Direct injection type high-heat-intensity blue light infrared gas appliance

Abstract

The utility model discloses a direct injection type high-heat-intensity blue light infrared gas appliance which comprises a combustion part, the combustion part comprises a furnace body and an injection pipe which are communicated with each other, a premixing adjusting plate matched with the furnace body is fixedly connected in the furnace body, and the premixing adjusting plate is arranged above the injection pipe; the flame stabilizing piece is arranged at the end, away from the injection pipe, of the furnace body. The ignition part is arranged in the furnace body, and an ignition positive electrode of the ignition part penetrates through and is exposed out of the flame stabilizing part; the nozzle piece is connected with one end of the injection pipe away from the furnace body. According to the gas appliance provided by the utility model, the premixing adjusting plate can prolong a premixing path and adjust the distribution effect of mixed gas, so that the axial length of the injection pipe and the radial size of the furnace chamber are effectively shortened, and uniform combustible mixed gas is efficiently formed; the built-in ignition part distributes most of fuel gas in most area of the middle area of the flame stabilizing part to form infrared combustion, and the outer edge part forms atmospheric combustion of blue flame and micro flame, so that efficient combustion and high heat intensity of the combustor are realized, the size of a gas appliance is effectively reduced, and the gas appliance is more portable.

Description

Technical Field

[0001] This utility model relates to the field of gas combustion technology, and in particular to a direct-injection high-heat-intensity blue infrared gas appliance. Background Technology

[0002] Gas burners typically include atmospheric burners and infrared burners. Atmospheric burners are widely known due to their high prevalence, while infrared burners have received increasing attention in recent years due to their high efficiency, energy saving, and environmentally friendly low-carbon characteristics. However, currently, infrared burners are too large, have relatively complex structures, and their manufacturing costs are much higher than atmospheric burners, which greatly limits their widespread application. Reports indicate that the current penetration rate of infrared household stoves is only 3%, indicating a huge market potential. Therefore, it is essential to develop infrared burners that are small in size, simple in structure, and have high heat intensity. Secondly, there is a significant increase in the frequency of outdoor camping activities, leading to a surge in demand for outdoor gas appliances. However, current outdoor infrared gas appliances still fail to adequately meet user experience needs, mainly in the following ways:

[0003] 1. Low heat intensity requires increasing the area of ​​the burner holes to increase the heat load to meet the rapid heat dissipation environment of outdoor cooking. Therefore, outdoor stoves need to be larger, but the large size poses a great challenge to cost control and portability.

[0004] 2. Currently, the area heat intensity of household gas infrared burners is approximately 140-200 kW / ㎡, while the maximum heat intensity of outdoor infrared portable gas stoves is approximately 300 kW / ㎡. This means that, based on the above heat intensity, to achieve a moderate heat load of 3 kW for outdoor applications, the effective combustion surface of the burner would need to be approximately Φ113-Φ165, and the burner size would need to be approximately Φ123-Φ175. This area also needs to take into account the size of the stove, which is not easily acceptable for outdoor gas appliances.

[0005] 3. High-heat-intensity infrared burners are prone to backfire, especially in the field of high-pressure outdoor camping stoves, where the gas pressure is often as high as 100,000 or even 1 million Pa. Moreover, due to the large pressure fluctuations of disposable gas cylinders as gas is consumed and vaporization and cooling occur, high-heat-intensity infrared burners are made to adapt to the premise of extremely large gas pressure fluctuations. In order to prevent backfire, the conventional structure is relatively complex, and the height of the burner's furnace chamber must also be increased, so the volume is also very large.

[0006] 4. High heat intensity means that more gas combustion reactions are completed per unit burner area, which means that the probability of incomplete combustion of gas increases, leading to a sharp increase in CO concentration in flue gas. Large changes in gas pressure can also lead to deterioration of operating conditions under certain pressures, resulting in increased CO.

[0007] 5. High heat intensity and small head area will cause the gas flow rate to increase sharply. When igniting in a cold state, the high-speed airflow will carry away the heat, making it difficult to reach the ignition point of the gas and causing ignition failure. Current technology usually uses open flame and adds atmospheric ignition burners to achieve this, but it is not very friendly to the size and cost of the stove.

[0008] 6. Although the current product's wind resistance meets technical standards and has a good effect, it cannot compensate for the deterioration of heating and ignition performance caused by strong outdoor winds. Moreover, it may even require the addition of windproof components, which will increase costs and reduce portability.

[0009] In view of this, it is necessary to propose further improvements to the current structure. Utility Model Content

[0010] Therefore, the purpose of this utility model is to at least partially solve the shortcomings of the prior art, thereby proposing a direct-injection high-heat-intensity blue infrared gas appliance.

[0011] To achieve the above objectives, the present invention adopts the following technical solution:

[0012] This utility model provides a direct-injection high-intensity blue infrared gas appliance, comprising:

[0013] The combustion element includes a furnace body and an ejector tube that are interconnected. A premixing adjustment plate adapted to the furnace body is fixedly connected to the furnace body. The premixing adjustment plate is disposed above the ejector tube. The ejector tube is provided with multiple air inlets.

[0014] A flame stabilizer is provided at one end of the furnace body away from the ejector tube, and the flame stabilizer is disposed opposite to the premixing adjustment plate. An ignition ground electrode is also provided on the flame stabilizer.

[0015] An ignition element is disposed inside the furnace body, and the ignition element further includes an ignition positive electrode, which is disposed through and exposed outside the flame stabilizer, and the ignition positive electrode and the ignition ground electrode are disposed close to each other.

[0016] A nozzle assembly connected to the end of the ejector tube furthest from the furnace body.

[0017] Furthermore, the furnace body includes a first cavity and a second cavity that are connected to each other. A through hole is opened at the center of the second cavity near the ejector tube. The second cavity is connected to the ejector tube through the through hole, and the position of the through hole corresponds to the center of the premixing adjustment plate. A plurality of first connectors are evenly distributed around the through hole, and the through holes are connected to a plurality of support members of the premixing adjustment plate. A plurality of guide holes are also evenly distributed on the edge of the premixing adjustment plate.

[0018] Furthermore, a supporting step is provided on the inner sidewall of the first cavity, and the flame stabilizer is closely attached to the supporting step. The flame stabilizer is in contact with the inner sidewall of the first cavity. The flame stabilizer is provided with multiple flame holes, the size of which is larger than the size of the ignition positive electrode. The ignition positive electrode passes through the flame holes and is exposed outside the flame stabilizer. The flame stabilizer is made of porous insulating refractory material.

[0019] Furthermore, the ejector tube includes a third cavity and a fourth cavity that are connected to each other. The inner wall of the fourth cavity is provided with a connecting thread for connecting the nozzle component. The third cavity is connected to the second cavity through the through hole, and a plurality of air inlets are provided through the outer wall of the third cavity near the fourth cavity. The first cavity, the second cavity, the third cavity and the fourth cavity are interconnected, and the cross-sectional dimensions of the first cavity, the second cavity, the third cavity and the fourth cavity increase sequentially from the fourth cavity to the first cavity.

[0020] Furthermore, a decorative ring is also provided on the flame stabilizer. The decorative ring includes a first decorative ring and a second decorative ring connected to each other. The first decorative ring is disposed on the flame stabilizer, and the second decorative ring is sleeved on the outer wall of the furnace body. A positioning notch is provided on the side of the second decorative ring away from the first decorative ring. A positioning boss is provided on the outer wall of the furnace body. The positioning notch is adapted to be inserted into the positioning boss. Two ignition ground electrodes are provided on the side of the first decorative ring near the positioning notch. An ignition positive electrode is also provided between the two ignition ground electrodes. The ignition positive electrode and the two ignition ground electrodes are respectively disposed on the edge of the flame stabilizer.

[0021] Furthermore, a mounting hole is also provided on one side of the furnace body where the through hole is provided. The ignition element is installed in the furnace body through the mounting hole. One end of the ignition element near the flame stabilizer is connected to the ignition positive electrode, and the other end is provided with a terminal block. The terminal block is connected to a piezoelectric ceramic element.

[0022] Furthermore, the nozzle component includes a nozzle seat, one side of which is vertically screwed into the fourth cavity and also provided with a nozzle. The side of the nozzle seat away from the fourth cavity is provided with an air inlet pipe mounting hole, and an air pipe control valve assembly is connected through the air inlet pipe mounting hole.

[0023] Furthermore, the ejector tube has a first step on the outer wall near the nozzle seat, and the ejector tube also has a first positioning plane and a first mounting thread on the outer wall near the first step; the ejector tube also has a second step on the side near the furnace body, and the ejector tube also has a second positioning plane and a second mounting thread on the outer wall near the second step.

[0024] Furthermore, it also includes a multi-axis folding furnace frame, in which the combustion element is inserted. The multi-axis folding furnace frame includes a base and multiple support components. The multiple support components are uniformly connected to the base through a second connector. Each support component rotates relative to the base through a corresponding second connector, so that the support component unfolds to support the base or folds and retracts onto the base. The base has a combustion element mounting hole and a clearance hole. The ejector tube is inserted into the combustion element mounting hole, and the ignition element is disposed in the clearance hole. The first step abuts against the base. A positioning straight edge is provided in the combustion element mounting hole, and the positioning straight edge is adapted to the first positioning plane.

[0025] Furthermore, the ejector tube is connected to a tracheal guide plate with a tracheal clearance notch. A fixing member is connected to the first mounting thread, and the tracheal guide plate is abutted against the base through the fixing member. An adjusting member is also connected to the first mounting thread, and the adjusting member is also connected to the nozzle seat, so as to drive the air inlet mounting hole on the nozzle seat to correspond to the tracheal clearance notch.

[0026] This utility model provides a direct-injection high-intensity blue infrared gas appliance, comprising: a combustion element, which includes a furnace body and an injector tube connected to each other; a premixing adjustment plate adapted to the combustion element is fixedly connected to the furnace body; the premixing adjustment plate is disposed above the injector tube; the injector tube is provided with multiple air inlets; a flame stabilizer, which is disposed at the end of the furnace body away from the injector tube and is disposed opposite to the premixing adjustment plate; the flame stabilizer is also provided with an ignition ground electrode; an ignition element, which is disposed in the furnace body and includes an ignition positive electrode, which is disposed through and exposed outside the flame stabilizer; the ignition positive electrode and the ignition ground electrode are disposed close to each other; and a nozzle, which is connected to the end of the injector tube away from the furnace body. The gas appliance provided by this utility model injects high-pressure gas vertically upwards into the injector tube through the nozzle. The pressure difference draws air in from multiple air inlets perpendicular to the gas flow direction and into the furnace cavity. The premixing adjustment plate set in the center of the furnace cavity can extend the premixing path and adjust the distribution of the mixed gas, effectively shortening the axial length of the injector tube and the radial dimension of the furnace cavity. It efficiently forms a uniform combustible gas mixture, which reaches the surface of the flame stabilizer at the burner head. The gas is then ignited by the built-in ignition element. Most of the gas is distributed in the central area of ​​the flame stabilizer to form infrared combustion, while atmospheric combustion with a blue flame is formed at the outer edge. This achieves efficient combustion and high heat intensity of the burner, effectively reducing the size of the appliance and making it more portable. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model.

[0029] Figure 2 This is a cross-sectional view of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model;

[0030] Figure 3 This is a cross-sectional view of the combustion element of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model.

[0031] Figure 4 This is a schematic diagram of the premixing adjustment plate of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model.

[0032] Figure 5 This is a schematic diagram of the gas pipe orientation plate of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model.

[0033] Figure 6 This is a structural breakdown diagram of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model, which is installed in a multi-axis folding furnace frame.

[0034] Figure 7 This is a schematic diagram of the base of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model;

[0035] Figure 8 This is a schematic diagram of the unfolded structure of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model, mounted on a multi-axis folding furnace frame.

[0036] Figure 9 This is a schematic diagram of the structure of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model, which is partially folded on a multi-axis folding furnace frame.

[0037] Figure 10 This is a schematic diagram of the structure of the direct-injection high-heat-intensity blue infrared gas appliance of this utility model after being fully folded on a multi-axis folding furnace frame.

[0038] The reference numerals in the figure are as follows: 1. Combustion component; 11. Furnace body; 111. First cavity; 1111. Support step; 112. Second cavity; 1121. Through hole; 1122. First connector; 1123. Mounting hole; 113. Positioning boss; 12. Injector tube; 121. Third cavity; 1211. Air inlet; 122. Fourth cavity; 1221. Connecting thread; 123. First step; 1231. First positioning plane; 1232. First mounting thread; 124. Second step; 1241. Second positioning plane; 1242. Second mounting thread; 125. Fixing component; 126. Adjusting component; 2. Flame stabilizer; 3. Ignition component; 31. Ignition... 32. Positive electrode; 4. Terminal block; 5. Nozzle assembly; 6. Nozzle seat; 7. Nozzle; 8. Inlet pipe mounting hole; 9. Gas pipe control valve assembly; 10. Premixing adjustment plate; 11. Support component; 12. Guide hole; 13. Decorative ring; 14. First decorative ring; 15. Ignition ground electrode; 16. Second decorative ring; 17. Piezoelectric ceramic component; 18. Multi-axis folding furnace frame; 19. Base; 10. Combustion component mounting hole; 11. Positioning straight edge; 12. Clearance hole; 13. Support assembly; 14. Support component; 15. Bracket component; 16. Rotation limit hole; 17. Positioning hole; 18. Second connector; 19. Gas pipe orientation plate; 10. Gas pipe clearance notch. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0041] Please refer to Figures 1 to 10 This utility model provides a direct-injection high-intensity blue infrared gas appliance, comprising:

[0042] Combustion component 1 includes a furnace body 11 and an ejector tube 12 that are interconnected. A premixing regulating plate 6 that is adapted to it is fixedly connected inside the furnace body 11. Multiple air inlets 1211 are provided on the ejector tube 12.

[0043] Flame stabilizer 2 is located at the end of the furnace body 11 away from the ejector tube 12, and the flame stabilizer 2 is positioned opposite to the premixing adjustment plate 6. The flame stabilizer 2 is also provided with an ignition ground electrode 711.

[0044] Ignition element 3 is disposed inside furnace body 11, and ignition element 3 also includes ignition positive electrode 31, ignition positive electrode 31 is disposed through and exposed in flame stabilizer 2, and ignition positive electrode 31 and ignition ground electrode 711 are disposed close to each other.

[0045] Nozzle component 4 is connected to the end of ejector tube 12 away from furnace body 11.

[0046] In this embodiment, the combustion element 1 includes a furnace body 11 and an ejector tube 12 that are interconnected. The furnace body 11 and the ejector tube 12 are connected as a single piece. The connection method between the furnace body 11 and the ejector tube 12 is not limited here and is set according to the actual production method.

[0047] In this embodiment, a flame stabilizer 2 is provided at the end of the furnace body 11 away from the injector tube 12. The size of the flame stabilizer 2 is adapted to the size of the furnace body 11, so that the flame stabilizer 2 can be fixedly connected inside the furnace body 11. An ignition element 3 is also provided inside the furnace body 11. An ignition positive electrode 31 is provided on the ignition element 3, which penetrates through the flame stabilizer 2 and is exposed outside the flame stabilizer 2. An ignition ground electrode 711 is also provided on the flame stabilizer 2. The ignition ground electrode 711 and the ignition positive electrode 31 are arranged close to each other, so that the ignition ground electrode 711 and the ignition positive electrode 31 can discharge and ignite the combustible gas mixture that flows from the injector tube 12 to the furnace body 11 and then to the surface of the flame stabilizer 2. A nozzle 4 is also connected to the end of the injector tube 12 away from the furnace body 11, so that high-pressure gas can be injected vertically upward from the nozzle 4 into the injector tube 12. The ignition ground electrode 711 is an electrical ground electrode.

[0048] Specifically, a premixing regulating plate 6 is fixedly connected inside the furnace body 1, and the premixing regulating plate 6 is positioned above the ejector tube 12. The ejector tube 12 has multiple air inlets 1211. When high-pressure gas is injected into the ejector tube 12, air is drawn in from the air inlets 1211 perpendicular to the gas flow direction using the pressure difference. The high-pressure gas and air mix in the ejector tube 12 and the furnace body 11. When the gas enters the furnace body 11 through the ejector tube 12, the front of the premixing regulating plate 6 positioned above the ejector tube 12 blocks most of the mixed gas, preventing it from entering the furnace body 11. Instead, it reflects back into the ejector tube 12, creating a vertical airflow collision. This further improves the uniformity of the mixed gas in the ejector tube 12. Simultaneously, the airflow vertically upward from the ejector tube 12, along the axial direction of the furnace body 11, is affected by the premixing regulating plate. The gas flow is blocked by the front of the premixing plate 6 and changes its path to flow and diffuse in the radial direction of the furnace body 11. After the radial airflow hits the inner wall of the furnace body 11, it is partially reflected. The reflected and rebounded gas continues to mix with the forward gas. The mixed gas finally enters the space between the flame stabilizer 2 and the premixing plate 6 through the gap between the premixing plate 6 and the inner wall of the furnace body 11. Finally, through the homogenization effect of the flame stabilizer 2 and each mixed airflow, a uniform combustible gas is formed and reaches the surface of the flame stabilizer 2. That is, the premixing adjustment effect of the premixing plate 6 is equivalent to extending the diffusion mixing path, so that the gas and air are more fully mixed. This can greatly shorten the length of the ejector tube 12 and also reduce the size of the end of the furnace body 11 where the flame stabilizer 2 is set. The overall volume is also greatly reduced, thereby greatly improving the heat intensity.

[0049] Specifically, high-pressure gas is injected vertically upward from nozzle 4 into ejector tube 12. Air is drawn in from air inlet 1211, which is perpendicular to the gas flow direction of ejector tube 12, using the pressure difference. High-pressure gas and air mix in ejector tube 12 and enter furnace chamber 11 vertically. The premixing adjustment plate 6, fixed inside furnace chamber 11, extends the premixing path and adjusts the distribution of mixed gas, effectively shortening the axial length of ejector tube 12 and the radial dimension of furnace chamber 11. This efficiently forms a uniform combustible gas mixture, which reaches the surface of flame stabilizer 2 at the head of furnace body 11. At the same time, the airflow at the edge is slightly greater than that in the middle. The gas is ignited by an electric arc through the positive ignition electrode 31 of ignition element 3 built into furnace body 11 and the ground ignition electrode 711 on the surface of flame stabilizer 2. Most of the gas is distributed in the middle area of ​​flame stabilizer 2 to form infrared combustion, while atmospheric combustion with blue flames forms at the outer edge. This achieves efficient combustion and high heat intensity of the burner, effectively reducing the size of the appliance and making it more portable.

[0050] The nozzle 4 is vertically positioned below the ejector tube 12, allowing high-pressure gas to be vertically injected into the ejector tube 12 through the nozzle 4. The nozzle 4 is vertically positioned and far from the high-temperature plane of the flame stabilizer 2, and an air inlet 1211 is provided at the ejector tube 12, which allows the nozzle 4 to be continuously cooled, resulting in a low temperature rise and minimizing the risk of backfire.

[0051] Furthermore, the furnace body 11 includes a first cavity 111 and a second cavity 112 that are connected to each other. A through hole 1121 is opened at the center of the side of the second cavity 112 near the ejector tube 12. The second cavity 112 is connected to the ejector tube 12 through the through hole 1121. The position of the through hole 1121 corresponds to the center of the premixing adjustment plate 6. A plurality of first connectors 1122 are evenly distributed around the through hole 1121 and are connected to a plurality of support members 61 on the premixing adjustment plate 6 through the plurality of first connectors 1122. A plurality of guide holes 62 are also evenly distributed on the edge of the premixing adjustment plate 6.

[0052] In this embodiment, the interior of the furnace body 11 includes a first cavity 111 and a second cavity 112 that are interconnected. The cross-sectional dimension of the first cavity 111 is larger than that of the second cavity 112. A through hole 1121 is provided on the side of the second cavity 112 near the ejector tube 12, and the second cavity is connected to the ejector tube 12 through the through hole 1121, thereby making the first cavity 111, the second cavity 112 and the ejector tube 12 of the furnace body 11 interconnected. The through hole 1121 is located at the central axis of the second cavity 112, and a plurality of first connectors 1122 are evenly distributed around the through hole 1121. A premixing adjustment plate 6 adapted to the shape of the furnace cavity 11 is provided above the first connectors 1122. A plurality of support members 61 are evenly provided on the bottom of the premixing adjustment plate 6, and the premixing adjustment plate 6 is connected to the first connectors 1122 through the multiple support members 61, so that the premixing adjustment plate 6 is fixedly connected to the furnace body 11, that is, the center position of the premixing adjustment plate 6 is also the position of the through hole 1121.

[0053] Specifically, the edge of the premixed regulating plate 6 is provided with multiple evenly distributed guide holes 62, while the middle part above the through hole 1121 is not provided with guide holes. This allows the mixed gas in the ejector tube 12 to not only enter the space between the flame stabilizer 2 and the premixed regulating plate 6 through the gap between the premixed regulating plate 6 and the inner wall of the furnace body 11, but also enter the space between the flame stabilizer 2 and the premixed regulating plate 6 through the guide holes 62 provided on the premixed regulating plate 6. Finally, through the homogenization effect of the flame stabilizer 2 and each mixed gas flow interpenetrating with each other, a uniform combustible gas is formed and reaches the surface of the flame stabilizer 2. The combustible gas is ignited by the electric arc generated between the ignition positive electrode 31 and the ignition ground electrode 711.

[0054] The number of first connectors 1122 and support members 61 is the same, which is 4 in this embodiment, and the first connector 1122 is specifically a rivet.

[0055] Furthermore, a support step 1111 is provided on the inner side wall of the first cavity 111. A flame stabilizer 2 is closely attached to the support step 1111 and abuts against the inner side wall of the first cavity 111. The flame stabilizer 2 is provided with multiple flame holes. The size of the flame holes is larger than the size of the ignition positive electrode 31. The ignition positive electrode 31 passes through the flame holes and is exposed outside the flame stabilizer 2. The material of the flame stabilizer 2 is a porous insulating refractory material.

[0056] In this embodiment, the flame stabilizer 2 is provided with multiple flame holes, and the inner wall of the first cavity 111 is provided with a support step 1111. The flame stabilizer 2 is tightly installed on the support step 1111. The support step 1111 is a flat horizontal surface, and the size of the flame stabilizer 2 is adapted to the cross-sectional size of the first cavity 111. This allows the flame stabilizer 2 to be tightly abutted against the inner wall of the first cavity 111, thereby ensuring the sealing of the flame stabilizer 2 and ensuring that the mixed combustible gas will not leak out from the side of the flame stabilizer 2, but will only reach the head surface of the combustion element 1 through the flame holes of the flame stabilizer 2.

[0057] In this embodiment, the flame stabilizing element 2 has a flame hole slightly larger than the size of the ignition positive electrode 31, so that the ignition positive electrode 31 can pass through the flame hole and be exposed outside the flame hole. Since the flame stabilizing element 2 is provided with an ignition ground electrode 711, the ignition positive electrode 31 needs to be exposed outside the flame hole, so that the ignition positive electrode 31 can generate an electric arc with the ignition ground electrode 711 to ignite the combustible gas on the surface of the flame stabilizing element 2. In this embodiment, the flame stabilizing element 2 is made of a porous insulating refractory material, which is a non-conductive insulating material and also a refractory material, which can prevent short circuit between the ignition positive electrode 31 and the ignition ground electrode 711.

[0058] Furthermore, the ejector tube 12 includes a third cavity 121 and a fourth cavity 122 that are connected to each other. The inner wall of the fourth cavity 122 is provided with a connecting thread 1221 for connecting the nozzle component 4. The third cavity 121 is connected to the second cavity 112 through a through hole 1121, and multiple air inlets 1211 are provided through the outer wall of the third cavity 121 near the fourth cavity 122. The first cavity 111, the second cavity 112, the third cavity 121 and the fourth cavity 122 are interconnected, and the cross-sectional dimensions of the first cavity 111, the second cavity 112, the third cavity 121 and the fourth cavity 122 increase sequentially from the fourth cavity 122 to the first cavity 111.

[0059] In this embodiment, the ejector tube 12 includes a third cavity 121 and a fourth cavity 122, which are interconnected. The third cavity 121 is connected to the second cavity 112 through a through hole 1121, thereby enabling the first cavity 111, the second cavity 112, the third cavity 121, and the fourth cavity 122 to be interconnected. The cross-sectional dimensions of the first cavity 111, the second cavity 112, the third cavity 121, and the fourth cavity 122 increase sequentially from the fourth cavity 122 to the first cavity 111, i.e., the size of the first cavity 111 is greater than the size of the second cavity 112, which is greater than the size of the third cavity 121, which is greater than the size of the fourth cavity 122.

[0060] Multiple air inlets 1211 are provided through the outer wall of the third cavity 121 near the fourth cavity 122, allowing air to enter through the air inlets 1211. The inner wall of the fourth cavity 122 is provided with connecting threads 1221, allowing the nozzle 4 to be screwed on. When high-pressure gas is injected from the nozzle 4 into the ejector tube 12, it sequentially enters the fourth cavity 122, the third cavity 121, the second cavity 112, and the first cavity 111, with progressively increasing cross-sectional dimensions. Simultaneously, the pressure difference draws air in through the air inlets 1211 of the third cavity 121. When the mixed gas in the third cavity 121 enters the second cavity 112 through the through-hole 1121, it is premixed above the through-hole 1121. The regulating plate 6 obstructs the flow of most of the mixed gas, causing it to be reflected into the third cavity 121. This creates a vertical counter-current in the airflow, further improving the uniformity of the mixture. Simultaneously, the upward vertical airflow along the second cavity 122 is obstructed by the front of the horizontal premixing regulating plate 6, causing it to change its path and diffuse radially into the furnace cavity. The radial airflow impacts the inner wall of the second cavity 122, resulting in partial reflection. The reflected rebound gas continues to mix with the forward gas. The mixed gas eventually enters the space between the flame stabilizer 2 and the premixing regulating plate 6 (i.e., inside the second cavity 122) through the guide hole 62 and the gap between the premixing regulating plate 6 and the side wall of the second cavity 122, and finally reaches the surface of the flame stabilizer 2 located in the first cavity 111.

[0061] Furthermore, a decorative ring 7 is also provided on the flame stabilizer 2. The decorative ring 7 includes a first decorative ring 71 and a second decorative ring 72 that are connected to each other. The first decorative ring 71 is provided on the flame stabilizer 2, and the second decorative ring 72 is fitted on the outer wall of the furnace body 11. A positioning notch is provided on the side of the second decorative ring 72 away from the first decorative ring 71. A positioning boss 113 is provided on the outer wall of the furnace body 11. The positioning notch is adapted to be inserted into the positioning boss 113. Two ignition ground electrodes 711 are provided on the side of the first decorative ring 71 near the positioning notch. An ignition positive electrode 31 is also provided between the two ignition ground electrodes 711. The ignition positive electrode 31 and the two ignition ground electrodes 711 are respectively provided on the edge of the flame stabilizer 2.

[0062] In this embodiment, a decorative ring 7 is placed on the flame stabilizer 2. The decorative ring 7 includes a first decorative ring 71 and a second decorative ring 72, which are integrally formed. Specifically, the first decorative ring 71 is placed on the surface of the flame stabilizer 2, and the second decorative ring 72 is fitted onto the outer wall of the first cavity 111 of the furnace body 11. A positioning notch is provided at the bottom of the second decorative ring 72, and a positioning boss 113 is provided on the outer wall of the first cavity 111. The positioning notch of the second decorative ring 72 is adapted to the size of the positioning boss 113, so that the second decorative ring 72 can wrap around the positioning boss 113 downwards. Two ignition ground electrodes 711 are provided on the side of the first decorative ring 71 near the positioning notch, and an ignition positive electrode 31 is provided between the two ignition ground electrodes 711, so that an electric arc can be generated between the ignition positive electrode 711 and the ignition positive electrode 31.

[0063] The ignition ground electrode 711 is positioned on the side close to the positioning notch to ensure that when the positioning notch is inserted into the positioning boss 113, the ignition positive electrode 31 is positioned exactly in the middle of the two ignition ground electrodes 711 on the first decorative ring 71 and to ensure a reasonable discharge distance. Moreover, the discharge arc of the ignition ground electrode 711 and the ignition positive electrode 31 passes horizontally through the inner flame of the flame stabilizer 2.

[0064] Specifically, the positions of the ignition positive electrode 31 and the ignition ground electrode 711 are located at the edge of the flame stabilizer 2, thus forming an atmospheric combustion position. When the ignition positive electrode 31 discharges, the spark passes through the inner flame of the flame, resulting in a very high ignition success rate. This successfully solves the problem that ignition failure occurs when the high-speed airflow carries away heat during cold ignition, making it difficult to reach the ignition point of the gas.

[0065] Furthermore, a mounting hole 1123 is also provided on one side of the furnace body 11 where the through hole 1121 is provided. That is, the through hole 1121 and the mounting hole 1123 are set on the same plane. The ignition element 3 is set in the furnace body 11 through the mounting hole 1123. One end of the ignition element 3 near the flame stabilizer 2 is connected to the ignition positive electrode 31. The tip of the ignition positive electrode 31 is exposed in the flame hole of the flame stabilizer 2 so that it can generate an electric arc with the ignition ground electrode 711. The other end is provided with a terminal 32, and the terminal 32 is also exposed in the furnace body 11, so that the terminal 32 can be connected to the piezoelectric ceramic element 8. The instantaneous high voltage generated by the piezoelectric ceramic element 8 can generate two electric spark discharges of sufficient intensity between the ignition positive electrode 31 and the ignition ground electrode 711.

[0066] Specifically, the ignition positive electrode 31 is the ignition needle.

[0067] Furthermore, the nozzle component 4 includes a nozzle seat 41, one side of which is vertically screwed into the fourth cavity 122 and also provided with a nozzle 42. The side of the nozzle seat 41 away from the fourth cavity 122 is provided with an air inlet pipe mounting hole 431, and an air pipe control valve assembly 5 is connected through the air inlet pipe mounting hole 431.

[0068] In this embodiment, the air pipe control valve assembly 5 can be connected to a high-altitude air pipe, or it can be equipped with an adapter to connect to other air sources, or it can use a dedicated control valve for other air sources. The air source enters the nozzle seat 41 through the air pipe control valve assembly 5, and is sprayed vertically upward into the fourth cavity 122 of the ejector tube 12 through the nozzle 42 connected to the nozzle seat 41, and then vertically upward until it reaches the surface of the flame stabilizer 2.

[0069] Furthermore, the outer wall of the ejector tube 12 near the nozzle seat 41 is provided with a first step 123, and the outer wall of the ejector tube 12 near the first step 123 is also provided with a first positioning plane 1231 and a first mounting thread 1232; the side of the ejector tube 12 near the furnace body 11 is also provided with a second step 124, and the outer wall of the ejector tube 12 near the second step 124 is also provided with a second positioning plane 1241 and a second mounting thread 1242.

[0070] In this embodiment, the ejector tube 12 is provided with a first step 123 and a second step 124 from bottom to top. A first positioning plane 1231 and a first mounting thread 1232 are provided on the outer wall of the ejector tube 12 near the lower position of the first step 123. A second positioning plane 1241 and a second mounting thread 1242 are provided on the outer wall of the ejector tube 12 near the lower position of the second step 124. The first mounting thread 1232, the second mounting thread 1242, the first positioning plane 1231, and the second positioning plane 1241 are respectively provided on both sides of the ejector tube 12. The first positioning plane 1231 and the second positioning plane 1241 are provided on the side near the mounting hole 1123 of the ignition element 3.

[0071] The burner features a two-level horizontal step 123 and a second step 124. The first step 123 is located on the side of the ejector tube 12 near the nozzle 4, while the second step 124 is located on the side of the ejector tube 12 near the furnace body 11, situated at the upper and lower ends of the outer wall of the ejector tube 12. The first mounting thread 1232 and the second mounting thread 1242 below the first step 123 and the second step 124 are of two different specifications. The nominal diameter of the first mounting thread 1232 is smaller than the nominal diameter of the second mounting thread 1242. This allows the burner to be suitable for installation on furnace frames with different structures, thus broadening its application range.

[0072] Furthermore, it also includes a multi-axis folding furnace frame 9, in which the combustion element 1 is inserted. The multi-axis folding furnace frame 9 includes a base 91 and multiple support components 92. The multiple support components 92 are evenly connected to the base 91 through a second connector 93. Each support component 92 rotates relative to the base 91 through a corresponding second connector 93, so that the support component 92 unfolds to support the base 91 or folds and retracts onto the base 91. A combustion element mounting hole 911 and a clearance hole 912 are provided on the base 91. The ejector tube 12 is inserted into the combustion element mounting hole 911, and the ignition element 3 is disposed in the clearance hole 912. The first step 123 abuts against the base 91. A positioning straight edge 9111 is provided in the combustion element mounting hole 911, and the positioning straight edge 9111 is adapted to the first positioning plane 1231.

[0073] In this embodiment, the combustion element 1 is inserted into the multi-axis folding furnace frame 9. The multi-axis folding furnace frame 9 includes a base 91 and multiple support components 92. The multiple support components 92 are evenly spaced and connected to the base 91. Specifically, there are four support components 92 in this embodiment, and the support components 92 are spaced 90° apart.

[0074] Specifically, each support component 92 is connected to the base 91 via a second connector 93, and each support component 92 can rotate relative to the base 91 via the second connector 93. The base 91 also has a rotation limiting hole 913. When the support component 92 rotates relative to the base 91, the support component 92 will drive the second connector 93 to rotate within the rotation limiting hole 913, thereby causing the support component 92 to unfold or fold relative to the base 91. When multiple support components 92 are unfolded relative to the base 91, a stove can be placed on multiple support components 92. After the stove is used, the multiple support components 92 are rotated in the opposite direction relative to the base 91, thereby folding the multiple support components 92 to be stored on the base 91. Multiple support components 92 are set on the base 91, which can be rotated to unfold for use or folded for storage. This makes the multi-axis folding stove frame small in folding volume, large in unfolding support surface and stable in structure. It is simple and convenient to unfold and fold, and suitable for use in various outdoor scenarios. Moreover, the multi-axis folding stove frame 9 has a simple structure and low manufacturing cost, making it suitable for large-scale promotion and use.

[0075] Specifically, the support assembly 92 includes a support member 921 and a bracket member 922. Both the support member 921 and the bracket member 922 have vertically upward-facing planes. The support member 921 supports the ground, and multiple support members 921 of the support assembly can support the multi-axis folding stove frame on the ground. The bracket member 922 supports the stove, which can be placed on the bracket member 922 of the multiple support assemblies. The second connecting member 93 includes a first right-angled side and a second right-angled side. The first right-angled side is rotatably connected to the base 91. The support member 921 and the bracket member 922 are connected to both sides of the second right-angled side by a rivet, and the support member 921 and the bracket member 922 can rotate relative to each other, allowing the support member 921 and the bracket member 922 to move closer to or further away from the base 91.

[0076] The adjacent ends of the support member 921 and the bracket member 922 are rotatably connected to the second connector 93, while the opposite ends are used to support the ground and the stove, respectively. When the opposite ends of the two move away from the base 91, the adjacent ends of the support member 921 and the bracket member 922 will abut against the base 91, while the adjacent ends of the bracket member 922 and the support member 921 will be inserted into the positioning hole 914, thereby making the support member 921 and the bracket member 922 more stable.

[0077] When the support assembly 92 rotates relative to the base 91, the support member 921 and the bracket member 922 can be unfolded or folded relative to each other. When the support member 921 and the support bracket 922 are unfolded, the support member 921 is used to support the ground, and the bracket member 922 is used to support the stove, so that the burner 1 can be used.

[0078] In this embodiment, the base 91 is provided with a combustion element mounting hole 911 and a clearance hole 912. The ejector tube 12 is inserted into the combustion element mounting hole 911, and the ignition element 3 is disposed in the clearance hole 912.

[0079] In this embodiment, the first step 123 of the ejector tube 12 is disposed in the multi-axis folding furnace frame 9. Specifically, the ejector tube 12 is inserted into the combustion element mounting hole 911, and the first step 123 is in close contact with the base 91. The first positioning plane 1231 is in contact with the positioning straight edge 9111 in the combustion element mounting hole 911, so that the ignition element 3 can be coaxial with the vent hole 912.

[0080] Furthermore, the ejector tube 12 is connected to a tracheal guide plate 10 with a tracheal clearance notch 101. A fixing member 125 is connected to the first mounting thread 1232, and the tracheal guide plate 10 is abutted against the base 91 by the fixing member 125. An adjusting member 126 is also connected to the first mounting thread 1232, and the adjusting member 126 is also connected to the nozzle seat 41, so as to drive the air inlet pipe mounting hole 43 on the nozzle seat 41 to correspond to the tracheal clearance notch 101.

[0081] In this embodiment, the gas tube orientation plate 10 is disposed on the ejector tube 12, and the gas tube orientation plate 10 is fixedly disposed at the bottom of the combustion component mounting hole 911 by the fixing member 125 screwed to the first mounting thread 1232. This can securely fix the combustion component 1 while protecting the ignition component 3 from being broken by the torque generated by the random rotation of the thread.

[0082] An adjusting member 126 is also screwed onto the first mounting thread 1232. The adjusting member 126 is also connected to the nozzle seat 41. When the nozzle seat 41 is adjusted by the thread, the air inlet pipe mounting hole 43 can be aligned with the air pipe clearance notch 101, thereby allowing the air pipe control valve assembly 5 to be installed into the air inlet pipe mounting hole 43 and pass through the air pipe clearance notch 101. The air pipe mounting plate 10 includes a vertical folded edge, and the air pipe clearance notch 101 is provided on the vertical folded edge.

[0083] Furthermore, the specific operating steps of this direct-injection high-intensity blue infrared gas appliance are as follows:

[0084] When the gas appliance is needed, the support component 92 on the multi-axis folding furnace frame 9 is rotated relative to the base 91, thereby unfolding relative to the base 91 and supporting the base 91.

[0085] At this time, high-pressure gas enters the nozzle 41 from the gas pipe control valve assembly 5. When the high-pressure gas is injected into the ejector tube 12 through the nozzle 41, air is drawn in from the air inlet 1211 perpendicular to the gas flow direction by the pressure difference. The high-pressure gas and air mix in the ejector tube 12 and the furnace body 11. When the gas enters the furnace body 1 through the ejector tube 12, the front of the premixing regulating plate 6 located above the ejector tube 12 will block most of the mixed gas, preventing it from entering the furnace body 11. Instead, it will reflect into the ejector tube 12, creating a vertical countercurrent in the airflow. This further improves the uniformity of the mixed gas in the ejector tube 12. At the same time, the airflow vertically upward from the ejector tube 12, i.e., along the axial direction of the furnace body 11, changes its path and diffuses radially into the furnace body 11 due to the obstruction of the front of the premixing regulating plate 6. After the gas flows into the inner wall of the furnace body 11, it is partially reflected. The reflected gas continues to mix with the incoming gas. The mixed gas eventually enters the space between the flame stabilizer 2 and the premixing plate 6 through the gap between the premixing regulating plate 6 and the inner wall of the furnace body 11. Finally, through the homogenization effect of the flame stabilizer 2 and the mixed gas flow, a uniform combustible gas is formed and reaches the surface of the flame stabilizer 2. The gas is ignited by the ignition positive electrode 31 of the ignition element 3 built into the furnace body 11 and the ignition ground electrode 711 on the surface of the flame stabilizer 2 through an electric arc. Most of the gas is distributed in the central area of ​​the flame stabilizer 2 to form infrared combustion, while the outer edge forms a blue flame micro-flame atmospheric combustion. This achieves high-efficiency combustion and high heat intensity of the burner, effectively reducing the size of the appliance and making it more portable.

[0086] As can be seen from the above, the beneficial effects of this embodiment are as follows:

[0087] First, the combustion element 1 has high thermal intensity, several times higher than that of existing infrared burners, and also has a wide adjustment range, making it suitable for a wide range of applications.

[0088] Secondly, it is the first time that a composite combustion mode with infrared as the main method and atmospheric as the auxiliary method has been achieved in the same burner. It inherits the advantages of infrared as having superior wind resistance and high thermal efficiency, and also has the advantage of atmospheric combustion as being easier to ignite.

[0089] Third, the discharge positions of the built-in ignition positive electrode 31 and ignition ground electrode 711 are located at the edge of the flame stabilizer 2, where atmospheric combustion can be formed. Moreover, when the ignition positive electrode 31 discharges, the spark passes through the inner flame of the flame, resulting in a very high ignition success rate. This successfully solves the problem of ignition failure caused by the high-speed airflow carrying away heat during cold ignition, making it difficult to reach the ignition point of the gas.

[0090] Fourth, the vertical direct injection combustion means that the end face of the nozzle component 4 is vertically far from the high-temperature plane of the flame stabilizer 2, and there is also an air inlet 1211 near the nozzle component 4. The cold air continuously cools the flame, so the temperature rise is low and the risk of backfire is minimized.

[0091] Fifth, it provides an outdoor gas appliance that is small in size when folded, has a large support surface when unfolded, and has a stable structure. It is simple and convenient to unfold and fold, and is suitable for use in various outdoor scenarios.

[0092] Sixth, the gas appliances have a simple structure and low manufacturing cost, making them suitable for large-scale promotion and use.

[0093] Seventh, the CO emissions are low, making it safe and environmentally friendly to use.

[0094] Eighth, its wind resistance is further improved compared to traditional infrared burners, achieving stronger wind resistance while maintaining good combustion, ensuring that the heating performance in outdoor windy environments is basically not degraded.

[0095] This utility model provides a direct-injection high-intensity blue infrared gas appliance, comprising: a combustion element, which includes a furnace body and an injector tube connected to each other; a premixing adjustment plate adapted to the combustion element is fixedly connected to the furnace body; the premixing adjustment plate is disposed above the injector tube; the injector tube is provided with multiple air inlets; a flame stabilizer, which is disposed at the end of the furnace body away from the injector tube and is disposed opposite to the premixing adjustment plate; the flame stabilizer is also provided with an ignition ground electrode; an ignition element, which is disposed in the furnace body and includes an ignition positive electrode, which is disposed through and exposed outside the flame stabilizer; the ignition positive electrode and the ignition ground electrode are disposed close to each other; and a nozzle, which is connected to the end of the injector tube away from the furnace body. The gas appliance provided by this utility model injects high-pressure gas vertically upwards into the injector tube through the nozzle. The pressure difference draws air in from multiple air inlets perpendicular to the gas flow direction and into the furnace cavity. The premixing adjustment plate set in the center of the furnace cavity can extend the premixing path and adjust the distribution of the mixed gas, effectively shortening the axial length of the injector tube and the radial dimension of the furnace cavity. It efficiently forms a uniform combustible gas mixture, which reaches the surface of the flame stabilizer at the burner head. The gas is then ignited by the built-in ignition element. Most of the gas is distributed in the central area of ​​the flame stabilizer to form infrared combustion, while atmospheric combustion with a blue flame is formed at the outer edge. This achieves efficient combustion and high heat intensity of the burner, effectively reducing the size of the appliance and making it more portable.

[0096] It should be noted that the various embodiments in this utility model are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0097] It should also be noted that, in the present invention, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0098] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined in the present invention may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A direct-injection high-intensity blue infrared gas appliance, characterized in that, include: The combustion element includes a furnace body and an ejector tube that are interconnected. A premixing adjustment plate adapted to the furnace body is fixedly connected to the furnace body. The premixing adjustment plate is disposed above the ejector tube. The ejector tube is provided with multiple air inlets. A flame stabilizer is provided at one end of the furnace body away from the ejector tube, and the flame stabilizer is disposed opposite to the premixing adjustment plate. An ignition ground electrode is also provided on the flame stabilizer. An ignition element is disposed inside the furnace body, and the ignition element further includes an ignition positive electrode, which is disposed through and exposed outside the flame stabilizer, and the ignition positive electrode and the ignition ground electrode are disposed close to each other. A nozzle assembly connected to the end of the ejector tube furthest from the furnace body.

2. The direct-injection high-intensity blue infrared gas appliance according to claim 1, characterized in that, The furnace body includes a first cavity and a second cavity that are connected to each other. A through hole is opened at the center of the second cavity near the ejector tube. The second cavity is connected to the ejector tube through the through hole, and the position of the through hole corresponds to the center of the premixing adjustment plate. A plurality of first connectors are evenly distributed around the through hole, and the through holes are connected to a plurality of support members of the premixing adjustment plate. A plurality of guide holes are also evenly distributed on the edge of the premixing adjustment plate.

3. The direct-injection high-intensity blue infrared gas appliance according to claim 2, characterized in that, The inner wall of the first cavity is provided with a support step, and the flame stabilizer is closely attached to the support step. The flame stabilizer is in contact with the inner wall of the first cavity. The flame stabilizer is provided with multiple flame holes. The size of the flame holes is larger than the size of the ignition positive electrode. The ignition positive electrode passes through the flame holes and is exposed outside the flame stabilizer. The flame stabilizer is made of porous insulating refractory material.

4. The direct-injection high-intensity blue infrared gas appliance according to claim 1, characterized in that, The flame stabilizer is also covered with a decorative ring, which includes a first decorative ring and a second decorative ring connected to each other. The first decorative ring is disposed on the flame stabilizer, and the second decorative ring is sleeved on the outer wall of the furnace body. A positioning notch is provided on the side of the second decorative ring away from the first decorative ring. A positioning boss is provided on the outer wall of the furnace body. The positioning notch is adapted to be inserted into the positioning boss. Two ignition ground electrodes are provided on the side of the first decorative ring near the positioning notch. An ignition positive electrode is also provided between the two ignition ground electrodes. The ignition positive electrode and the two ignition ground electrodes are respectively disposed on the edge of the flame stabilizer.

5. The direct-injection high-intensity blue infrared gas appliance according to claim 3, characterized in that, The furnace body has an installation hole on one side where the through hole is provided. The ignition element is installed in the furnace body through the installation hole. One end of the ignition element near the flame stabilizer is connected to the ignition positive electrode, and the other end is provided with a terminal block. The terminal block is connected to a piezoelectric ceramic element.

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