Gas burner head and heating device

Abstract

The present disclosure aims to provide a gas burner head and heating device that stabilize the flame even when objects fall from the object being heated from above when the flame is directed upwards. [Solution] The gas burner head is a gas burner head that forms a single flame and comprises a gas supply port formed at the end of the flow path of combustible gas and ejecting combustible gas as a jet, and a flame holder positioned in the jet of combustible gas supplied from the gas supply port, having a conical portion that guides the jet of combustible gas while expanding it from the gas supply port, and the flame holder that hides the gas supply port when viewed from the downstream side of the jet of combustible gas.

Description

Technical Field

[0001] The present disclosure relates to a gas burner head and a heating device.

Background Art

[0002] Patent Document 1 discloses a burner head for an outdoor stove that is excellent in wind resistance and enables powerful heating by using a large-diameter burner head.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when the gas supply port of the heating device is arranged below the object to be heated and the object to be heated is directly heated, the falling objects from the object to be heated may block the gas supply port and the flame may not be stable.

[0005] An object of the present disclosure is to provide a gas burner head and a heating device in which the flame is stable even when falling objects from the object to be heated fall from above when the flame is directed upward.

Means for Solving the Problems

[0006] The gas burner head of the first aspect is a gas burner head that forms a single flame, and includes a gas supply port that is formed at an end of a flow path of a combustible gas and ejects the combustible gas as a jet, and a flame retainer that is disposed in the jet of the combustible gas supplied from the gas supply port and has a conical portion that guides the jet of the combustible gas while expanding it from the gas supply port, and the flame retainer that hides the gas supply port when viewed from the downstream side of the jet of the combustible gas.

[0007] In this embodiment of the gas burner head, the gas supply port is concealed by a flame holder. The flame holder also guides the jet of flammable gas, spreading it wider than the gas supply port. As a result, in the gas burner head according to this disclosure, even when the flame is directed upward and the object to be heated is positioned above the gas supply port, the gas supply port is less likely to be blocked by the object to be heated. Therefore, with this embodiment of the gas burner head, the upward-directed flame can be stabilized even when objects fall from the object to be heated from above.

[0008] In the gas burner head of the second embodiment, the flame holder is formed downstream of the jet of flammable gas from the conical portion and further has a retraction portion that guides the jet of flammable gas along its surface.

[0009] The gas burner head according to this embodiment has a draw-in section downstream of the conical section from the jet of combustible gas in the conical section, which guides the jet of combustible gas along the surface. Therefore, with the gas burner head according to this embodiment, the combustible gas flows more easily in the desired direction along the draw-in section after its flow has been widened beyond the gas supply port by the conical section.

[0010] As a result, in this embodiment of the gas burner head, the inadvertent diffusion of the flame can be suppressed compared to the case where the intake portion is not formed in the flame holder.

[0011] In the third embodiment of the gas burner head, the flame holder further comprises a columnar portion formed downstream of the jet of combustible gas from the conical portion and extending in the direction toward the gas supply port, in the gas burner head described in the first embodiment.

[0012] The gas burner head according to this embodiment has a columnar portion extending downstream of the jet of combustible gas in the conical portion, along the direction toward the gas supply port. Therefore, with the gas burner head according to this embodiment, the combustible gas flows along the columnar portion in the direction of the jet after its flow has been widened beyond the gas supply port by the conical portion.

[0013] As a result, in this embodiment of the gas burner head, the inadvertent diffusion of the flame can be suppressed compared to the case where the columnar portion is not formed as a flame holder.

[0014] In the fourth embodiment of the gas burner head, in the gas burner head described in any one of the first to third embodiments, the flame holder forms an ignition chamber in which an igniter is arranged, the ignition chamber is connected by an opening to the space through which the jet flows, and the opening is hidden when viewed from the downstream side of the jet of flammable gas.

[0015] In this embodiment, the gas burner head has an ignition chamber in which an igniter is positioned inside the flame holder. The ignition chamber is connected to the space through which the flammable gas jet flows, with its opening concealed from view downstream of the flammable gas jet.

[0016] Therefore, according to this embodiment of the gas burner head, it is possible to ignite the flammable gas and form a flame. Furthermore, according to this embodiment of the gas burner head, compared to the case where the igniter is exposed downstream of the flammable gas jet, the possibility of ignition failing due to falling objects from the object to be heated hitting the igniter can be suppressed.

[0017] The heating device of the fifth embodiment comprises a gas burner head described in any one of the first to fourth embodiments, and a gas supply unit that supplies combustible gas to the flow path of the combustible gas. [Effects of the Invention]

[0018] According to this disclosure, it is possible to provide a gas burner head and heating device that stabilize the flame even when objects fall from the object being heated from above when the flame is directed upward. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view illustrating a heating device according to the first embodiment. [Figure 2A] It is a diagram for explaining the gas burner head of the heating device according to the first embodiment, and is a front view of the gas burner head. [Figure 2B] It is a diagram for explaining the gas burner head of the heating device according to the first embodiment, and is a plan view of the gas burner head. [Figure 3] It is a diagram for explaining the gas burner head of the heating device according to the first embodiment, and is a cross-sectional view of the gas burner head. [Figure 4] It is a diagram for explaining the gas burner head of the heating device according to the first embodiment, and is a diagram for explaining the state in which the combustible gas flows around the gas burner head. [Figure 5] It is a diagram for explaining the gas burner head of the heating device according to the first embodiment, and is a diagram for explaining the state in which the combustible gas flowing around the gas burner head burns. [Figure 6] It is a diagram for explaining the gas burner head of the heating device according to the first embodiment, and is a diagram for explaining the state of heating a heatable object to be melted arranged above the heating device. [Figure 7] It is a diagram for explaining the gas burner head of the heating device according to the second embodiment, and is a front view of the gas burner head.

Embodiments for Carrying Out the Invention

[0020] Hereinafter, an example of an embodiment of the present disclosure will be described while referring to the drawings. In each drawing, the same or equivalent components and parts are given the same reference numerals. Also, the dimensional ratios in the drawings are exaggerated for the convenience of explanation and may be different from the actual ratios.

[0021] In the description according to the present disclosure, when referring to a shape, manufacturing errors may be included. For example, when explaining using specific shapes such as "circular", "linear", "planar", etc., or comparative terms such as "identical", "equivalent", etc., it is sufficient if the shape is considered to be such when viewed macroscopically, and it may include distortions, undulations, roughness, and other industrially acceptable errors.

[0022] Furthermore, in each figure, arrow H is in the vertical direction and indicates the upward direction of the heating device 100, arrow W is in the horizontal direction and indicates the width direction of the heating device 100, and arrow D is in the horizontal direction and indicates the depth direction of the heating device 100.

[0023] [First Embodiment] (composition) Figure 1 shows a heating device 100 according to a first embodiment of the present disclosure. As shown in Figure 1, the heating device 100 includes a gas burner head 110 to which a flame holder 122 is attached, and a gas supply unit 138 that supplies flammable gas to the gas burner head 110. The flame holder 122 is provided at the end of the gas burner head 110 and has a flow path for flammable gas inside.

[0024] The gas supply unit 138 supplies flammable gas to the gas burner head 110 at a predetermined flow rate and pressure. For example, the gas supply unit 138 supplies flammable gas that has been pre-mixed with air. In this disclosure, the type of flammable gas is not particularly limited. Examples of flammable gases include hydrocarbon gases (methane, ethane, propane, etc.).

[0025] The gas burner head 110, with the flame holder 122 attached, flows flammable gas toward the flame holder 122. The specific configuration of the gas burner head 110 can be set as appropriate, but in this embodiment, as an example, a T-shaped joint connected in three directions can be used. More specifically, in this embodiment, the T-shaped joint is formed from a main pipe 114 extending vertically and having a circular cross-section, and a branch pipe 116 connected horizontally to the main pipe 114.

[0026] The lower side of the main pipe 114 is sealed by a nut 118 with a threaded hole drilled in the radial center. A support shaft 120 is attached to the threaded hole of the nut 118, extending through the inside of the main pipe 114 to the upper end of the main pipe 114. A flame holder 122 is attached to the upper side of the support shaft 120, i.e., the upper side of the main pipe 114. The support shaft 120 is located in the radial center of the main pipe 114. In other words, the flame holder 122 is positioned so that its axis coincides with that of the main pipe 114. Flammable gas is supplied to the branch pipe 116 from the gas supply unit 138.

[0027] Furthermore, the gas supply port 112, which is the upper open end of the main pipe 114, ejects flammable gas as a jet 160.

[0028] Figures 2A, 2B, and 3 illustrate the specific shape of the flame holder 122. As shown in Figures 2A and 2B, the flame holder 122 has a conical portion 124 that widens more at the top than at the bottom, and a columnar portion 126 that extends upward from the conical portion 124. The horizontal cross-section of the flame holder 122 is circular.

[0029] The lower side of the conical portion 124 is connected to the upper end of the support shaft 120, as shown in Figures 2A and 3. The conical portion 124 also widens uniformly from bottom to top, for example. In other words, when the conical portion 124 is viewed from the front, its slope forms a straight line. Furthermore, as shown in Figures 2A, 2B, and 3, the diameter of the widest part of the conical portion 124 (i.e., the upper end of the conical portion 124) is larger than the diameter of the main pipe 114. In other words, as shown in Figure 3, in a plan view, the conical portion 124 is shaped to conceal the gas supply port 112 of the main pipe 114.

[0030] The columnar sections 126 have the same diameter, as shown in Figures 2A and 3. The columnar sections 126 also have an ignition chamber 130 containing an igniter 132. The ignition chamber 130 houses the igniter 132, as shown in Figure 3.

[0031] The igniter 132 is capable of generating a spark between itself and the upper plate 136, which forms the upper wall surface (i.e., the inner wall surface of the ignition chamber 130, and the upper wall surface of the columnar portion 126). The ignition chamber 130 is capable of igniting the flammable gas inside the ignition chamber 130 by a so-called spark ignition method. The power to generate a spark in the igniter 132 is supplied via a plug cord that passes through the inside of the conical portion 124 and the inside of the support shaft 120, as shown in Figure 3. In other words, the support shaft 120 is hollow, allowing the plug cord to pass through. At the lower end of the support shaft 120, the plug cord is connected, for example, to a piezoelectric element, and by being electrically connected to the support shaft 120 and the flame holder 122, it forms an electrical circuit for ignition.

[0032] Furthermore, as shown in Figures 2A and 3, the ignition chamber 130 is connected to the outside of the columnar section 126 via an opening 134. More specifically, as shown in Figures 2A and 3, the opening 134 of the columnar section 126 is opened around the horizontal perimeter of the columnar section 126. That is, as shown in Figure 2B and the like, the upper plate 136, which is the upper surface of the columnar section 126, is flat.

[0033] In this embodiment, the term "columnar body" includes both hollow structures like tubes and solid structures like rods.

[0034] As shown in Figures 1 and 2A, the vertical position of the flame holder 122, or in other words, the size of the gas supply port 112 (i.e., the gap at the upper open end of the main pipe 114), is set as appropriate. One example of a setting method is to rotate the support shaft 120 and the nut 118 relative to each other, thereby moving the support shaft 120 vertically and setting the vertical position of the flame holder 122 supported by the support shaft 120.

[0035] Next, the method of use and operation of the flame holder 122 and heating device 100 according to this embodiment will be explained with reference to Figures 4 to 6.

[0036] (How to use and operate) Figure 4 shows how, in the heating device 100 of this embodiment, a flammable gas (more specifically, a flammable gas premixed with air) is supplied to the gas burner head 110, and the flammable gas is blown upward from the main pipe 114 as a jet 160. Here, the flammable gas is blown from the main pipe 114 toward the flame holder 122, and flows along the surface of the flame holder 122.

[0037] More specifically, as shown in Figure 4, the flammable gas is guided by the cone-shaped portion 124 radially (i.e., horizontally) outward from the cone-shaped portion 124. In other words, the diameter of the flammable gas jet 160 guided by the cone-shaped portion 124 is greater than the inner diameter of the gas supply port 112. In other words, the flammable gas jet 160 is expanded beyond the gas supply port 112 by the cone-shaped portion 124.

[0038] Furthermore, the flammable gas is guided upward along the surface of the columnar portion 126 by the columnar portion 126 (i.e., while horizontal diffusion is suppressed). Also, at the upper end of the columnar portion 126 (i.e., the upper end of the flame holder 122), the flammable gas flows upward. The flammable gas then gathers on the upper side of the columnar portion 126 toward the radial center of the columnar portion 126. In other words, the columnar portion 126 is also an example of the "receiving portion 128" in this disclosure. Specifically, the receiving portion 128 has the function of guiding the flammable gas that has spread by the conical portion 124 upward along its surface.

[0039] Furthermore, this series of flows is caused by the so-called Coanda effect. That is, the flow rate, velocity, and pressure of the flammable gas, as well as the type of flammable gas, and the material and surface properties of the intake section 128 can be appropriately set to produce the above-described flow.

[0040] Here, as shown in Figure 4, the ignition chamber 130 is connected to the jet 160 through the opening 134. Therefore, as shown in Figure 4, when the flammable gas is ejected upward by the flame holder 122, the flammable gas flows into the ignition chamber 130. When ignition occurs in the ignition chamber 130 by the ignition holder 132, the flame 150 propagates to the outside of the ignition chamber 130, i.e., to the jet 160 of flammable gas.

[0041] As the flame 150 propagates from the ignition chamber 130 through the opening 134 to the jet 160, the flame 150 is created in a stable state above the flame holder 122, as shown in Figure 5. As mentioned above, the flammable gas gathers towards the radial center above the flame holder 122, thus suppressing the radial outward diffusion of the flame 150.

[0042] Therefore, in the heating device 100 having the gas burner head 110 in this embodiment, as shown in Figure 5, a flame 150 is generated that extends in the direction of the flammable gas jet 160. As shown in Figure 5, with the heating device 100 having the gas burner head 110, the flame 150 is a single flame. In other words, as shown in Figure 5, the flame 150 formed by the heating device 100 having the gas burner head 110 is not a combination of multiple flames.

[0043] Figure 6 shows an example of how to use the gas burner head 110 according to this embodiment. Figure 6 shows how deposits 142 containing metal components are attached to the inner wall surface of the kettle 140. Also, as shown in Figure 6, the kettle 140 is placed with its opening facing downwards. Although the deposits 142 are attached to the inner wall surface of the kettle 140, they melt when heated, so they can be removed from the inner wall surface of the kettle 140 by heating the kettle 140. The kettle 140 is an example of the "object to be heated" in this disclosure. The deposits 142 are an example of "debris falling from the object to be heated".

[0044] As shown in Figure 6, we consider heating the kettle 140 using a heating device 100 having a gas burner head 110 in this embodiment. As shown in Figure 6, since the bottom of the kettle 140 is open, when heated by the heating device 100, the molten deposits 142 fall towards the heating device 100.

[0045] In this case, when the deposit 142 is placed above the gas supply port 112 of the gas burner head 110 and the flame 150 is directed upward, the deposit 142 may come into contact with the gas supply port 112. More specifically, like the melting of aluminium dross, the deposit 142 may melt due to the flame 150 and adhere to the gas supply port 112 when it melts and falls off. If the gas supply port 112 is blocked, the flow of flammable gas may become unstable and the flame 150 may be extinguished.

[0046] (Effects and Benefits) However, in the gas burner head 110 according to this embodiment, as shown in Figure 2B, the gas supply port 112 is concealed by the flame holder 122. The flame holder 122 also guides the jet of flammable gas 160 while widening it beyond the gas supply port 112. As a result, in the gas burner head 110 according to this disclosure, even when the flame 150 is directed upward and the deposits 142 are positioned above the gas supply port 112, the gas supply port 112 is less likely to be blocked by the deposits 142. More specifically, even if the deposits 142 fall toward the gas supply port 112 of the gas burner head 110, the deposits 142 will hit the flame holder 122, thus preventing the gas supply port 112 from being blocked. Therefore, with the gas burner head 110 according to this embodiment, even when deposits 142 fall from above, the upward-directed flame 150 can be stabilized.

[0047] Furthermore, the gas burner head 110 has a draw-in section 128 downstream of the jet of flammable gas 160 in the conical section 124, which guides the jet of flammable gas 160 along its surface. Therefore, according to this embodiment of the gas burner head 110, the flammable gas is more likely to flow along the draw-in section 128 in the desired direction after its flow is widened beyond the gas supply port 112 by the conical section 124. In other words, the gas burner head 110 has a columnar section 126 extending in the direction of the gas supply port 112, downstream of the jet of flammable gas 160 in the conical section 124, which extends downstream of the conical section 124. Therefore, according to this embodiment of the gas burner head 110, the flammable gas is more likely to flow along the columnar section 126 in the direction of the jet 160 after its flow is widened beyond the gas supply port 112 by the conical section 124.

[0048] As a result, in the gas burner head 110 according to this embodiment, the flame 150 can be prevented from spreading unintentionally compared to the case where the intake portion 128 is not formed in the flame holder 122. In other words, in the gas burner head 110, the flame 150 can be prevented from spreading unintentionally compared to the case where the column portion 126 is not formed in the flame holder 122. That is, according to the gas burner head 110 according to this embodiment, the excessive spreading of the flame 150 can be prevented. In other words, according to the gas burner head 110 according to this embodiment, the straightness of the flame 150 can be improved.

[0049] Furthermore, the gas burner head 110 has an ignition chamber 130 in which an igniter 132 is positioned inside a flame holder 122. The ignition chamber 130 is connected to the space through which the flammable gas jet 160 flows, with an opening 134 that is hidden when viewed from downstream of the flammable gas jet 160. In other words, according to this embodiment of the gas burner head 110, an ignition chamber 130 is formed in which the igniter 132 is positioned in a location where it will not be hit by the falling deposits 142.

[0050] Therefore, according to this embodiment of the gas burner head 110, it is possible to ignite the flammable gas and form a flame 150. Furthermore, according to this embodiment of the gas burner head 110, compared to the case where the igniter 132 is exposed downstream of the flammable gas jet 160, the possibility of ignition failing due to deposits 142 hitting the igniter 132 can be suppressed.

[0051] (modified version) In the above description, the inlet portion 128, i.e., the columnar portion 126, was integrally formed with respect to the conical portion 124 on the downstream side of the flammable gas jet 160, as shown in Figures 1 to 6. In this embodiment, the inlet portion 128 is not limited to its specific shape as long as it is capable of guiding the flammable gas along its surface. For example, the inlet portion 128 may be divided with a gap in the radial direction (i.e., horizontal direction) or in the direction of the jet 160 (i.e., vertical direction). Alternatively, for example, the inlet portion 128 (i.e., the columnar portion 126) may be configured by being arranged with a gap between it and the conical portion 124 in the direction of the jet 160 (i.e., vertical direction).

[0052] Furthermore, although the ignition chamber 130 was formed inside the columnar section 126 in the above description, the configuration of the gas burner head 110 according to this embodiment is not limited to this. For example, the igniter 132 may be located outside the flame holder 122 as long as it is positioned to ignite the jet 160, or the ignition may be performed by a person using the heating device 100 by providing a flame source from the outside.

[0053] Furthermore, in the above description, the flame holder 122 and the main pipe 114 were assumed to have a circular cross-section. However, the configuration of the gas burner head 110 according to this embodiment is not limited to this. The cross-sections of the flame holder 122 and the main pipe 114 may be elliptical, polygonal, or any other shape, as long as it allows the flammable gas jet 160 to flow along the surface of the flame holder 122.

[0054] Furthermore, in the above description, the flammable gas supplied by the gas supply unit 138 was premixed. The configuration of the gas burner head 110 according to this embodiment is not limited to this. If a stable flame 150 is generated above the flame holder 122, oxygen does not need to be premixed (i.e., a diffuse flame may be generated).

[0055] Furthermore, in the above description, the flame holder 122 was configured to have its vertical position adjustable by the support shaft 120. In this embodiment, the configuration of the gas burner head 110 does not necessarily require that the position of the flame holder 122 be adjustable. That is, the gas burner head 110 does not need to be configured to have its center supported by the support shaft 120, as long as it is capable of ejecting flammable gas. For example, a tripod may be attached to the gas supply port, and the flame holder 122 may be configured to be positioned inside the flow of the jet 160 by the tripod.

[0056] In these modified forms, those that produce the same effects as in this embodiment can also be obtained.

[0057] (supplement) In the above description, an example was given in which a flame 150 is generated above the gas burner head 110 by ejecting flammable gas upwards from the gas burner head 110. However, the method of using the heating device 100 in this embodiment is not limited to this. That is, even if the orientation of the gas burner head 110 (in other words, the orientation of the jet of flammable gas 160) is in a direction other than upwards, it is possible to generate a stable flame 150 as described above.

[0058] Next, a gas burner head 210 according to the second embodiment of this disclosure will be described with reference to Figure 7. In the description of the second embodiment, components similar to those in the first embodiment will be denoted by the same reference numerals as in the first embodiment, and detailed descriptions will be omitted.

[0059] [Second Embodiment] (composition) Figure 7 shows a gas burner head 210 of a heating device 200 according to a second embodiment of the present disclosure. The gas burner head 210 supplies flammable gas toward the flame holder 222 when the flame holder 222 is attached to it.

[0060] Here, as shown in Figure 7, the flame holder 222 has a conical portion 224, but does not have the columnar portion 126 of the first embodiment. In other words, the flame holder 222 of this embodiment does not have the retractable portion 128 of the flame holder 122 of the first embodiment.

[0061] In this embodiment as well, the diameter of the upper end of the conical portion 224 is larger than the diameter of the main pipe 114. That is, in this embodiment as well, the flame holder 222 hides the gas supply port 112 when viewed from above. In this embodiment, it is preferable that the upper end of the conical portion 224 is covered by the upper plate 236.

[0062] In this embodiment, the ignition chamber 230 is formed inside the conical portion 224, and an opening 234 is made on the side of the conical portion 224 (a surface other than the upper plate 236). The operation of the igniter 232 and the ignition chamber 230 is the same as that of the igniter 132 and the ignition chamber 130 in the first embodiment. The other configurations are the same as those of the gas burner head 110 and the heating device 100 in the first embodiment.

[0063] (Mechanism of Action and Effects) In this embodiment of the gas burner head 210, the gas supply port 112 is concealed by the flame holder 222. The flame holder 222 also guides the jet of flammable gas 160 while widening it beyond the gas supply port 112. As a result, in the gas burner head 210 according to this disclosure, even when the flame 150 is directed upward and the deposits 142 are positioned above the gas supply port 112, the gas supply port 112 is less likely to be blocked by the deposits 142. Therefore, with this embodiment of the gas burner head 210, even when debris falls from the deposits 142 from above, the upward-directed flame 150 can be stabilized.

[0064] While embodiments of this disclosure have been described above with reference to the attached drawings, it is clear that any person with ordinary skill in the art to which this disclosure belongs could conceive of various modifications or applications within the scope of the technical idea described in the claims, and these too are naturally understood to fall within the technical scope of this disclosure. [Explanation of symbols]

[0065] 100 Heating device 110 Gas Burner Head 112 Gas supply port 114 Master 116 Branch pipe 118 nuts 120 Support shaft 122 Flame holder 124 Pyramidal region 126 Column body part 128 Service entrance 130 Ignition chamber 132 Igniter 134 Aperture 136 Top plate 138 Gas Supply Department 140. Kettle (an example of an object to be heated) 142. Adhering substances (an example of substances falling from a heated object) 150 Flames 160 jets 200 Heating device 210 Gas Burner Head 222 Flame holder 224 Pyramidal region 230 Ignition chamber 232 Igniter 234 Aperture 236 Top plate

Claims

1. A gas burner head that forms a single flame, A gas supply port is formed at the end of the flow path of the combustible gas, and the combustible gas is ejected as a jet. A flame holder positioned in the jet of combustible gas supplied from the gas supply port, having a conical portion that guides the jet of combustible gas while widening it from the gas supply port, and the flame holder that, when viewed from the downstream side of the jet of combustible gas, conceals the entire gas supply port; Equipped with, The flame holder further comprises a columnar portion formed downstream of the jet of flammable gas from the conical portion and extending in the direction toward the gas supply port. Gas burner head.

2. A gas burner head that forms a single flame, A gas supply port is formed at the end of the flow path of the combustible gas, and the combustible gas is ejected as a jet. A flame holder positioned in the jet of combustible gas supplied from the gas supply port, having a conical portion that guides the jet of combustible gas while widening it from the gas supply port, and the flame holder that, when viewed from the downstream side of the jet of combustible gas, conceals the entire gas supply port; Equipped with, The flame holder has an ignition chamber in which an igniter is placed. The ignition chamber is connected by an opening to the space through which the jet flows, and the opening is concealed when viewed from the downstream side of the jet of combustible gas. Gas burner head.

3. A gas burner head according to claim 1 or claim 2, A gas supply unit that supplies the combustible gas to the aforementioned combustible gas flow path, A heating device equipped with the following features.

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