a maintenance was bad by the enlargement of the whole apparatus and complication of a duct path | route, and led to the increase in maintenance cost.

  Therefore, this invention solves the said subject, and aims at providing the flue gas removal apparatus which can aim at size reduction and an improvement of maintainability.

A flue gas removal apparatus according to a first invention for solving the above-mentioned problem is as follows.
A smoke removal device that sucks and exhausts smoke and exhaust gas generated from a grill cooking section formed on a table,
A cylindrical filter is provided on at least one of the upper and lower sides of the grilled cooking unit,
The filter has a supply part for storing liquid supplied above, and a liquid or a liquid film is formed on the filter surface by the liquid flowing down from the supply part, and smoke and exhaust gas are passed through the filter surface. It is characterized by making it.

A smoke removal apparatus according to the second invention for solving the above-mentioned problems is as follows.
In the smoke removal apparatus according to the first invention,
The filter is formed into a cylindrical shape with at least a double roll of a sheet-like one, and the filter surfaces have a gap.

A smoke removal apparatus according to a third invention for solving the above-mentioned problem is as follows.
In the smoke removal apparatus according to the first or second invention,
The vent hole provided in the filter surface is characterized by being opened as small as it is formed below.

A smoke removal apparatus according to a fourth invention for solving the above-mentioned problem is as follows.
In the smoke removal apparatus according to any one of the first to third inventions,
A plurality of the filters are provided and arranged in multiple stages on concentric circles.

A smoke removal device according to a fifth aspect of the present invention for solving the above problem is as follows.
In the smoke removal apparatus according to any one of the first to fourth inventions,
The filter sucks smoke and exhaust gas from the inside or outside.

A smoke removal apparatus according to a sixth invention for solving the above-described problem is
In the smoke removal apparatus according to any one of the first to fourth inventions,
An exhaust port provided in the innermost filter,
A liquid reservoir for storing liquid flowing down below the filter;
The lower end of the filter is immersed in the liquid in the liquid reservoir, and the exhaust port is disposed above the liquid surface of the liquid reservoir.

A smoke removal apparatus according to a seventh invention for solving the above-mentioned problem is as follows.
In the smoke removal apparatus according to the sixth invention,
A liquid circulation device is provided that cleans the liquid in the liquid reservoir and supplies the liquid to the supply unit.

The smoke removal apparatus according to the eighth invention for solving the above-mentioned problems is
In the smoke removal apparatus according to the sixth or seventh invention,
The exhaust port communicates with the vicinity of the grilled cooking unit.

  According to the flue gas removal apparatus according to the first aspect of the present invention, there is provided a flue gas removal apparatus that sucks and exhausts the smoke and exhaust gas generated from the grill cooking section formed on the table, wherein at least above the grill cooking section or A cylindrical filter is provided on either one of the lower sides, and the filter has a supply part for storing the liquid supplied above, and a liquid or a liquid film is formed on the filter surface by the liquid flowing down from the supply part. By forming it and allowing smoke and exhaust gas to pass through the filter surface, it is possible to reduce the size and improve the maintainability.

  According to the smoke removal device according to the second invention, in the smoke removal device according to the first invention, the filter is formed in a cylindrical shape by making at least a double roll of a sheet-like material, and the filter surface By having a gap between each other, the liquid can surely flow down along the filter surface.

  According to the smoke removal device according to the third invention, in the smoke removal device according to the first or second invention, the vent hole provided in the filter surface is opened so as to be formed below, The liquid can easily stay on the filter surface.

  According to the smoke removal device according to the fourth invention, in the smoke removal device according to any one of the first to third inventions, by providing a plurality of the filters and arranging them in multiple stages on a concentric circle, The oil component and odor component fine particles can be easily adsorbed from the exhaust gas.

  According to the smoke removal device according to the fifth invention, in the smoke removal device according to any one of the first to fourth inventions, the filter sucks smoke and exhaust gas from the inside or the outside. The degree of design freedom in the exhaust system can be improved.

  According to the smoke removal device according to the sixth invention, in the smoke removal device according to any one of the first to fourth inventions, the exhaust port provided in the filter disposed on the innermost side, and the filter A liquid reservoir for storing the liquid flowing down, and the lower end of the filter is immersed in the liquid in the liquid reservoir, while the exhaust port is disposed above the liquid level of the liquid reservoir. Thus, smoke and exhaust gas can be reliably passed through the filter surface, and liquid can be prevented from entering the exhaust port.

  According to the smoke removal device according to the seventh invention, in the smoke removal device according to the sixth invention, by providing a liquid circulation device for cleaning the liquid in the liquid reservoir and supplying it to the supply unit, Maintenance can be improved.

  According to the flue gas removal apparatus according to the eighth aspect of the present invention, in the flue gas removal apparatus according to the sixth or seventh aspect of the invention, the exhaust port is communicated with the vicinity of the grilled cooking section, thereby facilitating indoor air conditioning control. Can be.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a schematic sectional view of a table installed in a yakiniku restaurant, FIG. 2 is a schematic sectional view of a flue gas removing apparatus according to an embodiment of the present invention, FIG. 3 is a schematic view of a filter, and FIG. 4 is a flue gas removing apparatus. FIG. 5 is a diagram showing another shape of the filter. In addition, the arrow in a figure has shown the flow of burning smoke and exhaust gas.

  As shown in FIG. 1, the table 1 is installed in a so-called yakiniku restaurant or the like, and a roaster 2 serving as a cooking unit is provided at the center thereof, and a lower portion of the roaster 2 is disposed at the bottom. A smoke removal device 3 is provided. The roaster 2 is composed of a heating source 2a, a wire net-like or gold lattice-like heating plate 2b, and the like, and an exhaust passage 4 communicating with the smoke removal device 3 is formed around the roaster 2. Yes. Further, the smoke removal device 3 is communicated with the exhaust pipe 5. Accordingly, customers who enter the yakiniku restaurant can sit around the table 1 and place food such as meat on the heating plate 2b and cook it by the heat of the heating source 2a. Smoke, exhaust gas or the like containing oil that is sometimes generated can be sucked into the exhaust passage 4.

  Next, the smoke removal device 3 will be described with reference to FIG. As shown in FIG. 2, the smoke removal device 3 includes a cylindrical main body cylinder 11, and a conical lid member 12 is fixed to the upper opening of the main body cylinder 11 with a screw 13. A cylindrical connecting portion 14 is formed at the center of the lid member 12, and this connecting portion 14 is connected to the exhaust passage 4. Further, a cylindrical exhaust port 15 is formed on the bottom surface of the main body cylinder 11 so as to penetrate in the vertical direction substantially at the center of the bottom surface, and the lower end of the exhaust port 15 is connected to the exhaust pipe 5. .

  A cylindrical filter 16 is provided inside the main body cylinder 11 so as to surround the exhaust port 15. The filter 16 is disposed concentrically with the filter 16 on the outer side in the radial direction, and is higher in diameter than the filter 16. A large filter 17 is provided. Here, as shown in FIG. 3, the filters 16 and 17 are made of metal or resin, and it is preferable to use a stainless material excellent in corrosiveness under use conditions described later. Further, the filters 16 and 17 are formed into a cylindrical shape with at least two or more sheets wound in the present embodiment (double winding in this embodiment), and the filter surfaces 16a and 17a have innumerable openings that are open in a grid shape. The pores 16b and 17b are formed, and the filter surfaces 16a and the filter surfaces 17a have a predetermined gap S. The opening areas of the air holes 16b and 17b are large enough to form a liquid film continuously and uniformly when an alkaline aqueous solution A described later flows down the filter surfaces 16a and 17a. .

  As shown in FIG. 4, trays 18 and 19 having substantially spherical upper surfaces are provided inside the upper portions of the filters 16 and 17, while ring-shaped side wall members 20 and 21 are provided outside the upper portions. The tray 18 and the side wall member 20 form a supply unit 22, and the tray 19 and the side wall member 21 form a supply unit 23. The lower ends of the filters 16 and 17 are fixed by fastening members 24 and 25 having a ring shape and a U-shaped cross section.

  As shown in FIG. 2, a supply pipe 27 connected to the tank 26 is disposed above the trays 18 and 19, and the supply pipes 27 a and 27 b divided into two are formed at the tip of the supply pipe 27. Is formed. The supply port 27a is disposed on the tray 18 side, while the supply port 27b is disposed on the tray 19 side. An alkaline aqueous solution A (water or neutral aqueous solution) made of potassium or sodium is stored in the tank 26, and the alkaline aqueous solution A is sucked up by a pump 28 provided in a supply pipe 27. Further, a discharge pipe 29 connected to the lower side portion of the main body cylinder 11 is communicated with the tank 26.

  The exhaust pipe 5 is provided with a fan 30 that generates a forced flow of exhaust. By driving the fan 30, the inside of the exhaust passage 4 has a negative pressure above the upper side of the roaster 2, and air can flow into the exhaust passage 4 from above the roaster 2. And the exhaust pipe 5 is opened toward the lower side of the table 1 so as to exhaust the sucked air into the store.

  Accordingly, the alkaline aqueous solution A supplied to the supply units 22 and 23 by driving the pump 28 flows down along the filters 16 and 17 and is stored in the lower portion of the main body cylinder 11 (liquid storage unit). At this time, the alkaline aqueous solution A stored in the lower portion of the main body cylinder 11 is returned to the tank 26 by the discharge pipe 29. The height of the liquid level of the alkaline aqueous solution A stored therein is always constant. The height of the filters 16 and 17 is so high that the lower ends are immersed. That is, the connection height of the discharge pipe 29 is set higher than the lower ends of the filters 16 and 17. The opening of the exhaust port 15 is also installed at a position sufficiently higher than the liquid level, and is opened below the tray 18. Although not shown, the tank 26 is provided with a cleaning device for cleaning the alkaline aqueous solution A, and the cleaned alkaline aqueous solution A is always circulated. That is, the tank 26, the supply pipe 27, the pump 28, the discharge pipe 29, and the cleaning device constitute a liquid circulation device.

  Next, the procedure and operation of the smoke removal device 3 according to the present invention having the above-described configuration will be described.

  The heating plate 2b is heated by the heat transmitted from the heating source 2a, and the food ingredients such as meat placed thereon are cooked. The smoke and exhaust gas containing oil generated at this time is sucked into the smoke removal device 3 from above the roaster 2 through the exhaust passage 4 by driving the fan 30.

  On the other hand, in the smoke removal device 3, the alkaline aqueous solution A is sucked up from the tank 26 by driving the pump 28 and supplied to the supply units 22 and 23 through the supply pipe 27. The alkaline aqueous solution A stored in the supply units 22 and 23 is smoothly supplied to the filters 16 and 17 due to the inclination of the upper surfaces of the trays 18 and 19, and becomes droplets along the filter surfaces 16a and 17a of the filters 16 and 17. Be flowed down. At this time, the alkaline aqueous solution A flows into the gap S using the filter surfaces 16a and 17a as a guide, and forms a liquid film in the vent holes 16b and 17b opened in a grid shape.

  The smoke and exhaust gas that has entered the main body cylinder 11 passes through the filter surface 17 a from the radially outer side of the filter 17 and then passes through the filter surface 16 a from the radially outer side of the filter 16. Therefore, the smoke and the exhaust gas are brought into contact with the droplets and the liquid film of the alkaline aqueous solution A, and the fine particles of the oil component and the odor component of the smoke and the exhaust gas are adsorbed. By being adsorbed, the smoke and the exhaust gas become clean air and are led from the exhaust port 15 through the exhaust pipe 5 into the store.

  Here, since the lower ends of the filters 16 and 17 are immersed in the alkaline aqueous solution A accumulated in the lower part of the main body cylinder 11, the smoke and the exhaust gas always pass through the filter surfaces 16a and 17a. Further, since the exhaust port 15 is installed at a position sufficiently higher than the liquid level, not only can the alkaline aqueous solution A be prevented from entering, but also the filter 16 is opened below the tray 18. It is also possible to prevent the intrusion of the droplets flowing down.

  In the present embodiment, the vent holes 16b and 17b formed in the filter surfaces 16a and 17a are opened in a grid shape. However, as shown in FIG. 5, for example, the circular vent holes 16c and 17c are provided. It may be formed or may be appropriately changed to other shapes. Further, the opening areas of the vent holes 16c and 17c may be reduced as the filter surfaces 16a and 17a are located below. Thereby, while the liquid film of the alkaline aqueous solution A can be easily formed in the vicinity of the inlet of the exhaust port 15 where the suction is concentrated, the stagnation rate of the alkaline aqueous solution A with respect to the filter surfaces 16a and 17a can be increased. The oil component and odor component of exhaust gas can be adsorbed efficiently. Further, the air holes may be formed without making the shape and size uniform.

  Moreover, although the smoke removal apparatus 3 which concerns on this invention was applied to the table provided with the cooking part installed in a yakiniku store, it was applied to the table provided with the cooking part installed in other stores, for example, a restaurant, a restaurant, etc. Can also be applied. Further, the present invention can be applied to a home range or a hot plate, and can also be applied to a fryer of a commercial kitchen such as a canteen or a restaurant.

  In the present embodiment, the smoke and exhaust gas containing oil generated from the roaster 2 is exhausted from the exhaust pipe 5 provided below the table 1. When exhausting by suction from above, it is also possible to install the smoke removal device 3 above the roaster 2. And even if it is a case where the smoke removal apparatus 3 is provided above or below the table 1, the suction direction of the smoke and the exhaust gas may be from either the inside or the outside in the radial direction of the filter. The installation space such as the position and direction of the pipe can be freely changed, and the degree of freedom in designing the exhaust system can be improved. Furthermore, a dehumidifier having a dehumidifying function may be provided in the exhaust pipe 5 to dehumidify clean exhausted air.

  Therefore, according to the flue gas removal apparatus 3 according to the present invention, the cylindrical filters 16 and 17 are provided below the roaster 2 installed on the table 1, and the alkaline aqueous solution is supplied from the supply units 22 and 23 above the filters 16 and 17. By letting A flow down, forming a droplet or liquid film on the filter surfaces 16a and 17a and passing the smoke and exhaust gas, without exhausting the smoke and exhaust gas containing the generated oil to the outdoors, Since smoke can be discharged directly under the table 1, it is possible to reduce the size. Furthermore, since the path through which the smoke and exhaust gas pass is made short and simple, adhesion of oil can be suppressed as much as possible, and maintainability can be improved. And since it is not necessary to provide a duct, the fire in a duct can also be prevented.

  Further, the filter surfaces 16a and 17a are formed into a cylindrical shape by forming the filters 16 and 17 into at least double wraps from a sheet-like material, and forming a gap S between the filter surface 16a and the filter surfaces 17a facing each other. As a guide, the alkaline aqueous solution A easily flows into the gap S, and can be surely flowed down along the filter surfaces 16a and 17a.

  Further, by opening the vent holes 16c and 17c provided in the filter surfaces 16a and 17a so as to be formed downward, the alkaline aqueous solution A is likely to stagnate on the filter surfaces 16a and 17a and easily form a liquid film. Efficiency can be improved.

  Further, by providing the filter 17 arranged radially concentrically outside the filter 16, it is possible to easily adsorb fine particles of oil components and odor components from smoke and exhaust gas in a space-saving manner.

  Further, the smoke and exhaust gas are sucked from the radially outer side of the filters 16 and 17, and the smoke and exhaust gas are exhausted from the exhaust port 15 disposed in the innermost filter 16, so that the smoke and exhaust gas are exhausted. Since gas can flow in one direction, adsorption can be performed stably.

  Further, the lower ends of the filters 16 and 17 are always immersed in the alkaline aqueous solution A accumulated in the lower part of the main body cylinder 11, while the exhaust port 15 is opened below the tray 18 higher than the liquid level, thereby burning and exhausting smoke. Since the gas can be surely passed through the filter surfaces 16a and 17a, it is possible to prevent the alkaline aqueous solution A accumulated in the lower portion of the main body cylinder 11 and the alkaline aqueous solution A flowing down the filter 16 from entering the exhaust port 15. .

  Further, the maintenance performance can be improved by cleaning the alkaline aqueous solution A accumulated in the lower portion of the main body cylinder 11 and circulating it with the pump 28.

  Furthermore, the exhaust port 15 communicates with the inside of the store via the exhaust pipe 5, thereby facilitating indoor air conditioning control. This is because if the exhaust is exhausted outdoors as in the conventional smoke removal device, the room temperature must be adjusted and the burden on the air conditioning equipment increases. Can be made lighter, which is advantageous in terms of cost. Moreover, the environment of neighboring residents is not deteriorated.

  Applicable to heating cooker.

It is a schematic sectional drawing of the table installed in a yakiniku store. It is a schematic sectional drawing of the smoke removal apparatus which concerns on one Example of this invention. It is the schematic of a filter. It is a principal part detail drawing of a smoke removal apparatus. It is a figure which shows the other shape of a filter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Table 2 Roaster 2a Heating source 2b Heating plate 3 Smoke removal apparatus 4 Exhaust passage 5 Exhaust pipe 11 Body trunk 12 Cover member 13 Screw 14 Connection part 15 Exhaust port 16, 17 Filter 16a, 17a Filter surface 16b, 16c, 17b, 17c Ventilation hole 18, 19 Tray 20, 21 Side wall member 22, 23 Supply part 24, 25 Fastening member 26 Tank 27 Supply pipe 27a, 27b Supply port 28 Pump 29 Discharge pipe 30 Fan

Claims (8)

A smoke removal device for sucking and exhausting smoke and exhaust gas generated from a grill cooking section formed on a table,
A cylindrical filter is provided on at least one of the upper and lower sides of the grilled cooking unit,
The filter has a supply part for storing liquid supplied above, and a liquid or a liquid film is formed on the filter surface by the liquid flowing down from the supply part, and smoke and exhaust gas are passed through the filter surface. A flue gas removal device characterized in that The smoke removal apparatus according to claim 1,
The filter is formed into a cylindrical shape with at least a double sheet-like filter, and the filter surfaces have a gap. The smoke removal apparatus according to claim 1 or 2,
The smoke removal device, wherein a vent hole provided in the filter surface is formed to be smaller as it is formed below. The smoke removal apparatus according to any one of claims 1 to 3,
A plurality of the filters are provided and arranged in multiple stages on a concentric circle. In the flue gas removal apparatus in any one of Claims 1 thru | or 4,
The smoke removing apparatus, wherein the filter sucks in smoke and exhaust gas from the inside or outside. In the flue gas removal apparatus in any one of Claims 1 thru | or 4,
An exhaust port provided in the innermost filter,
A liquid reservoir for storing liquid flowing down below the filter;
The lower end of the filter is immersed in the liquid in the liquid reservoir, and the exhaust port is disposed above the liquid level of the liquid reservoir. The smoke removal apparatus according to claim 6,
A smoke exhausting device comprising: a liquid circulation device that cleans the liquid in the liquid reservoir and supplies the liquid to the supply unit. The smoke removal apparatus according to claim 6 or 7,
The exhaust port is in communication with the vicinity of the grill cooking unit.

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