A burner structure with an outer ring multi-gas channel stainless steel burner head

Abstract

A burner structure with an outer ring multi-gas channel stainless steel burner head, comprising a burner head and a flame divider arranged on the burner head; the flame divider comprises a chassis, an annular upper seat arranged in the chassis, a first outer fire cover arranged on the chassis and the upper seat, and a second outer fire cover and an inner fire cover located inside the first outer fire cover; a notch portion for the inner fire cover to pass upward is arranged at the center of the bottom surface of the chassis; a plurality of first ventilation notches uniformly distributed along the circumferential direction and located outside the notch portion are arranged on the chassis; the upper seat is provided with second ventilation notches opposite to the first ventilation notches, and the number of the second ventilation notches is the same as the number of the first ventilation notches and corresponds one to one; the first ventilation notches and the second ventilation notches are located below between the first outer fire cover and the second outer fire cover. The provision of the first ventilation notch and the second ventilation notch of the present invention promotes continuous replenishment of air outside the burner to the second outer fire cover.

Description

Technical Field

[0001] The invention relates to a burner structure with an outer ring multi-gas channel stainless steel burner head. Background Art

[0002] The burner comprises a burner head and a flame distributor arranged on the burner head.

[0003] When a traditional burner is burning, there is no air replenishment channel in the ignition distributor and the ignition distributor structure is too complicated, which blocks the air from replenishing the ignition distributor through the bottom of the ignition distributor, which is not conducive to the continuous and complete combustion of the gas and has certain limitations.

[0004] In addition, the burner head is generally made of cast iron. The problem is that the cast iron burner head has defects such as easy corrosion, heavy weight, high heat storage, and environmental pollution, while the cast aluminum burner head and die-cast aluminum burner head have defects such as low temperature resistance, easy deformation, poor durability, and high cost, all of which have certain limitations.

[0005] Additionally, the air and gas in a conventional burner are mixed in two structures.

[0006] The first mixing is when the gas is input into the ejector tube. Due to the negative pressure, the air is brought into the ejector tube, and the gas and air are transported in the ejector tube and mixed for the first time. The first mixed gas is transported to the ignition distributor for secondary mixing, and then output from the ignition distributor and ignited.

[0007] That is, the gas and air will complete the first mixing in the burner and the second mixing in the distributor.

[0008] In actual use, the mixing of air and gas is not sufficient, resulting in incomplete combustion, low gas utilization, and easy formation of carbon black on the ignition distributor, which has certain limitations.

[0009] Therefore, further improvements are needed. Summary of the invention

[0010] The object of the present invention is to provide a burner structure with an outer ring multi-air channel stainless steel burner head, wherein the arrangement of the first ventilation gap and the second ventilation gap promotes the continuous replenishment of air outside the burner to the second outer fire cover.

[0011] The object of the present invention is achieved in that:

[0012] A burner structure with an outer ring multi-gas channel stainless steel burner head, comprising a burner head and a flame distributor arranged on the burner head;

[0013] The fire distributor comprises a chassis, an annular upper seat arranged in the chassis, a first outer fire cover arranged on the chassis and the upper seat, and a second outer fire cover and an inner fire cover located inside the first outer fire cover;

[0014] A notch is provided at the center of the bottom surface of the chassis for the inner fire cover to pass through upwards;

[0015] The chassis is provided with a plurality of first ventilation notches evenly distributed along the circumferential direction and located outside the notch portion;

[0016] The upper seat is provided with second ventilation gaps opposite to the first ventilation gaps, and the number of the second ventilation gaps is the same as the number of the first ventilation gaps and corresponds one to one;

[0017] The first ventilation gap and the second ventilation gap are located below between the first outer fire cover and the second outer fire cover.

[0018] The edge of the notch is provided with a first annular inner vertical plate extending upward, and the outer edge of the bottom plate is provided with a second annular outer vertical plate extending upward;

[0019] The upper seat comprises an annular bottom plate arranged on the bottom surface of the chassis, a third annular inner vertical plate extending upward from the inner edge of the annular bottom plate, and a fourth annular outer vertical plate extending upward from the outer edge of the annular bottom plate;

[0020] The third annular inner vertical plate and the fourth annular outer vertical plate are located between the first annular inner vertical plate and the second annular outer vertical plate;

[0021] The second ventilation gap is arranged on the annular bottom plate.

[0022] The outer side of the first outer fire cover is arranged on the second annular outer vertical plate, and the inner side of the first outer fire cover is arranged on the fourth annular outer vertical plate;

[0023] The outer side of the second outer fire cover is arranged on the third annular inner vertical plate, and the inner side of the second outer fire cover is arranged on the first annular inner vertical plate.

[0024] A first gas passage is formed between the first outer fire cover, the bottom plate and the upper seat, and a second gas passage is formed between the bottom plate and the upper seat of the second outer fire cover.

[0025] A lower concave portion located outside the first annular inner vertical plate is provided between two adjacent first ventilation notches, and the upper seat passes above the lower concave portion;

[0026] The bottom surface of the lower concave portion is provided with an air inlet, the lower concave portion is communicated with the first gas channel and the second gas channel respectively, the number of the air inlets is the same as the number of the lower concave portions and the air inlets correspond to the lower concave portions one by one;

[0027] The air inlet is provided with a connecting pipe extending downward.

[0028] The furnace head comprises an outer ring ejector pipe, an inner ejector pipe and an outer ring gas mixing hood, all of which are made of stainless steel;

[0029] A secondary mixing chamber for mixing air and gas is provided inside the outer ring mixing hood;

[0030] The outer ring mixing hood is provided with an outer air inlet hole at the bottom, and a plurality of outer ring air outlet pipes arranged at intervals are provided at the upper part of the outer ring mixing hood, and the outer air inlet hole and the outer ring air outlet pipe are respectively connected to the secondary mixing chamber;

[0031] One end of the outer ring ejector pipe is connected to the outer air inlet hole, one end of the inner ejector pipe passes through the outer ring mixing cover upward and is not connected to the secondary mixing chamber, and the inner fire cover is arranged on the end of the inner ejector pipe passing through the outer ring mixing cover upward;

[0032] The fire distributor is arranged on the outer ring gas mixing hood, the number of the outer ring gas outlet pipes is the same as the number of the gas inlets, and the outer ring gas outlet pipes correspond to the gas inlets one by one;

[0033] The air inlet is communicated with the corresponding outer ring air outlet pipe, and the outer ring air outlet pipe extends into the corresponding connecting pipe.

[0034] A fixing plate connecting the outer ring ejector tube and the inner ejector tube is provided between the two.

[0035] The ends of the outer ring ejector tube and the inner ejector tube away from the positioning plate are both provided with damper baffles;

[0036] The outer ring ejector tube and the inner ejector tube are respectively made of stainless steel tubes in one piece;

[0037] The number of the outer ring air outlet pipes is four and they are evenly distributed on the upper part of the outer ring air mixing hood along the circumferential direction.

[0038] The outer ring mixing hood includes an annular base, an annular inner enclosure plate connected to the inner edge of the annular base and extending upward, an annular outer enclosure plate connected to the outer edge of the annular base and extending upward, and an upper cover plate arranged on the annular inner enclosure plate and the annular outer enclosure plate;

[0039] The annular bottom support, the annular inner plate, the annular outer plate and the upper cover plate form a secondary mixing chamber;

[0040] The outer air inlet is arranged on the annular base, the outer ring air outlet is arranged on the upper cover, and one end of the inner ejector extends from the center of the bottom of the annular base and passes through the upper cover upwards.

[0041] The upper surface of the upper cover plate is respectively provided with stamped annular bosses corresponding to the inner ejector pipe and the outer ring air outlet pipe, the inner ejector pipe and the outer ring air outlet pipe pass through the corresponding annular bosses upward, and the connecting pipe rests on the corresponding annular bosses;

[0042] An annular skirt is arranged at the bottom of the outer ring air outlet pipe, the diameter of the annular skirt gradually increases from top to bottom, and the annular skirt abuts against the bottom surface of the upper cover plate.

[0043] The upper cover plate is provided with mounting holes for mounting an ignition needle and a thermocouple;

[0044] The mounting hole is located on the inner side of the annular inner panel, and a positioning assembly is provided at the bottom of the mounting hole;

[0045] The positioning assembly includes a first flat plate arranged at the bottom of the upper cover plate and a bracket arranged at the bottom of the first flat plate;

[0046] The bracket includes a second flat plate, first vertical plates extending upward from opposite side edges of the second flat plate, and a third flat plate extending outward from the top of the first vertical plate;

[0047] The third plate is arranged at the bottom of the first plate, and the positioning assembly is provided with a through hole which passes through the first plate and the second plate and is opposite to the mounting hole, and the diameter of the through hole is smaller than the diameter of the mounting hole;

[0048] A fixing bracket is provided at the bottom of the annular base;

[0049] The fixing bracket includes a fourth flat plate, a second vertical plate extending upward from the left and right side edges of the fourth flat plate, and a fifth flat plate extending inward from the top of the second vertical plate;

[0050] The fifth flat plate is arranged on the bottom of the annular base, the outer ring ejector tube and the inner ejector tube are located between the second vertical plates on the left and right sides of the fourth flat plate, and the fourth flat plate is located below the outer ring ejector tube and the inner ejector tube.

[0051] Additional aspects and advantages of the present invention will become apparent in the following description, and will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 Schematic diagram of a burner structure according to an embodiment of the present invention.

[0053] Figure 2 This is an exploded view of the burner structure of one embodiment of the present invention.

[0054] Figure 3 This is a schematic diagram of the structure of a fire divider hiding a first outer fire cover and a second outer fire cover according to an embodiment of the present invention.

[0055] Figure 4 It is a structural schematic diagram of a base according to an embodiment of the present invention.

[0056] Figure 5 It is a structural schematic diagram of a base according to an embodiment of the present invention.

[0057] Figure 6 The figure is a schematic structural diagram of a furnace head according to an embodiment of the present invention.

[0058] Figure 7It is a cross-sectional view of an embodiment of the present invention.

[0059] Figure 8 for Figure 7 A partial enlarged view.

[0060] Fig. 9 FIG. 1 is an exploded view of a positioning assembly according to an embodiment of the present invention.

[0061] Fig.10 The figure is an exploded view of a furnace head according to an embodiment of the present invention. DETAILED DESCRIPTION

[0062] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0063] See also Figure 1-Figure 10 The burner structure of the stainless steel burner with outer ring multi-gas channel comprises a burner 100 and a flame distributor 200 arranged on the burner 100;

[0064] A secondary air inlet area is formed between the bottom surface of the flame distributor 200 and the burner head 100 .

[0065] The fire distributor 200 includes a base plate 232, an annular upper seat 210 disposed in the base plate 232, a first outer fire cover 233 disposed on the base plate 232 and the upper seat 210, and a second outer fire cover 234 and an inner fire cover 235 located inside the first outer fire cover 233;

[0066] The first outer fire cover 233 and the second outer fire cover 234 are both ring-shaped.

[0067] The upper parts of the outer sides of the first outer fire cover 233, the second outer fire cover 234 and the inner fire cover 235 are all provided with a plurality of air outlet holes spaced apart along the circumferential direction. The air outlet holes are arranged obliquely, and the outer sides of the air outlet holes are higher than the inner sides of the air outlet holes.

[0068] The center of the bottom surface of the bottom plate 232 is provided with a notch 236 for the inner fire cover 235 to pass through upwards;

[0069] The bottom plate 232 is provided with a plurality of first ventilation notches 245 evenly distributed along the circumferential direction and located outside the notch portion 236;

[0070] The upper seat 210 is provided with second ventilation holes 246 opposite to the first ventilation holes 245, and the number of the second ventilation holes 246 is the same as the number of the first ventilation holes 245 and corresponds one to one;

[0071] In this embodiment, the number of the first ventilation openings 245 and the number of the second ventilation openings 246 are both four.

[0072] The first ventilation gap 245 and the second ventilation gap 246 are both strip-shaped and extend in the circumferential direction.

[0073] The first ventilation gap 245 and the second ventilation gap 246 are located below between the first outer fire cover 233 and the second outer fire cover 234 .

[0074] The air is replenished upward to the second outer fire cover 234 through the bottom of the flame distributor 200 and the surface of the burner head 100 (ie, the secondary air inlet area), the first ventilation gap 245 and the second ventilation gap 246 .

[0075] The setting of the first ventilation gap 245, the second ventilation gap 246 and the secondary air inlet area promotes the continuous replenishment of air outside the burner to the second outer fire cover 234 of the burner in the ignition state, which is beneficial to the full combustion of the gas and improves the thermal efficiency.

[0076] Furthermore, the edge of the notch portion 236 is provided with a first annular inner vertical plate 237 extending upward, and the outer edge of the bottom plate 232 is provided with a second annular outer vertical plate 238 extending upward;

[0077] The upper seat 210 includes an annular bottom plate 240 disposed on the bottom surface of the bottom plate 232, a third annular inner vertical plate 241 extending upward from the inner edge of the annular bottom plate 240, and a fourth annular outer vertical plate 242 extending upward from the outer edge of the annular bottom plate 240;

[0078] The third annular inner vertical plate 241 and the fourth annular outer vertical plate 242 are located between the first annular inner vertical plate 237 and the second annular outer vertical plate 238;

[0079] The second ventilation opening 246 is disposed on the annular bottom plate 240 .

[0080] The bottom plate 232 and the annular bottom plate 240 are connected by screw locking.

[0081] Furthermore, the outer side of the first outer fire cover 233 is arranged on the second annular outer vertical plate 238 , and the inner side of the first outer fire cover 233 is arranged on the fourth annular outer vertical plate 242 , so as to realize the installation and setting of the first outer fire cover 233 .

[0082] The outer side of the second outer fire cover 234 is arranged on the third annular inner vertical plate 241 , and the inner side of the second outer fire cover 234 is arranged on the first annular inner vertical plate 237 , so as to realize the installation and setting of the second outer fire cover 234 .

[0083] Furthermore, a first gas passage 43 is formed between the first outer fire cover 233 , the bottom plate 232 and the upper seat 210 , and a second gas passage 44 is formed between the second outer fire cover 234 , the bottom plate 232 and the upper seat 210 .

[0084] Furthermore, a lower concave portion 239 located outside the first annular inner vertical plate 237 is provided between two adjacent first ventilation notches 245, and the upper seat 210 passes above the lower concave portion 239;

[0085] The bottom surface of the lower concave portion 239 is provided with an air inlet 231, and the lower concave portion 239 is communicated with the first gas channel 43 and the second gas channel 44 respectively. The number of the air inlets 231 is the same as the number of the lower concave portions 239, and the air inlets 231 correspond to the lower concave portions 239 one by one.

[0086] The air inlet 231 is provided with a connecting pipe 247 extending downward.

[0087] In this embodiment, the number of the lower recess 239 , the number of the air inlet 231 and the number of the connecting pipe 247 are all four.

[0088] The first gas channel 43 and the second gas channel 44 constitute an outer ring fire gas cavity, that is, the mixed gas input from the air inlet 231 of the lower recess 239 can be transported to the first outer fire cover 233 and the second outer fire cover 234, and the first outer fire cover 233 and the second outer fire cover 234 share the outer ring fire gas cavity.

[0089] Compared with the use of a single first outer fire cover 233, adding the second outer fire cover 234 can increase the effective hole distribution area of ​​the air outlet holes.

[0090] The second outer fire cover 234 and the second gas channel 44 are provided to effectively divert the mixed gas entering the outer ring fire gas cavity, so that the burner can realize three-ring fire combustion.

[0091] Furthermore, the furnace head 100 includes an outer ring ejector pipe 101, an inner ejector pipe 102 and an outer ring gas mixing hood 103, all of which are made of stainless steel;

[0092] More specifically, a secondary air inlet area is formed between the bottom surface of the ignition distributor 200 and the upper surface of the outer ring mixing hood 103 .

[0093] The outer ring ejector tube 101, the inner ejector tube 102 and the outer ring mixing hood 103 constitute a stainless steel burner head. The stainless steel burner head is light in weight, not easy to corrode and deform, which is conducive to the long-term use of the stainless steel burner head. The amount of raw materials used is less than that of a cast iron burner head, which effectively reduces the cost of the burner head.

[0094] In this embodiment, the outer ring ejector tube 101 is located on the left side of the inner ejector tube 102 .

[0095] The outer ring mixing hood 103 is provided with a secondary mixing chamber 1031 for mixing air and gas;

[0096] The outer ring mixing hood 103 is provided with an outer air inlet hole 1032 at the bottom, and a plurality of outer ring air outlet pipes 1033 arranged at intervals are provided at the upper part of the outer ring mixing hood 103. The outer air inlet hole 1032 and the outer ring air outlet pipe 1033 are respectively connected to the secondary mixing chamber 1031;

[0097] In this embodiment, the gas and air are mixed for the first time in the ejector tube 102 inside the outer ring ejector tube 101 respectively, and the gas mixed for the first time is transported to the outer ring mixing hood 103 for secondary mixing, that is, the gas and air are mixed twice in the burner head 100 structure and then transported to the ignition distributor 200.

[0098] The provision of the outer ring mixing hood 103 further promotes the mixing of the fuel gas and the air, making the subsequent combustion more complete, improving the utilization rate of the fuel gas, and reducing the subsequent generation of carbon black.

[0099] One end of the outer ring ejector tube 101 is connected to the outer air inlet hole 1032, one end of the inner ejector tube 102 passes through the outer ring mixing cover 103 upwards and is not connected to the secondary mixing chamber 1031, and the inner fire cover 235 is arranged on the end of the inner ejector tube 102 passing through the outer ring mixing cover 103 upwards;

[0100] The ignition distributor 200 is arranged on the outer ring mixing hood 103, the number of the outer ring air outlet pipes 1033 is the same as the number of the air inlets 231, and the outer ring air outlet pipes 1033 correspond to the air inlets 231 one by one;

[0101] The arrangement of multiple outer ring air outlet pipes 1033 enables the stainless steel furnace head 100 structure to have multiple outer ring fire conveying air passages.

[0102] The air inlet 231 is communicated with the corresponding outer ring air outlet pipe 1033 , and the outer ring air outlet pipe 1033 extends into the corresponding connecting pipe 247 .

[0103] Furthermore, a fixing plate 23 is provided between the outer ring ejector tube 101 and the inner ejector tube 102 to connect the two.

[0104] The fixing plate 23 is located behind the fixing bracket 500 .

[0105] The fixing plate 23 is U-shaped, and two ends of the fixing plate 23 are respectively connected to the outer ring ejector tube 101 and the inner ejector tube 102 , and the bottom of the fixing plate 23 is fixed to the bottom shell of the stove by screws.

[0106] The ends of the outer ring ejector tube 101 and the inner ejector tube 102 away from the positioning plate are both provided with a damper baffle 24;

[0107] The damper baffle 24 is used to limit the maximum air intake of the primary air, fix the nozzle, and ensure the coaxiality between the nozzle and the outer ring ejector tube 101 and the inner ejector tube 102. The nozzle is fixed to the damper baffle 24 by radial interference fit and axial snap fit.

[0108] The outer ring ejector tube 101 and the inner ejector tube 102 are respectively made of stainless steel tubes in one piece;

[0109] The number of the outer ring air outlet pipes 1033 is four and they are evenly distributed on the upper part of the outer ring air mixing hood 103 along the circumferential direction.

[0110] The provision of multiple outer ring air outlet pipes 1033 allows the mixed gas in the outer ring mixing hood 103 to be evenly distributed to the inner part of the outer ring fire gas cavity of the ignition distributor 200 .

[0111] Furthermore, the outer ring mixing hood 103 includes an annular base 1034, an annular inner enclosure plate 1035 connected to the inner edge of the annular base 1034 and extending upward, an annular outer enclosure plate 1036 connected to the outer edge of the annular base 1034 and extending upward, and an upper cover plate 1037 disposed on the annular inner enclosure plate 1035 and the annular outer enclosure plate 1036;

[0112] The annular bottom support 1034, the annular inner plate 1035, the annular outer plate 1036 and the upper cover plate 1037 form a secondary mixing chamber 1031;

[0113] The outer air inlet 1032 is arranged on the annular base 1034 , the outer ring air outlet pipe 1033 is arranged on the upper cover 1037 , and one end of the inner ejector pipe 102 extends from the center of the bottom of the annular base 1034 and passes through the upper cover 1037 upwards.

[0114] The outer air inlet 1032 is located on the left portion of the annular base 1034 .

[0115] The outer edge and inner edge of the annular base 1034 are respectively provided with an outer upper flange 1025 and an inner upper flange 1026, and the outer edge of the upper cover 1037 is provided with a lower flange 1027;

[0116] The annular outer plate 1036 is disposed on the inner side of the outer upper flange 1025 and the lower flange 1027 , and the annular inner plate 1035 is disposed on the outer side of the inner upper flange 1026 .

[0117] The annular base 1034, the annular inner enclosure plate 1035, the annular outer enclosure plate 1036, the upper cover plate 1037 and the outer ring air outlet pipe 1033 are finally fixed by welding.

[0118] Furthermore, the upper surface of the upper cover plate 1037 is respectively provided with stamped annular bosses 1038 corresponding to the inner ejector tube 102 and the outer ring air outlet tube 1033, the inner ejector tube 102 and the outer ring air outlet tube 1033 pass through the corresponding annular bosses 1038 upwards, and the connecting tube 247 abuts against the corresponding annular bosses 1038;

[0119] The outer ring ejector pipe 101, the inner ejector pipe 102 and the outer ring gas outlet pipe 1033 are finally fixed on the outer ring gas mixing cover 103 by welding.

[0120] The arrangement of the connecting pipe 247 and the annular boss 1038 creates a spacing interval between the bottom surface of the ignition distributor 200 and the upper surface of the outer ring mixing hood 103, namely, the secondary air inlet interval.

[0121] The ignition divider 200 and the burner head 100 are connected only by the connecting pipe 247, the annular boss 1038 and the outer ring air outlet pipe 1033. The upper surface of the outer ring mixing hood 103 only has the annular boss 1038 and the outer ring air outlet pipe 1033. The structure is simple and will not block the air from being replenished upward to the ignition divider 200.

[0122] An annular skirt 1039 is provided at the bottom of the outer ring air outlet pipe 1033 . The diameter of the annular skirt 1039 gradually increases from top to bottom, and the annular skirt 1039 abuts against the bottom surface of the upper cover plate 1037 .

[0123] Furthermore, the upper cover plate 1037 is provided with mounting holes 1040 for mounting the ignition needle 28 and the thermocouple 29 ; that is, there are two mounting holes 1040 , which are respectively located on the right side and the front of one end of the inner ejector tube 102 passing through the upper cover plate 1037 .

[0124] The ignition needle 28 is located in front of one end of the inner ejector tube 102 passing through the upper cover plate 1037 , and the thermocouple 29 is located on the right side of one end of the inner ejector tube 102 passing through the upper cover plate 1037 .

[0125] The mounting hole 1040 is located on the inner side of the annular inner enclosure plate 1035, and a positioning assembly is disposed at the bottom of the mounting hole 1040;

[0126] The positioning assembly includes a first plate 414 disposed at the bottom of the upper cover plate 1037 and a bracket disposed at the bottom of the first plate 414;

[0127] The outer ring air outlet pipe 1033 , the first flat plate 414 , the bracket, the fixing bracket 500 , the fixing sheet 23 and the air door baffle 24 are all made of stainless steel.

[0128] The bracket includes a second flat plate 415, first vertical plates 416 extending upward from opposite side edges of the second flat plate 415, and a third flat plate 417 extending outward from the top of the first vertical plate 416;

[0129] The third plate 417 is disposed at the bottom of the first plate 414. The positioning assembly is provided with a through hole 418 that passes through the first plate 414 and the second plate 415 and is opposite to the mounting hole 1040. The diameter of the through hole 418 is smaller than the diameter of the mounting hole 1040.

[0130] The third plate 417 and the first plate 414 are fixedly connected by screws or riveted.

[0131] A positioning platform 30 is provided in the middle of the side of the ignition needle 28 and the thermocouple 29 . The diameter of the positioning platform 30 is smaller than the diameter of the mounting hole 1040 and larger than the diameter of the through hole 418 .

[0132] The lower parts of the ignition needle 28 and the thermocouple 29 are inserted downward into the corresponding through holes 418 , and the positioning platform 30 is disposed against the corresponding first plate 414 . The positioning platform 30 is located in the corresponding mounting hole 1040 and does not protrude from the mounting hole 1040 .

[0133] The ignition needle 28 and the thermocouple 29 pass through the notch 236 upward, and a first spacing interval for air replenishment is reserved between the inner ignition cover 235 and the notch 236 .

[0134] The first spacing interval, the first ventilation gap 245, the second ventilation gap 246 and the secondary air inlet interval promote the continuous replenishment of air outside the burner to the burner in the ignition state, which is beneficial to the full combustion of the gas and improves the thermal efficiency.

[0135] A fixing bracket 500 is provided at the bottom of the annular base 1034;

[0136] The fixing bracket 500 includes a fourth flat plate 501, second vertical plates 502 extending upward from left and right side edges of the fourth flat plate 501, and a fifth flat plate 503 extending inward from the top of the second vertical plate 502.

[0137] The fifth flat plate 503 is arranged on the bottom of the annular base 1034 , the outer ring ejector tube 101 and the inner ejector tube 102 are located between the second vertical plates 502 on the left and right sides of the fourth flat plate 501 , and the fourth flat plate 501 is located below the outer ring ejector tube 101 and the inner ejector tube 102 .

[0138] The fourth plate 501 is fixed to the bottom shell of the stove by screws.

[0139] The fixing bracket 500 has a simple structure and low processing cost.

[0140] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A burner structure with an outer ring multi-gas channel stainless steel burner head, characterized in that: It comprises a burner head (100) and a flame distributor (200) arranged on the burner head (100); The fire distributor (200) comprises a base plate (232), an annular upper seat (210) arranged inside the base plate (232), a first outer fire cover (233) arranged on the base plate (232) and the upper seat (210), a second outer fire cover (234) and an inner fire cover (235) located inside the first outer fire cover (233); A notch (236) for the inner fire cover (235) to pass through upwards is provided at the center of the bottom surface of the bottom plate (232); The bottom plate (232) is provided with a plurality of first ventilation notches (245) evenly distributed along the circumferential direction and located outside the notch portion (236); The upper seat (210) is provided with second ventilation holes (246) opposite to the first ventilation holes (245), and the number of the second ventilation holes (246) is the same as the number of the first ventilation holes (245) and corresponds one to one; The first ventilation notch (245) and the second ventilation notch (246) are located below between the first outer fire cover (233) and the second outer fire cover (234); The edge of the notch (236) is provided with a first annular inner vertical plate (237) extending upward, and the outer edge of the bottom plate (232) is provided with a second annular outer vertical plate (238) extending upward; The upper seat (210) comprises an annular bottom plate (240) arranged on the bottom surface of the bottom plate (232), a third annular inner vertical plate (241) extending upward from the inner edge of the annular bottom plate (240), and a fourth annular outer vertical plate (242) extending upward from the outer edge of the annular bottom plate (240); The third annular inner vertical plate (241) and the fourth annular outer vertical plate (242) are located between the first annular inner vertical plate (237) and the second annular outer vertical plate (238); The outer side of the first outer fire cover (233) is arranged on the second annular outer vertical plate (238), and the inner side of the first outer fire cover (233) is arranged on the fourth annular outer vertical plate (242); A first gas passage (43) is formed between the first outer fire cover (233), the bottom plate (232) and the upper seat (210); a second gas passage (44) is formed between the bottom plate (232) and the upper seat (210) of the second outer fire cover (234); A lower recess (239) located outside the first annular inner vertical plate (237) is provided between two adjacent first ventilation notches (245), and the upper seat (210) passes above the lower recess (239); An air inlet (231) is provided on the bottom surface of the lower recess (239), and the lower recess (239) is communicated with the first gas channel (43) and the second gas channel (44) respectively; The second ventilation notch (246) is arranged on the annular bottom plate (240); The outer side of the second outer fire cover (234) is arranged on the third annular inner vertical plate (241), and the inner side of the second outer fire cover (234) is arranged on the first annular inner vertical plate (237); The number of the air inlets (231) is the same as the number of the lower recesses (239), and the air inlets (231) correspond to the lower recesses (239) in a one-to-one manner; The air inlet (231) is provided with a connecting pipe (247) extending downwards; The furnace head (100) comprises an outer ring ejector pipe (101), an inner ejector pipe (102) and an outer ring gas mixing hood (103), all of which are made of stainless steel; A secondary mixing chamber (1031) for mixing air and gas is provided inside the outer ring mixing hood (103); The outer ring gas mixing hood (103) is provided with an outer air inlet hole (1032) at the bottom, and a plurality of outer ring gas outlet pipes (1033) arranged at intervals are provided at the top of the outer ring gas mixing hood (103), and the outer air inlet hole (1032) and the outer ring gas outlet pipes (1033) are respectively connected to the secondary mixing chamber (1031); One end of the outer ring ejector tube (101) is in communication with the outer air inlet hole (1032), one end of the inner ejector tube (102) passes upward through the outer ring gas mixing cover (103) and is not in communication with the secondary mixing chamber (1031), and the inner fire cover (235) is arranged on the end of the inner ejector tube (102) passing upward through the outer ring gas mixing cover (103); The ignition distributor (200) is arranged on the outer ring gas mixing hood (103), the number of the outer ring gas outlet pipes (1033) is the same as the number of the gas inlets (231), and the outer ring gas outlet pipes (1033) correspond to the gas inlets (231) in a one-to-one manner; The air inlet (231) is in communication with a corresponding outer ring air outlet pipe (1033), and the outer ring air outlet pipe (1033) extends into a corresponding connecting pipe (247); A fixing plate (23) is provided between the outer ring ejector tube (101) and the inner ejector tube (102) to connect the two. The ends of the outer ring ejector tube (101) and the inner ejector tube (102) away from the positioning plate are both provided with a damper baffle (24); The outer ring ejector tube (101) and the inner ejector tube (102) are respectively made of stainless steel tubes in one piece; The number of the outer ring air outlet pipes (1033) is four and they are evenly distributed in the circumferential direction on the upper part of the outer ring air mixing hood (103); The outer annular mixing hood (103) comprises an annular base (1034), an annular inner enclosure plate (1035) connected to the inner edge of the annular base (1034) and extending upward, an annular outer enclosure plate (1036) connected to the outer edge of the annular base (1034) and extending upward, and an upper cover plate (1037) arranged on the annular inner enclosure plate (1035) and the annular outer enclosure plate (1036); The annular base (1034), the annular inner enclosure plate (1035), the annular outer enclosure plate (1036) and the upper cover plate (1037) form a secondary mixing chamber (1031); The outer air inlet (1032) is arranged on the annular base (1034), the outer ring air outlet pipe (1033) is arranged on the upper cover plate (1037), and one end of the inner ejector pipe (102) extends from the center of the bottom of the annular base (1034) and passes through the upper cover plate (1037) upwards.

2. The burner structure with an outer ring multi-gas channel stainless steel burner head according to claim 1 is characterized in that: The upper surface of the upper cover plate (1037) is respectively provided with stamped annular bosses (1038) corresponding to the inner ejector tube (102) and the outer ring air outlet tube (1033); the inner ejector tube (102) and the outer ring air outlet tube (1033) pass upward through the corresponding annular bosses (1038), and the connecting tube (247) abuts against the corresponding annular bosses (1038); An annular skirt (1039) is provided at the bottom of the outer ring air outlet pipe (1033), the diameter of the annular skirt (1039) gradually increases from top to bottom, and the annular skirt (1039) abuts against the bottom surface of the upper cover plate (1037).

3. The burner structure with an outer ring multi-gas channel stainless steel burner head according to claim 1 is characterized in that: The upper cover plate (1037) is provided with a mounting hole (1040) for mounting an ignition needle (28) and a thermocouple (29); The mounting hole (1040) is located on the inner side of the annular inner enclosure plate (1035), and a positioning assembly is provided at the bottom of the mounting hole (1040); The positioning assembly comprises a first flat plate (414) arranged at the bottom of the upper cover plate (1037) and a bracket arranged at the bottom of the first flat plate (414); The bracket comprises a second flat plate (415), first vertical plates (416) extending upward from opposite side edges of the second flat plate (415), and a third flat plate (417) extending outward from the top of the first vertical plate (416); The third plate (417) is arranged at the bottom of the first plate (414), and the positioning assembly is provided with a through hole (418) that passes through the first plate (414) and the second plate (415) and is opposite to the mounting hole (1040), and the diameter of the through hole (418) is smaller than the diameter of the mounting hole (1040); A fixing bracket (500) is provided at the bottom of the annular base (1034); The fixing bracket (500) comprises a fourth flat plate (501), second vertical plates (502) extending upward from left and right side edges of the fourth flat plate (501), and a fifth flat plate (503) extending inward from the top of the second vertical plate (502); The fifth flat plate (503) is arranged on the bottom of the annular base (1034); the outer ring ejector tube (101) and the inner ejector tube (102) are located between the second vertical plates (502) on the left and right sides of the fourth flat plate (501); and the fourth flat plate (501) is located below the outer ring ejector tube (101) and the inner ejector tube (102).

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