JPH06201109A - Oven device - Google Patents

Abstract

PURPOSE:To provide an oven device capable of embodying a low-NOx combustion. CONSTITUTION:Inside and outside heat radiating bodies 2, constituted annularly of a rod member, are formed integrally in double and are installed on an oven 1 so as to be able to insert the same body 2 into an inner annular flame 4 and an outer annular flame 5, which are formed in the oven 1. When the flames are blazed up under such a condition, the temperatures of the flames are reduced by the heat absorption of the heat radiating body 2 whereby the production of NOx at a high temperature can be restrained.

Description

Detailed Description of the Invention

[0001]

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

[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 a flame is formed in a ring shape around the burner. In the mixing pipe at the inlet of the burner, the gas mixed with the primary air is uniformly ejected from a large number of flame holes and burns the atmosphere around the burner as secondary air. The ejection speed from the flame hole is generally set to about 45 degrees with respect to the horizontal plane so as to prevent the flame hole from being clogged due to spillage of the cooked product 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 stove, the flame temperature reaches a maximum of about 1800 ° C, and the NOx value discharged is a maximum of 120 ppm (exhaust gas residual O ₂ concentration 0% conversion value).
Reach NOx reduction measures have not been implemented for such stoves.

[0004]

[Means for Solving the Problems] In order to solve the above problems,
The present invention is characterized in that a heat-radiating body having a rod-shaped ring is installed on a stove so that it can be inserted into a ring-shaped flame formed on the stove. Also,
According to the present invention, a heat-radiating body having a rod-like ring shape is integrally formed on the inside and the outside so as to be inserted into the inner ring flame and the outer ring flame formed on the stove. It is characterized by that.

[0005]

When a flame is generated on the stove, the heat is absorbed by the heat radiator to lower the temperature and suppress the generation of NOx at a high temperature.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 is a stove on which a heat radiator 2 made of a bar is placed. The heat radiator 2 may be a single ring or a double ring. The heat radiator 2 is installed on the stove 1 so that it can be inserted into the single ring-shaped flame 3 of the stove 1 or the double inner ring flame 4 or the outer ring 5 flame. Actually, the heat radiator 2 is installed at substantially the same height as the burner upper surface 6,
It is installed at a position where it contacts the inner or outer peripheral surface of the flame, that is, within the range of the flame width "L". In the figure, the thermal radiator 2 is
An example of installation on the outer surface of the flame is shown. The rod material of the heat radiator 2 has an appropriate thickness depending on the burner burn amount. For example, in the case of the round-shaped heat radiator 2, the rated combustion amount 120
In the case of a commercial stove with a capacity of 00 to 15000 kcal / h, φ5.0 mm is optimal, and in the case of a burner with 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.) or ceramics having excellent heat resistance. In this structure, the flames 3, 4,
5 is generated, the flames 3, 4, and 5 are generated by the heat radiator 2
The effective temperature of the flame can be lowered by lowering the temperature of the flame, that is, the maximum temperature of the flame can be reduced from 1800 ° C. to 1600 ° C., and the amount of NOx discharged can be reduced by half as shown in FIG.

[0007]

INDUSTRIAL APPLICABILITY As described above, the present invention has an excellent effect that the heat radiator is installed on the stove, the flame temperature is lowered, and the NO _X emission characteristics are remarkably improved. Since it can be easily installed, it has an advantage that it can be attached to existing equipment at low cost.

[0008]

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an 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 an example 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.

[Explanation of symbols]

 1 stove 2 thermal radiator 3 single flame 4 inner ring flame 5 outer ring flame 6 burner top surface

[Procedure amendment]

[Submission date] December 21, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

FIG. 6 is a NOx emission characteristic diagram of the present invention.

Claims (2)

[Claims] 1. A heat radiating body in which a rod is formed in a ring shape,
A stove device which is installed on a stove so that it can be inserted into a ring-shaped flame formed on the stove. 2. A heat radiator having a rod-like ring shape is integrally formed on the inside and the outside so as to be inserted into the inner ring flame and the outer ring flame formed on the stove. Stove device to do.