JPH0777315A - Gas burner device - Google Patents

Abstract

PURPOSE: To provide a gas burner in which aging of an ignition plug can be prevented by preventing incomplete ignition or lifting phenomenon after ignition. CONSTITUTION: A gas burner for ejecting, igniting and combusting gas comprises a burner body section A having a gas supply space g, and a main flame gas channel 12 opening to the outer circumference of the burner body section A and communicating with the gas supply space g. The gas burner further comprises sub-flame gas channels 14, 16 contiguous to the main flame gas channel 12 opening to the outer circumference of the burner body section A and communicating with the gas supply space g, and an ignition gas channel 32 branched from the way of the sub-flame gas channels 14, 16. An ignition plug 40 having a discharge section 44 disposed on the inside of the outer circumference of the burner body section A is also provided in the ignition gas channel 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burner device, and more particularly to a gas burner device for ejecting, igniting and burning gas.

[0002]

2. Description of the Related Art Normally, a gas burner ejects gas from a gas ejection port of the burner by rotating a gas opening / closing knob, and sparks are scattered from an ignition plug mounted near the gas ejection port into the ejected gas. Ignite and burn. As such an ignition device for a gas burner, a piezoelectric device that converts mechanical force when a gas opening / closing knob is operated into electricity is conventionally used, and a single operation is performed by one operation of the opening / closing knob. Sparks are generated.

In recent years, a continuous spark type ignition device has been used as an ignition device for a gas burner. this is,
The spark generated by the spark is generated in the spark plug by using the high voltage supplied from the separately provided power source by the operation of the opening / closing knob. Sparks from the spark of the spark plug are continuously generated until the jet gas is ignited. It is said that this continuous spark type ignition device is less likely to cause ignition failure and can be surely ignited.

[0004]

In the conventional gas burner device, since the ignition plug is arranged near the gas ejection port, the gas flame continuously contacts the ignition plug after igniting the ejection gas. It will be. If the spark plug is used for a long period of time in contact with the flame of gas, the spark plug, especially the discharge part, ages, and a smooth ignition operation cannot be achieved. Moreover, since the discharge part of the spark plug must be arranged outside the gas ejection port, the discharge part is exposed outside the burner. Since the discharge part is sharply formed so that sparks can easily fly, there is a risk of injury due to the sharp discharge part when cleaning the burner. In a gas burner device for cooking, the soup or the like overflows during cooking and the discharge part of the spark plug is easily contaminated. If the discharge part becomes dirty, the ignition success rate will decrease and the aging of the discharge part will progress.

Further, the conventional burner device has a problem that a lifting phenomenon (fire jump) occurs when the gas ejection pressure is increased to obtain a strong flame. The occurrence of the lifting phenomenon reduces the operating performance of the burner device such as making the flame unstable and lowering the heating efficiency. If the gas ejection pressure is high, it is difficult to ignite the spark sparks and the ignition cannot be performed smoothly.

In the above-described continuous spark type ignition device, if it is difficult to ignite with one spark, the number of sparks until successful ignition increases, and the aging of the discharge part further progresses. An object of the present invention is to provide a gas burner device capable of preventing ignition failure and lifting phenomenon after ignition, preventing aging of a spark plug and extending the life thereof.

[0007]

A gas burner device of the present invention is a gas burner device for ejecting gas, igniting the gas, and burning the gas. The burner body, the main flame gas passage, the sub-flame gas passage, and the ignition gas. It has a flow path and a spark plug. The burner body has a gas supply space to which gas is supplied. The main flame gas passage opens at the outer periphery of the burner body and communicates with the gas supply space. The sub-flame gas passage is adjacent to the main-flame gas passage and opens to the outer periphery of the burner body to communicate with the gas supply space. The ignition gas passage is separated from the middle of the auxiliary flame gas passage. The spark plug has a discharge portion arranged inside the outer periphery of the burner body in the ignition gas flow path.

It is preferable that the openings of the auxiliary flame gas passages are continuously arranged along the circumferential direction of the burner body. The burner body may be provided with an ignition guide protrusion at a position facing the discharge part of the spark plug. The discharge portion of the spark plug may have a bent tip.

The burner body may include a burner base, a burner head arranged above the burner base, and a burner cap arranged above the burner head. In this case, the gas supply space is arranged from the upper part of the burner base to the lower part of the burner cap through the center of the burner head. The main flame gas passage is arranged at a boundary portion between the burner head and the burner cap. The sub-flame gas flow passage is arranged at a boundary portion between the burner base and the burner head. The ignition gas flow passage is provided vertically through the burner base. The spark plug is located below the burner base.

[0010]

In the gas burner device of the present invention, when gas is supplied to the gas supply space of the burner body, the gas flows in both the main flame gas passage and the sub-flame gas passage, and the burner body is opened through the respective openings. Gas spouts out of the section.
A part of the gas that has flowed into the secondary flame gas flow channel also flows into the ignition gas flow channel separately. Since the ignition gas passage is divided from the middle of the auxiliary flame gas passage, the pressure of the gas flowing through the ignition gas passage becomes lower than the pressure of the gas flowing through the auxiliary flame gas passage. The gas flowing in the ignition gas flow path reaches the position of the discharge portion of the ignition plug.

In this state, when the spark plug is energized to generate a spark from the discharge part, the gas in the ignition gas passage is ignited. Since the gas flowing through the ignition gas flow channel has a low pressure, the ignition is less likely to be hindered by the momentum of the gas flow, and the ignition is reliably performed. The flame of the gas ignited in the ignition gas flow path ignites the gas flowing in the auxiliary flame gas flow path communicating with the ignition gas flow path.
Ignition is reliable because the flame of the gas previously ignited in the ignition gas flow path comes into contact with the gas in the auxiliary flame gas flow path and ignites. When the gas flowing through the sub-flame gas flow path is ignited, a flame ejects from the opening of the sub-flame gas flow path provided on the outer circumference of the burner main body due to the gas flow.

The flame of the gas ejected from the opening of the sub-flame gas passage contacts the gas ejected from the opening of the main-flame gas passage adjacent to the sub-flame gas passage, and the ejected gas of the main-flame gas passage is Is ignited. The jet gas in the main flame gas passage is not directly ignited by the spark of the spark plug, but the flame of the jet gas in the auxiliary flame gas passage comes into contact and ignites, so the jet gas pressure in the main flame gas passage is high. Even if it is, it can be surely ignited.

If the pressure of the gas ejected from the main flame gas passage is high, the lifting phenomenon described above is likely to occur, but a stable flame in the auxiliary flame gas passage existing adjacent to the opening on the outer periphery of the main flame gas passage is provided. Thus, the jet gas of the sub-flame gas passage and the jet gas of the main-flame gas passage are mixed and burned, and the flame caused by the jet gas from the main-flame gas passage can be calmed or stabilized, Lifting phenomenon is suppressed.

The above-mentioned discharge part of the spark plug is arranged in the ignition gas flow path and does not have to be arranged outside the opening of the main flame gas flow path. It is not exposed to the strong flame of the gas ejected from the road.
Moreover, even if the soup or the like drops near the opening of the main flame gas passage during the above-mentioned cooking, the discharge part of the spark plug is not contaminated.

If the openings of the sub-flame gas passages are continuously arranged along the circumferential direction of the burner body, the gas ejected from the openings of the main-flame gas passages will have the sub-flame gas passages Since the flames in the openings surely come into contact with each other, it is possible to reliably ignite the gas ejected from the main flame gas passage and to prevent the lifting phenomenon against the flame in the main flame gas passage. If the burner main body is provided with the ignition guide protrusion at a position facing the discharge part of the spark plug, the discharge part can surely generate a spark and ignite the surrounding gas.

If the tip of the discharge portion of the spark plug is bent, the bent tip of the discharge portion is arranged at a position suitable for igniting the gas in the ignition gas flow passage, and the discharge portion located behind the bent portion. And other structural parts of the spark plug can be arranged in another location or orientation. As a result, it is possible to install the spark plug in a place that is unlikely to get dirty during use or a place that is not easily exposed to strong flames or high heat without impairing the ignition function.

If the burner main body is divided into the burner base, the burner head and the burner cap as described above, each member can be easily manufactured and processed, and the burner main body can be easily disassembled and cleaned. By disposing the main flame gas passage and the auxiliary flame gas passage at the boundary portion between the burner base and the burner head or the boundary portion between the burner head and the burner cap, two systems of the main flame gas passage and the auxiliary flame gas passage can be obtained. The gas passages can be easily configured, and the functions of the respective gas passages can be surely fulfilled. If the spark plug is arranged below the burner base, even if the juice overflows during the above-described cooking use, there is no concern that the spark plug becomes dirty, and it is possible to prevent the spark plug from being exposed to a strong flame or high heat.

[0018]

EXAMPLES The gas burner apparatus shown in FIGS.
The burner body A has a thick disc shape as a whole. The burner main body portion A is detachably assembled by stacking the burner base portion 30, the burner head 10 and the burner cap 20 in order from bottom to top.

The burner base 30 has a circular dish shape, and the upper part thereof constitutes the bottom part of the gas supply space g. As shown in FIG. 1, a gas supply port 36 connected to the gas supply space g is provided at the center of the burner base 30. The gas supply port 36 communicates with a gas supply path formed of an external gas pipe or the like to supply gas. The gas supply passage is provided with a gas opening / closing knob (not shown) for adjusting or shutting off the gas supply amount.

The lower surface of the burner base 30 has a spark plug 4
0 is attached by tightening the screw 42. A power source and a control device (neither shown) are connected to the spark plug 40. The control device of the spark plug 40 is linked with the gas opening / closing knob that controls the supply of gas. The structure of the ignition plug 40 such as the power supply, control device, and gas opening / closing knob is the same as that of a normal burner device, and detailed description thereof is omitted.

The spark plug 40 is attached to the lower surface of the burner base 30 in an inclined state which is almost horizontal, and has a discharge portion 44 on the front end side which is diagonally upward. Discharging unit 44
Is bent in an L shape. Discharge part 44 bent in L shape
Has a sharp point and points vertically upward. An ignition guide protrusion 34 is provided on the lower surface of the burner base 30 at a position facing the tip of the discharge portion 44 of the spark plug 40. The burner base 30 is provided on the inner peripheral side adjacent to the ignition guide protrusion 34.
A narrow slit groove 32 that extends vertically through the groove
Have. The slit groove 32 serves as an ignition gas passage.

The burner head 10 has an annular shape with a penetrating portion serving as a gas supply space g in the center. On the lower surface of the burner head 10, reverse concave grooved gas flow passages 14 communicating from the inner gas supply space g to the outer circumference are intermittently provided at regular intervals at the boundary with the burner base 30. ing. On the outer side of the groove-shaped gas flow passage 14, a gap-shaped gas flow passage 16 which is formed between the burner head 10 and the burner base 30 and extends obliquely upward from the inner circumference to the outer circumference is provided over the entire circumference. There is. A part of the gap-shaped gas flow channel 16 communicates with the slit groove 32 of the burner base 30 on its lower surface. As shown in FIG. 1, the openings in the outer periphery of the burner body A of the interstitial gas flow passage 16 are continuously arranged along the circumferential direction. The groove-shaped gas flow passage 14 and the gap-shaped gas flow passage 16 form a secondary flame gas flow passage.

On the upper surface of the burner head 10, tooth-shaped projections 11 are provided at regular intervals over the entire circumference. The burner cap 20 has a lid portion 22 whose upper surface is curved in an inverted dish shape, and an outer peripheral projection 24 which is provided on the lower surface of the lid portion 22 and projects downward. Burner cap 20
The outer peripheral projection 24 of the tooth-shaped protrusion 11 of the burner head 10.
Gas supply space g on the inner circumference between the tooth-shaped protrusions 11
The main flame gas flow passage 12 is formed by a diagonally upward hole leading to the outer circumference. The openings of the main flame gas flow passage 12 on the outer circumference of the burner body A are arranged intermittently along the circumferential direction.

The number of groove-shaped gas flow passages 14 forming the sub-flame gas flow passages is set to be smaller than the number of main flame gas flow passages 12. Thereby, the main flame gas passage 12
The amount of gas ejected from the main flame gas passage 12 becomes larger than the amount of gas ejected from the auxiliary flame gas passage,
Sufficient strength suitable for the intended use of the gas burner device. The amount of gas ejected from the main flame gas flow passage 12 and the auxiliary flame gas flow passage constituted by the groove-shaped gas flow passage 14 and the gap-shaped gas flow passage 16 is not limited to the number of the above-mentioned grooves but the entire flow passage. It depends on the shape and arrangement of the.

Gas burner body A having the above structure
Is used by being incorporated in a gas range and various heating devices. Next, the operation of the above gas burner device will be described. To use the gas burner device, first
Operate the gas open / close knob to the ignition position. Then, the gas is sent from the gas supply port 36 to the gas supply space g.
At this time, the operation of the gas opening / closing knob is set so that the gas supply amount or pressure to the gas supply space g is maximized. The gas mainly blows out from the gas supply space g through the main flame gas flow path 12 to the outer periphery of the burner main body portion A. The remaining gas passes from the gas supply space g through the auxiliary flame gas flow passage consisting of the groove-shaped gas flow passage 14 and the gap-shaped gas flow passage 16 and the burner main body portion A.
Erupts on the outer periphery of. A part of the gas flowing through the gap-shaped gas flow channel 16 also flows into the slit groove 32. Gap-shaped gas flow path 16
In order for the gas to separately flow from the slit groove 32 to the slit groove 32, the pressure of the gas flowing through the gap-shaped gas flow path 16 must be high to some extent. The gas pressure when the gas opening / closing knob is operated to the ignition position is set so as to satisfy this pressure condition.

By operating the gas opening / closing knob, the spark plug 40 is energized with the supply of gas, and sparks are generated by high-voltage discharge between the tip of the discharge portion 44 and the ignition guide projection 34. Sparks come into contact with the gas flowing downward from the slit groove 32, and the gas is ignited. The flame of the gas ignited in the ignition gas flow path comes into contact with the gas flowing in the gap-shaped gas flow path 16 above the slit groove 32 and ignites this gas. The flame ignited by the gas flowing through the gap-shaped gas passage 16 continuously ejects the flame from the opening on the outer periphery of the gap-shaped gas passage 16 over the entire circumference of the burner body A in the circumferential direction.

When the flame is ejected from the outer peripheral opening of the gap-shaped gas passage 16, the flame comes into contact with the gas ejected from the main flame gas passage 12 adjacent to the outer peripheral opening of the gap-shaped gas passage 16. Ignite this gas. As a result, the main flame gas passage 12
Flames will gush out from the opening. The ignition of the spark in the ignition gas passage, the ignition of the gas in the ignition gas passage, the ignition of the gas in the auxiliary flame gas passage, and the ignition of the gas in the main flame gas passage are instantaneous Since it progresses continuously, it does not cause problems such as explosion ignition.

After the gas in the main flame gas passage 12 is ignited, the gas opening / closing knob is released to operate the ignition position from the ignition position to the normal use position. As a normal use position, the gas pressure can be selected and set in three stages of "large, medium, and small" that are smaller than the maximum pressure at the ignition position. When the gas pressure of the main flame gas flow passage 12 is high in the usage state of the gas burner device, the lifting phenomenon is likely to occur. However, in this gas burner device, due to the existence of the above-mentioned auxiliary flame gas flow passage, The lifting phenomenon can be suppressed in any of the gas pressure setting states of “large, medium, and small”.

When the gas opening / closing knob is operated to change the gas pressure to any of the "high, medium, and low" operating pressures lower than the maximum pressure at the time of ignition, the slit-like gas passage 16 is slit. It becomes difficult for gas to flow in the groove 32, and the spark plug 4
The discharge section 44 of 0 is not exposed to the flame. This is because if the pressure of the gas flowing through the gap-shaped gas passage 16 becomes low, the amount of gas leaking from the gap-shaped gas passage 16 to the slit groove 32 will be small. In addition, since the gas flowing through the gap-shaped gas flow passage 16 is burned at the opening on the outer periphery, the air flow from the lower side of the slit groove 32 toward the outer peripheral side of the gap-like gas flow passage 16, that is, hot air, is high due to the combustion of the gas. Rises. Therefore, the flow of gas from the gap-shaped gas flow channel 16 to the slit groove 32 side is blocked.

[0030]

According to the gas burner device of the present invention, the burner body is provided with the main flame gas passage, the sub flame gas passage and the ignition gas passage, and the discharge portion of the spark plug ignites the gas in the ignition gas passage. The flame of the ignited gas is transferred to the gas in the sub-flame gas flow passage, and the flame of the gas ejected from the sub-flame gas flow passage ignites the gas ejected from the main flame gas flow passage. Therefore, ignition is reliable and ignition failure is unlikely to occur.

Since the discharge part of the spark plug does not have to be exposed at the outer periphery of the burner body, the discharge part of the spark plug is less likely to be contaminated and the discharge part is less likely to be exposed to a strong flame or high heat. As a result, it is possible to eliminate the ignition failure due to dirt and prevent the progress of aging due to dirt or flame or high heat. If the ignition failure is unlikely to occur and the progress of aging can be prevented, the life of the discharge part and the spark plug is extended. In addition, there is no need to worry about being injured by the sharp discharge part.

In particular, the existence of the auxiliary flame gas passage suppresses the lifting phenomenon of the flame in the main flame gas passage and maintains a stable flame, so that the burner device can be used with improved performance. Further, it is possible to obtain a strong thermal power by increasing the pressure of the gas ejected from the main flame gas passage. It should be noted that if the openings of the auxiliary flame gas flow passages are continuously arranged along the circumferential direction of the burner body, ignition failure is unlikely to occur and the lifting phenomenon can be reliably prevented.

If the burner main body is provided with an ignition guide projection at a position facing the discharge portion of the spark plug, ignition is assured and ignition failure can be prevented. If the tip of the discharge part of the spark plug is bent, the spark plug can be arranged at an appropriate position without impairing the ignition function of the discharge part, and the gas burner device can be made compact as a whole. Also, if the spark plug is placed away from the flame and high heat, it is possible to prevent the spark plug from aging.

If the main body of the burner has a structure in which the burner base, the burner head and the burner cap are sequentially arranged on the upper part, the main flame gas passage, the auxiliary flame gas passage and the ignition gas passage can be easily constructed. Therefore, the gas burner device can be easily manufactured, and handling such as disassembly and cleaning is facilitated. If the spark plug is arranged below the burner base, the spark plug does not easily get dirty, there is no concern that the spark plug gets dirty, and the spark plug can be protected from strong flames and high heat to prevent the spark plug from aging.

[Brief description of drawings]

FIG. 1 is a perspective view of a gas burner device showing an embodiment of the present invention as seen obliquely from below.

FIG. 2 is a vertical sectional view of the above gas burner device.

[Explanation of symbols]

 10 Burner Head 12 Main Flame Gas Flow Path 14 Groove Gas Flow Path 16 Gap Gas Flow Path 20 Burner Cap 30 Burner Base 32 Slit Groove 40 Spark Plug 44 Discharge Section A Burner Main Body g Gas Supply Space

Claims (5)

[Claims] 1. A gas burner device for ejecting, igniting and burning gas, comprising: a burner main body having a gas supply space to which the gas is supplied; and an opening on the outer periphery of the burner main body in the gas supply space. A main flame gas flow path that communicates, a secondary flame gas flow path that is adjacent to the main flame gas flow path and opens to the outer periphery of the burner main body and that communicates with the gas supply space, and is divided from the middle of the secondary flame gas flow path. A gas burner device, comprising: an ignition gas flow path; and an ignition plug in which a discharge portion is arranged inside the outer periphery of the burner body in the ignition gas flow path. 2. The gas burner device according to claim 1, wherein the openings of the auxiliary flame gas passages are continuously arranged along the circumferential direction of the burner body. 3. The gas burner device according to claim 1, wherein the burner body has an ignition guide projection at a position facing the discharge portion of the spark plug. 4. The gas burner device according to claim 1, wherein a tip of the discharge portion of the spark plug is bent. 5. The burner main body includes a burner base, a burner head arranged above the burner base, and a burner cap arranged above the burner head, and the gas supply space includes the burner base. It is arranged from the upper part to the lower part of the burner cap through the center of the burner head, the main flame gas passage is arranged at a boundary portion between the burner head and the burner cap, and the auxiliary flame gas passage is the burner. It is arrange | positioned at the boundary part of a base and the said burner head, the said ignition gas flow path is provided so that the said burner base may be penetrated up and down, The said ignition plug is arrange | positioned below the said burner base, 4. The gas burner device according to any one of 4.