JP2000205518A - Burner and small kitchen range using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burner having high heat efficiency and a wide variable range of combustion amount and a small kitchen range which can exhibit a good cooking performance by using the burner. SOLUTION: Short-slit flame holes 44a and 44b are provided radially at regular intervals between adjacent long-slit flame hole groups 43 on the inclined surface of a burner cap 42 mounted with a broth shielding body 14. Therefore, high heat efficiency can be secured and fallen matters can be prevented from getting in a flame hole section 41, by making flames shorter in length by suppressing the interference among the flames, and by realizing smooth ignition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner using gas or the like as a fuel and a stove using the burner as a heating source.

[0002]

2. Description of the Related Art Conventionally, a burner of this kind is disclosed in
There was one described in US Pat. No. 9119.
This burner is, as shown in FIGS.
A large number of flame ports 71 facing inward are arranged in the circumferential direction of the inner peripheral surface,
An annular burner 72 that burns with air within ± 30% of the theoretical combustion air amount, and the bottom of which is closed by a shield plate 83.
No. 3 achieves low NOx while suppressing the supply of secondary air and burning it to ensure high thermal efficiency.

[0003]

However, when a conventional burner is applied to a stove or the like, when boiling occurs, not only overflowing broth accumulates on the shielding plate 73, but also the flame concentrates inside. Therefore, the combustion depends on the primary air, and there is also a problem that the flame length is prolonged for the secondary air. The present invention solves the above-mentioned conventional problems, by raising the direction of the flame, promoting the diffusion of secondary air from the surroundings to improve the combustibility, and at the same time securing a wide strong and weak throttle width. It is a first object of the present invention to provide a burner capable of shortening the flame length. Then, using the burner as a stove burner, it secures good cooking performance while securing high heat efficiency by shortening the distance to the object to be heated such as a pot, and also suppresses the accumulation of boiling juice due to boiling. A second object is to provide a cooker that can be obtained.

[0004]

According to the present invention, in order to achieve the first object, a side surface is inclined from the upper part to the lower part on a burner main body in which a mixing chamber for a fuel premix gas is formed. Provided a burner cap provided with an opening at the top, and provided with a flame port on the slope, so that the upper end of the boiling juice shield and the burner cap provided with the opening cylinder are in close contact with each other, An opening is fitted to the opening cylinder. The burner cap is made of heat resistant stainless steel,
It is composed of a metal plate having corrosion resistance. Further, the flame port portion is a plurality of lengths of slit flame ports provided radially from an upper portion to a lower portion of the inclined surface of the burner cap, and a short slit flame port is provided between adjacent long slit flame ports. Is provided at the upper part of the flame outlet. Further, the outer diameter of the boiling juice shield is made larger than the outer diameter of the combustion surface of the burner cap.

According to the above invention, since the flame opening is provided on the inclined surface from the upper part to the lower part of the burner cap, the entire flame is generated almost directly upward to promote the concentration of heat and also to reduce the heating power. Even if it is squeezed, the space between the lower part of the outer periphery of the broth shield and the upper part of the burner cap becomes a flame holding space, and stable combustion can be ensured up to a low combustion amount. In addition, because the flame opening is provided with a short slit flame between adjacent long slit flame groups, not only the short slit makes good fire transfer,
It is possible to suppress the interference between the flames formed by the long slit flame port group, divide the flame, and to shorten the flame as a whole flame port portion. Also, the outer diameter of the boiling shield is larger than the outer diameter of the lower part of the inclined surface, and the short slit flame port is provided at the upper part of the flame port, so that falling objects such as broth enter the flame port. Can be prevented, and good fire transfer can be maintained.

In order to achieve the second object, according to the present invention, a juice receiving tray is disposed at a stove opening of a top plate, and the long slit flame opening and the short slit flame opening are provided at a burner opening of the juice receiving tray. A burner is provided, and a sword of Gotoku is provided at a position corresponding to the upper part of the short slit flame opening.

[0007] According to the above invention, when cooking with a pot or the like placed on a gotoku, the burner is configured to have a shorter flame.
Even if the distance between the pot and the burner is short, stable combustion with little emission of CO and the like can be realized, so that high thermal efficiency can be secured.
Also, since the claw body of Gotoku is located just above the short slit,
The claws are less likely to be strongly attacked by the flame, which can reduce the thermal efficiency and minimize the emission of CO. Furthermore, the spilling from the pot is also blocked by the broth shield, so that clogging of the flame opening by the broth can be suppressed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a burner body having a fuel premixed gas mixing chamber formed therein, a burner cap mounted on the burner body and having an upper opening, and a broth having an open cylinder. It is composed of a shield, and the side surface portion of the burner cap is constituted by an inclined surface which is inclined in the outer peripheral direction from the upper part to the lower part over the entire circumference, and a flame port is provided on the inclined surface,
The opening cylinder is fitted to the opening so that the boiling shield is in close contact with the upper end of the burner cap.

Since the flame outlet is provided on the inclined surface from the upper part to the lower part of the burner cap, the entire flame is generated almost directly upward to promote the concentration of heat, and even when the combustion amount is low. The space between the lower part of the outer peripheral part of the boiling juice shield and the upper part of the burner cap serves as a flame holding space, so that stable combustion can be secured up to a low combustion amount.

[0010] Further, the burner includes a burner main body in which a mixing chamber for the fuel premixed gas is formed, a burner cap mounted on the burner main body and provided with an opening at an upper portion, and a boiling shield provided with an opening cylinder. The side portion of the burner cap is constituted by an inclined surface inclined in the outer peripheral direction from the upper portion to the lower portion over the entire circumference, and a flame port is provided on the inclined surface, between the upper end of the burner cap and the boiling shield. The opening cylinder is fitted into the opening so as to form a gap, and an air passage communicating with the inside of the opening cylinder is provided in the gap.

Since a secondary air passage communicating with the inside of the opening cylinder is formed between the upper portion of the burner cap and the lower portion of the boiling juice shield, the secondary air supply to the flame is improved and the flame is shortened. It is promoted and stable combustion can be ensured.

A burner main body having a fuel premixed gas mixing chamber formed therein, a burner cap mounted on the burner main body and having an opening at an upper portion, and a boiling shield having a cylinder closed at an upper end. The burner cap has a side surface portion, which is constituted by an inclined surface inclined in an outer peripheral direction from an upper portion to a lower portion over the entire periphery, and a flame port portion is provided on the inclined surface,
The tube is fitted into the opening so as to form a gap between the upper end of the burner cap and the boiling shield, and an air passage communicating with the inside of the cylinder is provided in the gap.

[0013] Similarly, since a secondary air passage communicating with the inside of the cylinder is formed between the upper part of the burner cap and the lower part of the broth shield, the secondary air flow is entirely supplied from the air passage to the flame. In addition, not only can stable combustion be ensured, but also because the upper end of the cylinder is closed, the broth can be completely prevented from entering the cylinder. Further, the outer diameter of the boiling juice shield is larger than the outer diameter of the lower portion of the flame opening.

[0014] When viewed from the top, the boiled shield covers the flame opening, and it is possible to prevent a falling object from above such as the broth from entering the flame opening.

Further, the burner cap is made of a metal plate having heat resistance and corrosion resistance such as stainless steel.

By forming the material of the burner cap by a stainless steel plate or the like, the slit flame port and the like can be pressed, and by selecting the plate thickness, the slit flame can be cut as compared with the conventional forging or casting. The degree of freedom in selecting the width and the flame pattern can also be increased.

Further, a plurality of slit flame ports are provided in which the flame port portion is provided radially in the outer peripheral direction from the upper part to the lower part of the inclined surface.

Since the slit flame ports are provided radially, the interval between the adjacent slit flame ports at the lower portion of the flame port is widened, and the secondary air inflow from the lower portion becomes good, and the short flame is generated. Can be achieved.

Further, the flame port portion is formed of a plurality of types of slit flame ports which are radially provided in an outer peripheral direction from an upper part to a lower part of the inclined surface, and a short slit is provided between adjacent long slit flame ports. It has a flame outlet.

Since the short slit flames are arranged between the adjacent long slit flame groups, in the case of a large amount of combustion, the short slit flames may interfere with the flames formed by the long slit flame groups. In addition to shortening the flame by dividing the flame by suppressing the flame, the fire transfer between the long slit flame port groups can be improved, and the flame holding property can be improved when the combustion amount is low.

Further, the short slit flame outlet is provided above the inclined surface.

By providing the short slit flame mouth on the upper part of the inclined surface, it is possible to prevent falling objects such as boiling water from entering the short slit flame mouth, and to maintain good fire transfer.

Further, the end in the longitudinal direction of the slit flame outlet is formed in an R shape. And since the both ends of the slit flame opening are R-shaped, when the fuel pre-mixture passes through the slit flame mouth, it is possible to prevent turbulence at both ends, so that not only can the flame lift be suppressed,
It is possible to extend the life of the mold even when processing the flame outlet.

A top plate having a stove opening; a juice tray having a burner opening provided in the stove opening;
The burner according to claim 7, further comprising a burner provided above the juice receiving tray and the burner according to claim 7 provided at the burner opening, wherein the claw body of the burner is disposed at a position corresponding to an upper portion of a short slit of the burner. Things.

When a pot or the like is placed on a gotoku and cooked, the flame formed by the burner is shortened as described above. Therefore, even if the distance between the pot and the burner is shortened, CO2 is reduced. The claw body is located above the short slit flame outlet, so that there is little heat loss due to the contact between the claw body and the flame, thereby realizing low CO combustion and high thermal efficiency. Further, when the amount of combustion is low, as described above, the flame retention is high and the amount of flame is small, so that a state suitable for cooking with low heating power can be realized. Further, when the boiling occurs from the pot, the boiling shield can prevent the boiling juice from dropping into the flame opening and causing clogging.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a main part of a burner A according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 1 denotes a burner body, which is formed integrally with a mixing pipe portion 2 made of a heat-resistant metal and for mixing a fuel premixed gas, and an annular mixing chamber 5 formed by an inner peripheral wall 3 and an outer peripheral wall 4. The space surrounded by the inner peripheral wall 3 forms a through-air port 6. 7 is SUS304, SUS316,
A burner cap formed by molding a sheet metal material having excellent heat and corrosion resistance, such as austenitic stainless steel such as SUS321 or ferritic stainless steel such as SUS430 or SUS436, into a substantially truncated cone shape.
And an opening 8 corresponding to the above, constitutes an inclined surface 9 inclined in the outer peripheral direction from the upper part to the lower part of the burner cap 7, and a slit flame port group 11 composed of a number of slits 10 penetrating the inclined surface 9 is radially formed. The flame outlets 12 are provided in a distributed manner. Further, the flame outlet 12 is not limited to the slit 10 and may be an aggregate of many small flame outlets. At the bottom of the burner cap 7, there is a cover 1
3 is fitted so that the broth or the like does not fall directly on the burner main body 1. Reference numeral 14 denotes a substantially annular boiling juice shield provided with an opening cylinder 15 at substantially the center. The opening cylinder 15 is fitted into the opening 8 of the burner cap 7 so that the upper part of the burner cap 7 and the boiling juice shield 14 are in close contact with each other. Let me. The boiling juice shield 14 has a configuration in which the outer diameter of the outer peripheral portion is larger than the outer diameter of the lower portion of the flame opening 12 of the burner cap 7 by about 1 to 2 mm, and includes the flame opening 12 when viewed from above. . In addition, as a material of the boiling juice shield 14, besides a forging material such as brass, a heat-resistant and corrosion-resistant material similar to the burner cap 7, a ceramic molded body, aluminum, and the like can be used.

Next, the operation and action will be described. The fuel premixed gas is sucked through the mixing pipe section 2 and diffuses uniformly into the mixing chamber 5 to form a flame at the flame opening 12. At this time, the flame formed by the flame port 12 is generated obliquely upward along the taper of the inclined surface 9, but passes through the outer peripheral portion of the burner cap 7 and the air port 6 of the burner main body 1, so that the boiling juice shield 1
By being caught by the secondary air flowing in from the opening cylinder 15 of 4 as an ascending airflow, combustion is promoted in the vicinity of the flame opening 12 to become a high-temperature flame, and at the same time, it is directed upward. Further, between the lower part of the broth shield 14 and the upper end of the burner cap 7, an upward flame hits the lower part of the broth shield 14 and stagnation is likely to occur, so that the flame holding property is improved. Even a stable flame is formed. In addition, in the case of a low combustion amount, since the burner cap 7 is made of a stainless steel plate, the temperature of the flame opening 12 can be raised at an early stage after ignition, so that the flame can be fixed quickly and the fire extinguishing phenomenon can be prevented. it can. Therefore, since heat can be prevented by concentrating the flame directly above in a wide range from a large combustion amount to a low combustion amount,
A burner for a cooker having efficient heat transfer and a wide range of variable heating power can be realized. Further, by forming the burner cap 7 by a stainless steel plate or the like, the width of the slit 10 of the flame port can be normally pressed in a range of 0.8 to 1.2 times the plate thickness, and the flame port shape can be improved. The degree of freedom of the selection can be expanded. Therefore, it is easy to optimize the plate thickness and slit width of the burner cap 7 even in the case of a fuel having a high combustion rate such as a mixture of hydrogen and air.

(Embodiment 2) FIG. 2 is a sectional view of a burner B according to Embodiment 2 of the present invention.

In the figure, the difference from the first embodiment is that a gap 22 is provided between the broth shield 21 and the entire upper end of the burner cap 7, and the inside of the opening cylinder 23 corresponds to the opening of the opening cylinder 23. Is provided with an air passage 24 communicating with the air passage.

The components having the same reference numerals as in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation and the operation will be described. The flame is similarly formed at the flame opening 12, but the secondary air flowing in from the opening cylinder 23 as an ascending airflow is passed through the air passage 24 to the boiling shield. It passes through a gap 22 between the lower part of the burner cap 21 and the upper end of the burner cap 7 and diffuses into the flame to promote combustion.
Therefore, the flame can be further shortened even at a large combustion amount. The gap is 3 to 5 mm to obtain the amount of air suction.
Is appropriate.

(Embodiment 3) FIG. 3 is a sectional view of a burner C according to Embodiment 3 of the present invention.

In the figure, the difference from the second embodiment is that a cylinder 3 with its upper end closed so that the upper end of the broth shield 31 is closed.
2 is provided.

The components having the same reference numerals as those of the second embodiment have the same structure, and the description is omitted.

Next, the operation and function will be described. Since the upper end of the broth shield 31 is closed, all the secondary air flowing from the cylinder 32 is supplied to the flame through the air passage 24, so that the combustion promoting effect is obtained. It is possible to further improve and shorten the flame at a large combustion amount. Also, the boiling juice shield 31
By closing the upper end of the container, the invasion of broth or the like can be completely prevented.

(Embodiment 4) FIGS. 4A and 4B are top views of a burner cap of a burner D according to Embodiment 4 of the present invention.
It is a side view of the burner D.

In the drawing, the difference from the first embodiment is that the flame slit 41 is formed on the inclined surface 9 of the burner cap 42 and between the long slit flames 43 adjacent to each other.
And short short slits 44b are provided radially at regular intervals, and the short slit flame port 44a and the short slit flame port 44 are provided.
The upper end of b is arranged above the flame outlet 41.

The components having the same reference numerals as in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation and operation will be described. A short slit flame port 44 is disposed between adjacent long slit flame port groups 43.
a, since the short slit flame ports 44b are provided radially at regular intervals, in the case of a large amount of combustion, the presence of the short slits 44a and the short slits 44b causes interference between the flames formed by the long slit flame port groups 43. It plays the role of suppressing and dividing the flame, and also realizes a smooth fire transfer between the adjacent long slit flame port groups 43. On the other hand, by arranging the upper ends of the short slit flame port 44a and the short slit flame port 44b at the upper part of the flame port 41, the small flame formed by the short slit flame port 44a and the short slit flame port 44b can be protected by the broth shielding body 14. Can be stabilized by bringing the short slit flame opening 44a and the short slit flame opening 44b into clogging due to a drop of boiling liquid or the like.

(Embodiment 5) FIG. 5 is an enlarged view of a flame port 51 of a burner E according to Embodiment 5 of the present invention.

The difference from the first embodiment is that a short slit flame 54a and a shorter short slit 54b are fixed between the adjacent long slit flame groups 53 on the inclined surface 9 of the burner cap 52 as the flame flame 51. Radially provided at intervals, the upper ends of the short slit flame 54a and the short slit flame 54b are arranged above the flame 51, and the upper and lower slits of the long slit flame 53, the short slit flame 54a, and the short slit 54b are arranged. The shape of the end is a semicircular shape.

The components having the same reference numerals as in the first embodiment have the same structure, and the description is omitted.

Next, the operation and operation will be described. The upper and lower ends of the slits of the long slit flame port group 53, the short slit flame port 54a, and the short slit 54b are formed in a semicircular shape, so that each flame port has a fuel reserve. Since the turbulence at both ends can be prevented when the air-fuel mixture passes, not only can the lift of the flame be suppressed, but also the life of the mold can be prolonged when machining the flame port.

(Embodiment 6) FIGS. 6 (a) and 6 (b) are main part top views showing a positional relationship between a claw body and a burner cap of a stove according to Embodiment 6 of the present invention, and main parts of the burner. It is sectional drawing.

In the drawing, a stove 64 having a burner opening 63 at the center is placed in a stove opening 62 of a top plate 61, and the burner E shown in the fifth embodiment is placed in the burner opening 63. In the vicinity of the outer periphery of the juice receiving tray 64, a got 66 having a claw body 65 for placing an object to be heated on a frame is provided,
At the position corresponding to the upper part of the short slit 54b,
Are disposed.

The components having the same reference numerals as those of the fifth embodiment have the same structure, and a description thereof will be omitted.

Next, the operation and action will be described. In the case where a pot or the like is placed on the claw body 65 of the gotoku 66 for cooking,
As described above, the flame formed by the flame port 51 of the burner E is shortened, so that even if the distance between the pot and the burner E is shortened, it is difficult for CO and the like to be generated. Since the claw body 65 of the virtue 66 is located immediately above the short slit 44b, the claw body 65 is not strongly fouled by the flame. Combustion and high thermal efficiency can be realized. Further, when the amount of combustion is low, as described above, the flame retention is high and the amount of flame is small, so that a state suitable for cooking with low heating power can be realized. Therefore, a highly efficient and stable combustion from a large combustion amount to a low combustion amount can be realized, and a cooker excellent in cooking performance can be provided. Further, when boiling occurs from the pot, the boiling shield 14 can prevent the boiling juice from dropping into the flame opening 51 immediately below.

[0050]

As described above, according to the present invention, the following effects can be obtained.

That is, according to the first aspect of the present invention,
The opening of the boiling shield is formed at the opening so that the flame opening of the burner cap has an inclined surface inclined in the outer peripheral direction from the upper part to the lower part of the side surface, and the upper part of the burner cap is brought into close contact with the boiling shield. Not only promotes the concentration of heat by generating the entire flame almost directly upwards, but also maintains the space between the lower part of the outer periphery of the broth shield and the upper part of the burner cap even in the case of low combustion. It becomes a flame space, and stable combustion can be secured up to a low combustion amount.

According to the second aspect of the present invention, a gap is formed between the upper end of the burner cap and the boiling shield, and an air passage communicating with the opening cylinder of the boiling shield is provided in the gap. As a result, a secondary air passage communicating with the inside of the opening cylinder is formed between the upper part of the burner cap and the lower part of the boiling juice shield, so that the secondary air supply to the flame is improved and the flame shortening is promoted. Thus, stable combustion can be further ensured.

According to the third aspect of the present invention, a space is formed between the upper end of the burner cap and the boiling shield provided with the closed tube, and the air passage communicating with the space inside the tube is formed. By providing, similarly, a secondary air passage communicating with the inside of the cylinder is formed, so that all the secondary air flow is supplied to the flame from the air passage, so that not only can stable combustion be further ensured, By closing the upper end of the tube, it is possible to completely prevent the broth from entering the tube.

According to the fourth aspect of the present invention, the size of the outer diameter of the broth shield is made larger than the outer diameter of the lower portion of the flame opening, so that the broth shield becomes flame when viewed from above. Since the mouth portion is included, it is possible to prevent a fallen object such as broth from entering the flame opening portion from above.

According to the fifth aspect of the present invention, since the burner cap is made of a heat-resistant and corrosion-resistant metal plate such as stainless steel, the slit flame port and the like can be pressed. By selecting the thickness,
Compared to conventional forging or casting, the degree of freedom in selecting the slit width and flame port pattern can be increased.

According to the sixth aspect of the present invention, the plurality of slit flame ports are provided radially in the outer peripheral direction from the upper part to the lower part of the inclined surface, so that the lower part of the flame part is formed. In this case, the interval between the adjacent slit flame opening groups is widened, and the secondary air inflow from the lower portion is good, and the flame can be shortened.

According to the seventh aspect of the present invention, the flame port portion is a group of a plurality of types of slit flame ports which are provided radially in the outer peripheral direction from the upper part to the lower part of the inclined surface, and are adjacent to each other. By arranging the short slit flame port between the matching long slit flame port group, in the case of a large combustion amount, the short slit flame port suppresses the interference between the flames formed by the long slit flame port group and reduces the flame. The flame can be shortened by dividing, and the fire transfer between the groups of long slit flames can be made good. In the case of a low combustion amount, the flame holding property can be made good.

According to the eighth aspect of the present invention, since the short slit flame is provided at the upper part of the inclined surface, falling objects such as boiling juice can be prevented from entering the short slit flame. Good transfer can be maintained.

According to the ninth aspect of the present invention, the end in the longitudinal direction of the slit flame has an R-shape, so that when the fuel premixture passes through the slit flame,
Since turbulence at both ends can be prevented, not only can the lift of the flame be suppressed, but also the life of the mold can be extended when machining the flame port.

According to the tenth aspect of the present invention,
By arranging the juice receiving tray provided in the stove opening, providing the burner in the burner opening, and disposing the claw body of Gotoku at a position corresponding to the upper part of the short slit flame opening of the burner, shortening the flame The distance between the pot and the burner can be shortened, and at the same time, the virtue claw body is located directly above the short slit, the claw body is less likely to be strongly attacked by flames, high thermal efficiency can be realized, and boiling from the pot occurs If you do, by the shield,
It is possible to prevent the broth from falling into the flame outlet immediately below.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a burner according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a burner according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a burner according to a third embodiment of the present invention.

4A is a top view of a burner cap of a burner according to a fourth embodiment of the present invention. FIG. 4B is a side view of the burner.

FIG. 5 is an enlarged view of a flame opening of a burner according to a fifth embodiment of the present invention.

FIG. 6 (a) is a top view of a main part showing the positional relationship between the virtues of the stove and the flame outlet according to the sixth embodiment of the present invention.

FIG. 7A is a top view of a conventional burner. FIG. 7B is a cross-sectional view of the burner.

[Explanation of symbols]

 A, B, C, D, E Burner 1 Burner body 5 Mixing chamber 7, 42, 52 Burner cap 8 Opening 9 Slope 11 Slit flame port group 12, 41, 51 Flame port section 14, 21, 31 Boiled juice shield 15, 23 opening cylinder 22 air gap 24 air passage 32 cylinder 11, 21, 31, 61 shielding body 22, 32 gap 43, 53 long slit flame port group 44a, 44b, 54a, 54b short slit flame port 61 top plate 62 stove opening Part 63 Burner opening 64 Juice tray 65 Claw body 66 Gotoku

 ──────────────────────────────────────────────────の Continuing on the front page (72) Katsumi Sasada, Inventor 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Yoshiyuki Gokajiya 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference) 3K017 AA02 AA09 AB04 AB05 AB08 AC02 AD01 AD11 AD14 AF01

Claims (10)

[Claims] 1. A burner main body having a mixing chamber for fuel premixed gas formed therein, a burner cap mounted on the burner main body and having an opening at an upper portion, and a boiling shield provided with an opening cylinder, The side surface portion of the burner cap is constituted by an inclined surface inclined in the outer peripheral direction from the upper portion to the lower portion over the entire circumference, a flame port is provided on the inclined surface, and the boiling shield is closely attached to the upper end of the burner cap. Thus, a burner in which the opening cylinder is fitted in the opening. 2. A burner main body having a mixing chamber for fuel premixed gas, a burner cap mounted on the burner main body and having an upper opening, and a boiling shield having an opening cylinder. The side portion of the burner cap is constituted by an inclined surface inclined in the outer peripheral direction from the upper portion to the lower portion over the entire circumference, and a flame port is provided on the inclined surface, between the upper end of the burner cap and the boiling shield. A burner in which the opening cylinder is fitted into the opening so as to form a gap, and the gap is provided with an air passage communicating with the inside of the opening cylinder. 3. A burner main body in which a mixing chamber for premixed fuel gas is formed, a burner cap mounted on the burner main body and provided with an opening at an upper part, and a boiling shield provided with a cylinder having a closed upper end. The burner cap has a side surface portion, which is constituted by an inclined surface inclined in the outer peripheral direction from the upper part to the lower part over the entire circumference, a flame port is provided on the inclined surface, and the upper end of the burner cap and the boiling juice shield A burner in which the cylinder is fitted into the opening so as to form a gap between the cylinders and an air passage communicating with the inside of the cylinder is provided in the gap. 4. The burner according to claim 1, wherein the outer diameter of the boiling shield is larger than the outer diameter of a lower portion of the flame opening. 5. The burner according to claim 1, wherein the burner cap is made of a heat-resistant and corrosion-resistant metal plate such as stainless steel. 6. The burner according to claim 1, wherein the flame port is a group of a plurality of slit flame ports radially provided in an outer peripheral direction from an upper portion to a lower portion of the inclined surface. 7. A plurality of types of slit flame ports having a plurality of lengths radially provided in an outer peripheral direction from an upper part to a lower part of the inclined surface, and a short slit is provided between adjacent long slit flame groups. The burner according to claim 6, wherein a flame port is arranged. 8. The burner according to claim 7, wherein the short slit flame outlet is provided above the inclined surface. 9. The end of the slit flame in the longitudinal direction is R
9. The burner according to claim 6, wherein the burner is shaped. 10. A top plate having a stove opening, a juice tray having a burner opening and provided in the stove opening, a virtue provided above the juice receiving tray, and being provided in the burner opening. Item 9. A stove provided with the burner according to Item 7, wherein the claw body of the virtue is disposed at a position corresponding to an upper portion of a short slit of the burner.