JP2004251504A - Burner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a burner for securing high heating efficiency by ensuring even heating distribution without generating red flame due to incomplete combustion and suppressing unevenness of heat-transfer to a cooking utensil. <P>SOLUTION: The burner has ignition flame hole parts 222 consisting of flame holes 222a for ignition and flame holes 222b for keeping flame equipped at both sides of the flame holes 222a for ignition between a burner base 11 and an outer peripheral part of a ring shape burner cap 20 and base points A, B of a direction of an opening of the flame hole on an extension line for extending a line for connecting the flame hole 222a for ignition and a ring center O of the burner cap 20 to an opposite direction of the flame hole 222a for ignition from the ring center O, irregularly arranged flame hole parts 226 which are provided adjacently on both sides of the ignition flame hole part 222 and a radially arranged flame hole part 224 of which ring center O of the burner cap 20 is set at the base points in the opening direction of the flame hole. The base points A, B in the opening direction of the flame hole of the irregularly arranged flame hole parts 226 are provided in a predetermined region on the extended line where an opening angle of the flame hole is equal to or larger than the opening angle of the flame hole 222b for keeping flame. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a burner including a burner base and an annular burner cap provided on the burner base.
[0002]
[Prior art]
Conventionally, as a burner of this type, an ignition flame port comprising an ignition flame port and a flame holding flame port is provided between a burner base and an outer peripheral portion of an annular burner cap provided on the burner base. There is known a burner including an irregular arrayed flame port on both sides adjacent to the flame port, and a radial arrayed flame port whose base point in the opening direction of the flame port is provided at the annular center of the burner cap (for example, Patent Document 1).
[0003]
The base point in the opening direction of the flame port of the irregular array flame port is disposed on an extension line extending from the annular center point to the opposite side of the flame port for ignition from a connection line connecting the flame port for ignition and the annular center of the burner cap. I have. The opening angle between the opening direction of the flame port of the irregularly arranged flame port section and the connection is smaller than the opening angle of the flame holding port of the ignition flame port section.
[0004]
The burner is formed such that the flame formed at the irregularly arranged flame approaches the ignition flame. For this reason, according to the burner, a uniform heating distribution is realized by suppressing a decrease in the heating distribution at the ignition flame port, and a high heating efficiency is secured by suppressing uneven heat transfer to a pot or the like.
[0005]
However, in this burner, since the flame formed by the ignition flame port and the irregularly arranged flame port approach each other, the flame of the irregularly arranged flame port and the flame of the flame holding crater interfere with each other, resulting in incomplete combustion ( There is a problem that a red fire is generated due to insufficient secondary air) and a good combustion state cannot be maintained.
[0006]
[Patent Document 1]
JP-A-2002-295813 (FIGS. 1 and 5)
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above background, by making the heating distribution uniform without the occurrence of red fire due to incomplete combustion (lack of secondary air), to suppress uneven heat transfer to cooking utensils, An object is to provide a burner that ensures high heating efficiency.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the burner of the present invention is provided between a burner base and an outer peripheral portion of an annular burner cap provided on the burner base, and is provided on both sides of the ignition flame and the ignition flame. The opening of the flame opening on an extension line extending from the annular center to the opposite side of the ignition flame from a connection line connecting the ignition flame and the flame center for the burner cap, the line connecting the ignition flame and the annular center of the burner cap. In a burner provided with a base point in the direction, an irregularly arranged flame port on both sides adjacent to the ignition flame port, and a radiating array flame port in which the annular center of the burner cap is set as the base point in the opening direction of the flame port, The angle between the connection and the opening direction of the flame port is defined as the opening angle of the flame port, and the base point of the opening direction of the flame port of the irregularly arranged flame port portion is defined as the opening angle of the flame port for flame holding. It is provided within a predetermined range on the extension line as described above, That.
[0009]
According to this configuration, the opening direction of the opening of the irregularly arranged flame port is closer to the ignition flame port as compared with the burner in which the opening points of all the flame ports are provided at the center of the ring. Therefore, a high heating efficiency can be obtained by suppressing a decrease in the heating distribution at the ignition flame opening, making the heating distribution more uniform, and suppressing uneven heat transfer to cooking equipment such as a pan. On the other hand, since the opening angle of the irregularly arranged flame opening is set to be larger than the opening angle of the flame holding flame outlet, the flame of the flame holding flame and the irregularly arranged flame do not interfere with each other and generate red fire. Good combustion is obtained.
[0010]
In the case where the irregularly arranged flame port has at least two flame ports of an inner flame port near the ignition flame port and an outer flame port adjacent to the flame port, the opening of the outer flame port is provided. It is preferable that the base point in the direction is located farther than the base point in the opening direction of the inner flame port with respect to the annular center of the burner cap within a predetermined range on the extension line. Accordingly, the opening direction of the outer flame port approaches the inner flame port side, which is advantageous in achieving uniform heating distribution and improving heating efficiency.
[0011]
Further, it is preferable that a base point in the opening direction of the outer flame port is provided at a position on the extension line such that an opening angle of the outer flame port becomes equal to an opening angle of the inner flame port.
[0012]
According to this invention, the opening direction of the outer flame port is inclined toward the ignition flame port side until the limit of maintaining the state in which the flames of the irregularly arranged flame port do not interfere with each other, so that the heating distribution is uniform, This is even more advantageous in improving the heating efficiency.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 is an overall view of a stove using the burner of the present embodiment, FIG. 2 is a bottom view of a burner cap, and FIG. 3 is a partially cutaway side view showing an ignition flame port.
[0014]
The burner shown in FIG. 1 includes a main body 10 having a substantially annular burner base 11, and an annular burner cap 20 mounted on the burner base 11. On the upper side of the main body 10, a virtue 30 having six substantially symmetric virtue claws 32 is arranged.
[0015]
A mixing tube 12 communicating with a burner base 11 is formed integrally with the main body 10. The nozzle 13 is connected to the end wall 122 of the mixing tube 12. From the nozzle 13, fuel gas and primary air taken in by an ejector effect from an opening 132 provided on the side wall thereof are supplied to the mixing pipe 12.
[0016]
A large number of tooth-shaped projections 21 that contact the burner base 11 are provided on the outer peripheral portion of the lower surface of the burner cap 20 at intervals in the circumferential direction, and the tooth profile is formed between the burner base 11 and the outer peripheral portion of the burner cap 20. A large number of flame openings 22 are formed in the circumferential direction by the projections 21.
[0017]
Further, the burner is provided in the vicinity of the outside of the burner base 11 to ignite the air-fuel mixture supplied from the flame port 22, and is provided in a cylindrical portion 20 a formed in the inner diameter portion of the burner cap 20 so as to be movable up and down. And a temperature sensor 15 which abuts against the bottom of a cooking utensil such as a pot placed on the gotoku 30 to measure the temperature of the utensil.
[0018]
Here, a detailed configuration of the burner cap 20 will be described with reference to FIG.
[0019]
The flame port 22 of the burner cap 20 includes an ignition flame port 222, a radially arranged flame port 224, and an irregularly arranged flame port 226. The ignition flame port 222 is formed in a recessed portion that enters inside so as to be closer to the annular center O of the burner cap 20 than the other flame ports 224 and 226. The ignition flame portion 222 includes an ignition flame 222a and flame holding flames 222b provided on both sides of the ignition flame 222a. An eaves portion 222 c is formed on the upper surface of the ignition flame opening 222 so as to close the upper part of the concave portion that has entered inside and protrude from the peripheral edge of the burner cap 20. An ignition target 40 is provided at the center of the eave portion 222c.
[0020]
Further, a substantially rectangular dam portion 42 projecting downward is formed on the outer edge of the eave portion 222c to protect the ignition target 40 from boiling over. As shown in FIG. 3, a cutout portion 42 a cutout upward from the lower end is formed at the center of the weir portion 42. The notch 42a is notched so as to be gradually tapered upward. In FIG. 3, the upper, lower, left and right portions of the burner cap 20 are omitted.
[0021]
As shown in FIG. 2, the irregularly arranged flame outlets 226 are provided on both sides adjacent to the ignition flame outlet 222. The irregularly arranged flame port 226 has two flame ports: an inner flame port 226a near the ignition flame port 222, and an outer flame port 226b adjacent to the flame port 226a. The flame ports 226a and 226b are arranged on the extension line extending from the annular center O to the opposite side of the ignition flame 222a from the annular center O to the annular center O of the burner cap 20 in the opening direction of the flame aperture. Are provided.
[0022]
Here, the angle formed by the connection and the opening direction of the flame port is defined as the opening angle of the flame port. The base points A and B in the opening direction of the flame ports 226a and 226b of the irregularly arranged flame port section 226 are within a predetermined range on the extension line such that the opening angle of the flame port is equal to or larger than the opening angle of the flame holding flame port 222b. It is located in. The base point B of the opening angle of the outer flame port 226b is provided at a position where the opening angle of the outer flame port 226b is the same as the opening angle of the inner flame port 226a.
[0023]
According to the burner of the present embodiment, the opening directions of the flame ports 226a and 226b of the irregularly arranged flame port portion 226 are different from those of the burners in which the opening directions of all the flame ports are provided at the annular center O. Since it is directed toward the flame opening 222, it suppresses a decrease in the heating distribution at the ignition opening, makes the heating distribution more uniform, and suppresses uneven heat transfer to cooking utensils such as pans, thereby increasing heating efficiency. can get. At the same time, the opening angles of the flame ports 226a and 226b of the irregularly arranged flame port 226 are set to be larger than the opening angles of the flame retaining flame ports 222b. Good combustion can be obtained without the occurrence of red fire due to interference of the flames.
[0024]
Further, in the present embodiment, the irregularly arranged flame outlets 226 are maintained until the flames of the irregularly arranged flame outlets 226 are kept in a state where they do not interfere with each other, that is, until the flames are parallel to the opening direction of the inner flame opening 226a. The opening direction of the outer flame port 226b is inclined toward the ignition flame port 222 side. Accordingly, the burner of the present embodiment is more advantageous in achieving uniform heating distribution and improving heating efficiency.
[0025]
In addition, since the notch 42a is notched so as to be gradually tapered upward, the spill from the pot or the like is reliably distributed to both sides of the weir 42, and the spill to the ignition target 40 is prevented. I don't get it.
[Brief description of the drawings]
FIG. 1 is an overall view of a stove using a burner according to the present embodiment.
FIG. 2 is a bottom view of the burner cap.
FIG. 3 is a partially cutaway side view showing an ignition flame port.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Main body, 11 ... Burner base, 12 ... Mixing tube, 122 ... End wall part, 13 ... Nozzle, 132 ... Opening part, 20 ... Burner cap, 21 ... Toothed protrusion, 22 ... Flame mouth, 222 ... Ignition flame mouth 222a: Flame for ignition, 222b: Flame for flame holding, 222c: Eaves, 224: Flame array, 226: Irregular array, 226a: Inner flame, 226b: Outer flame 14: spark plug, 15: temperature sensor, 30: gotoku, 32 ... gotoku, 40: ignition target, 42: weir.

Claims (3)

Between the burner base and an outer peripheral portion of an annular burner cap provided on the burner base, an ignition flame port portion including an ignition flame port and a flame holding flame port provided on both sides of the ignition flame port; A base point in the opening direction of the flame port is provided on an extension line extending from the annular center to a side opposite to the flame port for ignition, the wire connecting the flame port for ignition and the annular center of the burner cap being adjacent to the ignition flame port. In a burner comprising an irregularly arranged flame port on both sides and a radiating array flame port in which the annular center of the burner cap is set at the base point in the opening direction of the flame port,
The angle between the connection and the opening direction of the flame port is defined as the opening angle of the flame port, and the base point of the opening direction of the flame port of the irregularly arranged flame port portion is defined as the opening angle of the flame port for flame holding. A burner provided within a predetermined range on the extension line as described above. The irregularly arranged flame port has at least two flame ports of an inner flame port near the ignition flame port and an outer flame port adjacent to the flame port. 2. The burner according to claim 1, wherein within the predetermined range on the extension line, the burner cap is located farther away from a base point in an opening direction of an inner flame port with respect to an annular center of the burner cap. 3. The base point in the opening direction of the outer flame port is provided at a position on the extension line such that the opening angle of the outer flame port is equal to the opening angle of the inner flame port. Burner.

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