JP6229858B1 - Multipurpose gas appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the compactness, portability and cost-effectiveness of an entire device, improve handling and durability, and increase the effectiveness and versatility as a multi-function product, as well as practicality and convenience. . SOLUTION: A body portion 2 provided with a cylinder mounting portion 3 at one end, and a ratio of one vertical and horizontal dimension Lh of 10% or less with respect to the other dimension Lv provided at the other end of the body portion 2. A crater head part 4 having an elongated igniter 4s, a trivet part 5 disposed above the crater head part 4, and the body part 2 are provided inside the crater head part 3 to the crater head part. 4 and a gas flow passage 6 through which the gas fuel G is circulated, and a burner mode MB or gas flow passage 6 in which a predetermined amount of air A is supplied to and mixed with the gas flow passage 6 by being provided in the body portion 2. And a mode switching mechanism 7 that can switch to the lantern mode ML that shuts off the air A supplied to the air. [Selection] Figure 1

Description

  The present invention relates to a multipurpose gas appliance having a plurality of functions used for at least different purposes by burning a gas fuel supplied from a gas cylinder.

  Generally, since there are many cases where electricity cannot be used outdoors such as camping, portable gas appliances are exclusively used. For this reason, various gas appliances according to applications have been proposed. For example, Patent Document 1 discloses a portable gas burner, and Patent Document 2 discloses a portable lantern.

  In this case, the portable gas burner of Patent Document 1 continuously feeds the air / fuel mixing pipe upward from the upper surface of the valve block that is screwed and fixed to the upper wall of the portable container storing the liquefied petroleum gas. A burner head is arranged at the upper end of the pipe, and the five virtues are arranged in a state of holding the burner head, and a windshield cylinder in which the burner head is connected to the upper end of the air-fuel mixing pipe, and an inside of the windshield cylinder The burner element is formed with a metal fiber burner element, and the burner element is arranged so as to face the air-fuel mixture outlet of the air-fuel mixing tube. In addition, the portable lantern disclosed in Patent Document 2 includes a cylinder mounting portion that is detachably connected to a gas cylinder, a burner that burns fuel gas from the gas cylinder, a mantle that covers the outside of the burner and emits white light by burning the burner. In the portable lantern comprising the above, the burner is formed of a cylindrical body having a large number of flame holes of the same hole diameter, and gradually contracts from the side of the cylindrical body facing the gas cylinder side toward the gas cylinder side. A gas flow rate adjusting member having a diameter is inserted.

  However, since such a conventional gas appliance has only a single function, a different gas appliance corresponding to each purpose of use is required in actual outdoor activities such as camping. Therefore, it is usually necessary to prepare a plurality of gas appliances, and there is a disadvantage in that it is disadvantageous in terms of portability and cost.

  On the other hand, in order to solve this problem, a multi-function gas appliance having a plurality of functions in one unit has also been proposed in Patent Document 3. This multi-function gas appliance is intended to be used for multiple functions by providing multiple heads on a single instrument and switching the gas supply to each head according to the function to be used. Specifically, the base member, a case member that is rotatably supported with respect to the base member, a plurality of gas combustion members that are radially arranged and fixed to the base member, and the base member are provided. A gas-receiving member, a switching valve that switches the flow path of regas by rotation of the case member relative to the base member and supplies gas to any one of the gas combustion members, and a case member attached to the case member. According to the moving position, it is comprised from the plate-shaped member located in the back part of one of the gas combustion members.

JP-A-11-230513 JP 2001-84802 A Japanese Patent Laid-Open No. 10-30822

  However, the above-described conventional multi-function gas appliance (Patent Document 3) has the following problems.

  First of all, only the legs and gas cylinders are shared, and the head parts that are the main parts are configured separately, and each is used by selectively switching, so a switching mechanism for switching is also newly added There is a need to. Therefore, even if the purpose of combining multiple functions in one unit can be achieved, it is still insufficient from the viewpoint of improving portability and low cost by reducing the number of parts and making the entire device compact. There was room for further improvement. In addition, since the gas fuel supply system is switched, the switching mechanism also tends to be complicated, and on the other hand, there is a disadvantage that it is disadvantageous in terms of handling properties and durability.

  Secondly, it is not sufficient from the viewpoint of securing the entire utility value because it is only multifunctional including a burner function and a heater function. That is, since outdoor activities, particularly camping, are performed during the summer, the heater function has almost no opportunity to use, and it is considered that an extra thing that gets in the way is added. Eventually, the use is limited, such as for use in mountain climbing camps at high altitudes, and further improvements are made from the viewpoint of enhancing the effectiveness and versatility as a multi-function gas appliance, as well as practicality and convenience. There was room.

  The object of the present invention is to provide a multipurpose gas appliance that solves the problems in the background art.

  In order to solve the above-mentioned problems, the present invention is a multipurpose gas appliance 1 having a plurality of functions used for at least different purposes by burning gas fuel G supplied from a detachable gas cylinder B mounted on a cylinder mounting section. Is provided at the other end of the body portion 2 with the cylinder mounting portion 3 at one end, and the ratio of one vertical and horizontal dimension Lh to the other dimension Lv is 10% or less. A crater head portion 4 having an igniter port 4 s formed in an elongated shape, a trivet portion 5 disposed above the crater head portion 4, and the body portion 2, thereby providing a crater head from the cylinder mounting portion 3. The gas flow passage 6 for allowing the gas fuel G to flow through the portion 4 and the burner for supplying at least a predetermined amount of air A to the gas flow passage 6 to be mixed by being provided in the body portion 2. Characterized by comprising a switchable mode switching mechanism 7 lanthanum mode ML blocking the air A supplied to the over-de MB or gas flow passage 6.

  In this case, according to a preferred aspect of the invention, the mode switching mechanism 7 can be provided with an air amount variable function Fa that varies the amount of air A supplied to the gas flow passage 6. Further, the body part 2 can be provided with a gas amount adjusting mechanism 11 for changing the flow rate of the gas fuel G flowing through the gas flow passage 6. Further, the body portion 2 can be provided with a glass ignition port cover 12 formed in a cylindrical shape surrounding at least the periphery of the ignition port 4s.

  According to the multipurpose gas appliance 1 which concerns on this invention which has such a structure, there exist the following remarkable effects.

  (1) When multiple (two) functions are provided in one unit, in addition to the legs and gas cylinders, the head part, which is the main part, can be shared, so the number of parts can be greatly reduced and the entire instrument can be made compact. In addition, portability and low cost can be improved. In addition, since each function can be switched only by opening and closing the air passage, the switching mechanism can also be configured simply, and handling and durability can be improved.

  (2) Since the burner mode MB and the lantern mode ML are provided as a plurality of functions, for example, outdoor activities such as camping during the summer period are all highly necessary functions, and the overall utility value as the multipurpose gas appliance 1 Can be increased. As a result, the effectiveness and versatility as a multi-function product, and further practicality and convenience can be greatly enhanced. In particular, in the lantern mode ML, the shape of the ignition port 4s is devised so as to secure the light quantity, so that it is difficult to wear and breaks easily, and a mantle whose running cost cannot be ignored can be eliminated.

  (3) According to a preferred embodiment, if the mode switching mechanism 7 is provided with an air amount variable function Fa that varies the amount of air A supplied to the gas flow passage 6, in either the burner mode MB or the lantern mode ML However, since the mixing ratio of the gas fuel G and the air A can be variably adjusted, fine adjustment (optimization) can be performed according to the usage environment and preferences, and in particular, generation of soot in the burner mode MB is prevented. be able to.

  (4) If the gas amount adjusting mechanism 11 for changing the flow rate of the gas fuel G flowing through the gas flow passage 6 is provided in the body portion 2 according to a preferred embodiment, the flow rate of the gas fuel G can be changed as in the prior art. Therefore, in the burner mode MB, the heating power (amount of heat) can be adjusted, and in the lantern mode ML, the brightness can be adjusted, so that both modes MB and ML can be used effectively.

  (5) According to a preferred embodiment, if the body portion 2 is provided with a glass ignition port cover 12 formed in a cylindrical shape surrounding at least the ignition port 4s, it can function as a transparent enclosure. It can be effectively used as a windshield cover and a protective cover in both mode MB and lantern mode ML.

An external front view of a multipurpose gas appliance according to a preferred embodiment of the present invention, External plan view of the multipurpose gas appliance, A longitudinal cross-sectional view (a) and a transverse cut-away view (b) (c) of a crater head portion provided for the multipurpose gas appliance, External perspective view of the crater head, External plan view showing a modification example of the crater head part, A partially sectional front view showing the inside of the body part in the burner mode of the multipurpose gas appliance, Partial cross-sectional front view showing the inside of the body part in the lantern mode of the multipurpose gas appliance, Explanatory drawing of burner mode in the multipurpose gas appliance, Use explanatory drawing of the lantern mode in the multipurpose gas appliance,

  Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

  First, the structure of the multipurpose gas appliance 1 which concerns on this embodiment is demonstrated concretely with reference to FIGS.

  The whole structure of the multipurpose gas appliance 1 which concerns on this embodiment is shown in FIG.1 and FIG.2. The multipurpose gas appliance 1 includes a cylindrical block-shaped body portion 2 integrally formed of a heat-resistant material such as metal, and a cylinder mounting portion 3 is provided at the lower end (one end) of the body portion 2. Therefore, the connection port of the separate gas cylinder B can be attached to and detached from the cylinder mounting portion 3 in a screwed manner. The gas cylinder B contains a gas fuel G such as liquefied petroleum gas, and is installed in the cylinder installation part 3 and used in the gas flow passage 6 in the body part 2 as shown in FIG. The gas fuel G can be supplied and can be detached from the cylinder mounting portion 3 when not in use.

  A crater head portion 4 is provided at the upper end (the other end) of the body portion 2. The crater head portion 4 is formed of a heat-resistant material such as metal, and has an overall shape in which the upper half of a cylindrical body having an axial core arranged in the vertical direction is crushed as shown in FIG. 4 (FIG. 3). . Thereby, an ignition port 4 s for burning the gas fuel G is formed at the upper end of the crater head portion 4. As shown in FIG. 3 (b), the ignition port 4s has an elongated shape in which one of the vertical and horizontal dimensions Lh is 10% or less, preferably 1 to 5% with respect to the other dimension Lv. To form. By making the ignition port 4s into such a shape (condition), the amount of light when used as the lantern mode ML can be secured. Therefore, it is possible to eliminate the mantle that has been generally used for lanterns and that is difficult to wear and easily broken, and whose running cost cannot be ignored.

  In this case, the elongated shape is not only formed into a simple slit shape as shown in FIG. 4, but also formed into a + shape obtained by crossing two slit shapes as shown in FIG. In addition, various shapes satisfying the dimensional ratio, such as arbitrarily combining a plurality of slit shapes, are included, and it does not matter whether such slit shapes are linear shapes or curved shapes. The lower half of the crater head portion 4 is formed as an attachment portion 4 c that is attached to the upper end of the body portion 2. For this reason, the internal thread part 21 is formed in the internal peripheral surface of the attaching part 4c used as a cylinder shape. As shown in FIG. 6, the female screw portion 21 can be screwed onto a cylindrical male screw portion 22 formed at the upper end of the body portion 2.

  On the other hand, a gas flow passage 6 penetrating along the axial direction (vertical direction) Ds is provided at the inner center position of the body portion 2 as shown in FIG. The lower portion of the gas flow passage 6 is a small diameter passage 6d, and the upper portion is a large diameter passage 6u. As a result, a gas flow passage 6 through which the gas fuel G flows from the cylinder mounting portion 3 to the crater head portion 4 is formed.

  Further, a mode switching mechanism 7 that can be switched to the burner mode MB or the lantern mode ML is provided at an intermediate position in the axial direction Ds of the body portion 2. In this case, as shown in FIGS. 1 and 2, a cylindrical air introduction portion 27 that protrudes in the horizontal direction and has an air passage 27s therein is integrally formed on the side surface of the body portion 2, and FIGS. As shown in FIG. 7, a cock portion 28 having a rotation axis perpendicular to the air passage 27 s is built in an intermediate position of the air introduction portion 27. The cock portion 28 is formed with an opening / closing passage 28 s that is perpendicular to the rotation axis (radial direction), and the cock portion 28 has an L-shaped operation lever that protrudes outside the body portion 2. 29 is provided integrally.

  As a result, when the operating lever 29 is turned and the open / close passage 28s is positioned at a right angle to the air passage 27s as shown in FIG. 7, the air passage 27s can be fully closed, When the operating lever 29 is turned 90 [°] from this position and the open / close passage 28s is positioned coaxially with the air passage 27s as shown in FIG. 6, the air passage 27s is fully opened. be able to. That is, at least the burner mode MB shown in FIG. 6 for supplying and mixing a predetermined amount of air A to the gas flow passage 6, or the lantern shown in FIG. 7 for blocking the air A supplied to the gas flow passage 6. A mode switching mechanism 7 that can be switched to the mode ML is configured.

  This mode switching mechanism 7 also serves as an air amount variable function Fa. That is, if the turning position of the operation lever 29 is set to an arbitrary intermediate position between the fully closed state and the fully open state, the size of the effective cross-sectional area of the air passage 27s becomes a size corresponding to this intermediate position. The amount of air A supplied to the flow passage 6 can be varied. If such an air amount variable function Fa is provided, the mixing ratio of the gas fuel G and the air A can be variably adjusted in both the burner mode MB and the lantern mode ML. There is an advantage that (optimization) can be performed.

  Further, a gas amount adjusting mechanism 11 is provided in the body portion 2 located on the upstream side of the mode switching mechanism 7. The gas amount adjusting mechanism 11 has a function of changing the opening of the small diameter passage 6d, that is, arbitrarily adjusting the opening from the fully closed state to the fully open state. The illustrated gas amount adjusting mechanism 11 includes a valve body rod 23 that is displaceable in a direction orthogonal to the small-diameter passage 6d, a screw shaft 24 that is provided integrally with the valve body rod 23, and a screw shaft 24 that is provided integrally with the screw shaft 24. The operation knob 25 is configured. Accordingly, if the operation knob 25 is operated by rotating in the forward direction or the reverse direction, the screwing shaft 24 can be moved back and forth, so that the valve rod 23 is also moved back and forth in the orthogonal direction with respect to the small diameter passage 6d. As a result, if the valve body rod 23 is displaced to the most advanced position, the small diameter passage 6d is fully closed, and if the valve body rod 23 is displaced to the last retracted position, the small diameter passage 6d is fully opened. A gas amount adjusting mechanism 11 in which the flow rate of the gas fuel G changes between the most advanced position and the most retracted position of the rod 23 is configured.

  If such a gas amount adjusting mechanism 11 is provided, the flow rate of the gas fuel G can be varied as in the conventional case. Therefore, the heating power (heat amount) can be adjusted in the burner mode MB, and the brightness in the lantern mode ML. There is an advantage that both modes MB and ML can be used effectively, such as being able to adjust the height.

  Since the mode switching mechanism 7 having the air amount variable function Fa and the gas amount adjusting mechanism 11 basically have the same function, the structure of the gas amount adjusting mechanism 11 is applied to the structure of the mode switching mechanism 7. Alternatively, the structure of the mode switching mechanism 7 may be applied to the structure of the gas amount adjusting mechanism 11. Alternatively, other structures that exhibit the same function can be applied.

  On the other hand, the body part 2 is provided with a glass ignition port cover 12 formed in a cylindrical shape surrounding at least the periphery of the ignition port 4s. In the case of illustration, a support member 31 is prepared by combining four stays arranged at equal intervals in the circumferential direction, and the lower end of the ignition port cover 12 is supported by the upper end of the support member 31. The lower end was fixed to the lower end of the body part 2. Thereby, the ignition port cover 12 is supported at a predetermined height by the support member 31. Therefore, if such an ignition port cover 12 is provided, it can function as a transparent enclosure, so that there is an advantage that it can be effectively used as a windshield cover and a protective cover in both the burner mode MB and the lantern mode ML.

  A trivet portion 5 is disposed above the crater head portion 4. In the case of the example, a cylindrical mounting portion 41 that is fitted to the lower end portion of the gas cylinder B is provided, and the lower end portion of the gas cylinder B is held by the cylindrical mounting portion 41 and arranged at regular intervals in the circumferential direction of the cylindrical mounting portion 41. The trivet portion 5 is supported by the four pipe-shaped support portions 42. That is, the illustrated trivet portion 5 includes four trivet members 5m, and a pan or the like can be placed on the upper end by inserting the lower end of each trivet member 5m into a support hole provided in the support portion 42. A trivet portion 5 is formed. At this time, each of the trivet members 5m is integrally provided with a stopper 5ms, and the stopper 5ms is locked to the support portion 42, whereby the downward displacement regulating function and the rotation direction of the trivet members 5m are ... It has a function to prevent rotation. Therefore, the trivet portion 5 can be attached to and detached from the cylindrical mounting portion 41.

  45... Are four legs attached at equal intervals along the circumferential direction to the bottom surface of the bottom of the cylindrical mounting part 41. Each leg 45... It becomes possible. As a result, the legs 45 can be folded, and can be set at the use position with the tip extended outward as shown in FIGS. 1 and 2, and switched to the retracted position with the tip folded inward. be able to.

  With the above configuration, by burning the gas fuel G supplied from the detachable gas cylinder B mounted on the cylinder mounting section 3, at least a plurality of functions used for different purposes, that is, two functions (burner mode MB, lantern) A multipurpose gas appliance 1 with mode ML) is constructed.

  Next, the function and usage of the multipurpose gas appliance 1 according to the present embodiment will be described with reference to FIGS.

  When the multipurpose gas appliance 1 is used, a separately prepared gas cylinder B is mounted on the cylinder mounting portion 3 of the body portion 2 as shown in FIGS. At this time, both the mode switching mechanism 7 and the gas amount adjusting mechanism 11 are set in a fully closed state. In addition, a separately prepared cylindrical mounting portion 41 is mounted on the lower end of the gas cylinder B, and the four leg portions 45 of the cylindrical mounting portion 41 are set at a use position widened outward. This completes the basic setting for use. When not used, each part can be separated (disassembled) according to the opposite procedure.

  The multipurpose gas appliance 1 according to the present embodiment is configured to supply a predetermined amount of air A to the gas flow passage 6 and mix the burner mode MB, or to lantern mode ML to block the air A supplied to the gas flow passage 6. It can be used by switching to

  First, the usage method in the burner mode MB will be described. In the burner mode MB, four trivet members 5m are prepared, and the lower ends of the respective trivet members 5m are inserted into support holes provided in the support portions 42 so that the trivet portions 5 can be used. Thereby, as shown in FIG. 8, the pan W etc. are mounted in the upper end of the trivet part 5, and the use as a burner (gas stove) is attained.

  In use, the operation knob 25 in the gas amount adjusting mechanism 11 is turned and operated to gradually open the gas flow passage 6 (small-diameter passage 6d) from the fully closed position, and the ignition port 4s using an ignition device or the like. Ignition. Further, when the operation lever 29 in the mode switching mechanism 7 is turned and operated, the mode is switched to the upwardly raised position shown in FIG. As a result, the opening / closing passage 28s of the cock portion 28 is located coaxially with respect to the air passage 27s of the air introduction portion 27 and is fully opened. As a result, the upper large-diameter passage 6u in the body portion 2 communicates with the atmosphere via the air passage 27s and the open / close passage 28s, and air A is supplied to the large-diameter passage 6u via the air passage 27s and the open / close passage 28s. , Mixed with gas fuel G.

  Thereby, as shown in FIG. 8, the flame FB at the time of combustion becomes a combustion state suitable for a burner because the combustion force is increased when the air A is appropriately mixed. In this case, the flame FB has a bluish color. At this time, the operation knob 25 in the gas amount adjusting mechanism 11 can be turned and operated to adjust the heating power, and the operation lever 29 in the mode switching mechanism 7 can be turned and operated while observing the color of the flame FB. By varying the amount of air A supplied to the gas flow passage 6, the amount of air A can be adjusted to an optimum amount. In particular, it is desirable to prevent generation of wrinkles by this adjustment.

  Next, a usage method in the lantern mode ML will be described. In the lantern mode ML, since the trivet portion 5 is not used, the four trivet members 5m are removed from the support portions 42. Thereby, as shown in FIG. 9, it can be used as a lantern. Further, the operation lever 29 in the mode switching mechanism 7 is operated by turning to switch the position to the side position shown in FIG. Accordingly, the opening / closing passage 28s of the cock portion 28 is positioned at a right angle with respect to the air passage 27s of the air introduction portion 27, and the cock portion 28 is set to the fully closed position.

  In use, the operation knob 25 in the gas amount adjusting mechanism 11 is turned and operated to gradually open the gas flow passage 6 (small-diameter passage 6d) from the fully closed state, and the ignition port 4s using an ignition device or the like. Ignition. As a result, as shown in FIG. 9, a flame FL in which gas fuel G not mixed with air A is burned is generated at the ignition port 4s, and the flame FL is elongated in the lateral direction due to the shape of the ignition port 4s. In this case, the color of the flame FL becomes a brighter yellow color than in the burner mode MB, and by elongating in the horizontal direction, the overall surface area of the flame FL increases, and the combustion state suitable for lanterns It becomes. At this time, the color and brightness of the flame FL can be adjusted by turning the operation knob 25 in the gas amount adjusting mechanism 11 or turning the operation lever 29 in the mode switching mechanism 7 (fine adjustment).

  Therefore, according to such a multipurpose gas appliance 1 according to the present embodiment, as a basic configuration, the body portion 2 provided with the cylinder mounting portion 3 at one end and the other end of the body portion 2 provided with one of the vertical and horizontal sides. A crater head portion 4 having an igniter 4 s formed in an elongated shape with a dimension Lh of 10% or less of the other dimension Lv, and a trivet portion 5 disposed above the crater head portion 4, The gas flow passage 6 that allows the gas fuel G to flow from the cylinder mounting portion 3 to the crater head portion 4 by being provided inside the body portion 2, and at least the gas flow passage 6 by being provided in the body portion 2. A mode switching mechanism 7 capable of switching to a burner mode MB for supplying and mixing a predetermined amount of air A or a lantern mode ML for blocking the air A supplied to the gas flow passage 6 is provided. Duplicate Even when providing the function of (two), in addition to the leg portion and the gas cylinder, it is possible shared head portion to be a major component. As a result, the number of parts can be greatly reduced, the entire device can be made compact, and further, portability and low cost can be improved. In addition, since each function can be switched only by opening and closing the air passage, the switching mechanism can also be configured simply, and handling and durability can be improved.

  In addition, since the burner mode MB and the lantern mode ML are provided as a plurality of functions, for example, outdoor activities such as camping during the summer period are all highly necessary functions, and the overall utility value as the multipurpose gas appliance 1 is increased. Can be increased. As a result, the effectiveness and versatility as a multi-function product, and further practicality and convenience can be greatly enhanced. In particular, in the lantern mode ML, the shape of the ignition port 4s is devised so as to secure the light quantity, so that it is difficult to wear and breaks easily, and a mantle whose running cost cannot be ignored can be eliminated.

  As mentioned above, although preferred embodiment was described in detail, this invention is not limited to such embodiment, It does not deviate from the summary of this invention in a detailed structure, a shape, a raw material, quantity, a numerical value, etc. It can be changed, added, or deleted arbitrarily. For example, although the form which attaches and detaches as the cylinder attachment part 3 was shown, you may comprise by the other form which has the same function. Moreover, although the trivet portion 5 is illustrated as being fixed to the gas cylinder B, it may be fixed to the body portion 2 or may be configured as an independent accessory that is independent using a separate stand or the like. Good. Furthermore, although the case where it switches to burner mode MB or lantern mode ML was shown, you may provide the heater mode which can be used as a heater by attaching a reflecting plate. Note that the air amount variable function Fa and the ignition port cover 12 may be provided arbitrarily, and are not necessarily essential components.

  INDUSTRIAL APPLICABILITY The present invention can be used as a multipurpose gas appliance in the outdoors such as a camp having a plurality of functions used for different purposes such as a burner and a lantern.

  1: multipurpose gas appliance, 2: body part, B: gas cylinder, G: gas fuel, 3: cylinder mounting part, Lh: vertical and horizontal dimension, Lv: vertical and horizontal dimension, 4s: ignition port, 4: crater Head part, 5: Trivet part, 6: Gas flow path, A: Air, MB: Burner mode, ML: Lantern mode, 7: Mode switching mechanism, Fa: Air amount variable function, 11: Gas amount adjusting mechanism, 12: Ignition cover

Claims (4)

  A multi-purpose gas appliance having a plurality of functions used for at least different purposes by burning gas fuel supplied from a detachable gas cylinder attached to a cylinder attachment part, the body part having the cylinder attachment part at one end A crater head portion having an elongated igniter provided at the other end of the body portion and having a longitudinal and lateral dimension of 10% or less of the other dimension, and the crater head portion. A trivet portion disposed above the body portion, a gas flow passage through which gas fuel flows from the cylinder mounting portion to the crater head portion by being provided inside the body portion, and at least the above by being provided in the body portion. A burner mode in which a predetermined amount of air is supplied to the gas flow passage and mixed, or a lantern mode in which the air supplied to the gas flow passage is shut off Multipurpose gas appliance, characterized by comprising a conversion possible mode switching mechanism.   The multi-purpose gas appliance according to claim 1, wherein the mode switching mechanism has an air amount variable function for changing an amount of air supplied to the gas flow passage.   The multipurpose gas appliance according to claim 1, wherein the body portion includes a gas amount adjusting mechanism that varies a flow rate of the gas fuel flowing through the gas flow passage.   The multipurpose gas appliance according to claim 1, wherein the body portion includes a glass ignition port cover formed in a cylindrical shape surrounding at least the periphery of the ignition port.

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