JPS6358011A - Gas cooking stove - Google Patents

Abstract

PURPOSE:To improve fire transfer performance by installing an air shielding valve at the lower part of a fire transfer flame hole in the gap between the internal and external burners. CONSTITUTION:At the periphery of an external burner 3 flame holes 1a are placed and at the center an opening 2 is formed and an internal burner 4 is installed at the opening 2. At the periphery of the burner 4 flame holes 1b are placed. A slit-shaped fire transfer flame hole 5 interconnecting from the opening 2 of the external burner 3 to the flame holes 1a is installed and an air shielding valve 6 is installed at the location facing the hole 5 in the gap between the internal burner 4 and the external burner. The valve 6 hinders a rising air stream generated by the gas combustion in the burner 4 and in the gap between the internal burner 4 and the external burner 3 and flames spouted from the flame holes 1b of the burner 4 are not driven out upwards and inversely, the valve 6 becomes a guide valve for the flames which are transferred securely to the hole 5 of the burner 3 and fire transfer performance from the internal burner to the external burner is insured.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the structure of a burner section of a gas stove having a pair of inner and outer burners.

BACKGROUND ART A conventional gas stove having a pair of inner and outer burners has an outer burner 3 having a burner port 1a on the outer periphery and an opening 2 in the center, and a burner port 1b on the outer periphery, as shown in FIG. and an inner burner 4 facing the opening 2 of the outer burner 3, and the outer burner 3 is provided with a slit flame transfer flame port 6 connected from the opening 2 to the flame port 1a, and the ignition is carried out. The structure is configured to perform pilot flame injection (not shown), and a thermocouple for detecting the flame is not installed.

Problems to be Solved by the Invention However, in such a structure of the burner part, after combustion has been completed to a certain extent, an upward air current is generated in the gap between the inner burner 4 and the outer burner 3, and one flame port 2a of the inner burner 4 There was a problem in that the flame transfer performance from the outer burner 3 to the flame port 5 was hindered.

The present invention solves these conventional problems and provides a gas stove with good flame transfer performance.

Means for Solving Point II The gas stove of the present invention is provided with an air shutoff valve below the flame transfer port at a portion h; between the inner burner and the outer burner.

Function: The gas stove of the present invention uses an air shield valve to suppress the rising air current generated in the gap between the inner burner and the outer burner, and the air shield valve moves from the flame port of the inner burner to the flame transfer port of the outer burner. This serves as a guide valve to ensure flame transfer from the inner burner to the outer burner.

EXAMPLE Hereinafter, a gas stove according to an example of the present invention will be described with reference to the drawings. As shown in FIG. 1, the outer burner 3 has a burner port 1a on its outer periphery, an opening 2 in the center, and an inner burner 4 facing into the opening 2.

The inner burner 4 has a flame port 1b on its outer periphery. Further, a slit-shaped flame transfer flame port 6 is provided which communicates with the flame port 1a from the opening 2 of the outer burner 3, and an air shutoff valve 6 is provided in the gap between the flame transfer flame port 5 and the inner burner 3 at a position opposite to the flame transfer flame port 5. The configuration is as follows.

In this way, the air blocking valve 6 blocks the rising airflow generated in the gap between the inner burner 4 and the outer burner 3 as the gas burns in the inner burner 4. The flame ejected from the flame port 1b is not driven upwards, and on the contrary, the air barrier valve 6 serves as a guide valve for the flame and has the effect of reliably guiding the flame to the flame transfer flame port 5 of the external burner 3.

Note that the gap between the inner burner 4 and the outer burner 3 is a gap necessary to take in the air necessary for gas combustion in the inner burner 4, and if this is completely shielded, the inner burner 4 will cause incomplete combustion. It cannot be done for the sake of.

Therefore, the width and height position of the air valve 6 should be determined by experiment.

In addition, as shown in Fig. 2, by configuring a spark plug 7 or a thermocouple 8 for detecting flame to protrude from the air valve 6, the state of the flame at the ignition section or flame detection section is stabilized. Therefore, it has the effect of obtaining good ignition performance or flame detection performance.

In the above embodiment, the fire transfer flame port 5 was explained as being at one location, but it goes without saying that it may be provided at several locations.

Effects of the Invention As described above, the gas stove of the present invention has an air barrier valve located in the gap between the inner burner and the outer burner at a position facing the flame transfer port to block the upper air flow accompanying combustion. This simple configuration has the effect of ensuring flame transfer performance from the inner burner to the outer burner without forcing the flame of the inner burner upwards.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a gas stove that is an embodiment of the present invention, Figure 2 is a perspective view of an embodiment of the same, and Figure 3 is a perspective view of a conventional gas stove. be. 1d, 1b...flame mouth, 2...opening, 3.
...Outer burner, 4...Inner burner, 5...
・Fire transfer vent, 6...Air shield valve.

Claims (2)

[Claims] (1) An outer burner having a flame port on the outer periphery and an opening in the center;
an inner burner having a flame port on the outer periphery and facing the center opening of the outer burner, and the outer burner is provided with one or several flame transfer ports that extend from the center opening to the outer peripheral burner port. . A gas stove comprising an air shield valve provided below a portion of the outer burner corresponding to a flame transfer port in a gap between the outer burner and the inner burner. (2) The gas heater according to claim 1, further comprising an ignition plug for igniting the internal burner or a thermocouple for detecting the flame of the internal burner, and the ignition plug or thermocouple is provided in an air shield valve. reactor.