JPH0423486Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cooking device for cooking foods such as meat and vegetables.

(Prior art and its problems) As shown in FIG. 4, for example, a conventional heating cooker includes a burner b inside a container a and a dome-shaped radiator c above it. There is one in which the food e above is heated and cooked by the convection of the combustion gas d generated by the combustion of b and the radiant heat from the radiator c.

In such conventional heating cookers, as mentioned above, since the food e is heated by convection of the combustion gas d, there are problems such as the taste deteriorates due to the influence of the combustion water and a large amount of smoke is generated. . moreover,
From the perspective of energy conservation, there is also the problem that most of the large amount of thermal energy contained in the combustion gas is not effectively reused, but rather diffuses into the atmosphere and is wasted.

The present invention aims to solve such problems.

(Means for solving the problems) The configuration of the present invention is shown in FIGS. 1 to 3 corresponding to embodiments.
To explain based on the figure, heating cooker 1 of the present invention
is a container body 3 having upper and lower openings 2, 2a, 2b.
A radiant plate 5 with vertically communicating porous holes 4 formed thereon is extended horizontally or diagonally with the center 6 of the vessel 3 opened, and a burner 7 is provided above the radiant plate 5. The lower opening 2b of the vessel body 3 is
It is connected to the forced smoke exhaust system 9, which has an oil pan 8 corresponding to the lower opening 2b, and is placed at a suitable place in the exhaust gas line 10 leading from the inside of the vessel body 3 to the forced smoke exhaust system 9.
Heat exchanger 13 between combustion gas 11 passing through exhaust gas line 10 and combustion air 12 supplied to burner 7
It has been established.

(Function) To explain the function of the present invention, in the operating state, the exhaust fan 14 of the forced smoke exhaust system 9 directs the air inside the vessel body 3 through the exhaust gas line 10 to the lower opening 2b. Continue to attract more.

In this state, when the burner 7 provided above the radiant plate 5 is put into a combustion state, the radiant plate 5 is heated by the radiant heat from the flame and the combustion gas 11 flowing downward due to the suction force of the forced smoke exhaust system 9. Far-infrared rays are emitted, and the food 15 can be heated and cooked by irradiation with the far-infrared rays. Food 15 with far infrared rays
When heated, a cooking effect similar to that of charcoal grilling can be obtained, and since the combustion gas 11 is sucked into the forced smoke exhaust system 9, the influence on the food 15 is reduced, and the food 15 can be cooked with good taste. I can do it.

Furthermore, the combustion gas 1 sucked into the forced smoke exhaust system 9
1 and smoke can be exhausted to the outside through a hood (not shown) or the like, so it is possible to prevent the smoke from dispersing into the room.

Moreover, in the present invention, the combustion gas 11 passing through the exhaust gas system 10 and the blower fan 1 are placed in the vicinity of the exhaust gas system 10, for example, in the vicinity of the lower opening 2b.
Since the heat exchanger 13 with the combustion air 12 supplied to the burner 7 via the air pipe 17 is provided in accordance with 6, the thermal energy contained in the combustion gas 11 can be reused for preheating the combustion air 12. Therefore, combustion efficiency can be increased and energy consumption can be reduced.

(Embodiment) The heat exchanger 13 may be of any suitable type as long as it can efficiently recover the thermal energy of the combustion gas 11 into the combustion air 12, and may have the configuration shown in FIGS. 2a and 2b, for example. The configuration shown in FIG. 2a is the lower opening 2b of the container body 3.
A box-shaped heat exchanger 13 main body having a through hole 18 formed in a region 20 corresponding to the area 20 and using the through hole 18 as a constituent part of the exhaust gas line 10, and a fan 19 arranged in a row inside the through hole 18. The heat exchanger 13 consists of
An air pipe 17 is provided in communication with the air pipe 17. In such a configuration, the combustion air 12 is supplied to the blower fan 1.
6, the air pipe 17 is passed through the heat exchanger 1.
3, the thermal energy of the combustion gas 11 flowing into the main body and passing through the through hole 18, which is the exhaust gas line 10, is recovered via the fan 19, and then passed through the air pipe 12 toward the burner 7. It is supplied to the burner 7.

On the other hand, in the configuration shown in FIG. 2b, the box-shaped heat exchanger 13
A plurality of through holes 18 are provided in a region 20 of the main body corresponding to the lower opening 2b of the container body 3, and the plurality of through holes 18 are used as constituent parts of the exhaust gas system path 10, as shown in FIG. 2a. Similarly to the configuration, the combustion air 12
When the combustion gas 11 passes through the through hole 18, thermal energy of the combustion gas 11 is recovered by heat conduction on the side wall of the through hole 18.

If the dripping oil from the food 15 drips on it, it will burn and generate a large amount of smoke, so the radiant plate 5 is opened at the center 6 of the container 3 and placed on the inner wall of the container 3 in a horizontal or diagonal direction. If the configuration is such that the oil drips from the food product 15 passes through the center 6 and falls, it can be collected in the oil receiver 8 below.

Further, the porous holes 4 of the radiation plate 5 promote the downward flow of the combustion gas 11, and increase the contact area of the radiation plate 5 with the combustion gas 11.
The shape and number of the pieces may be configured to satisfy the contradictory requirements of circulation of the combustion gas 11 and heating efficiency, for example, a honeycomb shape as shown in FIG. 3. It is appropriate to provide a structure in which an appropriate number of holes are provided.

Incidentally, if the forced smoke exhaust system 9 is provided with a smoke treatment device 21 composed of a honeycomb catalyst, a grease filter, etc., it is possible to further reduce smoke.

(Effects of the invention) As described above, the heating cooker of the invention can cook food with good taste, generate less smoke during cooking, and suppress its release to the surroundings. Moreover, since the thermal energy contained in the combustion gas can be reused to preheat the combustion air, there is an effect of reducing energy consumption.

[Brief explanation of drawings]

1 to 3 correspond to an embodiment of the present invention, in which FIG. 1 is an overall system diagram, FIGS. 2a and b are perspective views showing an embodiment of the heat exchanger 13, and FIG. 5 is a perspective view of a radiation plate 5. FIG. FIG. 4 is a schematic cross-sectional view of a conventional example. Code, 1...Heating cooker, 2, 2a, 2b...
Opening, 3... Vessel, 4... Porous, 5... Radiation plate, 6... Center, 7... Burner, 8... Oil receiver,
9... Forced smoke exhaust system, 10... Exhaust gas system path, 11
... Combustion gas, 12 ... Combustion air, 13 ... Heat exchanger, 14 ... Exhaust fan, 15 ... Food, 1
6...Blower fan, 17...Air piping, 18...
Through hole, 19...Fan, 20...A region corresponding to the lower opening 2b of the vessel body 3, 21...Smoke processing device.

Claims (1)

[Scope of utility model registration request] A radiating plate with vertically communicating porous holes is extended horizontally or diagonally from the inner wall of the vessel having openings at the top and bottom, with the center of the vessel open, and a burner is provided above the radiating plate. Further, in a heating cooker connected to a forced smoke exhaust system having an oil pan configured in correspondence with the lower opening of the vessel, the lower opening of the vessel is configured to collect exhaust gas from the inside of the vessel to the forced smoke exhaust system. A cooking device characterized in that a heat exchanger between combustion gas passing through the exhaust gas system and combustion air supplied to the burner is provided at an appropriate location in the system.