JP3087988B2 - Stove device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking stove.

[0002]

2. Description of the Related Art In a so-called stove, a burner is circular and has a large number of flame holes around the burner, and the flame is formed in a ring shape around the burner. In the mixing pipe at the inlet of the burner section, the gas mixed with the primary air is jetted out uniformly from a number of flame holes, and burns the atmosphere around the burner as secondary air. The jet velocity from the flame hole is generally set to about 45 degrees with respect to the horizontal plane to prevent clogging of the flame hole due to spilling of cooked food and to spread the fire to the bottom of the pot. In the case of a commercial stove, it is configured to form an inner ring flame and an outer ring flame because it is necessary to increase the amount of combustion.

[0003]

[PROBLEMS TO BE SOLVED] In the above-mentioned stove, the flame temperature reaches a maximum of around 1800 ° C., and the NOx value emitted is a maximum of 120 ppm (converted value of the residual O ₂ concentration in exhaust gas to 0%).
Reach No NOx reduction measures have been implemented for such a stove.

[0004]

In order to solve the above-mentioned problems, the present invention provides a heat radiator in which a bar is formed in a ring shape.
Inner or outer peripheral surface of ring flame formed on stove
The burner is installed at substantially the same height as the upper surface of the burner so as to contact the burner . Further, the present invention provides a heat radiator in which a bar material is formed in a ring shape, and is integrally formed on the inner side and the outer side so as to be in contact with the inner peripheral surface or the outer peripheral surface of the inner ring flame and the outer ring flame formed on the stove. Burner top surface
It is characterized in that it is installed at substantially the same height as .

[0005]

When a flame is generated in the stove, the flame is absorbed by the heat radiating body to lower the temperature, thereby suppressing the generation of NOx at a high temperature.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a stove, on which a heat radiator 2 made of a bar is installed. The heat radiator 2 has a single ring shape or a double ring shape. The heat radiator 2 is placed on the stove 1 so that it can be inserted into a single ring flame 3 of the stove 1 or into a double inner ring flame 4 or outer ring 5 flame. Actually, the heat radiator 2 is installed at substantially the same height as the burner upper surface 6,
It is set at a position in contact with the inner or outer peripheral surface of the flame, that is, in the range of the flame width "L". In the figure, the heat radiator 2 is
An example of installation on the outer surface of a flame is shown. The rod of the heat radiator 2 has an appropriate thickness depending on the amount of combustion of the burner. For example, in the case of the heat radiator 2 of a round bar, the rated combustion amount 120
In the case of a stove for business use of 00 to 15000 kcal / h, about 5.0 mm is optimal, and in the case of a burner having a small rated combustion amount, the diameter of the round bar may be reduced. The material of the heat radiator 2 is made of metal (stainless steel, Kanthal, etc.) and ceramics having excellent heat resistance. In such a configuration, the flames 3, 4,
5, the flames 3, 4, and 5 become heat radiators 2
As a result, the temperature of the flame can be reduced effectively, that is, the maximum temperature of the flame can be reduced from 1800 ° C. to 1600 ° C., and as shown in FIG. 5, the amount of NOx discharged is reduced by half.

[0007]

As described above, according to the present invention, a heat radiator is placed on a stove, and is brought into contact with the inner or outer peripheral surface of a ring-shaped flame formed on the stove to lower the flame temperature and discharge NOx. In addition to having an excellent effect of significantly improving the characteristics, its installation position is approximately the same height as the upper surface of the burner.
Because it is not disturbed by Gotoku, it can be easily installed on the stove
Come, there is an advantage of the like can be mounted at a low cost to existing equipment.

[0008]

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of one embodiment of the present invention.

FIG. 2 is an explanatory diagram of another embodiment of the present invention.

FIG. 3 is an explanatory diagram of one embodiment of a heat radiator.

FIG. 4 is an explanatory view of another embodiment of the heat radiator.

FIG. 5 shows a NOx emission characteristic diagram of the present invention.

FIG. 6 is a graph showing NOx emission characteristics according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stove 2 Heat radiator 3 Single flame 4 Inner ring flame 5 Outer ring flame 6 Burner upper surface

Claims (2)

(57) [Claims] 1. A heat radiator in which a bar is formed in a ring shape,
Inner or outer peripheral surface of ring flame formed on stove
The stove device is installed at substantially the same height as the upper surface of the burner so as to make contact with the stove. 2. A heat radiator in which a bar is formed in a ring shape,
The inner and outer flames of the inner and outer flames that are formed integrally on the inner and outer sides of the stove are formed in contact with the inner and outer flames.
A stove device which is installed at substantially the same height as the upper surface of the burner so that the burner can be installed .