JP2002085262A - Smokeless roaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the ignition of oil particles stuck to the inner wall of a duct 24 in a smokeless roaster 10. SOLUTION: An outer pot 13 is incorporated in a cooking opening part 12a formed at a table 11, an inner pot 14 is incorporated in the pot 13, a smoke discharging passage 17 communicating with a smoke discharging port 13a formed at the bottom of the pot 13 and the part 12a is segmented by the pot 14 and the pot 13, a grease filter 23 is arranged in the passage 17 or the duct 25, burning smoke, exhaust gas, etc., generated at the part 12a are discharged through a duct 24 and the oil particles in the smoke and exhaust gas are caught by the filter 23. A sieve net 24 for catching the sparks is arranged on the downstream of the filter 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an exhaust structure for a smokeless roaster.

[0002]

2. Description of the Related Art Conventionally, as one type of roaster, a duct is connected to a roaster to prevent smoke and exhaust gas generated when cooking grilled meat and the like from being filled in the store, and the smoke and exhaust gas are discharged outdoors. There is a known roaster that exhausts air to the air. This type of roaster is referred to as a smokeless roaster. An outer pot is fitted into a cooking opening formed in a table, an inner pot is stored in the outer pot, and a smoke outlet formed at the bottom of the outer pot and the cooking opening are formed. A smoke exhaust passage communicating between them is defined by the inner kettle and the outer kettle, a duct is connected to the smoke exhaust outlet, a grease filter is arranged in the smoke exhaust passage or the duct, and generated at the cooking opening. Smoke, exhaust gas, etc. are exhausted through a duct, and the grease filter is configured to capture oil particles in the smoke, exhaust gas.

[0003]

A conventional smokeless roaster uses a grease filter to capture smoke and oil particles in exhaust gas. However, if the grease filter is not cleaned and replaced regularly, the grease filter is not used. Oil particles accumulate in the filter and the purifying ability of the filter decreases, and the oil particles not removed by the filter gradually adhere to the inner wall of the duct to form an oil film. If the sparks generated in the cooking section fly over this oil film, there is a risk of ignition. The present invention has been made in view of such a problem,
An object of the present invention is to prevent ignition of oil particles attached to an inner wall of a duct in a smokeless roaster.

[0004]

According to the first aspect of the present invention, there is provided a burning smoke generated at a cooking opening formed in a table.
A smokeless roaster in which exhaust gas and the like are sucked and exhausted into a duct and smoked by a grease filter provided in the duct, and oil particles in the exhaust gas are captured, and a spark is provided on the downstream side of the grease filter. A sieve net for catching is arranged. The invention according to claim 2 incorporates an outer cooker into a cooking opening formed in a table, incorporates an inner cooker into the outer cooker, and provides a space between a smoke outlet formed at the bottom of the outer cooker and the cooking opening. A communicating flue gas passage is defined by the inner kettle and the outer kettle, and a duct is connected to the flue gas outlet,
A grease filter is arranged in the smoke exhaust passage or the duct, and the smoke generated at the cooking opening, the exhaust gas, etc. are exhausted through the duct, and the grease filter captures the smoke, the oil particles in the exhaust gas. A smokeless roaster characterized in that a sieve net for catching sparks is arranged downstream of the grease filter. According to a third aspect of the present invention, in the smokeless roaster according to the first or second aspect, the number of meshes of the sieve net is 80.
１５０150 mesh

[Action and Effect of the Invention]

According to the first or second aspect of the present invention,
Since the sparks are captured by the sieve net, it is possible to prevent the sparks from flying and igniting the oil particles attached to the inner wall of the duct. Since the sieve mesh is knitted with a wire having a circular cross section, the pressure loss is small. Therefore, even if it arrange | positions in a duct, it will not interfere with exhaust by a duct. In addition, since the sieve net is arranged downstream of the grease filter, it is possible to prevent the sieve net from being clogged with oil particles and reducing the exhaust function of the duct. According to the invention as set forth in claim 3, the number of meshes of the sieve mesh is set to 80 to 150 mesh. However, as a result of the experiment, the 80 mesh has a removal rate of fire powder of 60 to 70%, and if the number of meshes is smaller than 80 mesh, Insufficient removal of sparks. On the other hand, 150
With a mesh sieve net, the exhaust air volume of the duct is significantly reduced. The present invention is based on such experimental results,
By setting the mesh of the sieve net to 80 to 150,
The required fire powder removal effect and exhaust air volume can be achieved.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a smokeless roaster 10 according to an embodiment of the present invention. A cooking opening 12a is formed at the center of the top plate 12 of the table 11 of the smokeless roaster 10, and an outer pot 13 is incorporated in the opening 12a. The inner pot 14 is incorporated into the outer pot 13 and the inner pot 1
4 has a water tank 15 incorporated therein. Further, a charcoal pot 16 is incorporated inside the upper part of the water tank 15.

The outer pot 13 has a cylindrical shape with a smoke outlet 13a formed on the bottom surface, and a flange 13 formed on the upper outer peripheral surface.
b is connected to the table cabin 11a and fixed to the table 11. The inner pot 14 has a bottomed cylindrical shape, and its bottom surface is supported by three stepped portions 13c protruding at three locations on the inner peripheral surface of the outer pot 13 during the daytime, and the outer pot 13 and the inner pot 14 provide a cooking opening 12a. A smoke exhaust passage 17 that communicates with the smoke exhaust port 13a is defined.

The water tank 15 has a flange 15 formed at the upper end.
a is engaged with a ring frame 18 fitted to the inner peripheral surface of the cooking opening 12a and is suspended from the top plate 12 into the cooking opening 12a. An annular step 15 b is formed on the upper inner peripheral surface of the water tank 15, and the charcoal pot 16 is located at the upper end of the flange 1.
6a is fixed to the step portion 15b and installed inside the upper part of the water tank 15. A large number of through-holes 15c communicating with the smoke exhaust passage 17 are formed on the inner peripheral surface of the water tank 15 above the step 15b.

A grill 19 on which foods such as meat are placed is covered at the upper end opening of the charcoal pot 16. In addition, a ventilation opening 16b in which a lattice is arranged so that the charcoal 20 can be placed is formed at the bottom opening of the charcoal pot 16.

Ventilation holes 13d and 14a are formed in the peripheral wall of the outer kettle 13 and the peripheral wall of the inner kettle 14, respectively.
d and 14 a are connected, and a blower fan 21 is attached to the outer shuttle 13. On the other hand, the ventilation hole 15 is also provided on the peripheral wall of the water tank 15.
d is formed, and water 22 is stored below the ventilation opening 15d. The air blown by the blower fan 21 is sent to the inside of the water tank 15 through the ventilation holes 13d and 14a of the outer kettle and the inner kettle, through the ventilation port 15d of the water tank 15, and passes through the ventilation port 16b of the charcoal pot 16 to the inside of the coal pot 16. Of coal 20.

A cylindrical portion 13e is provided to protrude inward around the smoke outlet 13a on the bottom surface of the outer pot 13, and a known ceramic grease filter 23 is mounted on the cylindrical portion 13e. Further, a sieve net 24 is attached to the smoke outlet 13a downstream of the grease filter 23. Sieve net 2
4 is a knitted stainless wire with a circular cross section.
The number of stitches is 100 mesh.

A duct 25 is connected to the smoke outlet 13a to which the sieve net 24 is attached. The duct 25 is piped to the outside of the store through the inside of the floor, and a suction fan (not shown) is installed in the middle of the duct 25. Further, a thermal fuse 26 and a damper 27 are provided downstream of the sieve net.
The exhaust air volume of the duct 25 is adjusted by manually adjusting the degree of opening of the damper 27 between fully closed and fully open. When the temperature inside the duct 25 rises due to ignition of oil particles attached to the grease filter 23, the thermal fuse 26 is blown. Accordingly, the damper 27 is fully closed by the force of a spring (not shown) to close the duct 25 to prevent the flame from being sucked. Reference numeral 28 denotes a circuit board for supplying power to the blower fan 21 and adjusting the rotation speed of the blower fan 21, and is attached to the table cabin 16.

The structure of the smokeless roaster 10 according to this embodiment is as described above. The ignited charcoal 20 is put into the charcoal pot 16, the grill 19 is put on the charcoal pot 16, and the blower fan 21 is driven to drive the charcoal. The food such as meat and vegetables is placed on the grill 19 and heated and cooked while blowing air into the grill 20. The smoke generated in the cooking opening 12a is exhausted from the smoke exhaust passage 17 to the outside of the store through the duct 25 by driving a suction fan (not shown). Oil particles in the smoke are captured and removed by the grease filter 23.

If sparks are generated in the charcoal pot 16 for some reason, it is sucked into the smoke exhaust passage 17 together with the smoke.
Since the sparks are captured by the sieve net 24, it is possible to prevent the sparks from flying to the oil particles attached to the inner wall of the duct 25 and igniting. Since the sieve mesh is knitted with a stainless steel wire having a circular cross section, the pressure loss is small. Therefore, even if it is arranged in the duct, the suction force is not reduced and the exhaust is not hindered. Further, since the sieve net is arranged downstream of the grease filter, it is possible to prevent the sieve net from being clogged with oil particles.

In particular, in the smokeless roaster according to the present embodiment, a mesh having a mesh number of 100 is adopted for the number of meshes, but prior to adoption, the mesh 50, the mesh 80, the mesh 100, and the mesh 150 are used to reduce the amount of sparks. When the removal effect was visually confirmed, the mesh 5
The sieve removal rate of the 0 sieve screen was 40-50%, the mesh 80 screen 60-70%, the mesh 100 screen 90-95%, and the mesh 150 screen 99% or more. . On the other hand, when an experiment was conducted on the degree of reduction of the exhaust air volume due to the accumulation of oil in the sieve net, when the sieve net of the mesh 150 was used, the exhaust air volume was initially 5 cubic meters per minute, but after burning 1 kg of meat, It fell to 1 cubic meter, and the smoke emission capacity dropped remarkably. On the other hand, a mesh 100
The cubic meter exhaust air volume dropped to 4.6 per minute even after 10 kg of meat was baked. From the above experimental results, the mesh of the sieve mesh used for the smokeless roaster was 90-1.
If it is in the range of 10, it is presumed that a sufficient fire powder removing effect can be achieved without hindering smoke exhaustion.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a main part of a smokeless roaster according to an embodiment of the present invention.

[Explanation of symbols]

10: smokeless roaster, 11: table, 12: top plate,
12a: cooking opening, 13: outer pot, 14: inner pot, 17
... smoke passage, 23 ... grease filter, 24 ... sieve net, 25 ... duct.

Claims (3)

[Claims] 1. A smoke and exhaust gas generated from a cooking opening formed in a table is sucked into a duct and exhausted, and a grease filter provided in the duct captures the smoke and oil particles in the exhaust gas. A smokeless roaster, wherein a sieve net for catching sparks is arranged downstream of the grease filter. 2. An exhaust cooker is assembled in a cooking opening formed in a table, an inner cooker is incorporated in the outer cooker, and a smoke exhaust opening formed at the bottom of the outer cooker communicates with the cooking opening. A passage is defined by the inner kettle and the outer kettle, a duct is connected to the smoke exhaust port, a grease filter is arranged in the smoke exhaust passage or duct, and fumes and exhaust gas generated at the cooking opening are formed. A smokeless roaster in which smoke is exhausted by the grease filter and the oil particles in the exhaust gas are captured through a duct, and a sieve mesh for capturing a spark is disposed downstream of the grease filter. Features a smokeless roaster. 3. The smokeless roaster according to claim 1, wherein the number of meshes of the sieve mesh is 80 to 150 mesh.