JPH08114308A - Burner for cooker - Google Patents

Abstract

PURPOSE: To improve the spread of flames, from sub-flames to main flames, and to improve uneven heating by a method wherein a thermocouple-storing chamber is so formed that a part of a ringed placement space between a burner head and a burner body is partitioned in recess shape, with partitions on three sides and that the peripheral side thereof is opened, and slit-flame opening parts jetting a fuel-air mixture are provided. CONSTITUTION: A thermocouple-stored chamber 6 for a thermocouple 4 and an electrode part 22 is so formed that a part of a ringed placement space 26 between a burner head 2 and a burner body facing thereto is partitioned in a recess shape, with partitions 34, 5a, 5b on three sides, and that the peripheral side thereof is opened. The partitions 34, 5a, 5b are formed on the side of the burner head 2, and the thermocouple-storing chamber 6 is formed by the partition 34 in a central direction and by the partitions 5a, 5b being on both sides of the partition 34 and facing to each other. Sub-flame openings 10 differing from main flame openings are formed on the partition 34 of the partitions 34, 5a, 5b. Clearances jetting a fuel-air mixture, i.e., slit-flame openings 7, are formed in the thermocouple-storing chamber 6, and flames at the slit-flame openings 7 are formed at the peripheral part of the thermocouple-storing chamber 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove burner, and more particularly to a stove burner provided with a thermocouple for generating an electromotive force in response to an auxiliary flame.

[0002]

2. Description of the Related Art Conventionally, a stove burner shown in FIG. 2 has been known as a stove burner. The stove burner is a mixing pipe 14 that forms a mixture flow path of fuel gas and primary air.
A burner body 3 integrally formed with a downstream annular mixture chamber 13 and an annular burner head 2 which is detachably mounted coaxially on the head of the burner body 3 (FIG. 3). reference). 3A is a rear view of the burner head 2, and FIG. 3B is a plan view of the burner body 3. The burner head 2 is provided with a large number of flame hole grooves 27 on the periphery of its back surface in the radial direction and is mounted on the burner body 3 to form a main flame hole 9 with the burner body 3.

A burner body 3 facing the burner head 2
An annular mounting space 26 is formed between and, and guides the air-fuel mixture from the annular air-fuel mixture chamber 13 to the radially formed main flame port 9 (FIG. 2). Further, a part of the annular mounting space 26 is provided on the burner head 2, and the three partition walls 34, 33a, 3
The thermocouple 4 and the thermocouple storage chamber 6 of the electrode 22 are formed by partitioning into a concave shape by 3b (shown by hatching in FIG. 3A) to open the outer peripheral side. And the three-way partition wall 34,
Of the 33a and 33b, the partition wall 34 in the central direction is provided with a flame port different from the main flame port 9, that is, a secondary flame port 10 for ignition and flame detection. On the side of the burner body 3 which is the bottom of the thermocouple storage chamber 6 (see FIG. 3B), an elliptical through hole 35 is formed.
The ignition electrode 22 and the thermocouple 4 which is a sensor of the extinguishing safety device are provided through the through hole 35.

The electromotive force generated by the thermocouple 4 is sent to the controller 16 (FIG. 2), and the controller 16 determines whether or not there is a misfire depending on whether the electromotive force value is a predetermined value or more.
Further, upstream of the gas flow path, an instrument plug 18 that is electrically connected to the controller 16 to open and close the gas flow path, and a stop valve 1
9 are provided. When the flame is extinguished due to spillage or the like, the electromotive force generated by the thermocouple 4 falls below a predetermined level, the controller 16 determines that there is a misfire, and the instrument plug 18 and the stop valve 19 are closed to shut off the gas flow path. It

[0005]

However, since the auxiliary flame 12 is formed on the partition wall 34 which is retracted toward the center of the thermocouple housing chamber 6, the auxiliary flame 12 is hidden under the burner head 2. However, there was a problem that combustion flame could not be balanced with the main flame 11 (Fig. 4). That is, there was a problem that the balance of the flame on the whole stove became non-uniform and uneven burning occurred. Further, since the partition walls 33a and 33b are provided, the auxiliary flame 12 and the main flame 11 are separated from each other, and there is a problem that it is difficult to transfer the flame from the auxiliary flame 12 to the main flame 11.

In order to solve this, for example, the auxiliary flame port 1
It is conceivable to adjust the number of 0's or adjust the size of the secondary flame port 10 to make the size of the flame on the whole stove uniform. However, in this method, the flame balance of the entire stove cannot be maintained unless the auxiliary flame 12 is made considerably large. Moreover, if the secondary flame 12 is made large, the thermocouple 4 is wrapped in this internal flame, and the thermocouple 4 is heated by the internal flame having a low flame temperature, and the electromotive force generated by the thermocouple 4 becomes small. Occurs. In particular, in the initial stage of ignition, the rise of electromotive force becomes slow and a predetermined electromotive force cannot be generated within a certain period of time, so that the misfire is erroneously determined and the fire is extinguished. Therefore, there has been a demand for an improvement measure for making the flame of the entire stove uniform and improving the transfer of heat from the auxiliary flame 12 to the main flame 11 without adversely affecting the electromotive force generated by the thermocouple 4.

An object of the present invention is to provide a stove burner which solves the above problems, improves the transfer of heat from the secondary flame 12 to the main flame 11 and improves the uneven burning.

[0008]

A stove burner according to the present invention for solving the above problems is a burner main body having an annular mixture chamber, and is detachably mounted on the head of the burner main body and has a large number of circumferential edges. A burner head that forms a main flame port by providing a flame port groove in the radial direction, and a part of an annular mounting surface formed between the burner head and the burner body is concaved by three partition walls. To form a thermocouple storage chamber with the outer peripheral side open, and a secondary flame port is provided in the partition wall in the center direction of the partition walls, and a secondary flame from the secondary flame port is provided in the thermocouple storage chamber. In a stove burner provided with a thermocouple for generating an electromotive force, a slit flame port for ejecting air-fuel mixture is provided on opposing partition walls of the concave partition walls forming the thermocouple storage chamber. The main point is that.

[0009]

In the stove burner of the present invention having the above-described structure, the slit flame mouths provided on the partition walls on both sides facing each other eject the mixture to the thermocouple housing chamber side to form a flame. Therefore,
Maintains the flame balance of the entire stove to prevent uneven burning and improve the transfer of heat from the secondary flame to the main flame. That is, by providing the slit flame openings on the partition walls on both sides of the thermocouple storage chamber that are partitioned in a concave shape, the flame is formed integrally with the main flame in the thermocouple storage chamber where the main flame is not formed. Further, the auxiliary flame directly heats the thermocouple provided in the thermocouple storage chamber. Therefore, since the flame is formed on the thermocouple housing chamber side, the flame balance of the entire stove is maintained. Further, since the size of the secondary flame can be maintained as it is, there is no adverse effect that the thermocouple is covered with the inner flame having a low flame temperature. Further, since a flame is formed in the slit flame openings provided on the partition walls on both sides facing each other, the flame between the auxiliary flame formed on the partition wall in the central direction and the main flame adjacent to the thermocouple storage chamber is formed. Smooth the transfer.

[0010]

EXAMPLES In order to further clarify the constitution and operation of the present invention described above, preferred examples of the stove burner of the present invention will be described below. The cooking stove burner of the present embodiment is characterized by the thermocouple storage chamber, and the basic structure of the cooking stove burner is the same as that of the conventional example, and thus redundant description will be omitted.

As shown in FIG. 1, the thermocouple 4 and the electrode 2
The thermocouple storage chamber 6 of No. 2 is formed by partitioning a part of the annular mounting space 26 between the burner head 2 and the burner body 3 facing each other in a concave shape by the three-way partition walls 34, 5a, 5b, and opening the outer peripheral side. To be done. The three partition walls 34, 5a, 5b are provided on the burner head 2 side, and the partition wall 34 in the central direction and the partition walls 5a, 5b on both sides facing each other form a thermocouple storage chamber 6. Of the three partition walls, the partition wall 34 in the central direction is provided with a flame port different from the main flame port 9, that is, an auxiliary flame port 10 for ignition and flame detection. Further, a step 8 is provided in the middle of the contact surfaces of the partition walls 5a, 5b on both sides facing the burner body 3, and the portion from the step 8 to the outer circumference is made lower by 0.6 mm than the other portions. When the burner head 2 is placed on the burner main body 3, this lowered portion forms a gap for ejecting the air-fuel mixture into the thermocouple housing chamber 6, that is, a slit flame port 7. The flame formed in the slit flame port 7 is formed in a portion near the outer circumference of the thermocouple housing chamber 6 and toward the inside of the thermocouple housing chamber 6.

Therefore, in the portion of the thermocouple housing chamber 6 where the main flame 11 is not formed, a flame is formed integrally with the main flame 11 formed adjacent to the thermocouple housing chamber 6, so that the entire stove It evenly balances the flame and reduces uneven burning on the food. Further, since a flame is formed in a portion close to the outer circumference of the thermocouple housing chamber 6, the thermocouple 4 provided in the thermocouple housing chamber 6 is wrapped with an internal flame having a low flame temperature to lower the electromotive force. Such a bad effect does not occur. Therefore,
Even in the initial stage of ignition, there is no possibility that a misfire is mistakenly determined and the fire is extinguished. Further, since the flame formed in the slit flame port 7 is formed by being connected to the main flame 11 formed adjacent to the thermocouple housing chamber 6 and is formed toward the inside of the thermocouple housing chamber 6, The flame transfer from the secondary flame 12 formed on the partition wall 34 toward the center of the storage chamber 6 to the main flame 11 is made smooth.

The embodiment of the present invention has been described above.
The present invention is not limited to these examples, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention. For example, the width (gap in the height direction) of the slit flame port 7 is not limited to 0.6 mm, and the length is not limited to the embodiment shown in FIG. 1, and the size of the burner head and the thermocouple storage chamber is not limited. Now, depending on the amount of air-fuel mixture, it is properly determined in consideration of the flame balance of the whole stove. Further, the width of the slit flame mouth 7 is not limited to the same width over the portion extending from the step 8 to the outer periphery, and the flame mouth width is reduced in the portion close to the outer periphery to reduce the flame, and the portion far from the outer periphery (in the step 8). In the near portion), the width of the flame opening may be increased to form a tapered flame opening that forms a large flame. By appropriately adjusting the degree of taper, the portion of the thermocouple housing chamber 6 where the main flame 11 is not formed may be further reduced, and the balance of the flame size of the entire stove may be further finely adjusted. In addition, the extinguishing safety device is a safety device that manually opens the magnet type safety valve connected in series with the thermocouple 4 and closes the magnet safety valve and closes the gas flow passage when the electromotive force falls below a predetermined level. It may be a device.

[0014]

As described above in detail, according to the stove burner of the present invention, not only the original characteristic of the heating cooker such as the uneven burning is improved but also the fire transfer performance is improved. It has the excellent effect of

[Brief description of drawings]

FIG. 1 is a schematic view of a thermocouple storage chamber according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a stove burner.

FIG. 3 is a plan view showing the shapes of mounting surfaces of a burner head and a burner body according to a conventional stove burner.

FIG. 4 is a schematic view of a conventional thermocouple storage chamber.

[Explanation of symbols]

 2 Burner head 3 Burner body 4 Thermocouple 5a Partition wall 5b Partition wall 6 Thermocouple storage chamber 7 Slit flame port 9 Main flame port 10 Secondary flame port 11 Primary flame 12 Secondary flame

Claims (1)

[Claims] 1. A burner body having an annular mixture chamber, and a burner head which is detachably mounted on the head of the burner body and has a large number of flame hole grooves radially formed on its periphery to form a main flame hole. And a part of an annular mounting surface formed between the burner head and the burner body is divided into concave portions by three-sided partition walls to form a thermocouple storage chamber having an open outer peripheral side, and In a stove burner provided with a secondary flame port in the partition wall in the central direction of the partition wall, and a thermocouple for generating an electromotive force in the thermocouple storage chamber facing the secondary flame from the secondary flame port, A stove burner characterized in that slit flame outlets for ejecting air-fuel mixture are provided on partition walls on opposite sides of the concave partition walls forming the thermocouple storage chamber.