Combustion furnace for outdoor open fire stove

Abstract

The utility model provides a combustion furnace for an outdoor open fire stove, which is characterized in that an inner shell (2) is sleeved in an outer shell (1), and a cavity (17) is arranged between the outer shell (1) and the inner shell (2); the main support (10) is arranged in the inner shell (2) in a sleeved mode, the main support (10) is composed of an upper metal ring (101), a lower metal ring (102) and a plurality of metal rods (103), the radius of the upper metal ring (101) located on the upper portion is smaller than that of the lower metal ring (102) located on the lower portion, and the metal rods (103) are arranged between the upper metal ring (101) and the lower metal ring (102). The combustion furnace for the outdoor open fire stove can effectively solve the problems of potential safety hazards, persistent combustion and the like in the ignition and raw material replacement process of an existing outdoor combustion furnace.

Description

Technical Field

[0001] The utility model relates to a combustion furnace for an outdoor open-fire stove. Background Art

[0002] As people's living standards have greatly improved, the demand for cooking during outdoor camping has greatly increased, so a combustion furnace with high integration and high heat conversion rate is needed. As the main cooking equipment during outdoor travel, the combustion furnace has stable combustion quality and safety, which is very important. At present, the raw materials for combustion furnaces are mostly composite wood chips or canned butane gas. This type of combustion furnace requires an additional ignition device to ignite the raw materials, which increases safety hazards. In order to continuously supply heat during the combustion process, it is also necessary to manually add or replace the raw materials in the short term. This method will also have safety hazards and stable and continuous combustion problems. Summary of the invention

[0003] The utility model aims to provide a combustion furnace for outdoor open-flame stoves which can improve heat feedback, ensure calorific value efficiency and make combustion safer and more stable. The technical scheme of the utility model is: a combustion stove for outdoor open flame stove, comprising: an outer shell (1), an inner shell (2), a main bracket (10) and a plurality of auxiliary brackets (7); wherein the inner shell (2) is sleeved in the outer shell (1), and a cavity (17) is provided between the outer shell (1) and the inner shell (2); the main bracket (10) is sleeved in the inner shell (2), and the main bracket (10) is composed of an upper metal ring (101), a lower metal ring (102) and a plurality of metal rods (103), wherein the radius of the upper metal ring (101) located at the upper part is smaller than that of the lower metal ring (102) located at the lower part, and the plurality of metal rods (103) are arranged between the upper metal ring (101) and the lower metal ring (102); the plurality of auxiliary brackets (7) are fixed on the inner wall of the inner shell (2), and the plurality of auxiliary brackets (7) are used to support the lower metal ring (102) located at the lower part; a temperature sensor (5) and a plurality of An evacuation hole (6) is provided, an inner shell cover (21) is provided at the bottom of the inner shell (2); a heat-resistant cover (3) is provided on the upper part of the outer shell (1), and an air guide plate (20) is provided at the bottom of the outer shell (1); a fixed base (15) is provided between the inner shell cover (21) and the air guide plate (20), and a heat insulation pad (16) is provided between the bottom of the inner shell cover (21) and the fixed base (15); a spring (14) is provided between the fixed base (15) and the air guide plate (20); the air guide plate (20) is composed of an annular plate (201) located at the upper part and an annular cone frame (202) located at the lower part, wherein the large aperture (203) of the annular cone frame (202) is connected to the annular plate (201), wherein the annular plate (201) is provided with a plurality of air guide holes (204), and the air guide holes (204) are connected to air guide plates (205), and each air guide plate (205) is opened at a certain angle to the annular plate (201) and the opening direction is consistent.

[0004] The air guide holes (204) are arranged at equal intervals on the annular plate (201); the air guide blades (205) connected to each air guide hole (204) are located at the same position; and the angle between each air guide blade (205) and the annular plate (201) is the same.

[0005] A plurality of spring clip buckles (8) are arranged on the upper part of the auxiliary bracket (7); the plurality of spring clip buckles (8) and the plurality of auxiliary brackets (7) are respectively fixed on the lower metal ring (102) at the lower part of the main bracket (10).

[0006] The straight section (110) of the fuel pipe (11) for conveying fuel into the inner shell (2) is arranged below the lower metal ring (102), and the arc section (111) of the fuel pipe (11) is arranged below the upper metal ring (101); the temperature sensor (5) passes through the outer shell (1) and the inner shell (2) and is arranged above the lower metal ring (102); the igniter (12) passes through the outer shell (1) and the inner shell (2) and is arranged below the straight section (110) of the fuel pipe (11).

[0007] The sensor conduit (13) passes through the outer shell (1) and the inner shell (2), the temperature sensor (5) is arranged inside the sensor conduit (13), the steel wire bracket (9) is arranged at the lower part of the auxiliary bracket (7), a plurality of auxiliary brackets (7) are used to support the steel wire bracket (9), and the fireproof fiber cloth (4) is arranged between the steel wire bracket (9) and the inner shell cover (21).

[0008] The working principle of this utility model:

[0009] The utility model utilizes an annular cavity (17) formed between the outer shell (1) and the inner shell (2), and the required combustion-supporting air is actively sucked in by the combustion-supporting fan. The provided combustion-supporting airflow is blown into the annular cavity (17) through the air guide plate (20) and then enters the combustion furnace from the inner shell hole. A plurality of spring clips (8) and a plurality of auxiliary brackets (7) are respectively fixed on the lower metal ring (102) at the lower part of the main bracket (10), so that the main bracket (10) is completely fixed in the combustion furnace. The temperature sensor (5) senses the internal temperature of the combustion furnace in real time and reflects the internal combustion state. The initial flame of ignition is mainly concentrated in the space formed by the bottom of the inner shell (2) and the upper metal ring (101). After a certain period of combustion, the flame gradually passes through the main bracket (10), and the vigorous flame is concentrated in the space formed by the relatively dense holes of the combustion furnace evacuation holes (6) to burn, and the heat generated by the combustion will flow to the outer surface of the heating carrier.

[0010] Technical effects of this utility model:

[0011] The utility model has the following beneficial effects:

[0012] 1. By utilizing the annular cavity (17) formed between the outer shell (1) and the inner shell (2), the combustion-supporting wind flow is blown into the annular cavity (17) through the wind guide plate (20) and then enters the combustion furnace from the inner shell hole, so that the wind is more uniform and effective, and the combustion effect is better. The wind guide plate (20) is composed of an annular plate (201) located at the upper part and an annular cone frame (202) located at the lower part. The large aperture (203) of the annular cone frame (202) is connected to the annular plate (201). The annular cone frame can reduce wind resistance, so that the combustion-supporting wind flowing through the wind guide plate can efficiently enter the annular cavity (17). In addition, by utilizing the heat-resistant cover (3) arranged on the top of the outer shell (1), it is possible to prevent the heat in the inner shell (2) from being lost too quickly, improve heat feedback, and ensure calorific value efficiency.

[0013] 2. By using a plurality of spring clips (8) and a plurality of auxiliary brackets (7) to be fixed on the lower metal ring (102) at the lower part of the main bracket (10), the main bracket is completely fixed in the combustion furnace, so that the flame is not easy to jump out during the ignition process, and the combustion is safer and more stable.

[0014] 3. By utilizing the air guide holes (204) and air guide blades (205) arranged at equal intervals on the air guide plate (20), and the angle and position between each air guide blade (205) and the annular plate (201) are the same, the combustion-supporting air can enter the annular cavity (17) formed between the outer shell (1) and the inner shell (2) more evenly, and the stable and uniform air volume will not cause flames due to strong wind, so that the combustion is more stable and uniform.

[0015] 4. The temperature sensor (5) passes through the outer shell (1) and the inner shell (2) and is arranged on the lower metal ring (102). The igniter (12) passes through the outer shell (1) and the inner shell (2) and is arranged at the lower part of the fuel pipe (11). When the combustion furnace is used, the temperature inside the combustion furnace can be sensed in real time through the temperature sensor (5), thereby reflecting whether the fuel inside is ignited and whether the combustion is sufficient. When it is found that it is not ignited or the combustion is insufficient, the combustion pump can be actively shut down to prevent the waste of fuel and excessive carbon deposition. In addition, the fuel pump draws fuel from the fuel tank. When the combustion furnace is used, it is only necessary to observe the amount of fuel in the fuel tank, thereby avoiding the need to directly replace the fuel from the fuel furnace, thereby ensuring the safety and continuous stability of the combustion process.

[0016] 5. The sensor conduit (13) passes through the outer shell (1) and the inner shell (2), and the temperature sensor (5) is arranged inside the sensor conduit (13), which can avoid external interference with the temperature sensor (5) so that it can accurately sense the temperature in the combustion furnace. The steel wire bracket (9) is arranged at the lower part of the auxiliary bracket (7), and multiple auxiliary brackets (7) are used to support the steel wire bracket (9). The fireproof fiber cloth (4) is arranged at the lower part of the steel wire bracket (9), and the inner shell cover (21) is located at the bottom of the inner shell (2). The steel wire bracket (9) is used to fix the fireproof fiber cloth (4) with the inner shell cover (21). The fireproof fiber cloth is a carrier for carrying fuel oil, which reserves and provides fuel for the combustion furnace in real time.

[0017] 6. The fixed base (15) is located between the inner shell cover (21) and the air guide plate (20), and the heat insulation pad (16) is located between the bottom of the inner shell cover (21) and the fixed base (15). The function of the heat insulation pad is to reduce the temperature in the combustion furnace from being conducted outward. The spring (14) is arranged between the fixed base (15) and the air guide plate (20). The function of the arranged spring is to use its elastic resistance force to make the inner shell (2) completely in a fixed state, thereby ensuring the stability and safety of combustion. When necessary, the inner shell cover (21) can be easily disassembled to clean carbon deposits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic cross-sectional view of the main support 10 in the embodiment of the present utility model;

[0019] Figure 2 Schematic diagram of the cross-sectional structure of the air guide plate 20 in the embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the spring clip undercut 8 in the embodiment of the utility model;

[0021] Figure 4 It is a cross-sectional view of the overall structure of a combustion furnace for an outdoor open flame stove in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] See also Figure 1The utility model provides a combustion stove for an outdoor open flame stove, comprising: an outer shell 1, an inner shell 2, a main bracket 10 and a plurality of sub-brackets 7; wherein the inner shell 2 is mounted in the outer shell 1, and a cavity 17 is provided between the outer shell 1 and the inner shell 2; the main bracket 10 is mounted in the inner shell 2, and the main bracket 10 is composed of an upper metal ring 101, a lower metal ring 102 and a plurality of metal rods 103, wherein the radius of the upper metal ring 101 located at the upper part is smaller than the lower metal ring 102 located at the lower part, and the plurality of metal rods 103 are arranged between the upper metal ring 101 and the lower metal ring 102, and the plurality of sub-brackets 7 are fixed on the inner wall of the inner shell 2, and the plurality of sub-brackets 7 are used to support the lower metal ring 102 located at the lower part; a temperature sensor 5 and a plurality of metal rods 103 are arranged on the upper part of the inner shell 2 An evacuation hole 6 is provided, an inner shell cover 21 is provided at the bottom of the inner shell 2; a heat-resistant cover 3 is provided on the upper part of the outer shell 1, and an air guide plate 20 is provided at the bottom of the outer shell 1; a fixed base 15 is provided between the inner shell cover 21 and the air guide plate 20, and a heat-insulating pad 16 is provided between the bottom of the inner shell cover 21 and the fixed base 15; a spring 14 is provided between the fixed base 15 and the air guide plate 20; the air guide plate 20 is composed of an annular plate 201 located at the upper part and an annular cone frame 202 located at the lower part, a large aperture 203 of the annular cone frame 202 is connected to the annular plate 201, wherein a plurality of air guide holes 204 are provided on the annular plate 201, and air guide plates 205 are connected to the air guide holes 204, and each air guide plate 205 is opened at a certain angle to the annular plate 201 and the opening direction is consistent.

[0023] Embodiment 1: The metal rod 103 can be welded between the upper metal ring and the lower metal ring by welding; the auxiliary bracket 7 can be welded to the inner wall of the inner shell 2, or fixed to the inner wall of the inner shell 20 by rivets.

[0024] The structure in this embodiment can only prevent it from falling downward, but cannot prevent it from moving upward. As an outdoor tool, the main bracket 10 may move upward due to the bumps in transportation and loading and unloading, resulting in misalignment and danger. In order to further fix the main bracket 10, multiple spring clip buckles 8 are provided on the upper part of the multiple sub-brackets 7, and the multiple spring clip buckles 8 and the multiple sub-brackets 7 are respectively fixed on the lower metal ring 102 at the lower part of the main bracket 10.

[0025] See also Figure 2 The air guide holes 204 are arranged at equal intervals on the annular plate 201; the positions of the air guide pieces 205 connected to each air guide hole 204 are the same; the angle between each air guide piece 205 and the annular plate 201 is the same; through the air guide holes opened between each air guide piece and the air guide plate, the combustion-supporting air enters the inner shell 2 evenly and stably in a certain rotation direction.

[0026] See also Figure 3The one-way rotating side AB of the spring clip buckle 8 can rotate around point A along the dotted arrow, thereby allowing the main bracket 10 to enter the inner shell 2. Since the spring clip is arranged inside, when the AB side is reset, the lower metal ring is blocked by the spring clip buckle 8, thereby playing a fixing role.

[0027] It is understandable that when installing the main bracket 10, it is necessary to enter from the upper part of the inner shell 2. When the lower metal ring 102 passes through the spring clip buckle 8, the main bracket 10 can only continue to move downward and cannot be pulled out. There are multiple sub-brackets 7 below to form a shield, so the lower metal ring can be firmly fixed in the inner shell 2, thereby achieving the purpose of fixing the main bracket 10.

[0028] See also Figure 4 The straight section 110 of the fuel pipe 11 for conveying fuel into the inner shell 2 is arranged below the lower metal ring 102, and the arc section 111 of the fuel pipe 11 is arranged below the upper metal ring 101; the temperature sensor 5 passes through the outer shell 1 and the inner shell 2 and is arranged above the lower metal ring 102, and the igniter 12 passes through the outer shell 1 and the inner shell 2 and is arranged below the straight section 110 of the fuel pipe 11. When the fuel drips from the straight section through the arc section into the inner shell 2, the fuel is preheated, and the temperature sensor can sense the internal temperature of the combustion furnace in real time.

[0029] The sensor conduit 13 passes through the outer shell 1 and the inner shell 2, and the temperature sensor 5 is arranged inside the sensor conduit 13, which can avoid external interference with the temperature sensor 5, so that it can accurately sense the temperature in the combustion furnace. The steel wire bracket 9 is arranged at the lower part of the auxiliary bracket 7, and multiple auxiliary brackets 7 are used to carry the steel wire bracket 9. The fireproof fiber cloth 4 is arranged between the steel wire bracket 9 and the inner shell cover 21, and the steel wire bracket 9 is used to fix the fireproof fiber cloth 4 together with the inner shell cover 21. The fireproof fiber cloth is a carrier for carrying fuel oil, which reserves and provides fuel for the combustion furnace in real time, and the inner shell cover 21 can be easily disassembled when necessary to clean carbon deposits.

Claims

1. A combustion furnace for outdoor open flame stoves, characterized in that: include: An outer shell (1), an inner shell (2), a main bracket (10) and a plurality of sub-brackets (7); wherein the inner shell (2) is sleeved inside the outer shell (1), and a cavity (17) is provided between the outer shell (1) and the inner shell (2); the main bracket (10) is sleeved inside the inner shell (2), and the main bracket (10) is composed of an upper metal ring (101), a lower metal ring (102) and a plurality of metal rods (103), wherein the radius of the upper metal ring (101) located at the top is smaller than that of the lower metal ring (102) located at the bottom, and the plurality of metal rods (103) are arranged between the upper metal ring (101) and the lower metal ring (102); the plurality of sub-brackets (7) are fixed on the inner wall of the inner shell (2), and the plurality of sub-brackets (7) are used to support the lower metal ring (102) located at the bottom; a temperature sensor (5) and a plurality of evacuation holes (6) are arranged on the upper part of the inner shell (2), and the bottom of the inner shell (2) is provided with a temperature sensor (5) and a plurality of evacuation holes (6). An inner shell cover (21) is provided; a heat-resistance cover (3) is provided on the upper part of the outer shell (1), and an air guide plate (20) is provided on the bottom of the outer shell (1); a fixed base (15) is provided between the inner shell cover (21) and the air guide plate (20), and a heat-insulating pad (16) is provided between the bottom of the inner shell cover (21) and the fixed base (15); a spring (14) is provided between the fixed base (15) and the air guide plate (20); the air guide plate (20) is composed of an annular plate (201) located at the upper part and an annular cone frame (202) located at the lower part, a large aperture (203) of the annular cone frame (202) being connected to the annular plate (201), wherein a plurality of air guide holes (204) are provided on the annular plate (201), and an air guide plate (205) is connected to the air guide hole (204), and each air guide plate (205) is opened at a certain angle to the annular plate (201) and the opening direction is consistent.

2. The combustion furnace for outdoor open flame stove according to claim 1, characterized in that: The air guide holes (204) are arranged at equal intervals on the annular plate (201); the air guide blades (205) connected to each air guide hole (204) are located at the same position; and the angle between each air guide blade (205) and the annular plate (201) is the same.

3. The combustion furnace for outdoor open flame stove according to claim 1 is characterized in that: A plurality of spring clip buckles (8) are arranged on the upper part of the auxiliary bracket (7); the plurality of spring clip buckles (8) and the plurality of auxiliary brackets (7) are respectively fixed on the lower metal ring (102) at the lower part of the main bracket (10).

4. The combustion furnace for outdoor open flame stove according to claim 1 is characterized in that: The straight section (110) of the fuel pipe (11) for conveying fuel into the inner shell (2) is arranged below the lower metal ring (102), and the arc section (111) of the fuel pipe (11) is arranged below the upper metal ring (101); the temperature sensor (5) passes through the outer shell (1) and the inner shell (2) and is arranged above the lower metal ring (102); the igniter (12) passes through the outer shell (1) and the inner shell (2) and is arranged below the straight section (110) of the fuel pipe (11).

5. The combustion furnace for outdoor open flame stove according to claim 1, characterized in that: The sensor conduit (13) passes through the outer shell (1) and the inner shell (2), the temperature sensor (5) is arranged inside the sensor conduit (13), the steel wire bracket (9) is arranged at the lower part of the auxiliary bracket (7), a plurality of auxiliary brackets (7) are used to support the steel wire bracket (9), and the fireproof fiber cloth (4) is arranged between the steel wire bracket (9) and the inner shell cover (21).

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