JP2001004108A - Gas burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the propagation of broth to flame ports and prevent the clogging of the same, by a method wherein an eave-type dam for precluding the flow-down of the broth stayed on the top surface of a burner from the outer peripheral rim of the same is formed on the outer periphery of the top surface of the gas burner provided with flame ports formed on the outside surface of a burner main body, which is extended substantially vertically. SOLUTION: The burner main body 1 of a gas burner A is provided with a cylindrically and substantially vertically formed outside surface while a multitude of flame ports 3 are bored obliquely upward on the outside surface with the angle of inclination θof about 60 degrees so as to be arrayed along the peripheral direction of the same. the flame ports 3 are constituted of main flame ports 3 for big flame, which are located at the upper part of the outside surface, and small flame ports 3b for small flame which are effecting heat retaining function principally and located on the lower part of the outside surface. A cap 11 is disposed on a burner base 10 of the burner main body 1. In such a gas burner A, an eave-type dam 5 is formed on the outer peripheral part of the burner top surface 4. According to this constitution, broth stayed on the burner top surface 4 is precluded from flowing down from the outer peripheral rim to prevent the clogging of the flame ports 3 by the broth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burner, and more particularly to a gas burner. The present invention relates to a technique for avoiding clogging of a flame hole.

[0002]

2. Description of the Related Art Conventionally, in a gas burner in which a flame hole is formed on the top surface of a burner body, heating can be sufficiently performed by heating from the top surface to increase the heating efficiency. It is easy to close the flame hole by the boiling water.

[0003] Therefore, the outer surface of the burner body is formed substantially vertically, a flame hole is formed in the substantially vertical outer wall, and the combustion gas burning in the flame hole of the outer wall is directed upward along the outer wall surface. A gas burner that enhances the heating efficiency by utilizing this fact (the Coanda effect) has been considered and proposed.

[0004] Even in such a gas burner in which a flame hole is formed on a substantially vertical outer wall, there is a possibility that the boiling liquid may hang down from the top surface of the burner body and block the flame hole.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-described problems. It is an object of the present invention to provide a gas burner capable of preventing clogging of a flame hole due to spilling over a flame hole formed on a substantially vertical outer surface.

[0006]

According to the first aspect of the present invention, there is provided a gas burner in which a flame hole communicating from a space in a burner body having a substantially vertical outer surface to a substantially vertical outer surface of the burner body. The eaves-shaped weir 5 is formed on the outer peripheral portion of the burner top surface 4 to prevent the broth retained on the burner top surface from flowing down from the outer peripheral edge. According to such a configuration, the flame holes 3 are formed on the substantially vertical outer surface of the burner main body 1, and the combustion gas is raised along the substantially vertical outer surface by utilizing the Coanda effect to increase the combustion efficiency. However, since the eaves-shaped weir 5 is provided on the outer peripheral portion of the burner top surface 4, it is possible to prevent the broth dripped on the burner top surface 4 from flowing down to the outer wall, and to be substantially vertical It is possible to prevent the flame holes 3 formed on the outer wall from being blocked by the boiling water.

According to a second aspect of the present invention, the eaves-shaped weir 5 is provided with a notch 7 for extracting the broth at a position avoiding the flame hole 3 in plan view. According to such a configuration, the boiled liquid is cut off by the notch 7 to form an eave-shaped weir 5.
Does not block the flame hole 3 even if the water overflows and flows down the outer surface of the burner main body 1.

According to a third aspect of the present invention, the outer surface of the eave-shaped weir 5 is formed as an arc surface 6 projecting outward. According to such a configuration, even though the eave-shaped weir 4 is formed, the flame can be wrapped around the arc surface, and the heating efficiency can be further enhanced.

According to a fourth aspect of the present invention, the flame hole 3 is provided with a main flame hole 3a for heat combustion and a small flame hole 3b for heat insulation combustion. According to such a configuration, not only the main flame hole 3a for heating and combustion, but also the small flame hole 3b for heat-retention combustion is not blocked by the boiling water, and the heat-retention combustion in the small flame hole 3b is not performed. Function can be enhanced.

According to a fifth aspect of the present invention, the internal weir 9 is formed at the upper edge of the central hole 13 formed at the center of the burner main body 1 and opened at the center of the burner top surface 4. Is what you do. According to such a configuration, it is possible to prevent the boiling juice from flowing into the central hole 9 of the burner main body 1.

[0011]

Embodiments of the present invention will be described below. 1 is a schematic sectional view, FIG. 2A is a schematic plan view, and FIG. 2B is a schematic side view.

The burner main body 1 of the gas burner A is formed in a circular shape and has an outer surface formed substantially vertically. A large number of flame holes 3 are provided in a row in the circumferential direction on the outer side surface. Burner body 1
Is formed by mounting a burner cap 11 on a burner base 10. A flame hole 3 is formed so as to penetrate the outer surface of the burner body 1 and the space 2 in the burner body 1. The flame hole 3 forms an inclination angle θ of about 60 degrees diagonally upward,
Further, the flame hole 3 is formed long in the horizontal direction.

The flame hole 3 is composed of an upper main flame hole 3a for a large fire and a lower lower flame hole 3b for a small fire mainly serving as a heat retaining function. The space 2 inside the burner main body 1 is divided into a main space 2a communicating with the main flame hole 3a and a small space 2b communicating with the small flame hole 3b. The main mixing tube 14a is connected to the main space 2a, and the small mixing tube 14b is connected to the small space 2b. Nozzles are provided at the inlets of the mixing tubes 14a and 14b.

In the gas burner A, the primary air is mixed at the inlets of the mixing pipes 14a and 14b with the supply of the fuel gas. The fuel is ejected upward with the inclination angle θ, and the secondary air is mixed and burned at the flame hole 3 to form a flame. This flame becomes a thin film having a width in the horizontal direction and is directed upward along the vertical outer surface of the burner main body 1 by the Coanda effect. The flame has an outer flame and an inner flame. When the flame is directed upward as described above, when the cooking utensil 12 is placed on the burner main body 1 and heated, the flame hits substantially vertically toward the bottom surface of the cooking utensil 12 and hits a side near the center of the cooking utensil 12, The cooking utensil 12 can be heated efficiently.

In the gas burner A as described above, the present invention, as shown in FIG. 1, employs an eave for preventing the broth retained on the burner top surface 4 from flowing down from the outer periphery to the outer periphery of the burner top surface 4. A weir 5 is formed. Thus, the flame holes 3 are formed on the substantially vertical outer surface of the burner main body 1, and the combustion gas is raised along the substantially vertical outer surface by utilizing the Coanda effect to increase the combustion efficiency. Since the eaves-shaped weir 5 is provided on the outer peripheral portion of the burner top surface 4, it is possible to prevent the boiling juice dropped on the burner top surface 4 from flowing down to the outer side wall, and to form a substantially vertical outer wall. It is possible to prevent the burned flame hole 3 from being blocked by boiling water.

As shown in FIG. 2, the flame holes 3
A notch 7 for extracting the broth is provided in the eave-shaped weir 5 at a position avoiding the above. The burner body 1 communicates with the notch 7.
A guide groove 8 is formed on the outer surface of the burner main body 1 to the lower end of the burner main body 1. Thus, even if the broth overflows the eaves-shaped weir 5 due to the notch 7 and flows down the outer surface of the burner main body 1, it flows down the guide hole 8 avoiding the flame hole 3.
It does not block the flame hole 3.

The flame hole 3 is provided with a main flame hole 3a for heating and combustion and a small flame hole 3b for warming and burning. Not to mention the main flame hole 3a for heating and burning, a small flame for warming and burning. The hole 3b is not blocked by the boiling water, and the small flame hole 3
(b) can maintain the warming combustion function for a long period of time.

Incidentally, the outer peripheral surface of the eaves-shaped weir 5 is formed on an arc surface 6 protruding outward, so that the flame goes around the arc surface even though the eaves-shaped weir 4 is formed. Can be
The heating efficiency can be further improved (FIG. 3).
reference).

Since the flame hole 3 is provided with a main flame hole 3a for heating and combustion and a small flame hole 3b for warming combustion, it goes without saying that the main flame hole 3a for heating and burning is used. Small flame hole 3
Even in b, it is not blocked by the broth,
The function of keeping warm combustion in the small flame holes 3b can be enhanced.

FIG. 4 shows another embodiment in which an eave-shaped weir 5 is provided.
The overhang to the burner body 1 is increased, and the outer surface of the eave-shaped weir 5 and the outer surface of the burner body 1 are connected by a gentle curved surface. In the present embodiment, the eave-shaped weir 5 extends about several millimeters, and the formation of the flame A accompanying the ejection of the combustion gas from the flame hole 3 and the Coanda effect in which the flame A rises along the outer wall are considered. Since the eaves-shaped weir 5 is not hindered but protrudes from the outer wall in plan view, it is possible to prevent the spread of boiling juice and dust to the flame hole 3.

FIG. 5 shows still another embodiment, in which an internal weir 9 is formed at the periphery of a central hole 13 formed at the center of the burner main body 1 and opening at the center of the burner top surface 4. It is. Thus, the broth can be prevented from flowing into the central hole 13 of the burner main body 1.

[0022]

According to the first aspect of the present invention, there is provided a gas burner having a flame hole communicating from a space in the burner main body having a substantially vertical outer surface to a substantially vertical outer surface of the burner main body,
An eave-shaped weir is formed on the outer periphery of the burner top to prevent the broth staying on the burner top from flowing down from the outer periphery, so a flame hole is formed on the outer surface that is almost vertical to the burner main body. While using the Coanda effect to increase the combustion gas along the substantially vertical outer surface to increase the combustion efficiency,
Since an eave-shaped weir is provided on the outer peripheral portion of the burner top surface, it is possible to prevent the boiling juice dropped on the burner top surface from flowing down to the outer wall, and a flame hole formed on a substantially vertical outer wall. There is an advantage that occlusion can be prevented from being blocked by boiling water.

In the second aspect, the notch for guiding the broth is provided in the eave-shaped weir at a position avoiding the flame hole in a plan view. In addition to the effect of the first aspect, the notch allows the broth to be cut. Even if it overflows the eaves-shaped weir and flows down the outer surface of the burner body, it does not block the flame holes.

According to the third aspect, since the outer peripheral surface of the eave-shaped weir is formed as an arc surface projecting outward, it can be said that an eave-shaped weir is formed in addition to the effect of the first aspect. There is an advantage that the flame can be wrapped around the arc surface and the heating efficiency can be further enhanced.

According to the fourth aspect, the flame hole is provided with a main flame hole for heating combustion and a small flame hole for keeping heat combustion. Needless to say, there is an advantage in that the small flame hole for keeping warm combustion is not blocked by the boiling water, and the function of keeping warm combustion in the small flame hole can be maintained for a long time.

According to a fifth aspect of the present invention, an internal weir is formed around the upper edge of a central hole formed at the center of the burner body and opened at the center of the burner top surface. In addition, there is an advantage that the boiling juice can be prevented from flowing into the central hole of the burner body.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing one embodiment of the present invention.

FIG. 2A is a schematic plan view of the same, and FIG. 2B is a schematic side view.

FIG. 3 is a schematic perspective view of the same.

FIG. 4 is a schematic sectional view of another embodiment of the above.

FIG. 5 is a schematic sectional view of still another embodiment of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Burner main body 2 Space 3 Flame hole 4 Burner top surface 5 Eave-shaped weir 6 Arc surface 7 Notch

Claims (5)

[Claims] 1. A gas burner having a flame hole communicating from a space in a burner main body having a substantially vertical outer surface to a substantially vertical outer surface of the burner main body, wherein the burner top surface is formed on an outer peripheral portion of the burner top surface. A gas burner characterized by forming an eave-shaped weir for preventing boiling water retained on the upper surface from flowing down from an outer peripheral edge. 2. The gas burner according to claim 1, wherein the eave-shaped weir is provided with a notch for extracting the broth at a position avoiding the flame hole in plan view. 3. The gas burner according to claim 1, wherein an outer peripheral surface of the eave-shaped weir is formed as an arc surface protruding outward. 4. The gas burner according to claim 1, wherein the flame holes are provided with a main flame hole for heating combustion and a small flame hole for keeping heat combustion. 5. The gas burner according to claim 1, wherein an internal weir is formed at a peripheral portion of an upper edge of a central hole formed at a central portion of the burner main body and opening at a central portion of the burner top surface.