JP2007139311A - Gas cooking stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas cooking stove capable of improving usability by providing a stove burner reliably performing ignition without defective ignition, and having high combustion performance to achieve high heat efficiency and energy saving. <P>SOLUTION: The stove burner 2 is composed of a burner cap 4 and a burner body 1, the burner cap 4 has burner ports A8 directing to the center and forming flame spurting obliquely upward, an ignition electrode 19 is disposed in a spatial portion 18 formed by a cover body 14 and the burner cap 4 at an outer part 13 of the burner cap 4, an ignition burner port portion 28 is formed on an outer peripheral face of the burner cap 4 opposite to the ignition electrode 19, and the ignition electrode 19 is disposed on its approximately intermediate part. Thus the gas cooking stove 1 having secure ignition performance free from defective ignition, and having secure flame extinction detecting performance, can be provided. <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 and a combustion detection configuration using a extinguishing safety device.

  Conventionally, as an ignition configuration in this type of gas stove, as shown in FIG. 11, in a gas stove 40 having a stove burner 41, the stove burner 41 has a main flame opening 43 arranged on the circumference on the upper surface of the burner body 42. The burner cap 45 having the ignition flame port 44 disposed on a part of the circumference is placed, and the main flame port 43 and the ignition flame port 44 are combusted with the combustion flame 46 and the ignition flame 47 for cooking and heating. It was. In the stove burner 41, the burner cap 45 and the burner body 42 constitute an ignition space 49 in which an ignition electrode 48 is provided, the burner cap 45 facing the ignition electrode 48 constitutes a discharge target 50, and an ignition operation is performed by the gas stove 40. If it does so, it is set as the structure which discharges between the ignition electrode 48 and the discharge target 50, and is the gas stove 40 comprised by opening the ignition flame port 44 in the ignition space 49 (for example, refer patent document 1).

  As shown in FIG. 12, the stove burner is provided with a slit burner 51 on the upper surface of the burner cap 45, and a burner 41 is installed to cope with improved thermal efficiency and energy saving by blowing the flame upward. A gas stove that has been developed has been developed (see, for example, Patent Document 2).

In the gas stove described in this Patent Document 2, although there is no description regarding the ignition configuration, the extinction detection configuration includes a burner cap 45 and a cylindrical portion configured by fitting with the burner body 42 as shown in FIG. A recess 53 is provided in a part of the circumference between the gas seal portion 52 located below, and a combustion confirmation flame port 55 is provided on a side surface 54 of the recess 53. The thermoelectric element portion 56 of the safety device disappears inward of the combustion confirmation flame port 55, and the thermoelectric element portion 56 is heated by the detection flame 57 formed in the combustion confirmation flame port 55 to generate an electromotive force. The safety device is turned off by the presence or absence of electromotive force, so that the combustion of the stove burner 41 can be continued or stopped. Reference numeral 58 denotes a secondary air passage hole 58 provided in the center of the stove burner 41.
JP 2000-283415 A JP 2001-201017 A

However, in the configuration of Patent Document 1, the main flame opening 43 is provided on the circumference to form the combustion flame 46, and the ignition flame opening 44 is provided on the same circumference to form the ignition flame 47. In both cases, a flame is formed and burns toward the outer periphery of the stove burner 41. Therefore, when heating an object to be heated such as a pan for cooking on the gas stove 40, the center portion of the object to be heated is not heated because the combustion flame 46 or the like is not present, 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 article 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. present on the side surface of the object to be heated becomes high temperature, making it difficult to touch directly, and inconvenience in cooking work surface Had. In order to prevent the temperature of the handle or the like from becoming too high, the stove as shown in Patent Document 2 in order to provide a safe gas stove 40 by lowering the temperature of the combustion gas that has flowed to the side of the object to be heated. A burner 41 was provided.
In the gas stove 40 equipped with the stove burner 41, 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 Since the heat exchange between the two is low, the temperature of the handle of the object to be heated is low, so that a safe gas stove can be provided. A combustion confirmation flame port 55 is provided on the side surface 54 facing the secondary air passage hole 58 provided in the center of the burner 41 to heat the thermoelectric element portion 56, and a temperature sensor 59 is provided in the secondary air passage hole 58. Therefore, when combustion starts at the main flame opening 43, the combustion continues in a state in which a swirling flow is generated by flowing obliquely upward along the circumference. Similarly for secondary air Is flowing in the flame 57 presents a circumfluence state. Accordingly, since the swirl flow of air is also generated in the region where the combustion confirmation flame port 55 is formed, the flame 57 of the combustion confirmation flame port 55 is blown away by the swirl flow under the influence of the surrounding swirl flow. As a result, there was a problem that a problem of extinguishing the fire occurred.

  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, in addition to 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 possible to improve energy saving and thermal efficiency by providing a configuration for detecting extinction without blowing out. The purpose is to provide an inexpensive gas stove that is easy to manufacture in terms of manufacturing.

  In order to solve the above-mentioned problems, a gas stove according to the present invention has an annular head having an opening on the upper surface, and a burner body that mixes the supplied gas and combustion air, and the annular head of the burner body can be attached and detached. A flame outlet A having a cross-sectional shape with one end projecting upward from the other end face is disposed radially at equal intervals toward the center to form a main flame mouth portion, and supplied from the burner body A ring-shaped burner cap that ejects a mixed gas to form a flame in a swirling manner, and a ring portion that is detachably attached to the outside of the burner cap and that has a space portion having openings A and B on the flame outlet side and the lower side. A covering body, an ignition electrode disposed in a space portion of the covering body, and a thermoelectric element portion of the extinguishing safety device disposed outside the burner cap at a position facing the ignition electrode. Shaped discharge target from In addition, the outer peripheral wall of the burner cap that opposes the discharge space between the ignition electrode and the discharge target is an ignition flame port portion that has a flame port B and a flame port C that are arranged so that one end protrudes from the other surface. , And a gas mixture supplied from the burner body is ejected to form a collision flame, and a discharge space portion is disposed substantially in the middle of the ignition flame opening.

  According to the above invention, the gas from the radial flame port formed on the upper surface of the burner cap is ejected at a speed obliquely upward, so that a swirl flow is formed and the gas is ejected to form at the flame port. The burned flame exhibits swirl combustion. 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, and the combustion Sufficient secondary air is supplied to the flame to achieve complete combustion. This complete combustion can provide a safe gas stove that does not generate carbon monoxide or the like.

Further, a covering body provided with a space portion having an opening A having one end opened to the flame opening A side and an opening B having the other end opened to the lower side outside the flame opening is disposed outside the burner cap, An ignition electrode is included in the portion, a discharge target from the ignition electrode is formed in the space portion, a discharge space portion is provided between the ignition electrode and the discharge target to constitute an ignition portion, and a burner cap facing the discharge space portion is formed. On the outer peripheral wall, an ignition flame port portion having a cross-section in which one end protrudes from the other end surface and an ignition flame port portion arranged so as to face each other is formed, so that the gas ejected from the flame port on the upper surface of the burner cap is oblique Since it is ejected at a speed upward, it exhibits a swirling flow. 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. Further, the gas ejected from the flame mouth B and the flame mouth C collides in the discharge space and exists as a collision flow. Therefore, 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 and coexists with the collision flow. When discharging from the ignition electrode toward the discharge target in a state where such a swirl flow and a collision flow are generated, there is a gas flowing in the swirl flow and a gas flowing in the collision flow reliably in the discharge space. It is 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 electric discharge is surely performed without causing electrical leakage. In addition, when the upper surface of the burner cap provided with the flame outlet A changes for some reason, for example, even if a situation occurs in which unevenness is generated due to adhesion of cooked food or the like and the swirl flow is not normally formed, the collision flow is generated. Since it exists in the discharge space, it is possible to provide an easy-to-use gas stove by reliable ignition.

  Further, in the stove burner that is ignited by the above-described ignition configuration and forms a swirling main flame on the upper surface of the burner cap, a flame outlet D having a cross-section with one end projecting from the other end surface at an appropriate position on the outer peripheral wall of the burner cap. And the flame outlet E are arranged so as to face each other, and the mixed gas supplied from the burner body is ejected to form a collision flame, and the safety device disappears at a substantially intermediate portion of the auxiliary flame mouth portion. By arranging the thermoelectric element portion, gas is ejected from the flame outlet D in the circumferential direction of the outer periphery of the burner cap, and from the flame outlet E in the circumferential direction opposite to the gas ejected from the flame outlet D. Erupts. Therefore, the gas ejected from the flame port D and the gas ejected from the flame port E are in a flow state of colliding at a substantially intermediate portion between the flame port D and the flame port E. Therefore, when combustion is started at the flame mouth D and the flame mouth E, a flame formed at the time of combustion forms a collision flame between the flame mouth D and the flame mouth E.

  At the same time, a swirl flow is presented at the flame outlet A, and combustion is continued and a swirl flow of secondary air is generated around the stove burner, so that the impinging flame is also blown away because it is formed in the swirl flow. The swirl flow acts as shown above, but the gas from the flame outlet D is jetted in the direction opposite to the jet direction from the flame mouth E. In this way, the collision flame continues without being blown away, and the thermoelectric element portion of the safety device disappears stably and is heated by the collision flame. Accordingly, it is possible to provide a stove with good usability that does not cause a problem of disappearing during use.

  In addition, a flame mouth A having a cross-section with one end projecting upward from the other end surface is provided at equal circumferential intervals toward the center of the burner cap, and a planar portion is provided at both ends of the flame mouth portion to provide a flame mouth dimension. It has a shape that reduces the variation in the size, and is configured so that it can be fully pressed, including the flame opening, which makes it easy to manufacture and inexpensive.

  In addition, the main flame mouth part has a swirling flow due to the force that blows out in the circumferential direction and the force that exhaust heat is further exhausted from the upper direction through the bottom of the pan, resulting in a secondary secondary in the center. More secondary air can be sucked from the air passage hole and good combustion can be obtained. Furthermore, the bottom of the pan and the burner can be brought closer to each other, and energy saving and thermal efficiency can be improved.

The gas stove of the present invention has a reliable ignition performance that is resistant to spillage of boiled juice with energy saving with improved thermal efficiency, and forms a collision flame along the outer peripheral wall of the burner cap,
By disposing the thermoelectric element portion of the safety device that disappears in the flame, stable combustion detection without disappearing can be performed, and a gas stove that is easy to use can be provided.

  1st invention has the annular head which provided the opening in the upper surface, the burner body which mixes the gas and combustion air which are supplied, and it attaches to the annular head of a burner body so that attachment or detachment is possible, and one end is from an other end surface A flame outlet A having a cross-sectional shape projecting upward is arranged radially at equal intervals toward the center to form a main flame outlet, and swirls by ejecting a mixed gas supplied from the burner body A burner cap that forms a flame in the form of a ring, a ring-shaped covering body that is removably attached to the outside of the burner cap, and has a space portion having openings A and B on the flame outlet side and the lower side, An ignition electrode disposed in the space, and a thermoelectric element portion of the extinguishing safety device disposed outside the burner cap at a position facing the ignition electrode, and a discharge target from the ignition electrode is formed in the space. , Between ignition electrode and discharge target On the outer peripheral wall of the burner cap that faces the discharge space, an ignition flame port is formed that has a flame port B and a flame port C facing each other with a cross-section with one end protruding from the other end surface, and is supplied from the burner body. The mixed gas is ejected to form a collision flame, and a discharge space portion is disposed substantially in the middle of the ignition flame opening.

  As a result, a swirl flame with high thermal efficiency can be formed on the upper surface side of the burner cap, and a reliable ignition configuration using an ignition flame opening portion combined with a gas ejection form that forms a swirl flow can be secured. Furthermore, there is no blow-off phenomenon due to the collision flame of the auxiliary flame opening formed on the outer peripheral wall of the burner cap, and stable combustion detection can be performed by continuously heating the thermoelectric element portion.

  According to a second aspect of the present invention, a discharge target from the ignition electrode is formed on the flame outlet A constituting surface of the burner cap or on the outer peripheral wall of the burner cap, and the ignition structure of the gas ejected in a swirling manner on the upper surface of the burner cap and It has an ignition flame port portion provided to face a discharge space portion formed between the ignition electrode and the discharge target.

  As a result, the discharge space between the ignition electrode and the discharge target is configured closer to the flame outlet A from which gas is ejected, so that a collision between the gas presenting a swirling flow in the discharge space and the ignition flame port during discharge Since the gas presenting the flow is surely present, a reliable ignition performance can be obtained.

  According to a third aspect of the invention, one of the radially arranged flame openings on the upper surface of the burner cap is located substantially at the center of the opening A formed in the space portion of the covering, and is located substantially at the middle of the flame openings B and C. It arrange | positions so that it may carry out.

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.
4th invention forms the ignition flame mouth part which arrange | positioned the flame mouth B and the flame mouth C which had the cross section which made the one end protruded outward from the other end surface on the burner cap outer peripheral wall, An ignition electrode and a discharge target are provided in a substantially middle portion between the flame mouth B and the flame mouth C.

  Thereby, the collision phenomenon of the gas ejected from the flame mouth B and the flame mouth C occurs. Since the ignition flame generated by this collision phenomenon is formed, the flame mouth is reliably ignited by the stable ignition flame against the swirling flow, so the ignition flame from the ignition flame blown off is fired from the main flame mouth. There is no transfer failure. Therefore, since the hot flame is surely generated from the combustion flame formed in the main flame opening in the heating flame, it is possible to provide a gas stove 1 that is easy to use and does not disappear.

According to a fifth aspect of the present invention, the flame mouth B and the flame mouth C forming the ignition flame mouth portion are provided with a flat portion on the flame mouth surface formed by projecting one end from the other end surface, and along the outer peripheral wall surface of the burner cap. It is characterized by forming opposing flames.

  Thereby, since the ignition flame mouth part is comprised by the flame mouth B and the flame mouth C which provided the plane part in the flame face, since the flow direction of the gas to be ejected is regulated, gas is flowed along the parallel part. It ejects in the tangential direction of the outer periphery of the burner cap. Therefore, the collision flame obtained by jetting from both flame outlets has a collision point near the outer periphery of the burner cap, so a negative pressure region is formed between the collision point and the outer wall of the burner cap, and the Coanda effect is more stable. An ignition collision flame is obtained.

  Further, when pressing, the flat part is applied to the mold, and the flame opening B and the flame opening C having a slit width dimension with little variation are obtained.

  In the sixth aspect of the present invention, a flame port F that jets a mixed gas in a direction different from the jet direction of the flame port B and the flame port C is provided between the flame port B and the flame port C that form the ignition flame port part. It is characterized by this.

  As a result, a flame is formed outward from the outer peripheral wall of the burner cap at the substantially intermediate portion of the collision flame formed along the outer peripheral wall of the burner cap, and burns out. The amount of gas increases, the ignition flame volume increases, and ignition is more reliable. At the same time, even if the position of the ignition electrode or discharge target is slightly misaligned due to assembly variations, a large amount of gas is secured and stable. Ignition performance is obtained.

  In addition, even when the gas supply pressure to the burner is reduced when the gas stove is used, the amount of ignition gas decreases due to a change in the amount of combustion at the time of ignition, so the flame B, flame C, and flame F Since the gas is ejected from the outlet B, the amount of gas is larger than the amount of gas ejected from the flame outlet B and the flame outlet C. Since the amount can be secured, the gas stove can be used safely without being ignited without being ignited.

  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.
FIG. 6 is a diagram showing the relationship between the flame mouth B and the flame mouth C constituting the ignition flame port portion formed on the outer peripheral wall of the burner cap, and FIG. 7 is a sectional view showing the AA cross section of the ignition flame port portion. It is.

In the figure, reference numeral 1 denotes a gas stove having a stove burner 2, and the stove burner 2 has an annular head having an opening on the upper surface, and a burner body 3 for mixing supplied gas and combustion air, and this burner body. 3, the burner cap 4 is press-worked with a stainless material or the like, and the gas seal portion is a cylindrical portion 6 of the central secondary air passage hole 5 and an outer cylindrical portion 7. It consists of two places. A burner cap 4 is placed on the burner body 3 to form a secondary air passage hole 5. Further, on the upper surface side of the burner cap 4, a flame port A 8 having a cross-sectional shape with one end projecting upward from the other end surface is radially arranged toward the center side at equal intervals around the main flame port portion 8 A. The shape of the flame opening A8 is such that one end 9 protrudes upward from the other end face 10 and the flame opening slit width 11 is formed by press working, and the gas ejection from the flame opening slit width 11 is obliquely upward. It is intended to face. A swirling flow is generated by the main flame 12 flowing obliquely upward along the circumference, and by sucking and supplying the secondary air from the secondary air passage hole 5 at the center of the burner cap 4, optimal good combustion is achieved. can get.

  In addition, when the main flame 12 is obliquely upward, the flame mouth A8 part generates a swirling flow due to the force that blows out in the circumferential direction and the force that exhaust heat is further discharged from the upper direction through the bottom of the article 24 to be heated. Thus, more secondary air can be sucked from the central secondary air passage hole 5 and good combustion can be obtained. Therefore, 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.

  Further, a cover 14 is provided on the outer side 13 of the burner cap 4, and an opening A 16 is formed on the outer side 13 of the main flame opening 8 A and an opening B 17 is formed on the lower side of the outer side 13. The space 18 is provided, the ignition electrode 19 is provided in the space 18, the convex discharge target 20 is formed above the space 18 corresponding to the ignition electrode 19, and the space between the ignition electrode 19 and the discharge target 20 is On the outer peripheral wall 15 of the burner cap 4 facing the space 18 is formed an ignition flame port 23 having a flame port B21 having a cross section with one end projecting from the other end surface and a flame port C22 facing each other. 3 is ejected to form a collision flow, and a discharge space portion 18A is formed in a substantially intermediate portion of the ignition flame port portion 23 to constitute an ignition portion, whereby a combustion portion of the gas stove 1 is constituted. ing. Reference numeral 26 denotes a gotok 26 placed on the upper surface 27 of the gas stove 1 on which the heated object 24 is placed and used for cooking or the like. 28 is an ignition flame formed in the discharge space portion 18A of the ignition flame opening 23. Reference numeral 29 denotes a heating flame that heats the thermoelectric element portion 32 that detects the presence or absence of combustion in the extinguishing safety device formed by the collision flow caused by the blowing of gas from the flame mouth D30 and the flame mouth E31 formed in the outer peripheral wall 15 of the burner.

  As a result, when the operation portion of the gas stove 1 is ignited, the flame outlet A8 of the burner cap 4 of the stove burner 2 is constituted by the flame slit width 11, so that the gas ejection from the flame outlet A8 is directed 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 A8 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 to 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. At the same time, gas is jetted counterclockwise from the flame outlet B21, and gas is jetted clockwise from the flame outlet C22 to coexist as a collision flow in the discharge space portion 18A. In such a state where the swirl flow and the collision flow coexist, when the electric discharge is performed from the ignition electrode 19 toward the discharge target 20, the ignition is reliably performed and the ignition flame 28 formed by the flame port B21 and the flame port C22 is ignited. The gas ejected from the main flame opening 8A as a source starts burning. Combustion is obtained by sucking and supplying secondary air from the central secondary air passage hole 5 to obtain optimum good combustion.

  Further, the gas is ejected in a direction in which both collide in the tangential direction of the outer peripheral wall 15 of the burner cap 4. Accordingly, since the ignition flame 28 obtained by jetting from both flame openings forms a collision point in the vicinity of the outer peripheral wall 15 of the burner cap 4, a negative pressure region is formed between the collision point and the outer peripheral wall of the burner cap 4. Since the Coanda effect occurs and a more stable ignition flame 28 is obtained, more stable ignition and combustion can be obtained.

Further, the main flame opening 8A is swirled by the force that is blown out in the circumferential direction when the main flame 12 is obliquely upward, and the force that exhaust heat is further discharged from the upper direction through the bottom of the object 24 to be heated. As a result, more secondary air can be sucked in from the central secondary air passage hole 5 and good combustion can be obtained. Accordingly, when the object to be heated 24 is heated by swirl combustion, a phenomenon occurs in which the combustion gas is forcibly stirred by the swirl flow, resulting in a turbulent flow state. 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.

  Further, since the ignition electrode 19 is covered with the covering 14 that constitutes the space portion 18, even if boiled juice spills or spills during cooking from the article to be heated 24 or the like, Since it does not become dirty, it discharges reliably without causing electrical leakage, so that it is possible to provide an easy-to-use gas stove 1 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. Since there is no phenomenon that protrudes to the outer side 13, there is no interference between the ignition flame 28 and the combustion flame formed at the flame outlet A 8. A safe and economical gas stove 1 with little heat loss can be provided.

  Further, in the stove burner 2 that is ignited by the above-described ignition configuration and forms the swirling main flame 12 on the upper surface of the burner cap 4, a cross-section in which one end protrudes from the other end surface at the outer peripheral wall 15 of the burner cap 4. The auxiliary flame mouth portion is arranged so that the flame mouth D30 and the flame mouth E31 facing each other are formed, and the mixed gas supplied from the burner body 3 is ejected to form the heating flame 29. By disposing the thermoelectric element portion 32 of the safety device in the middle portion, gas is ejected from the flame outlet D30 in the circumferential direction of the outer periphery of the burner cap 4, and from the flame outlet E31, the gas ejected from the flame mouth D30 Erupts in the opposite circumferential direction. Accordingly, the gas ejected from the flame port D30 and the gas ejected from the flame port E31 are in a flow state of colliding at a substantially intermediate portion between the flame port D30 and the flame port E31. Therefore, when combustion is started at the flame mouth D30 and the flame mouth E31, the heating flame 29 formed at the time of combustion forms a collision flame between the flame mouth D30 and the flame mouth E31.

  At the same time, a swirling flow is produced at the flame outlet A8 and combustion is continued, so that a swirling flow of secondary air is generated around the stove burner 2, so that the impinging flame is also blown away because it is formed in the swirling flow. However, since the gas from the flame outlet D30 is ejected in the direction opposite to the ejection direction from the flame outlet E31, the flow is opposed to the swirl flow and is balanced with the force of the swirl flow. As a result, the collision flame continues to burn stably without being blown off, and the thermoelectric element portion 32 of the safety device is stably heated by the collision flame. Therefore, it is possible to provide a gas stove 1 that is easy to use and does not cause a problem of disappearing during use.

  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. 8 shows a cross-sectional view of the ignition component of the second embodiment of the present invention, and the ignition configuration of the second embodiment of the present invention will be described using the drawing.
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 33 from the ignition electrode 19 is configured on the component surface of the flame outlet A8 of the burner cap 4 or on the outer peripheral wall 15 of the burner cap 4.

As a result, the discharge space between the ignition electrode 19 and the discharge target 33 is configured closer to the flame outlet from which the gas is ejected, so that the gas presenting a swirling flow is surely present in the discharge space during discharge. Ignition performance is obtained.

(Embodiment 3)
The ignition configuration of the third embodiment of the present invention will be described with reference to the diagram shown in the first 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 flame mouth A8 processed by press molding is located at the approximate center of the opening A16 opened on the side of the main flame mouth 8A on the outer side 13 of the main flame mouth 8A, and located substantially at the center of the flame mouth B21 and the flame mouth C22. 1 is a gas stove 1 having an ignition configuration.

  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 A8 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.

(Embodiment 4)
The ignition configuration of the fourth embodiment of the present invention will be described with reference to the diagram shown in the first embodiment.
In addition, the same number is attached | subjected to the same function and effect | action as another embodiment, and description is abbreviate | omitted.

  In the figure, on the outer peripheral wall 15 of the burner cap 4, an ignition flame port portion in which a flame port B 21 and a flame port C 22 having a cross section in which one end 9 protrudes outward 13 from the other end surface 10 is arranged to face each other. 23, and the ignition electrode 19 and the discharge target 20 are provided in a substantially middle portion between the flame mouth B21 and the flame mouth C22.

  Thereby, the collision phenomenon of the gas ejected from the flame opening B21 and the flame opening C22 occurs. Since the ignition flame 28 generated by this collision phenomenon is formed, the flame A8 is surely ignited by the stable ignition flame 28 that opposes the swirling flow, so that the main flame is changed from the ignition flame caused by the blow-off of the ignition flame 21. There is no fire transfer to the mouth 8A. Therefore, since the hot flame is surely generated from the combustion flame formed in the flame opening A8 in the heating flame 29, it is possible to provide a gas stove 1 that is easy to use and does not disappear.

(Embodiment 5)
FIG. 9 shows the cross-sectional shapes of the flame mouth B and the flame mouth C according to the fifth embodiment of the present invention.
In addition, the same number is attached | subjected to the same function and action as Embodiment 1, and description is abbreviate | omitted.

  In the figure, a gas stove 1 having a stove burner 2 comprising an ignition flame mouth portion 23 in the shape of a slit width 37 having a flat portion 36 provided at one end 34 and the other end 35 of the flame mouth B21 and the flame mouth C22 of the burner cap 4. It is.

  Thereby, since the outlets of the flame outlet B21 and the flame outlet C22 have the flat portion 36, the flow direction is restricted, so that the gas flows along the flat portion 36 in the tangential direction of the outer peripheral wall 15 of the burner cap 4. It spouts in the direction where both collide. Accordingly, since the ignition flame 28 obtained by jetting from both flame ports forms a collision point in the vicinity of the outer peripheral wall 15 of the burner cap 4, a negative pressure region is generated between the outer peripheral walls of the burner cap 4 by a flow centered on the collision point. As a result, the Coanda effect occurs and a more stable ignition flame 28 is obtained, so that more stable combustion is obtained.

  Further, during the press working, the flame port B21 and the flame port C22 having a slit width 37 with little variation are obtained by placing the flat portion 36 on the mold.

(Embodiment 6)
FIG. 10 is a diagram illustrating a flame mouth configuration state in which the ignition flame mouth thermoelectric element portion according to the sixth embodiment of the present invention is heated. In addition, the same number is attached | subjected to the function and effect | action equivalent to other embodiment, and description is abbreviate | omitted.

  A stove burner 2 provided with a flame port F38 for ejecting a mixed gas in a direction different from the ejection direction of the flame port B21 and the flame port C22 between the flame port B21 and the flame port C22 formed on the outer peripheral wall 15 of the burner cap 4 is provided. It is the gas stove 1 it has.

  As a result, the ignition flame 28 formed at the flame mouth B21 and the flame mouth C22 coexists with the flame formed at the flame mouth F38 in the center and burns in an integrated state, so that the entire flame volume As a result, the ignition becomes more reliable, and at the same time, even if the position of the ignition electrode 19 or the discharge target 20 is slightly displaced due to assembly variations, a large amount of gas is secured, so that stable ignition performance can be obtained. .

  Further, even when the gas supply pressure supplied to the burner 2 is reduced when the gas stove is used and the amount of ignition gas decreases due to a change in the amount of combustion during ignition, the flame outlet B21, the flame outlet C22, and the flame outlet Since the gas is ejected from F38, it is a change from the state in which the amount of gas is larger than the amount of gas ejected from only the flame port B21 and the flame port C22. Since the amount of gas can be secured, the gas stove 1 can be used with confidence without being ignited and not usable.

  As described above, the gas stove according to the present invention can provide reliable ignition and good combustion, and can be applied to uses such as a safe and easy-to-use cooker with stable extinction detection performance.

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 External view showing the relationship between the flame ports B and C constituting the ignition flame part formed on the outer peripheral wall of the stove and a sectional view of the flame nozzle BB sectional view of the ignition flame opening of the stove Sectional drawing of the ignition part in Embodiment 2 of this invention Sectional drawing of the flame mouths B and C in Embodiment 5 of this invention The appearance of the ignition flame mouth part showing the relationship between the flame mouth B, the flame mouth C, and the flame mouth D in Embodiment 6 of the present invention, and a sectional view of the flame mouth Side view of a conventional stove burner Side sectional view of another conventional stove

Explanation of symbols

1 gas stove 2 stove burner 3 burner body 4 burner cap 8 flame outlet A
8A Main flame opening 14 Cover 15 Outer wall 16 Opening A
17 Opening B
18 Space 18A Discharge Space 19 Ignition Electrode 21 Flame B
22 Flame C
23 Ignition Flame Port 30 Flame Port D
31 Flame outlet E
32 Thermoelectric element part 36 Plane part 38 Flame outlet F

Claims (6)

A burner body that has an annular head with an opening on the upper surface and that mixes the supplied gas and combustion air, and is detachably attached to the annular head of the burner body, with one end protruding above the other end. A flame outlet A having a cross-sectional shape is radially arranged at equal circumferential intervals toward the center side to form a main flame mouth portion, and a mixed gas supplied from the burner body is ejected to produce a swirling flame. A burner cap to be formed, a ring-shaped covering body which is removably attached to the outside of the burner cap, and has a space portion having an opening A and an opening B on the flame outlet side and the lower side, and a space of the covering body And a thermoelectric element portion of the extinguishing safety device arranged outside the burner cap at a position facing the ignition electrode, and forming a discharge target from the ignition electrode in the space portion And the ignition electrode On the outer peripheral wall of the burner cap that faces the discharge space between the discharge targets, an ignition flame mouth portion is provided in which the flame mouth B and the flame mouth C having a cross-section with one end projecting from the other end surface are opposed to each other, A gas stove in which a mixed gas supplied from a burner body is ejected to form a collision flame, and the discharge space portion is disposed at a substantially middle portion of the ignition flame opening. It has a gas ignition configuration in which a discharge target from the ignition electrode is formed on the flame outlet A configuration surface of the burner cap or on the outer wall of the burner cap, and the ignition flame port is arranged on the outer wall of the burner cap facing the discharge space. The gas stove according to claim 1. One of the flame outlets A arranged radially on the upper surface of the burner cap is located at the approximate center of the opening A formed in the space portion of the covering, and is positioned at the approximate center of the flame mouth B and the flame mouth C. The gas stove according to any one of claims 1 to 2. On the outer wall of the burner cap, there is formed an ignition flame port portion in which a flame port B having a cross section with one end projecting outward from the other end surface and a flame port C are arranged to face each other. The gas stove according to claim 1, wherein an ignition electrode and a discharge target are provided in a substantially middle part of the mouth C. The flame mouth B and the flame mouth C that form the ignition flame portion are provided with a flat portion on the flame mouth surface formed by projecting one end from the other end surface, and form opposed flames along the outer peripheral wall surface of the burner cap. The gas stove according to claim 1, wherein the gas stove is made. 6. A flame port F for ejecting a mixed gas in a direction different from the ejection direction of the flame port B and the flame port C is provided between the flame port B and the flame port C forming the ignition flame port part. A gas stove according to any one of the preceding claims.

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