Combustor

Abstract

The utility model discloses a combustor, which comprises a combustion part, a burner, a heating part, a heating part, a heating part and a heating part, and is characterized in that the combustion part is arranged above the burner; the protection part is arranged above the combustion part and is connected with the combustion part through a stud; the protection part comprises a high-transmittance plate which is a circular plate and covers the infrared combustion plate; the upper pressing plate is an annular plate and is arranged above the high-transmittance plate; the mounting plate is arranged below the high-transmittance plate and is matched with the upper pressing plate to fix the high-transmittance plate; the combustion part comprises an infrared combustion plate which is arranged above the inner gas mixing cavity; the outer fire cover is annular, a cavity is formed in the outer fire cover, the outer fire cover is arranged above the outer gas mixing cavity, and the cavity of the outer fire cover is communicated with the outer gas mixing cavity; and the mounting plate is connected with the outer fire cover through a stud. The protection part is fixed above the combustion part through the stud, so that foreign matters can be prevented from falling into the combustion part during working.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas stoves, and in particular relates to a burner. Background Art

[0002] In existing infrared gas stoves, in order to prevent the infrared radiation plate from being damaged by external mechanical impact, an alloy mesh is usually placed on the upper surface of the infrared radiation ceramic plate. The setting of the alloy mesh does not have an ideal protective effect on the ceramic plate, especially when soup falls on the stove top, it will still cause the infrared radiation ceramic plate to be damaged; some infrared radiation plates are made of metal.

[0003] Application No. 202321334628.6 discloses a burner, including an atmospheric fire cover; an infrared combustion plate located on the inner or outer side of the atmospheric fire cover; and a high-transmittance plate, which is placed above the infrared combustion plate. The heat generated by the infrared combustion plate passes through the high-transmittance plate to radiate heat to the bottom of the pot. A mounting plate is arranged below the high-transmittance plate, and the mounting plate is connected to the outer fire cover by studs, which is not easy to install. In addition, the unstable gas transmission during the operation of the burner may cause problems such as incomplete combustion.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and the purpose is to provide a burner, in which a protective part is arranged above a combustion part by means of a stud, the stud has high pressure resistance and bending resistance, a firm structure, and can provide stable support, thereby ensuring the stability of the high-transparency plate during operation and preventing safety accidents.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a burner includes a burner head, the burner head includes an inner mixing chamber and an outer mixing chamber, and the burner also includes:

[0007] A combustion part, arranged above the burner;

[0008] The protection part is arranged above the combustion part and connected with the combustion part through a stud.

[0009] The combustion unit comprises:

[0010] An infrared combustion plate is arranged above the inner gas mixing chamber;

[0011] The outer fire cover is annular and has a cavity inside. The outer fire cover is arranged above the outer gas mixing cavity, and the cavity of the outer fire cover is connected to the outer gas mixing cavity;

[0012] The protection part is connected to the outer fire cover via studs.

[0013] Furthermore, the protection part includes:

[0014] A high-transmittance plate is a circular plate, covering the infrared combustion plate;

[0015] The upper pressing plate is an annular plate and is arranged above the high-transparency plate;

[0016] A mounting plate, disposed below the high-transmittance plate and cooperating with the upper pressing plate to fix the high-transmittance plate;

[0017] The mounting plate is connected to the outer fire cover via studs.

[0018] Furthermore, second studs are arranged at intervals on the upper surface of the outer fire cover; the second studs have screw holes;

[0019] A first stud is disposed at the lower portion of the mounting plate; the first stud has a screw hole;

[0020] The first stud and the second stud are fixedly connected by screws;

[0021] The screw hole of the second stud is communicated with the cavity of the outer fire cover.

[0022] Furthermore, the upper pressing plate and the mounting plate are annular plates, which are respectively arranged above and below the high-transparency plate;

[0023] The top wall of the inner ring end of the mounting plate is recessed downward to form a cavity;

[0024] The upper pressing plate is buckled on the mounting plate, and the inner ring end of the upper pressing plate is arranged opposite to the cavity; the inner ring end of the upper pressing plate is buckled on the cavity to form an annular groove; the outer peripheral edge of the high-transmittance plate is clamped in the annular groove;

[0025] A stud is arranged below the cavity of the mounting plate.

[0026] Further, the upper surface of the outer fire cover is an inclined surface extending radially downward from the upper edge of the outer peripheral wall of the outer fire cover to a distance from the infrared combustion plate;

[0027] The second stud is arranged on a portion of the inclined surface of the outer fire cover close to the edge of the outer peripheral wall;

[0028] The distance between the second stud and the inner peripheral wall of the outer fire cover is half the distance between the second stud and the outer peripheral wall of the outer fire cover;

[0029] The upper surface of the screw hole of the second stud is higher than the peripheral edge of the upper surface of the outer fire cover.

[0030] Furthermore, the bottom of the furnace head is connected with an ejector;

[0031] The burner head comprises a first annular wall and a second annular wall arranged on the outer periphery of the infrared combustion plate;

[0032] The second annular wall is arranged on the outer periphery of the first annular wall; the first annular wall and the second annular wall enclose the outer gas mixing chamber; the tops of the first annular wall and the second annular wall are arranged to protrude from the burner head; the burner head between the first annular wall and the second annular wall is arranged to be recessed downward; the ejector is connected to the outer gas mixing chamber;

[0033] The cavity in the outer fire cover is an annular cavity; the first annular wall and the second annular wall are inserted into the annular cavity of the outer fire cover;

[0034] The bottom surface of the peripheral side wall of the annular cavity abuts against the first annular wall and the second annular wall.

[0035] Furthermore, the first annular wall and the second annular wall are provided with multiple diameter reductions from top to bottom between the opposite side walls, and the diameter reduction portion protruding from the furnace head top wall is inserted into the annular cavity;

[0036] The diameter-reducing connection of the second annular wall abuts against the outer peripheral side of the annular cavity opening.

[0037] Furthermore, the diameter of the outer mixing chamber is changed multiple times from bottom to top;

[0038] The second annular wall comprises a first straight ring segment, a second straight ring segment, and a third straight ring segment, the inner diameters of which decrease in sequence from bottom to top; the third straight ring segment protrudes from the top wall of the furnace head and is inserted into the annular cavity, and the reduced diameter connection between the second straight ring segment and the third straight ring segment is in contact with the outer peripheral side of the annular cavity opening;

[0039] The second annular wall includes a fourth straight ring segment and a fifth straight ring segment which are arranged with increasing outer diameters from bottom to top. The fourth straight ring segment extends upward to be arranged opposite to the first straight ring segment and a part of the second straight ring segment, so that the outer mixing chamber is reduced in diameter twice. The fifth straight ring segment is arranged opposite to a part of the second straight ring segment and the third straight ring segment, so that the outer mixing chamber is reduced in diameter twice.

[0040] Furthermore, the outer ring wall of the outer fire cover has a fixing clip extending downward from the bottom;

[0041] A downwardly recessed fixing groove is provided at the diameter-changing connection between the fourth straight-through ring segment and the fifth straight-through ring segment;

[0042] The fixing card extends into the fixing slot.

[0043] Furthermore, the inner diameter of the annular cavity gradually decreases from bottom to top;

[0044] The vertical length of the largest inner diameter portion of the annular cavity is greater than the vertical length of the gradually narrowing portion of the annular cavity.

[0045] Furthermore, the inner annular wall of the outer fire cover includes:

[0046] A first extension wall extending downwardly a short distance from the inner circumferential bottom of the inclined surface of the outer fire cover;

[0047] A second extension wall extending downward from the inner peripheral portion of the bottom of the first extension wall;

[0048] The top wall of the annular cavity is arranged parallel to the inclined surface;

[0049] The top wall of the annular cavity is connected to the inner wall of the first extension wall to form an inclined angle;

[0050] The bottom of the screw hole of the second stud is communicated with the highest point of the top wall of the outer fire cover cavity.

[0051] (1) The utility model uses studs to fix the high-transparent plate. The studs have high compression and bending resistance, a strong structure, can provide stable support, and do not require complicated construction procedures. The installation process is simple and fast. The studs are not easily affected or damaged by the external environment, have a long service life, and reduce the frequency and cost of maintenance and replacement.

[0052] (2) The utility model connects the protection part and the outer fire cover through studs, which increases the connection stability between the protection part and the outer fire cover and ensures the safety of the gas stove during operation.

[0053] (3) The utility model strengthens the connection between the burner head and the outer fire cover by detachably mounting the outer fire cover on the burner head and arranging a fixing card to prevent rotation, thereby ensuring stable cooking.

[0054] (4) The external gas mixing chamber of the utility model can ensure the stable transmission of gas and the stability during operation through multiple diameter changes.

[0055] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0057] Figure 1This is a cross-sectional schematic diagram of the burner of the utility model;

[0058] Figure 2 This is a schematic diagram of the overall structure of the burner of the utility model;

[0059] Figure 3 It is a schematic diagram of the protection part of the utility model;

[0060] Figure 4 This is a schematic diagram of the burner of the utility model with the protection part removed;

[0061] Figure 5 It is a cross-sectional view of the explosion diagram of the utility model;

[0062] Figure 6 It is a cross-sectional view of the side view of the utility model;

[0063] Figure 7 For this utility model Figure 4 Schematic diagram of the enlarged view at A in the middle;

[0064] Figure 8 This is a schematic diagram of the outer peripheral structure of the outer fire cover of the utility model;

[0065] Fig. 9 This is a schematic diagram of the overall cross-sectional structure of the fire transmission channel of the utility model;

[0066] Fig.10 This is a schematic diagram of the inner peripheral structure of the outer fire cover of the utility model;

[0067] Fig.11 This is a schematic diagram of the overall structure of the fire transmission channel of the utility model;

[0068] In the figure: 10, outer fire cover; 110, inclined surface; 101, ignition slot; 1011, ignition slot hole; 102, fire transmission channel; 1021, fire transmission hole; 103, outer fire hole; 1031, fire stabilization hole; 1032, ignition hole; 104, annular cavity; 121, first extension wall; 122, second extension wall; 13, fixing card; 40, infrared combustion plate; 50, high-transmittance plate; 501, smoke exhaust gap; 60, mounting plate; 601, first stud; 602, second stud; 606, card slot; 607, Upper pressure plate; 608, bending portion; 609, buckle; 610, first extension section; 611, second extension section; 612, third extension section; 70, burner head; 705, outer gas mixing chamber; 706, inner gas mixing chamber; 710, second annular wall; 711, first straight ring section; 712, second straight ring section; 713, third straight ring section; 720, first annular wall; 721, fourth straight ring section; 722, fifth straight ring section; 770, fixing groove; 80, ejector; 90, thermocouple; 100, ignition needle.

[0069] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0071] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0072] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] Figures 1 to 11 As shown, a burner is shown. The burner includes a burner head 70, and the burner head 70 includes an inner gas mixing chamber 706 and an outer gas mixing chamber 705. The burner also includes a combustion part and a protection part. The combustion part is arranged above the burner head 70. The protection part is arranged above the combustion part and connected to the combustion part through a stud.

[0074] The combustion part includes an infrared combustion plate 40 and an outer fire cover 10. The infrared combustion plate 40 is arranged above the inner gas mixing chamber 706. The outer fire cover 10 is annular and has a cavity inside. The outer fire cover 10 is arranged above the outer gas mixing chamber 705, and the cavity of the outer fire cover 10 is connected to the outer gas mixing chamber 705. The protection part is connected to the outer fire cover 10 by studs.

[0075] In the utility model, a combustion part combining infrared and atmosphere is adopted, and an annular outer fire cover 10 is arranged on the periphery of the infrared combustion plate 40. This combustion method has the advantages of atmospheric burners and infrared burners, with large heat load and high thermal efficiency, and can reduce exhaust gas emissions and improve environmental protection effects.

[0076] In the present invention, the infrared combustion plate 40 is arranged in the projection below the protection part, and is used to burn the combustible gas and convert it into infrared rays. The outer fire cover 10 is used to burn the combustible gas, and the outer peripheral wall is provided with an outer fire hole 103 for releasing the flame.

[0077] The infrared combustion plate 40 is mainly made of cordierite ceramic plate, iron-chromium-aluminum metal winding, foamed metal, etc. The infrared combustion plate 40 has a certain heat storage characteristic. After the air-fuel mixture is burned in the infrared combustion plate 40, infrared rays are emitted from the upper layer of the infrared combustion plate 40. The incompletely burned gas will continue to burn on the surface of the infrared combustion plate 40 to produce a small flame. Therefore, the heat exchange form of the infrared combustion plate 40 is mainly infrared radiation, supplemented by smoke convection radiation.

[0078] Optionally, the outer fire cover 10 and the infrared combustion plate 40 are arranged close to or spaced apart from each other.

[0079] In the present invention, the outer fire cover 10 and the infrared combustion plate 40 are in close contact with each other, which means that the outer fire cover 10 and the infrared combustion plate 40 are in close contact or close to each other, that is, there is no gap or a very small gap between the outer fire cover 10 and the infrared combustion plate 40, which can ensure the combustion area of ​​the combustion part and improve the temperature uniformity of the bottom of the pot.

[0080] The high-transmittance plate 50 is supported by a mounting plate 60 , and the mounting plate 60 is connected to the outer fire cover 10 .

[0081] An upper pressing plate 607 is disposed above the high-transmittance plate 50 .

[0082] The upper pressing plate 607 is an annular plate, which is coaxially arranged with the high-transparent plate 50, disposed above the high-transparent plate 50, and used to fasten the high-transparent plate 50. The mounting plate 60 is an annular plate, which is coaxially arranged with the high-transparent plate 50, disposed below the high-transparent plate 50, and used to support the high-transparent plate 50.

[0083] By fastening the high-transparent plate 50 with the upper pressing plate 607 and the mounting plate 60, the installation stability of the high-transparent plate 50 can be improved, and the high-transparent plate 50 can be prevented from falling or loosening due to unstable installation, thereby increasing the safety of use. In addition, by supporting the high-transparent plate 50 with the mounting plate 60, a smoke exhaust gap 501 can be formed above the combustion part, so that the smoke generated by the combustion of the combustion part can be discharged, the combustion resistance of the combustion part can be reduced, the air intake of the combustion part can be guaranteed, and the combustible gas in the combustion part can be fully burned.

[0084] Optionally, the high-transmittance plate 50 is made of a material with high infrared transmittance. For example, the transmittance may be above 60%. For example, the high-transmittance plate 50 may be made of microcrystalline glass, microcrystalline ceramics, or microcrystalline ceramic composite materials. Optionally, the high-transmittance plate 50 is made of a high-temperature resistant material.

[0085] The inner diameter of the upper pressing plate 607 is smaller than the outer diameter of the high-transmittance plate 50 .

[0086] The upper pressing plate 607 is disposed on the high-transparent plate 50 to stabilize the high-transparent plate 50. The inner diameter of the upper pressing plate 607 is smaller than the outer diameter of the high-transparent plate 50, so the upper pressing plate 607 can press the entire periphery of the high-transparent plate 50 on the mounting plate 60, thereby ensuring that the high-transparent plate 50 is firmly installed.

[0087] The mounting plate 60 includes a first extension section 610, a second extension section 611, and a third extension section 612. The first extension section 610 extends from the outer ring side to the inner ring side to the outer periphery of the high-transmittance plate 50. The second extension section 611 extends downward from the inner periphery of the first extension section 610 to a distance slightly exceeding the thickness of the high-transmittance plate 50. The third extension section 612 extends radially inward from the lower edge of the second extension section 611 for a short distance.

[0088] The mounting plate 60 is in contact with the entire outer circumference of the high-transparency plate 50 . The mounting plate 60 has a portion extending downward to exceed the lower surface of the high-transparency plate 50 , and then extending radially inward after extending downward, so as to support the high-transparency plate 50 .

[0089] The upper pressure plate 607 cooperates with the mounting plate 60 to form a clamping structure, which can stably mount the high-transparent plate 50 above the combustion part to prevent the high-transparent plate 50 from shaking or loosening during the cooking process, thereby reducing accidental risks.

[0090] The outer peripheral edge of the upper pressing plate 607 is provided with a bending portion 608 and a buckle 609. The bending portion 608 extends downward from the outer ring edge of the upper pressing plate 607 to the lower surface of the outer ring side of the mounting plate 60. The buckle 609 extends radially inward from the lower edge of the bending portion 608 to the mounting plate 60.

[0091] The bent portion 608 of the upper pressing plate 607 wraps the entire periphery of the mounting plate 60 , and the buckle 609 extends from the lower edge of the bent portion 608 to the mounting plate 60 .

[0092] A slot 606 is provided on the lower surface of the first extension section 610 of the mounting plate 60 near the outer peripheral edge of the mounting plate 60 . The buckle 609 extends into the slot 606 .

[0093] The lower surface of the first extension section 610 is provided with an upwardly recessed slot 606, and the buckle 609 extends into the slot 606. The upper pressing plate 607 and the mounting plate 60 can be buckled together, and the high-transparency plate 50 is fixed between the upper pressing plate 607 and the mounting plate 60.

[0094] The vertical distance between the upper pressing plate 607 and the third extending section 612 of the mounting plate 60 is equal to the thickness of the high-transmittance plate 50 .

[0095] The outer peripheral wall of the high-transparent plate 50 is in contact with the first extension section 610 of the mounting plate 60, the outer periphery of the upper surface is in contact with the inner periphery of the upper pressing plate 607, and the outer periphery of the lower surface is in contact with the upper surface of the third extension section 612 of the mounting plate 60. No movable space is left for the high-transparent plate 50, so that the high-transparent plate 50 will not shake or fall during operation.

[0096] The upper surface of the outer fire cover 10 is provided with a second stud 602. The second stud 602 has a screw hole extending from top to bottom. The lower surface of the mounting plate 60 is provided with a first stud 601. The first stud 601 has a screw hole extending from bottom to top. The inner diameter of the screw hole of the second stud 602 is larger than that of the screw hole of the first stud 601.

[0097] In the present invention, the outer fire cover 10 and the mounting plate 60 can be fixed by screws.

[0098] The outer fire cover 10 has a cavity inside, an open bottom, and an outer wall provided with an outer fire hole 103. The bottom surface of the outer fire cover 10 is connected to the burner head 70. The screw hole of the second stud 602 is connected to the cavity.

[0099] In the present invention, the screw hole of the second stud 602 is connected to the cavity of the outer fire cover 10, and the screw can be directly installed from the cavity, which increases the convenience during maintenance or replacement.

[0100] In the present invention, the inner annular cavity 104 in the burner head 70 can provide combustible gas to the combustion part, and the combustible gas burns in the combustion part to release heat.

[0101] The outer fire cover 10 is detachably connected to the burner head 70 .

[0102] The screw hole of the second stud 602 is connected to the cavity of the outer fire cover 10, which increases the convenience during installation. The upper surface of the outer fire cover 10 extends radially downward from the upper edge of the outer peripheral wall to the upper edge of the inner peripheral wall of the outer fire cover 10. The second stud 602 is arranged on the upper surface of the outer fire cover 10 near the edge of the outer peripheral wall. The portion of the second stud 602 near the outer peripheral edge of the upper surface of the outer fire cover 10 extends shorter in the vertical direction than the portion near the inner peripheral edge of the upper surface of the outer fire cover 10. The upper surface of the screw hole of the second stud 602 is higher than the outer peripheral edge of the upper surface of the outer fire cover 10.

[0103] The upper surface of the outer fire cover 10 is an inclined surface 110 extending radially downward, so that the smoke generated when the infrared combustion plate 40 burns can have a wider flow space. There is a smoke exhaust gap 501 between the protection portion and the outer fire cover 10, so that the smoke generated by the combustion of the infrared combustion plate 40 can flow out of the combustion portion, reducing the combustion resistance of the infrared combustion plate 40, thereby ensuring the amount of primary air induced by the infrared combustion plate 40, ensuring that the infrared combustion plate 40 burns fully, and then ensuring that the infrared combustion plate 40 can emit infrared rays. The high-temperature smoke discharged from the smoke exhaust gap 501 can also flow upward to the bottom of the pot, continue to convect heat exchange with the bottom of the pot, and improve the thermal efficiency of the combustion structure.

[0104] By arranging the second stud 602 near the outer peripheral edge of the upper surface of the outer fire cover 10, a higher smoke exhaust gap 501 can be formed with less material, so that the smoke generated by the combustion of the infrared combustion plate 40 can be discharged more quickly to maintain stable combustion.

[0105] The bottom of the burner 70 is connected to an ejector 80. The burner 70 includes a first annular wall 720 and a second annular wall 710 arranged on the outer periphery of the infrared combustion plate 40; the second annular wall 710 is arranged on the outer periphery of the first annular wall 720. The first annular wall 720 and the second annular wall 710 enclose the outer gas mixing chamber 705. The tops of the first annular wall 720 and the second annular wall 710 are protruding from the burner 70. The burner 70 between the first annular wall 720 and the second annular wall 710 is recessed downward. The ejector 80 is in communication with the outer gas mixing chamber 705. The cavity in the outer fire cover 10 is an annular cavity 104. The first annular wall 720 and the second annular wall 710 are inserted into the annular cavity 104 of the outer fire cover 10.

[0106] The first annular wall 720 and the second annular wall 710 are protrudingly disposed on the top of the burner head 70 to support the outer fire cover 10. The outer fire cover 10 is provided with combustible gas through the outer gas mixing cavity 705 formed between the first annular wall 720 and the second annular wall 710. The burner head 70 between the first annular wall 720 and the second annular wall 710 is recessed downward to form the bottom wall of the outer gas mixing cavity 705, which is used to provide a channel for the combustible gas to be transmitted upward.

[0107] The first annular wall 720 and the second annular wall 710 are arranged to reduce their diameters from top to bottom between opposite side walls, and the reduced diameter portions of the first annular wall 720 and the second annular wall 710 protruding from the top wall of the furnace head 70 are inserted into the annular cavity 104 .

[0108] The opposite side walls of the first annular wall 720 and the second annular wall 710 decrease in diameter from top to bottom, so the accommodation space of the external gas mixing chamber 705 is reduced multiple times from bottom to top. In the process of the combustible gas being transferred from the position with a large accommodation space of the external gas mixing chamber 705 to the position with a small accommodation space, the combustible gas can be fully mixed to maintain the combustion stability of the burner.

[0109] The inner diameter of the outer gas mixing chamber 705 is set to change diameter multiple times from bottom to top. The second annular wall 710 includes a first straight ring segment 711, a second straight ring segment 712, and a third straight ring segment 713, which are arranged with inner diameters decreasing in sequence from bottom to top; the third straight ring segment 713 protrudes from the top wall of the furnace head 70 and is inserted into the annular cavity 104, and the reduced diameter connection between the second straight ring segment 712 and the third straight ring segment 713 is in contact with the outer peripheral side of the opening of the annular cavity 104. The second annular wall 710 includes a fourth straight ring segment 721 and a fifth straight ring segment 722 which are arranged with increasing outer diameters from bottom to top. The fourth straight ring segment 721 extends upward to be arranged opposite to the first straight ring segment 711 and a part of the second straight ring segment 712, so that the outer mixing chamber 705 is reduced in diameter twice. The fifth straight ring segment 722 is arranged opposite to a part of the second straight ring segment 712 and the third straight ring segment 713, so that the outer mixing chamber 705 is reduced in diameter once.

[0110] The outer mixing chamber 705 is reduced in length three times, and the combustible gas is compressed and mixed three times. The combustible gas is introduced into the outer mixing chamber 705 from the ejector 80, and is introduced into the second straight ring segment 712 and the fourth straight ring segment 721 from the first straight ring segment 711 and the fourth straight ring segment 721, and is compressed and mixed for the first time. The combustible gas enters the second straight ring segment 712 and the fifth straight ring segment 722 from the second straight ring segment 712 and the fourth straight ring segment 721, and is compressed and mixed for the second time. The combustible gas enters the third straight ring segment 713 and the fifth straight ring segment 722 from the second straight ring segment 712 and the fifth straight ring segment 722, and is compressed and mixed for the third time. Finally, the combustible gas is transmitted upward to the annular cavity 104 for combustion.

[0111] The outer ring wall of the outer fire cover 10 has a fixing clip 13 extending downward from the bottom. The reducing connection between the fourth straight ring segment 721 and the fifth straight ring segment 722 is provided with a fixing groove 770 recessed downward. The fixing clip 13 extends into the fixing groove 770 .

[0112] The fixing clip 13 extends into the fixing groove 770 to prevent the outer fire cover 10 from rotating relative to the burner head 70 during operation, thereby preventing potential safety hazards.

[0113] The inner diameter of the cavity of the outer fire cover 10 gradually decreases from bottom to top.

[0114] After the combustible gas enters the annular cavity 104, the combustible gas can be fully mixed again because the inner diameter of the annular cavity 104 gradually decreases.

[0115] The inner annular wall of the outer fire cover 10 includes a first extension wall 121 and a second extension wall 122. The first extension wall 121 extends downward a short distance from the inner circumferential bottom of the inclined surface 110 of the outer fire cover 10. The second extension wall 122 extends downward from the inner circumferential portion of the bottom of the first extension wall 121. The top wall of the cavity of the outer fire cover 10 is arranged parallel to the inclined surface 110. The top wall of the cavity of the outer fire cover 10 is connected to the inner wall of the first extension wall 121 to form an inclined angle. The bottom of the screw hole of the second stud 602 is connected to the highest point of the top wall of the cavity of the outer fire cover 10.

[0116] The first extension wall 121 and the top wall of the annular cavity 104 are arranged at an inclination, so that the combustible gas at the top of the annular cavity 104 can rise along the inclined surface and enter the outer fire hole 103 to ensure sufficient combustion.

[0117] In the utility model, a fire transfer channel 102 extending radially is provided on the outer fire cover 10, one end of the fire transfer channel 102 corresponds to the infrared combustion plate 40, and the other end passes through the outer fire cover 10 and corresponds to the outer periphery of the outer fire cover 10. An annular cavity 104 extending circumferentially of the outer fire cover 10 is provided inside the outer fire cover 10.

[0118] An ignition needle 100 is provided at one end of the fire transfer channel 102 close to the infrared combustion plate 40, and the working end of the ignition needle 100 corresponds to the through hole of the fire transfer channel 102. When the burner is working, the injector 80 delivers gas to the burner head 70, and then the burner head 70 transmits the gas to the infrared combustion plate 40 and the outer fire cover 10 through the inner mixing chamber 706 and the outer mixing chamber 705. The ignition needle 100 releases an electric spark to ignite the gas at one end of the fire transfer channel 102 close to the infrared combustion plate 40, and then transmits the flame to the infrared combustion plate 40 and the outer fire cover 10 through the fire transfer channel 102, so that the flame spreads all over the infrared combustion plate 40 and the outer periphery of the outer fire cover 10.

[0119] The fire transmission channel 102 can ignite the infrared combustion plate 40 and the outer fire cover 10 at the same time, or can only ignite the infrared combustion plate 40. During daily use, the user needs to adjust the size of the flame according to his or her actual needs.

[0120] When the burner is working in a low-fire state, the ejector 80 transfers gas to the burner head 70, and the gas only passes through the inner gas mixing chamber 706, a part of which provides gas to the infrared combustion plate 40, and the other part provides gas to the fire transmission channel 102. The ignition needle 100 releases an electric spark to ignite the gas in the fire transmission channel 102, and then transmits the flame to the infrared combustion plate 40 through the fire transmission channel 102 to ignite the infrared combustion plate 40; when the burner is working in a high-fire state, the ejector 80 transfers gas to the burner head 70, and the gas Through the inner mixing chamber 706 and the outer mixing chamber 705, a part of the gas in the inner mixing chamber 706 provides gas to the infrared combustion plate 40, and the other part provides gas to the fire transfer channel 102, and the outer mixing chamber 705 provides gas to the outer fire cover 10. The ignition needle 100 releases an electric spark to ignite the gas in the fire transfer channel 102, and then transfers the flame to the infrared combustion plate 40 through one end of the fire transfer channel 102 to ignite the infrared combustion plate 40, and the other end transfers the flame to the outer fire cover 10 to ignite the outer fire cover 10.

[0121] The fire transfer channel 102 is set at a certain inclination angle, and extends upward along the direction from the outer fire cover 10 to the axis of the outer fire cover 10, to ensure that the height of the through hole at one end of the fire transfer channel 102 close to the infrared combustion plate 40 is at least higher than the top of the infrared combustion plate 40, so that the flame transmitted from the fire transfer channel 102 can cover the top of the infrared combustion plate 40, thereby further improving the ignition efficiency.

[0122] In the utility model, the height of the outer fire cover 10 is higher than the height of the infrared combustion plate 40, and the top of the outer fire cover 10 is provided with a frustum surface extending downwardly inclined in the direction close to the axis of the outer fire cover 10, and the end of the fire transfer channel 102 close to the axis of the outer fire cover 10 protrudes from the frustum surface toward the infrared combustion plate 40, so that the fire transfer channel 102 as a whole is higher than the top of the infrared combustion plate 40, so as to improve the ignition efficiency.

[0123] A fire transfer hole 1021 is provided inside the fire transfer channel 102 . The fire transfer hole 1021 is communicated with the annular cavity 104 of the outer fire cover 10 for transferring the fuel gas into the fire transfer channel 102 .

[0124] A plurality of fire transfer holes 1021 are arranged at intervals along the radial extension direction of the outer fire cover 10; and the fire transfer holes 1021 close to the axis of the outer fire cover 10 extend obliquely from bottom to top in the direction close to the axis of the outer fire cover 10; the fire transfer holes 1021 away from the axis of the outer fire cover 10 extend obliquely from bottom to top in the direction away from the axis of the outer fire cover 10; the fire transfer hole 1021 in the middle of the fire transfer channel 102 extends vertically along the axial direction of the outer fire cover 10.

[0125] The extension directions of both ends of the fire transfer channel 102 are inclined toward both ends, so that the gas can be transferred to both ends when entering the fire transfer channel 102, thereby extending the distance of the gas transferred to both ends and further improving the fire transfer efficiency.

[0126] The burner also includes a plurality of external fire holes 103 arranged at intervals along the outer periphery of the external fire cover 10, which are connected to the annular cavity 104. In the utility model, the external fire holes 103 extend downward from the top of the external fire cover 10 in two rows, and the two rows of external fire holes 103 are staggered.

[0127] The outer fire hole 103 near the top of the outer fire cover 10 extends obliquely from top to bottom along the direction close to the axis of the outer fire cover 10; the outer fire hole 103 far from the top of the outer fire cover 10, the part close to the outer periphery of the outer fire cover 10 is a cavity extending obliquely from bottom to top along the direction close to the axis of the outer fire cover 10, and the part away from the outer periphery of the outer fire cover 10 is a through hole extending obliquely from top to bottom along the direction close to the axis of the outer fire cover 10 from the bottom of the cavity at one end of the axis of the outer fire cover 10.

[0128] The outer fire holes 103 near the top of the outer fire cover 10 can directly transfer the flame upward. In order to prevent the two rows of flames from overlapping, the flames of the other row of outer fire holes 103 need to be given a downward trend when the flames are ejected so that the flames can extend a certain distance in the horizontal direction and then be transferred upward, so as to separate the two rows of flames.

[0129] The burner also includes a thermocouple 90, which is located on the outside of the outer fire cover 10, and also includes a fire stabilizing hole 1031 arranged on the outer peripheral wall of the outer fire cover 10 on the side of the fire transfer channel 102 away from the infrared combustion plate 40, including multiple fire stabilizing holes 1031 arranged circumferentially along the outer fire cover 10, at least some of which extend to below the outer fire hole 103, and the thermocouple 90 is set at a position corresponding to the fire stabilizing hole 1031.

[0130] Thermocouple 90 is used to realize flameout protection. In the prior art, thermocouple 90 is generally installed at the fire outlet position of infrared combustion plate 40. When overflow occurs, if the overflow is too large, because the outer fire cover 10 has a large diameter, first the flame of infrared combustion plate 40 is extinguished, and the thermocouple 90 closes the electromagnetic valve after no flame burning. If the infrared combustion plate 40 is fully protected, when the overflow is too large, the infrared combustion plate 40 burns stably, but the outer fire cover 10 may be extinguished at this time. At this time, if the outer fire hole 103 of the outer fire cover 10 and the infrared combustion plate 40 is also blocked, the electromagnetic valve is not closed, and the infrared combustion plate 40 burns stably, but the outer fire cover 10 leaks and cannot be ignited. Therefore, the thermocouple 90 is arranged on the outside of the outer fire cover 10. When the outer fire cover 10 is extinguished, the flame corresponding to the thermocouple 90 is also extinguished, and then the electromagnetic valve is closed to avoid air leakage in the burner.

[0131] During actual use, there are usually situations where only the infrared combustion plate 40 burns while the outer fire cover 10 does not burn during the use of a low fire. At this time, the thermocouple 90 arranged on the outside of the outer fire cover 10 will not be burned by the flame of the outer fire cover 10, which will cause the solenoid valve to close incorrectly. At this time, a fire stabilizing hole 1031 is provided, corresponding to the thermocouple 90. The fire stabilizing hole 1031 is communicated with the annular cavity 104. When the infrared combustion plate 40 burns, the flame will also be transmitted to the fire stabilizing hole 1031, and then the fire stabilizing hole 1031 will spray flame to the thermocouple 90 to burn the thermocouple 90, so as to achieve the effect of avoiding the solenoid valve from closing incorrectly when the outer fire cover 10 does not burn.

[0132] The fire transfer channel 102 in the utility model extends obliquely from bottom to top along the outer fire cover 10 toward the direction of the axis of the outer fire cover 10. On the one hand, the fire transfer channel 102 away from the axis of the outer fire cover 10 transfers flame downward, and the fire stabilizing hole 1031 is arranged below the fire transfer channel 102, which is convenient for igniting the gas ejected from the fire stabilizing hole 1031. On the other hand, the fire transfer channel 102 close to the axis of the outer fire cover 10 transfers flame upward, which further improves the ignition efficiency of the infrared combustion plate 40.

[0133] In the utility model, an ignition groove 101 is provided at one end of the fire transmission channel 102 close to the infrared combustion plate 40. The ignition groove 101 is U-shaped and extends from the inner wall of the fire transmission channel 102 to the outer wall. The notch of the ignition groove 101 faces the infrared combustion plate 40, and an ignition groove hole 1011 connected to the interior of the outer fire cover 10 is provided on the bottom of the ignition groove 101.

[0134] The ignition groove 101 is wider, which can increase the air flow in the ignition groove 101 and improve the success rate of ignition and flame transmission to the infrared combustion plate 40.

[0135] A U-shaped cavity is formed between the outer wall and the inner wall of the outer fire cover 10, which is an annular cavity 104. The ignition groove 101 extends from the inner wall of the fire transmission channel 102 along the circumference of the outer fire cover 10 to both sides of the fire transmission channel 102. The ignition groove hole 1011 extends from the bottom of the ignition groove 101 along the radial direction away from the axial direction of the outer fire cover 10 and is connected to the annular cavity 104 of the outer fire cover 10.

[0136] The ignition needle 100 is arranged on both sides of the ignition groove 101, and the working end of the ignition needle 100 corresponds to the ignition groove 101. It also includes an ignition hole 1032, which is arranged on the inner periphery of the outer fire cover 10 and on the side of the fire transfer channel 102 close to the ignition needle 100, and is connected to the interior of the outer fire cover 10; the ignition hole 1032 is arranged below the working end of the ignition needle 100 and is inclined upward in the direction close to the infrared combustion plate 40.

[0137] One or more ignition holes 1032 may be provided, and the ignition holes 1032 face the working end of the ignition needle 100. The extension direction of the electric spark at the working end of the ignition needle 100 is unstable, and transmitting airflow to the working end of the ignition needle 100 in multiple directions can improve the ignition success rate.

[0138] The ignition groove 101 extends obliquely upward in a direction close to the axis of the outer fire cover 10 , and the notch of the ignition groove 101 is higher than the top of the infrared combustion plate 40 , or is flush with the top of the infrared combustion plate 40 .

[0139] The notch is set higher than the infrared combustion plate 40 so that the flame can be transferred to the top of the infrared combustion plate 40, thereby igniting the infrared combustion plate 40, avoiding the flame of the notch from burning the outer wall of the infrared combustion plate 40, thereby causing the problem of low ignition efficiency.

[0140] The distance between one end of the fire transfer channel 102 above the ignition groove 101 close to the axis of the outer fire cover 10 and the axis of the outer fire cover 10 is smaller than the distance between one end of the fire transfer channel 102 below the ignition groove 101 close to the axis of the outer fire cover 10 and the axis of the outer fire cover 10.

[0141] The fire transfer channel 102 is longer at the top and shorter at the bottom. On the one hand, it can prevent the flame ejected from the ignition groove 101 from spreading upward before reaching the infrared combustion plate 40, resulting in reduced fire transfer efficiency or even ignition failure. Extending the upper end of the fire transfer channel 102 can allow the flame to be transferred to the infrared combustion plate 40 in a more concentrated manner; on the other hand, the lower end of the fire transfer channel 102 is shorter to avoid contact with the outer periphery of the infrared combustion plate 40.

[0142] The top of the outer fire cover 10 is provided with a truncated table surface extending downwardly along the direction close to the axis, and one end of the fire transmission channel 102 close to the axis of the outer fire cover 10 protrudes from the truncated table surface toward the infrared combustion plate 40;

[0143] The fire transfer channel 102 is close to one end of the axis of the outer fire cover 10, and extends radially along the outer fire cover 10 on both sides. The top gradually decreases in width along the extension direction from bottom to top, and the bottom is set as a plane extending radially along the outer fire cover 10.

[0144] The bottom of the ignition groove 101 is arc-shaped, which is the same as the extension direction of the inner wall of the outer fire cover 10. The direction of the ignition groove hole 1011 corresponds to the axis of the outer fire cover 10, so that the entire ignition groove 101 forms a shape with a wide bottom and a narrow groove mouth. When the fire transfer channel 102 transfers the flame to the infrared combustion plate 40, the flame can be transferred to the position of the infrared combustion plate 40 more concentratedly, thereby improving the success rate of ignition of the infrared combustion plate 40.

[0145] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A burner, comprising a burner head (70), wherein the burner head (70) comprises an inner gas mixing chamber (706) and an outer gas mixing chamber (705), characterized in that: The burner further comprises: A combustion part, arranged above the burner; A protection part, arranged above the combustion part and connected to the combustion part through a stud; The protection unit includes: A high-transparent plate (50) is a circular plate, covering the combustion part; An upper pressing plate (607) is an annular plate and is disposed above the high-transmittance plate (50); A mounting plate (60) is disposed below the high-transmittance plate (50) and cooperates with an upper pressing plate (607) to fix the high-transmittance plate; The combustion unit comprises: An infrared combustion plate (40) is disposed above the inner gas mixing chamber (706); The outer fire cover (10) is annular and has a cavity inside. The outer fire cover (10) is arranged above the outer gas mixing cavity (705), and the cavity of the outer fire cover (10) is connected to the outer gas mixing cavity (705); The mounting plate (60) is connected to the outer fire cover (10) via studs.

2. A burner according to claim 1, characterized in that: Second studs (602) are arranged at intervals on the upper surface of the outer fire cover (10); the second studs (602) have screw holes; A first stud (601) is provided at the lower part of the mounting plate (60); the first stud (601) has a screw hole; The first stud (601) and the second stud (602) are fixedly connected by screws; The screw hole of the second stud (602) is in communication with the cavity of the outer fire cover (10).

3. A burner according to claim 2, characterized in that: The upper pressing plate (607) and the mounting plate (60) are annular plates, and are respectively arranged above and below the high-transmittance plate (50); The top wall of the inner ring end of the mounting plate (60) is recessed downward to form a cavity; The upper pressing plate (607) is buckled on the mounting plate (60), and the inner ring end of the upper pressing plate (607) is arranged opposite to the cavity; the inner ring end of the upper pressing plate (607) is buckled on the cavity to form an annular groove (603); the outer peripheral edge of the high-transmittance plate (50) is clamped in the annular groove (603); A stud is arranged below the cavity of the mounting plate (60).

4. A burner according to claim 3, characterized in that: The upper surface of the outer fire cover (10) is an inclined surface (110) extending radially downward from the upper edge of the outer peripheral wall of the outer fire cover (10) to a distance from the infrared combustion plate (40); The second stud (602) is arranged on a portion of the inclined surface (110) of the outer fire cover (10) close to the edge of the outer peripheral wall; The distance between the second stud (602) and the inner peripheral wall of the outer fire cover (10) is half the distance between the second stud (602) and the outer peripheral wall of the outer fire cover (10); The upper surface of the screw hole of the second stud (602) is higher than the outer peripheral edge of the upper surface of the outer fire cover (10).

5. A burner according to any one of claims 1 to 4, characterized in that: The bottom of the furnace head (70) is connected to an ejector (80); The burner head (70) comprises a first annular wall (720) and a second annular wall (710) arranged on the outer periphery of the infrared combustion plate (40); The second annular wall (710) is arranged on the outer periphery of the first annular wall (720); the first annular wall (720) and the second annular wall (710) enclose the external gas mixing chamber (705); the tops of the first annular wall (720) and the second annular wall (710) are arranged to protrude from the burner head (70); the burner head (70) between the first annular wall (720) and the second annular wall (710) is arranged to be recessed downwards; the ejector (80) is in communication with the external gas mixing chamber (705); The cavity inside the outer fire cover (10) is an annular cavity (104); the first annular wall (720) and the second annular wall (710) are inserted into the annular cavity (104) of the outer fire cover (10); The bottom surface of the peripheral side wall of the annular cavity (104) abuts against the first annular wall (720) and the second annular wall (710).

6. A burner according to claim 5, characterized in that: The first annular wall (720) and the second annular wall (710) are arranged to reduce their diameters multiple times from top to bottom between the opposite side walls, and the reduced diameter portion protruding from the top wall of the furnace head (70) is inserted into the annular cavity (104); The diameter-reducing connection of the second annular wall (710) abuts against the outer peripheral side of the opening of the annular cavity (104).

7. A burner according to claim 6, characterized in that: The diameter of the outer gas mixing cavity (705) is changed multiple times from bottom to top; The second annular wall (710) comprises a first straight-through ring segment (711), a second straight-through ring segment (712), and a third straight-through ring segment (713) whose inner diameters decrease in sequence from bottom to top; the third straight-through ring segment (713) protrudes from the top wall of the furnace head (70) and is inserted into the annular cavity (104); the reduced diameter connection between the second straight-through ring segment (712) and the third straight-through ring segment (713) is in contact with the outer peripheral side of the opening of the annular cavity (104); The second annular wall (710) comprises a fourth straight ring segment (721) and a fifth straight ring segment (722) whose outer diameters are successively increased from bottom to top, and the fourth straight ring segment (721) extends upward to be arranged opposite to the first straight ring segment (711) and a part of the second straight ring segment (712), so that the outer gas mixing cavity (705) is reduced in diameter twice, and the fifth straight ring segment (722) is opposite to a part of the second straight ring segment (712) and the third straight ring segment (712). The ring segments (713) are arranged relative to each other, so that the outer gas mixing cavity (705) is reduced in diameter twice.

8. A burner according to claim 7, characterized in that: The outer ring wall of the outer fire cover (10) has a fixing clip (13) extending downward from the bottom; A downwardly recessed fixing groove (770) is provided at the diameter-reducing connection point between the fourth straight-through ring segment (721) and the fifth straight-through ring segment (722); The fixing card (13) extends into the fixing slot (770).

9. A burner according to claim 8, characterized in that: The inner diameter of the annular cavity (104) gradually decreases from bottom to top; The vertical length of the largest inner diameter portion of the annular cavity (104) is greater than the vertical length of the gradually reduced inner diameter portion of the annular cavity (104).

10. A burner according to claim 9, characterized in that: Second studs (602) are arranged at intervals on the upper surface of the outer fire cover (10); the second studs (602) have screw holes; The inner annular wall of the outer fire cover (10) comprises: A first extension wall (121) extending downwards a short distance from the inner circumferential bottom of the inclined surface (110) of the outer fire cover (10); A second extension wall (122) extending downward from the inner peripheral portion of the bottom of the first extension wall (121); The top wall of the annular cavity (104) is arranged parallel to the inclined surface (110); The top wall of the annular cavity (104) is connected to the inner wall of the first extension wall (121) to form an inclined angle; The bottom of the screw hole of the second screw bolt (602) is connected to the highest point of the top wall of the cavity of the external fire cover (10).

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