JP2001201016A - Burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a burner for a cooking device having a high thermal efficiency and having a wide variable range of a combustion amount. SOLUTION: First flame port grooves 10 are arranged in a radial manner at a lower surface of a flame port block 7 having a shape of a frustum of circular cone. Second flame port grooves 11 are arranged at an upper surface of the block. The flame port grooves 11 are arranged at a location except just above the first flame port grooves 10, thereby igniting a large amount of combustion stably by a thin-type and compact burner and realizing an upward flame to assure a high thermal efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner for a cooking appliance using gas or the like as fuel.

[0002]

2. Description of the Related Art Conventionally, a burner of this type is disclosed in
There was one described in Japanese Patent No. 0533.
As shown in FIG. 5, in this burner, a cap-shaped upper flame opening tooth mold 53 is placed on a lower flame opening tooth mold 52 so as to extend along the circumferential surface of the body of the burner body 51 in the circumferential direction. Further, a secondary air port 54 is provided between the upper and lower flame molds 52, 53,
It is intended to achieve good combustion with a high heat value without increasing the outer diameter of the burner 51 main body.

Another conventional burner is disclosed in Japanese Unexamined Patent Application Publication No. 10-3
There was the one described in Japanese Patent Publication No. 0806.
As shown in FIG. 6, this burner is provided at the upper end of a mixing pipe 61 provided substantially vertically, a cylindrical upper pressure equalizing chamber 63 having a large number of upper flame opening tooth molds 62 arranged on the outer peripheral edge, and a mixing pipe 61 for the mixing pipe 61. A side pressure equalizing chamber 66, which is provided annularly around and communicates with the mixing pipe 61 through an opening 64 formed on the side of the mixing pipe 61, and has a number of lower flame opening tooth molds 65 arranged on an outer peripheral edge thereof, is provided. When the amount is small, a resistor 67 is provided at the entrance of the upper pressure-equalizing chamber 63 so that the gas flows only into the upper pressure-equalizing chamber 63, and the gas amount adjustment width is increased.

[0004]

However, in the conventional burner, the upper flame-type tooth mold 53 is placed on the lower flame-type tooth form 52, and the secondary flame is formed between the upper and lower flame-type tooth forms 52, 53. Since the air port 54 is provided, the upper and lower flame port tooth molds 52 and 53 are provided.
The height of the secondary air port 54 and the height of the burner not only increase the overall thickness of the burner, but also complicate the overall configuration of the burner. It is necessary to increase the depth or to increase the virtues. As a result, the distance between the lower flame opening tooth mold 52 and the object to be heated, such as a pot, is increased, and there is a problem that high thermal efficiency cannot be obtained. .

[0005] In another conventional burner, the upper flame opening tooth mold 62 of the upper pressure equalizing chamber 63 is placed on the lower flame opening tooth mold 65 of the side pressure equalizing chamber 66. Since a space for providing the resistor 67 is necessary in the 63, the entire burner also has a thick and complicated structure, and the depth of the plate must be increased and the virtue must be increased. There has been a problem that the distance between the mouth mold 65 and the object to be heated such as a pan cannot be reduced, and high thermal efficiency cannot be obtained. Further, the configuration of the resistor 67 must be made to correspond to the type of the fuel gas, and there is a problem that the gas type conversion becomes complicated.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and achieves stable combustion with a large amount of combustion without increasing the burner diameter and the thickness of the burner, and high heat efficiency when applied to a cooking device such as a stove. The primary objective is to secure. It is a second object of the present invention to provide a burner for a cooker which has a simple configuration and is capable of adjusting a wide range of gas amount from a large combustion amount to a small combustion amount.

[0007]

According to the present invention, in order to attain the above-mentioned first object, a first burner groove is provided on a lower surface side of a burner main body having a fuel gas mixing chamber. Place a flame port body provided with a second flame port groove substantially radially on the upper surface side,
The broth shield is placed on the upper surface of the flame port body, and the first flame port groove and the second flame port groove communicate with the mixing chamber.

According to the invention, the first flame groove is provided substantially radially on the lower surface of the flame body and the second flame groove is substantially radially formed on the upper surface, and the boiling shield is provided on the upper surface of the flame body. Since the flame groove is concentrated only on a single flame body, the first flame groove and the second flame groove can be brought close to each other, so that the burner diameter and the thickness of the burner are reduced. It is possible to stably burn a large amount of combustion with a compact burner. Therefore, when using the burner of the present invention as a heating source of a cooking device such as a stove, without increasing the distance between the burner and the object to be heated,
High thermal efficiency can be secured.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a burner main body in which a fuel gas mixing chamber is formed, a burner body mounted on the burner main body, and a burner body mounted on the upper surface of the burner body. Comprising a boiled juice shield body, a first flame slot is provided substantially radially on the lower surface side of the flame port body, and a second flame port groove is provided substantially radially on the upper surface side of the flame port body, And the second flame channel is communicated with the mixing chamber.

[0010] Since the first and second flame grooves can be concentrated only on a single flame body, the first and second flame grooves can be brought close to each other. The burner diameter and the thickness of the burner can be reduced, and a large burn amount can be stably burned with a compact burner. Therefore, when used as a heating source for a cooking device such as a stove, a high thermal efficiency can be ensured without increasing the distance between the burner and the object to be heated.

According to a second aspect of the present invention, the burner body has the second burner groove disposed so as not to be directly above the first burner groove.

[0012] And, by arranging the second flame groove so as not to be directly above the first flame groove, a secondary air passage is secured between the adjacent first flame grooves, and the second flame groove is provided. Since the secondary air can be supplied to the lower part of the flame groove, the combustion with reduced flame can be ensured even if the first flame groove and the second flame groove are close to each other.

According to a third aspect of the present invention, the burner body has the bottom surface of the second burner groove provided below the upper surface of the first burner groove.

Further, it is possible to dispose a second burner groove between the adjacent first burner grooves. In an extreme case, the cross section of the burner groove can be close to a corrugated plate shape. It is possible to achieve stable combustion with the amount of combustion, and conversely, it is possible to further reduce the thickness of the flame port body.

According to a fourth aspect of the present invention, there is provided a fuel injector in which a space communicating with each other between a plurality of adjacent first flame slots or between a plurality of adjacent second flame slots is provided. It is provided.

[0016] By providing a space communicating with each other between the first and second flame opening grooves, the space functions as a stagnation region of the fuel gas, and a large combustion amount is reduced to a small combustion amount. When the throttle is narrowed, in the flame slot corresponding to the outlet of the stagnation region, the fuel gas is gradually supplied from the stagnation region, so that an embers can be formed, and the flame is transferred to the other misfiring flame slot and stable. A small flame can be secured.

According to a fifth aspect of the present invention, the outer diameter of the upper surface portion of the flame opening body is smaller than the outer diameter of the lower surface portion.

Since the upper surface of the flame opening body is smaller in diameter than the lower surface portion, a flame holding space can be formed between the second flame opening groove and the boiling shield, and a small amount of combustion can be achieved. Stable combustion can be ensured.

According to a sixth aspect of the present invention, the flame opening body is constituted by an inclined surface having a rectangular surface portion inclined in an outer peripheral direction from an upper portion to a lower portion.

By inclining the rectangular surface of the flame opening body from the upper part to the lower part in the outer peripheral direction, the inclination of the flame tends to be upward, the heat concentration can be promoted, and high thermal efficiency can be secured.

According to a seventh aspect of the present invention, the rectangular surface portion of the burner body is formed in a two-step substantially cylindrical shape so that the outer diameter of the lower surface of the burner body is larger than that of the upper surface. It is constituted by a two-stage substantially frustoconical rectangular surface or a two-stage substantially frustum-shaped rectangular surface.

Further, since a gap is formed between the upper surface of the lower portion and the boiling shield, the flame holding can be improved, and stable combustion with a small amount of combustion can be ensured.

[0023] In the invention according to claim 8, the broth shield has a space provided on a surface facing the second flame groove of the flame body.

Further, the space formed in the broth shield functions as a stagnation space, and it is possible to secure stable combustion with a small amount of combustion. By combining with the space provided in the second flame opening groove, smaller combustion can be achieved. Stable combustion in quantity is possible.

According to a ninth aspect of the present invention, the outer diameter of the boiling shield is equal to or larger than the outer diameter of the lower surface of the flame opening body.

When viewed from the top, the boiled shield covers the entire flame opening, and it is possible to prevent fallen objects such as boiled juice from entering the flame opening.

[0027]

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

(Embodiment 1) The invention of Embodiment 1 will be described with reference to FIG. FIG. 1A is a sectional view of a main part of the burner of the present embodiment, FIG. 1B is a front view of a burner body of the burner, and FIG. 1C is a top view of the burner body of the burner.

In FIG. 1, reference numeral 1 denotes a burner main body, which is made of a heat-resistant metal, and has a fuel gas mixing pipe 2, an inner peripheral wall 3 and an outer peripheral wall 4.
The annular mixing chamber 5 formed as described above is integrally formed, and a space surrounded by the inner peripheral wall 3 forms a penetrating air passage 6. Reference numeral 7 denotes a flame port body formed into a substantially truncated conical shape by brass forging, aluminum ingot casting, ceramics molding, or the like. The center of the flame port 7 is fitted to the inner peripheral wall 3. There is one opening cylinder 8, the lower surface of the outer peripheral portion of the flame port body 7 is almost in close contact with the outer peripheral wall 4 of the mixing chamber 5, and the rectangular surface of the flame port body 7 is inclined in the outer peripheral direction from the upper part to the lower part. Surface 9 is constituted.

On the lower surface of the outer peripheral portion of the flame port body 7, a plurality of first flame port grooves 10 are provided radially and upward from the center.
Similarly, a large number of second flame port grooves 11 having a shallower depth than the first flame port groove 10 are provided radially and upward on the upper surface. Further, the second burner groove 11 is disposed at a position avoiding directly above the first burner groove 10.
The vertical relationship between 0 and the second flame slot 11 is close to each other. The cross-sectional shape of each of the first and second flame slots 10 and 11 with respect to the fuel gas ejection direction may be rectangular or substantially V-shaped.

On the other hand, on the upper surface of the flame port body 7, the second flame port groove 1 is provided.
1 is shielded so as to shield the upper part of the nozzle body 1 from the outer diameter of the lower surface portion of the flame mouth body 7 by about 1 to 2 mm. A second opening tube 13 that fits into the first opening tube 8 is formed.
The broth shield 12 is made of the same material as the flame port body 7 and is configured to be detachable from the flame port body 7 or the flame port body 7.
Any of the configurations of fitting and fixing to is possible.

Around the first opening cylinder 8 of the flame opening body 7, a plurality of oblong openings are provided so that the first flame opening groove 10 and the second flame opening groove 11 are mixed. It is configured as a communication port 14 for communicating with the chamber 5. Further, on the inclined surface 9, the outlet opening of the first flame hole groove 10 formed by the close contact between the flame body 7 and the outer peripheral wall 4 of the mixing chamber 5 is connected to the first flame port 1.
5 and the outlet opening of the second burner groove 11 formed by close contact between the burner body 7 and the broth shield 12
It is 6.

Next, the operation and function will be described. The fuel gas is sucked through the mixing pipe 2 and diffuses uniformly into the mixing chamber 5, depending on the opening area of the first flame port 15 and the second flame port 16. Part of which passes through the first flame slot 10,
The rest passes through the second flame slot 11 via the communication port 14. At this time, the flame is ignited by some ignition means (not shown), and a flame is formed in two stages at the first flame port 15 and the second flame port 16, respectively, along the taper of the inclined surface 9 of the flame port body 7. Thus, a flame band is formed radially and upward.

The combustion air that diffuses from the surroundings of the flame zone into the flame zone as an ascending air current first diffuses into the flame formed by the first flame port 15, but the second flame port groove 11 Since it is arranged at a position avoiding directly above one flame port groove 10, some combustion air can pass between adjacent first flame ports 15, and from the lower part of the second flame port 16, 2nd flame 16
It diffuses as combustion air in the flame formed by Therefore, not only the interference between the flames formed by the adjacent first flame ports 15 is suppressed, but also the interference between the flames formed by the adjacent second flame ports 16 is suppressed. Since the interference between the flame formed by the port 15 and the flame formed by the second flame port 16 can be suppressed, a combustion state in which the flame is shortened can be realized.

The other combustion air flowing through the air passage 6 of the burner main body 1 as an ascending airflow passes through the second opening cylinder 13 and diffuses into the above-mentioned flame zone. Combustion air flows in such a way as to pinch it, thus exhibiting a synergistic effect with the effect of suppressing the interference of the above-mentioned flames, further shortening the entire flame zone, raising the temperature to higher flames, and further realizing a flame directed directly upward it can.

Between the lower part of the outer peripheral portion of the broth shield 12 and the second flame opening 16, an upward flame is applied to the broth shield 12.
Stagnation is likely to occur on the lower portion of the gas, and the flame holding property is improved, so that a stable flame is formed even in a gas which is likely to blow off. Therefore, a burner for a cooker that can stably burn a large amount of fuel gas and that ensures efficient heat transfer with little heat dissipation can be realized.

(Embodiment 2) The invention of Embodiment 2 will be described with reference to FIG. 2A is a cross-sectional view of a main part of the burner of the present embodiment, FIG. 2B is a front view of a burner body of the burner, and FIG. 2C is a top view of the burner body of the burner.

The present embodiment is different from the first embodiment in that the bottom surface of the second flame port groove 22 of the flame port body 21 is provided at a position below the upper surface of the first flame port groove 10 and the flame port body 21 The outlet opening of the second flame groove 22 formed by close contact between the flame body 21 and the juice shield 12 on the inclined surface 23 of the second flame hole 24
The point is. The components having the same reference numerals as those in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation and operation will be described. The flame zone is formed by the inclined surface 23 of the flame opening body 21 as in the first embodiment, but the bottom surface of the second flame opening groove 22 is formed by the first flame. Groove 10
Is located below the position of the upper surface of the
Large opening area. Therefore, the amount of combustion can be increased in accordance with the increase in the area of the flame port.

In such a configuration, as in the first embodiment, the second flame port groove 22 is disposed at a position avoiding immediately above the first flame port groove 10, so that the second flame port groove 22 is provided at each flame port. The effect of suppressing interference between the flames can be secured, and it is possible to shorten the entire flame zone, increase the temperature of the flame, and furthermore, realize a flame directed upward. Therefore, stable combustion of a large amount of combustion can be performed without increasing the size of the burner, and at the same time, the diameter of the burner or the thickness of the inclined surface 23 can be reduced according to the amount of combustion. Burners can also be realized.

(Embodiment 3) The invention of Embodiment 3 will be described with reference to FIG. FIG. 3A is a sectional view of a main part of the burner of the present embodiment, FIG. 3B is a front view of a burner body of the burner, and FIG. 3C is a top view of the burner body of the burner.

This embodiment is different from the first and second embodiments in that the rectangular surface portion of the flame port body 31 has a two-stage substantially frustoconical shape so that the outer diameter of the lower surface of the flame port body 31 is larger than the upper surface. A first flame slot 33 is provided on the lower surface of the lower truncated cone 32, and a second flame groove 35 is provided on the upper surface of the upper truncated cone 34 having a small diameter.
The outlet opening of the first flame opening groove 33 formed by close contact between the first flame opening groove 33 and the outer peripheral wall 4 of the mixing chamber 5 is defined as a first flame opening 36, and is formed by close contact between the flame opening body 31 and the boiling shield 12. The point that the outlet opening of the second flame port groove 35 to be formed is set to the second flame port 37. The components having the same reference numerals as those of the first and second embodiments have the same structure, and the description is omitted.

Next, the operation and function will be described. As in the first and second embodiments, the second flame port groove 35 is disposed at a position other than immediately above the first flame port groove 33. In addition, the effect of suppressing interference between the flames at each flame outlet can be ensured, and it is possible to realize a short flame, a high-temperature flame, and a flame directed right above the entire flame zone. On the other hand, due to the gap formed between the lower portion of the outer peripheral portion of the boiling juice shield 12 and the upper portion of the lower truncated cone 32, the flame formed by the second flame port 37 has good flame holding properties, and blows off. Stable combustion can be ensured even in the case of easy fuel gas or when the thermal power is reduced to a small amount of combustion. Therefore, a cooking burner with a wide range of variable heating power can be realized.

(Embodiment 4) The invention of Embodiment 4 will be described with reference to FIG. FIG. 4A is a cross-sectional view of a main part of the burner of this embodiment, and FIG. 4B is a top view of a flame port body of the burner.

The present embodiment is different from the first to third embodiments in that a first space portion 43 communicating with each other between a plurality of adjacent second flame slots 42 on the upper surface of the flame port body 41 is formed. A second space 45 is provided on a surface of the boiling shield body 44 facing the second flame groove 42 of the flame opening body 41, and the first space 43 and the second space 45 are mutually connected. The second flame outlet 46 is defined as an outlet opening of the second flame groove 42 which is opposed to the second flame opening groove 42 formed by the close contact between the flame mouth body 41 and the boiling juice shield 44. The components having the same reference numerals as those of the first to third embodiments have the same structure, and the description is omitted.

Next, the operation and the operation will be described. As in the first to third embodiments, the second flame opening groove 42 is disposed at a position avoiding immediately above the first flame opening groove 10. In addition, the effect of suppressing interference between the flames at each flame outlet can be ensured, and it is possible to realize a short flame, a high-temperature flame, and a flame directed right above the entire flame zone.

On the other hand, in the first space portion 43 and the second space portion 45 formed between the flame opening body 41 and the boiling juice shielding body 44, the fuel gas flowing into the second flame opening groove 42 is formed. It functions as a stagnation space in which the flow velocity suddenly drops. In particular, when the combustion amount is rapidly reduced from the large combustion amount to the small combustion amount, the decrease in the primary air amount cannot catch up with the decrease in the gas amount, and a temporary misfire occurs in some of the flames, for example, the first flame 15, At the second flame port 46 corresponding to the outlet of the stagnation region of the first space 43 and the second space 45, the fuel gas is gradually supplied from the stagnation region, so that an embers can be formed, and the primary air At the stage where the amount is stabilized, the flame is transferred to the misfired first flame port 15 to secure a stable small flame. In particular, by providing both the first space 43 and the second space 45, the effect as a stagnation region can be enhanced. Therefore, a cooking burner with a wide range of variable heating power can be realized.

[0048]

As is apparent from the above embodiment, according to the first aspect of the present invention, the first flame groove and the second flame groove are concentrated on only a single flame body, and Since the burner groove and the second burner groove can be brought close to each other, the burner diameter and the thickness of the burner can be reduced, and a large burn amount can be stably burned with a compact burner. Therefore, when used as a heating source for a cooking device such as a stove, a high thermal efficiency can be ensured without increasing the distance between the burner and the object to be heated.

According to the second aspect of the present invention, a secondary air passage can be secured between the adjacent first burner grooves, and the secondary air can be supplied to a lower portion of the second burner groove. Therefore, even if the first flame opening groove and the second flame opening groove are close to each other, it is possible to secure combustion with reduced flame.

According to the third aspect of the present invention, it is possible to dispose the second flame port groove between the adjacent first flame port grooves, and it is possible to perform stable combustion with a large combustion amount. Or, conversely, the thickness of the flame port body can be reduced.

According to the fourth aspect of the present invention, the space functions as a fuel gas stagnation region, a stable small flame can be secured even with a small combustion amount, and a wide combustion amount variable range can be secured. it can.

According to the fifth aspect of the present invention, a flame holding space can be formed between the second flame opening groove and the broth shield, and stable combustion with a small amount of combustion can be ensured.

According to the invention of claim 6, the inclination of the flame tends to be upward and the concentration of heat can be promoted, so that high thermal efficiency can be secured.

According to the seventh aspect of the invention, good flame holding can be achieved, and stable combustion with a small amount of combustion can be ensured.

According to the eighth aspect of the present invention, the space functions as a stagnation space, it is possible to ensure stable combustion with a small amount of combustion, and by combining with the space provided in the second flame slot,
Further, stable combustion with a small amount of combustion is possible.

Further, according to the ninth aspect of the present invention, the boiling shield covers the entire flame opening from the upper surface, and it is possible to prevent a fallen object such as boiling juice from entering the flame opening.

[Brief description of the drawings]

FIG. 1A is a sectional view of a main part of a burner according to a first embodiment of the present invention. FIG. 1B is a front view of a burner body of the burner. FIG. 1C is a top view of a burner body of the burner.

2A is a sectional view of a main part of a burner according to a second embodiment of the present invention. FIG. 2B is a front view of a burner body of the burner. FIG. 2C is a top view of a burner body of the burner.

3A is a sectional view of a main part of a burner according to a third embodiment of the present invention. FIG. 3B is a front view of a burner body of the burner. FIG. 3C is a top view of a burner body of the burner.

FIG. 4A is a cross-sectional view of a main part of a burner according to a fourth embodiment of the present invention. FIG.

FIG. 5 is a sectional view of a main part of a conventional burner.

FIG. 6 is a sectional view of a main part of another conventional burner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Burner main body 5 Mixing chamber 7,21,31,41 Flame mouth body 9 Inclined surface 10,33 First flame mouth groove 11,22,35,42 Second flame mouth groove 12,44 Boiled shield 14 Communication port 15, 23 Opening cylinder 32 Lower truncated cone 34 Upper truncated cone 43 First space part 45 Second space part

Claims (9)

[Claims] 1. A burner body having a fuel gas mixing chamber formed therein, a flame mouth body mounted on the burner body, and a boiling juice shield body mounted on an upper surface of the flame mouth body, A first burner groove is provided substantially radially on the lower surface side of the mouth body, a second burner groove is provided substantially radially on the upper surface side of the burner body, and the first burner groove and the second burner port are provided. A burner having a groove communicating with the mixing chamber. 2. The burner according to claim 1, wherein the burner body has a second burner groove disposed so as not to be directly above the first burner groove. 3. The flame nozzle body according to claim 1, wherein the bottom surface of the second flame groove is provided at a position lower than the upper surface of the first flame groove.
The burner described in. 4. The flame port body has a space communicating with each other between a plurality of adjacent first flame ports or between a plurality of adjacent second flame ports. The burner according to any one of the preceding claims. 5. The burner according to claim 1, wherein an outer diameter of the upper surface portion of the flame opening body is smaller than an outer diameter of the lower surface portion. 6. The burner according to claim 5, wherein the flame opening body is constituted by an inclined surface having a rectangular surface portion inclined in an outer peripheral direction from an upper portion to a lower portion. 7. The flame port body may be formed such that a rectangular surface portion of the flame port body has a two-stage substantially cylindrical shape or a two-stage substantially frusto-conical shape so that the outer diameter of the lower surface is larger than the upper surface. 6. The burner according to claim 5, wherein the burner is constituted by a rectangular surface of a rectangular shape or a two-stage substantially truncated pyramidal rectangular surface. 8. The broth shield according to any one of claims 1 to 7, wherein a space is provided on a surface of the flame mouth body facing the second flame groove.
Burner according to item. 9. The burner according to claim 1, wherein the outer diameter of the boiling shield is equal to or larger than the outer diameter of the lower surface of the flame opening body.