Infrared burner and oven

Abstract

Infrared burner, comprising: a combustion tube (1), the combustion tube (1) being provided with a plurality of flame outlet holes, the plurality of flame outlet holes being provided along a longitudinal direction of the combustion tube (1); and a hood (2), the hood (2) comprising a heating area (21), a closed opening (27) connected to the heating area (21), and an infrared radiation plate (23) located above the heating area (21), the infrared radiation plate (23) being made of metal; wherein the hood (2) is connected to the combustion tube (1) through the closed opening (27), wherein the flame outlet hole faces the heating area (21) so that the flame outlet hole is connected to the heating area (21), and wherein the flame outlet hole is used to emit a flame to burn the infrared radiation plate (23) so that the infrared radiation plate (23) is burned red and generates infrared radiation.

Description

Technical area

[0001] The present utility model relates to the technical field of burners, in particular an infrared burner and an oven. State of the art

[0002] In a traditional gas oven, the surrounding air is heated by the combustion of gas, and the heated surrounding air forms a hot air stream that flows upwards through the food being grilled on the grill.

[0003] However, the problem with the above grilling method is that the hot airflow passes through the surface of the food to heat it, while the interior of the food must be heated by conduction from the food itself after the surface of the food is heated. As a result, the surface of the food is often burned, while the interior of the food remains uncooked. Disclosure of the application

[0004] In view of the disadvantages in the prior art, the present utility model provides an infrared burner and an oven, wherein the flame burning at the flame outlet hole is concentrated in the heating area, so that the infrared radiation plate is heated and reddened to generate infrared radiation for heating.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions: In a first aspect of the present utility model, an infrared burner is provided, comprising a combustion tube and a hood, wherein the combustion tube is provided with a plurality of flame outlet holes, the plurality of flame outlet holes being provided along a longitudinal direction of the combustion tube, and wherein the hood comprises a heating portion, a closed opening connected to the heating portion, and an infrared radiation plate located above the heating portion. The infrared radiation plate is made of metal, the hood is connected to the combustion tube through the closed opening, the flame outlet hole facing the heating portion so that the flame outlet hole is connected to the heating portion, and the flame outlet hole is used to emit a flame to burn the infrared radiation plate.so that the infrared radiation plate is burned red and produces infrared radiation.

[0006] In a second aspect of the present invention, an infrared burner is provided, comprising a combustion tube, an infrared radiation plate, and a heating portion. The infrared radiation plate is provided above the combustion tube and extends along the longitudinal direction of the combustion tube. The infrared radiation plate is provided in an upwardly curved shape. The infrared radiation plate has a width of s1, the infrared radiation plate has a curvature height of h, where s1 > h, or 2*h≤s1≤5*h, and a plurality of first air flow channels are passed through the infrared radiation plate. The heating portion is formed between the combustion tube and the infrared radiation plate. The infrared radiation plate is heated so that an infrared radiation surface provided on the infrared radiation plate is reddened, thereby generating infrared radiation.

[0007] In a second aspect of the present utility model, there is provided an oven comprising an oven body and a burner, wherein the burner is any of the above infrared burners, the infrared burner being provided on the oven body.

[0008] Through the above technical solutions, when the gas is supplied, it can be burned at different front and bottom positions in the heating area through the flame outlet holes arranged in the front and rear directions to generate flames. The flames will burn the infrared radiation plate to add oil, and the heat transfer will make the infrared radiation plate burn red. The reddened infrared radiation plate is directed upward to generate infrared radiation. Through the way of infrared radiation on the food heating, infrared can act directly on the food and has good penetration into the food inside and outside the heater more evenly, preventing the food surface from being scorched and the inside from being cooked by the situation. Drawing of the disclosure

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the related art, the attached drawings used in the description of the embodiments or the related art will be briefly described below. Of course, the attached drawings in the following description are only some of the embodiments of the present utility model, and those skilled in the art can create other attached drawings based on these drawings without any creative effort. Fig. 1 is an assembly diagram according to the first embodiment of the present utility model; Fig. 2 a sectional view according to the first embodiment of the present utility model; Fig. 3 is an exploded view according to the first embodiment of the present utility model; Fig. 4 is a schematic representation of the hood according to the first embodiment of the present utility model; Fig. 5 is a schematic diagram of the combustion tube according to another embodiment of the present utility model; Fig. 6 is a schematic diagram of the combustion tube according to another embodiment of the present utility model; Fig. 7 is a schematic diagram of the combustion tube according to another embodiment of the present utility model; Fig. 8 is an assembly diagram of the hood according to the second embodiment of the present utility model; Fig. 9 is an exploded view of the hood according to the second embodiment of the present utility model; Fig. 10 is an assembly diagram of the hood according to another embodiment of the present utility model; Fig. 11 is an assembly diagram of the hood according to the third embodiment of the present utility model; Fig. 12 is an exploded view of the hood according to the third embodiment of the present utility model; Fig. 13 is a plan view of the hood according to the third embodiment of the present utility model; Fig. 14 is an assembly diagram according to the fourth embodiment of the present utility model; Fig. 15 is a sectional view according to the fourth embodiment of the present utility model; Fig. 16 is an exploded view according to the fourth embodiment of the present utility model; List of reference symbols: 1. Combustion tube; 11. first flame outlet hole; 12. second flame outlet hole; 13. third flame outlet hole; 14. fourth flame outlet hole; 111. Gas inlet end; 112. Tube end; 141. First flame outlet section; 142. Second flame outlet section; 2. Hood; 21. Heating area; 22. Infrared radiation surface; 23. Infrared radiation plate; 24. Closed enclosure; 25. Second air flow channel; 26. First air flow channel; 27. Closed opening; 231. first segment; 232. second segment; 241. closed end; 2321. Gas inlet segment; 2322. End segment; 3. Furnace body; 31. Furnace cavity; 32. Support projection; 4. Baking rack; 5. transparent plate; 61. first connecting section; 62. second connecting section. Concrete embodimentsEmbodiment 1

[0010] As in the Fig. 1 to 4, the present utility model discloses an infrared burner comprising: a combustion tube 1, wherein the combustion tube 1 is formed in the shape of a straight tube extending in a front-to-rear direction (ie, in a longitudinal direction), and a plurality of flame outlet holes are arranged on the combustion tube 1 in the front-to-rear direction so that the plurality of flame outlet holes can be distributed at different positions along the longitudinal direction of the combustion tube 1; a hood 2, wherein the hood 2 is located above the combustion tube 1, wherein the hood 2 is provided inside with a heating area 21, wherein the hood 2 comprises an infrared radiation plate 23 on the top and closed envelopes 24 on the left and right sides, and wherein a closed opening 27 is formed below the heating area 21, and wherein an infrared radiation surface 22 is provided on the top of the infrared radiation plate 23.

[0011] In use, the hood 2 and the combustion tube 1 cooperate such that the combustion tube 1 closes the closed opening 27 and allows the flame outlet holes to be located in the heating area 21, so that a burning flame emerging from the flame outlet holes burns in the heating area 21 to burn the infrared radiation plate 23, and the infrared radiation surface 22 provided on the infrared radiation plate 23 radiates infrared rays by being burned in the infrared radiation to heat the food.

[0012] Therefore, when supplied, the gas can be burned at different front and bottom positions in the heating area 21 through the flame outlet holes arranged in the front and rear directions to generate flames. The flame burns in the heating area 21 and directly burns the infrared radiation plate 23 and transfers heat. The heat transfer will make the infrared radiation plate 23 burn red. The reddened infrared radiation surface 22 is directed upward to generate infrared radiation. Through the way of infrared radiation on the food heater, infrared can directly act on the food and has good penetration into the food inside and outside the heater more evenly, preventing the food surface from being scorched and the inside from being cooked by the situation.

[0013] Here, the infrared radiation plate 23 is provided in an upwardly curved shape, the width between the left and right sides of the infrared radiation plate 23 is s1, and the curvature height of the infrared radiation plate 23 is h, where s1>h is satisfied. Preferably, 2*h≤s1≤5*h is satisfied. A plurality of first air flow channels 26 are formed outside the infrared radiation plate 23;

[0014] Therefore, the upwardly curved infrared radiation plate 23 together with the first air flow channel 26 on the infrared radiation plate 23 causes the heat flow from the heating area 21 to flow along the infrared radiation plate 23 to the first air flow channel 26 after rising on the top of the bottom of the infrared radiation plate 23, thereby driving the heat to different positions of the infrared radiation plate 23, so that the infrared radiation plate 23 is heated more evenly, and finally the heat flow leaves the heating area 21 upward through the first air flow channel 26.

[0015] By limiting the left and right widths of the infrared radiation plate 23 and the upwardly curved height of the infrared radiation plate 23, the infrared radiation plate 23 not only has a larger width to cover a larger area of ​​upward infrared radiation, but also has a larger width to cover a larger area of ​​upward infrared radiation. Furthermore, the infrared radiation plate 23 has a smaller height difference, so that the heat flow under the infrared radiation plate 23 can be more easily distributed in a width direction, so that the infrared radiation surface 22 can absorb more heat on both sides of the width to make the overall heat more uniform.

[0016] In addition, the heat flow in the heating area 21 flows upward due to the first air flow channel 26, so that the outgoing heat flow flows upward and directly contacts the food to conduct heat and bake, which improves the baking efficiency by the dual effect of heat conduction and infrared radiation.

[0017] In particular, s1=3.6*h in this embodiment.

[0018] In this embodiment, the first air flow channels 26 are evenly arranged on the infrared radiation plate 23 in a rectangular array, and each of the first air flow channels 26 has the shape of a round hole.

[0019] Preferably, the cross section of the infrared radiation plate 23 in this embodiment is circular arc-shaped in the vertical direction from front to back to form a columnar circular arc-shaped surface and spread outward in an arc shape for the infrared radiation.

[0020] In another embodiment, the cross section of the infrared radiation plate 23 along the vertical direction from front to back may be V-shaped or consist of a plurality of folded edges and the like.

[0021] It should be noted that in order to prevent the heat in the heating area 21 from not fully contacting the infrared radiation plate 23 and quickly flowing out of the first air flow channel 26 so that the infrared radiation surface 22 cannot be reddened, the following restrictions are made: the area of ​​the infrared radiation surface 22 is s2, and the sum of the areas projected onto the infrared radiation surface 22 of each of the first air flow channels 26 is s3, satisfying the requirement: 0.05*s2≤s3≤0.15*s2. By appropriately setting the ratio of the area of ​​the infrared radiation surface 22 to the sum of the areas projected onto the infrared radiation surface 22 of each of the first air flow channels 26, it can be ensured that the heat of the heating area 21 can be sufficiently transferred to the infrared radiation plate 23 to redden the infrared radiation surface 22.

[0022] The width of the closed opening 27 is s4 and the diameter of the combustion tube 1 is d. Preferably, s1 > s4, d ≥ s4, s1 > d. In this embodiment, it is particularly assumed that s1 > 3*s4, d = s4.

[0023] By setting the width of the closed opening 27 to a size corresponding to the diameter of the combustion tube 1, the combustion tube 1 can be effectively fitted into the closed opening 27 to close the closed opening 27, and by setting the infrared radiation plate 23 with a larger width to enlarge the area of ​​infrared radiation and make the radiation effect more uniform.

[0024] The flame outlet hole includes a plurality of second flame outlet holes 12 and a plurality of third flame outlet holes 13 provided on both sides of the top of the combustion tube 1, the plurality of second flame outlet holes 12 being arranged along the longitudinal direction of the combustion tube 1, and the plurality of third flame outlet holes 13 being arranged along the longitudinal direction of the combustion tube 1.

[0025] Thus, the flame ejected from the second flame outlet hole 12 directly heats the left half of the heating area 21, while the flame ejected from the third flame outlet hole 13 directly heats the right half of the heating area 21, thereby the heat flow in the left half of the area is more likely to flow to the left side of the infrared radiation plate 23, and the heat flow in the right half of the area is more likely to flow to the right side of the infrared radiation plate 23, so that the edges can be heated with more heat to make the overall redness of the infrared radiation surface 22 more uniform.

[0026] Preferably, each of the second flame outlet holes 12 and the third flame outlet holes 13 extends along a radial direction of the combustion tube 1 to eject flames in an inclined manner and to increase the pitch of the flames ejected from the second flame outlet holes 12 and the third flame outlet holes 13 to make the heat more uniform and to facilitate processing.

[0027] In another embodiment, as shown in the Fig. 5, the flame outlet hole includes a plurality of first flame outlet holes 11 provided on an upper surface of the combustion tube 1, the plurality of first flame outlet holes 11 being arranged along the longitudinal direction of the combustion tube 1, and the first flame outlet holes 11 being circular holes for directing the flames ejected from the first flame outlet holes 11 upward. Therefore, the flame heats the left and right centers of the heating area 21 and then spreads to the left and right sides by the heat flow to redden the infrared radiation surface 22.

[0028] In another embodiment, as shown in the Fig. 6 and Fig. 7, the flame outlet hole comprises a plurality of fourth flame outlet holes 14 provided on the top of the combustion tube 1, and each of the fourth flame outlet holes 14 is arranged in a longitudinal direction of the combustion tube 1, wherein the fourth flame outlet holes 14 are in Fig. 6 curved holes and the fourth flame outlet holes 14 in Fig. 7 are V-shaped holes, so that the plurality of fourth flame outlet holes 14 located on both sides of the top of the combustion tube 1 are each provided with a first flame outlet portion 141 and a second flame outlet portion 142 and discharge flames upward.Therefore, the flame is ejected from the fourth flame outlet port 14 and covers along the left and right directions, so the flame ejected from the first flame outlet portion 141 directly heats the left half of the heating area 21, while the flame ejected from the second flame outlet portion 142 directly heats the right half of the heating area 21, thereby, the heat flow in the left half of the area is more likely to flow to the left side of the infrared radiation plate 23, and the heat flow in the right half of the area is more likely to flow to the right side of the infrared radiation plate 23, so that the edges can be heated with more heat to make the overall redness of the infrared radiation surface 22 more uniform.

[0029] The heating area 21 is provided with a closed envelope 24 on the left and right sides, so that the closed envelope 24 covers both sides of the heating area 21 and less heat is lost in the heating area 21 through the left and right sides of the infrared radiation plate 23, so that the heat in the infrared radiation plate 23 is transferred more efficiently to the reddening of the infrared radiation surface 22.

[0030] In addition, a second air flow channel 25 is passed through the closed enclosure 24 so that, when the combustion tube 1 is burning, outside air can enter the heating area 21 through the second air flow channel 25 to supplement oxygen, thereby ensuring complete combustion of the gas.

[0031] Preferably, in this embodiment, the closed enclosure 24 is integrally molded onto the infrared radiation plate 23 to form the hood 2, and the hood 2 is made of metal.

[0032] Here, the closed envelope 24 is provided with a closed end 241 abutting against an outer peripheral wall of the combustion tube 1, and the closed end 241 is provided at a position lower than the flame outlet hole to more effectively close the shutter opening 27 by the abutment of the closed end 241 and the outer peripheral wall of the combustion tube 1.

[0033] In this embodiment, the hood 2 is welded to the combustion tube 1 at the closed end 241 to form an inseparable, fixed connection. In another embodiment, the inseparable, fixed connection of the hood 2 and the combustion tube 1 may also be achieved by snap fasteners or the like.

[0034] Preferably, the closed enclosure 24 has the shape of an inclined plate, the inclined upward side of the closed enclosure 24 is connected to the side of the infrared radiation plate 23, and the closed end 241 is provided on the inclined downward side of the closed enclosure 24.

[0035] Therefore, the above structural combination makes the hood 2 and the heating area 21 as a whole similar to a fan-shaped structure, compared with the square structure of the fan-shaped heating area 21 is smaller, the overall structure is more regular, as well as the closed envelope 24 has the effect of directing the heat flow and the flame to the upper part of the infrared radiation plate 23, which is more effective in heating the infrared radiation plate 23 and improves the efficiency of converting the heat energy of the flame into the radiation energy of the infrared radiation plate 23.

[0036] In particular, the closed end 241 and the closed shell 24 are bent in a structure to form a curved transition angle between the two, whereby the transition angle against the outer wall of the combustion tube 1 can realize a lower extrusion stress between the two.

[0037] Preferably, the distance between the two closed ends 241 is set in a downwardly extending and gradually increasing manner so that when the hood 2 and the combustion tube 1 are aligned during assembly, guidance through the extended closed end 241 is possible, which improves the ease and smoothness of assembly.

[0038] In another embodiment, the closed enclosure 24 may not be provided. Example 2

[0039] As in the Fig. 8 and Fig. As shown in FIG. 9, the present utility model discloses an infrared burner having the same main structure as Embodiment 1, except that the first air flow channels 26 are provided in left and right rows on both sides of the upper surface of the infrared radiation plate 23, and the first air flow channels 26 of the respective rows are arranged in a spaced-apart arrangement along a front-to-rear direction. Furthermore, each of the first air flow channels 26 is S-shaped.

[0040] Moreover, the difference between the present embodiment and Embodiment 1 also includes the shape and size of the second air flow channels 25, and the use of the opening of the larger square second air flow channels 25 enables the left and right sides of the heating section 21 to be better connected to the outside world.

[0041] Therefore, when there is excess heat in the heating area 21 (e.g., when the flame intensity in the configured combustion tube is larger), the heat can flow out of the heating area 21 through the second air flow channel 25, while the remaining heat is effectively supplied to achieve the reddening of the infrared radiation surface 22, with the effect that the excess heat prevents the reddening of the infrared radiation surface 22 from becoming uneven.

[0042] Accordingly, the closed enclosure 24 and the infrared radiating plate 23 are detachably connected, and a plurality of first connecting portions 61 are provided on the top surface of the closed enclosure 24 in this embodiment. Accordingly, the infrared radiating plate 23 is provided with a second connecting portion 62 on the left and right sides, respectively, which is connected by aligning the first connecting portion 61 and the second connecting portion 62 with a snap fit or by bolts and nuts.

[0043] Therefore, it is possible to adapt the different closed enclosures to different sizes of the heating area 21 and the combustion tube 1 by exchanging the different enclosures 24 provided with differently distributed, shaped and dimensioned second air flow channels.

[0044] As in Fig. 8, the second air flow channel 25 formed by the hood 2 configured with the combustion tube is larger and can more easily dissipate heat from the heating area 21, while the circular second air flow channel 25 formed by the hood 2 configured with the combustion tube in a Fig. 10, is smaller and reduces the heat emission from the heating area 21. Example 3

[0045] As in the Fig. As shown in FIGS. 11 to 13, the present utility model discloses an infrared burner having the same main structure as Embodiment 2, except that the first air flow channel 26 is arranged differently. Specifically, the infrared radiation plate 23 includes a first segment 231 at the center and second segments 232 located at the front and rear ends of the first segment 231, and the average distance between adjacent first air flow channels 26 on the first segment 231 is larger than the average distance between adjacent first air flow channels 26 on each of the second segments 232. In other words, the first air flow channels 26 on the first segment 231 are sparser, and the first air flow channels 26 on the second segment 232 are denser.

[0046] Therefore, due to the small number of the first air flow channels 26 in the first segment 231, the heat flow formed by the combustion in the center of the combustion tube will flow either forward or backward to the second segment 232, thereby bringing the heat to the second segment 232 to heat the second segment 232, so that the heat energy is more widely scattered to the ends and the uniformity of the infrared radiation surfaces 22 being reddened is improved, so that the radiation is uniform along the longitudinal direction.

[0047] Preferably, the combustion tube 1 comprises a gas inlet end 111 at a front end and a tube end 112 at a rear end, wherein the second segment 232 comprises a gas inlet segment 2321 corresponding to the gas inlet end 111 and an end portion 2322 corresponding to the tube end 112, wherein a distance between an end portion of the gas inlet segment 2321 remote from the first segment 231 and the nearest first air flow channel 26 is k1, while a distance between an end portion of the gas inlet segment 2322 remote from the first segment 231 and the nearest first air flow channel 26 is k2, where k1 < k2.

[0048] It should be noted that the temperature of the heating region 21 near the gas inlet end 111 is lower because the gas-air mixture passing through the front end of the combustion tube is not heated, and thus less energy is available to heat the heating region 21 after combustion. In contrast, the gas-air mixture at the rear end is heated on its way through the combustion tube and is warmer, so more energy is available to heat the heating region 21 after combustion, resulting in a higher temperature of the heating region 21 near the tube end 112.In order to achieve a more uniform temperature in front of and behind the infrared radiation, the first air flow channel 26 on the gas inlet segment 2321 is arranged closer to the end section, so that the heat flow in the heating area 21 can be directed more towards the end section of the gas inlet segment 2321 in order to improve the heat absorbed by the end section of the gas inlet segment 2321 and thus optimize the uniformity. Example 4

[0049] As in the Fig.14 to 16, the present utility model discloses a baking oven comprising an oven body 3 and an infrared burner according to any one of Embodiments 1 to 3, wherein the oven body 3 is provided with an oven cavity 31 open on the top, and the oven body 3 is provided with a baking grid 4 above the oven cavity 31, the infrared burner is provided within the oven cavity 31, and the combustion tube 1 is connected to gas so that the combustion tube 1 can be burned to generate a flame at each of the flame outlet holes.

[0050] Therefore, the food to be fried can be placed on the baking rack 4, and the food can be fried by generating infrared radiation from the red-hot infrared radiation surface 22 by the combustion of the infrared burner.

[0051] The rear end of the combustion pipe 1 is installed by inserting it into the side wall of the furnace body 3.

[0052] In addition, the furnace cavity 31 is provided with a transparent plate 5. The transparent plate 5 has a curved structure, and the longitudinal direction of the transparent plate 5 extends along the front and rear directions. Accordingly, the furnace body 3 is located on the front and rear sides of the transparent plate 5 for installing support protrusions 32, so that the front and rear ends of the transparent plate 5 are supported on the support protrusions 32 to be fixed relative to each other, and the fixed state of the transparent plate 5 is on the top of the hood 2 to cover the infrared radiation plate 23.

[0053] Therefore, the transparent plate 5 is made of transparent material so that the infrared radiation generated from the infrared radiation surface 22 below can be radiated upward through the transparent plate 5, and the garbage falling from above does not fall on the infrared radiation plate 23 under the cover of the transparent plate 5, so as to prevent the garbage from affecting the radiation effect of the infrared radiation surface 22 and clogging the first air flow channel 26.

[0054] The transparent plate 5 can be a glass plate or another high-temperature-resistant polymer plate. Example 5

[0055] An oven having the same main structure as in Embodiment 4, with the difference that the hood 2 and the combustion tube 1 are not fixed connections that are only in contact or not in contact, which can be realized such that the closed end 241 is only close to the combustion tube 1, that is, there is no fixed connection such as a weld or a snap fit or the like between the two.

[0056] Accordingly, the hood 2 and the combustion pipe 1 are directly fixedly installed on the oven, so that the hood 2 and the combustion pipe 1 maintain a stable relative position, and the state shown in any one of Embodiments 1 to 3 is formed under the stable relative position.

[0057] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present utility model. Accordingly, the present utility model is not limited to the embodiments shown herein, but is subject to the widest scope consistent with the principles and novel features disclosed herein.

Claims

[1] Infrared burner, comprising: a combustion tube (1), the combustion tube (1) being provided with a plurality of flame outlet holes, the plurality of flame outlet holes being provided along a longitudinal direction of the combustion tube (1); and a hood (2), the hood (2) comprising a heating area (21), a closed opening (27) connected to the heating area (21), and an infrared radiation plate (23) located above the heating area (21), the infrared radiation plate (23) being made of metal; wherein the hood (2) is connected to the combustion tube (1) through the closed opening (27), wherein the flame outlet hole faces the heating area (21) so that the flame outlet hole is connected to the heating area (21), and wherein the flame outlet hole is used to emit a flame to burn the infrared radiation plate (23) so that the infrared radiation plate (23) is burned red and generates infrared radiation. [2] The infrared burner according to claim 1, wherein the hood (2) comprises two closed envelopes (24) provided on both sides of the infrared radiation plate (23), the closed envelope (24) being provided with a closed end (241) abutting against an outer peripheral wall of the combustion tube (1), and the closed end (241) being provided at a position below the flame outlet hole. [3] An infrared burner according to claim 2, wherein the closed enclosure (24) has the shape of an inclined plate, one side of the closed enclosure (24) being connected to one side of the infrared radiation plate (23), and the closed end (241) being provided on the other opposite side of the closed enclosure (24). [4] Infrared burner according to claim 2, wherein the closed envelope (24) is detachably provided on the infrared radiation plate (23). [5] The infrared burner according to claim 2, wherein the closed enclosure (24) is provided with a plurality of second air flow channels (25), the plurality of second air flow channels (25) being provided along a longitudinal direction of the closed enclosure (24). [6] The infrared burner according to claim 4, wherein the infrared radiation plate (23) is provided with a plurality of first air flow channels (26), the plurality of first air flow channels (26) being provided along a longitudinal direction of the infrared radiation plate (23). [7] The infrared burner according to claim 1, wherein the flame outlet hole comprises a plurality of first flame outlet holes (11) provided on an upper surface of the combustion tube (1), the plurality of first flame outlet holes (11) being arranged along the longitudinal direction of the combustion tube (1), and the first flame outlet holes (11) ejecting flames upward. [8] The infrared burner according to claim 7, wherein the flame outlet hole comprises a plurality of second flame outlet holes (12) and a plurality of third flame outlet holes (13) provided on both sides of the top of the combustion tube (1), the plurality of second flame outlet holes (12) being arranged along the longitudinal direction of the combustion tube (1), the plurality of third flame outlet holes (13) being arranged along the longitudinal direction of the combustion tube (1). [9] The infrared burner according to claim 8, wherein the flame outlet hole comprises a plurality of fourth flame outlet holes (14) provided on the top of the combustion tube (1), the plurality of fourth flame outlet holes (14) being arranged along the longitudinal direction of the combustion tube (1), the plurality of fourth flame outlet holes (14) being located on both sides of the top of the combustion tube (1) and each being provided with a first flame outlet portion (141) and a second flame outlet portion (142). [10] Infrared burner, comprising: a combustion tube (1); an infrared radiation plate (23), wherein the infrared radiation plate (23) is provided above the combustion tube (1) and extends along the longitudinal direction of the combustion tube (1), wherein the infrared radiation plate (23) is provided in an upwardly curved shape, wherein the infrared radiation plate (23) has a width of s1, wherein the infrared radiation plate (23) has a curvature height of h, where: s1 > h, or 2*h≤s1≤5*h, and wherein a plurality of first air flow channels (26) are passed through the infrared radiation plate (23); and a heating region (21), the heating region (21) being formed between the combustion tube (1) and the infrared radiation plate (23); wherein the infrared radiation plate (23) is heated so that an infrared radiation surface (22) provided on the infrared radiation plate (23) is reddened and thus generates infrared radiation. [11] The infrared burner according to claim 10, wherein the infrared radiation plate (23) comprises a first segment (231) and second segments (232) located at both ends of the first segment (231), wherein a distance between two adjacent first air flow channels (26) provided on the first segment (231) is greater than a distance between two adjacent first air flow channels (26) provided on the second segment (232). [12] Infrared burner according to claim 11, wherein the combustion tube (1) comprises a gas inlet end (111) and a tube end (112), wherein the second segment (232) comprises a gas inlet segment (2321) corresponding to the gas inlet end (111) and an end portion (2322) corresponding to the tube end (112). [13] Infrared burner according to claim 12, wherein a distance between an end portion of the gas inlet segment (2321) remote from the first segment (231) and the nearest first air flow channel (26) is k1, while a distance between an end portion of the gas inlet segment (2322) remote from the first segment (231) and the nearest first air flow channel (26) is k2, where k1 < k2. [14] Infrared burner according to claim 10, wherein a cross section of the infrared radiation plate (23) perpendicular to a longitudinal direction of the infrared radiation plate (23) is arcuate. [15] Infrared burner according to claim 10, wherein the first air flow channel (26) is circular or S-shaped. [16] Infrared burner according to claim 10, wherein the area of ​​the infrared radiation surface (22) is s2, wherein the sum of the areas of the first air flow channels (26) projected onto the infrared radiation surface (22) is s3, where: 0.05*s2≤s3≤0.15*s2. [17] Oven, comprising: a furnace body (3); and. an infrared burner according to claim 10; wherein the infrared burner is provided on the furnace body (3). [18] Baking oven according to claim 17, wherein the oven body (3) is provided with a transparent plate (5) in an oven cavity (31), the transparent plate (5) being provided above the infrared radiation plate (23) of the infrared burner. [19] Oven according to claim 17, wherein the infrared radiation plate (23) is installed touchably on the combustion tube (1) via two closed enclosures (24). [20] Oven according to claim 17, wherein the hood (2) and the combustion tube (1) of the infrared burner are installed independently of each other on the oven body (3), the hood (2) not being in contact with the combustion tube (1).

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