JPH08261471A - Liquefied gas container direct connection type burner capable of changing flame forming position - Google Patents

Abstract

PURPOSE: To provide a gas burner in which a stable flame can be formed even under a case of lower flame power with an adjusted amount of supplied gas amount so as to enable a stable flame power and a uniform heated sate to be attained. CONSTITUTION: A plurality of rows of flame ports are formed in a concentric manner at an upper surface wall 9 of a burner part 6 of a mushroom-shaped gas burner directly connected to a gas catridge 2 in its operation. A partition wall 16 is arranged in a mixture gas communicating spacing 10 formed inside the burner part 6 so as to divide the inner spacing 10 into an inner segment and an outer segment. A communication port 20 communicating the inner and outer spacings 18, 19 is formed at the partition wall 16, and a closing plug 21 is correspondingly installed at the communication port 20. The communication port 20 is opened under an action of this closing plug 21, thereby a high fire power state using an inner flame port 15 opened to the inner spacing 18 and both flame ports 13, 15 of the outer flame port 13 opened into the outer spacing 19 and a low fire power state closing the communication port 20 and using only the inner flame port 15 can be changed over and can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable gas burner used for cooking food in outdoor activities such as mountain climbing, camping, hiking, etc., and more particularly to a gas cartridge for attaching / detaching an appliance plug block directly connected to a crater forming member. The present invention relates to a portable gas burner that is freely fixed.

[0002]

2. Description of the Related Art In recent years, outdoor activities have become popular, and burners used for cooking food and drink at that time have a burning crater member in a gas cartridge storing liquefied gas because of portability and easy handling. There are many types that are directly connected and used. Conventionally, as a portable gas burner of this type, for example, as disclosed in Japanese Utility Model Laid-Open No. 5-69506, a valve unit detachably connected to the upper end of a gas cartridge containing liquefied gas, and this valve unit. And a mushroom-shaped burner unit derived from the upper part of the burner unit. It had a structure composed of and.

[0003]

However, in the conventional portable burner, the upper wall of the disc-shaped burner is formed in a shape in which the annular mountain fold portion is located near the outer periphery, and the annular mountain fold portion is formed. Since the flame opening was formed on the outer inclined surface in (3), the wind directly acts on this flame opening. When the amount of gas jetted is large, there is no problem because the gas jetting power is sufficiently strong, but in medium or low heat conditions where the flow control valve of the valve unit is throttled, the gas jetting power from the flame mouth Since it became weak, it was not possible to resist the force of the wind, and there were cases where the flame was small on the windward side or no flame was generated at all. As a result, there are problems that a stable heating power cannot be obtained and the heating state becomes uneven. The present invention has been proposed in view of these points,
Stable flame formation even when the amount of gas supplied is small
The purpose is to obtain a stable heating power and a uniform heating state.

[0004]

In order to achieve the above-mentioned object, the present invention has a structure in which a plurality of flame port rows are concentrically formed on the upper surface wall of a burner section and the mixture communication formed inside the burner section. A partition wall is arranged in the space to partition the inner space into the inner space and the inner space, and a communication port that communicates the inner space and the outer space is formed in the partition wall, and a closure device is arranged corresponding to the communication port, and the action of the closure device. With a large fire power state that uses both flame openings, an inner flame opening that opens to the inner space and an outer flame opening that opens to the outer space,
It is characterized in that it can be used by switching to a small thermal power state in which only the inner flame port is used by closing the communication port.

[0005]

According to the present invention, the flame port array is concentrically formed in a plurality of rows on the upper wall of the burner section, and the partition wall is arranged in the mixture communication space formed inside the burner section so that the internal space is opened inside and outside. Partition
A communication port that communicates the inner and outer spaces is formed in this partition wall, a closure is arranged corresponding to this communication port, and the communication port is opened by the action of this closure to open the inner flame port and the outer side that open to the inner space. It is configured so that it can be used by switching between a large heat power state that uses both outer flame mouths that open to the space and a small heat power state that uses only the inner flame mouth by closing the communication mouth. Depending on the flow rate, it can be selected to use both the inner and outer flame openings and the inner flame opening.When the supply gas flow rate is reduced, only the inner flame opening formed on the inner inclined surface should be used. Therefore, the influence of the wind is not directly exerted, and stable fire power and combustion state can be maintained.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention, and FIG. 1 is a central longitudinal sectional view of a gas burner. Reference numeral (1) in the figure denotes a gas burner assembled on the upper wall of the gas cartridge (2). This gas burner (1) includes a valve unit (3) screwed to the gas cartridge (2) and the valve unit (3). It is composed of a burner unit (4) led out upward.

This burner unit (4) comprises a mixing pipe (5) drawn upward from the valve unit (3) and the mixing pipe (5).
Disc burner (6) fixed to the upper end of (5) and this burner
It is composed of Gotoku (7) placed in (6). The disc burner (6) is a disc-shaped lower wall (8) fixed to the upper end of the mixing pipe (5).
And an upper surface wall (9) formed in a substantially truncated cone shape, and by externally fitting the lower end portion of the upper surface wall (9) to the peripheral surface portion of the lower surface wall (8) by screwing, The inside is formed as a mixture space (10) for air-fuel mixture. In addition, the upper surface wall (9) formed in the shape of a truncated cone is recessed downward in the central portion,
The outer peripheral edge of the upper end is formed into a mountain-shaped annular protrusion (11).

A large number of outer flame openings (13) are formed on the outer inclined surface (12) of the annular projecting portion (11) and a large number of inner flame openings (15) are formed on the inner inclined surface (14). There is. Further, a partition wall (16) is integrally projected from the lower surface wall (8) inside the air-fuel mixture flow space (10) formed inside the burner (6). The partition wall (16) is formed in a stepped tubular shape having a large diameter in the lower half and a small diameter in the upper half, and the upper end edge of the small diameter upper half has a mountain-shaped annular projection on the upper wall (9). It is in contact with the bent part in (11). In addition, an inner space partitioned by the partition wall (16) at appropriate intervals in the circumferential direction on the connecting wall portion (17) of the large diameter lower half portion and the small diameter upper half portion of the stepped tubular partition wall (16). A communication port (20) between the (18) and the outer space (19) is provided through.

A closure (21) is mounted in an outer space (19) defined by a partition wall (16) in the burner (6). This closure (21) is formed of an aluminum plate in a donut shape,
The inner diameter is formed to be slightly larger than the outer diameter of the small diameter upper half of the partition wall (16). The outer diameter of the closure (21) is formed to be substantially the same as the outer diameter of the large-diameter lower half of the partition wall (16). Therefore, this closure (21) is a partition wall within the outer space (19).
It will be placed on the upper surface of the connecting wall part (17) of (16),
The communication port (20) provided in the connecting wall portion (17) is closed.

The Gotoku (7) is located on the upper surface of the disc burner (6), and the portion near the outer end thereof protrudes outward from the outer peripheral edge of the disc burner (7). Support base (22)
And the leg portion (2) extending downward from the portion protruding from the outer peripheral edge of the disc-shaped burner (7) in the cooker support (22).
3) and the lower end of the leg portion (23) of the Gotoku (7) is fixed to the peripheral edge of the lower end of the upper wall (9) of the disc burner (6) by spot welding.

Reference numeral (24) in the figure denotes a piezoelectric ignition mechanism. This piezoelectric ignition mechanism (24) is attached to and fixed to the support arm (25) by the mixing tube (5) and the tip end of this support arm (25). Attached piezoelectric element
(26), the lead wire (27) derived from the piezoelectric element (26),
It is composed of a discharge electrode (28) formed at the tip of the lead wire (27), and the lead wire (27) penetrates through the inside of the disc burner (6) and the top wall of the disc burner (6) ( It is projected above 9). Further, reference numeral (29) is an outside air introduction port provided through the mixing pipe (5).

In the portable vertical burner thus formed, the burner (1) is joined to the gas cartridge (2) and then the operation knob (30) of the flow rate adjusting valve of the valve unit (3) is operated. The vaporized fuel gas is jetted from the gas cartridge (2), and the suction force accompanying the jetting force sucks the atmosphere into the mixing pipe (5) to mix the air and the fuel gas, and the flame port (13) (15) It is spouted from and is ignited and burned by operating the piezoelectric ignition mechanism (24).

During this combustion, when the valve opening of the flow rate adjusting valve is large, the internal pressure in the inner space (18) in the disc burner (6) is high, and the low pressure fire of which the valve opening of the flow rate adjusting valve is reduced. In the case of a soft fire, the internal pressure in the inner space (18) becomes low. Therefore, when the valve opening of the flow rate adjusting valve is large, the closure (21) is raised by the gas pressure acting on the communication port (20), and
8) (19) communicate with each other to form a flame at the inner and outer flame ports (13) (15). On the other hand, when the valve opening of the flow rate adjusting valve is reduced, the gas pressure acting on the closure (21) via the communication port (20) is low,
Since the pressure cannot push up the weight of the closing tool (21), the closing tool (21) contacts the upper surface of the connecting wall portion (17) and closes the communication port (20). ) Is not supplied with gas, and a flame is formed only at the inner flame mouth (15).

In the above embodiment, the connecting wall portion (17) connecting the small diameter upper half portion and the large diameter lower half portion is formed substantially horizontally, and the closing tool (21) is formed in a flat plate shape. As shown in FIG. 2, the connecting wall portion (17) is formed on the inclined surface of the inward flow, and the closing tool (21) is formed in a funnel shape.
As shown in Fig. 5, the closing tool
(21 may be formed in an umbrella shape.

FIG. 4 shows a modification of the closing device (21), and FIG.
What is shown in (a) is a closure body (31) formed in a horizontal ring shape.
The large-diameter side peripheral edge of the wing piece is bent and deformed downward at a location with appropriate intervals in the circumferential direction along the radial direction.
(32) is formed, and the one shown in FIG. 4 (b) is
Formed into a winglet (32) by bending the large-diameter side peripheral edge of the closure main body (31) formed in a funnel shape at portions at appropriate intervals in the circumferential direction and bending and deforming a part thereof downward in the radial direction. The object shown in FIG. 4 (c) is that the large-diameter side peripheral edge of the closure main body (31) formed in an umbrella shape is located at appropriate intervals in the circumferential direction and a part thereof is directed downward in the radial direction. It is formed by bending and deforming into a winglet (32). In this way, when the large-diameter side peripheral edge of the closure body (31) is partially folded down to form the wing piece (32), the gas flow acts on the wing piece (32) to further close the closure piece.
A rotational component is generated in (21), the fluctuation of the gas flow during opening / closing transition of the closure (21) is reduced, and flame stability is increased.

5 and 6 show another embodiment of the present invention,
In this embodiment, the upper wall of the lower wall (8) of the disc burner (6) is
A cylindrical partition wall (16) is projected upward from a position corresponding to the annular protrusion (11) in (9), and communication ports (20) are formed in the peripheral wall of the partition wall (16) at appropriate intervals in the circumferential direction. In addition, the closure (21) is arranged in the inner space (18) partitioned by the partition wall (16). This closure (21) is a partition wall
It is formed of a cylindrical lid body having a cylindrical leg portion (33) that is lightly contacted with the inner peripheral surface of (16), and its ceiling surface (34) is a disc burner.
It is formed in a shape along the inner surface (lower surface) of the upper wall (9). Then, the partition wall (16) is attached to the tubular leg (33) of the closure (21).
A gas outlet window (35) is formed corresponding to the communication port (20).

The connecting pipe (36) is mounted inside the mixing pipe (5) of the burner unit (4) so as to be in slight contact with the mixing pipe (5), and the upper end of the connecting pipe (35) is closed. Ceiling surface (3) of tool (21)
It is connected and fixed to 4). Then, gas outlets (36) are formed at appropriate intervals in the circumferential direction in a portion of the connecting pipe (35) corresponding to the inner space (18) of the disc burner (6). Also,
An air intake hole (37) is formed in a horizontally elongated hole in the lower part of the connecting pipe (35) so as to correspond to the outside air introduction port (29) provided in the mixing pipe (5).

Further, a turning operation pin (38) is provided so as to project from the air intake hole (37) of the connecting pipe (35) to an upper portion, and the turning operation pin (38) is the mixing pipe (5). It penetrates through a horizontally long hole-shaped pin insertion hole (39) and is projected to the outside of the mixing pipe (5).

In the burner thus constructed, the rotation operation pin (39) is operated to insert the gas outlet window hole (35) formed in the tubular leg portion (33) of the closing tool (21) into the partition wall (16). ), The inner and outer spaces (18) and (19) in the disc burner (6) communicate with each other, and the gas comes out from the inner and outer flame outlets (13) and (15).
When the gas outlet window hole (35) formed in the tubular leg portion (33) of the closure (21) does not match the communication port (20) of the partition wall (16), the inside and outside of the disc burner (6) The spaces (18) and (19) are cut off so that the gas is ejected only from the inner flame mouth (13). In addition,
In this case, the inside of the mixing pipe (5) and the inside of the disc burner (6) have a slight negative pressure due to the flow velocity of the fuel gas ejected from the valve unit (3), so that the gas is discharged from each fitting portion to the outside. Since it does not leak out to the outside, but rather is in a state of sucking in the outside air, it is not necessary to dispose a sealing material serving as a rotation resistance in each fitting portion, and it is possible to smoothly rotate.

In each of the above embodiments, the X-shaped cooker support 22 is arranged on the upper surface of the disc burner 6, but the three cooker support 22 are equally spaced in the circumferential direction. Or 5 or more boiler / cooking tool supporters (22) may be arranged at equal intervals in the circumferential direction. Further, in the above-mentioned embodiment, the disc burner (6) is formed in a shape in which the annular mountain-like portion is formed in the portion near the outer peripheral edge of the upper surface wall (9), but the flame vents are arranged in multiple rows inside and outside. The interior space of the mushroom-shaped burner in which the upper wall (9) is formed by a flat plate may be divided into the inside and the outside by the dividing wall.

[0022]

According to the present invention, the upper wall of the burner portion is formed in a shape in which the annular mountain-like portion is located near the outer periphery,
Flame openings are formed on the outer inclined surface and the inner inclined surface of the annular mountain bent portion, respectively, and a partition wall is arranged at a location corresponding to the annular mountain bent portion in the internal space of the burner portion. The space is divided into the inside and outside, a communication port that communicates the inside and the outside is formed in this partition wall, a closure is arranged corresponding to this communication port, and the communication port is opened by the action of this closure, and both flames inside and outside It is configured so that it can be used by switching between a large thermal power state using the mouth and a small thermal power state in which the communication port is closed and only the inner flame port is used, so that both internal and external flame ports are used depending on the gas flow rate supplied. It can be used by selecting the condition that the inner flame mouth is used and that when the supply gas flow rate is narrowed, only the inner flame mouth formed on the inner inclined surface is used. Stable firepower and combustion without being directly affected It is possible to maintain the state.

[Brief description of drawings]

FIG. 1 is a central longitudinal sectional view of a gas burner showing an embodiment.

FIG. 2 is an enlarged sectional view of a main part of a modified example.

FIG. 3 is an enlarged cross-sectional view of a main part of a different modified example.

FIG. 4 is a perspective view showing a modified example of the closing tool.

FIG. 5 is a central longitudinal sectional view of a gas burner according to another embodiment.

6 is an exploded perspective view of essential parts of the gas burner shown in FIG.

[Explanation of symbols]

2 ... Gas cartridge, 3 ... Valve unit, 4 ... Burner unit, 5 ... Mixing tube, 6 ... Disc burner section, 7 ... Gotoku, 11 ... Bend-like section, 12 ... Outside inclined surface, 13 ... Outside flame port, 14 ... inner inclined surface, 15 ... inner flame mouth, 16 ... partition wall, 17 ...
Connection wall part, 19 ... Outer space, 20 ... Communication port, 21 ... Closure tool,
35 ... Gas outlet window.

Claims (4)

[Claims] 1. A valve unit (3) removably connected to a gas cartridge (2) containing liquefied fuel gas, and a mushroom-shaped burner unit (4) extending upward from the valve unit (3). The burner unit (4) is continuously fed from the disc-shaped burner section (6), Gotoku (7) radially protruding in at least three directions on the upper surface of the burner section (6), and the lower surface of the burner section (6). In the liquefied gas container direct connection type burner configured with the mixed pipe (5), the burner column (6) is formed with a plurality of flame port lines concentrically on the upper wall (9) of the burner unit (6). Air-fuel mixture communication space formed in
A partition wall (16) is arranged in (10) to partition the internal space (10) into the inside and outside, and a communication port (20) that connects the internal and external spaces (18) and (19) to the partition wall (16) is formed. Corresponding to this communication port (20).
1) is placed, and by the action of this closure (21), the communication port (20) is opened to open the inner flame (15) and the outer space to the inner space (18).
A large fire power condition that uses both flame outlets (13) (15) of the outer flame outlet (13) that opens to (19) and a small fire condition that uses only the inner flame outlet (15) by closing the communication outlet (20). A liquefied gas container direct-connection type burner capable of changing a flame formation position, characterized in that it can be used by switching to a thermal power state. 2. The burner portion (6) has an upper wall formed in a shape in which an annular mountain fold portion (11) is located near the outer periphery, and an outer inclined surface ( 12) and inner slope
The liquefied gas container direct connection type burner according to claim 1, wherein the flame ports (13) and (15) are formed in the (14) and the flame port, respectively. 3. The partition wall (16) is formed into a stepped cylinder whose inner diameter in the lower half is larger than that in the upper half, and connects the lower half and the upper half of the partition wall (16). To the connecting wall (17)
(0) is vertically formed at appropriate intervals in the circumferential direction, and the partition wall (1
Donut-shaped closure in the outer space (19) section divided by 6)
The closure (21) is opened and closed with the pressure of the fuel gas supplied to the internal space of the burner unit (4), wherein (21) is arranged corresponding to the connecting wall portion (17). The liquefied gas container direct connection type burner according to claim 2, wherein the flame formation position can be changed. 4. The partition wall (16) is formed in a tubular shape, and
The closure (21) is also formed in a tubular shape, and the closure (21) is attached to the partition wall (1
Install the stopper (21) inside the (6) so that the outer peripheral surface of the stopper (21) is in contact with the inner peripheral surface of the partition wall (16) so that the stopper (21) can rotate relative to the partition wall (16), and the communication port (20) is surrounded by the peripheral wall of the partition wall (16). Direction is set at appropriate intervals and the closure (2
Gas lead-out window holes (35) are formed in the peripheral wall of (1) at appropriate intervals in the circumferential direction, and the closing member (21) is formed into the partition wall (16).
3. The state according to claim 1 or claim 2, wherein the gas outlet window hole (35) can be switched between a state in which the gas outlet window hole (35) coincides with the communication port (20) and a state in which the gas outlet window hole (35) deviates from the communication port forming position of the partition wall (16). Burner directly connected to a liquefied gas container that can change the flame formation position.