Outdoor dual-purpose stove

Abstract

The utility model discloses an outdoor dual-purpose stove which comprises a steel wire stove frame arranged above the stove and a reflecting plate arranged on the side portion of the steel wire stove frame. A composite metal net, porous ceramic, a gas baffle and an injection pipe are arranged in the stove from top to bottom; the injection pipe is connected with a nozzle which is externally connected with a gas conveying pipe; a first cavity is formed by an incoming airflow field between the injection pipe and the gas baffle; a second cavity is formed by an air flow passing field between the air baffle and the porous ceramic; a third cavity is formed by an air flow passing field between the porous ceramic and the composite metal net; and the composite metal net and the steel wire furnace frame are arranged at intervals in the vertical direction. The problems of tempering and limited power of a ceramic burner are solved through the burner structure in which the ceramic perforated plate is combined with the composite metal net, the processing method is simple, and compared with a high-temperature-resistant foam metal burner, the high-temperature-resistant foam metal burner has more advantages in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor stoves, in particular to an outdoor dual-purpose stove. Background Art

[0002] Gas heating stoves on the market that use ceramics as combustion catalysts have the defects of low power and slow ceramic red-hot speed; the unit area power of ceramic combustion catalysts on the market can only reach about 0.12W / mm² to 0.19W / mm², resulting in large size of heaters with high-power ceramic burners; in addition, since ceramic burners are red-hot for a long time, heat is easily transferred to the burner cavity, causing the burner to backfire, so the size of a single ceramic plate and the combustion and heating time are limited.

[0003] Metal mesh burners on the market use flames to burn metal, which then converts the heat into infrared radiation. One type uses a single burner to generate flames that burn the metal mesh to generate heat and provide warmth. Other types use high-temperature-resistant foam metal mesh or multi-layer metal mesh directly as a burner catalyst. The former, due to its single-layer nature, has low infrared radiation density; the latter is limited by the high cost of processing high-temperature-resistant foam metal. Utility Model Content

[0004] The purpose of the present invention is to provide an outdoor dual-purpose stove to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an outdoor dual-purpose stove, comprising a steel wire stove frame arranged above the stove and a reflective plate arranged on the side of the steel wire stove frame;

[0006] The interior of the furnace includes composite metal mesh, porous ceramics, air baffle and ejector tube from top to bottom;

[0007] The ejector tube is connected to a nozzle, and the nozzle is externally connected to a gas pipe;

[0008] The incoming air flow field between the ejector tube and the air baffle forms a first cavity;

[0009] The air flow field between the air baffle and the porous ceramic forms a second cavity;

[0010] The air flow field between the porous ceramic and the composite metal mesh forms a third cavity;

[0011] The composite metal mesh and the steel wire furnace frame are spaced apart in the vertical direction.

[0012] Preferably, the steel wire grate comprises a support frame and a steel wire mesh, the steel wire mesh covers the upper end surface of the steel wire grate, and the bottom support of the support frame is fixed to the upper edge of the stove.

[0013] Preferably, several groups of reflective plates are provided, and the bottoms of the reflective plates are equal to or lower than the height of the composite metal mesh.

[0014] Preferably, a mounting bracket is provided on the upper edge of the stove body, the reflective plate is hinged to the mounting bracket, and the reflective plate can be rotated relative to the mounting bracket to adjust the installation angle of the reflective plate.

[0015] Preferably, the composite metal mesh is obtained by stacking two metal meshes, including an upper metal mesh and a lower metal mesh.

[0016] Preferably, the mesh number of the upper metal mesh is twice that of the lower metal mesh, and the wire diameter of the upper metal mesh is 1.5-2 times that of the lower metal mesh.

[0017] Preferably, the upper metal layer and the lower metal mesh are spaced 0.1 mm to 0.5 mm apart.

[0018] Preferably, the composite metal mesh as a whole is a structure that arches from four sides to the middle, and the four ends of the composite metal are provided with straight sections for connecting to the stove body. The inner side of the straight section is connected to an upward-raised reverse arc section, the upper end of the reverse arc section is connected to a forward arc section, and the inner side of the forward arc section is connected to an arched section.

[0019] Preferably, the air baffle is composed of a plurality of baffles, and gaps are formed between adjacent baffles for gas to pass through.

[0020] Preferably, the baffle includes a middle baffle and side baffles, the middle baffle is arranged horizontally, and the side baffles are arranged to be inclined downward from the inner wall of the stove.

[0021] Compared with the existing technology, the beneficial effects of the present invention are: the present invention solves the problems of tempering and power limitation of ceramic burners through the burner structure of ceramic porous plate combined with composite metal mesh, and the processing method is simple and the cost is greater than that of high-temperature resistant foam metal burners. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the composite metal mesh of the utility model;

[0024] Figure 3 This is a side view schematic diagram of the composite metal mesh of the utility model;

[0025] Figure 4 This is an overall schematic diagram of the bottom shell structure of the utility model;

[0026] Figure 5 It is a bottom schematic diagram of the bottom shell structure of the utility model;

[0027] Figure 6 It is a cross-sectional view of the bottom shell structure of the utility model;

[0028] Figure 7 This is a top view of the air baffle of the utility model

[0029] Figure 8 This is a cross-sectional view of the utility model applied to a stove;

[0030] Figure 9 This is a schematic diagram of the assembly state of the air baffle and the bottom shell structure of the utility model;

[0031] Figure 10 It is a schematic diagram of the overall structure appearance of the utility model. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figure 1-10 As shown, the utility model provides a technical solution: an outdoor dual-purpose stove, comprising a steel wire stove frame 2 arranged above the stove and a reflective plate 1 arranged on the side of the steel wire stove frame 2;

[0034] The interior of the furnace includes, from top to bottom, a composite metal mesh 4, porous ceramics 5, an air baffle 8, and an ejector tube 6;

[0035] The ejector tube 6 is connected to a nozzle 7, and the nozzle 7 is externally connected to a gas delivery pipe;

[0036] The inflowing air flow field between the ejector tube 6 and the air baffle 8 forms a first cavity 001;

[0037] The air flow field between the air baffle 8 and the porous ceramic 5 forms a second cavity 002;

[0038] Reference Figure 6 、 Figure 7 as well as Figure 9As shown, the air baffle 8 includes a central baffle 82 and side baffles. The central baffle 82 is horizontally arranged on the top of the inner cover 91. The side baffles are spaced apart from the central baffle 82 to form a flow gap for gas to pass through, and the side baffles are all arranged downwardly. The air baffle 8 is a quadrilateral structure as a whole. The central baffle 82 is arranged along the length direction. The central baffle 82 has a hexagonal structure. The side baffles include triangular baffles 81 and trapezoidal baffles 83. The triangular baffles 81 and trapezoidal baffles 83 are respectively arranged on both sides of the central baffle 82, and form a bidirectional Y-shaped flow gap on both sides of the central baffle 82. Figure 7 As shown in , when making it, first select a rectangular plate and cut out the position of the flow gap to get Figure 7 The structure of the central baffle 82 and the side baffles is then assembled. Finally, the side baffles are pressed down along their connection edges with the rectangular plate to form the air baffle 8. Compared to conventional air baffles with direct holes, the air baffle proposed in this embodiment is more conducive to reducing gas pressure and produces less airflow noise, meeting the requirement of less than 80 decibels. It also achieves a more uniform airflow and better flame uniformity.

[0039] Reference Figure 2 As shown, the gas enters the ejector tube 6 through the nozzle, is ejected from one end of the ejector tube 6, enters the first cavity 00, and contacts the air baffle 8 after being reflected by the inner wall of the furnace. The air baffle 8 disperses the gas and enters the porous ceramic 5 upward in the form of a vortex.

[0040] The air flow field between the porous ceramic 5 and the composite metal mesh 4 forms a third cavity 003;

[0041] The composite metal mesh 4 and the steel wire furnace frame 2 are spaced apart in the vertical direction.

[0042] The dual-purpose stove of this embodiment can be used as an outdoor heating stove and a cooking stove. The cooker can be directly placed on the wire stove rack 2 for heating. Figure 1 As shown, the wire grate 2 includes a support frame and a wire mesh 3. The wire mesh 3 covers the upper end surface of the wire grate 2, and the bottom support of the support frame is fixed to the upper edge of the stove. Figure 2 As can be seen in the figure, the steel wire mesh 3 and the composite metal mesh 4 actually form a certain spacing space, which can improve the windproof performance and infrared conversion performance.

[0043] Continue to refer to Figure 1 As shown, several groups of reflectors 1 are installed, with the bottoms of the reflectors 1 positioned at or below the height of the composite metal mesh 4. The reflectors' function is to reflect and concentrate infrared radiation from the composite metal mesh 4. A mounting bracket is hingedly connected to the upper edge of the stove body, allowing the reflectors 1 to rotate relative to the bracket to adjust their installation angle.

[0044] Reference Figure 2 as well as Figure 3 As shown, the composite metal mesh 4 is obtained by superimposing two metal meshes, including an upper metal mesh and a lower metal mesh. The mesh number of the upper metal mesh is twice that of the lower metal mesh, and the wire diameter of the upper metal mesh is 1.5-2 times that of the lower metal mesh. In this embodiment, the upper metal mesh adopts an 80-mesh 0.12mm wire diameter, and the lower metal mesh adopts a 40-mesh 0.2mm wire diameter. The upper metal mesh and the lower metal mesh are spaced 0.1mm-0.5mm apart, preferably 0.3mm. The lower metal mesh with a 40-mesh 0.2mm wire diameter is located in the lower layer to play a supporting role, and the upper metal mesh with a 80-mesh 0.12mm wire diameter is located in the upper layer to increase the density of the fire holes. When burning, the 80-mesh 0.12mm metal mesh can quickly burn red and turn into infrared radiation, and the 40-mesh 0.2mm metal mesh will also turn red later, but it can maintain the shape of the 003 cavity without causing major changes.

[0045] The design of the composite metal mesh 4 forms a third cavity 003. The gas burns on the surface of the composite metal mesh 4 and converts heat into infrared. After long-term use, only the temperature of the third cavity 003 is high, and the porous ceramic 5 does not turn red. Therefore, the internal temperature of the first cavity 001 and the second cavity 002 will not be too high, thus solving the problem of high-power and long-term combustion tempering.

[0046] What is more worth mentioning is that the design of the third cavity 003 can increase the pressure and flow rate upper limit of the gas entering the first cavity 001, thereby increasing the flame ignition speed.

[0047] In addition, the overlapping design of metal meshes with different mesh sizes, such as 40# and 80#, forms micro-pores similar to foam metal, which increases the combustion area and has better wind resistance.

[0048] The gap design between the upper and lower metal meshes solves the problem of friction noise caused by the mesh expanding due to heat.

[0049] On this basis, the overall structure of the composite metal mesh 4 is also specially designed, referring to Figure 3 As shown, the composite metal mesh 4 has an overall structure with four sides arching toward the center. Straight sections 31 are provided at the four ends of the composite metal mesh 4 for connection to the stove body. The inner sides of the straight sections 31 are connected to upwardly curved reverse sections 32. The upper ends of the reverse sections 32 are connected to forward curved sections 33, and the inner sides of the forward curved sections 33 are connected to arched sections 34. The overall arched shape and edge curvature significantly increase the service life of the composite metal mesh 4, prevent deformation during use that could cause unstable combustion, and improve the fineness of the flame.

[0050] Reference Figure 8As shown, when in use, the gas is dispersed by the air baffle 8 and transported upward in the form of a vortex. After being rectified by the porous ceramic 5, it continues to be transported upward until a vortex is formed on the surface of the composite metal mesh 4, where it is ignited and burned.

[0051] Reference Figure 4 As shown, the porous ceramic 5, the air baffle 8 and the ejector tube 6 are all installed in the bottom shell 9, the composite metal mesh 4 is covered on the upper end surface of the porous ceramic 5, and the bottom of the composite metal mesh 4 is fixed to the upper edge of the bottom shell 9.

[0052] like Figure 5-7 As shown, the bottom of the bottom shell 9 is provided with an upwardly protruding inner cover 91, and the inner cover 91 is raised at the bottom of the bottom shell 9 to form a receiving cavity 92 for fixing the ejector tube 6;

[0053] One end of the inner cover 91 is surrounded by the bottom shell 9 to form a diffusion cavity 93, and the output end of the ejector tube 6 extends into the diffusion cavity 93. The diffusion cavity 93 is a part of the first cavity 001;

[0054] Reference Figure 6 As shown, the first cavity 001 has a structure that is wide at the top and narrow at the bottom.

[0055] Reference Figure 6 as well as Figure 7 As shown, the first cavity 001 is the output position of the ejector tube 6. Since the ejector tube 6 is connected to the gas supply pipe from the nozzle 7, the gas source of the gas supply pipe is a gas tank. The outlet pressure of the gas tank output pressure regulating valve is relatively large, generally at 0.13 MPa, which is two orders of magnitude larger than the 0.0028 MPa of domestic gas. Therefore, the first cavity 001 of this embodiment is designed to have the function of slowing down the airflow. The overall deceleration of the airflow is achieved by using a structure that is wide at the top and narrow at the bottom. Figure 5 as well as Figure 8 As shown, a diffusion chamber 93 is designed, and the depth of the diffusion chamber 93 is greater than the accommodating chamber 92 , so that after the airflow is output from the ejector tube 6 , it hits the inner wall and then achieves uniform diffusion, thereby contacting the air baffle 8 .

[0056] Continue to refer to Figure 8 As shown, when the nozzle 7 sprays the combustible gas in the gas tank into the ejector tube 6, under the action of negative pressure, air enters the ejector tube 6 from the bottom and mixes. In the traditional structure, the mixing of air and combustible gas is insufficient, which affects the uniformity of the flame. In the present embodiment, a spoiler column 61 is provided in the ejector tube 6. Referring to the figure, the spoiler column 61 is arranged at the bottom of one side of the ejector tube 6 close to the output end. In actual application, a threaded hole is opened at the installation place, and a screw is fixed on the threaded hole, and the screw can realize the function of the spoiler column 61. The head of the screw protrudes in the ejector tube 6 to realize the function of spoiler, promote the uniform mixing of air and combustible gas, and improve the uniformity of combustion.

[0057] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor dual-purpose stove, characterized by: It comprises a steel wire furnace rack (2) arranged above the furnace and a reflection plate (1) arranged on the side of the steel wire furnace rack (2); The interior of the furnace comprises, from top to bottom, a composite metal mesh (4), porous ceramics (5), an air baffle (8), and an ejector tube (6); The ejector tube (6) is connected to a nozzle (7), and the nozzle (7) is externally connected to a gas transmission pipe; The incoming air flow field between the ejector tube (6) and the air baffle (8) forms a first cavity (001); The air flow field between the air baffle (8) and the porous ceramic (5) forms a second cavity (002); The air flow field between the porous ceramic (5) and the composite metal mesh (4) forms a third cavity (003); The composite metal mesh (4) and the steel wire furnace rack (2) are spaced apart in the vertical direction.

2. The outdoor dual-purpose stove according to claim 1, characterized in that: The steel wire furnace frame (2) comprises a support frame and a steel wire mesh (3), wherein the steel wire mesh (3) covers the upper end surface of the steel wire furnace frame (2), and the bottom support of the support frame is fixed to the upper edge of the furnace.

3. The outdoor dual-purpose stove according to claim 1, characterized in that: The reflecting plates (1) are provided in a plurality of groups, and the bottoms of the reflecting plates (1) are equal to or lower than the height of the composite metal mesh (4).

4. The outdoor dual-purpose stove according to claim 3, characterized in that: A mounting bracket is provided on the upper edge of the stove body, and the reflective plate (1) is hinged to the mounting bracket. The reflective plate (1) can be rotated relative to the mounting bracket to adjust the mounting angle of the reflective plate (1).

5. The outdoor dual-purpose stove according to claim 1, characterized in that: The composite metal mesh (4) is obtained by stacking two metal meshes, including an upper metal mesh and a lower metal mesh.

6. The outdoor dual-purpose stove according to claim 5, characterized in that: The mesh number of the upper metal mesh is twice that of the lower metal mesh, and the wire diameter of the upper metal mesh is 1.5-2 times that of the lower metal mesh.

7. The outdoor dual-purpose stove according to claim 5, characterized in that: The upper metal mesh and the lower metal mesh are spaced 0.1mm-0.5mm apart.

8. The outdoor dual-purpose stove according to claim 5, characterized in that: The composite metal mesh (4) as a whole is a structure that arches from four sides toward the middle. The four ends of the composite metal mesh (4) are provided with straight sections (31) for connecting to the stove body. The inner side of the straight section (31) is connected to an upward-curved reverse arc section (32). The upper end of the reverse arc section (32) is connected to a forward arc section (33). The inner side of the forward arc section (33) is connected to an arch section (34).

9. The outdoor dual-purpose stove according to claim 1, characterized in that: The air baffle (8) is composed of a plurality of baffles (81), with gaps formed between adjacent baffles for gas to pass through.

10. The outdoor dual-purpose stove according to claim 9, characterized in that: The baffle (81) includes a middle baffle and a side baffle, wherein the middle baffle is arranged horizontally and the side baffles are arranged downwardly from the inner wall of the furnace.

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