Burner and cooking hob

Abstract

The application discloses a burner and a combustion stove, wherein the burner comprises a burner body and a flow guide ring, the inside of the burner body is formed with a gas channel, and the burner body is provided with an inner ring fire hole and an outer ring fire hole which are communicated with the gas channel respectively, the outer ring fire hole is arranged outside the inner ring fire hole, the burner body is further formed with a supplementary gas passage which is independent of the gas channel, the supplementary gas passage comprises an air inlet on the outer side wall of the burner body and an air outlet between the inner ring fire hole and the outer ring fire hole, the flow guide ring is arranged at the air outlet and cooperates with the inner wall of the supplementary gas passage to define an inner ring supplementary gas outlet and an outer ring supplementary gas outlet which respectively flow towards the inner ring fire hole and the outer ring fire hole. The technical scheme can realize the phenomenon of reducing the secondary air mutual competition between the flame at the inner ring fire hole of the burner and the flame at the outer ring fire hole, and improve the combustion efficiency of the burner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas burners, in particular to a burner and a combustion stove. BACKGROUND

[0002] With the continuous improvement of cooking technology, the requirements for burners are also getting higher and higher. It is also necessary to improve the combustion efficiency of the burner.

[0003] The burner generally has an inner fire hole and an outer fire hole to form the effect of inner ring combustion and outer ring combustion on the cooker. However, the flame at the inner fire hole and the flame at the outer fire hole in the prior art will compete for secondary air when the secondary air is supplemented, resulting in poor combustion efficiency of the burner. SUMMARY

[0004] The embodiments of the present application provide a burner and a combustion stove, which can reduce the phenomenon of mutual competition for secondary air between the flame at the inner ring fire hole and the flame at the outer ring fire hole of the burner, and improve the combustion efficiency of the burner.

[0005] In a first aspect, the embodiments of the present application provide a burner, which comprises:

[0006] a burner body, which is internally formed with a gas channel and is provided with an inner ring fire hole and an outer ring fire hole in communication with the gas channel, respectively, the outer ring fire hole is arranged outside the inner ring fire hole, the burner body is further formed with a gas supplement channel independent of the gas channel, the gas supplement channel comprises an air inlet on the outer side wall of the burner body and an air outlet between the inner ring fire hole and the outer ring fire hole; and

[0007] a flow guide ring, which is arranged at the air outlet and cooperates with the inner wall of the gas supplement channel to define an inner ring gas supplement opening and an outer ring gas supplement opening flowing towards the inner ring fire hole and the outer ring fire hole, respectively.

[0008] In some embodiments, a mounting bracket is further included, the mounting bracket has two connecting portions and a first fixing portion, and the flow guide ring is connected to the first fixing portion;

[0009] the burner body comprises two burner monomers arranged in two parts, one of the burner monomers is connected to one of the connecting portions, and one of the burner monomers is formed with the inner ring fire hole, and the other of the burner monomers is formed with the outer ring fire hole;

[0010] the inside of each of the burner monomers is formed as the gas channel, and the gap between the two burner monomers is formed as the gas supplement channel.

[0011] In some embodiments, the mounting bracket comprises a seat body and at least two connecting legs connected to the seat body, the connecting legs extend in the height direction of the burner and have the two connecting portions and the first fixing portion, and the two burner units are arranged in the extending direction of the connecting legs.

[0012] The air supplement channel is formed by the gap between the two burner units in the height direction of the burner.

[0013] In some embodiments, the flow guide ring comprises a flow guide body and a first connecting leg connected to the outer edge of the flow guide body, the flow guide body is arranged at the air outlet, and the first connecting leg is connected to the first fixing portion.

[0014] The flow guide body has an outer edge and an inner edge, the outer edge cooperates with the inner wall of the air supplement channel to define the outer ring air supplement opening, and the inner edge cooperates with the inner wall of the air supplement channel to define the inner ring air supplement opening.

[0015] The flow guide body is arranged downwardly in the direction from the outer edge to the inner edge.

[0016] In some embodiments, the first connecting leg and the surface of the connecting portion press and fix the burner unit with the inner ring flame hole.

[0017] In some embodiments, in the height direction of the burner, the flow guide body is above the inner ring flame hole, and the projection of the inner ring flame hole on the horizontal plane is within the projection area of the flow guide body on the same horizontal plane.

[0018] In some embodiments, the flow guide ring has an outer edge and an inner edge.

[0019] In the height direction of the burner, the distance between the upper surface of the part of the burner unit constituting the inner ring flame hole and the inner edge is greater than 0 mm and less than or equal to 8 mm.

[0020] In the height direction of the burner, the distance between the lower surface of the part of the burner unit constituting the outer ring flame hole and the outer edge is greater than 0 mm and less than or equal to 15 mm.

[0021] In the radial direction of the burner unit, the distance between the end surface of the inner ring flame hole and the inner edge is greater than or equal to 0 mm and less than or equal to 5 mm.

[0022] In the radial direction of the burner unit, the distance between the end surface of the outer ring flame hole and the outer edge is greater than or equal to 10 mm and less than or equal to 30 mm.

[0023] In some embodiments, the oil cup is further provided, which is fixed to the mounting bracket and located inside the inner ring fire hole, and a receiving cavity for receiving dirt is formed in the oil cup.

[0024] In some embodiments, the mounting bracket comprises a seat body, the oil cup comprises a cup body and a handle part, the cup body is fixed to the seat body, the handle part is connected to the cup body and extends away from the seat body, and the receiving cavity is formed between the outer peripheral surface of the handle part and the inner side wall of the cup body.

[0025] In some embodiments, the mounting bracket comprises a seat body, the outer edge of the oil cup is formed with a support outer edge, the support outer edge is hung on the overlapping edge of the seat body, the first guide surface is formed on one side of the support outer edge close to the seat body, and the second guide surface is formed on the overlapping edge of the seat body and guided matched with the first guide surface.

[0026] In some embodiments, a thermocouple and an igniter are further provided, which are fixed to the mounting bracket, and the flow guide ring is provided with an avoiding hole for the thermocouple and the igniter to pass through.

[0027] In some embodiments, a fixing bracket is further provided, and the thermocouple and the igniter are installed on the fixing bracket.

[0028] The mounting bracket comprises a seat body, at least two connecting legs and a connecting rib, the at least two connecting legs are connected to the seat body, the connecting rib is connected to the seat body and / or the connecting legs, the connecting legs extend in the height direction of the burner and have the two connecting parts and the first fixing part, and the connecting rib has a second fixing part.

[0029] The fixing bracket is connected to the second fixing part.

[0030] In some embodiments, the connecting rib further has a positioning protrusion, and the fixing bracket is provided with a positioning hole matched with the positioning protrusion.

[0031] In some embodiments, the fixing bracket comprises a rack body and two clamping springs, the rack body is connected to the second fixing part, and one of the clamping springs is used for clamping or releasing the thermocouple, and the other clamping spring is used for clamping or releasing the igniter.

[0032] In some embodiments, the connecting rib is connected between the two connecting legs.

[0033] In some embodiments, the mounting bracket comprises a base body and at least two connecting legs connected to the base body, the connecting legs extend in the height direction of the burner and have the two connecting portions, the first fixing portion and a third fixing portion, and the two burner units are arranged in the extension direction of the connecting legs in a spaced manner;

[0034] The burner further comprises a cover, the cover comprises a cover body and at least two second connecting legs connected to the outer edge of the cover body, one of the second connecting legs is connected to the third fixing portion, and the other of the second connecting legs is connected to the connecting portion to hold the two burner units in cooperation with the connecting legs.

[0035] In some embodiments, the mounting bracket comprises a base body and at least two connecting legs connected to the base body, the connecting legs have the two connecting portions and the first fixing portion;

[0036] The burner unit comprises an ejector pipe portion and a burner head portion fixedly connected to the ejector pipe portion, the inside of the ejector pipe portion and the inside of the burner head portion jointly form the gas passage, the burner head portion is provided with the inner ring flame hole or the outer ring flame hole, the ejector pipe portion is connected to one of the connecting legs through the connecting portion, and the burner head portion is connected to the remaining connecting legs through the connecting portion.

[0037] In some embodiments, the ejector pipe portion comprises an ejector pipe and a mounting edge, the ejector pipe surrounds an ejector passage communicating with the inner ring flame hole or the outer ring flame hole, and the mounting edge is connected to the outer edge of the ejector pipe;

[0038] The connecting portion comprises a first connecting portion arranged on the connecting leg corresponding to the ejector pipe portion, and the mounting edge is fixedly connected to the first connecting portion.

[0039] In some embodiments, the first connecting portion is a first connecting hole arranged on the connecting leg, the mounting edge is provided with a second connecting hole, and the mounting edge and the connecting leg are fixedly connected through a fastener in cooperation with the first connecting hole and the second connecting hole.

[0040] In some embodiments, the burner head portion comprises a combustion ring and a skirt, the combustion ring is provided with a combustion passage communicating with the inner ring flame hole or the outer ring flame hole, and the skirt is annularly arranged at the outer edge of the combustion ring;

[0041] The connecting portion comprises a second connecting portion arranged on the connecting leg corresponding to the burner head portion, and the skirt is connected to the second connecting portion.

[0042] In some embodiments, the second connecting portion is a clamping groove formed on the connecting leg, and the skirt is clamped in the clamping groove to fixedly connect the skirt and the connecting leg.

[0043] In some embodiments, each of the burners includes an upper shell and a lower shell, the upper shell is connected to the lower shell in a covering manner, and part of the structure of the upper shell and part of the structure of the lower shell jointly enclose the injection pipe portion, and the remaining part of the structure of the upper shell and the remaining part of the structure of the lower shell jointly enclose the burner head portion.

[0044] In some embodiments, the upper shell and the lower shell are made of stainless steel.

[0045] In some embodiments, the burner including the inner annular flame hole further includes a first partition plate, a gap is formed between the part of the upper shell forming the inner annular flame hole and the part of the lower shell forming the inner annular flame hole, the first partition plate is arranged in the gap and divides the inner annular flame hole into two sub-inner annular flame holes arranged in the height direction of the burner.

[0046] In some embodiments, the burner including the outer annular flame hole further includes a second partition plate, a gap is formed between the part of the upper shell forming the outer annular flame hole and the part of the lower shell forming the outer annular flame hole, the second partition plate is arranged in the gap and divides the outer annular flame hole into two sub-outer annular flame holes arranged in the height direction of the burner.

[0047] In a second aspect, the embodiments of the present application provide a combustion stove, which includes the burner as described above.

[0048] Based on the burner according to the embodiments of the present application, the flow guide ring is arranged, and the inner annular air supplementing port and the outer annular air supplementing port are defined by the flow guide ring and the inner wall of the air supplementing channel formed by the burner body, and flow toward the inner annular flame hole and the outer annular flame hole, respectively. Thus, when the secondary air enters the air supplementing channel from the air inlet, the secondary air is divided into two sub-air flows under the guidance of the flow guide ring, one of which flows to the inner annular air supplementing port and finally flows to the inner annular flame hole, and the other of which flows to the outer annular air supplementing port and finally flows to the outer annular flame hole. In this way, the air stealing between the flames generated by the inner annular flame hole and the outer annular flame hole can be reduced, and the combustion efficiency of the combustion stove and the burner can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in these drawings without any creative effort for those skilled in the art.

[0050] Figure 1 Structure diagram of an embodiment of the burner of the present application;

[0051] Figure 2 Structure diagram of the burner of the present application; Figure 1 Structure diagram of the burner of the present application;

[0052] Figure 3 Structure diagram of the burner of the present application; Figure 2 Structure diagram of the burner of the present application;

[0053] Figure 4 Structure diagram of the burner of the present application; Figure 2 Structure diagram of the burner of the present application;

[0054] Figure 5 Structure diagram of the burner of the present application; Figure 1 Structure diagram of the burner of the present application;

[0055] Figure 6 Structure diagram of the burner of the present application; Figure 1 Structure diagram of the burner of the present application

[0056] Figure 7 Structure diagram of the burner of the present application; Figure 6 Structure diagram of the burner of the present application;

[0057] Explanation of the reference signs:

[0058] 100, burner; 10, mounting support; 11, seat body; 111, lap edge; 1111, second guide surface; 13, connecting leg; 131, connecting portion; 1311, first connecting portion; 1311a, first connecting hole; 1313, second connecting portion; 1313a, clamping groove; 1314, first fixing portion; 1315, third fixing portion; 15, connecting rib; 151, second fixing portion; 153, positioning protrusion; 30, burner unit; 30a, inner ring fire hole; 30b, sub-inner ring fire hole; 30c, air supplement channel; 30d, air inlet; 30f, outer ring fire hole; 30g, sub-outer ring fire hole; 30h, gas channel; 30i, inner ring air supplement inlet; 30j, outer ring air supplement inlet; 30k, gas outlet; 31, upper shell; 32, first partition plate; 33, lower shell; 34, second partition plate; 35, injection pipe portion; 351, injection pipe; 353, mounting edge; 3531, second connecting hole; 37, burner head portion; 371, combustion ring; 373, skirt; 50, flow guide ring; 51, flow guide body; 511, guide surface; 513, avoiding opening; 515, outer edge; 517, inner edge; 53, first connecting leg; 60, oil cup; 60a, accommodating cavity; 61, cup body; 63, handle portion; 65, supporting outer edge; 651, first guide surface; 70, thermocouple; 71, igniter; 73, fixing support; 731, support body; 733, clamping spring; 90, gland; 91, cover body; 911, limiting stop edge; 93, second connecting leg.

[0059] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application with reference to the accompanying drawings.

[0061] The following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0062] In the description of the present application, it is understood that the terms "first", "second" and the like are used only for the purpose of description, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood in specific cases. In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of the associated objects is described, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more associated listed items.

[0064] With the continuous improvement of cooking technology, the requirements for the burner are also getting higher and higher. It is also necessary to improve the combustion efficiency of the burner.

[0065] The burner generally has an inner fire hole and an outer fire hole to form the effect of inner ring combustion and outer ring combustion on the cooker. However, the flame at the inner fire hole and the flame at the outer fire hole in the prior art will compete for secondary air when the secondary air is supplemented, resulting in poor combustion efficiency of the burner.

[0066] To solve the above problems, please refer to Figure 1 One aspect of the present application provides a combustion stove. In the embodiments of the present application, the combustion stove 300 includes a stove shell, a burner 100 and a liquid receiving tray. The stove shell defines a receiving cavity therein. The burner 100 is installed in the receiving cavity and is used to heat the cooker.

[0067] The stove shell includes a panel, which is provided with an opening communicating with the receiving cavity. The liquid receiving tray is installed at the opening and is used to receive the soup spilled by the cooker, facilitate cleaning, and prevent the soup from flowing into the interior of the stove shell.

[0068] In order to improve the combustion efficiency of the burner 100, please refer to Figures 2 to 4In another aspect, the application provides a burner 100, which can include a burner body, a guide ring 50, a mounting bracket 10, an oil cup 60, a thermocouple 70, an igniter 71, a fixing bracket 73, and a gland 90. The mounting bracket 10 is mounted on a cooktop, and the at least two burner bodies 30, the guide ring 50, the oil cup 60, the fixing bracket 73, and the gland 90 are fixed to the mounting bracket 10. The thermocouple 70 and the igniter 71 are mounted on the fixing bracket 73.

[0069] The burner body is internally formed with a gas passage 30h, and is provided with an inner ring fire hole 30a and an outer ring fire hole 30f which respectively communicate with the gas passage 30h. The outer ring fire hole 30f is annularly arranged outside the inner ring fire hole 30a. The burner body is further formed with a gas supplement channel 30c which is independent of the gas passage 30h. The gas supplement channel 30c includes an air inlet 30d on the outer side wall of the burner body and an air outlet 30k between the inner ring fire hole 30a and the outer ring fire hole 30f. Specifically, the burner body can be in an integrated structure, for example, the burner body can be integrally casted. Of course, the burner body can also be in a split structure, i.e., the burner body includes two burner bodies 30 which are arranged in a split manner.

[0070] It can be understood that, in the case where the burner body is in a two-part structure of two burner bodies 30, the two burner bodies 30 can be manufactured by separate processing, for example, forging, so as to reduce the production cost of the burner 100. When a single burner body 30 of the two burner bodies 30 needs to be maintained, only the single burner body 30 needs to be disassembled and maintained, which is convenient for the maintenance of the staff. The following content is still based on the case where the burner body is in a two-part structure of two burner bodies 30, and the burner 100 of the application has a better combustion efficiency.

[0071] Two burner units 30, one of which is formed with an inner ring fire hole 30a, and the other of which is formed with an outer ring fire hole 30f. It can be understood that the burner unit 30 formed with the inner ring fire hole 30a is an inner ring burner, and the burner unit 30 formed with the outer ring fire hole 30f is an outer ring burner. The inside of each burner unit 30 is formed into a gas channel 30h, and the gap between the two burner units 30 is formed into a gas supplement channel 30c. The upper shell 31 and the lower shell 33 can be made of stainless steel, copper alloy or aluminum alloy. When made of stainless steel, the stainless steel has the advantages of low cost, long service life and high melting point, and the upper shell 31 and the lower shell 33 can be formed by forging or stamping once, improving the processing efficiency. The cover connection mode of the upper shell 31 and the lower shell 33 can be that the upper shell 31 and the lower shell 33 are covered and then welded to realize the final fixation of the two, which has the effect of firm connection. The burner unit 30 includes an ejector pipe part 35 and a burner head part 37 fixedly connected with the ejector pipe part 35, and the burner head part 37 is provided with the inner ring fire hole 30a or the outer ring fire hole 30f.

[0072] Please refer to Figures 2 to 4 Part of the structure of the upper shell 31 and part of the structure of the lower shell 33 together enclose the ejector pipe part 35, and the remaining part of the structure of the upper shell 31 and the remaining part of the structure of the lower shell 33 together enclose the burner head part 37. Please continue to refer to Figures 5 to 7 The burner unit 30 formed with the inner ring fire hole 30a (inner ring burner) further includes a first partition plate 32, and the part of the burner head part 37 of the upper shell 31 formed with the inner ring fire hole 30a and the part of the burner head part 37 of the corresponding lower shell 33 formed with the inner ring fire hole 30a form a gap, and the first partition plate 32 is arranged in the gap and divides the inner ring fire hole 30a into two sub-inner ring fire holes 30b arranged opposite in the height direction of the burner 100. In this way, by dividing the inner ring fire hole 30a into two sub-inner ring fire holes 30b, the area of the inner ring fire hole 30a can be reduced, so that the sub-inner ring fire hole 30b has greater resistance to flame combustion, reducing the probability of phenomena such as flame backfire and flameout. And the opposite arrangement of the sub-inner ring fire hole 30b, compared with the staggered arrangement between the two sub-inner ring fire holes 30b, the opposite arrangement can ensure that each burner unit 30 can be provided with a sufficient number of sub-inner ring fire holes 30b to ensure the heat load of the burner unit 30.

[0073] The burner element 30 (outer ring burner) with the outer ring flame hole 30f further comprises a second partition plate 34, a gap is formed between the part of the burner head 37 in the upper shell 31 forming the outer ring flame hole 30f and the part of the burner head 37 of the lower shell 33 forming the outer ring flame hole 30f, the second partition plate 34 is arranged in the gap and separates the outer ring flame hole 30f into two sub-outer ring flame holes 30g arranged opposite in the height direction of the burner 100. In this way, when the outer ring flame hole 30f is separated into two sub-outer ring flame holes 30g, the area of the outer ring flame hole 30f can be reduced, so that the combustion resistance of the sub-outer ring flame hole 30g to the flame is increased, and the probability of phenomena such as flame backfire and flameout is reduced. And the opposite arrangement of the sub-outer ring flame hole 30g, compared with the staggered arrangement between the two sub-outer ring flame holes 30g, the opposite arrangement can ensure that each burner element 30 can open a sufficient number of sub-outer ring flame holes 30g to ensure the heat load of the burner element 30.

[0074] When the number of burner elements 30 is two, the cooperation of the inner ring burner and the outer ring burner can improve the wrapping of the bottom of the cooker, improve the convective heat transfer coefficient between the bottom of the cooker and the flame of the burner element 30, and realize the improvement of the combustion efficiency of the burner 100.

[0075] The mounting bracket 10 can be made of copper, aluminum or alloy, and the alloy material can be stainless steel material, which is processed by forging for easy processing. The mounting bracket 10 can include a seat body 11, at least two connecting legs 13 and connecting ribs 15. The seat body 11 is connected to the stove body, for example, the seat body 11 can be provided with a first fixing hole, and the bottom of the stove body is provided with a second fixing hole, and the seat body 11 and the stove body are fixedly connected by a connecting piece and the cooperation of the first fixing hole and the second fixing hole. The number of first fixing holes can be at least two, and the at least two first fixing holes are arranged at intervals along the circumference of the seat body 11, and the number of second fixing holes in the bottom of the stove body can also be at least two, and one first fixing hole corresponds to one second fixing hole, so as to further improve the connection firmness of the seat body 11 and the bottom of the stove body.

[0076] At least two connecting legs 13 are connected to the seat body 11, and the at least two connecting legs 13 can be arranged at intervals along the circumference of the seat body 11. The number of the connecting legs 13 can be two, three, four or the like, and is not limited. The connecting ribs 15 are connected to the seat body 11 and / or the connecting legs 13. For example, the connecting ribs 15 can be connected to the seat body 11, or the connecting ribs 15 can be connected to one connecting leg 13, or the connecting ribs 15 can be connected between two adjacent connecting legs 13, so that the two connecting legs 13 are connected through the connecting ribs 15, and the connecting ribs 15 serve as reinforcing ribs between the two connecting legs 13, so as to improve the strength of the connecting legs 13 and avoid deformation of the connecting legs 13.

[0077] The mounting bracket 10 has at least two connecting portions 131, that is, the connecting legs 13 of the mounting bracket 10 are provided with the connecting portions 131, and one burner unit 30 is connected to one connecting portion 131, so as to connect the burner unit 30 and the connecting leg 13 of the mounting bracket 10. The connecting leg 13 can be further provided with a first fixing portion 1314 and a third fixing portion 1315, the flow guide ring 50 is connected to the first fixing portion 1314, and the gland 90 is connected to the third fixing portion 1315 and the connecting portion 131. The connecting rib 15 has a second fixing portion 151, and the fixing bracket 73 is connected to the second fixing portion 151. In this way, the mounting bracket 10 can load and mount each component of the burner 100, the number of structures is small, and the supporting and fixing effect is good. In the exemplary structure shown in the figure, when the number of the connecting legs 13 is three, one connecting leg 13 is provided with the connecting portion 131, the first fixing portion 1314 and the third fixing portion 1315, and the remaining two connecting legs 13 are provided with the connecting portion 131 and the first fixing portion 1314.

[0078] The connecting leg 13 extends in the height direction of the burner 100, and the two burner units 30 are arranged at intervals in the extension direction of the connecting leg 13. In this way, the two burner units 30 can have a height difference in the height direction of the burner 100. In actual use, when the areas of the inner ring fire holes 30a and the outer ring fire holes 30f are equal, if the number of the outer ring fire holes 30f of the outer ring burner is more than that of the inner ring fire holes 30a of the inner ring burner, the total area of the outer ring fire holes 30f of the outer ring burner will be larger, that is, the outer ring burner has higher thermal efficiency on the cooker. When the outer ring burner is located above the inner ring burner in the height direction of the burner 100, the distance between the outer ring burner and the cooker is closer than that between the inner ring burner and the cooker. In this way, by setting the position of the outer ring burner closer to the cooker, the thermal efficiency of the outer ring burner on the cooker can be better utilized to heat the cooker, improving the overall thermal efficiency of the burner 100. In addition, when the two burner units 30 have a height difference, the case of mutual competition for secondary air from the environment between the two burner units 30 is reduced, for example, when the outer ring burner is located above the inner ring burner, the outer ring burner and the inner ring burner avoid mutual competition for secondary air from the environment. In this way, the supply efficiency of secondary air to the flames at the inner ring fire holes 30a of the inner ring burner and the outer ring fire holes 30f of the outer ring burner can be effectively improved, so that the flames can burn fully, the carbon monoxide generated by the burner 100 can be better converted into carbon dioxide, the emission of combustion stove flue gas is reduced, the physical safety of the user is ensured, and the user's use experience is better improved.

[0079] The gap between the two burner units 30 forms a gas supplement channel 30c, which is independent of the gas channel 30h. The gas supplement channel 30c can be used to supplement the secondary air required for the flame burning at the inner ring fire holes 30a and the outer ring fire holes 30f. When the two burner units 30 have a height difference in the height direction of the burner 100, the gas supplement channel 30c is formed by the gap between the two burner units 30 in the height direction of the burner 100. The gas supplement channel 30c includes an air inlet 30d between the two burner units 30 and an air outlet 30k between the outer ring fire holes 30f and the inner ring fire holes 30a. A flow guide ring 50 is arranged at the air outlet 30k and cooperates with the inner wall of the gas supplement channel 30c to define an inner ring gas supplement port 30i and an outer ring gas supplement port 30j respectively facing the inner ring fire holes 30a and the outer ring fire holes 30f. In this way, the secondary air can enter the gas supplement channel 30c through the air inlet 30d and flow out through the inner ring gas supplement port 30i and the outer ring gas supplement port 30j respectively to flow through the corresponding inner ring fire holes 30a and outer ring fire holes 30f respectively.

[0080] The flow guide ring 50 can be a ring-shaped body made of stainless steel, cold plate, aluminum alloy or the like, and includes a flow guide body 51 and a first connecting leg 53 connected to the outer edge of the flow guide body 51. The first connecting leg 53 is connected to the first fixing portion 1314, and the flow guide body 51 is arranged at the air outlet 30k. In this way, each burner unit 30 can be supplemented with its own secondary air without stealing air from another burner unit 30, further improving the efficiency of secondary air supply and further reducing flue gas emissions. When the first connecting leg 53 is connected to the first fixing portion 1314, the first connecting leg 53 and the surface of the connecting portion 131 press and hold the burner unit 30 with the inner ring fire hole 30a, further improving the connection stability of the burner unit 30 and the connecting leg 13. In addition, during actual use, users can easily observe the internal structure of the stove body from the position of the air supplement channel 30c. When the flow guide body 51 of the flow guide ring 50 is located at the air outlet 30k, the flow guide body 51 can block the air supplement channel 30c to some extent, preventing users from observing the internal structure of the stove body of the combustion stove from the air supplement channel 30c, and improving the overall aesthetics of the combustion stove. At the same time, the structure of the first connecting leg 53 of the flow guide body 51 can be an integral structure, for example, the two are processed and formed by one-piece stamping. Of course, the flow guide body 51 and the first connecting leg 53 can also be in a split structure, for example, they are fixedly connected by bonding, clamping or threaded connection. In this way, either of the two can be easily disassembled, repaired or replaced.

[0081] The flow guide body 51 of the flow guide ring 50 can be configured as a ring structure, so that an inner ring air supplement port 30i and an outer ring air supplement port 30j can be respectively configured in the ring direction to avoid mutual secondary air stealing between adjacent two burner units 30, further improving the efficiency of secondary air supply and further reducing flue gas emissions.

[0082] Further, the flow guide body 51 is formed with a clamping hook, and the upper shell 31 or the lower shell 33 of the burner unit 30 is formed with a clamping groove 1313a, which can be clamped in the clamping groove 1313a to achieve clamping and fixing of the flow guide body 51 and the upper shell 31 or the lower shell 33. Of course, the upper shell 31 or the lower shell 33 of the burner unit 30 can also be formed with a clamping hook, and the flow guide body 51 can be formed with a clamping groove 1313a, which can also be clamped in the clamping groove 1313a to achieve clamping and fixing of the flow guide body 51 and the upper shell 31 or the lower shell 33. The number of clamping hooks can be multiple, and the multiple clamping hooks are arranged at intervals along the ring direction of the flow guide body 51, and the number of clamping hooks corresponds to the number of clamping grooves 1313a, so that the multiple clamping hooks and the multiple clamping grooves 1313a cooperate to further improve the stability of the clamping and fixing of the flow guide body 51 and the upper shell 31 or the lower shell 33.

[0083] In the scheme exemplarily shown in the figure, the present application provides the first connecting leg 53 with at least two, and the at least two first connecting legs 53 are arranged around the flow guide body 51. In this way, the connection stability of the flow guide ring 50 on the connecting leg 13 can be further improved by the at least two first connecting legs 53, and the pressing effect on the burner monomer 30 of the inner ring fire hole 30a can be improved. The number of the first connecting leg 53 can be two, three, four or five, etc., which is not limited.

[0084] The oil cup 60 can be made of stainless steel or sheet material, wherein the oil cup 60 is fixed to the seat body 11 and is located on the inner side of the inner ring fire hole 30a, and the oil cup 60 forms a receiving cavity 60a inside. The receiving cavity 60a can collect the dirt generated during cooking, such as oil stains, liquids and sundries generated by the cooker during cooking, to prevent the dirt from entering the stove. The way the oil cup 60 is fixed to the seat body 11 can be to directly place the oil cup 60 inside the seat body 11. When the receiving cavity 60a of the oil cup 60 needs to be cleaned, the user can directly take out the oil cup 60 from the seat body 11, which is convenient to operate and improves the user's experience.

[0085] The thermocouple 70 is composed of two different alloy materials. Different alloy materials will produce different thermoelectric potentials under the action of temperature, and the two ends of the two different components of the conductor are connected to form a loop. When the temperature of the junction point is different, an electromotive force will be generated in the loop. In the abnormal flameout state, the thermoelectric potential of the thermocouple 70 disappears, and the solenoid valve on the gas pipeline will close the gas. During normal use, the continuous thermoelectric potential of the thermocouple 70 ensures that the solenoid valve of the gas pipeline is always open and ventilated. In this way, the detection of the thermocouple 70 can ensure the safety of the user during the use of the burner 100 and improve the safety of using fire.

[0086] The igniter 71 is used to provide enough energy at a moment to ignite the mixed air at the inner ring fire hole 30a and the outer ring fire hole 30f to form a flame. When the flow guide body 51 of the flow guide ring 50 interferes with the positions of the thermocouple 70 and the igniter 71, the flow guide body 51 can be provided with a relief opening 513 for the thermocouple 70 and the igniter 71 to pass through, so that the thermocouple 70 and the igniter 71 can extend into the vicinity of the inner ring fire hole 30a of the burner monomer 30 to realize the detection function of the thermocouple 70 and the ignition function of the igniter 71.

[0087] The cover 90 can be made of stainless steel or plate material, and is arranged above the at least two burner units 30 and used to be clamped and fixed with the mounting bracket 10 to hold the at least two burner units 30. In one structure, the cover 90 comprises a cover body 91 and at least two second connecting legs 93 connected to the outer edge of the cover body 91, one second connecting leg 93 is connected to the third fixing part 1315, and the other second connecting leg 93 is connected to the connecting part 131 to clamp and fix the burner unit 30 with the mounting bracket 10. In this way, the stability of the arrangement of the burner unit 30 and the connecting leg 13 can be improved, and the burner unit 30 and the connecting leg 13 can be prevented from being separated to cause danger to the user. The cover body 91 can be configured in a ring structure to stop the burner unit 30 with the outer ring flame hole 30f in the ring direction after the final installation, and improve the fixing effect of the cover 90 on the burner unit 30. At the same time, the cover body 91 and the second connecting leg 93 can be an integral structure, for example, the two are processed and formed by one-piece stamping, of course, the cover body 91 and the second connecting leg 93 can also be a split structure, for example, the two are fixed and connected by bonding, clamping or screwing, so that either of the two can be easily disassembled, repaired or replaced.

[0088] In the scheme exemplarily shown in the figure, the second connecting leg 93 is provided with at least two, and the at least two second connecting legs 93 are arranged around the cover body 91. In this way, the connection stability of the cover body 91 on the connecting leg 13 can be further improved by the at least two second connecting legs 93. The number of the second connecting leg 93 can be two, three, four or five, etc., which is not limited. For example, please refer to Figure 4 At this time, the number of the second connecting leg 93 is three, and the three second connecting legs 93 are arranged around the cover body 91 to ensure the stability of the mounting bracket 10 connection while ensuring the number of the second connecting leg 93 is small.

[0089] Thus, by connecting the burner body 30 to the connecting portion 131 of the mounting bracket 10, the wrapping of the bottom of the cooker by the two burner bodies 30 is improved, the convection heat exchange coefficient between the bottom of the cooker and the flame of the burner body 30 is improved, and the combustion efficiency of the burner 100 is improved. In addition, the single burner body 30 can be manufactured by separate processing, such as forging, without the need for high-cost integrated casting, thereby reducing the production cost of the burner 100. When the single burner body 30 needs to be maintained, only the single burner body 30 needs to be disassembled and maintained, which is convenient for the maintenance of the staff. At the same time, the grommet 90 cooperates with the mounting bracket 10 to clamp and fix the burner body 30, thereby further improving the stability of the burner body 30 mounted on the mounting bracket 10 and reducing the risk of the burner body 30 falling off the mounting bracket 10.

[0090] The burner body 30 is modular in structure, that is, the burner body 30 has the functions of injection, burner head, and flame splitter cover. When disassembly is needed for maintenance or repair, the burner body 30 can be directly disassembled at the connecting portion 131 of the mounting bracket 10, which is convenient to operate.

[0091] In addition, the two burner bodies 30, the flow guide ring 50, the oil cup 60, the thermocouple 70, the igniter 71, and the grommet 90 of the burner 100 can be assembled by a single mounting bracket 10, which can reduce the number of mounting structure parts of the burner 100, simplify the structure of the burner 100, reduce the production cost, and facilitate the overall assembly of the burner 100 by the staff or the user.

[0092] In the exemplary actual use process, when the user performs the ignition operation, the gas in the gas pipeline enters the burner head 37 through the injection pipe 35 of one burner body 30 (for example, an inner ring burner), mixes with air, and then flows out through the inner ring fire hole 30a of the burner head 37. At this time, the igniter 71 ignites the mixed air flowing out of the inner ring fire hole 30a of the burner head 37 of the inner ring burner to generate an inner ring flame. When the gas in the gas pipeline increases, the gas also enters the burner head 37 through the injection pipe 35 of another burner body 30 (for example, an outer ring burner), mixes with air, and then flows out through the outer ring fire hole 30f of the burner head 37. At this time, the igniter 71 ignites the mixed air flowing out of the outer ring fire hole 30f of the burner head 37 of the outer ring burner to generate an outer ring flame. In this way, the inner ring flame and the outer ring flame wrap the bottom of the cooker, and the bottom of the cooker is heated.

[0093] The technical scheme of the present application is provided with the flow guide ring 50, and at the air outlet 30k of the air supplement channel 30c formed by the burner body, the inner wall of the air supplement channel 30c cooperates with the flow guide ring 50 to define the inner ring air supplement port 30i and the outer ring air supplement port 30j flowing towards the inner ring flame hole 30a and the outer ring flame hole 30f respectively. When the secondary air enters from the air inlet 30d of the air supplement channel 30c, under the guiding effect of the flow guide ring 50, the secondary air is divided into two sub-air flows, one of which flows to the inner ring air supplement port 30i and finally to the inner ring flame hole 30a, and the other of which flows to the outer ring air supplement port 30j and finally to the outer ring flame hole 30f. In this way, the air stealing between the flames generated by the inner ring flame hole 30a and the outer ring flame hole 30f can be reduced, and the combustion efficiency of the combustion stove and the burner 100 can be improved.

[0094] In order to improve the guiding effect of the flow guide body 51 on the secondary air, in an embodiment, please refer to Figures 2 to 3 , the flow guide body 51 of the flow guide ring 50 has an outer edge 515 and an inner edge 517, and the outer edge 515 cooperates with the inner wall of the air supplement channel 30c to define the outer ring air supplement port 30j, and the inner edge 517 cooperates with the inner wall of the air supplement channel 30c to define the inner ring air supplement port 30i. The flow guide body 51 is inclined downward in the direction from the outer edge 515 to the inner edge 517. In this way, under the inclination of the flow guide body 51, the secondary air flow entering the inner ring air supplement port 30i can more smoothly enter the inner ring flame hole 30a under the guidance of the flow guide body 51. Of course, in another structure, the flow guide body 51 can be inclined upward in the direction from the outer edge 515 to the inner edge 517, so that the secondary air flow entering the outer ring air supplement port 30j can more smoothly enter the outer ring flame hole 30f located on the outer side under the guidance of the flow guide body 51.

[0095] On the basis of the flow guide body 51 being inclined downward in the direction from the outer edge 515 to the inner edge 517, that is, the inner side surface of the flow guide body 51 forms a guide surface 511, in order to further avoid oil stains from entering the remaining structure of the combustion stove, the guide surface 511 is used to guide the dirt into the seat body 11 or the oil cup 60 in the seat body 11. In this way, when the dirt falls or drips from the cookware, the dirt can be guided into the seat body 11 or the oil cup 60 in the seat body 11 under the guidance of the guide surface 511 of the flow guide body 51. In actual use, the user can lay paper towels or bags at the seat body 11 to collect the dirt, and can directly replace the paper towels or bags containing the dirt when cleaning is needed, which is convenient to operate. In this way, the flow guide body 51 can not only guide the air flow, but also guide the dirt to the seat body 11 or the oil cup 60, improving the user experience.

[0096] Furthermore, in the height direction of the burner 100, the flow guiding body 51 is located above the inner ring flame hole 30a, and the projection of the inner ring flame hole 30a onto the horizontal plane is within the area of ​​the projection of the flow guiding body 51 onto the same horizontal plane. Thus, with the flow guiding body 51 in place, when contaminants flow down in the height direction of the burner 100, the flow guiding body 51 can block the contaminants, preventing them from flowing into the inner ring flame hole 30a.

[0097] In one embodiment, in the height direction of the burner 100, the distance between the upper surface of the portion of the burner unit 30 forming the inner ring flame hole 30a and the inner edge 517 is greater than 0 mm and less than or equal to 8 mm. This distance is also known as... Figure 7 As shown in H1. When the spacing is greater than 0 mm and less than or equal to 8 mm, the burner unit 30 with the inner ring flame holes 30a can achieve complete combustion with sufficient secondary air supply, and the overall size of the burner 100 can be avoided from being too large. When the spacing is less than or equal to 0 mm, the size of the inner ring air supply port 30i will be too small, resulting in a reduction in the flow rate of secondary air entering through the inner ring air supply port 30i. This leads to insufficient oxygen for the flame at the inner ring flame holes 30a, and methane cannot be completely converted into carbon dioxide, with some being converted into carbon monoxide, resulting in excessive carbon monoxide. When the spacing is greater than 8 mm, the overall size of the burner 100 will be too large. And when the position of the guide body 51 of the guide ring 50 within the burner 100 remains unchanged, at this spacing, the burner unit 30 with the inner ring flame holes 30a will be further away from the bottom of the cookware, thus affecting the heating effect of the burner unit 30 with the inner ring flame holes 30a on the cookware. Exemplary, the distance between the upper surface of the portion of the burner unit 30 that forms the inner ring flame hole 30a and the inner edge 517 can be 1 mm, 2 mm, 4 mm, 5 mm or 8 mm, etc., and this application does not limit it.

[0098] In the height direction of the burner 100, the distance between the lower surface of the portion of the burner unit 30 that forms the outer ring flame hole 30f and the outer edge 515 is greater than 0 mm and less than or equal to 15 mm. This distance is also known as... Figure 7H2. When the distance is greater than 0 mm and less than or equal to 15 mm, the burner element 30 with the outer ring of fire holes 30f can be fully combusted with sufficient secondary air supply, and the overall size of the burner 100 can be avoided to be too large. When the distance is less than or equal to 0 mm, the size of the outer ring air supply port 30j is too small, which reduces the flow of secondary air entering from the outer ring air supply port 30j, and the amount of oxygen required for the flame burning at the outer ring of fire holes 30f is insufficient, so that the methane cannot be fully converted into carbon dioxide and part of it is converted into carbon monoxide, resulting in excessive carbon monoxide. When the distance is greater than 15 mm, the overall size of the burner 100 is too large, and when the position of the flow guide main body 51 of the flow guide ring 50 in the burner 100 is unchanged, the burner element 30 with the outer ring of fire holes 30f is farther away from the bottom of the cooker, which affects the heating effect of the burner element 30 with the outer ring of fire holes 30f on the cooker. Exemplarily, the distance between the upper surface of the part of the burner element 30 constituting the outer ring of fire holes 30f and the inner edge 517 can be 1 mm, 3 mm, 5 mm, 7 mm, 9 mm, 12 mm, or 15 mm, etc., which is not limited in the present application.

[0099] In the radial direction of the burner element 30, the distance between the end face of the inner ring of fire holes 30a and the inner edge 517 is greater than or equal to 0 mm and less than or equal to 5 mm, which is also referred to as L1. Figure 7 L1. When the distance is greater than or equal to 0 mm and less than or equal to 5 mm, the flame burning at the inner ring of fire holes 30a can be sufficient. It can be understood that the burner element 30 also forms an inner ring of fire holes 30a inside the inner ring of fire holes 30a, and the distance referred to here can be that the end face of the inner ring of fire holes 30a is closer to the center of the inner ring of fire holes 30a to form the distance, or the inner edge 517 is closer to the center of the inner ring of fire holes 30a to form the distance. When the distance is greater than 5 mm, the root of the flame burning at the inner ring of fire holes 30a can touch the low-temperature flow guide main body 51 of the flow guide ring 50, which can cause the flame to burn insufficiently, resulting in that the carbon monoxide in the combustion flue gas cannot be better converted into carbon dioxide, thereby causing the carbon monoxide to exceed the standard, which can cause bad effects on the health of the user; or the flow guide main body 51 of the flow guide ring 50 cannot better shield the dirt when the dirt falls, so that the dirt falls on the burner element 30 with the inner ring of fire holes 30a. Exemplarily, the distance between the end face of the inner ring of fire holes 30a and the inner edge 517 can be 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm, etc., which is not limited in the present application.

[0100] For example, the diameter of the inner ring outlet of the burner unit 30 can be 80 mm, and the diameter of the opening formed by the inner edge 517 of the guide body 51 of the guide ring 50 can be 80 mm. In this case, the distance between the end face of the inner ring fire hole 30a and the inner edge 517 can be 0 mm.

[0101] In the radial direction of the burner unit 30, the distance between the end face of the outer ring flame hole 30f and the outer edge 515 is greater than or equal to 10 mm and less than or equal to 30 mm. This distance is also known as... Figure 7 As shown in L2, when the spacing is greater than or equal to 10 mm and less than or equal to 30 mm, the flame at the outer ring burner hole 30f can burn completely. When the spacing is less than 10 mm, the opening area of ​​the outer ring air inlet 30j will be too small, resulting in a reduction in the flow rate of secondary air entering through the outer ring air inlet 30j. This leads to insufficient oxygen for the flame burning at the outer ring burner hole 30f, preventing methane from being completely converted into carbon dioxide and causing some to be converted into carbon monoxide, resulting in excessive carbon monoxide levels. When the distance is greater than 30 mm, and the positions and dimensions of the two burner units 30 with the outer ring flame holes 30f remain unchanged, this distance will cause the size of the guide body 51 of the guide ring 50 to decrease. Consequently, the guide body 51 of the guide ring 50 will have a poorer shielding effect on the gap between the two burner units 30 in the height direction of the burner 100, meaning a poorer shielding effect on the gas supply channel 30c. This makes it easier for users to observe the internal structure of the stove body through the gas supply channel 30c, affecting the overall aesthetics of the stove. Exemplarily, the distance between the end face of the outer ring flame hole 30f and the outer edge 515 can be 10 mm, 15 mm, 20 mm, 25 mm, or 30 mm, etc., and this application does not limit this.

[0102] For example, the burner unit 30 also has an outer ring outlet located inside a plurality of outer ring fire holes 30f. The diameter of the outer ring outlet can be 120 mm, and the diameter of the opening formed by the outer edge 517 of the guide body 51 of the guide ring 50 can be 100 mm. In this case, the distance between the end face of the outer ring fire hole 30f and the outer edge 515 can be 20 mm.

[0103] In one structural form, the oil cup 60 includes a cup body 61 and a handle 63. The cup body 61 is fixed to the base 11, and the handle 63 is connected to the cup body 61 and extends in a direction away from the base 11. The outer peripheral surface of the handle 63 and the inner sidewall of the cup body 61 form a receiving cavity 60a. When it is necessary to take out or put in the oil cup 60, the user can grasp the handle 63 to take out or put in the cup body 61. Specifically, the cup body 61 and the handle 63 can be an integral structure, which can improve the connection strength between the two and reduce the assembly process.

[0104] The junction between the end surface of the end of the handle part 63 away from the seat body 11 and the outer peripheral surface of the handle part 63 is rounded, so that when the user needs to pick up the oil cup 60 and the hand touches the handle part 63, the hand of the user will not be scratched by the junction between the end surface and the outer peripheral surface, ensuring the safety of the user and further improving the user experience.

[0105] The outer edge of the cup main body 61 of the oil cup 60 is formed with a supporting outer rim 65, which is hung on the lap joint edge 111 of the seat body 11. The side of the supporting outer rim 65 close to the seat body 11 is formed with a first guide surface 651, and the lap joint edge 111 of the seat body 11 is formed with a second guide surface 1111 that guides the first guide surface 651. In the actual installation process, when the oil cup 60 is placed on the seat body 11, the first guide surface 651 of the supporting outer rim 65 guides the second guide surface 1111 of the seat body 11, so that the cup main body 61 of the oil cup 60 can be automatically centered on the seat body 11 during placement, so that under the guidance of the guide surface 511 formed on the inner side of the flow guide main body 51, the dirt can be more accurately guided into the receiving cavity 60a of the oil cup 60, which is convenient to operate and further improves the user experience. The supporting outer rim 65 can be configured as an annular structure, so that when the oil cup 60 is placed on the seat body 11, the supporting outer rim 65 can be annularly abutted with the lap joint edge 111 of the seat body 11, so that the stability of the oil cup 60 placed on the seat body 11 can be further improved.

[0106] In an embodiment, referring to Figure 4 The connecting rib 15 is further formed with a mounting boss, which is formed with an inclined surface, and the second fixing part 151 is arranged on the inclined surface of the mounting boss, so that when the fixing bracket 73 is connected to the second fixing part 151, the thermocouple 70 and the igniter 71 mounted on the fixing bracket 73 can be obliquely arranged upward and pass through the avoiding opening 513. In this way, under the arrangement of the inclined surface, during installation, the thermocouple 70 and the igniter 71 can be obliquely inserted between the flow guide main body 51 of the flow guide ring 50 and the inner ring burner, so that the staff can easily install the thermocouple 70 and the igniter 71 in the burner 100, further improving the installation efficiency of the staff.

[0107] The inclined surface of the mounting boss on the connecting rib 15 also has a positioning protrusion 153, and the fixing support 73 is provided with a positioning hole that is positioned in cooperation with the positioning protrusion 153. In this way, the fixing support 73 can be pre-fixed on the connecting rib 15 through the pre-positioning cooperation, and then the second fixing part 151 is connected with the fixing support 73 to realize the final fixed connection of the fixing support 73 and the connecting rib 15. In this way, the accuracy of the relative position of the fixing support 73 and the connecting rib 15 when they are connected can be ensured. Of course, the fixing support 73 can also have the positioning protrusion 153, and the inclined surface of the mounting boss on the connecting rib 15 is provided with a positioning hole that is positioned in cooperation with the positioning protrusion 153. In this way, the fixing support 73 can also be pre-fixed on the connecting rib 15 through the positioning cooperation of the positioning protrusion 153 and the positioning hole. The number of the positioning protrusions 153 can be one or more (for example, two, three, four, or five, etc.), and the number of the positioning holes corresponds to the number of the positioning protrusions 153. When the number of the positioning protrusions 153 is more, the accuracy of the positioning can be improved, and the positioning effect can be further improved. Therefore, no specific limitation is made.

[0108] In the scheme exemplarily shown in the figure, the fixing support 73 includes a support body 731 and two clamping elastic pieces 733. The support body 731 is connected to the second fixing part 151, and the two clamping elastic pieces 733 are connected to the support body 731. One clamping elastic piece 733 is used to clamp or release the thermocouple 70, and the other clamping elastic piece 733 is used to clamp or release the igniter 71. In the actual installation process, a clamping space is formed in the clamping elastic piece 733. When the thermocouple 70 and the igniter 71 are clamped or released, the clamping elastic piece 733 will be elastically deformed under the abutment of the thermocouple 70 and the igniter 71, so that the clamping space becomes larger or smaller. That is, in the clamping process, the clamping space will first become larger, so that the thermocouple 70 and the igniter 71 enter the clamping space. When the thermocouple 70 and the igniter 71 gradually enter the clamping space, the clamping space will become smaller, thereby achieving the clamping of the thermocouple 70 and the igniter 71. In the releasing process, the clamping space will first become larger, and when the thermocouple 70 and the igniter 71 gradually leave the clamping space, the clamping space will gradually become smaller. Of course, the thermocouple 70 and the igniter 71 can be connected to the fixing support 73 through the bonding mode, and no limitation is made thereto. The material of the clamping elastic piece 733 can be a metal material or a plastic material, etc. with a certain elastic deformation amount. When the clamping elastic piece 733 is a metal material, the metal material has the advantages of high melting point, burn resistance, and large self-strength to realize the clamping stability of the thermocouple 70 or the igniter 71, and no limitation is made thereto.

[0109] The above describes the advantage of high combustion efficiency of the burner 100 of the present application from the structure of the flow guide ring 50. On this basis, please refer to Figures 2 to 4In order to realize good fixing of the mounting bracket 10 and the burner element 30, the injector pipe part 35 is connected to one connecting leg 13 through the connecting part 131, and the burner head part 37 is connected to the remaining connecting leg 13 through the connecting part 131. In this way, the stability of the overall support of the burner element 30 can be improved by fixedly connecting the injector pipe part 35 and the burner head part 37 of the burner element 30. In the actual installation process, the connection between the connecting part 131 connected to the injector pipe part 35 and the injector pipe part 35 can be a fixed connection, such as threaded connection or pin connection, and the connection between the connecting part 131 connected to the burner head part 37 and the burner head part 37 can be a non-fixed connection, such as clamping or lapping (when the connection is in the form of clamping, the connecting part 131 connected to the burner head part 37 is a clamping groove 1313a, and part of the structure of the burner head part 37 is clamped in the clamping groove 1313a to realize clamping connection; when the connection is in the form of lapping, the connecting part 131 connected to the burner head part 37 is a step, and part of the structure of the burner head part 37 is lapped on the step to realize lapping connection), which can ensure the support and fixing of the connecting leg 13 of the mounting bracket 10 to the burner element 30 while reducing the cumbersome assembly steps and improving the assembly efficiency. Of course, the connection between the connecting part 131 connected to the injector pipe part 35 and the injector pipe part 35 and the connection between the connecting part 131 connected to the burner head part 37 and the burner head part 37 can be a fixed connection to further improve the support and fixing.

[0110] In one structure, the injector pipe part 35 includes an injector pipe 351 and a mounting edge 353, the injector pipe 351 surrounds an injector passage communicating with the inner ring fire hole 30a or the outer ring fire hole 30f, and the mounting edge 353 is connected to the outer edge of the injector pipe 351. The burner head part 37 includes a combustion ring 371 and a skirt edge 373, the combustion ring 371 is provided with a combustion passage communicating with the inner ring fire hole 30a or the outer ring fire hole 30f, and the skirt edge 373 is annularly arranged at the outer edge of the combustion ring 371. It can be understood that the injector passage and the gas passage are in butt joint communication and jointly define the above-mentioned gas channel 30h. In the injector passage, primary air is sucked from the inlet of the injector passage and mixed with the gas in the injector passage, then the expansion section in the injector passage increases the pressure of the mixed gas, so that the gas and air of the mixed gas are further mixed, and then the mixed gas flows to the combustion passage, the mixed gas is distributed in a ring shape by the ring-shaped combustion passage, and then flows out of the inner ring fire hole 30a or the outer ring fire hole 30f to be ignited by the igniter 71, thereby achieving the effect of ring-shaped flame to heat the cooker in a ring direction and better wrap the cooker.

[0111] The connecting portion 131 comprises a first connecting portion 1311 arranged on the connecting leg 13 corresponding to the injection pipe portion 35 and a second connecting portion 1313 arranged on the connecting leg corresponding to the burner head portion 37. The mounting edge 353 is fixedly connected with the first connecting portion 1311, so that the injection pipe portion 35 can be fixedly connected with the first connecting portion 1311 of the connecting leg 13. The skirt edge 373 is fixedly connected with the second connecting portion 1313, so that the burner head portion 37 is fixedly connected with the second connecting portion 1313. In this way, the mounting edge 353 and the skirt edge 373 can be fixedly connected with the first connecting portion 1311 and the second connecting portion 1313, respectively, without affecting the original structure of the injection pipe 351 of the injection pipe portion 35 and the combustion ring 371 of the burner head portion 37.

[0112] Further, the first connecting portion 1311 is a first connecting hole 1311a arranged on the connecting leg 13, and the mounting edge 353 is provided with a second connecting hole 3531. The mounting edge 353 and the connecting leg 13 are fixedly connected through a fastener (not shown in the figure) matched with the first connecting hole 1311a and the second connecting hole 3531. For example, the fastener can be a threaded fastener, and the first connecting hole 1311a and the second connecting hole 3531 can both be threaded holes. The threaded fastener is sequentially inserted into the first connecting hole 1311a and the second connecting hole 3531, so as to achieve the threaded fixed connection between the mounting edge 353 and the connecting leg 13. Of course, the fastener can also be a fastening pin, which is inserted into the first connecting hole 1311a and the second connecting hole 3531, so as to achieve the fixed connection between the mounting edge 353 and the connecting leg 13. The type of the fastener is not limited here, and can be selected according to the actual connection strength requirement and cost.

[0113] The second connecting portion 1313 is a clamping groove 1313a formed on the connecting leg 13, and the skirt edge 373 is clamped in the clamping groove 1313a, so as to connect the skirt edge 373 and the connecting leg 13. In the actual installation process, the skirt edge 373 can be first clamped in the clamping groove 1313a, so as to pre-install the burner monomer 30 on the connecting leg 13 of the mounting bracket 10. Then, the fixed connection between the first connecting portion 1311 and the mounting edge 353 is achieved, so as to finally connect the burner monomer 30 and the connecting leg 13. The operation is convenient, and the assembly steps can be appropriately reduced. The connection stability is ensured, and the assembly efficiency is improved. Of course, the first connecting portion 1311 can also be the clamping groove 1313a, and the second connecting portion 1313 can be a connecting hole. Alternatively, the first connecting portion 1311 and the second connecting portion 1313 can both be connecting holes. The above-mentioned forms are not limited.

[0114] In an embodiment, the liquid cup is formed with an opening, and the cover body 91 of the gland 90 is formed with a limiting stop 911 protruding away from the burner unit 30. The limiting stop 911 is arranged to pass through the opening and stop the side wall of the opening. In this way, when the liquid cup is misaligned or installed, the limiting stop 911 can stop the side wall of the opening to prevent the liquid cup from being misaligned too much, thereby limiting the position of the liquid cup. In addition, during installation, the limiting stop 911 can be used as a reference for the installation position. By passing the limiting stop 911 through the opening, the installation position of the liquid cup can be determined, thereby facilitating installation.

[0115] In one structure, the limiting stop 911 is annular. In this way, the limiting stop 911 can limit the liquid cup in the circumferential direction, thereby limiting the position of the liquid cup in the circumferential direction. Of course, the limiting stop 911 can also be a structure including multiple sub-stops arranged along the circumference of the cover body 91 of the gland 90. The multiple sub-stops can also limit the liquid cup in the circumferential direction, thereby limiting the position of the liquid cup in the circumferential direction. In addition, the production material of the liquid cup can be reduced, thereby reducing the production cost of the liquid cup to some extent. However, this is not limited.

[0116] The joint between the limiting stop 911 and the cover body 91 of the gland 90 is smoothly transitioned. In this way, the sharpness of the joint can be reduced, so that the user or the staff will not be scratched when touching the joint, thereby improving the user experience and ensuring the safety in use.

[0117] In the exemplary actual assembly process, the assembly process can be as follows: first, the mounting bracket 10 is fixedly connected with the bottom of the stove body (for example, through a connecting piece and the cooperation connection of the first fixing hole of the mounting bracket 10 and the second fixing hole of the stove body). After the installation of the mounting bracket 10 and the bottom of the stove body is completed, the oil cup 60 can be placed on the seat body 11 of the mounting bracket 10, and then the inner ring burner of the two burner units 30 is installed on the connecting leg 13 of the mounting bracket 10 (for example, the inner ring burner is connected to the first connecting part 1311 and the second connecting part 1313 of the connecting part 131 of the mounting bracket 10, respectively), and then the igniter 71 and the thermocouple 70 are installed on the fixing bracket 73 (for example, the igniter 71 and the thermocouple 70 are installed on the clamping spring 733, and the igniter 71 and the thermocouple 70 are clamped and fixed by the clamping spring 733), and then the fixing bracket 73 is fixedly connected with the connecting rib 15 (for example, the fixing bracket 73 is first positioned by the positioning hole of the fixing bracket 73 and the positioning protrusion 153 of the mounting protrusion of the connecting rib 15, and then the fixing bracket 73 is fixedly connected with the second fixing part 151 of the connecting rib 15), and then the flow guide ring 50 is installed on the first fixing part 1314 of the connecting leg 13 of the mounting bracket 10 (for example, the first connecting leg 53 of the flow guide ring 50 is fixedly connected with the first fixing part 1314), and further, the outer ring burner of the two burner units 30 is installed on the connecting leg 13 of the mounting bracket 10 (for example, the outer ring burner is connected to the first connecting part 1311 and the second connecting part 1313 of the connecting part 131 of the mounting bracket 10, respectively), wherein the inner ring burner and the outer ring burner are arranged at intervals in the extension direction of the connecting leg 13, so that they have a height difference, that is, the outer ring burner is located above the inner ring burner, and after the outer ring burner is installed, finally, the gland 90 is installed on the third fixing part 1315 of the connecting leg 13 (for example, the second connecting leg 93 of the gland 90 is fixedly connected with the third fixing part 1315), so that the cover body 91 of the gland 90 abuts against the outer ring burner, and finally the liquid receiving disc is placed above the gland 90. In this way, the installation of the burner 100 and the stove body in the combustion stove and the complete installation process of the burner 100 itself can be realized, which is convenient and fast.

[0118] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0119] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A burner, characterized in that, include: The burner body has a gas passage inside and is provided with an inner ring flame hole and an outer ring flame hole that are respectively connected to the gas passage. The outer ring flame hole is arranged around the outer side of the inner ring flame hole. The burner body also has a gas supply channel that is independent of the gas passage. The gas supply channel includes an air inlet located on the outer side wall of the burner body and an air outlet located between the inner ring flame hole and the outer ring flame hole. and A flow guide ring is disposed at the air outlet and cooperates with the inner wall of the air supply channel to define an inner ring air supply port and an outer ring air supply port that flow toward the inner ring flame hole and the outer ring flame hole, respectively. The flow guide ring includes a flow guide body disposed at the air outlet. The flow guide body has an outer edge and an inner edge. The outer edge cooperates with the inner wall of the air supply channel to define the outer ring air supply port, and the inner edge cooperates with the inner wall of the air supply channel to define the inner ring air supply port. The flow guide body is inclined downward in the direction from the outer edge to the inner edge. In the height direction of the burner, the flow guide body is located above the inner ring flame hole, and the projection of the inner ring flame hole on the horizontal plane is located within the area of ​​the projection of the flow guide body on the same horizontal plane.

2. The burner as claimed in claim 1, characterized in that, It also includes a mounting bracket, which has two connecting parts and a first fixing part, and the flow guide ring is connected to the first fixing part; The burner body includes two separately arranged burner units, one of which is connected to a connecting part, wherein one of the burner units forms the inner ring flame hole, and the other burner unit forms the outer ring flame hole; The interior of each burner unit is formed as the gas passage, and the gap between two burner units is formed as the gas supply passage.

3. The burner as described in claim 2, characterized in that, The mounting bracket includes a base and at least two connecting legs connected to the base. The connecting legs extend in the height direction of the burner and have the two connecting portions and the first fixing portion. The two burner units are arranged at intervals in the extending direction of the connecting legs. The air supply channel is formed by the gap between the two burner units in the height direction of the burner.

4. The burner as described in claim 3, characterized in that, The guide ring also includes a first connecting foot connected to the outer edge of the guide body, and the first connecting foot is connected to the first fixing part.

5. The burner as described in claim 4, characterized in that, The first connecting foot and the surface of the connecting part are fitted together to press and fix the burner unit with an inner ring flame hole.

6. The burner as claimed in claim 3, characterized in that, The flow guide ring has an outer edge and an inner edge; Wherein, in the height direction of the burner, the distance between the upper surface of the portion of the burner unit that constitutes the inner ring fire hole and the inner edge is greater than 0 mm and less than or equal to 8 mm. And / or, in the height direction of the burner, the distance between the lower surface of the portion of the burner unit that forms the outer ring fire hole and the outer edge is greater than 0 mm and less than or equal to 15 mm; And / or, in the radial direction of the burner unit, the distance between the end face of the inner ring flame hole and the inner edge is greater than or equal to 0 mm and less than or equal to 5 mm; And / or, in the radial direction of the burner unit, the distance between the end face of the outer ring fire hole and the outer edge is greater than or equal to 10 mm and less than or equal to 30 mm.

7. The burner according to any one of claims 2 to 6, characterized in that, It also includes an oil cup, which is fixed to the mounting bracket and located inside the inner ring fire hole, and the oil cup has a receiving cavity for containing waste.

8. The burner as claimed in claim 7, characterized in that, The mounting bracket includes a base, and the oil cup includes a cup body and a handle. The cup body is fixed to the base, and the handle is connected to the cup body and extends in a direction away from the base. The outer peripheral surface of the handle and the inner sidewall of the cup body form the receiving cavity. And / or, the mounting bracket includes a base, the outer edge of the oil cup forms a supporting outer edge, the supporting outer edge is hung on the overlapping edge of the base, the supporting outer edge near the base forms a first guide surface, and the overlapping edge of the base forms a second guide surface that guides and cooperates with the first guide surface.

9. The burner according to any one of claims 2 to 6, characterized in that, It also includes a thermocouple and an igniter fixed on the mounting bracket, and the flow guide ring has a clearance hole for the thermocouple and the igniter to pass through.

10. The burner as claimed in claim 9, characterized in that, It also includes a mounting bracket, on which the thermocouple and the igniter are mounted; The mounting bracket includes a base, at least two connecting legs, and a connecting rib. The at least two connecting legs are connected to the base, and the connecting rib is connected to the base and / or the connecting legs. The connecting legs extend in the height direction of the burner and have the two connecting portions and the first fixing portion. The connecting rib has a second fixing portion. The fixing bracket is connected to the second fixing part.

11. The burner as claimed in claim 10, characterized in that, The connecting rib also has a positioning protrusion, and the fixing bracket has a positioning hole that positions and cooperates with the positioning protrusion. And / or, the fixing bracket includes a frame body and two clamping springs, the frame body is connected to the second fixing part, and the two clamping springs are connected to the frame body, wherein one of the clamping springs is used to clamp or release the thermocouple, and the other clamping spring is used to clamp or release the igniter; And / or, the connecting rib is connected between the two connecting legs.

12. The burner according to any one of claims 2 to 6, characterized in that, The mounting bracket includes a base and at least two connecting legs connected to the base. The connecting legs extend in the height direction of the burner and have the two connecting parts, the first fixing part, and the third fixing part. The two burner units are arranged at intervals in the extension direction of the connecting legs. The burner also includes a pressure cap, which includes a cap body and at least two second connecting feet connected to the outer edge of the cap body. One second connecting foot is connected to the third fixing part, and the other second connecting foot is connected to the connecting part to cooperate with the connecting feet to clamp and fix the two burner units.

13. The burner as claimed in claim 2, characterized in that, The mounting bracket includes a base and at least two connecting legs connected to the base, the connecting legs having the two connecting portions and the first fixing portion; The burner unit includes an ejector tube section and a furnace head fixedly connected to the ejector tube section. The interior of the ejector tube section and the interior of the furnace head together form the gas passage. The furnace head is provided with an inner ring flame hole or an outer ring flame hole. The ejector tube section is connected to a connecting leg through a connecting part, and the furnace head is connected to the remaining connecting legs through the connecting part.

14. The burner as claimed in claim 13, characterized in that, The ejector tube includes an ejector tube and a mounting edge. The ejector tube forms an ejection channel that connects to the inner annular fire hole or the outer annular fire hole. The mounting edge is connected to the outer edge of the ejector tube. The connecting part includes a first connecting part disposed on a connecting leg corresponding to the ejector tube part, and the mounting edge is fixedly connected to the first connecting part.

15. The burner as claimed in claim 14, characterized in that, The first connecting part is a first connecting hole provided on the connecting leg, and the mounting edge is provided with a second connecting hole. The mounting edge and the connecting leg are fixedly connected to the first connecting hole and the second connecting hole by a fastener.

16. The burner as claimed in claim 13, characterized in that, The furnace head includes a combustion ring and a skirt. The combustion ring has a combustion channel that connects to the inner ring fire hole or the outer ring fire hole. The skirt is located around the outer edge of the combustion ring. The connecting part includes a second connecting part disposed on a connecting bracket corresponding to the furnace head, and the skirt is connected to the second connecting part.

17. The burner as claimed in claim 16, characterized in that, The second connecting part is a slot formed on the connecting leg, and the skirt is engaged in the slot so that the skirt and the connecting leg are fixedly connected.

18. The burner according to any one of claims 13 to 17, characterized in that, Each burner unit includes an upper shell and a lower shell, the upper shell and the lower shell are covered and connected, a portion of the structure of the upper shell and a portion of the structure of the lower shell together form the ejector tube section, and the remaining portion of the structure of the upper shell and the remaining portion of the structure of the lower shell together form the furnace head. Both the upper shell and the lower shell are made of stainless steel.

19. The burner as claimed in claim 18, characterized in that, The burner unit with the inner ring flame hole also includes a first partition plate. A gap is formed between the portion of the upper shell that forms the inner ring flame hole and the portion of the lower shell that forms the inner ring flame hole. The first partition plate is disposed in the gap and divides the inner ring flame hole into two sub-inner ring flame holes that are directly opposite each other in the height direction of the burner. And / or, the burner unit with the outer ring flame hole also includes a second partition, and a gap is formed between the portion of the upper shell that forms the outer ring flame hole and the portion of the lower shell that forms the outer ring flame hole, the second partition is disposed in the gap, and divides the outer ring flame hole into two sub-outer ring flame holes that are directly opposite each other in the height direction of the burner.

20. A combustion stove, characterized in that, Includes the burner as described in any one of claims 1 to 19.

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