JP3198021B2 - Cooker burner - Google Patents

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 that generates an electromotive force in response to a secondary flame.

[0002]

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

[0003] Burner body 3 facing burner head 2
An annular mounting space 26 is formed between the first and second openings, and the mixture from the annular mixture chamber 13 is guided to the radially formed main flame port 9 (FIG. 2). In addition, a part of the annular mounting space 26 is provided with three-sided partition walls 34, 33a, 3
The thermocouple 4 and the thermocouple storage chamber 6 for the electrode 22 are formed in a concave shape by 3b (shown by hatching in FIG. 3A) and the outer peripheral side is opened. And the three-way partition wall 34,
Among the 33a and 33b, a flame port different from the main flame port 9, that is, an auxiliary flame port 10 for ignition and flame detection is provided on the partition wall 34 in the center direction. On the burner main body 3 side, which is the bottom of the thermocouple storage chamber 6 (see FIG. 3B), an elliptical through hole 35 is provided.
The ignition electrode 22 and the thermocouple 4 which is a sensor of the extinguishing safety device are inserted 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 a misfire has occurred based on whether or not the electromotive force value is equal to or greater than a predetermined value.
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,
9 are provided. When the flame is extinguished due to a spill or the like, the generated electromotive force of the thermocouple 4 becomes equal to or lower than a predetermined level, the controller 16 determines that a misfire has occurred, closes the appliance plug 18 and the shutoff valve 19, and shuts off the gas flow path. You.

[0005]

However, since the secondary flame 12 is formed on the partition wall 34 receding toward the center of the thermocouple storage chamber 6, the secondary flame 12 is hidden under the burner head 2. However, there is a problem that the combustion flame cannot be balanced with the main flame 11 (FIG. 4). In other words, there is a problem in that the balance of the flame of the whole stove becomes uneven, causing uneven burning. Furthermore, since the partition walls 33a and 33b are provided, the secondary flame 12 and the main flame 11 are separated from each other, and there is a problem that it is difficult for the secondary flame 12 to ignite to the main flame 11.

In order to solve this problem, for example,
A method of adjusting the number of zeros or adjusting the size of the auxiliary flame port 10 to make the flame size of the entire stove uniform can be considered. However, in this method, unless the auxiliary flame 12 is considerably increased, the flame balance of the entire stove cannot be maintained. Moreover, when the size of the auxiliary flame 12 is increased, the thermocouple 4 is surrounded by the inner flame, and the thermocouple 4 is heated by the inner flame having a low flame temperature, and the generated electromotive force of the thermocouple 4 is reduced. Occurs. In particular, in the initial stage of ignition, the rise of the electromotive force becomes slow, and the predetermined electromotive force cannot be generated within a certain period of time. Therefore, there has been a demand for an improved measure for making the flame of the entire stove uniform and improving the fire 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-mentioned problems, improves the transfer of fire from the secondary flame 12 to the main flame 11, and improves the unevenness of burning.

[0008]

According to a first aspect of the present invention, there is provided a stove burner having an annular air-fuel mixture chamber, and a burner body detachably mounted on a head of the burner body. A burner head forming a main flame port by providing a flame groove in a radial direction, and a part of an annular mounting surface formed between the burner head and the burner main body is concavely formed by a three-way partition wall. Forming a thermocouple storage chamber whose outer peripheral side is opened by partitioning, a secondary flame port is provided in a partition wall in the center direction of the partition wall, and a secondary flame from the secondary flame port is provided in the thermocouple storage chamber. In a stove burner provided with a thermocouple that generates an electromotive force, a slit flame port portion through which an air-fuel mixture is blown out is provided on opposing ones of the concave partition walls that form the thermocouple storage chamber. The gist is that

[0009]

According to the above-described stove burner of the present invention, the slit flame openings provided on the opposing partition walls inject air-fuel mixture toward the thermocouple storage chamber to form a flame. Therefore,
Prevents uneven burning by maintaining the balance of the flame of the entire stove and improves the transfer of fire from the secondary flame to the main flame. In other words, by providing slit flame openings on the partition walls on both sides facing the concave thermocouple storage chamber, a flame is formed integrally with the main flame in the thermocouple storage chamber where no main flame is formed. The secondary flame directly heats the thermocouple provided in the thermocouple storage chamber. Therefore, a flame is formed on the thermocouple storage chamber side, so that the balance of the flame of the entire stove is maintained. In addition, since the size of the secondary flame can be appropriately maintained as it is, there is no adverse effect that the thermocouple is surrounded by the internal flame having a low flame temperature. Further, since a flame is formed at the slit flame opening provided on the opposing partition walls, a fire is generated between the auxiliary flame formed on the central partition wall and the main flame adjacent to the thermocouple storage chamber. Make the transition smooth.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, a preferred embodiment of a stove burner of the present invention will be described below. It should be noted that the feature of the stove burner of the present embodiment lies in the thermocouple storage chamber, and the basic configuration of the stove burner is the same as that of the conventional example, and therefore, the duplicated description will be omitted.

As shown in FIG. 1, a thermocouple 4 and an electrode 2
The two thermocouple storage chambers 6 are formed by partitioning a part of an annular mounting space 26 between the burner head 2 and the burner main body 3 facing the burner head 2 in a concave shape by three partition walls 34, 5a, and 5b and opening the outer peripheral side. Is done. The three partition walls 34, 5a, 5b are provided on the burner head 2 side, and the thermocouple storage chamber 6 is formed by the partition wall 34 in the center direction and the partition walls 5a, 5b on opposite sides. Among the three partition walls, a flame port different from the main flame port 9, that is, an auxiliary flame port 10 for ignition and flame detection is provided on a partition wall 34 in the center direction. In addition, a step 8 is provided in the middle of the abutting surfaces of the opposing partition walls 5a, 5b with the burner main body 3, and a portion from the step 8 to the outer periphery is made 0.6 mm lower than other portions. When the burner head 2 is mounted on the burner main body 3, the lowered portion forms a gap for injecting an air-fuel mixture into the thermocouple storage chamber 6, that is, a slit flame port 7. The flame formed in the slit flame opening 7 is formed at a portion near the outer periphery of the thermocouple storage chamber 6 and toward the inside of the thermocouple storage chamber 6.

Therefore, a flame is formed integrally with the main flame 11 formed adjacent to the thermocouple storage chamber 6 at the portion of the thermocouple storage chamber 6 where the main flame 11 is not formed, so that the entire stove is formed. The balance of the flame of the food is made uniform, and the unevenness of the burn on the food is reduced. Further, since a flame is formed in a portion near the outer periphery of the thermocouple storage chamber 6, the thermocouple 4 provided in the thermocouple storage chamber 6 is wrapped in an inner flame having a low flame temperature to reduce the electromotive force. No adverse effects such as Therefore,
Even in the early stage of ignition, there is no possibility that the fire is erroneously determined to be a misfire and extinguished. Further, the flame formed in the slit flame opening 7 is formed so as to be connected to the main flame 11 formed adjacent to the thermocouple storage chamber 6 and is formed toward the inside of the thermocouple storage chamber 6. The fire from the auxiliary flame 12 to the main flame 11 formed on the partition wall 34 in the center direction of the storage chamber 6 is made smooth.

The embodiment of the present invention has been described above.
The present invention is not limited to these embodiments at all, 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 of the slit flame opening 7 (gap in the height direction) 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 large. By the amount of the air-fuel mixture, it is appropriately determined in consideration of the flame balance of the whole stove. Further, the width of the slit flame opening 7 is not limited to the same width over a portion extending from the step 8 to the outer periphery. At a portion near the outer periphery, the flame width is reduced by reducing the flame width, and a portion far from the outer periphery (at the step 8). In the (close portion), the width of the flame port may be increased to form a tapered flame port that forms a large flame. By adjusting the degree of taper appropriately, the portion of the thermocouple storage 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 manually opens a magnet type safety valve connected in series with the thermocouple 4, and closes the gas safety channel by closing the magnet safety valve when the electromotive force drops below a predetermined level, thereby closing the gas passage. It may be a device.

[0014]

As described above in detail, according to the cooking stove of the present invention, it is possible to improve not only the inherent characteristics of the cooking device for improving the unevenness of burning but also the fire transfer performance. The effect is excellent.

[Brief description of the 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 shapes of a mounting surface of a burner head and a burner main 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 main body 4 Thermocouple 5a Partition wall 5b Partition wall 6 Thermocouple storage room 7 Slit flame port 9 Main flame port 10 Secondary flame port 11 Main flame 12 Secondary flame

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-269812 (JP, A) JP-A-5-118546 (JP, A) JP-A 7-32317 (JP, U) JP-A 4-269 63913 (JP, U) JP-A-63-167027 (JP, U) JP-A 3-79038 (JP, U) JP-A 7-32317 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) F23D 14/06 F23D 14/48 F23N 5/10

Claims (1)

(57) [Claims] 1. A burner head having an annular mixture chamber, a burner head detachably mounted on a head of the burner body, and having a plurality of flame slots formed on a peripheral edge thereof in a radial direction to form a main flame port. A part of an annular mounting surface formed between the burner head and the burner main body is formed in a concave shape by three-sided partition walls to form a thermocouple storage chamber whose outer peripheral side is opened, In the stove burner provided with a secondary flame port in the partition wall in the center direction of the partition wall, and provided with a thermocouple that generates an electromotive force facing the secondary flame from the secondary flame port in the thermocouple storage chamber, An air-burning burner, wherein a slit flame port through which an air-fuel mixture is ejected is provided on opposing ones of the concave partition walls forming the thermocouple storage chamber.