Infrared burner

Abstract

The utility model belongs to the technical field of combustors, and discloses an infrared combustor which comprises a frame body and an infrared combustion piece. The frame body comprises a bearing part and a gas injection part arranged on the bearing part, and a plurality of premixed gas injection openings are formed in the gas injection part; the infrared combustion part is arranged on the bearing part and surrounds the gas injection part, an arc-shaped combustion face is arranged on the infrared combustion part and located below the premixed gas injection opening, and premixed gas is injected from the premixed gas injection opening to the starting end of the arc-shaped combustion face at a preset angle and is thrown out from the tail end of the arc-shaped combustion face through guiding of the arc-shaped combustion face. The infrared combustion part is of a porous structure, and the porosity of the infrared combustion part is smaller than or equal to 80%. The premixed gas of the infrared burner can be thrown out at a high speed for burning, the heating efficiency of the infrared burner is improved, and the backfire risk is low.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to an infrared burner. Background Technology

[0002] The basic structure of a traditional infrared burner is as follows: a porous infrared combustion plate (usually a porous infrared ceramic radiator) is set in the furnace. The area above the infrared combustion plate is the combustion zone, and the area below the infrared combustion plate is the mixing chamber. Self-suction air enters the mixing chamber through the ejector pipe. The gas entering from the gas inlet pipe is mixed with air in the mixing chamber and then burned in the combustion zone after passing through the small holes on the infrared combustion plate.

[0003] However, this type of infrared burner requires the premixed gas to be distributed as evenly as possible within the infrared combustion plate. Uneven distribution can lead to incomplete combustion, resulting in "dark zones" where the temperature is lower than other areas. This makes the infrared combustion plate more susceptible to breakage under its own thermal stress. Therefore, the premixed gas needs a flow channel of the same area as the infrared combustion plate before entering it. This large flow channel results in a slow flow rate of the premixed gas, leading to lower convective heat transfer capacity and affecting the burner's heating efficiency. Furthermore, traditional burners have a long distance from the mixing chamber to the combustion surface, and the large amount of mixed gas in the mixing chamber increases the risk of backfire. If backfire occurs, the mixing chamber can explode.

[0004] Therefore, there is an urgent need to develop an infrared burner to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides an infrared burner in which premixed gas can be ejected at high speed for combustion, thereby improving the heating efficiency of the infrared burner and reducing the risk of backfire.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Infrared burner, including:

[0008] The frame includes a support section and a gas injection section disposed on the support section, wherein the gas injection section is provided with a plurality of premixed gas injection ports;

[0009] An infrared combustion element is disposed on the support part and surrounds the gas injection part. The infrared combustion element has an arc-shaped combustion surface located below the premixed gas injection port. The premixed gas is injected from the premixed gas injection port at a preset angle towards the beginning of the arc-shaped combustion surface and is ejected from the end of the arc-shaped combustion surface by the guide of the arc-shaped combustion surface. The infrared combustion element has a dense porous structure.

[0010] Optionally, the arc-shaped combustion surface includes a first plane, a second plane, and an arc surface that smoothly connects to the first plane and the second plane, wherein the included angle between the first plane and the second plane is 60°-120°.

[0011] Optionally, the arc-shaped combustion surface is provided with a plurality of spaced arc-shaped grooves, which extend along the curvature direction of the arc-shaped combustion surface.

[0012] Optionally, the width of the arc-shaped groove is 3mm-15mm.

[0013] Optionally, the thickness of the infrared combustion element at the location where the arc-shaped groove is provided is 5mm-20mm.

[0014] Optionally, a guide arm is provided below the premixed gas injection port on the gas injection section, and a guide member is also provided on the gas injection section. The guide member includes a guide plate located above the premixed gas injection port. The guide plate and the guide arm are used to guide the premixed gas to be sprayed toward the arc-shaped combustion surface at the preset angle.

[0015] Optionally, the infrared burner further includes:

[0016] Multiple external heat insulation blocks are provided, and the multiple external heat insulation blocks are detachably connected to the bearing part. Each external heat insulation block is provided with a fixing groove. The multiple external heat insulation blocks are spliced ​​together and the multiple fixing grooves form a combustion element installation space. The combustion element installation space is used to fix the infrared combustion element.

[0017] An inner heat insulation block is disposed between the gas injection section and the infrared combustion element, and the inner heat insulation block and a plurality of outer heat insulation blocks clamp and fix the infrared combustion element.

[0018] Optionally, the outer wall of the external heat insulation block is provided with a slot, and each external heat insulation block is provided with a corresponding connecting plate. The first end of the connecting plate is bent to form a snap-fit ​​section, which snaps into the slot. The connector passes through the second end of the connecting plate and is connected to the side wall of the bearing part.

[0019] Optionally, the supporting part and the gas injection part are provided with combustion-supporting gas flow channels and gas flow channels corresponding one-to-one with the premixed gas injection ports. The combustion-supporting gas in the corresponding combustion-supporting gas flow channels and the gas in the gas flow channels are mixed at the premixed gas injection ports and then injected. The supporting part is also provided with a combustion-supporting gas supply part and a gas supply part. The combustion-supporting gas supply part is used to deliver low-temperature combustion-supporting gas into multiple combustion-supporting gas flow channels, and the gas supply part is used to deliver gas into multiple gas flow channels.

[0020] Optionally, the supporting part and the gas injection part are in an inverted "T" shape. The infrared combustion element is provided on both sides of the gas injection part. A portion of the plurality of premixed gas injection ports is a first premixed gas injection port and the other portion is a second premixed gas injection port. The first premixed gas injection port and the second premixed gas injection port are respectively located on both sides of the gas injection part and are used to inject the premixed gas onto the corresponding infrared combustion element.

[0021] Optionally, the gas supply unit includes a first gas supply unit and a second gas supply unit disposed at both ends of the support unit, wherein the first gas supply unit and the support unit form a first gas supply junction cavity, and the second gas supply unit and the support unit form a second gas supply junction cavity.

[0022] A portion of the multiple combustion-supporting gas flow channels is a first combustion-supporting gas flow channel, and another portion is a second combustion-supporting gas flow channel. The first combustion-supporting gas flow channel is disposed in the bearing portion on one side of the gas injection section and in the gas injection section. The inlet of the first combustion-supporting gas flow channel is connected to the first combustion-supporting gas manifold, and the outlet of the first combustion-supporting gas is connected to the first premixed gas injection port. The second combustion-supporting gas flow channel is disposed in the bearing portion on the other side of the gas injection section and in the gas injection section. The inlet of the second combustion-supporting gas flow channel is connected to the second combustion-supporting gas manifold, and the outlet of the second combustion-supporting gas flow channel is connected to the second premixed gas injection port.

[0023] The gas supply section is disposed on the support section and is located on opposite sides of the support section with the gas injection section. The gas supply section and the support section form a gas manifold.

[0024] The gas flow channels are disposed within the bearing portion and the gas injection portion. The inlets of all the gas flow channels are connected to the gas manifold. The outlets of a portion of the gas flow channels are connected to the first premixed gas injection port, and the outlets of another portion of the gas flow channels are connected to the second premixed gas injection port.

[0025] Optionally, the first combustion-supporting gas flow channel includes a first outlet section connected to the first premixed gas injection port, and the second combustion-supporting gas flow channel includes a second outlet section connected to the second premixed gas injection port; the gas flow channel includes a gas outlet section, a portion of which is connected to the first outlet section and is arranged at an angle, and another portion of which is connected to the second outlet section and is arranged at an angle.

[0026] Optionally, multiple first gas-supporting channels and multiple second gas-supporting channels are arranged parallel to each other along the length direction of the frame, and the first gas-supporting channels and the second gas-supporting channels are arranged alternately.

[0027] Optionally, the support portion and the gas injection portion are an integral structure.

[0028] The beneficial effects of this utility model are:

[0029] This invention provides an infrared burner, including a frame and an infrared combustion element. The frame includes a support section and a gas injection section. The gas injection section has multiple premixed gas injection ports, which can spray premixed gas at a preset angle onto the arc-shaped combustion surface of the infrared combustion element, and then eject it under the guidance of the arc-shaped combustion surface. This configuration, on the one hand, allows the premixed gas to contact the infrared combustion element as much as possible, thereby achieving combustion on the infrared combustion element and improving the infrared radiation performance of the infrared combustion element; on the other hand, the premixed gas can be sprayed from the premixed gas injection ports onto the arc-shaped combustion surface at a relatively high speed, achieving an impact effect on the premixed gas, forcing the premixed gas to be ejected from the tail end of the arc-shaped combustion surface under the guidance of the arc-shaped combustion surface, enhancing the convective heat transfer effect of the infrared burner. In addition, the high premixed gas velocity can also reduce the risk of backfire.

[0030] Furthermore, by setting the infrared burner to a porous structure with a relatively dense porosity, the premixed gas can be burned as much as possible on the arc-shaped combustion surface of the infrared burner. Although this reduces the infrared radiation performance to some extent, it increases the combustion temperature. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 content of the embodiments of this utility model and these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the infrared burner provided in this utility model embodiment;

[0033] Figure 2 This is a front view of the infrared burner provided in this embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the infrared combustion element provided by this utility model;

[0035] Figure 4 This is a front view of the infrared combustion element provided in this embodiment of the utility model;

[0036] Figure 5 yes Figure 4 A partial schematic diagram of the cross-sectional view at EE;

[0037] Figure 6 This is a partially exploded schematic diagram of an infrared burner provided in an embodiment of the present invention;

[0038] Figure 7 A side view of an infrared burner provided in an embodiment of this utility model;

[0039] Figure 8 for Figure 7 Cross-sectional view at AA (showing the first combustion-supporting gas flow channel);

[0040] Figure 9 for Figure 7 Cross-sectional view at BB (showing the second combustion-supporting gas flow channel);

[0041] Figure 10 This is the front view of the frame;

[0042] Figure 11 for Figure 10 A partial view of the sectional view at CC;

[0043] Figure 12 for Figure 10 A partial view of the sectional view at DD.

[0044] In the picture:

[0045] 100. Frame; 101. First combustion-supporting channel; 1011. First outlet section; 102. Second combustion-supporting channel; 1021. Second outlet section; 103. Combustion channel; 1031. Combustion outlet section; 110. Supporting part; 120. Gas injection part; 121. First gas injection port; 122. Second gas injection port; 123. Guide arm; 130. Support; 140. End plate;

[0046] 210. First auxiliary gas supply unit; 211. First auxiliary gas manifold; 220. Second auxiliary gas supply unit; 221. Second auxiliary gas manifold;

[0047] 300. Gas supply unit; 310. Gas manifold;

[0048] 400. Infrared combustion element; 410. Arc-shaped combustion surface; 411. First plane; 412. Second plane; 413. Arc surface; 420. Arc-shaped groove; 430. Stepped structure;

[0049] 500. Flow guide; 510. Flow deflector;

[0050] 600. External heat insulation block; 610. Fixing groove; 620. Card slot;

[0051] 700. Internal insulation block;

[0052] 800. Connecting plate; 810. Snap-fit ​​section;

[0053] 900. Connectors;

[0054] 1000, Ignition electrode;

[0055] 1100. Flame detection component. Detailed Implementation

[0056] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0057] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0060] This embodiment provides an infrared burner in which the premixed gas can be ejected at high speed for combustion, which improves the heating efficiency of the infrared burner and has a low risk of backfire.

[0061] Specifically, such as Figure 1 and Figure 2 As shown, the infrared burner includes a frame 100 and an infrared burner element 400. The frame 100 includes a support portion 110 and a gas injection portion 120 disposed on the support portion 110, with multiple premixed gas injection ports on the gas injection portion 120. The infrared burner element 400 is disposed on the support portion 110 and surrounds the gas injection portion 120. The infrared burner element 400 has an arc-shaped combustion surface 410 located below the premixed gas injection ports. Premixed gas is injected from the premixed gas injection ports at a preset angle towards the beginning of the arc-shaped combustion surface 410, and guided by the arc-shaped combustion surface 410, is ejected from the end of the arc-shaped combustion surface 410. The infrared burner element 400 has a porous structure with a porosity of less than or equal to 80%. This design serves two purposes. First, it maximizes the contact between the premixed gas and the infrared burner 400, facilitating combustion on the burner and improving its infrared radiation performance. Second, the premixed gas is injected at a high velocity from the injection port onto the curved combustion surface 410, creating an impact effect that forces it to be ejected from the end of the curved combustion surface 410, enhancing the convective heat transfer of the infrared burner. Furthermore, the higher premixed gas velocity reduces the risk of backfire. Additionally, the porous structure and high porosity of the infrared burner 400 ensure that the premixed gas burns primarily on its curved combustion surface 410. While this reduces infrared radiation performance to some extent, it increases the combustion temperature.

[0062] Understandably, this method of high-speed ejection and combustion of premixed gas on the arc-shaped combustion surface 410 of the infrared combustion element 400 produces lower infrared radiation but higher combustion temperature compared to the traditional method of combustion within the foam ceramic body. This method is more suitable for scenarios that do not require much infrared heating, such as heating some infrared-insensitive materials.

[0063] Optionally, the infrared combustion element 400 may be made of one of the following materials: silicon carbide (SiC), silicon nitride and a combination of silicon carbide (SiC+SiN4), alumina (Al2O3), ceramics and cordierite (Mg2Al4Si5O18).

[0064] The infrared temperature of the infrared burner 400 typically depends on the air-fuel ratio (the ratio of air to fuel flow rate) and the power regulation ratio of the infrared burner (the ratio of the maximum to the minimum power of a single infrared burner). According to experimental data, by adjusting the air-fuel ratio to 10-14 and the power regulation ratio to less than or equal to 12, the infrared temperature of the infrared burner 400 can be achieved within the range of 800℃-1450℃.

[0065] Furthermore, such as Figure 3 and Figure 4 As shown, in this embodiment, the arc-shaped combustion surface 410 includes a first plane 411, a second plane 412, and an arc surface 413 smoothly connected to the first plane 411 and the second plane 412. The included angle α between the first plane 411 and the second plane 412 is 60°-120°. This configuration allows the arc-shaped combustion surface 410 to exert less resistance on the premixed gas, which is beneficial for the rapid flow of the premixed gas.

[0066] Furthermore, such as Figure 3 and Figure 5 As shown, the arc-shaped combustion surface 410 is provided with multiple spaced arc-shaped grooves 420, which extend along the curvature direction of the arc-shaped combustion surface 410. By providing multiple arc-shaped grooves 420, the contact area between the arc-shaped combustion surface 410 and the premixed gas can be increased, thereby improving the infrared effect of the infrared burner 400. Furthermore, through the cooperation of the arc-shaped combustion surface 410 and the arc-shaped grooves 420, the infrared burner 400 has a certain "binding" effect on the combustion-supporting gas and the fuel gas, so that the combustion-supporting gas and the fuel gas remain on the infrared burner 400 for a certain period of time, avoiding a reduction in the infrared effect due to an excessively short residence time.

[0067] Optionally, see [link to relevant documentation] Figure 5 The width b of the arc groove 420 can be 3mm-15mm. For example, it can be 3mm, 5mm, 7mm, 9mm, 11mm, 13mm or 15mm, etc., which can be set according to actual needs.

[0068] Optionally, see [link to relevant documentation] Figure 5 The thickness c of the infrared combustion element 400 at the location of the arc-shaped groove 420 is 5mm-20mm. For example, it can be 5mm, 10mm, 15mm or 20mm, etc., which can be set according to actual needs.

[0069] It is worth noting that b and c are positively correlated, that is, the larger b is, the larger c is.

[0070] Optionally, see [link to relevant documentation] Figure 5 The depth d of the arc groove 420 at the edge can be the same as c.

[0071] Furthermore, such as Figure 6As shown, a guide arm 123 is provided below the premixed gas injection port on the gas injection section 120. The gas injection section 120 also has a guide member 500, which includes a guide plate 510 located above the premixed gas injection port. The guide plate 510 and the guide arm 123 are used to guide the premixed gas to be sprayed at a preset angle onto the arc-shaped combustion surface 410. The guide plate 510 and the guide arm 123 jointly guide the injection direction of the premixed gas, resulting in better guidance reliability. Furthermore, in addition to guiding the injection direction of the premixed gas, the guide arm 123 can also limit the landing point of the premixed gas on the arc-shaped combustion surface 410, ensuring that the premixed gas lands at the beginning of the arc-shaped combustion surface 410 as required.

[0072] In this embodiment, the supporting part 110 and the gas injection part 120 form an inverted "T" shape. Infrared combustion elements 400 are provided on both opposite sides of the gas injection part 120. A portion of the multiple premixed gas injection ports are first premixed gas injection ports, and the other portion are second premixed gas injection ports. The first and second premixed gas injection ports are located on opposite sides of the gas injection part 120, respectively, and are used to inject premixed gas onto the corresponding infrared combustion elements 400. Therefore, guide arms 123 are provided on both sides of the gas injection part 120.

[0073] Optionally, in this embodiment, the guide member 500 further includes a connecting portion with a groove connected to the top of the gas injection portion 120. Guide plates 510 are provided on both sides of the connecting portion. This guide member 500 has a simple structure and is relatively easy to install and disassemble.

[0074] Alternatively, the guide element 500 can be manufactured by bending.

[0075] Optionally, see [link to relevant documentation] Figure 1 In this embodiment, end plates 140 are detachably provided at both ends of the gas injection section 120 in the extending direction. The end plates 140 are used to clamp and fix the guide member 500.

[0076] Optionally, the end plate 140 and the gas injection section 120 can be connected by bolts.

[0077] Further, see also Figure 6The infrared burner also includes an outer heat insulation block 600 and an inner heat insulation block 700. Multiple outer heat insulation blocks 600 are detachably connected to the support unit 110. Each outer heat insulation block 600 has a fixing groove 610. The multiple outer heat insulation blocks 600 are spliced ​​together, and the fixing grooves 610 enclose a combustion element mounting space for fixing the infrared combustion element 400. The inner heat insulation block 700 is positioned between the gas injection unit 120 and the infrared combustion element 400, clamping and fixing the infrared combustion element 400 together with the multiple outer heat insulation blocks 600. By setting the outer heat insulation blocks 600 and the inner heat insulation blocks 700, heat insulation between the infrared combustion element 400 and the frame 100 is achieved, reducing the problem of excessive temperature rise in the frame 100 due to the infrared combustion element 400, thereby improving the stability of the frame 100. Furthermore, the outer heat insulation block 600 is detachably connected to the support unit 110, and the infrared burner 400 can be disassembled by removing the outer heat insulation block 600. This avoids the need for destructive removal of other components of the infrared burner when replacing the infrared burner 400, thus reducing the maintenance cost of the infrared burner. In addition, the multiple outer heat insulation blocks 600 are spliced ​​together, making it easier to remove the outer heat insulation blocks 600 when the infrared burner 400 needs to be replaced, reducing the difficulty of disassembling the infrared burner 400.

[0078] Further, see also Figure 3 , Figure 4 and Figure 6 In this embodiment, the infrared burner 400 has a stepped structure 430 at the beginning and the inner heat insulation block 700 is inverted L-shaped. The inverted L-shaped inner heat insulation block 700 cooperates with the stepped structure 430 to better fix the infrared burner 400.

[0079] Optionally, the top of the inverted L-shaped inner heat insulation block 700 abuts against the flow guide arm 123 to achieve heat insulation between the flow guide arm 123 and the infrared combustion element 400.

[0080] Optionally, see [link to relevant documentation] Figure 1 and Figure 6 The outer wall of the external heat insulation block 600 is provided with a slot 620. Each external heat insulation block 600 is provided with a corresponding connecting plate 800. The first end of the connecting plate 800 is bent to form a snap-fit ​​section 810, which snaps into the slot 620. The connecting piece 900 passes through the second end of the connecting plate 800 and connects to the side wall of the supporting part 110. The external heat insulation block 600 is fixed to the supporting part 110 by snapping the connecting plate 800 with it. The structure is simple and the installation and disassembly are relatively convenient.

[0081] Optionally, the connector 900 can be a bolt, with a threaded hole on the side wall of the bearing portion 110, and the bolt is threadedly connected to the threaded hole.

[0082] Further, see also Figure 1 The frame 100 also includes a support 130, on which an ignition electrode 1000 and a flame detection element 1100 are provided. The end of the ignition electrode 1000 is spaced apart from the arc-shaped combustion surface 410 of the infrared combustion element 400 for ignition, and the flame detection element 1100 is used to detect combustion on the arc-shaped combustion surface 410.

[0083] In this embodiment, since there are two infrared combustion elements 400, there are also two ignition electrodes 1000 and two flame detectors 1100.

[0084] Furthermore, such as Figures 7-12 As shown, the support section 110 and the gas injection section 120 are equipped with combustion-supporting gas channels and gas channels 103 corresponding to the premixed gas injection ports. The combustion-supporting gas in the corresponding combustion-supporting gas channels and the gas in the gas channels 103 are mixed at the premixed gas injection ports and then ejected. The support section 110 is also equipped with a combustion-supporting gas supply section and a gas supply section 300. The combustion-supporting gas supply section is used to supply low-temperature combustion-supporting gas into multiple combustion-supporting gas channels, and the gas supply section 300 is used to supply gas into multiple gas channels 103. This configuration has several advantages. First, it can utilize the low-temperature characteristics of the combustion-supporting gas to cool the frame 100, which can improve the stability of the frame 100 at high temperatures and improve energy utilization efficiency. Second, integrating the combustion-supporting gas channels and gas channels 103 inside the frame 100 results in high heat exchange efficiency, a simple structure, and ease of processing, without increasing the size of the infrared burner. Third, the combustion-supporting gas and the gas are independent of each other inside the frame 100, and there is no large amount of mixed gas, which can effectively avoid the problem of backfire.

[0085] Further, see also Figures 8-10 In this embodiment, the supporting part 110 and the gas injection part 120 form an inverted "T" shape. Infrared combustion elements 400 are provided on both opposite sides of the gas injection part 120 to... Figure 4 and Figure 5 Taking the orientation shown as an example, infrared combustion elements 400 are provided on the bearing parts 110 on both the left and right sides of the gas injection part 120.

[0086] A portion of the multiple premixed gas injection ports is a first premixed gas injection port, and another portion is a second premixed gas injection port. The first and second premixed gas injection ports are located on opposite sides of the gas injection section 120, respectively. Figure 8 and Figure 9Taking the orientation shown as an example, the first premixed gas injection port is located on the left side of the gas injection section 120 and is used to inject premixed gas onto the infrared burner 400 located on the left side of the gas injection section 120. The second premixed gas injection port is located on the right side of the gas injection section 120 and is used to inject premixed gas onto the infrared burner 400 located on the right side of the gas injection section 120.

[0087] The support portion 110 and the gas injection portion 120 are arranged in an inverted "T" shape to facilitate the arrangement of the infrared combustion element 400 on the support portion 110. Furthermore, the infrared combustion element 400 can be designed as a long strip similar in shape to the support portion 110 to facilitate processing and installation.

[0088] Further, see also Figures 8-12 The gas-supporting supply unit includes a first gas-supporting supply unit 210 and a second gas-supporting supply unit 220 disposed at both ends of the bearing unit 110, so as to... Figure 8 and Figure 9 Taking the orientation shown as an example, the first gas-supporting supply unit 210 is located at the left end of the bearing unit 110, and the second gas-supporting supply unit 220 is located at the right end of the bearing unit 110.

[0089] See also Figure 8 The first combustion-supporting gas supply section 210 and the supporting section 110 form a first combustion-supporting gas manifold 211. A portion of the multiple combustion-supporting gas flow channels is the first combustion-supporting gas flow channel 101. The first combustion-supporting gas flow channel 101 is disposed within the supporting section 110 on one side of the gas injection section 120 and within the gas injection section 120. In this embodiment, the first combustion-supporting gas flow channel 101 is disposed within the supporting section 110 on the left side of the gas injection section 120 and within the gas injection section 120. Specifically, the inlet of the first combustion-supporting gas flow channel 101 is connected to the first combustion-supporting gas manifold 211, and the outlet of the first combustion-supporting gas flow channel 101 is connected to the first premixed gas injection port.

[0090] Optionally, see [link to relevant documentation] Figure 8 The first combustion-supporting gas flow channel 101 may include a first vertical section communicating with the first combustion-supporting gas manifold 211, a first horizontal section communicating with the first vertical section and extending into the gas injection section 120 from the support portion 110 on the left side of the gas injection section 120, a second vertical section communicating with the first horizontal section and extending into the gas injection section 120, and a second horizontal section communicating with the second vertical section. The outlet of the second horizontal section is the first premixed gas injection port.

[0091] See also Figure 9The second oxidizing gas supply section 220 and the supporting section 110 form a second oxidizing gas manifold 221. Another part of the multiple oxidizing gas flow channels is the second oxidizing gas flow channel 102, which is disposed within the supporting section 110 on the other side of the gas injection section 120 and within the gas injection section 120. In this embodiment, the second oxidizing gas flow channel 102 is disposed within the supporting section 110 on the right side of the gas injection section and within the gas injection section 120. Specifically, the inlet of the second oxidizing gas flow channel 102 communicates with the second oxidizing gas manifold 221, and the outlet of the second oxidizing gas communicates with the second premixed gas injection port.

[0092] Optionally, see [link to relevant documentation] Figure 9 The second combustion-supporting gas flow channel 102 may include a third vertical section communicating with the second combustion-supporting gas manifold 221, a third horizontal section communicating with the third vertical section and extending into the gas injection section 120 along the right side of the bearing section 110, a fourth vertical section communicating with the third horizontal section and extending into the gas injection section 120, and a fourth horizontal section communicating with the fourth vertical section. The outlet of the fourth horizontal section is the second premixed gas injection port.

[0093] See also Figure 8 and Figure 9 A gas supply unit 300 is mounted on a support unit 110 and is located on opposite sides of the support unit 110, along with a gas injection unit 120. The gas supply unit 300 and the support unit 110 together form a gas manifold 310. Gas channels 103 are disposed within the support unit 110 and the gas injection unit 120. The inlets of all gas channels 103 are connected to the gas manifold 310, the outlets of some gas channels 103 are connected to the first premixed gas injection port, and the outlets of other gas channels 103 are connected to the second premixed gas injection port. This arrangement allows the gas channels 103 to be vertically straight, which facilitates processing and shortens the length of the gas channels 103.

[0094] By arranging a first combustion-supporting gas flow channel 101 and a second combustion-supporting gas flow channel 102 on the bearing portions 110 on the left and right sides of the gas injection section 120, on the one hand, the contact area between the combustion-supporting gas flow channel and the bearing portion 110 is increased, which is beneficial to improving the cooling effect of the combustion-supporting gas on the frame 100; on the other hand, the dual-sided combustion-supporting gas supply method ensures that the length of the combustion-supporting gas flow channel on each side is not too long, which is beneficial to improving the supply efficiency of the combustion-supporting gas; and furthermore, it is convenient to process on the frame 100.

[0095] It is worth noting that, please continue to refer to Figure 8Taking the first combustion-supporting channel 101 as an example, during the processing of the first combustion-supporting channel 101, it is generally formed by drilling. Therefore, to facilitate processing, the first horizontal section of the first combustion-supporting channel 101 on the support part 110 is generally drilled starting from the left side wall of the support part 110, and after forming, the opening on the left side wall of the support part 110 is sealed with a plug. Similarly, the processing method for the second vertical section of the first combustion-supporting channel 101 on the gas injection part 120 is to drill starting from the top wall of the gas injection part 120, and after forming, the opening on the top wall of the gas injection part 120 is sealed with a plug. The processing method for the second combustion-supporting channel 102 is the same as that for the first combustion-supporting channel 101.

[0096] See also Figure 6 and Figure 8 Taking the first combustion-supporting gas flow channel 101 as an example, in this embodiment, the connector 900 can serve as a plug for the first horizontal section of the first combustion-supporting gas flow channel 101, sealing the opening on the left side wall of the first horizontal section located on the support part 110. With this configuration, the connector 900 serves both to connect the connecting plate 800 and the support part 110, and to seal the processing opening of the first horizontal section, achieving a "dual-purpose" design and simplifying the structure of the infrared burner.

[0097] Optionally, the support unit 110 and the gas injection unit 120 can be an integral structure for easy processing.

[0098] Optionally, see [link to relevant documentation] Figure 11 Multiple first-stage combustion-supporting gas channels 101 and multiple second-stage combustion-supporting gas channels 102 are arranged parallel to each other along the length of the frame 100, and the first-stage combustion-supporting gas channels 101 and the second-stage combustion-supporting gas channels 102 are arranged alternately. This arrangement facilitates processing; it also increases the contact area between the combustion-supporting gas and the support portion 110, improving the cooling effect of the combustion-supporting gas on the frame 100; and it ensures that the flames on the opposite sides of the support portion 110 are more uniform.

[0099] Further, see also Figure 12 The first combustion-supporting gas flow channel 101 includes a first outlet section 1011 connected to the first premixed gas injection port, and the second combustion-supporting gas flow channel 102 includes a second outlet section 1021 connected to the second premixed gas injection port. The gas flow channel 103 includes a gas outlet section 1031, a portion of which is connected to the first outlet section 1011 at an angle, and another portion of which is connected to the second outlet section 1021 at an angle. This arrangement facilitates thorough mixing of the gas and the combustion-supporting gas, reducing the risk of uneven combustion.

[0100] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An infrared burner, characterized in that, include: The frame (100) includes a support part (110) and a gas injection part (120) disposed on the support part (110), wherein the gas injection part (120) is provided with a plurality of premixed gas injection ports; An infrared combustion element (400) is disposed on the support part (110) and surrounds the gas injection part (120). The infrared combustion element (400) is provided with an arc-shaped combustion surface (410). The arc-shaped combustion surface (410) is located below the premixed gas injection port. The premixed gas is sprayed from the premixed gas injection port at a preset angle to the beginning of the arc-shaped combustion surface (410) and is ejected from the tail end of the arc-shaped combustion surface (410) by the guide of the arc-shaped combustion surface (410). The infrared combustion element (400) has a porous structure and the porosity of the infrared combustion element (400) is less than or equal to 80%.

2. The infrared burner according to claim 1, characterized in that, The arc-shaped combustion surface (410) includes a first plane (411), a second plane (412), and an arc surface (413) that is smoothly connected to the first plane (411) and the second plane (412). The included angle between the first plane (411) and the second plane (412) is 60°-120°.

3. The infrared burner according to claim 1, characterized in that, The arc-shaped combustion surface (410) is provided with a plurality of spaced arc-shaped grooves (420), which extend along the curvature direction of the arc-shaped combustion surface (410).

4. The infrared burner according to claim 3, characterized in that, The width of the arc-shaped groove (420) is 3mm-15mm.

5. The infrared burner according to claim 3, characterized in that, The thickness of the infrared combustion element (400) at the location where the arc-shaped groove (420) is provided is 5mm-20mm.

6. The infrared burner according to claim 1, characterized in that, On the gas injection section (120), a guide arm (123) is provided below the premixed gas injection port. The gas injection section (120) is also provided with a guide member (500). The guide member (500) includes a guide plate (510) located above the premixed gas injection port. The guide plate (510) and the guide arm (123) are used to guide the premixed gas to be sprayed toward the arc-shaped combustion surface (410) at the preset angle.

7. The infrared burner according to claim 1, characterized in that, The infrared burner also includes: Multiple external heat insulation blocks (600) are provided. The multiple external heat insulation blocks (600) are detachably connected to the bearing part (110). The external heat insulation blocks (600) are provided with fixing grooves (610). The multiple external heat insulation blocks (600) are spliced ​​together and the multiple fixing grooves (610) form a combustion element installation space. The combustion element installation space is used to fix the infrared combustion element (400). An inner heat insulation block (700) is disposed between the gas injection section (120) and the infrared combustion element (400), and the inner heat insulation block (700) and a plurality of outer heat insulation blocks (600) clamp and fix the infrared combustion element (400).

8. The infrared burner according to claim 7, characterized in that, The outer wall of the external heat insulation block (600) is provided with a slot (620), and each external heat insulation block (600) is provided with a corresponding connecting plate (800). The first end of the connecting plate (800) is bent to form a snap-fit ​​section (810), which snaps into the slot (620). The connector (900) passes through the second end of the connecting plate (800) and is connected to the side wall of the bearing part (110).

9. The infrared burner according to any one of claims 1-8, characterized in that, The support unit (110) and the gas injection unit (120) are provided with combustion-supporting gas flow channels and gas flow channels (103) corresponding to the premixed gas injection ports. The combustion-supporting gas in the corresponding combustion-supporting gas flow channel and the gas in the gas flow channel (103) are mixed at the premixed gas injection port and then ejected. The support unit (110) is also provided with a combustion-supporting gas supply unit and a gas supply unit (300). The combustion-supporting gas supply unit is used to deliver low-temperature combustion-supporting gas into multiple combustion-supporting gas flow channels, and the gas supply unit (300) is used to deliver gas into multiple gas flow channels (103).

10. The infrared burner according to claim 9, characterized in that, The supporting part (110) and the gas injection part (120) have an inverted "T" shaped structure. The infrared combustion element (400) is provided on both sides of the gas injection part (120). A portion of the plurality of premixed gas injection ports is a first premixed gas injection port and the other portion is a second premixed gas injection port. The first premixed gas injection port and the second premixed gas injection port are respectively located on both sides of the gas injection part (120) and are used to inject the premixed gas onto the corresponding infrared combustion element (400).

11. The infrared burner according to claim 10, characterized in that, The gas supply unit includes a first gas supply unit (210) and a second gas supply unit (220) disposed at both ends of the support unit (110). The first gas supply unit (210) and the support unit (110) form a first gas supply manifold (211), and the second gas supply unit (220) and the support unit (110) form a second gas supply manifold (221). A portion of the multiple combustion-supporting channels is a first combustion-supporting channel (101), and another portion is a second combustion-supporting channel (102). The first combustion-supporting channel (101) is disposed in the support portion (110) on one side of the gas injection portion (120) and in the gas injection portion (120). The inlet of the first combustion-supporting channel (101) is connected to the first combustion-supporting manifold (211), and the outlet of the first combustion-supporting gas is connected to the first premixed gas injection port. The second combustion-supporting channel (102) is disposed in the support portion (110) on the other side of the gas injection portion (120) and in the gas injection portion (120). The inlet of the second combustion-supporting channel (102) is connected to the second combustion-supporting manifold (221), and the outlet of the second combustion-supporting channel (102) is connected to the second premixed gas injection port. The gas supply unit (300) is disposed on the support unit (110) and is disposed on opposite sides of the support unit (110) along with the gas injection unit (120). The gas supply unit (300) and the support unit (110) together form a gas manifold (310). The gas flow channel (103) is disposed in the bearing part (110) and the gas injection part (120). The inlet of all the gas flow channels (103) is connected to the gas manifold (310). The outlet of a part of the gas flow channels (103) is connected to the first premixed gas injection port, and the outlet of another part of the gas flow channels (103) is connected to the second premixed gas injection port.

12. The infrared burner according to claim 11, characterized in that, The first combustion-supporting gas flow channel (101) includes a first outlet section (1011) connected to the first premixed gas injection port, and the second combustion-supporting gas flow channel (102) includes a second outlet section (1021) connected to the second premixed gas injection port; the gas flow channel (103) includes a gas outlet section (1031), a portion of which is connected to the first outlet section (1011) and is set at an angle, and another portion of which is connected to the second outlet section (1021) and is set at an angle.

13. The infrared burner according to claim 11, characterized in that, Multiple first gas-supporting flow channels (101) and multiple second gas-supporting flow channels (102) are arranged parallel to each other along the length direction of the frame (100), and the first gas-supporting flow channels (101) and the second gas-supporting flow channels (102) are arranged alternately.

14. The infrared burner according to claim 9, characterized in that, The supporting part (110) and the gas injection part (120) are an integral structure.

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