JP3784777B2 - Gas burner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the structure of a burner top of a gas burner.
[0002]
[Prior art]
In order to provide a gas stove at low cost, it is necessary to simplify the configuration of the gas burner as much as possible. FIG. 5 shows the configuration of the burner top on the small burner side of a conventional gas stove equipped with a large burner and a small burner. The burner top 120 includes a burner venturi 122, a burner body 124, and a burner head 126. The burner venturi 122 is formed by drilling an air hole 122a for taking in primary air into a pipe. The burner body 124 includes two members, an upper member 124a and a lower member 124b. The upper member 124a is a plate-like member that has a hole in the center and is inclined so that the peripheral side is slightly raised from the center side. The lower member 124b is a bowl-shaped member having a hole at the bottom. The upper member 124a is fixed so as to cover the upper end of the lower member 124b. A tooth-shaped flame hole is formed in the lower end surface of the burner head 126, and the lower end surface is inclined at the same angle as the upper member 124a of the burner body 124.
These members 122, 124, and 126 are assembled as follows. The upper end of the burner venturi 122 is inserted into the hole at the bottom of the lower member 124b of the burner body 124 and crimped. The burner head 126 is detachably mounted on the upper member 124a of the burner body 124.
[0003]
[Problems to be solved by the invention]
However, with the burner top as described above, when spilling occurs during cooking, the broth easily enters from between the burner head and the burner body, which takes time and care. Furthermore, cleaning is difficult if the invading broth reaches the burner venturi.
An object of this invention is to implement | achieve the gas burner which does not penetrate | invade into a burner body or a burner venturi.
[0004]
[Means, actions and effects for solving problems]
The gas burner of the present invention includes a burner venturi, a burner body, and a burner head.
The burner venturi has a pipe shape, is formed with air holes, and has a stringed portion that bulges outward near the upper end. The burner body is a substantially disk-shaped member, and a hole is formed in the center, and the upper end of the burner venturi is inserted and fixed in the hole. The burner head is supported by the peripheral edge of the burner body so as to cover the upper side and the peripheral surface of the burner body, and the lower end of the burner head extends downward from the burner body . Burner venturi is caulked deformed as the upper end of the burner venturi passing through the Hisashiana in the burner body is expanded, the burner body is sandwiched between the enlarged diameter portion and the cord out portion. The upper end of the enlarged diameter portion is located above the upper surface of the burner body around the central hole. In the burner body, ribs are formed between the peripheral edge and the enlarged diameter portion and at positions where the peripheral edge does not contact the enlarged diameter portion.
[0005]
In the structure of the conventional gas burner, since the spilled portion during cooking was easy to enter from between the burner head and the burner body, it took time for maintenance.
The burner head of the present invention has a shape that covers the upper and peripheral surfaces of the burner body. Boiled spills fall down the burner body along the burner head. Therefore, the broth rarely enters between the burner head and the burner body.
[0006]
The burner top of the gas burner of the present invention is composed of three members which are fewer than the number of members constituting the conventional burner top, and these can be easily formed. The burner venturi can be formed using off-the-shelf pipes by simply drilling , stringing and bending . The burner body is formed simply by processing holes and ribs into a flat material by pressing. The shape of the burner head is also simple and can be easily formed by casting or the like.
The three members that are easily molded as described above are easy to assemble. First, the upper end of the burner venturi is inserted into the central hole of the burner body . After the upper end of the burner venturi is inserted until the protruding portion comes into contact with the lower surface of the burner body, the upper end of the burner venturi is crimped and deformed so that the diameter of the upper end is increased . As a result, the burner body is clamped and fixed between the stringing portion and the enlarged diameter portion. The burner head is placed on the burner body so as to cover the burner body from above. Thus, the assembly work efficiency is improved because the assembly is easy.
In the gas burner of the present invention, the number of parts of the burner top is reduced, the configuration is simplified, and the assembly is facilitated. By improving the assembly workability, a significant cost reduction can be realized.
[0007]
In the configuration of the conventional gas burner, spilled food during cooking easily enters from between the burner head and the burner body, and the invaded broth may reach the inside of the burner venturi through the burner body.
In the burner body of the gas burner of the present invention , ribs are formed between the peripheral edge and the above-mentioned enlarged diameter portion, and at positions where the peripheral edge and the enlarged diameter portion do not contact . The burner head of the present invention is shaped to cover the upper side and the peripheral surface of the burner body, and the broth hardly enters between the burner head and the burner body. More burner body, be between the peripheral edge and the enlarged diameter portion of its, since the ribs are formed at a position not contacting the periphery and its enlarged diameter section, there may unlikely event broth is such that intrusion However, since the broth is blocked by this rib, it does not reach the caulking part of the burner venturi. As a result, the broth does not adhere to the inside of the burner venturi, and corrosion in the burner venturi can be prevented. Costs can be reduced because there is no need to take corrosion countermeasures in the burner venturi. The dirt on the burner body can be easily wiped off and maintenance is not required.
[0008]
The gas burner of the present invention has a stop plate attached to the burner body and extending outside the outer periphery of the burner head, and flame detection means fixed to the stop plate and disposed outside the outer periphery of the burner head. It is preferable that a notch that engages with the stop plate is formed in the side wall.
[0009]
Usually, a gas burner requires flame detection means such as a thermocouple. In order to make it easier to detect the flame, the flame hole group formed in the part facing the detection part of the flame detection means has a larger flame hole diameter than the other flame hole groups, or the flame of the flame detection means. or is formed as you ejected toward the detection section. For this reason, it is necessary to position the burner head when placing it on the burner body.
In the gas burner of the present invention, the stop plate that supports the flame detecting means is fixed to the burner body and protrudes to the outside of the outer periphery of the burner head, and supports the flame detecting means outside the outer periphery of the burner head. In order to prevent the burner head and the stop plate from interfering with each other, a notch for engaging with the stop plate is formed on the side wall of the burner head. When placing the burner head on the burner body, the burner head can be placed horizontally if it is placed so that the stop plate and the notch are engaged. Faces the detection part of the flame detection means. When the burner head is placed so that the stop plate and the notch are not engaged, the side wall of the burner head rides on the stop plate and tilts. Thus, the burner head can be accurately positioned without providing a positioning member. In addition, the user can easily determine erroneous installation. If the side wall of the burner head is made longer, it is easier to determine the wrong installation.
[0010]
It is preferable that the stopper plate and the notch are formed at positions that do not prevent the upper surface of the burner body and the lower surface of the burner head from making surface contact along the circumference. In this case, no gas is ejected from the gap between the burner body and the burner head.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described.
(Mode 1) The burner top is composed of three members, a burner venturi, a burner body, and a burner head, and these shapes are simple.
(Form 2) The burner body is covered with the burner head at the upper part and the peripheral surface. The lower end of the burner head is located below the burner body. The burner body has a central hole and a concentric rib.
[0012]
【Example】
One embodiment embodying this embodiment will be described with reference to FIGS. FIG. 1 is an external perspective view of a gas stove provided with the gas burner of the present embodiment, FIG. 2 is an exploded perspective view of a burner top of the gas stove, and FIG. 3 is a longitudinal sectional view of the gas stove.
As shown in FIG. 1, the gas stove 10 according to the present embodiment has a simple configuration including a set of burners. A heating mechanism such as a burner top 20 to be described later is housed in a casing made up of the side plate 12, the rear plate (14: see FIG. 3), and the top plate 16. On the periphery of the opening 16a of the top plate 16, a juice receiver 18 formed integrally with Gotoku is placed.
[0013]
The burner top 20 is shown in FIG. The burner top 20 is composed of three members: a burner venturi 22, a burner body 24, and a burner head 26. The burner venturi 22 is formed by bending a pipe into a substantially L shape and drilling an air hole 22a for taking in primary air. The burner body 24 is a circular flat plate, has a hole in the center, and is formed into a shape having a rib 24b concentric with the hole 24a. Specifically, press forming is performed on a flat plate, and cutting, drilling, and bead processing of the rib 24b are processed at a time. FIG. 2 shows a state in which the burner venturi 22 and the burner body 24 are assembled. These assembling will be described later. The burner head 26 has a shape in which a dish-like member is turned upside down, and is cast using a mold. The flame hole 26a is formed by drilling after casting.
[0014]
The configuration of the gas stove 10 will be described. As shown in FIG. 3, the gas stove 10 includes a manifold 28 that is a gas supply pipe and a cock 32 that is opened and closed by a switch 30, and a burner venturi 22 is connected to the tip of the cock 32. The burner venturi 22 is supported by the cock 32 and a support plate (not shown). In the vicinity of the upper end of the burner venturi 22, a stringing portion 22b is formed. The tip of the burner venturi 22 is inserted into the hole 24a formed in the burner body 24 up to the stringing portion 22b and caulked. The burner body 24 fixed to the burner venturi 22 in this way is horizontal with respect to the installation surface of the gas stove 10. A burner head 26 is detachably placed on the burner body 24. Specifically, a hooking portion 26 b formed on the inner wall of the burner head 26 is placed on and supported by the peripheral edge of the burner body 24.
[0015]
In the conventional burner top shown in FIG. 5, spilled food during cooking tends to enter the burner head 126 and the burner body 124 through the burner head 126. If the invading broth further enters the burner venturi 122 from the burner body 124, it is difficult to remove.
In the burner top 20 of this embodiment, the burner head 26 has a shape that covers the upper side and the peripheral surface of the burner body 24. Since the burner body 26 is covered with the burner head 26, even if the spillage falls on the burner head 26 and is transmitted, it falls without adhering to the burner body 24. Therefore, the broth hardly enters the inside of the burner venturi 22. Even if the broth intrudes between the burner head 26 and the burner body 24, ribs 24b are formed in the burner body 24, and the broth is blocked by the ribs 24b. Can be prevented from entering the burner venturi 22. If the broth does not adhere to the burner venturi 22, it is not necessary to take any countermeasure against corrosion in the burner venturi 22, and the cost can be further reduced. In addition, since the strength of the burner body 24 is increased by the ribs 24b of the burner body 24, the plate thickness can be reduced to further reduce the cost.
[0016]
Moreover, it may replace with the burner head 26 of a present Example, and may be the burner head 46 shown in FIG. An umbrella part 46 c projects from the upper part of the burner head 46. According to the burner head 46 having such a shape, even if boiled food during cooking falls on the burner head 46, the burner head 46 falls from the tip of the umbrella portion 46 c of the burner head 46 and propagates along the peripheral surface of the burner head 46. There is no. In addition to reliably preventing the broth from entering the burner body 24, the broth does not block the flame hole 46c, so that good combustion can be maintained.
[0017]
According to the configuration of the burner top 20 of the gas stove 10 of the present embodiment, the number of parts can be reduced as compared with the conventional burner top (see FIG. 5). Further, the three members constituting the burner top 20 (the burner venturi 22, the burner body 24, and the burner head 26) can be easily molded. The burner venturi 22 may be formed by simply bending or drilling a ready-made pipe. The burner body 24 is molded by a single press process. The burner head 26 is formed by casting and drilling. However, since the shape is simple, it can be easily and inexpensively performed. Since the assembly of these three members is very easy, productivity can be improved and costs can be reduced.
[0018]
Next, another embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a plan view of the main part of the burner top 60 of the gas stove 50 of the present embodiment, and FIG. 7 is a vertical sectional view of the main part of the gas stove 50. Note that the gas stove 50 is obtained by disposing a flame detecting means on the gas stove 10 of the previous embodiment, and the same members as those of the gas stove 10 are denoted by the same reference numerals.
As shown in FIGS. 6 and 7, a thermocouple 52, which is a flame detection means, is disposed on the burner top 60 of the gas stove 50. The thermocouple 52 performs flame detection by capturing an electromotive force generated by the flame. The thermocouple 52 is disposed outside the outer periphery of the burner top 60. As shown particularly in FIG. 7, the thermocouple 52 is supported by a lower surface of the burner body 24 and a stop plate 54 fixed to the burner venturi 22. The stop plate 54 extends outward from the lower surface of the burner body 24 and extends to the outer periphery of the burner top 60. The lower end of the stop plate 54 is supported by the support plate 58. A flame detection unit 52 a is provided at the upper end of the thermocouple 52. The thermocouple 52 is disposed such that the detection unit 52a faces the flame hole 56a of the burner head 56, and the detection unit 52a is disposed in an inclined state toward the burner head 56.
[0019]
The diameter of the flame hole 56a1 formed in the location facing the detection part 52a of the thermocouple 52 is formed larger than the diameter of the other flame hole 56a not facing the detection part 52a, and the flame from the flame hole 56a1 is detected. position and shape of the burner port 56a1 as you ejected toward the part 52a has been devised. Even when the input (gas flow rate) is at a minimum, the flame reaches the detector 52a, so that the flame can be reliably detected. Therefore, when the burner head 56 is placed on the burner body 24, it is necessary to position the burner head 56 so that the flame ejected from the flame hole 56a1 hits the detection part 52a of the thermocouple 52 accurately. Therefore, a triangular positioning mark 56c indicating the position of the flame hole 56a group facing the detection unit 52a is engraved on the upper surface of the burner head 56 as a guide for placement. When the burner head 56 is placed on the burner body 24, the burner head 56 can be easily positioned by aligning the positioning mark 56 c with the thermocouple 52.
[0020]
A stop plate 54 that supports the thermocouple 52 is fixed to the lower surface of the burner body 24 and protrudes to the outer periphery of the burner head 56, and supports the thermocouple 52 outside the outer periphery of the burner head 56. In order to prevent the side wall of the burner head 56 and the stop plate 54 from interfering with each other, a cutout portion 56 d that engages with the stop plate 54 is formed on the side wall of the burner head 56. The upper end of the notch 56 d is located below the upper surface of the burner body 24. That is, the notch portion 56d does not communicate with the burner, and gas does not leak from the notch portion 56d. The stop plate 54 and the notch 56d are formed at positions that do not prevent the upper surface of the burner body 24 and the lower surface of the burner head 56 from coming into surface contact along the circumference. That is, when the burner head 56 is placed on the burner body 24, the upper surface of the burner body 24 and the lower surface of the burner head 56 are in surface contact along the circumference, and the upper end of the notch 56d is in contact with the upper surface of the stop plate 54. do not do. When the burner head 56 is placed on the burner body 24, if the stop plate 54 and the notch 56d are placed so as to engage with each other, the flame hole 56a1 formed for detecting the flame becomes the detecting portion 52a of the thermocouple 52. Opposite to. When the burner head 56 is placed so that the stop plate 54 and the notch 56d do not engage with each other, the side wall of the burner head 56 rides on the stop plate 54, and the burner head 56 is inclined. Therefore, when the burner head 56 is placed on the burner body 24, the burner head 56 can be accurately positioned by engaging the stopper plate 54 with the notch 56d. Further, even if the user incorrectly installs the burner head 56, it can be easily noticed. If the side wall of the burner head 56 is made longer, the amount of ride will increase, and it will be easier to determine erroneous installation.
[0021]
The gas burner of the present invention has such a shape that the spilled portion does not enter the burner body or the burner venturi. For this reason, the corrosion by adhesion of boiled juice can be prevented. Further, the number of members constituting the burner top is as small as three, and the shape of each member is simple. Since molding and assembly are easy, production workability can be improved and costs can be reduced.
[0022]
Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.
In addition, the technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a gas stove provided with a gas burner according to the present embodiment.
FIG. 2 is an exploded perspective view of the burner top of the gas stove.
FIG. 3 is a longitudinal sectional view of the gas stove.
FIG. 4 is a longitudinal sectional view of an essential part of another burner top of the gas stove.
FIG. 5 is a longitudinal sectional view of a conventional burner top.
FIG. 6 is a plan view of an essential part of a burner top of a gas stove according to another embodiment.
FIG. 7 is a longitudinal sectional view of an essential part of the gas stove.
[Explanation of symbols]
10: Gas stove 12: Side plate 14: Rear plate 16: Top plate 18: Juice receiver 20: Burner top 22: Burner venturi 22a: Air hole 22b: Stringing part 24: Burner body 24a: Hole 24b: Rib 26: Burner head 26a : Flame hole 26b: Hook 28: Manifold 30: Switch 32: Cock 46: Burner head 46a: Flame hole 46c: Umbrella 50: Gas stove 52: Thermocouple 52a: Detector 54: Stop plate 56: Burner head 56a: Flame hole 56c: Positioning mark 56d: Notch 58: Support plate 60: Burner top

Claims (3)

A burner venturi having a pipe shape in which an air hole is formed, and a stringed portion bulging outward is formed near the upper end;
A burner body having a substantially disc shape with a hole formed in the center, and an upper end of a burner venturi inserted and fixed in the center hole;
A burner head that is supported by the periphery of the burner body so as to cover the upper surface and the peripheral surface of the burner body, and whose lower end extends below the burner body;
And
Burner venturi, prior SL upper end of the burner venturi having passed through the central hole are caulked deformed to diameter, and the burner body is sandwiched between the enlarged diameter portion and the cord out portion, of the enlarged diameter portion The upper end is located above the upper surface of the burner body around the center hole,
The burner body, be between the peripheral edge and the enlarged diameter portion of its, characterized in that the rib is formed at a position not in contact with the peripheral edge and the enlarged diameter portion gas burner. A stop plate attached to the burner body and extending outside the outer periphery of the burner head, and a flame detection means fixed to the stop plate and disposed outside the outer periphery of the burner head, on the side wall of the burner head The gas burner according to claim 1 , wherein a notch that engages with the stop plate is formed. 3. The gas burner according to claim 2 , wherein the stopper plate and the notch are formed at positions that do not prevent the upper surface of the burner body and the lower surface of the burner head from being in surface contact with each other along the circumference.

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