Combustion device

Abstract

To provide a combustion device capable of improving convenience.SOLUTION: A combustion device 100 which burns a gas fuel supplied from a gas cartridge 901 includes: a body part 1; a first tube body 51 rotatably mounted with respect to the body part 1 side; and a lock mechanism 6 for restricting the rotation of the first tube body 51. In the case where the first tube body 51 is rotated to the passage tube body side first rotation position or the passage tube body side second rotation position and in the case where the lock mechanism 6 is rotated to a restriction member side first rotation position, the lock mechanism 6 restricts the rotation of the first tube body 51, and in the case where the first tube body 51 rotates to the passage tube body side first rotation position or the passage tube body side second rotation position and in the case the lock mechanism 6 rotates to the restriction member side second rotation position, it does not restrict the rotation of the first tube body 51.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a combustion device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, combustion devices that combust gaseous fuel supplied from a fuel supply source have been known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2004-44854 Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, in conventional combustion devices, including the combustion device of Patent Document 1, there has been a demand for technology to improve the convenience.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a combustion device that can improve convenience. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, a combustion device according to claim 1 is a combustion device that burns gaseous fuel supplied from a fuel supply source, comprising: a main body having a burner head provided with a flame hole for ejecting the gaseous fuel; a passage tube that serves as a passage for the gaseous fuel from the fuel supply source side to the burner head side, the passage tube being attached rotatably relative to the main body side with one end side of the passage tube as a reference; and a restricting member for restricting the rotation of the passage tube relative to the main body side, the restricting member being annularly provided on an outer periphery of the passage tube, the restricting member being rotatable between a first restricting member side rotation position and a second restricting member side rotation position with the passage tube as a reference, The passage pipe is rotatable between a passage pipe first rotation position protruding from the main body portion side and a passage pipe second rotation position in which the passage pipe is accommodated on the main body portion side, and the regulating member has a regulating portion, and when the passage pipe is rotated to the passage pipe first rotation position or the passage pipe second rotation position, the regulating portion faces a part of the main body portion side and gets caught thereon to regulate the rotation of the passage pipe relative to the main body portion side when the regulating portion is rotated to the regulating member side first rotation position, and when the passage pipe is rotated to the passage pipe first rotation position or the passage pipe second rotation position, the regulating portion does not face the main body portion side and does not get caught thereon, so does not regulate the rotation of the passage pipe relative to the main body portion side.

[0007] In addition, the combustion device described in claim 2 is the combustion device described in claim 1, wherein the regulating member has an operating portion for operating the rotation of the regulating member, the operating portion protruding from an outer peripheral surface of the regulating member.

[0008] The combustion apparatus according to a third aspect of the present invention is the combustion apparatus according to the first aspect, wherein the restricting member is biased toward the restricting member side first pivot position by a biasing member.

[0009] The combustion device according to claim 4 is the combustion device according to any one of claims 1 to 3, wherein the burner head portion has a first burner head portion and a second burner head portion extending along a first direction and arranged approximately parallel to each other at a predetermined interval in a second direction perpendicular to the first direction, and further comprises an extension tube extending from one end side of the passage tube toward both sides in the second direction intersecting with the passage tube, the extension tube serving as a passage for the gaseous fuel, wherein one end side of the extension tube is provided in a first internal space of the first burner head portion which is connected to the flame hole of the first burner head portion, and the other end side of the extension tube is provided in a second internal space of the second burner head portion which is connected to the flame hole of the second burner head portion.

[0010] Furthermore, the combustion device of claim 5 is the combustion device of claim 1, wherein the burner head portion extends along a first direction and has a first burner head portion and a second burner head portion that are arranged approximately parallel to each other and at a predetermined interval in a second direction perpendicular to the first direction, and further comprises a trivet portion on which an object to be heated by combustion of the gaseous fuel is placed, and the trivet portion has a first trivet portion that is arranged along the first direction and at a position corresponding to the first burner head portion, and a second trivet portion that is arranged along the first direction and at a position corresponding to the second burner head portion.

[0011] The combustion device of claim 6 is the combustion device of claim 5, wherein the first trivet has a first trivet side straight portion that is parallel to the first direction and a first trivet side protruding portion that protrudes toward the second trivet side at a predetermined position where the first trivet side straight portion extends, and the second trivet has a second trivet side straight portion that is parallel to the first direction and a second trivet side protruding portion that protrudes toward the first trivet side at a predetermined position where the second trivet side straight portion extends.

[0012] Furthermore, the combustion device of claim 7 is the combustion device of claim 6, wherein the straight portion on the first trivet side does not face the first burner head portion in the direction of spraying the gaseous fuel, the protruding portion on the first trivet side faces the first burner head portion in the direction of spraying the gaseous fuel, the straight portion on the second trivet side does not face the second burner head portion in the direction of spraying the gaseous fuel, and the protruding portion on the second trivet side faces the second burner head portion in the direction of spraying the gaseous fuel. Effect of the Invention

[0013] According to the combustion device of claim 1, since the passage pipe is rotatable between the first passage pipe side rotation position and the second passage pipe side rotation position, for example, the combustion device can be stored compactly while maintaining the convenience of the combustion device during use, thereby improving convenience. Also, for example, it becomes possible to reliably restrict or release the restriction on the rotation of the passage pipe by a relatively simple action of rotating the restricting member.

[0014] According to the combustion device of claim 2, by having an operating portion protruding from the outer circumferential surface of the restricting member, for example, it is possible to improve the operability of the restricting member.

[0015] According to the combustion device described in claim 3, the regulating member is biased toward the first rotation position on the regulating member side, so that, for example, when no external force is applied from the user's fingers, the regulating member can be rotated to the first rotation position on the regulating member side to regulate the rotation of the passage pipe body, thereby making it possible to prevent rotation of the passage pipe against the user's intention.

[0016] According to the combustion device described in claim 4, one end side of the extended tube is provided within the first internal space of the first burner head portion, and the other end side of the extended tube is provided within the second internal space of the second burner head portion, thereby making it possible, for example, to reliably eject gaseous fuel through each burner head portion.

[0017] According to the combustion device of claim 5, by having a first trivet provided at a position corresponding to the first burner head portion and a second trivet provided at a position corresponding to the second burner head portion, for example, the object can be reliably supported at an appropriate position, so that the object can be heated efficiently and the convenience of the combustion device can be improved.

[0018] According to the combustion device of claim 6, the first trivet has a straight portion on the first trivet side and a protruding portion on the first trivet side that protrudes toward the second trivet side, and the second trivet has a straight portion on the second trivet side and a protruding portion on the second trivet side that protrudes toward the first trivet side, making it possible, for example, to stably support an object.

[0019] According to the combustion device described in claim 7, the straight portion on the first trivet side and the straight portion on the second trivet side do not face the first burner head portion and the second burner head portion, and the protruding portion on the first trivet side and the protruding portion on the second trivet side face the first burner head portion and the second burner head portion. As a result, for example, it is possible to make it difficult for a flame generated by combustion to hit the straight portion on the first trivet side and the straight portion on the second trivet side, and therefore it is possible to reduce the amount of temperature rise of the entire trivet while stably supporting an object. [Brief description of the drawings]

[0020] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8]FIG. 2 is an exploded perspective view of some components of the combustion device. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. [Figure 16] FIG. 4 is a perspective view of a connecting member and a locking mechanism. [Figure 17] FIG. 2 is a perspective view of a main body and a connecting member. [Figure 18] FIG. 2 is a perspective view of a main body and a connecting member. [Figure 19] FIG. 2 is a perspective view of the combustion device as viewed from below. [Figure 20] FIG. 2 is a perspective view of the combustion device as viewed from below. [Figure 21] FIG. 2 is a perspective view of the combustion device as viewed from below. [Figure 22] FIG. 2 is a perspective view of the combustion device in a stored state. [Figure 23] 1 is a diagram showing another combustion device. [Figure 24] 1 is a diagram showing another combustion device. [Diagram 25] 1 is a diagram showing another combustion device. [Figure 26] 1 is a diagram showing another combustion device. [Figure 27] 1 is a diagram showing another combustion device. [Figure 28] 1 is a diagram showing another combustion device. [Figure 29] 1 is a diagram showing another combustion device. [Diagram 30] 1 is a diagram showing another combustion device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a combustion device according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiment.

[0022] [Basic Concept of the Embodiment] First, a basic concept of the embodiment will be described. The embodiment generally relates to a combustion device.

[0023] The term "combustion device" refers to a device that burns gaseous fuel supplied from a fuel supply source, and is a concept that includes, for example, a portable device or, as a variation, a stationary device.

[0024] The combustion device can be used for any purpose, including cooking and boiling water while camping, mountain climbing, or fieldwork, or for other purposes (such as heating or watching flames).

[0025] In the following embodiments, the "combustion device" is a portable device, and the combustion device is used for cooking, boiling water, or the like.

[0026] [Specific details of the embodiment]

[0027] (composition) First, the configuration of the combustion device of this embodiment will be described. Figures 1 to 3 are perspective views of the combustion device, Figure 4 is a side view of the combustion device, Figure 5 is a plan view of the combustion device, Figure 6 is a front view of the combustion device, and Figure 7 is a cross-sectional view of the combustion device.

[0028] 1 and 2 show a state where the connecting member 5 is installed on an installation surface 900 (for example, a horizontal ground surface or a table top). In addition, in Fig. 3 and Fig. 4, the spring member 7 is not actually visible, but is shown by a dashed line. In Fig. 5, the second tube 52 of the connecting member 5 is not actually visible, but is shown by a dashed line.

[0029] The XYZ axes shown in each figure are axes for convenience of explanation based on the state in which the combustion device 100 is installed on the installation surface 900. The XYZ axes are mutually orthogonal, and the Z axis indicates the vertical direction, which corresponds to, for example, the direction in which the first tube 51 (FIG. 4) of the connection member 5 extends. The X axis indicates the horizontal direction, which corresponds to, for example, the direction in which the burner head 12 (FIG. 5) extends. The Y axis indicates the horizontal direction, which corresponds to, for example, the direction in which the second tube 52 (FIG. 5) of the connection member 5 extends.

[0030] The combustion device 100 in Figures 1 and 2 is a device that burns gaseous fuel supplied from a gas cartridge 901, and includes, for example, a main body portion 1, an ignition portion 2, a windshield portion 3, a trivet portion 4, a connecting member 5, a locking mechanism 6 (Figure 3), and a spring member 7 (Figure 3).

[0031] The gas cartridge 901 is a fuel supply source that functions as a supply source of gaseous fuel, and is, for example, a cylinder in which at least a part of the fuel is stored in a liquid state. For example, a known component can be applied to this gas cartridge 901.

[0032] "Gaseous fuel" is a concept indicating fuel in a gaseous state, and for example, so-called petroleum gas (gas whose main components are propane or butane, etc.) can be used, or other known gaseous fuels can also be used.

[0033] (Configuration - Main body) FIG. 8 is an exploded perspective view of some of the components of the combustion device, FIGS. 9 and 10 are perspective views of the base, and FIGS. 11 and 12 are perspective views of the burner head.

[0034] The components of the combustion device 100 are attached to each other as appropriate, and any attachment method (screw fastening, engagement, crimping, welding, etc., or other known methods) can be used, so detailed explanations other than those of the characteristic parts will be omitted.

[0035] The main body 1 in FIG. 1 is the main body of the combustion device 100, and as shown in FIG. 8, includes, for example, a base 11, a burner head 12, a recess side folded piece 13 (FIG. 10), a heat shield 14, an ignition plug 15 (FIG. 7), and an ignition plate 16 (FIG. 7).

[0036] (Configuration - Main body - Base) 3 and 8 to 10 is a component to which various components of the combustion device 100 are attached, and has, for example, a generally rectangular shape as a whole and is made of metal as shown in Fig. 9 and 10. The base 11 in Fig. 9 and 10 includes, for example, a recess 111 and an opening 112.

[0037] 9 and 10 is a space in which the connection member 5 (FIG. 3) is housed, and is, for example, a portion recessed from the lower side (-Z direction in FIG. 1) of the base 11 toward the upper side (+Z direction in FIG. 1). As shown in FIG. 10, for example, this recess 111 is formed by cutting out a portion of the base 11 from one side (-X direction in FIG. 3) toward the other side (+X direction in FIG. 3) and covering the cutout portion with the heat shield 14 from above.

[0038] 9 and 10 is a portion through which the connecting member 5 (FIG. 4) is inserted, and is, for example, a portion penetrating between the upper and lower sides of the base 11. As shown in FIG. 10, this opening 112 is formed, for example, by providing a notch that is further notched from one side to the other side inside the aforementioned notch (the notch that forms the recess 111).

[0039] (Configuration - Main body - Burner head) 5, 8, and 11 to 12 is a component that ejects a mixed gas to the outside, and is, for example, attached and fixed to a base 11. The burner head 12 includes, for example, a first burner head 121 and a second burner head 122 as shown in FIG.

[0040] The term "mixed gas" is a concept that indicates a gas in which the above-mentioned gaseous fuel and air are mixed together, that is, a concept that includes the gaseous fuel.

[0041] (Configuration: Main body, burner head, first burner head and second burner head) The first burner head portion 121 and the second burner head portion 122 are components extending along the longitudinal direction (X-axis direction in Figure 5) (first direction) of the base 11 and arranged approximately parallel to each other at a predetermined distance in the short direction (Y-axis direction in Figure 5) (second direction) of the base 11.

[0042] (Configuration: Main body, burner head, first burner head) The first burner head part 121 in Fig. 5 has a hollow structure so that one internal space (first internal space) is formed along the direction in which the first burner head part 121 extends (the X-axis direction in Fig. 5). The first burner head part 121 has, for example, a large number of burner holes 120 (Figs. 5 and 11).

[0043] The burner holes 120 of the first burner head part 121 are, for example, openings for ejecting the mixed gas from the internal space of the first burner head part 121 to the outside, and are also connected to the internal space. Although only some of the burner holes 120 are marked with reference numerals in Fig. 5 and Fig. 11, for example, as shown in the drawings, a large number of burner holes 120 are provided in the direction in which the first burner head part 121 extends, arranged in two rows.

[0044] This first burner head part 121 is provided with, for example, a head-side first connecting pipe 121A in Fig. 11. The head-side first connecting pipe 121A is provided, for example, in the center in the longitudinal direction of the first burner head part 121, and is a metallic component protruding from the first burner head part 121 along a direction (Y-axis direction in Fig. 5) perpendicular to the direction in which the first burner head part 121 extends. The hollow part of the head-side first connecting pipe 121A communicates with the internal space of the first burner head part 121 and is circular in cross section.

[0045] (Configuration: Main body, burner head, second burner head) The second burner head part 122 in Fig. 5 has, for example, the same configuration as the first burner head part 121. The second burner head part 122 has, for example, a hollow structure so that one internal space (second internal space) is formed along the direction in which the second burner head part 122 extends (the X-axis direction in Fig. 5). The second burner head part 122 has, for example, a large number of flame holes 120 (Figs. 5 and 11).

[0046] The burner holes 120 of the second burner head part 122 are, for example, openings for ejecting the mixed gas from the internal space of the second burner head part 122 to the outside, and are also connected to the internal space. Although only some of the burner holes 120 are marked with reference numerals in Figures 5 and 11, a large number of burner holes 120 are provided in the direction in which the second burner head part 122 extends, for example, arranged in two rows.

[0047] This second burner head part 122 is provided with, for example, a head-side second connecting pipe 122A in Fig. 11. The head-side second connecting pipe 122A is provided, for example, in the center in the longitudinal direction of the second burner head part 122, and is a metallic component protruding from the second burner head part 122 along a direction (Y-axis direction in Fig. 5) perpendicular to the direction in which the second burner head part 122 extends. The hollow part of the head-side second connecting pipe 122A communicates with the internal space of the second burner head part 122 and is circular in cross section.

[0048] This head side second connecting pipe 122A and the above-mentioned head side first connecting pipe 121A are provided by inserting the second pipe body 52 (described later) of the connection member 5, and are provided, for example, at a predetermined interval on the same straight line in the Y-axis direction in Fig. 5. Also, the head side second connecting pipe 122A and the head side first connecting pipe 121A may be formed integrally with the first burner head part 121 and the second burner head part 122, respectively, or may be formed as separate bodies and then fixed using a joining method such as welding.

[0049] (Configuration - Main body - Concave side folded piece) 3 and 9-10 is a component provided in the recess 111, and is a component that is bent from the base 11 (i.e., along the Z-axis in FIG. 3). This recess-side bent piece 13 may be formed, for example, by bending a part of a flat member that forms the base 11, or may be formed as a separate piece and then fixed using a joining method such as welding.

[0050] (Configuration - Main body - Heat shielding part) The heat shield 14 in Figures 1 and 9 to 10 is a component for blocking (blocking) at least a portion of the heat (heat transmitted directly from the flame generated by the combustion of the gaseous fuel, or heat transmitted indirectly via a cooking utensil (object) placed on the trivet 4 (Figure 1)) generated when the mixed gas (more specifically, gaseous fuel, the same applies below) sprayed from the burner head 12 is burned.

[0051] The heat shield 14 is, for example, a folded flat plate member made of metal, and includes a first portion 141, two second portions 142, and a third portion 143 as shown in Figs.

[0052] The first portion 141 is, for example, a member having a part that forms the bottom of the recess 111 and another part that extends and protrudes in the longitudinal direction of the base 11 (the X-axis direction in FIG. 5).

[0053] The two second portions 142 are, for example, components that form the sides of the recess 111, and are inclined so that the distance between them in the short direction of the base 11 (the Y-axis direction in Figure 5) increases as they move from the first portion 141 side toward the base 11 side.

[0054] Third portion 143 is, for example, a member for restricting attachment of gas cartridge 901 to connecting member 5 when connecting member 5 is housed in recess 111, and is a member bent from an end portion of first portion 141. Third portion 143 is provided, for example, on the outer side (−X direction in FIG. 5) of the end portion of base 11 in the longitudinal direction of base 11 (X-axis direction in FIG. 5).

[0055] In addition, since the aforementioned base 11 (FIG. 9) is also made of metal, it has a heat shielding (heat blocking) function similar to that of the heat shield 14. Meanwhile, as described above, the base 11 has a portion corresponding to the recess 111 cut out, but the heat shield 14 is provided in a portion corresponding to the cut-out portion, which is the cut-out portion, and therefore it is possible to provide heat shielding for the portion corresponding to the cut-out portion. Since the heat shield 14 includes the first portion 141, two second portions 142, and the third portion 143, for example, the total volume of the heat shield 14 can be made relatively large, and therefore it is possible to improve the heat shielding property.

[0056] (Configuration - Main body - Spark plug) The ignition plug 15 in FIG. 7 is a component that generates a spark to ignite the mixed gas ejected from the burner head portion 12, and is configured to generate a spark to ignite the gas, for example, by pressing the switch portion 21 in the ignition portion 2 in FIG. 1.

[0057] (Configuration - Main body - Ignition plate) The ignition plate 16 in Figures 1 and 7 is a metal plate for guiding the mixed gas from the burner head portion 12 side to the ignition plug 15 side, or for guiding the sparks generated by the ignition plug 15 to the burner head portion 12 side.

[0058] (Configuration - Ignition section) 1 and 2 is a component for ignition, and is, for example, a component corresponding to an igniter case. This ignition unit 2 is attached to the main body unit 1 (more specifically, to the base unit 11 in FIG. 9) via an ignition unit side attachment unit 200, for example, as shown in FIG. 4. In detail, for example, the ignition unit 2 is attached so as to be rotatable with respect to the main body unit 1, based on a rotation axis that passes through the position of the ignition unit side attachment unit 200 and is aligned along the short side direction of the base unit 11 (the Y-axis direction in FIG. 5).

[0059] The ignition unit 2 includes, for example, a switch unit 21 shown in Fig. 1. The switch unit 21 is a push button switch that is operated to cause the ignition plug 15 to generate a spark.

[0060] (Configuration - Windshield section) 1 and 6 is a metallic component for protecting the burner head 12 side from wind and the like, and is also a component for supporting the trivet 4. The windshield 3 is attached to the main body 1 (more specifically, to the base 11 in FIG. 9) via a windshield-side attachment part 300 as shown in FIG. 6, for example. In detail, the windshield 3 is attached so as to be rotatable with respect to the main body 1, for example, around a rotation axis that passes through the position of the windshield-side attachment part 300 and is aligned along the longitudinal direction of the base 11 (the X-axis direction in FIG. 5).

[0061] In particular, the windshield unit 3 is configured so that the position of the supported trivet unit 4 is fixed at the position shown in FIG. 6 by a stopper or the like so that the trivet unit 4 is positioned at a predetermined position.

[0062] (Composition: Trivet section) Fig. 13 is an explanatory diagram of the trivet section. Note that in Fig. 13, some of the components in Fig. 5 are omitted.

[0063] 1 and 4 to 7 is a component on which cooking utensils or the like are placed as objects to be heated by the combustion of a gas mixture. The trivet 4 is, for example, a metal linear body, and includes a first trivet 41 and a second trivet 42 as shown in FIG.

[0064] (Composition - Five virtues section - First five virtue section) 5 is aligned along the direction (X-axis direction) along which the first burner head part 121 is aligned, and is provided at a position corresponding to the first burner head part 121. Note that "provided at a position corresponding to the first burner head part 121" may be interpreted as a concept indicating that the positioning is based on a predetermined rule with the first burner head part 121 as a reference, for example.

[0065] The first trivet unit 41 in FIG. 5 includes, for example, a straight portion 411 and a protruding portion 412 as shown in FIG.

[0066] (Composition - Trivet part - 1st trivet part - Straight line part) The straight line portion 411 in Fig. 13 is a portion that is parallel to the X-axis direction. The straight line portion 411 does not face the first burner head part 121 in the direction in which the burner head part 12 ejects the mixed gas (the Z-axis direction in Fig. 1), that is, it is provided at a position where it is not directly hit by the flame or where it is difficult for the flame to hit it.

[0067] It should be noted that this straight portion 411 may be interpreted as corresponding to the "first trivet side straight portion."

[0068] (Composition - Trivet part - 1st trivet part - Protruding part) The protruding portion 412 in FIG. 13 is a portion that protrudes toward the second trivet portion 42 side (in the -Y direction) at a predetermined position where the straight portion 411 extends.

[0069] The two protruding portions 412A sandwiched between the straight portions 411 of the four protruding portions 412 face the first burner head portion 121 in the direction in which the burner head portion 12 ejects the mixed gas (the Z-axis direction in Figure 1), that is, are provided in positions where they are directly hit or easily hit by the flame.

[0070] The two protruding portions 412B provided on the end sides of the four protruding portions 412 do not face the first burner head portion 121 in the direction in which the burner head portion 12 ejects the mixed gas (the Z-axis direction in Figure 1), that is, they are provided in positions where they are not directly hit or are unlikely to be hit by the flame.

[0071] It should be noted that both protruding portions 412A and 412B may be interpreted as corresponding to the "protruding portion on the first trivet side," or alternatively, only protruding portion 412A may be interpreted as corresponding to the "protruding portion on the first trivet side."

[0072] (Composition - Five virtues section - Second five virtues section) 5 has, for example, a similar configuration to the first trivet 41. The second trivet 42 is aligned along the direction in which the second burner head 122 is aligned (X-axis direction), and is provided at a position corresponding to the second burner head 122. Note that "provided at a position corresponding to the second burner head 122" may be interpreted as a concept indicating that the positioning is performed based on a predetermined rule with the second burner head 122 as a reference, for example.

[0073] The second trivet 42 in FIG. 5 includes, for example, a straight portion 421 and a protruding portion 422 as shown in FIG.

[0074] (Composition - Trivet part - 2nd trivet part - Straight line part) The straight line portion 421 in Fig. 13 is a portion parallel to the X-axis direction. The straight line portion 421 does not face the second burner head portion 122 in the direction in which the burner head portion 12 ejects the mixed gas (the Z-axis direction in Fig. 1), that is, it is provided at a position where it is not directly hit by the flame or where it is difficult for the flame to hit it.

[0075] It should be noted that this straight portion 421 may be interpreted as corresponding to the "straight portion on the second trivet side."

[0076] (Composition - Trivet part - Second trivet part - Protruding part) The protruding portion 422 in FIG. 13 is a portion that protrudes toward the first trivet portion 41 side (in the +Y direction) at a predetermined position where the straight portion 421 extends.

[0077] The two protruding portions 422A sandwiched between the straight portions 421 of the four protruding portions 422 face the second burner head portion 122 in the direction in which the burner head portion 12 ejects the mixed gas (the Z-axis direction in Figure 1), that is, are provided in positions where they are directly hit or easily hit by the flame.

[0078] The two protruding portions 422B provided on the end sides of the four protruding portions 422 do not face the second burner head portion 122 in the direction in which the burner head portion 12 ejects the mixed gas (the Z-axis direction in Figure 1), that is, they are provided in positions where they are not directly hit or are unlikely to be hit by the flame.

[0079] In addition, both protruding portions 422A and 422B may be interpreted as corresponding to the "protruding portion on the second trivet side," or only protruding portion 422A may be interpreted as corresponding to the "protruding portion on the second trivet side."

[0080] (Configuration - Connection parts) Fig. 14 is a perspective view of the connection member. The connection member 5 in Fig. 3, Fig. 8, and Fig. 14 is a metal member for connecting the gas cartridge 901 to the combustion device 100. As shown in Fig. 14, the connection member 5 includes, for example, a first tubular body 51, a second tubular body 52, an appliance plug 53, a knob 54 (Fig. 1), and an anti-misuse pin 55.

[0081] (Configuration-Connection member-First tube body) The first tube 51 in Figure 14 is a passage tube that serves as a passage for the mixed gas from the gas cartridge 901 (Figure 1) side to the burner head portion 12 side, and is a component that is rotatably attached to the main body portion 1 side with one end side of the first tube 51 as a reference.

[0082] The first pipe 51 is, for example, a mixing pipe that mixes gaseous fuel and external air in a hollow portion. The first pipe 51 is, for example, a component that basically extends in a straight line as shown in FIG. 14. The hollow portion of the first pipe 51 communicates with the hollow portion of the second pipe 52 at one end (upper side of FIG. 14), and communicates with the outside of the connection member 5 through a hollow portion inside the appliance plug 53 (details not shown in each drawing) at the other end (lower side of FIG. 14). An air hole is provided at a predetermined position of the first pipe 51 to take in external air into the hollow portion.

[0083] The first tubular body 51 has a protrusion 511 as shown in Fig. 14(b). The protrusion 511 is a component for restricting the rotation range of the locking mechanism 6 (Fig. 8) attached to the first tubular body 51, and is, for example, a portion protruding from the outer circumferential surface of the first tubular body 51.

[0084] The first pipe 51 may be configured to be formed by joining parts which are separable in the vertical direction of the drawing of FIG. 14 together, or may be configured to be formed integrally.

[0085] (Configuration-Connection member-Second tube body) The second tube 52 in Figure 14 is an extension tube that extends from one end side of the first tube 51 toward both sides (+Y direction and -Y direction) in a direction intersecting with the first tube 51 (the Y-axis direction in Figure 5), and is a component that serves as a passage for the mixed gas.

[0086] The second pipe 52 is, for example, a branch pipe branching off from the first pipe 51. As shown in FIG. 14, for example, two second pipes 52 are provided at one end side of the first pipe 51 so as to be perpendicular to the first pipe 51. The two second pipes 52 are provided, for example, on the same straight line. Each of the hollow portions of the two second pipes 52 communicates with the hollow portion of the first pipe 51 on one side (the side connected to the first pipe 51) and communicates with the outside of the connection member 5 on the other side (the side farther from the first pipe 51).

[0087] The two second pipes 52 have, for example, a circular outer shape in cross section. The outer diameters of the two second pipes 52 are, for example, slightly smaller than the inner diameters of the hollow portions of the head side first connecting pipe 121A and the head side second connecting pipe 122A in Figs. 11 and 12.

[0088] The two second pipe bodies 52 are provided, for example, as shown in FIG. 5, in a state where they are inserted into the head side first connecting pipe 121A and the head side second connecting pipe 122A.

[0089] 5, the second tube 52 inserted into the head side first connecting pipe 121A is inserted into the head side first connecting pipe 121A, and the tip side of the second tube 52 (one end side of the extended tube) is provided in the internal space of the first burner head part 121. Also, for example, as shown in FIG. 5, the second tube 52 inserted into the head side second connecting pipe 122A is inserted into the head side second connecting pipe 122A, and the tip side of the second tube 52 (the other end side of the extended tube) is provided in the internal space of the second burner head part 122.

[0090] In this case, the two second tube bodies 52 are rotatably inserted into the head side first connecting tube 121A and the head side second connecting tube 122A, so that the connecting member 5 (i.e., the first tube body 51) is attached to the main body 1 so as to be rotatable about a rotation axis that passes through the second tube bodies 52 and runs along the Y-axis direction.

[0091] (Configuration-Connection parts-Appliance plug and knob) The valve 53 in FIG. 14 is a component connected to the gas cartridge 901, and is configured so that the supply of gas fuel from the gas cartridge 901 can be adjusted by operating (e.g., rotating) the knob 54 in FIG. 1.

[0092] (Configuration - Connection parts - Misuse prevention pin) The misuse prevention pin 55 in FIG. 14 is a protrusion intended to prevent an item of a size that would not straddle the two trivets 4 in FIG. 2 (for example, a relatively small coffee cup) from being placed directly on the burner head 12, contrary to the design intent of the combustion device 100.

[0093] (Configuration - Locking mechanism) Fig. 15 is a perspective view of the locking mechanism, Fig. 16 is a perspective view of the connecting member and the locking mechanism, and Figs. 17 and 18 are perspective views of the main body and the connecting member. Figs. 16 to 18 show the state in which the components are attached to each other.

[0094] The locking mechanism 6 in Figures 3 and 15 to 17 is a regulating member for regulating the rotation of the first tubular body 51 relative to the main body 1 side, and is an annular regulating member provided on the outer periphery of the first tubular body 51, and is rotatable between a first rotation position on the regulating member side and a second rotation position on the regulating member side with the first tubular body 51 as a reference.

[0095] The locking mechanism in FIG. 15 is, for example, a metal component, and includes an annular portion 61, a first protruding portion 62, a second protruding portion 63 (FIG. 15(a)), and an elongated hole 64 (FIG. 15(b)).

[0096] (Configuration - Locking mechanism - Ring section) 15 is a portion provided around the first tubular body 51 of the connection member 5. The diameter of the hollow portion of the annular portion 61 is slightly larger than the outer diameter of the first tubular body 51 near a predetermined position (the vicinity of the position where the protruding portion 511 in FIG. 14(b) is provided).

[0097] (Configuration-Lock Mechanism-First Protrusion) 15 is a restricting portion that hooks onto the main body 1 and restricts the rotation of the first pipe 51 depending on the rotation position of the locking mechanism 6. The first protrusions 62 are, for example, two portions protruding from the annular portion 61. The two first protrusions 62 are provided, for example, at positions facing each other with respect to a position corresponding to the hollow portion of the annular portion 61 as a reference.

[0098] (Configuration-Lock mechanism-Second protrusion) 15(a) is an operating portion for operating the rotation of the lock mechanism 6. The second protruding portion 63 is, for example, a portion protruding from the outer circumferential surface of the annular portion 61.

[0099] (Configuration - Locking mechanism - Slot) The long hole 64 in FIG. 15(b) is a component for regulating the rotation range of the locking mechanism 6 (FIG. 16(b)) when attached to the first tubular body 51, and is provided, for example, along the circumferential direction of the annular portion 61, and has the protrusion 511 of the first tubular body 51 provided therein.

[0100] (Configuration - Spring parts) 3, 4, and 14(a) is a biasing member for biasing the locking mechanism 6 in the circumferential direction in a state where it is attached to the connecting member 5. The spring member 7 can be configured using, for example, a torsion coil spring.

[0101] 16(a), one end 7A of the spring member 7 is provided at a predetermined position on the first tubular body 51 so as to apply an external force in the direction of arrow A1 to the locking mechanism 6 attached to the first tubular body 51. The other end (not shown) of the spring member 7 is fixed to the first tubular body 51.

[0102] Then, the lock mechanism 6 rotates toward one side in the circumferential direction due to the external force (biasing force) applied by the spring member .

[0103] (Rotation of the first tube) Next, the rotation of the first pipe 51 of the connecting member 5 in the combustion device 100 configured as described above will be described. Figures 19 to 21 are perspective views of the combustion device as viewed from below. Note that Figures 19 to 21 show a state in which the components of the combustion device 100 in Figure 1 are folded and stored. Note that Figure 21(b) is an enlarged view of a portion of Figure 21(a).

[0104] As described above, the first pipe 51 is attached to the main body 1 so as to be rotatable about a rotation axis that passes through the second pipe 52 in FIG. 5 and is aligned along the Y-axis direction.

[0105] When the combustion device 100 is used, the first pipe 51 is rotated to a position (hereinafter also referred to as the "protruding position") where it protrudes downward (in the -Z direction) at a right angle to the main body 1 as shown in Fig. 4. When the combustion device 100 is stored without being used, the first pipe 51 is rotated to a position (hereinafter also referred to as the "storage position") where it is accommodated in the recess 111 (Fig. 20(a)) of the main body 1 and retreats to the main body 1 side as shown in Fig. 21.

[0106] Here, for example, the first tubular body 51 of the combustion device 100, which is rotatable between a "projected position" and a "stored position", is described as being rotated to each position.

[0107] It should be noted that the "protruding position" may be interpreted as corresponding to the "first pivot position on the passage pipe side" and the "storage position" may be interpreted as corresponding to the "second pivot position on the passage pipe side".

[0108] ===Locked in protruding position=== First, as shown in FIG. 19(a), when the first tubular body 51 is rotated to the “protruding position”, the spring force of the spring member 7 causes the locking mechanism 6 to rotate with respect to the first tubular body 51, and the first protruding portion 62 of the locking mechanism 6 is positioned opposite a part of the base 11 (the peripheral portion of the opening 112 in FIG. 10) (first rotation position on the regulating member side).

[0109] In this case, the first protrusion 62 of the locking mechanism 6 is hooked and fixed to a part of the base 11, so that the first pipe 51 cannot be rotated. In other words, the first pipe 51 is fixed and locked in the "protruding position."

[0110] ===Unlocking in protruding position=== Next, as shown in FIG. 19(b), when the first tube 51 is rotated to the "protruding position," if an external force in the opposite direction to the biasing force of the spring member 7 (for example, an external force applied from the user's finger through the second protrusion 63 in FIG. 15, which is greater than the biasing force) is applied to the locking mechanism 6, the locking mechanism 6 rotates based on the first tube 51, and the first protrusion 62 of the locking mechanism 6 is disposed in a position not facing the base 11 (second rotation position on the regulating member side).

[0111] In this case, the first protrusion 62 of the locking mechanism 6 is not caught on a part of the base 11, and the first pipe 51 is thus in a rotatable state. In other words, the first pipe 51 is in an unlocked state.

[0112] ===Rotating to stowed position=== Next, as shown in Figures 20(a) and (b), when an external force (e.g., an external force applied from the fingers of the user's hand) is applied to the first tube 51 to rotate the first tube 51 to the "storage position", the first tube 51 is accommodated in the recess 111 of Figure 20(a) and set to the "storage position".

[0113] ===Locked in stowed position=== Next, as shown in FIG. 20(b), when the first tubular body 51 is rotated to the “storage position” and no external force is applied to the locking mechanism 6, the spring force of the spring member 7 causes the locking mechanism 6 to rotate around the first tubular body 51 as a reference, and the first protrusion 62 of the locking mechanism 6 is positioned opposite the recess side bent piece 13 (first rotation position on the regulating member side) as shown in FIG. 21(b).

[0114] In this case, the first protrusion 62 of the locking mechanism 6 is hooked and fixed to the recess side bent pieces 13, making it impossible to rotate the first pipe 51. In this state, both of the two first protrusions 62 of the locking mechanism 6 are hooked and fixed to both of the two recess side bent pieces 13. The first pipe 51 is then fixed and locked in the "storage position".

[0115] In this case, a third portion 143 of the heat shield 14 is provided near the end of the connecting member 5, and the third portion 142 functions as a lid portion, making it impossible to connect the gas cartridge 901 to the connecting member 5.

[0116] ===Unlocking in stowed position=== Next, as shown in FIG. 20(b), when the first tube 51 is rotated to the “storage position”, if an external force in the opposite direction to the biasing force of the spring member 7 (for example, an external force applied from the finger of the user through the second protrusion 63, which is greater than the biasing force) is applied to the locking mechanism 6, the locking mechanism 6 rotates based on the first tube 51, and the first protrusion 62 of the locking mechanism 6 is disposed in a position not facing the recess side bent piece 13 (the second rotation position on the regulating member side).

[0117] In this case, the first protrusion 62 of the locking mechanism 6 is not caught by the recess-side bent piece 13, and the first tubular body 51 is thus allowed to rotate. In other words, the first tubular body 51 is in an unlocked state.

[0118] ===Rotation to protruding position=== Next, as shown in Figures 20(a) and 19(b), when an external force (e.g., an external force applied from the fingers of the user's hand) is applied to the first tube body 51 to rotate the first tube body 51 to the "protruding position", the first tube body 51 is set to the "protruding position".

[0119] ===Locked in protruding position=== Next, as shown in FIG. 19(b), when the first tubular body 51 is rotated to the "protruding position," if no external force is applied to the locking mechanism 6, the locking mechanism 6 rotates around the first tubular body 51 due to the biasing force of the spring member 7, as described above, and is positioned such that the first protruding portion 62 of the locking mechanism 6 faces a part of the base 11 (first rotation position on the regulating member side), as shown in FIG. 19(a).

[0120] In this case, the first protrusion 62 of the locking mechanism 6 is hooked and fixed to the base 11, so that the first pipe 51 cannot be rotated. The first pipe 51 is hooked and fixed to the bent piece 13, so that the first pipe 51 cannot be rotated. In this state, both of the two first protrusions 62 of the locking mechanism 6 are hooked and fixed to the base 11. The first pipe 51 is then fixed and locked in the "protruding position". This concludes the explanation of the rotation of the first pipe 51.

[0121] (Storage of combustion equipment) Next, a description will be given of storage of the combustion device 100 configured as described above. Figure 22 is a perspective view of the combustion device in the stored state.

[0122] When storing the combustion device 100 in the use state shown in FIG. 1 etc., first, remove the gas cartridge 901. Next, fold the knob 54. Next, rotate the ignition part 2 to store it in the main body part 1 side, and rotate the windshield part 3 to close it. Next, as explained in "(Rotation of the first tube body)", rotate the first tube body 51 to the "storage position". In this way, the combustion device 100 is folded and stored as shown in FIG. 22.

[0123] (Development of Combustion Devices) Next, the deployment of the combustion device 100 configured as described above will be described. When deploying the combustion device 100 in the stored state shown in Fig. 22, the steps of "(storing the combustion device)" described above are carried out in reverse, so that the combustion device 100 is deployed to the ready-to-use state as shown in Fig. 1 etc.

[0124] (ignition) Next, ignition in the combustion device 100 in use will be described. First, gaseous fuel is supplied from the gas cartridge 901 to the hollow part of the first tubular body 51 via the appliance plug 53 (FIG. 14). In this case, in the hollow part of the first tubular body 51, the gaseous fuel is mixed with air from the outside. Then, a mixed gas containing this gaseous fuel and air is supplied to the internal space of the first burner head part 121 and the internal space of the second burner head part 122 via the hollow part of the first tubular body 51 and the hollow part of the second tubular body 52 (FIG. 5), and then ejected from the multiple burner holes 120 toward the upper side (the +Z direction in FIG. 1).

[0125] After that, when the user presses the switch 21 of the ignition unit 2, a spark is generated at the spark plug 15 (FIG. 7), which ignites the ejected gas mixture, causing the gaseous fuel in the gas mixture to burn and generate flames and heat. When an object is placed on the trivet 41, the object is heated.

[0126] (Effects of the embodiment) As described above, according to this embodiment, since the first pipe 51 is rotatable between the first rotation position on the passage pipe side and the second rotation position on the passage pipe side, for example, the combustion device 100 can be stored compactly while maintaining the convenience of the combustion device 100 during use, thereby improving convenience. In addition, for example, by a relatively simple operation of rotating the lock mechanism 6, it is possible to reliably restrict or release the restriction on the rotation of the first pipe 51.

[0127] Furthermore, by providing the second protruding portion 63 protruding from the outer circumferential surface of the locking mechanism 6, for example, it is possible to improve the operability of the locking mechanism 6.

[0128] Furthermore, since the locking mechanism 6 is biased toward the first rotation position on the regulating member side, for example, when no external force is applied from the user's fingers, etc., the locking mechanism 6 can be rotated to the first rotation position on the regulating member side to regulate the rotation of the first tube body 51, thereby making it possible to prevent rotation of the first tube body 51 against the user's intention.

[0129] Furthermore, since an end side of one second tube body 52 is provided within the internal space of the first burner head portion 121 and an end side of another second tube body 52 is provided within the internal space of the second burner head portion 122, it is possible, for example, to reliably eject gaseous fuel through each burner head portion 12.

[0130] Furthermore, by having the first trivet portion 41 provided at a position corresponding to the first burner head portion 121, and the second trivet portion 42 provided at a position corresponding to the second burner head portion 122, for example, the object can be reliably supported at an appropriate position, so that the object can be heated efficiently, thereby improving the convenience of the combustion device 100.

[0131] In addition, the first trivet section 41 has a straight portion 411 and a protruding portion 412 protruding toward the second trivet section 42, and the second trivet section 42 has a straight portion 421 and a protruding portion 422 protruding toward the first trivet section 41, making it possible, for example, to stably support an object.

[0132] In addition, since the straight portions 411 and 421 do not face the first burner head portion 121 and the second burner head portion 122, and the protruding portions 412A and 422A face the first burner head portion 121 and the second burner head portion 122, for example, it is possible to make it difficult for the flame generated by combustion to hit the straight portions 411 and 421, and therefore it is possible to reduce the amount of temperature rise of the entire trivet portion 4 while stably supporting the object.

[0133] [Modifications to the embodiment] Although the embodiment of the present invention has been described above, the specific configuration and means of the present invention can be modified and improved as desired within the scope of the technical ideas of each invention described in the claims. Such modifications will be described below.

[0134] (About the problem to be solved and the effects of the invention) First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and may vary depending on the implementation environment of the invention and the details of the configuration, and may solve only some of the problems described above or achieve only some of the effects described above.

[0135] (Regarding decentralization and integration) In addition, the above-mentioned configuration is a functional concept, and does not necessarily have to be physically configured as shown in the drawings. In other words, the specific form of distribution or integration of each part is not limited to that shown in the drawings, and all or part of it can be functionally or physically distributed or integrated in any unit.

[0136] (About the material) In addition, as for the material of each component described in the above embodiment, any material may be applied as long as the function of the combustion device 100 can be maintained. For example, a part or all of the metal components may be made of resin having fire resistance. In addition, for the material of the head side first connecting pipe 121A and the head side second connecting pipe 122A in FIG. 11 and the material of the second pipe body 52 in FIG. 14, for example, from the viewpoint of smooth rotation of the first pipe body 51, a material may be selected that has a relatively small value of the friction coefficient between the inner surface of the head side first connecting pipe 121A and the head side second connecting pipe 122A in FIG. 11 and the outer surface of the second pipe body 52 in FIG. 14, and as an example, stainless steel, aluminum, or brass may be used.

[0137] (About the biasing member (part 1)) In the above embodiment, the spring member 7 (torsion coil spring) is used as the biasing member, but the present invention is not limited to this. As the biasing member, any component may be used as long as it biases the locking mechanism 6 so that the locking mechanism 6 is rotated toward the "restriction member side first rotation position". For example, any spring other than a torsion coil spring (for example, a torsion spring, a leaf spring, a spiral spring, etc.) may be used, or a component formed of an elastic body such as rubber may be used. In this case, the mounting position of the biasing member is arbitrary, and for example, the biasing member may be provided directly below the locking mechanism 6 in FIG. 16 (on the lower side of the drawing).

[0138] (About the biasing member (part 2)) In the above embodiment, the biasing direction may be changed as desired using a biasing member. For example, the locking mechanism 6 may be biased so as to rotate toward the "regulating member side second rotation position". In addition, when biasing by a biasing member is not necessary, the biasing member may be omitted, and the locking mechanism 6 may be configured to rotate to the "regulating member side first rotation position" or the "regulating member side second rotation position" based on an external force applied by the user's fingers.

[0139] (About the five virtues section) Furthermore, with regard to the trivet section 4 in FIG. 13 described in the above embodiment, for example, the distance between the first trivet section 41 and the second trivet section 42 in the Y-axis direction can be set arbitrarily taking into consideration the size of the object expected to be placed on it, and as one example, it may be set to approximately 70 millimeters, or it may be set to another distance.

[0140] In addition, the configuration (e.g., number, position, shape, size, etc.) of the straight portions and protruding portions in each trivet portion 4 in FIG. 5 may be changed as desired, for example, taking into consideration the use of the combustion device 100. For example, at least a portion of the protruding portions 412B and 422B on the end sides may be omitted, or at least a portion of the protruding portions 412A and 422A near the center may be omitted.

[0141] 13 may be extended so that the end protruding portions 412B and 422B also face the burner head portion 12. In addition, the length of the burner head portion 12 in FIG.

[0142] (About the locking mechanism) The configuration of the lock mechanism 6 in Fig. 15 described in the above embodiment may be changed as desired as long as it functions as a restricting member. For example, the number of first protrusions 62 of the lock mechanism 6 in Fig. 15 may be changed to only one, or to three or more. In this case, the configuration of the main body 1 may be changed as appropriate so that an operation similar to "(rotation of the first tubular body)" described in the embodiment is possible.

[0143] (Variations of Combustion Equipment) Also, the configuration of part of the combustion device 100 in Fig. 1 may be changed. Fig. 23 to Fig. 30 are drawings showing other combustion devices. Fig. 23 to Fig. 27 are drawings showing the combustion device 100A, Fig. 28 to Fig. 29 are drawings showing the combustion device 100B, and Fig. 30 is a drawing showing the combustion device 100C. Also, in Fig. 25, for the sake of convenience of explanation, the illustration of the many flame holes provided in the burner head portion 12A is omitted.

[0144] ===Part 1=== The windshield unit 3 and trivet unit 4 of the combustion device 100 in FIG. 1 may be changed to the windshield unit 3A and trivet unit 4A of the combustion device 100A in FIGS. 23 to 27, and the other configurations may be the same or may be changed.

[0145] The trivet 4A of the combustion device 100A in FIG. 23 is integral with a part of the windshield 3A, and is formed by, for example, bending a metal plate. As shown in FIGS. 23 to 26, the upper end (+Z direction) of the trivet 4A is bent. Therefore, a top surface that is a horizontal surface is formed at the upper end of the trivet 4A, and the top surface can stably support an object. In addition, like the combustion device 100 in FIG. 1 described in the embodiment, the combustion device 100A can be transformed into the usage state in FIGS. 23 to 26 or the storage state in FIG. 27 (the same applies to the combustion devices 100B and 100C described later).

[0146] ===Part 2=== The windshield 3A and trivet 4A of the combustion device 100A in Fig. 23 may be changed to the windshield 3B and trivet 4B of the combustion device 100B in Fig. 28, and other configurations may be the same or may be changed. For example, it may be configured as the combustion device 100B in Fig. 29.

[0147] The windshield unit 3B of the combustion device 100B is configured to be fixed at a different angle from the windshield unit 3A of the combustion device 100A (Fig. 26). For example, as shown in Fig. 29, the side wall 31B of the windshield unit 3B is configured to be fixed in a vertical position. In the trivet unit 4B of Figs. 28 and 29, the top surface of the windshield unit 3A of Fig. 23 is omitted.

[0148] ===Part 3=== The structure around the misuse prevention pin 55A of the combustion device 100A of Fig. 23 may be modified, and other configurations may be the same or may be modified. For example, the misuse prevention pin 55A may be omitted as in the combustion device 100C of Fig. 30.

[0149] (About combinations) In addition, the configurations of the above-described embodiments and the features of the modified examples may be combined in any manner. For example, some of the components of the combustion device 100 may be replaced with components similar to those of a known combustion device.

[0150] (Additional Note) The combustion device of Appendix 1 is a combustion device that burns gaseous fuel supplied from a fuel supply source, and includes: a main body having a burner head provided with a flame hole for ejecting the gaseous fuel; a passage tube that serves as a passage for the gaseous fuel from the fuel supply source side to the burner head side, the passage tube being attached rotatably relative to the main body side with one end side of the passage tube as a reference; and a restricting member for restricting rotation of the passage tube relative to the main body side, the restricting member being annularly provided on the outer periphery of the passage tube and being rotatable between a restricting member side first rotation position and a restricting member side second rotation position with the passage tube as a reference, and the passage tube is a passage where the passage tube protrudes from the main body side. The passage pipe is rotatable between a first pipe side rotation position and a second passage pipe side rotation position in which the passage pipe is accommodated on the main body side, and the regulating member has a regulating portion, and when the passage pipe is rotated to the first passage pipe side rotation position or the second passage pipe side rotation position, the regulating portion faces a part of the main body side and gets caught thereon to regulate the rotation of the passage pipe relative to the main body side when the regulating portion is rotated to the first regulating member side rotation position, and when the passage pipe is rotated to the first passage pipe side rotation position or the second passage pipe side rotation position, the regulating portion does not face the main body side and does not get caught thereon, so does not regulate the rotation of the passage pipe relative to the main body side when the regulating portion is rotated to the second regulating member side rotation position.

[0151] The combustion device of Appendix 2 is the combustion device described in Appendix 1, wherein the regulating member has an operating portion for operating the rotation of the regulating member, the operating portion protruding from an outer peripheral surface of the regulating member.

[0152] The combustion device of supplementary note 3 is the combustion device according to supplementary note 1, wherein the restricting member is biased toward the restricting member first pivot position by a biasing member.

[0153] The combustion device of Appendix 4 is the combustion device described in any one of Appendixes 1 to 3, wherein the burner head portion has a first burner head portion and a second burner head portion extending along a first direction and arranged approximately parallel to each other at a predetermined interval in a second direction perpendicular to the first direction, and further comprises an extension tube extending from one end side of the passage tube toward both sides in the second direction intersecting with the passage tube, the extension tube serving as a passage for the gaseous fuel, wherein one end side of the extension tube is provided in a first internal space of the first burner head portion that is connected to the flame hole of the first burner head portion, and the other end side of the extension tube is provided in a second internal space of the second burner head portion that is connected to the flame hole of the second burner head portion.

[0154] The combustion device of Appendix 5 is the combustion device described in Appendix 1, wherein the burner head portion extends along a first direction and has a first burner head portion and a second burner head portion that are arranged approximately parallel to each other and at a predetermined interval in a second direction perpendicular to the first direction, and further comprises a trivet portion on which an object to be heated by combustion of the gaseous fuel is placed, the trivet portion having a first trivet portion arranged along the first direction at a position corresponding to the first burner head portion, and a second trivet portion arranged along the first direction at a position corresponding to the second burner head portion.

[0155] The combustion device of Appendix 6 is the combustion device described in Appendix 5, wherein the first trivet has a first trivet side straight portion that is parallel to the first direction and a first trivet side protruding portion that protrudes toward the second trivet side at a predetermined position where the first trivet side straight portion extends, and the second trivet has a second trivet side straight portion that is parallel to the first direction and a second trivet side protruding portion that protrudes toward the first trivet side at a predetermined position where the second trivet side straight portion extends.

[0156] The combustion device of Appendix 7 is the combustion device described in Appendix 6, wherein the straight portion on the first trivet side does not face the first burner head portion in the direction of spraying the gaseous fuel, the protruding portion on the first trivet side faces the first burner head portion in the direction of spraying the gaseous fuel, the straight portion on the second trivet side does not face the second burner head portion in the direction of spraying the gaseous fuel, and the protruding portion on the second trivet side faces the second burner head portion in the direction of spraying the gaseous fuel.

[0157] (Effect of supplementary notes) According to the combustion device described in Supplementary Note 1, since the passage tube is rotatable between the first passage tube side rotation position and the second passage tube side rotation position, for example, the combustion device can be stored compactly while maintaining the convenience of the combustion device during use, thereby improving convenience. Also, for example, it becomes possible to reliably restrict or release the restriction on the rotation of the passage tube by a relatively simple action of rotating the restricting member.

[0158] According to the combustion device described in Supplementary Note 2, by having an operating portion protruding from the outer circumferential surface of the restricting member, for example, it is possible to improve the operability of the restricting member.

[0159] According to the combustion device described in Appendix 3, the regulating member is biased toward the first rotation position on the regulating member side, so that, for example, when no external force is applied from the user's fingers, the regulating member can be rotated to the first rotation position on the regulating member side to regulate the rotation of the passage pipe body, thereby making it possible to prevent rotation of the passage pipe against the user's intention.

[0160] According to the combustion device described in Appendix 4, one end side of the extension tube is provided in the first internal space of the first burner head portion, and the other end side of the extension tube is provided in the second internal space of the second burner head portion, thereby making it possible, for example, to reliably eject gaseous fuel through each burner head portion.

[0161] According to the combustion device described in Appendix 5, by having a first trivet provided at a position corresponding to the first burner head portion and a second trivet provided at a position corresponding to the second burner head portion, for example, the object can be reliably supported at an appropriate position, so that the object can be heated efficiently and the convenience of the combustion device can be improved.

[0162] According to the combustion device described in Appendix 6, the first trivet has a straight portion on the first trivet side and a protruding portion on the first trivet side that protrudes toward the second trivet side, and the second trivet has a straight portion on the second trivet side and a protruding portion on the second trivet side that protrudes toward the first trivet side, making it possible, for example, to stably support an object.

[0163] According to the combustion device described in Appendix 7, the straight portion on the first trivet side and the straight portion on the second trivet side do not face the first burner head portion and the second burner head portion, and the protruding portion on the first trivet side and the protruding portion on the second trivet side face the first burner head portion and the second burner head portion. As a result, for example, it is difficult for a flame generated by combustion to hit the straight portion on the first trivet side and the straight portion on the second trivet side, and therefore it is possible to reduce the amount of temperature rise of the entire trivet while stably supporting an object. [Explanation of symbols]

[0164] 1 Main unit 2 Ignition part 3 Windshield 3A Windshield 3B Windshield part 4. Trivet 4A Trivet 4B Trivet Club 5 Connection parts 6 Locking mechanism 7 Spring material 7A one end 11 Base 12 Burner head 12A Burner head 13 Concave side bent piece 14 Heat shield 15 Spark plug 16 ignition plate 21 Switch section 31B Side wall part 41 1st Gotoku Department 42 Second Gotoku Department 51 First Pipe Body 52 Second Body 53 Appliance valve 54 Knob 55 Anti-misuse pin 55A Anti-misuse pin 61 Circular section 62 1st protrusion 63 Second protrusion 64 long hole 100 Combustion equipment 100A Combustion Device 100B Combustion device 100C Combustion device 111 Recess 112 Opening 120 flame hole 121 First burner head 122 Second burner head section 121A Head side first connecting pipe 122A Head side second connecting pipe 141 Part 1 142 Part 2 143 Part 3 200 Ignition side mounting part 300 Windshield side mounting part 411 Straight section 412 Projecting part 412A Protruding part 412B Projecting part 421 Straight section 422 Protruding part 422A Protruding part 422B Projecting part 511 Protrusion 900 Installation surface 901 Gas Cartridge A1 Arrow

Claims

1. A combustion device that combusts a gaseous fuel supplied from a fuel supply source, a main body having a burner head provided with a flame hole for ejecting the gaseous fuel; a passage pipe which serves as a passage for the gas fuel from the fuel supply source to the burner head, the passage pipe being attached rotatably with respect to the main body with one end of the passage pipe as a reference; a restricting member for restricting rotation of the passage pipe relative to the main body, the restricting member being annular and provided on an outer periphery of the passage pipe, the restricting member being rotatable between a restricting member-side first rotation position and a restricting member-side second rotation position with respect to the passage pipe, the passage pipe is rotatable between a passage pipe-side first rotation position where the passage pipe protrudes from the main body portion side and a passage pipe-side second rotation position where the passage pipe is accommodated in the main body portion side, The regulating member has a regulating portion, The regulating portion is when the passage pipe is rotated to the passage pipe side first rotation position or the passage pipe side second rotation position, and the restricting portion is rotated to the restricting member side first rotation position, the restricting portion faces and gets caught on a part of the main body portion side, thereby restricting the rotation of the passage pipe relative to the main body portion side, When the passage pipe is rotated to the passage pipe side first rotation position or the passage pipe side second rotation position, when the regulating portion is rotated to the regulating member side second rotation position, the regulating portion does not face the main body portion side and is not caught thereon, and does not regulate the rotation of the passage pipe relative to the main body portion side. Combustion device.

2. The regulating member has an operating portion for operating the rotation of the regulating member, the operating portion protruding from an outer circumferential surface of the regulating member. The combustion device of claim 1 .

3. The regulating member is biased toward the regulating member first pivot position by a biasing member. The combustion device of claim 1 .

4. The burner head portion extends along a first direction, and includes a first burner head portion and a second burner head portion that are provided substantially parallel to each other at a predetermined interval in a second direction perpendicular to the first direction, the fuel supply pipe further includes an extension pipe extending from one end side of the passage pipe toward both sides in the second direction intersecting with the passage pipe, the extension pipe serving as a passage for the gas fuel, One end side of the extension pipe is provided in a first internal space of the first burner head portion, the first internal space being in communication with the burner hole of the first burner head portion, The other end side of the extension pipe is provided in a second internal space of the second burner head portion, the second internal space being in communication with the burner hole of the second burner head portion. A combustion device according to any one of claims 1 to 3.

5. The burner head portion extends along a first direction, and includes a first burner head portion and a second burner head portion that are provided substantially parallel to each other at a predetermined interval in a second direction perpendicular to the first direction, The gas stove further includes a trivet on which an object to be heated by the combustion of the gas fuel is placed, The trivet portion is a first trivet portion provided along the first direction at a position corresponding to the first burner head portion; A second trivet portion is provided along the first direction at a position corresponding to the second burner head portion. The combustion device of claim 1 .

6. The first five virtues section is A straight portion on the first trivet side parallel to the first direction; a first trivet-side protruding portion protruding toward the second trivet-side at a predetermined position where the first trivet-side straight portion extends, The second five virtues section is A straight portion on the second trivet side that is parallel to the first direction; and a second trivet-side protruding portion protruding toward the first trivet side at a predetermined position where the second trivet-side straight portion extends. The combustion device according to claim 5.

7. The first trivet-side straight portion does not face the first burner head portion in a direction in which the gas fuel is ejected, the first trivet-side protruding portion faces the first burner head portion in a direction in which the gas fuel is ejected, The second trivet-side straight portion does not face the second burner head portion in a direction in which the gas fuel is ejected, The second trivet-side protruding portion faces the second burner head portion in a direction in which the gas fuel is ejected.

7. The combustion device according to claim 6.

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