WO2013053107A1

WO2013053107A1 - Campfire stove

Info

Publication number: WO2013053107A1
Application number: PCT/CN2011/080667
Authority: WO
Inventors: 朱宏锋
Original assignee: Zhu Hongfeng
Priority date: 2011-10-11
Filing date: 2011-10-11
Publication date: 2013-04-18
Also published as: CN104081127A; US20140238282A1; CA2867564A1

Abstract

A campfire stove uses biomass particles as fuel, and comprises a body (1) capable of being placed on the ground. The body (1) comprises a combustion chamber (10) and an auxiliary equipment chamber (20). A combustor (30) is accommodated in the combustion chamber (10). The combustor (30) has a fuel frame plate (31), a side plate (32) extending upward from the fuel frame plate (31), a top plate (33) located above the side plate (32) and opposite the fuel frame plate (31), and a blast area (34) located below the fuel frame plate (31). The side plate (32) encircles a combustion area (35) above the fuel frame plate (31). A fuel delivery mechanism (40), electrical equipment (50) and a blast blower (51) are accommodated in the auxiliary equipment chamber (20). The campfire stove further comprises a flame portion (2) mounted on a top surface (13) of the body (1), the flame portion (2) being a flame rising space encircled by heat resisting glass.

Description

a campfire

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a bonfire furnace, and more particularly to a safe, easy-to-control bonfire generating device using biofuels.

Background technique

The bonfire is an ancient tradition of human beings and is loved by people in many countries. So far, the way to set up a bonfire is basically to put wood, coal, charcoal on the ground or in a container and then ignite. This traditional bonfire discharge method brings the following major problems. First, security issues. The sparks or flames produced by the burning dance with the wind, and it is easy to ignite other objects or burn people or other animals. Especially when natural wood or coal produces a deflagration in combustion, the situation is even more dangerous. Second, the flame control problem. Ignition and flameout in this type of bonfire discharge often take a long time. Wood and coal are not easily ignited by ordinary ignition devices such as lighters, igniters, etc., and flameouts can only be used in the form of water quenching or natural burning. Water quenching requires a sufficient amount of water to be prepared, and natural burning often requires personnel to wait. Either way, the efficiency of controlling the flame is low. In addition, since the flame is completely affected by the natural wind, the bonfire cannot be discharged at all when the wind is large, especially when there is a large gust. Third, environmental impact issues. Conventional discharge methods generate smoke over a long period of time from the start of combustion to full combustion, which has a negative impact on the health and environment of the surrounding people. The ash, wreckage, and smudges left on the ground barbecue after burning are also very difficult to remove, especially in the case of extinguishing bonfires with water. Fourth, the problem of low flame height. The traditional bonfire flames are limited in height and cannot form a spectacular sight of a blazing flame. Fifth, it is inconvenient to move.

technical problem

The main technical problem to be solved by the present invention is to provide a bonfire furnace which does not generate Mars flying out of the furnace body, and the flame does not dance with the wind in the height range of the person, which can bring great safety to the bonfire. .

Another technical problem to be solved by the present invention is to provide a simmering furnace which can only ignite or completely extinguish the igniting or extinguishing in a short period of time by the user pushing the button.

Another technical problem to be solved by the present invention is to provide a simmering furnace which can be used normally even when the wind is continuous or the gust wind is large.

Another technical problem to be solved by the present invention is to provide a simmering furnace which has a small amount of soot and ash, and which does not leave a stain which is difficult to remove on the ground after burning.

Another technical problem to be solved by the present invention is to provide a bonfire furnace capable of forming a flame exceeding the height of a person and capable of forming a spectacular bonfire flame scene.

Another technical problem to be solved by the present invention is to provide a bonfire furnace which is easy to move, that is, it is convenient to move within a short distance by a person to move, and it is also convenient to use a vehicle for long-distance movement.

Technical solution

In order to solve the above technical problems, the present invention provides a bonfire furnace using biomass fuel particles and including A body that can be placed on the ground, the body includes a combustion box and an auxiliary equipment box. The combustion box includes a bottom surface that can be laid flat on the ground, a side that extends upward along the periphery of the bottom surface, a top surface that is connected to the upper edge of the side surface and opposite the bottom surface, and a switchable door is provided on the side. There is a burner in the combustion chamber. The burner has a fuel rack plate, a side panel extending upwardly along the periphery of the fuel rack plate, a top plate above the side plate and opposite the fuel rack plate, a blast zone located below the fuel shelf plate, and a side panel at a combustion zone enclosed above the fuel shelf. A ventilation hole is formed on one side of the auxiliary equipment box on the blast zone, and a front opening is formed on the opposite side of the air supply hole. There are several ventilation holes on the fuel rack. A flame tube leading to the combustion zone is fixed above the combustion zone on the top plate, and a plurality of air inlet holes are opened in the periphery of the flame cylinder. The auxiliary equipment box houses a fuel delivery mechanism and electrical equipment. The fuel delivery mechanism includes a hopper, a delivery barrel having one end communicating with the outlet below the hopper and the other end extending into the combustion zone, and a rotatable fuel auger rod accommodated in the delivery cylinder. The electrical equipment includes a blower that communicates with the air supply aperture, a feed motor that drives the fuel auger, a power supply, and a power switch. A flame portion is also mounted above the top surface of the body, and the flame portion is a flame rising space formed by the high temperature resistant glass surrounding the flame tube.

Beneficial effect

The beneficial effects of the present invention are first, since the combustion process is mainly completed in the burner, and the blast-type combustion can greatly increase the sufficiency of combustion, and Mars composed of tiny fuel particles is not easily separated from the burner. Then, the flame is splashed to the outside through the longer flame portion; at the same time, the flame jumps in the flame portion and is not easily affected by the wind, so the safety of the natural bonfire is greatly improved. Second, when the user activates the oven, the high temperature ignition rod and blower can quickly burn the fuel to produce the desired flame; and after the user closes the furnace, the blower can continue to work for a period of time, so that the combustion chamber The fuel can burn out quickly. This greatly increases the efficiency of the bonfire generation and extinction. Third, biomass fuel pellets are used in the furnace. Biomass fuel itself is more flammable, less smog, and less ash than large-density wood and coal. Granular biomass fuels further reduce ignition time, smoke and ash emissions, especially during initial ignition and extinction. Fourth, the ash in the furnace is concentrated in the burner, which is easy to clean by opening the door; the combustion in the furnace is also concentrated in the burner, and no hard-to-clear smudges are formed on the ground. Fifth, the presence of the air inlet hole on the flame tube allows the outside air to enter and flow at a high speed in the flame portion, causing a flame that is much higher than the natural burning bonfire height to form a spectacular bonfire scene. Sixth, the stove is easy to move compared to the traditional campfire. It is possible to select a more suitable burning location by personnel movement within a short distance, and also to move long distances by means of vehicles.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a preferred embodiment of a simmering furnace of the present invention when ignited.

Figure 2 is a schematic exploded perspective view of the preferred embodiment.

Figure 3 is a side elevational view of the preferred embodiment.

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 5 is a perspective view of the portion of the fuel rack plate in the preferred embodiment.

Figure 6 is a circuit diagram of a portion of an electrical device of the preferred embodiment.

Fig. 7 is a perspective view showing the second embodiment of the present invention, when the bonfire is ignited.

Figure 8 is a schematic exploded perspective view of the second embodiment.

Figure 9 is a partially cutaway perspective view showing a portion of the side plate of the burner in the second embodiment.

Figure 10 is a side elevational view of the second embodiment.

Figure 11 is a cross-sectional view taken along line B-B of Figure 9.

Figure 12 is a perspective view showing a third embodiment of the furnace of the present invention.

Figure 13 is a partial cross-sectional plan view showing a portion of a glass portion of a flame portion of a third embodiment.

Figure 14 is a perspective view of the glass sheet holder of the third embodiment.

Figure 15 is a partial cross-sectional plan view showing a portion of a flame portion glass piece of a fourth embodiment. as well as,

Figure 16 is a partial cross-sectional plan view showing a portion of a flame portion glass piece of a fifth embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

A preferred embodiment of a simmering furnace of the present invention is shown in FIG. The oven includes a body that can be placed on the ground 1 , the body 1 Includes a combustion chamber 10 and an auxiliary equipment box 20 .

Referring to Figures 2, 3, 4, the combustion box 10 includes a bottom surface 11 that can be laid flat on the ground, one along the bottom surface 11 A side surface 12 extending upwardly from the periphery, a top surface 13 connected to the upper edge of the side surface 12 and opposite to the bottom surface 11. A switchable door 121 is opened on the side 12.

The combustion chamber 10 houses a burner 30 having a fuel rack 31 and a fuel rack 31 A side panel 32 extending upwardly from the periphery, a top panel 33 above the side panel 32 and opposite the fuel rack panel 31, and a blast zone 34 located below the fuel rack panel 31. Side panel 32 A combustion zone 35 is enclosed above the fuel shelf plate 31. On the blast zone 34, a ventilation hole 341 is formed on one side of the auxiliary equipment box 20, and a front opening is formed on the opposite side of the air supply opening 341. 342. The fuel rack plate 31 is provided with a plurality of ventilation holes 311, and an ignition rod window 312 may be opened, and an ignition rod 53 may be installed in the air blowing area 34 and passed through the ignition rod window. 312 exposed to the burning zone 35 . A flame tube 37 leading to the combustion zone 35 is fixed above the upper combustion zone 35 of the top plate 33. Several air inlet holes are opened in the periphery of the flame tube 37. . In the present embodiment, a plurality of air inlet holes 371 are arranged in a circle, and a total of three such air inlet holes 371 are provided.

The auxiliary equipment box 20 houses a fuel delivery mechanism 40 and electrical equipment 50. The fuel delivery mechanism 40 includes a hopper 41 A feed cylinder 42 having one end connected to the outlet below the hopper 41 and extending into the combustion zone 35 at the other end, and a rotatable fuel auger rod 43 accommodated in the feed cylinder 42. Electrical Equipment The circuit diagram of 50 is shown in Fig. 6, and includes a blower that communicates with the air supply hole 341 to supply air to the blast zone 34 in the burner 30 through the air supply hole 341. A feed motor 52 that drives the fuel auger rod 43 , an ignition rod 53 , a power source 54 , a power switch 55 , and a power indicator light 56 . Power supply 54 can be AC or DC power 541. It is also possible to connect the battery 542 as an auxiliary power source on the AC/DC power source 541. Both AC and DC power supplies 541 and battery 542 can be powered separately. Power switch 55 Mounted on the auxiliary equipment box 20, it can control the power supply of the entire circuit. The power indicator light 56 is also mounted near the power switch 55 on the auxiliary equipment box 20 to indicate the power supply status.

At the side plate 32 of the burner 30 and the side of the combustion box 10 12 There is a thermal insulation layer 16 made of fireproof and heat resistant materials such as asbestos, refractory bricks and the like.

Referring to Figures 1, 2, 3, 4, the furnace of the present invention further includes a flame portion mounted on the top surface 13 of the body 1. 2 . The flame portion 2 is a flame rising space formed by the high temperature resistant glass surrounding the flame tube 37. In the preferred embodiment, the flame portion 2 includes a top surface 13 mounted around the flame tube 37 glass cylinder 201. A glass inner cylinder 202 having a diameter substantially the same as that of the flame cylinder 37 of 10-40 cm can also be placed in the glass cylinder 201.

Fuel 70 is a biomass fuel and is a small particle that is crushed and pressed from straw, wood chips, and crop straw.

In use, the user can first place the bonfire furnace of the present invention on the ground at the desired location and then pour the fuel 70 into the hopper 41. When the user presses the power switch 55, the power indicator light 56 illuminates, indicating that the power is turned on, and the stove is started to work. At this time, the feed motor 52 rotates, and the fuel auger rod 43 is driven to feed the fuel 70 into the burner 30, and the fuel 70 falls by gravity on the fuel rack 31. At the same time, the energized ignition rod 53 becomes hot, and the fuel 70 in the combustion zone 35 on the fuel rack 31 is ignited through the ignition rod window 312. Also at the same time, the blower 51 begins to blow air into the blast zone 34, and the wind enters the combustion zone 35 through the venting apertures 311 formed in the fuel shelf plate 31 to provide the required oxygen for combustion of the fuel 70. When the fuel 70 is burned to a certain extent, a high concentration of methane gas is generated, which rapidly flows through the flame cylinder 37 by the air flow generated by the blower 51. At the same time, due to the temperature difference between the upper portion and the lower portion of the glass cylinder 201, the air outside the flame tube 37 flows into the inside of the flame tube 37 through the air inlet hole 371, and flows upward rapidly in the flame rising space of the flame portion 2. At this time, the high-temperature and high-concentration methane gas starts to fully burn with oxygen, resulting in a blazing flame. The flame is elongated by the airflow generated by the upper and lower temperature differences of the flame portion 2, and a high blazing flame is formed in the entire flame portion 2. Figure 1 shows the state of bonfire combustion. After the fuel 70 itself can continue to burn, the circuit controls the ignition rod 53 to be powered off, saving electrical energy.

When it is necessary to stop the combustion, the user can turn off the power switch 55, the power indicator light 56 is turned off, the feed motor 52 stops rotating, and the blower 51 stops. Without the new fuel 70 being supplied to the combustion, the fuel in the combustion zone 35 will burn out quickly, and the user can open the tank door 121 and clean the ash in the combustion zone 35 from the front opening 342 of the burner 30. The edge portion of the fuel rack plate 31 may be inclined upward at an angle to form a low ground 313 in the middle. Lowland 313 can gather fuel 70 In order to avoid excessive combustion of the edge fuel, the black smoke is not sufficiently generated.

The small granular biofuel 70 is easier to ignite than the bulky wood and coal, coupled with the high temperature hot ignition rod 53 and sufficient oxygen, the furnace of the present invention can be very short A spectacular bonfire is formed during the time. Also, since the biofuel 70 is easily ignited, the present invention can also ignite with an ignition material such as ignited paper, paper impregnated with alcohol or gasoline, without using the ignition rod 53. In this case, the ignition rod 53 in the circuit can be omitted, and the ignition rod window 312 may not be provided on the fuel shelf plate 31. In the case where only the glass cylinder 201 is present without the glass inner cylinder 202, the portion of the bottom of the glass cylinder 201 near the flame cylinder 37 forms a stagnant zone. The air flow in the stagnation zone is slowly burned insufficiently, so that black smoke is formed and black scale composed of under-burned micro-carbon particles is formed in the glass cylinder 201 here, which affects the appearance of the bonfire. The glass inner cylinder 202 having substantially the same diameter as the flame tube 37 can eliminate the stagnant zone, form a fast flowing flame, and is less prone to black scale. Even if a small amount of black scale is occasionally produced, the fast-flowing flame can be fully burned out immediately, so that the black scale quickly disappears. The transparent glass inner cylinder 202 also does not affect the viewing of the flame.

A second embodiment of a simmering furnace of the present invention is shown in Figs. 7-11. In this embodiment, the upper edge of the side wall 32 and the top plate 33 Connected, the feed cylinder 42 extends into the combustion zone 35 through an opening 321 formed in the side of the auxiliary equipment box 20 on the side wall 32.

In addition to the glass cylinder 201, the flame portion 2 can also be made of three or more identical glass sheets 203. Enclosed, each of the glass sheets 203 can be closely joined or left with a slit 204 of a certain width. Each piece of glass can be either a flat plate or a certain arc. Figure 12 A third embodiment of the present invention is shown. The body 1 portion in this embodiment is the same as the above-described preferred embodiment, except that the flame portion 2 is a regular pentagon composed of five identical glass sheets 203. Figure 13 is a partial plan view showing a portion of the flame portion 2 of the embodiment shown in Fig. 12. Each of the glass sheets 203 is not tightly joined to the adjacent two glass sheets 203 but leaves a slit of a certain width 204 . As shown in Fig. 14, a glass holder 205 may be added to the free end of the glass piece 203 to prevent the glass piece 203 from being broken or poured. Glass holder 205 includes 5 The frames 206, which are wrapped at the free end of each of the glass sheets 203, are made of refractory materials such as metal or stone, and are hinged to each other by a hinge 207.

In the fourth embodiment shown in Fig. 15, the flame portion 2 is a regular hexagon composed of six identical glass sheets 203, each of which is in the form of a glass piece 203. 203 is not tightly joined to the adjacent two glass sheets 203 but leaves a slit 204 of a certain width. The flame portion 2 of the fifth embodiment shown in Fig. 16 is composed of 3 The same glass piece 203 having a certain curvature is formed, and each piece of glass 203 is not tightly joined to the adjacent two pieces of glass 203 but leaves a slit 204 of a certain width.

Claims

A campfire furnace characterized by using biomass fuel (70) particles and comprising a body (1) that can be placed on the ground, the body (1) ) includes a combustion box (10) and an auxiliary equipment box (20);

The combustion box (10) includes a bottom surface (11) that can be laid flat on the ground, and a side that extends upward along the periphery of the bottom surface (11) (12) a top surface (13) connected to the upper edge of the side (12) and opposite the bottom surface (11), and a switchable door (121) is provided on the side (12) );

The combustion box (10) houses a burner (30), and the burner (30) has a fuel rack plate (31) and a fuel rack plate (31). a side panel (32) extending upwardly from the periphery, a top plate (33) above the side plate (32) opposite the fuel shelf plate (31), and a blast zone located below the fuel shelf plate (31) (34) a combustion zone (35) surrounded by a side panel (32) above the fuel rack plate (31); a blower hole is formed on one side of the auxiliary equipment box (20) on the blast zone (34) (341) The opposite side of the air supply hole (341) is formed with a front opening (342); the fuel frame plate (31) is provided with a plurality of ventilation holes (311); and the top plate (33) is provided with a combustion area (35) Above is fixed a flame tube (37) leading to the combustion zone (35), and a plurality of air inlet holes (371) are opened on the periphery of the flame tube (37);

The auxiliary equipment box (20) houses a fuel delivery mechanism (40) and electrical equipment (50);

The fuel delivery mechanism (40) includes a hopper (41), one end of which is in communication with the outlet below the hopper (41) and the other end of which extends into the combustion zone (35) a feeding cylinder (42), and a rotatable fuel auger rod (43) accommodated in the feeding cylinder (42);

The electrical equipment (50) includes a blower (51) connected to the air supply hole (341), and a driving fuel auger rod (43) The feed motor (52), the power supply (54), and a power switch (55);

a flame portion (2) mounted on the top surface (13) of the body (1), the flame portion (2) being a flame tube surrounded by a high temperature resistant glass (37) ) formed a flame rising space.

2. A campfire furnace according to claim 1, characterized in that the flame portion (2) is a glass cylinder (201).

3. The campfire furnace according to claim 2, wherein the glass cylinder (201) is further provided with a diameter and a flame tube (37). ) The same glass inner tube (202) with a height of 10-40 cm.

The campfire furnace according to claim 1, wherein the flame portion (2) is made of three or more pieces of the same glass (203) ) enclosed.

The campfire furnace according to claim 4, wherein a gap of a certain width is left between each of the glass sheets (203) (204) ).

6. The campfire furnace according to claim 1, wherein said fuel rack plate (31) is further provided with an ignition rod window (312), electrical equipment (50) ) further comprising an ignition rod (53) installed in the blast zone (34) and exposed to the combustion zone (35) through the ignition rod window (312), powered by the power source (54) (53) ).

The campfire furnace according to claim 1, wherein an edge portion of said fuel rack plate (31) is inclined upward at an angle to form a low ground in the middle portion ( 313).