JP3965002B2 - Gas stove - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas stove having a stove burner for cooking.
[0002]
[Prior art]
Conventionally, in this type of gas stove, as shown in FIGS. 4 and 6, a burner 14 is disposed at the center of an opening provided in the top plate 12, and a juice receiving tray 18 is placed around the burner 14. The cooking pan P is placed on the Gotoku 20 provided above the burner 14.
The five virtues 20 are integrally configured by a plurality of five virtue claws 20b on which the cooking pan P is placed and a five virtue ring 20a which is a base of the respective five virtue claws 20b.
[0003]
The burner 14 includes a burner body 15 having an annular mixture chamber, and a burner head 36 that is placed on the burner body 15 to form a number of flame openings on the outer periphery.
As shown in FIG. 5, flame-hole grooves 36a and narrow thin weirs 36d (partition walls) are alternately formed at substantially equal intervals on the outer periphery of the back surface of the burner head 36. Therefore, by placing the burner head 36 on the burner body 15, the flame opening groove 36 a communicates with the gas mixture chamber of the burner body 15 and functions as a flame opening.
[0004]
[Problems to be solved by the invention]
However, in such a burner 14, since the flames of adjacent flame outlets are connected to form a flame train in a ring shape, when the cooking pan P is heated, the combustion exhaust is surrounded by the flame train and the cooking pan P. It accumulates in the space, the discharge does not go smoothly, and eventually overflows along the bottom of the pan (exhaust passage in the figure). As a result, a gap was formed between the flame and the cooking pan P, heat exchange was not performed well, and the heating efficiency to the cooking pan P was poor.
In particular, in the case of using the five virtues where the cooking pan P is placed at a low position to improve the heating efficiency, it is difficult to discharge such combustion exhaust, and in fact, the heating efficiency is not improved.
The gas stove of the present invention aims to solve the above problems and increase the heating efficiency of the cooking pan.
[0005]
[Means for Solving the Problems]
The gas stove according to claim 1 of the present invention for solving the above-mentioned problems is
In a gas stove equipped with a burner head in which a large number of flame outlets are arranged radially and alternately at a predetermined pitch on the outer periphery,
The burner head is provided with at least one partition wall that is expanded to a width of at least twice the arrangement pitch of the flame openings as a flameless mouth part for exhaust venting,
The gist of the invention is to discharge the combustion exhaust generated by the flame at the flame outlet from the flame non-formation region by the exhaust ventless flame opening.
[0006]
The gas stove according to claim 2 is:
In the gas stove with the five virtues that are arranged to stand on the Gotoku ring with the Gotoku claws that are provided so as to be located above the flame mouth and place the cooking pan,
The gist of the invention is that the cooking pot mounting surface of the five virtue claws is formed to be inclined downward toward the center of the burner head.
[0007]
The gas stove according to claim 1 of the present invention having the above-described configuration is provided with a flameless opening portion for exhaust venting, and the combustion exhaust generated by the flame formed by the flamelet groove is not burned by the flameless opening portion for exhaust venting. Since it discharges from the formation area, most of the combustion exhaust does not pass between the flame and the cooking pan, and the flame approaches the cooking pan. As a result, the heating efficiency to the cooking pan can be improved.
[0008]
In the gas stove according to claim 2, since the virtuosity claw is inclined downward toward the center of the burner head, the smaller the cooking pot, the lower the mounting surface and the closer to the burner. That is, the smaller the cooking pot with lower heating efficiency, the closer the bottom of the pot is to the burner.
Moreover, even if the bottom of the pan approaches the burner, the combustion exhaust is discharged from the non-flame area due to the exhaust-free flame opening, so most of the combustion exhaust does not pass between the flame and the cooking pan, Get closer to the cooking pan. As a result, the heating efficiency to the small cooking pot can be improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the gas stove according to the present invention will be described below.
In addition, about the point which overlaps with a prior art example, the same code | symbol is attached | subjected and description is abbreviate | omitted.
FIG. 2 is a cross-sectional view of the gas stove as an embodiment as seen from the side.
[0010]
The burner 14 includes a burner body 15 having an annular mixture chamber that mixes fuel gas and primary air, and a burner head 16 mounted in the annular mixture chamber of the burner body 15.
As shown in FIG. 1, the burner head 16 has a large number of flaming grooves 16 a formed radially at substantially equal intervals on the outer peripheral portion, and thin weirs 16 d that partition the flaming grooves 16 a. Therefore, by placing on the burner body 15, the flame opening groove 16 a communicates with the gas mixture chamber of the burner body 15 and functions as a flame opening. Hereinafter, this flame port is referred to as a flame port 16a by using the same reference numerals as those of the flame port groove 16a.
In the middle of this flame port arrangement, there is a thick weir 16e serving as an exhaustless flameless port having a larger dimension in the circumferential direction than the thin weir 16d, and an auxiliary combustion chamber for housing an ignition electrode and a thermocouple (not shown). The small flame opening groove 16f is formed.
The thick weirs 16e are respectively provided below the five virtue claws 20b, which will be described later, and have a width that is at least twice the arrangement pitch of the flame port grooves 16a (the distance between the center lines of the flame port grooves 16a).
Further, the small flame opening groove 16f forms a flame in the vicinity of the misfire detection thermocouple, and therefore, is different from the exhaustless flameless opening.
Reference numeral 16b denotes an internal flame opening opened on the upper surface of the burner head 16, and reference numeral 16c denotes an intermediate opening which opens to the center and serves as an inflow path for secondary air.
[0011]
The five virtues 20 are provided in the upper periphery of the flame outlet 16 a of the burner head 16 and cover the outer peripheral edge of the juice receiving tray 18. The five virtues 20 are integrally constituted by a plurality of L-shaped five virgin claws 20b on which the cooking pan P is placed, and a virtuosity ring 20a serving as a base of each virtuosity claw 20b.
As shown in FIG. 3B, the five virtue claws 20 b are formed so as to be inclined so that the mounting surface of the cooking pan P is smoothly lowered toward the center of the burner head 16.
[0012]
In the table stove 10 described above, the air around the base of the flame is usually engulfed in the ejection direction by the blast output of the flame, but if the distance between the flame openings is narrow, the amount of air engulfed at the base between the adjacent flames is small. There is a shortage of vortexes that try to entrain a portion of the flame around the base, and adjacent flames stick together.
Therefore, although flames at the flame port 16a adjacent to the thin weir 16d are connected, no flame is formed at the thick weir 16e (exhaust vent no-flame port portion) because the distance between the adjacent left and right flame ports 16a is large. . That is, the flame train is interrupted and does not form a ring. Hereinafter, a region where the flame train by the thick weir 16e is interrupted is referred to as a flame-unformed region.
[0013]
The combustion exhaust of the burner 14 is blocked by the flame connected in the vicinity of the thin weir 16d and temporarily accumulates on the burner 14, but is smoothly discharged along the upper five virtue claws 20b from the flame non-formation region by the thick weir 16e ( (Broken arrow in the figure).
Thus, the combustion exhaust is smoothly discharged from the flame non-formation region by the thick weir 16e, and the amount of the combustion exhaust passing between the cooking pan P and the flame is reduced. As a result, the flame can approach the cooking pot P and improve the heating efficiency of the cooking pot P by 2 to 3% over the conventional product.
In addition, since the thick weir 16e is disposed below the five virtue claws 20b, the uniform distribution of the flame is not significantly affected.
By the way, also in the conventional burner, in order to prevent the virtuosity claw 20b from being blown by the flame and preventing the durability from being lowered, the interval between the flaming grooves 36a is increased below the virtuosity claw 20b (which is wider than the thin weir 36d). A flameless mouth portion 36g (which becomes a wide weir) was provided. However, the width was not sufficient to exhaust combustion exhaust well.
[0014]
In the gas stove according to the present embodiment, when the cooking pot P having a small diameter is used, the mounting position of the cooking pot P is lowered by the inclined five virtue claws 20b, and the flame approaches the cooking pot P, so that the heating efficiency is improved. To do.
At this time, the combustion exhaust tends to further accumulate on the burner 14 and the combustion performance may be degraded. Since there is no five virtue ring 20a, the secondary air can easily come into contact with the flame, the combustion performance is maintained well, and there is no problem.
Therefore, the smaller cooking pot P can be closer to the burner head 16, and the effect of improving the heating efficiency by the thick weir 16e is even greater.
[0015]
As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment at all, Of course, it can implement in a various aspect in the range which does not deviate from the meaning of this invention.
For example, the virtuosity claw 20b may be inclined stepwise as shown in FIG. 3A to prevent the cooking pan P from slipping on the virtuosity claw 20b.
Further, the thick weir 16e may be provided regardless of the position of the five virtue claws 20b.
Alternatively, only one thick weir 16e may be provided, and the cooking pan P may be heated uniformly by forming a flame almost entirely.
In addition, the arrangement pitch of the craters may not be uniform and there may be a large portion in the middle. In this case, the width of the thick weir 16e may be formed more than twice the small arrangement pitch that is the basis of the crater. Good.
Moreover, the flameless opening part for exhaust_gas | exhaustion is good also as a flame opening for fire transfer of the grade which can form an exhaust passage in the upper part, so that a flame does not reach the cooking pan P.
[0016]
【The invention's effect】
As described in detail above, according to the gas stove according to claim 1 of the present invention, by providing a flameless mouth part for exhaust venting, the exhaust gas can be smoothly discharged to bring the flame closer to the cooking pan. The heating efficiency to the cooking pan can be improved.
[0017]
Furthermore, according to the gas cooker according to claim 2 of the present invention, since the flameless mouth part for exhausting air is provided, a cooking pot with a small diameter is placed on the inclined virtues and brought close to the burner head. Even in the case, the heating efficiency to the cooking pan can be improved while maintaining good combustion performance.
[Brief description of the drawings]
FIG. 1 is a schematic view of a back surface of a burner head as one embodiment.
FIG. 2 is a cross-sectional view of a stove as one embodiment as viewed from the side.
FIG. 3 is a cross-sectional view of the five virtues as one embodiment viewed from the side.
FIG. 4 is an external view of a table stove.
FIG. 5 is a schematic view of the back surface of a burner head as a conventional example.
FIG. 6 is a sectional view of a conventional stove as seen from the side.
[Explanation of symbols]
14 ... Burner, 16, 36 ... Burner head,
16a ... Flame opening groove, 16d ... Thin weir, 16e ... Thick weir, 16f ... Subcombustion chamber,
18 ... Juice tray, 20 ... Gotoku, P ... Cooking pan, A, B, C ... Secondary air.

Claims (2)

In a gas stove equipped with a burner head in which a large number of flame outlets are arranged radially and alternately at a predetermined pitch on the outer periphery,
The burner head is provided with at least one partition wall that is expanded to a width of at least twice the arrangement pitch of the flame openings as a flameless mouth part for exhaust venting,
A gas stove characterized in that combustion exhaust generated by a flame at the flame outlet is discharged from a flame non-formation region by the exhaust vent no-flame mouth portion. In the gas stove with the five virtues that are arranged to stand on the Gotoku ring with the Gotoku claws that are provided so as to be located above the flame mouth and place the cooking pan,
The gas stove according to claim 1, wherein the cooking pot mounting surface of the five virtue claws is formed to be inclined downward toward the center of the burner head.

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