JP2007032997A - Gas stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide excellent using convenience, by mounting a gas stove burner free from defective ignition to be surely ignited, to make combustibility excellent to enhance heat efficiency, and to save energy, in a gas stove. <P>SOLUTION: This gas stove 1 is constituted of a burner cap 4 and a burner body 1, the burner cap 4 is formed into a shape with each flame hole 8 provided toward the center to form a flame by diagonal upward injection, and an ignition electrode 19 is constituted for heating in a space part 17 provided by a coating body 14 and the burner cap 4 in an outside 13 of the burner cap 4. The gas stove 1 having sure ignition performance free from the defective ignition is provided by this manner. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stove burner mounted on a gas stove, and more particularly to a discharge ignition configuration using an ignition electrode.

  As shown in FIG. 7 as Conventional Example 1, in the gas stove 30 having the stove burner 31, the stove burner 31 has a main flame port 33 arranged on the circumference on the upper surface of the burner body 32, and a part of the circumference. The burner cap 35 provided with the ignition flame port 34 is placed and configured, and the main flame port 33 and the ignition flame port 34 are burned with the combustion flame 36 and the ignition flame 37 for cooking and heating. In the stove burner 31, the burner cap 35 and the burner body 32 constitute an ignition space 39 in which an ignition electrode 38 is provided, the burner cap 33 facing the ignition electrode 38 constitutes a discharge target 40, and the gas stove 30 performs an ignition operation. If it does, it is set as the structure which discharges between the ignition electrode 38 and the discharge target 40, and is the gas stove 30 comprised by opening the ignition flame opening 34 in the ignition space 39 (for example, refer patent document 1).

Moreover, as shown in FIG. 8 as Conventional Example 2, there is also a stove burner 43 in which a slit flame opening 42 is provided on the upper surface of the burner cap 41 (see, for example, Patent Document 2).
JP 2000-283415 A JP 2001-201017 A

  However, in the configuration of the conventional example 1, the main flame port 33 is provided on the circumference to form the combustion flame 36, and the ignition flame port 34 is provided on the same circumference to form the ignition flame 37. In both cases, a flame is formed and burns toward the outer periphery of the stove burner 31. Accordingly, when heating an object to be heated such as a pan for cooking on the gas stove 30, the center portion of the object to be heated is not heated because the combustion flame 36 does not exist, and the outside of the object to be heated is being heated. High-temperature combustion gas flows while heating the side surface from the outer periphery of the bottom surface of the object to be heated. In this way, the combustion gas flows along the outer periphery of the bottom surface of the object to be heated, so that the handle etc. existing on the side surface of the object to be heated becomes high temperature, making it difficult to touch directly, and inconvenience on the cooking work surface Had. In order to prevent the temperature of such a handle from becoming too high, the stove as shown in the prior art 2 in order to provide a safe gas stove 30 by lowering the temperature of the combustion gas that has flowed to the side of the object to be heated. A burner 43 was provided.

  In the gas stove 43 equipped with the stove burner 42, a combustion flame is formed at the center of the object to be heated and heated, so that the temperature of the combustion gas at the time of reaching the side of the object to be heated is the same as that of the object to be heated. Since the heat is exchanged between the two, the temperature of the handle of the object to be heated is low, so that a safe gas stove can be provided. However, there is no disclosure regarding the ignition configuration.

  Further, Conventional Example 1 heats the center of the object to be heated more by heating the outside of the object to be heated than the bottom of the object to be heated. Therefore, the gas stove 30 of the conventional example 2 has higher thermal efficiency than the conventional example 1, and is a gas stove 30 realizing energy saving.

The present invention proposes a burner in which all the flame openings are formed on the upper surface side of the burner cap in order to solve the above-described conventional problems, shortens the distance from the bottom of the pan, and improves the thermal efficiency by heating uniformly. In particular, by ensuring stable ignition performance in a configuration in which all the flame outlets are provided on the upper surface side of the burner cap, it is easy to build and inexpensive on the manufacturing side while improving energy saving and thermal efficiency. The purpose is to provide a stove burner.

  In order to solve the above problems, a gas stove according to the present invention comprises a burner body having an annular head portion provided with an opening on the upper surface, a detachable attachment to the annular head portion of the burner body, and a radial circumference toward the center side. The flame ports are arranged at equal intervals, and the cross-section of the flame port is a burner cap formed by pressing into a shape in which one end projects upward from the other end surface, and is detachably attached to the outside of the burner cap. A ring-shaped covering formed with a space having openings A and B on the mouth side and the lower side, and an ignition electrode disposed in the space of the covering, the space from the ignition electrode A discharge target is formed, and an ignition configuration of gas ejected in a swirling manner on the upper surface of the burner cap is provided.

  According to the above invention, the cross-section of the flame mouth is provided by arranging the flame mouths at circumferentially equal intervals radially toward the center side on the annular head of the burner body having an annular head portion provided with an opening on the upper surface. Because the stove burner with a burner cap molded with a press in a shape with one end projecting upward from the other end surface is mounted, gas from the flame outlet is ejected obliquely upward In addition, a swirl flow is exhibited at the annular head. When gas is burned with a stove burner in which such a gas flow has occurred, the combustion flame formed in the flame port exhibits swirling combustion swirling around the annular head. Therefore, when the object to be heated is heated by swirling combustion, the combustion gas is forced to be stirred by the swirling flow, so that a turbulent flow state occurs. Since the turbulent combustion gas flows on the surface of the object to be heated, the temperature boundary layer generated between the surface of the object to be heated and the combustion gas is thinned, so that the heat transfer coefficient between the object to be heated and the combustion gas is increased. Therefore, the amount of heat transferred from the combustion gas to the object to be heated increases. A gas stove equipped with the above-described stove burner can provide an energy-saving gas stove with high thermal efficiency. In addition, the swirling flow causes the swirling phenomenon induced by the swirling flow in the air around the swirling flow, so the diffusion coefficient between the combustion flame and the secondary air for combustion increases during combustion. Sufficient secondary air is supplied to the combustion flame to achieve complete combustion. This complete combustion can provide a safe gas stove that does not generate carbon monoxide or the like.

  In addition, flame outlets are arranged radially at equal intervals around the annular head of the burner body having an annular head having an opening on the upper surface, and the cross section of the flame outlet is at one end. A stove burner with a burner cap molded with a press in a shape projecting upward from the end face is mounted, with an opening A having one end open on the flame opening side and the other end outside the flame opening. The space portion having the opening B opened to the lower side was formed of the outer peripheral wall of the burner cap and the covering. By igniting the ignition electrode in the space provided outside the conoburner and forming the discharge target from the ignition electrode in the space, the gas from the flame port has a velocity obliquely upward. Therefore, a swirl flow is exhibited at the annular head. A part of the swirling flow swirls out of the outer diameter of the burner cap due to the centrifugal force generated by the swirling flow outside the burner cap. Accordingly, a part of the swirling flow swirling outside the outer diameter of the burner cap flows into the space formed by the outer peripheral wall of the burner cap and the covering. When discharging is performed from the ignition electrode toward the discharge target in a state where such a swirling flow is generated, the gas flowing in the swirling flow is present in the discharge space portion, so that it is reliably ignited and combustion starts. In addition, since the ignition electrode is covered with a covering that forms a space, the soup may become wet or dirty even if boiled juice splatters or spills during cooking from the object to be heated. Therefore, it is possible to provide an easy-to-use gas stove by reliable ignition because the electric discharge is surely performed without causing electrical leakage.

  The gas stove of the present invention can provide an easy-to-use gas stove that has a reliable ignition performance that is resistant to spillage of boiled juice and the like with energy saving with improved thermal efficiency.

  A first aspect of the invention is a burner body having an annular head with an opening on the upper surface, and a burner body that is detachably attached to the annular head of the burner body. At the same time, the cross-section of the flame opening is a burner cap formed by pressing into a shape with one end projecting upward from the other end surface, and is detachably attached to the outside of the burner cap, and opens to the flame opening side and the lower side. A ring-shaped covering body having a space portion having A and an opening B, and an ignition electrode disposed in the space portion of the covering body, and forming a discharge target from the ignition electrode in the space portion, It has an ignition configuration of gas ejected in a swirling manner on the upper surface of the burner cap.

  As a result, the gas from the flame outlet is ejected with a velocity obliquely upward, and thus presents a swirling flow at the annular head. When gas is burned with a stove burner in which such a gas flow has occurred, the combustion flame formed in the flame port exhibits swirling combustion swirling around the annular head. Therefore, when the object to be heated is heated by swirling combustion, the combustion gas is forced to be stirred by the swirling flow, so that a turbulent flow state occurs. Since the turbulent combustion gas flows on the surface of the object to be heated, the temperature boundary layer generated between the surface of the object to be heated and the combustion gas is thinned, so that the heat transfer coefficient between the object to be heated and the combustion gas is increased. Therefore, the amount of heat transferred from the combustion gas to the object to be heated increases. A gas stove equipped with the above-described stove burner can provide an energy-saving gas stove with high thermal efficiency. In addition, since the swirling flow causes the swirling phenomenon induced by the swirling flow in the air around the swirling flow, the diffusion coefficient between the combustion flame and the secondary air for combustion increases during combustion. Sufficient secondary air is supplied to the combustion flame to achieve complete combustion. This complete combustion can provide a safe gas stove that does not generate carbon monoxide or the like.

  In addition, flame outlets are arranged radially at equal intervals around the annular head of the burner body having an annular head having an opening on the upper surface, and the cross section of the flame outlet is at one end. A stove burner with a burner cap molded with a press in a shape projecting upward from the end face is mounted, with an opening A having one end open on the flame opening side and the other end outside the flame opening. The space portion having the opening B opened to the lower side was formed of the outer peripheral wall of the burner cap and the covering. By igniting the ignition electrode in the space provided outside the conoburner and forming the discharge target from the ignition electrode in the space, the gas from the flame port has a velocity obliquely upward. Therefore, a swirl flow is exhibited at the annular head. A part of the swirling flow swirls out of the outer diameter of the burner cap due to the centrifugal force generated by the swirling flow outside the burner cap. Accordingly, a part of the swirling flow swirling outside the outer diameter of the burner cap flows into the space formed by the outer peripheral wall of the burner cap and the covering. When discharging is performed from the ignition electrode toward the discharge target in a state where such a swirling flow is generated, the gas flowing in the swirling flow is present in the discharge space portion, so that it is reliably ignited and combustion starts. In addition, since the ignition electrode is covered with the covering that forms the space, the soup may become wet or dirty even if boiled juice spills or spills from the heated object during cooking. Therefore, it is possible to provide an easy-to-use gas stove by reliable ignition because the electric discharge is surely performed without causing electrical leakage. In addition, a part of gas flows into the space until ignition, but the combustion flame is outside the burner cap due to the combustion speed or the amount of combustion air of the combustion flame formed in the flame opening at the same time as ignition. Since there is no phenomenon that protrudes, the coated body is not directly heated by the combustion flame, so that a safe and economical gas stove can be provided with little temperature rise and no loss of combustion heat.

  In the second aspect of the invention, the discharge target from the ignition electrode is formed on the burner cap flame surface or the outer peripheral wall of the burner cap, and the ignition configuration of the gas ejected in a swirling manner on the upper surface of the burner cap is provided.

  As a result, since the discharge space between the ignition electrode and the discharge target is configured closer to the flame outlet from which gas is ejected, the gas presenting a swirling flow is surely present in the discharge space during discharge, so reliable ignition is possible. Performance is obtained.

  In the third aspect of the invention, one of the radially arranged flame openings on the upper surface of the burner cap is arranged so as to be positioned at the approximate center of the opening A formed in the space portion of the covering.

  As a result, since the discharge space between the ignition electrode and the discharge target is configured immediately closer to the flame outlet from which gas is ejected, the gas presenting a swirling flow is surely present in the discharge space during discharge, so that reliable ignition is possible. Performance is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by the form of a present Example.

(Embodiment 1)
FIG. 1 shows a sectional view of a combustion part of a gas stove according to the first embodiment of the present invention, and FIG. 2 shows a gas stove equipped with the combustion part of the present invention. 3 is a top view of the combustion part, FIG. 4 is an enlarged sectional view of an ignition part of the combustion part, and FIG. 5 is an enlarged sectional view of a flame port.

  In the figure, reference numeral 1 denotes a gas stove having a stove burner 2, and the burner cap 4 fitted and mounted on the burner body 3 is pressed with a stainless material or the like, and the gas seal portion is a central secondary air hole. The cylindrical part 6 of the passage hole 5 and the cylindrical part 7 of the outer periphery are comprised. A burner cap 4 is placed on the burner body 3 to form a secondary air passage hole 5. The shape of the flame opening 8 is formed by forming a flame slit width 12 by press working in a shape in which one end 9 protrudes upward 11 from the other end surface 10. A space part having a cover 14 provided on the outer side 13 of the burner cap 4 and having an opening A16 on the outer side 13 of the flame outlet 8 and an opening B17 below the outer side 13 with the outer peripheral wall 15 of the burner cap 4. 18, the ignition electrode 19 is provided in the space 18, and the surface covering 14 facing the space 18 is protruded with respect to the space 18 at a portion located above the space 18 corresponding to the ignition electrode 19. A gas discharge target 20 is configured to form an ignition unit 21, and a combustion unit 22 of the gas stove 1 is configured. Reference numeral 23 denotes a gas stove of the gas stove 1 on which an object to be heated 24 is placed and used for cooking or the like.

As a result, when the operation portion of the gas stove 1 is ignited, the flame outlet 8 of the burner cap 4 of the stove burner 2 is configured with the flame slit width 12, so that the gas ejection from the flame outlet 8 faces obliquely upward. become. A swirling flow is generated by the gas jetted obliquely upward and flowing obliquely upward along the circumference. At the same time, since the gas from the flame outlet 8 has a velocity obliquely upward, a part of the swirling flow is caused by the centrifugal force generated by the swirling flow at the outer portion 13 of the burner cap 4. It swivels out of the outer diameter of the outside. Accordingly, a part of the swirling flow swirling outside the outer diameter of the burner cap 4 swirls in a state of flowing from the opening A16 into the space portion 18 constituted by the outer peripheral wall 15 and the covering body 14 of the burner cap 4. is doing. When discharge is performed from the ignition electrode 19 toward the discharge target 20 in a state where such a swirling flow is generated, since the gas flowing in the swirling flow from the opening A16 to the space portion 18 exists when the discharge is performed, it is reliably ignited. And start burning. Combustion is obtained by sucking and supplying secondary air from the central secondary air passage hole 5 to obtain optimum good combustion. Further, when the flame is directed obliquely upward, the flame outlet 8 generates a swirling flow due to the force ejected in the circumferential direction and the force from which the exhaust heat is further discharged from the upper direction through the bottom of the object to be heated 24, More secondary air can be sucked than the central secondary air passage hole 5, and good combustion can be obtained. Therefore, when the object to be heated is heated by swirling combustion, the combustion gas is forced to be stirred by the swirling flow, so that a turbulent flow state occurs. Since the turbulent combustion gas flows on the surface of the object to be heated 24, the temperature boundary layer generated between the surface of the object to be heated 24 and the combustion gas is thinned, so that the heat transfer coefficient between the object to be heated 24 and the combustion gas is large. Become. Therefore, the amount of heat transferred from the combustion gas to the object to be heated 24 increases. The gas stove 1 equipped with the above-described stove burner 2 can provide an energy-saving gas stove 1 with high thermal efficiency. In addition, since good combustion is obtained by stirring, the distance between the bottom of the object to be heated 24 and the stove burner 2 can be reduced, and energy saving and thermal efficiency can be improved.

  In addition, since the ignition electrode 19 is covered at the upper part 11 by the covering body 14 that constitutes the space portion 18, even if boiled juice spills or spills from the heated object 24 or the like during cooking, the ignition electrode 19 gets wet. Or since it does not become dirty, it discharges reliably without causing an electric leak, so that it is possible to provide a gas stove 1 that is easy to use by reliable ignition.

  Further, a part of the gas flows into the space 18 until ignition, but the combustion flame is burner cap 4 in relation to the combustion speed or the amount of combustion air of the combustion flame formed at the flame opening simultaneously with ignition. Therefore, the covering 24 is not directly heated by the combustion flame, so that a safe and economical gas stove with little temperature rise and no loss of combustion heat can be provided.

  As described above, the gas stove in the present embodiment provides an ignition configuration that can ensure stable ignition performance in a configuration in which all the flame openings are provided on the upper surface side of the burner cap.

(Embodiment 2)
FIG. 6 shows a cross-sectional shape of the ignition configuration of the second embodiment of the present invention. In addition, the same number is attached | subjected to what has the function and effect | action similar to Embodiment 1, and description is abbreviate | omitted.

  In the figure, the gas stove 1 has an ignition configuration in which the discharge target 25 from the ignition electrode 19 is formed on the component surface of the flame mouth 8 of the burner cap 4 or the outer peripheral wall 15 of the burner cap 4.

  As a result, since the discharge space between the ignition electrode and the discharge target is configured closer to the flame outlet from which gas is ejected, the gas presenting a swirling flow is surely present in the discharge space during discharge, so reliable ignition is possible. Performance is obtained.

(Embodiment 3)
The ignition configuration of the third embodiment of the present invention will be described using FIG. 6 shown in the second embodiment. In addition, the same number is attached | subjected to the same function and effect | action as another embodiment, and description is abbreviate | omitted. The gas stove 1 having an ignition configuration in which the flame port 8 processed by press molding is positioned at the approximate center of the opening A16 opened to the flame port 8 side of the outer side 13 of the flame port 8.

  As a result, the discharge space between the ignition electrode 19 and the discharge target 20 is configured in the immediate vicinity of the flame outlet 8 from which more gas is ejected, so there is definitely a gas presenting a swirling flow in the discharge space during discharge. Reliable ignition performance is obtained.

  As described above, the gas stove according to the present invention can be applied to uses such as a safe and easy-to-use cooker because reliable ignition and good combustion can be obtained.

Sectional drawing of the combustion part of the gas stove in Embodiment 1 of this invention External view of gas stove equipped with the same burner Top view of the combustion section of the stove Expanded sectional view of the ignition part of the stove Expanded cross-sectional view of the stove of the stove The top view which shows the ignition part structure of Embodiment 2 of this invention Side view of a conventional stove burner Side sectional view of another conventional stove

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas stove 2 Stove burner 3 Burner body 4 Burner cap 5 Secondary air passage hole 8 Flame port 14 Covering body 15 Outer peripheral wall 16 Opening A
17 Opening B
18 Space part 19 Ignition electrode 20 Discharge target 21 Ignition part

Claims (3)

A burner body having an annular head portion provided with an opening on the upper surface, and a detachably attached to the annular head portion of the burner body. The cross section has a burner cap formed by pressing into a shape with one end protruding upward from the other end surface, and is detachably attached to the outside of the burner cap, and has an opening A and an opening B on the flame outlet side and the lower side. A ring-shaped covering body having a space portion and an ignition electrode disposed in the space portion of the covering body, a discharge target from the ignition electrode is formed in the space portion, and a swirl shape is formed on the upper surface of the burner cap. A gas stove having an ignition configuration of gas ejected to the gas. 2. The gas stove according to claim 1, wherein a discharge target from the ignition electrode is formed on the flame-composing surface of the burner cap or on the outer peripheral wall of the burner cap, and the gas has a gas-igniting configuration ejected in a swirling manner on the upper surface of the burner cap. The gas stove according to claim 1 or 2, wherein one of the radially arranged flame holes on the upper surface of the burner cap is arranged so as to be positioned substantially at the center of the opening A formed in the space portion of the covering.

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