WO2017050269A1 - Portable combustion furnace - Google Patents

Abstract

A portable combustion furnace, comprising a furnace body (100), a combustion furnace support device (400), a combustion furnace isolation housing (200) and a furnace head assembly (300), wherein the furnace body (100) comprises an upper cover (102) and a furnace main body (101) provided with a combustion cavity; a lower side wall of the furnace main body (101) is provided with first stage air guide holes (107, 108) through which air is pumped in; a second stage air guide hole (106) is provided on a side wall of the upper cover; and the first stage air guide holes (107, 108) and the second stage air guide hole (106) are all through holes. When combustion occurs in the combustion furnace, there is sufficient oxygen at the bottom and the mouth of the furnace, and the middle part of the furnace body is in a relative oxygen lack environment, such that staged fuel combustion is realized, and the utilization rate of heat energy is greatly improved.

Description

Portable burner Technical field

This invention relates to the field of combustion furnaces and, in particular, to portable combustion furnaces.

Background technique

At the moment, outdoor winds are becoming more and more popular. Mountain climbing, adventure, and play are often indispensable. Wild picnics increase the fun of outdoor activities. People eliminate barriers and enhance their feelings in the process of preparing meals.

Cooking usually requires high temperature heating, and the high temperature that is easily available outdoors is the flame. In the process of wild donkeys, you can make a simple cooktop by digging holes or stacking bricks, and burn the heat by igniting branches or other combustibles. In a windy environment, the flame is also easily blown out by the wind or triggers a mountain fire.

In this context, portable combustion furnaces have appeared on the market. The portable burner is small and easy to carry, eliminating the need to make a cooktop.

However, the inventors found in the research that the portable combustion furnace in the prior art has insufficient heat power and low heat utilization efficiency due to its small size, and it takes time and effort to use the existing portable combustion furnace for heating; and alcohol and liquefied gas are used. Although flammable dangerous goods are used as fuel, although they have strong firepower, they are very unsafe and not environmentally friendly during the carrying process.

Summary of the invention

It is an object of the present invention to provide a combustion furnace for improving the heating efficiency of existing combustion furnaces.

The present invention is implemented as follows:

A portable combustion furnace comprising a burner furnace body, a burner support device, a combustion furnace isolation shell and a burner assembly;

The burner furnace body comprises a top cover of a combustion furnace and a furnace body with a combustion cavity, the upper cover of the combustion furnace is disposed above the body of the furnace, the opening of the combustion cavity faces upward, the combustion a middle portion of the upper cover of the furnace is provided with a passage communicating with the combustion cavity, and a side wall of the furnace body body is divided into an upper side wall and a lower side wall in a vertical direction, and the lower side wall of the furnace body is disposed a first-stage air inlet hole for introducing air, a side wall of the upper cover of the combustion furnace is provided with a secondary air inlet hole, and the first-stage air inlet hole and the second-level air induction hole are both through holes;

The burner support device includes a bottom cover and at least three support members, the bottom cover is disposed at a bottom of the combustion furnace and connected to the combustion furnace isolation shell, and the two ends of the support member respectively correspond to the ground and the bottom cover Bottom connection;

The combustion furnace isolation casing is cylindrical and is used for enclosing the combustion furnace body, and a gap is disposed between the combustion furnace insulation shell and the combustion furnace body;

The burner assembly includes a connection assembly, a fire head cover and a pan holder, the fire head cover being coupled to a top of the burner insulation casing, the pan frame being at least three and disposed on the fire head cover by the connection assembly Above.

Further, further comprising a burner support device comprising a bottom cover and at least three support members, the bottom cover being disposed at a bottom of the combustion furnace and connected to the combustion furnace isolation shell, two of the support members The ends are respectively connected to the ground and the bottom surface of the bottom cover;

The furnace body further includes an insulation tube and a heat insulation cover, a top wall of the heat insulation tube is connected to the upper cover of the furnace, and a bottom of the heat insulation tube is connected to the heat insulation cover, The heat insulating cover is disposed under the body of the furnace and is provided with a gap between the body and the body of the furnace, and the heat insulating cover and the body of the furnace are connected by a heat insulating bracket, and the heat insulating tube is An air intake cavity is formed between the body of the furnace body, and the heat insulation cover is provided with an air inlet opening for placing an air intake fan, the air intake fan brings air into the air intake cavity, and passes through the The primary bleed holes and/or the secondary bleed holes enter the combustion cavity.

Further, further comprising a combustion furnace air distribution system, including an air intake fan and a diverting table, a top of the diverting table is connected to a bottom of the furnace body, and the diverting table is disposed above the air intake fan a gap is disposed between the diverter table and the air intake fan, the air intake fan is disposed at an air inlet of a bottom of the combustion furnace, and the air intake fan is configured to transport a gas into the air intake cavity, A diverter is used to divert the gas sucked by the intake fan.

Further, the branching table is in the shape of a truncated cone and the outer diameter of the diverting table is gradually increased from bottom to top, and the air intake fan includes a rotating sleeve, a fan blade and a fan frame, and the fan blade and the rotating sleeve a fixed connection, the rotating sleeve is rotatably disposed in the fan frame, the plurality of blades are rotationally symmetric about a rotation axis of the rotating sleeve, and the rotating sleeve is disposed below the diverter The fan blade is located below the side wall of the diverter table, and the air sucked by the air intake fan enters the air intake cavity along the side wall of the diverter table.

Further, the primary air vent includes a first air vent, the airflow entering the combustion cavity through the first air vent is annular or spiral, and the lower sidewall is provided with at least one a channel recessed inside the combustion cavity, the channel being vertically disposed, the first air vent hole being disposed on a sidewall of the channel, and a shaft line of the first air vent and the furnace body The center line of the body is different from the surface, and the channel has a cross-sectional shape of a "V" shape or a circular arc shape.

Further, the burner insulation casing comprises a side wall body, the side wall body is cylindrical and is used for placing a furnace body of the combustion furnace, the side wall body comprises an arc portion, two extensions and a plane a gap is formed between the curved portion and the furnace body of the combustion furnace, and two side edges of the flat portion are connected to the two side edges of the curved portion through the extension portion, the extension The portion is a flat plate, and the extension portion and the curved portion smoothly transition.

Further, the curved portion and the extension portion are each provided with at least one outwardly protruding portion An arcuate channel disposed along a horizontal plane.

Further, the curved portion and the extension portion are each provided with a second arcuate channel recessed toward the furnace body of the combustion furnace, and the bottom of the inner wall of the second arcuate channel is pressed against the combustion furnace The top wall of the furnace body.

Further, the pan holder is in the form of a strip, and the two ends of the pan holder are respectively a fixed end and a free end, and the fixed end is rotatably connected to the fire cover through the connecting assembly, and the fixed end is located at the Between the free end and the priming passage or between the fixed end and the pylon passage, the pan holder includes a first working surface respectively located on two opposite side walls of the pan holder and The second working surface, the first working surface and the second working surface alternately become the top wall of the pan holder during the rotation of the pan holder and is in contact with the object to be heated.

Further, the outer edge of the fire head cover is provided with a flange, and the flange is used for connecting the burner insulation shell.

The utility model has the beneficial effects that: the combustion furnace body passes through the first-stage air inlet hole provided on the lower side wall of the furnace body body and the secondary air-inlet hole provided on the upper cover of the combustion furnace, so that when the combustion occurs in the combustion furnace, the furnace bottom and The oxygen at the mouth of the furnace is more sufficient, and the middle part of the furnace is in a relatively oxygen-deficient environment. Therefore, the fuel is burned in sections in the combustion cavity, and the combustion is more sufficient, which can greatly improve the utilization of heat energy, and the working system is combined with the air distribution system. Continuously and steadily distribute the heated high-temperature air to the combustion furnace, so that the combustion is efficiently mixed with oxygen, and the heat release is sufficient.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings show only certain embodiments of the present invention, and therefore It should be seen as a limitation on the scope, and those skilled in the art can obtain other related drawings according to these drawings without any creative work.

1 is a schematic cross-sectional view of a combustion furnace according to an embodiment of the present invention;

Figure 2 is a schematic view showing the structure of the burner body of Figure 1;

Figure 3 is a plan view of the body of the furnace body;

Figure 4 is a schematic view of the deformation of Figure 3;

Figure 5 is a schematic view showing the assembly of the combustion furnace isolation shell of Figure 1;

Figure 6 is a schematic structural view of the plane portion of Figure 5;

Figure 7 is a plan view of the side wall body of Figure 5;

Figure 8 is a schematic structural view of the pan holder in the burner assembly of Figure 1;

Figure 9 is a plan view of the burner assembly of Figure 1;

10 is a schematic view showing the assembly of a furnace air distribution system according to Embodiment 1 of the present invention;

Figure 11 is a schematic structural view of the intake fan of Figure 10;

Figure 12 is a schematic view of the assembly of Figure 11;

Figure 13 is a front elevational view of the support member of the burner support device of Figure 1;

Figure 14 is a left side view of Figure 13;

Figure 15 is a plan view of Figure 13;

Figure 16 is a schematic view of the assembly of Figure 13.

Summary of the reference signs:

Burning furnace body 100; furnace body 101; combustion furnace upper cover 102; blanking table 103; heat shield 104; channel 105; secondary air vent 106; first air vent 107; second air vent 108; Thermal bracket 109; heat insulating cover 110; combustion furnace isolation housing 200; curved portion 201; extension portion 202; planar portion 203; second curved channel 204; first curved channel 205; "U" shaped notch 206 ; inverted 207; burner assembly 300; first working surface 301; second working surface 302; third working surface 303; bearing surface 304; bonding surface 305; fire hood 306; pot holder 307; connecting assembly 308; Channel 309; fire guide 310; burner support device 400; leg 401; support plate 402; stop block 403; first through hole 404; strip hole 405; ear plate 406; second through hole 407; Base 409; combustion furnace air distribution system 500; intake fan 501; diverter 502; intake cavity 503; rotating sleeve 504; fan blade 505; fan frame 506; power line 507; intake fan fixed plate 508; Sheet 509; threading groove 510.

detailed description

The portable combustion furnace in the prior art has a small volume, provides insufficient firepower, and has low heat utilization efficiency. It takes time and effort to use the existing portable combustion furnace for heating, and uses flammable dangerous goods such as alcohol and liquefied gas as fuel, although firepower Strong, but very unsafe and not environmentally friendly during the carrying process.

In view of the above, the present invention provides a combustion furnace for a furnace body with a two-stage bleed hole, the burner furnace body being provided by a primary vent hole and a burner upper cover provided on a lower side wall of the furnace body The secondary venting holes make the oxygen in the furnace bottom and the furnace mouth more abundant when the combustion occurs in the combustion furnace, and the middle part of the furnace body is in a relatively oxygen-deficient environment, so the fuel is burned in sections in the combustion cavity, and the combustion is more full.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the present invention, terms such as "installation," "connected," "connected," and "fixed" are to be understood broadly unless otherwise specifically defined and defined.

Referring to FIG. 1 to FIG. 16 , an embodiment of the present invention provides a portable combustion furnace including combustion. The furnace body 100, the combustion furnace insulation casing 200, the combustion furnace support device 400, the combustion furnace air distribution system 500, and the burner assembly 300.

The furnace body 100 includes a furnace body 101, a furnace upper cover 102, an insulated cylinder 104, and a heat insulating cover 110.

The furnace body 101 is disposed under the upper cover 102 of the combustion furnace. The top of the upper cover 102 of the furnace is a blanking table 103. The top wall of the heat shield 104 is connected to the blanking table 103 and surrounds the upper cover of the furnace from the side. 102 and the furnace body 101, the heat shield 104 forms an air intake cavity between the upper furnace cover 102 and the furnace body 101, and the bottom of the heat shield 104 is connected with the heat insulation cover 110, and the heat insulation cover 110 and the furnace body The bodies 101 are connected by a heat insulating bracket 109.

The side wall of the furnace body 101 is vertically divided into an upper side wall and a lower side wall, and the lower side wall is provided with a primary air vent.

The upper cover 102 of the burner is fixed above the body 101 of the furnace, and a central portion of the upper cover 102 of the burner is provided with a passage communicating with the combustion cavity for drawing out the flame. The combustion furnace upper cover 102 is provided with a secondary bleed hole 106 for conveying air to the combustion cavity.

The primary bleed hole includes a first bleed hole 107 and a second bleed hole 108, and the air introduced into the combustion cavity by the first bleed hole 107 flows in a ring shape or a spiral shape.

The primary air vent is at the bottom of the combustion cavity, and the secondary air vent 106 is at the top of the combustion cavity. When combustion occurs in the combustion furnace, the oxygen at the bottom of the furnace and the furnace mouth are more sufficient, and the middle of the furnace is in a relative position. An anoxic environment. The combustibles burn in the furnace, sink into the furnace, enter the air at the bottom, burn the combustibles, and dissipate heat. The combustible material is mainly subjected to the first-stage combustion at the bottom of the furnace body and the middle portion of the furnace body to generate a combustible gas such as carbon monoxide, and then burned again in the area of the upper cover 102 of the combustion furnace and fully mixed with the newly entered air. The multi-stage combustion enables the heated high-temperature oxygen to be fully mixed with the combustible gas in the combustion cavity to increase the heat release, thereby improving the firepower. Since the air intake area is small, the heat is emitted more slowly, which is more conducive to the temperature rising, so that the furnace body 101 is in a high temperature environment, and the incoming air is also converted into high temperature air. The high temperature environment causes the moisture contained in the combustibles to be quickly evaporated, so that the fuel such as branches and the like produces less black smoke.

In order to make the air entering the combustion cavity flow in a ring shape or a spiral shape, the center line of the first air inlet hole 107 should be different from the center line of the furnace body 101, and the movement of the air flow introduced by each of the first air holes 107 should be at the horizontal plane. The upper side is clockwise or counterclockwise in the same direction of rotation.

Regardless of whether the flow of air in the combustion cavity is annular or spiral, the surrounding air has a tendency to rise due to heat release from combustion. Therefore, the airflow in the combustion cavity in the working state makes a spirally rising flow.

The flame follows the airflow to make a rotary ascending motion, which is more fully mixed with the air; the flow of the spiral is less wasteful, and the heat loss is slower; the active path of the flame increases, the contact time with the heated object becomes longer, and the heat utilization is higher. The rotating flame has uniform firepower and high heat utilization efficiency.

Referring to FIG. 2, the sidewall of the furnace body 101 is provided with four channels 105 recessed toward the inside of the combustion cavity. The first air inlet 107 is disposed on the side wall of the channel 105. The cross section of the channel 105 is "V" shape.

The hole in the inwardly concave channel 105 can easily realize the requirement that the center line of the first air inlet hole 107 is different from the center line of the furnace body 101, so that the air flow introduced by the first air inlet hole 107 is in the combustion cavity. Flows in a ring or spiral.

In order to ensure the uniformity of the wind direction, the first embodiment of the present invention provides four channels 105 having a cross section of "V" shape. Each of the channels 105 includes a first side wall and a second side wall, the four first side walls being rotationally symmetric about a centerline of the combustion cavity, and the four second side walls being also rotationally symmetric about a centerline of the combustion cavity.

The channel 105 is disposed vertically. The first air venting holes 107 are all disposed on the four first side walls or all of the four second side walls.

Referring to Figure 3, the number and shape of the channels 105 can also be varied, such as three curved channels 105. In addition, the channels can also be operated in a non-vertical setting.

After a large amount of combustibles are added to the combustion cavity, it is not easy to continue to add inward due to the large amount of filling. The shape of the "V" shaped channel 105 can open the fuel and form a gap near the side wall of the channel 105. Through the gap, the user can continue to add granular fuel to the combustion cavity, and the gap can also make all The fuel is well mixed with the high temperature oxygen entering the furnace. At the same time, the recessed channels facilitate processing of the first bleed holes 107 to introduce a flow of air that spirals within the combustion cavity.

In order to ensure that the effect of the spiral wind is more obvious, the number of the channels 105 may be appropriately increased, the number of the first bleed holes 107 may be increased, or the angle of the first bleed holes 107 may be adjusted.

Further, the first bleed hole 107 can also be fabricated by increasing the thickness of the side wall of the furnace body and by drilling the hole on the side wall. The wind that is guided through the first bleed hole 107 by a sufficient thickness is not directly blown toward the center of the furnace body, but enters the furnace in a circular or spiral path.

Referring to FIG. 2, the bottom side wall of the furnace body 101 provided in this embodiment is provided with a second air vent 108, the second air vent 108 is used to increase the air intake, and the center line of the second air vent 108 can be burned. The centerline of the cavity is coplanar and may also coincide with the direction of the first plenum 107.

The burner upper cover 102 is disposed at the top of the furnace body 101, and the shape of the burner upper cover 102 is a hollow truncated cone shape.

The inner diameter of the upper cover 102 of the burner gradually increases from top to bottom, and the cross-sectional area of the intermediate passage gradually increases from top to bottom.

The hollow structure of the burner upper cover 102 allows the flame of the combustion cavity to emerge from the intermediate passage of the burner upper cover 102.

In the case where the intake speed is constant, that is, when the speed at which the primary bleed hole and the secondary bleed hole 106 introduce air is constant, the amount of gas in the combustion cavity is constant. The cross section of the combustion cavity is larger than the combustion The top dimension of the intermediate passage of the furnace upper cover 102, the flow rate of air at the top of the intermediate passage of the upper cover 102 of the furnace is greater than the flow rate within the combustion cavity.

According to this feature, the upper and lower passages cause the flame to suddenly pick up at the top of the upper cover 102 of the burner, so that the flame can reach a large height, so that the flame can fully contact the item to be heated above the upper cover 102 of the furnace. .

The combustion furnace upper cover 102 is provided with a secondary venting hole 106. During operation, the oxygen content in the top portion of the combustion cavity is higher than that in the central portion of the combustion cavity.

The top of the burner upper cover 102 is a blanking table 103, and the middle portion of the blanking table 103 is hollowed out for the fire to emerge. The combustion cavity in the furnace body 101 and the central passage of the upper cover 102 of the furnace are penetrated.

The top wall of the blanking table 103 is funnel-shaped, and the top wall is gradually recessed downward from the surrounding hollowed-out area.

The funnel-shaped top wall allows the user to scatter the combustion material that should have been scattered on the top of the upper cover 102 of the furnace to fall into the combustion cavity along the funnel-type slope due to gravity. It is convenient for the user to add fuel to the combustion cavity.

The heat shield 104 surrounds the furnace body 101 and the burner upper cover 102 from the side. The top of the heat shield 104 is connected to the blanking table 103. The side wall of the heat shield 104 is separated from the furnace body 101 and the upper cover 102 of the furnace. The bottom of the heat insulating tube is connected to the heat insulating cover 110. The heat cover 110 is disposed under the furnace body 101 and is provided with a gap between the bottom of the furnace body and the bottom of the furnace body. The heat insulation cover 110 and the furnace body 101 are connected by a heat insulation bracket 109, and the middle portion of the heat insulation cover 110 is provided with a front. Air opening.

The side wall of the heat shield 104 is a fully enclosed structure, and the left gap between the heat shield 104 and the furnace body 101 is an air intake cavity, and the inlet of the air intake cavity is an air inlet opening at the bottom, and the air intake is empty. The outlet of the chamber is a primary vent and a secondary vent 106 disposed on the body 101 of the furnace.

In order to increase the air inlet speed of the intake cavity, an intake fan can be installed in the intake opening, and the intake fan can accelerate the injection of fresh air into the intake cavity, and the provided air pressure can ensure the combustion air. The flames in the cavity will not be dissipated from the venting holes, but will be concentrated by the objects to be heated that are discharged upward through the intermediate passage.

By adjusting the speed of the fan, it is possible to control the intake speed of the air combustion furnace, thereby controlling the internal firepower.

The heat shield 104 further prevents heat loss from the furnace body 101, and controls the heat released from the combustion of the fuel inside the heat shield 104, thereby greatly reducing heat loss. The temperature of the entire intake cavity is high, and the air entering the air intake cavity is quickly converted into a high temperature gas to make the combustion more complete.

The connection between the burner upper cover 102, the furnace body 101, and the heat shield 104 may be achieved by welding or integrally formed.

Referring to FIG. 5 to FIG. 7, the combustion furnace isolation shell includes a side wall body, and the side wall body includes a flat portion 203. The curved portion 201 and the two extensions 202.

Referring to FIGS. 5 and 7, both sides of the flat portion 203 and the curved portion 201 are connected by the extension portion 202, so that the side wall body encloses a cylindrical shape and surrounds the combustion furnace body.

A gap is maintained between the side wall body and the furnace body of the burner to prevent the heat of the furnace body from being transferred to the combustion furnace isolation shell, so as to keep the combustion furnace insulation shell at a lower temperature and avoid scalding the contact person.

The outer side of the side wall body is in direct contact with the outside control, and the vent hole can be started on the side wall body, so that the inside of the side wall body can also be in contact with the outside air, thereby further dissipating heat to the side wall body.

Referring to FIG. 5, the side wall body, particularly the curved portion 201 and the extension portion 202, may also be fabricated through a mesh plate. As a prior art plate, the mesh plate is provided with a uniform opening on the outer surface thereof, and the manual opening is no longer required, so that the inner and outer sides of the side wall body have air flowing at a lower cost.

The gap between the curved portion 201 and the furnace body of the burner is uniform in size. On the basis of reducing the heat transfer of the furnace body to the insulation shell, the total size of the curved portion 201 is also small, and the entire isolation casing is provided with a flat surface. In the case of the portion 203, the overall size is still controllable.

The extension portion 202 has a flat shape, and the connection between the extension portion 202 and the curved portion 201 is smooth, and the gap between the extension portion 202 and the burner furnace body is from the end near the curved portion 201 to the end near the flat portion 203. Gradually increase.

Since the gap between the both ends of the flat portion 203 and the extension portion 202 and the furnace body of the burner is the maximum gap between the entire isolation shell and the furnace body of the burner, the heat insulation effect of the flat portion 203 is good.

In the present embodiment, the extension portion 202 has a flat shape, and the flat portion 203 is also a flat plate or an arc plate. When the flat portion 203 is an arc plate, the curvature of the curved portion 201 should be smaller, and the diameter of the arc is more. Large enough to be placed on a flat surface without being turned over.

Referring to FIG. 5, the curved portion 201 and the extension portion 202 are each provided with a second arcuate channel 204 recessed toward the direction of the furnace body, and the bottom of the inner wall of the second arcuate channel 204 is pressed against the furnace body. The top, that is, the blanking table 103.

The bottom of the second curved channel 204 presses the blanking table at the top of the burner block to fix the relative position between the burner block and the burner block.

The bottom of the combustion furnace isolation shell is connected with the bottom cover of the combustion furnace, the bottom cover is relatively fixed between the combustion furnace body, and the second curved channel 204 cooperates with the bottom cover to prevent the combustion furnace isolation shell and the combustion furnace body Produce sliding up and down.

The shape of the curved portion 201, the extension portion 202 and the flat surface portion 203 are different. After the blanking table surface is in full contact with the combustion furnace isolation shell, the relative rotation between the combustion furnace body and the combustion furnace isolation shell cannot be performed, thereby fixing the combustion furnace. The location of the isolation shell.

Referring to Figures 5 and 6, the top of the side wall body is fixedly coupled to the fire head cover of the burner, and the top of the flat portion 203 is provided with a "U" shaped notch 206 for adding fuel to the furnace body.

The top of the side wall body is connected with the fire hood, and the fire hood is the support surface of the cooker's pan holder. The pot rack is placed at a higher position so that the heating pot is located in the outer flame portion of the flame, and the heating temperature is higher and the heating is more fast. Through the "U" shaped notch 206, not only can the flame size of the furnace body be observed in real time, but also there is enough space to add fuel to the interior of the furnace body, such as granular biomass fuel or dry wood leaves. Wait.

The bottom of the "U" shaped notch 206 is flush with or flush with the top surface of the blanking deck, providing maximum space for fuel addition and providing sufficient visibility.

Both the curved portion 201 and the extended portion 202 are provided with a first curved channel 205 protruding outwardly. The first curved channel 205 can improve the strength and rigidity of the curved portion 201 and the extended portion 202, so that the curved portion The 201 and the extension 202 can have a certain tension and are not easily deformed during use. The first curved channel 205 can also be recessed inward.

Referring to FIG. 7, a flange 207 is provided at the joint between the extension portion 202 and the flat portion 203.

A flange 207 is disposed at a joint between each of the two extension portions 202 and the plane portion 203, and the original two sharp connection angles are dispersed into four connection angles with larger angles, and the extension portion 202 and the plane portion 203 are alleviated. The transition between them avoids the sharp joint angle of the person causing a significant squeeze on the person.

Referring to Figures 1, 13, 14, 15, and 16, the furnace support device 400 includes a bottom cover and at least three supports.

The bottom cover is connected to the bottom of the burner insulation casing.

A third passage for ventilation is provided in the middle of the bottom cover.

The support member is disposed under the bottom cover and is rotatably coupled to the bottom cover, and the support member includes a leg 401 and a support plate 402.

The support member and the bottom cover are rotatable, and the support member is opened before the work, the support member is turned out, and the support member is gathered for storage after work, thereby reducing the occupation space of the combustion furnace.

The direction of rotation of the support member should be the direction toward the centerline of the bottom cover and the direction away from the centerline of the bottom cover.

For ease of description, the position of the support member in the working state will be described.

In this embodiment, the bottom cover is rotatably connected to the three support members, and the three support members are rotationally symmetric about the center line of the third passage.

The leg 401 is the main body of the support, and the leg 401 is elongated. One end of the leg 401 is a rotating end, and is provided with a rotating shaft 408, and is rotatably connected to the bottom cover through the rotating shaft 408, and is far away from the ground in the working state; the other end of the supporting leg 401 is a free end, and is connected to the supporting plate 402. Closer to the ground when in working condition.

When the support member is in the storage state, the leg 401 is folded toward the center line of the bottom cover, and the leg 401 The free end is near the center line of the bottom cover; when the support member is in operation, the leg 401 is folded away from the center line away from the bottom cover, and the free end of the leg 401 is at a maximum distance from the center line of the bottom cover. A strip hole 405 for reducing the weight is provided on the leg 401.

The top of the leg 401 is provided with a limit block 403. When the top wall of the limit block 403 comes into contact with the bottom of the burner, the support member is at the end of the stroke which is folded away from the center line of the bottom of the burner.

The stop block 403 is used to define the end of the stroke of the support when it is folded outward. In operation, the top wall of the stop block 403 is just in contact with the bottom cover of the burner so that the support member can continue to maintain the current position under load bearing conditions.

The stop block 403 acts only when the support member is folded outward and defines the maximum position at which the support member folds outward. The stop block 403 does not function when the support is folded inward.

The support plate 402 has a plate shape, and the support plate 402 is vertically disposed at the bottom of the leg 401. The support plate 402 and the legs 401 may be integrally formed or connected by welding. When the support member is in operation, the bottom surface of the support plate 402 is in contact with the ground.

The support plate 402 increases the contact area between the support device and the bottom surface, so that the support device provided by the embodiment can also play a better supporting role in the soft ground area.

The support plate 402 is provided with a first through hole 404 penetrating up and down, and the first through hole 404 can be used for piercing the fixing member.

The fixing member is inserted into the first through hole 404 from the top and inserted into the ground, so that the connection between the entire supporting system and the ground is more stable and reliable.

With the fixings, the support device can also be used in high wind conditions, which reduces the risk of rollover of the burner.

The connection between the support and the bottom cover is achieved by a set of ear plates 406. The number of the ear plates 406 is the same as the number of the support members. Each of the ear plates 406 includes two ear plates 406 arranged side by side. The ear plate 406 is provided with a second through hole 407 for inserting the rotating shaft 408. The leg 401 is rotatably supported on the ear plate 406.

The support member is connected to the bottom of the combustion furnace through the set of the ear plates 406. The two ends of the rotating shaft 408 are rotatably disposed in the second through hole 407 formed in the ear plate 406, thereby enabling the support member to rotate about the rotating shaft 408.

The ear plate 406 group can be directly fixed on the bottom surface of the bottom cover, and can also be realized by adding the base 409.

Referring to FIG. 16, two ear plates 406 of the ear plate 406 set are disposed on the same side of the base 409, and the ear plate 406 extends downward from the upper side of the bottom cover to the bottom of the bottom cover, and the bottom surface of the base 409 abuts against the top of the bottom cover. The two ear plates 406 support the rotating shaft 408.

In order to reduce the sway between the base 409 and the bottom cover, the base 409 and the bottom cover can be further fixed by bolts.

Referring to Figures 1, 8, and 9, the burner assembly 300 includes a pan holder 307, a fire cover 306, and a connection. Component 308.

The fire head cover 306 is disposed above the fire exit of the furnace body of the combustion furnace, and a fire passage 309 for extracting a flame in the furnace body of the burner is disposed at an intermediate position of the fire head cover 306.

The pan holder 307 is rotatably coupled to the fire cover 306 by a coupling assembly 308.

The pan holder 307 includes a first working surface 301 and a second working surface 302. Both working surfaces can be used to support the heating device. The first working surface 301 and the second working surface 302 are respectively opposite two on the pan 307. Side wall.

During the rotation of the pan holder 307, the first working surface 301 and the second working surface 302 alternately become the top wall of the pan holder 307. That is, when the starting point of the stroke and the end point of the stroke during the rotation of the pan holder 307, the first working surface 301 or the second working surface 302 is the top wall of the pan holder 307, and is in contact with the bottom of the pan to be heated.

The lengths of the first working surface 301 and the second working surface 302 are different, and the length of the first working surface 301 is longer than the second working surface 302.

For convenience of description, the two ends of the pan holder 307 are named as a free end and a fixed end, respectively. The fixed end is near one end of the connection assembly 308 and the free end is the end of the pan holder 307 away from the connection assembly 308.

When the first working surface 301 having a longer length serves as the top wall, the first working surface 301 is in contact with the bottom of the pan. At this time, the second work surface 302 is in contact with the fire cover 306 to ensure that the entire pan frame 307 does not move relative to each other when the load is carried. Moreover, the free end of the pan holder 307 during rotation should be directed away from the center of the fire cover 306 at this time.

When the second working surface 302 having a shorter length than the first working surface 301 serves as the top wall, the second working surface 302 is in contact with the bottom of the pan. At this time, the first work surface 301 is in contact with the fire cover 306 to ensure that the entire pan frame 307 does not move relative to each other when the load is carried. Moreover, the free end of the pan holder 307 during rotation should be directed toward the center of the fire cover 306 at this time.

The two cases described above are two basic operational forms of the burner assembly 300.

Since the first working surface 301 and the second working surface 302 are in contact with the fire head cover 306 in two basic working modes, the first working surface 301 and the second working surface 302 are provided with a bonding surface. 305, the bonding surface 305 is a plane. The positions of the two abutting faces 305 are respectively the contact areas of the two working faces with the fire head cover 306.

The first work surface 301 and the second work surface 302 include a support surface 304 in addition to the bonding surface 305. The bearing surface 304 is used to directly contact the bottom of the pan.

The support surface 304 is an uneven surface, and the support surface 304 may be serrated or wavy. Referring to FIG. 1, in the embodiment, the support surface 304 is in a zigzag shape.

The bearing surface 304 can reduce the probability of slippage between the bottom of the pan and the bearing surface 304.

The support faces 304 on both working faces are adjacent to the free end of the pan holder 307; the mating faces 305 on both faces are adjacent to the fixed end of the pan holder 307.

Differentiating the lengths of the first working surface 301 and the second working surface 302, a third working surface 303 can be derived, and the third working surface 303 is connected to the first working surface 301 and the second working surface 302, respectively.

In the basic working state in which the second working surface 302 is the top wall of the support bracket, both the second working surface 302 and the third working surface 303 can be in contact with the bottom of the pot. When the size of the bottom of the pot is small, the bottom edge of the pot is in contact with the slope of the third working surface 303. When the size of the bottom of the pot is slightly larger, the bottom of the pot is in contact with the second working surface 302. When the radius of the bottom of the pan is much larger than the distance between the connection assembly 308 and the center line of the fire cover 306, the pan 307 is folded outwardly, so that the second working surface 302 is in contact with the fire cover 306, and the first working surface 301 serves as a pot. The top wall of the frame 307 is in contact with the pot to be heated by the first working surface 301.

Referring to FIG. 9, the fire cover 306 is provided with four fire guide holes 310. The fire guide hole 310 not only reduces the overall weight, but also distributes the emerging flame evenly at the bottom of the object to be heated, so that the heat propagates upwards faster.

The outer edge of the fire hood 306 and the inner edge of the fire guide 310 are each provided with a downward flange.

The downward flange of the fire hood 306 can improve the overall strength of the fire hood 306, and is also convenient to be connected with the burner insulation shell; the downward flange of the fire guide hole 310 can reduce the deformation of the fire hood 306 at high temperatures, while Can increase the load bearing capacity of the pan holder 307.

The attachment assembly 308 is used to connect the pan holder 307 and the fire cover 306 while allowing the pan holder 307 to rotate about the fire cover 306.

Referring to FIG. 9, the connecting assembly 308 includes a rotating bracket and a rotating shaft. The rotation is directly fixed to the fire cover 306. The rotating bracket includes a base and two raised supporting plates. The two supporting plates extend from the lower side of the fire cover 306. The cover 306 has a top wall of the base against the bottom of the fire cover 306. The support plate and the pot holder 307 are respectively provided with through holes for inserting the rotating shaft. The rotating shaft passes through the pan holder 307 and is rotatably supported on the bracket.

Referring to Figures 10 to 12, the burner air distribution system includes an air intake fan fixing plate, an air intake fan, and a diverter table.

The air inlet cavity is disposed between the heat insulating tube of the combustion furnace and the body body of the combustion furnace, and the air inlet cavity and the combustion cavity are connected through the air venting hole, and the entire air inlet cavity has only the bottom air inlet and the furnace body. Ventilation holes, other areas are closed and not ventilated.

The top of the branching table 502 is connected to the bottom of the burner block, and the branching table 502 is disposed above the intake fan 501 and a gap is provided between the branching table 502 and the intake fan 501.

The flow dividing table 502 has a truncated cone shape, and the outer diameter of the branching table 502 gradually increases from bottom to top. The side wall of the upper and lower diverter table 502 is a sloped surface, and the wind blown by the air intake fan 501 first contacts the branching table 502, and It spreads around the side wall of the branching table 502 and enters the intake cavity.

Since the branching table 502 is disposed at the bottom of the furnace body and at the distance from the combustion cavity, the amount of heat transferred is large. Therefore, the temperature of the branching station 502 is high, and since the intake fan 501 is disposed below the branching table 502, the high temperature of the branching table 502 affects the surrounding environment.

Therefore, by forming the branching table 502 by the heat insulating material, the temperature of the branching table 502 can be lowered, and the intake fan 501 can be prevented from being accelerated in the high temperature environment.

A wide variety of insulation materials belong to the prior art and will not be described here.

The intake fan 501 is disposed at the air inlet of the furnace bottom and below the branching table 502. A gap is provided between the intake fan 501 and the branching table 502 to prevent the branching table 502 from transferring heat to the intake fan 501 or affecting the bleed air operation of the intake fan 501.

Referring to FIG. 11, the air intake fan 501 includes a rotating sleeve 504, a fan blade 505 and a fan frame 506. The fan frame 506 is provided with a first passage for placing the rotating sleeve 504 and the blade 505, and the blade 505 is fixedly connected with the rotating sleeve 504. The rotating sleeve 504 is rotatably disposed in the first passage, and the blade 505 is rotationally symmetrical about the rotational axis of the rotating sleeve 504. The fan frame 506 is used to support the rotating sleeve 504, the blade 505 is disposed on the side wall of the rotating sleeve 504, and the rotating sleeve 504 is rotatable within the frame 506.

The shape of the fan blade 505 and the working principle of the fan are both prior art. The structure of the fan frame 506 can refer to the structure of the notebook cooling fan, and details are not described herein.

The rotating sleeve 504 is disposed below the branching table 502, and the blade 505 is located below the side wall of the branching table 502. The air taken in by the air intake fan 501 enters the air intake cavity along the side wall of the branching table 502.

The bottom wall of the branching table 502 corresponds to the rotating sleeve 504 of the intake fan 501 on the vertical plane, and the side wall of the branching table 502 corresponds to the fan blade 505 of the intake fan 501 on the vertical plane, and the air blown in by the intake fan 501 Most of the direct blows are directed to the side walls of the splitter table 502 and are directed to the intake cavity along the inclined side wall faces.

An intake fan fixing plate 508, an intake fan fixing plate 508 is disposed under the intake fan 501, and a top wall of the intake fan fixing plate 508 abuts against a bottom wall of the fan frame 506, and the intake fan fixing plate 508 is provided for entering The second passage of the gas, the second passage being coaxial with the first passage.

An intake fan fixing plate 508 is disposed below the intake fan 501 to abut against the bottom wall of the intake fan 501. The second passage on the intake fan fixing plate 508 is coaxial with the first passage so as not to impede the intake fan 501 from blowing outside air into the intake cavity. The intake fan fixing plate 508 serves to prevent the intake fan 501 from being dropped or lost.

The intake fan 501 intake fan fixing plate 508 is provided with a threading groove 510 for passing through the power supply line 507 of the intake fan 501.

The threading slot 510 is disposed on the fixing plate to comb the power cord 507 to prevent the knotting. At the same time, a positioning block can be disposed on the power line 507, and the power cable 507 can be clamped through the positioning block on the power line 507. Threading groove 510.

The bottom cover is provided with a sinking groove for accommodating the intake fan fixing plate 508. The sinking groove is provided with a third passage for the intake air, and the third passage, the first passage and the second passage are coaxial, and constitute a through air passage.

Referring to Figure 12, at least three flaps 509 are disposed around the sinker. The three flaps 509 are rotationally symmetric about the centerline of the sinker and are coupled to the bottom cover by a rotating shaft. The flap 509 is rotatable about a rotating shaft in a horizontal plane, and the top of the flap 509 can abut against the bottom of the intake fan fixing plate 508.

The sinking groove can accommodate the intake fan fixing plate 508 and cooperate with the blocking piece below the intake fan fixing plate 508. 509 can limit the position of the intake fan fixing plate 508.

The flap 509 has two states of abutting against the bottom of the intake fan fixing plate 508 and completely disengaging the intake fan fixing plate 508 during the rotation. When the air intake fan fixing plate 508 is fixed by the blocking piece 509, it is more convenient to remove the fixing plate. .

In the present embodiment, the intake fan fixing plate 508 is caught in the sinking groove by the blocking piece 509, but it does not mean that only the blocking piece 509 can be used, and the fixing can be performed by the bolt.

Where not mentioned in the example section, reference may be made to the corresponding content in the foregoing method embodiments.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in a drawing, it is not necessary to further define and explain it in the subsequent drawings.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (11)

1. A portable combustion furnace characterized by comprising a burner furnace body, a burner support device, a combustion furnace isolation shell and a burner assembly;

   The burner furnace body comprises a top cover of a combustion furnace and a furnace body with a combustion cavity, the upper cover of the combustion furnace is disposed above the body of the furnace, the opening of the combustion cavity faces upward, the combustion a middle portion of the upper cover of the furnace is provided with a passage communicating with the combustion cavity, and a side wall of the furnace body body is divided into an upper side wall and a lower side wall in a vertical direction, and the lower side wall of the furnace body is disposed a first-stage air inlet hole for introducing air, a side wall of the upper cover of the combustion furnace is provided with a secondary air inlet hole, and the first-stage air inlet hole and the second-level air induction hole are both through holes;

   The burner support device includes a bottom cover and at least three support members, the bottom cover is disposed at a bottom of the combustion furnace and connected to the combustion furnace isolation shell, and the two ends of the support member respectively correspond to the ground and the bottom cover Bottom connection;

   The combustion furnace isolation casing is cylindrical and is used for enclosing the combustion furnace body, and a gap is disposed between the combustion furnace insulation shell and the combustion furnace body;

   The burner assembly includes a connection assembly, a fire head cover and a pan holder, the fire head cover being coupled to a top of the burner insulation casing, the pan frame being at least three and disposed on the fire head cover by the connection assembly Above.
2. A portable combustion furnace according to claim 1, further comprising a burner support device comprising a bottom cover and at least three support members, said bottom cover being disposed at the bottom of the combustion furnace and a burner isolation shell is connected, and two ends of the support member are respectively connected to the ground and the bottom surface of the bottom cover;

   The furnace body further includes an insulation tube and a heat insulation cover, a top wall of the heat insulation tube is connected to the upper cover of the furnace, and a bottom of the heat insulation tube is connected to the heat insulation cover, The heat insulating cover is disposed under the body of the furnace and is provided with a gap between the body and the body of the furnace, and the heat insulating cover and the body of the furnace are connected by a heat insulating bracket, and the heat insulating tube is An air intake cavity is formed between the body of the furnace body, and the heat insulation cover is provided with an air inlet opening for placing an air intake fan, the air intake fan brings air into the air intake cavity, and passes through the The primary bleed holes and/or the secondary bleed holes enter the combustion cavity.
3. A portable combustion furnace according to claim 2, further comprising a burner air distribution system including an intake fan and a diverting table, a top of said diverting table being coupled to a bottom of said furnace body, said diverting a stage is disposed above the air intake fan and a gap is disposed between the flow dividing table and the air intake fan, and the air intake fan is disposed at an air inlet of a bottom of the combustion furnace, and the air intake fan is used for A gas is delivered in the intake cavity, and the splitter is used to split the gas sucked by the intake fan.
4. A portable combustion furnace according to claim 3, wherein said branching table is in the shape of a truncated cone and the outer diameter of said diverting table is gradually increased from bottom to top, said intake fan comprising a rotating sleeve, a fan blade and a fan frame, the fan blade is fixedly connected to the rotating sleeve, and the rotating sleeve is rotatably disposed in the fan frame, wherein the plurality of blades are rotationally symmetric about a rotation axis of the rotating sleeve, a rotating sleeve is disposed below the diverter table, the fan blade is located below a side wall of the diverting table, and air sucked by the air intake fan enters the air intake cavity along a side wall of the diverting table Inside.
5. The portable combustion furnace according to claim 1, wherein the primary bleed hole comprises a first bleed hole, and the airflow entering the combustion cavity through the first bleed hole flows in a ring shape or a spiral shape. The lower side wall is provided with at least one channel recessed into the interior of the combustion cavity, the channel is vertically disposed, the first air vent is disposed on a sidewall of the channel, and the first The axial line of an air vent is out of plane with the center line of the body of the furnace, and the channel has a cross-sectional shape of a "V" shape or a circular arc shape.
6. The portable combustion furnace according to claim 1, wherein said burner insulation casing comprises a side wall body, said side wall body being cylindrical and for placing a furnace body of the combustion furnace, said side wall body comprising An arc portion, two extension portions and a flat portion, the arc portion is provided with a gap between the furnace body and the furnace body, and the two sides of the plane portion and the two sides of the arc portion The sides are respectively connected by the extensions, and the extensions are flat plates, and the extensions smoothly transition between the curved portions.
7. A portable combustion furnace according to claim 6, wherein said arcuate portion and said extension portion are each provided with at least one outwardly convex first arcuate channel, said arcuate channel being along a horizontal plane Settings.
8. A portable combustion furnace according to claim 6, wherein said arcuate portion and said extension portion are each provided with a second arcuate channel recessed toward said furnace body, said second arc The bottom wall of the shaped channel is pressed against the top wall of the furnace body.
9. The portable combustion furnace according to claim 1, wherein an intermediate portion of said fire head cover is provided with a pilot passage for extracting a flame in said furnace body.
10. The portable combustion furnace according to claim 9, wherein the pan holder is in the form of a strip, and the two ends of the pan holder are respectively a fixed end and a free end, and the fixed end and the fire head cover pass the The connecting assembly is rotatably connected, the fixed end is located between the free end and the priming passage or the free end is located between the fixed end and the pylon passage, and the pan holder comprises a plurality of the pan holders respectively a first working surface and a second working surface on two opposite side walls, the first working surface and the second working surface alternately become the top wall of the pan holder during the rotation of the pan holder and The object to be heated is in contact.
11. The portable combustion furnace according to claim 1, wherein the outer edge of the fire head cover is provided with a flange for connecting the burner insulation casing.

Images