A double ring burner

Abstract

The application relates to the technical field of burners and discloses a double-ring burner which comprises a base, a distributor is positioned and installed on the base, the distributor comprises a distributor body, an outer gas ring groove and an inner gas ring groove are arranged on the distributor body, the outer gas ring groove is formed by surrounding an outer ring convex wall and an inner ring convex wall, a plurality of outer fire grooves are formed in the upper end surface of the outer ring convex wall, a first flame stabilizing groove is arranged between every two adjacent outer fire grooves, a plurality of inner fire grooves are formed in the upper end surface of the inner ring convex wall, the outer fire grooves, the first flame stabilizing groove and the inner fire grooves are all provided with upper openings, a gas cover for shielding the upper openings is positioned and arranged on the outer gas ring groove, and a central fire cover is arranged on the inner gas ring groove; the double-ring burner enables premixed gas in the outer gas ring groove to be directly output for combustion from the outer fire grooves and the first flame stabilizing groove, the fire hole of the fire cover of the traditional large-diameter outer fire gas groove does not need to be processed, production efficiency is higher, machining precision is reduced, machining difficulty is reduced, and production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of burners, in particular, a double-ring burner. BACKGROUND

[0002] The upper air inlet burner is a kind of cooking stove, and the traditional air distributor on the upper air inlet burner is usually provided with a gas groove, and then a fire cover is arranged on the gas groove, a plurality of fire holes are formed in the fire cover, so that the premixed gas is output for combustion from the plurality of fire holes through the gas groove after entering the gas groove. However, in the structure of the traditional upper air inlet burner, the fire holes of the fire cover need to be machined separately, especially the fire cover of the outer fire gas groove, which has a relatively large diameter, more fire holes need to be machined, and the hole diameter is usually small, especially the flame stabilizing hole, which needs to be specially designed with a smaller hole diameter than the fire hole and higher machining precision, thereby increasing the machining difficulty and cost. SUMMARY

[0003] In order to overcome the defects in the prior art, the present application provides a double-ring burner to solve the problems in the prior art.

[0004] The technical scheme adopted by the present application to solve the technical problem is: a double-ring burner, comprising a base, an air distributor is positioned and installed on the base, the air distributor comprises an air distributor body, an outer gas ring groove and an inner gas ring groove are arranged on the air distributor body with the same center, the outer gas ring groove is formed by an outer ring convex wall and an inner ring convex wall, a plurality of outer fire grooves are formed on the upper end surface of the outer ring convex wall in the circumferential direction, a first flame stabilizing groove is arranged between adjacent two outer fire grooves, a plurality of inner fire grooves are formed on the upper end surface of the inner ring convex wall, the outer fire grooves, the first flame stabilizing groove and the inner fire grooves are all provided with an upper opening, a gas cover for shielding the upper opening is positioned and arranged on the outer gas ring groove, a center fire cover is arranged on the inner gas ring groove, and a plurality of inner fire holes are arranged on the circumferential direction of the center fire cover.

[0005] The present application has the beneficial effects that by directly arranging the outer fire grooves and the first flame stabilizing grooves on the upper end surface of the outer gas ring groove and then directly covering the gas cover, the upper openings of the outer fire grooves and the first flame stabilizing grooves are covered, so that the premixed gas in the outer gas ring groove can be directly output for combustion from the outer fire grooves and the first flame stabilizing grooves, without the need to machine the fire holes of the fire cover of the traditional large-diameter outer fire gas groove, thereby improving the production efficiency, reducing the machining precision, reducing the machining difficulty and reducing the production cost.

[0006] Further, the inner ring convex wall is connected with an outer ring ejector pipe near one side of the inner air ring groove, one end of the outer ring ejector pipe near the inner air ring groove is provided with an outer ring air outlet connected with the outer air ring groove, the other end is provided with an outer ring air inlet, the outer wall of the one end of the outer ring ejector pipe near the outer ring air inlet is connected with the lower end of the igniter body, the outer wall of the middle part of the outer ring ejector pipe is connected with the outer wall of the inner air ring groove, the lower end of the inner air ring groove is connected with one end of the inner ring ejector pipe, the other end is connected with the lower end of the igniter body, one end of the inner ring ejector pipe is provided with an inner ring air outlet connected with the inner air ring groove, the other end is provided with an inner ring air inlet.

[0007] After the above further structure is adopted, the inner air ring groove is arranged in the center of the outer air ring groove through the outer ring ejector pipe and the inner ring ejector pipe, the use cost of the material is effectively reduced, the whole burner is lighter in weight, and a larger air supplement space can be formed between the outer air ring groove and the inner air ring groove, so that the combustion is more sufficient.

[0008] Further, the outer side of the outer ring air inlet is provided with a first air guide port located at the lower end of the igniter body, the outer side of the inner ring air inlet is provided with a second air guide port located at the lower end of the igniter body, the side surface of the base is respectively provided with a first gas pipe connecting port and a second gas pipe connecting port, the first gas pipe connecting port is provided with a first nozzle seat, the side surface of the first nozzle seat is provided with a first nozzle corresponding to the outer ring air inlet, the first nozzle is located in the first air guide port, the second gas pipe connecting port is provided with a second nozzle seat, the side surface of the second nozzle seat is provided with a second nozzle corresponding to the inner ring air inlet, the second nozzle is located in the second air guide port, and the first air guide port and the second air guide port are both in the shape of a trumpet mouth.

[0009] After the above further structure is adopted, the narrow end of the first air guide port faces the outer ring air inlet, the narrow end of the second air guide port faces the inner ring air inlet, and the outer ring air inlet or the inner ring air inlet sprays high-flow-rate gas through the corresponding nozzle. In the process of spraying high-flow-rate gas, the high-flow-rate gas passes through the first air guide port or the second air guide port, so that a large amount of air is sucked into the wide end of the trumpet mouth and enters the outer ring air inlet or the inner ring air inlet, so that the gas is premixed in the outer ring ejector pipe or the inner ring ejector pipe, the mixing efficiency of the premixed gas is improved, and the first air guide port and the second air guide port can further reduce the weight of the igniter, so that the burner is more portable.

[0010] Further, the lower end of the igniter body is provided with a protruding positioning support foot, the base is provided with a positioning groove corresponding to the positioning support foot, and the base is further provided with an induction needle mounting seat, the induction needle mounting seat is located below the outer air ring groove and the inner air ring groove.

[0011] After the above further structure, the igniter body can be better positioned on the base, and the induction needle mounting seat can be used to install the induction needle or the ignition needle, so that the induction needle or the ignition needle is placed in the air supplement space between the outer air ring groove and the inner air ring groove.

[0012] Further, the depth of the outer fire groove is greater than that of the first flame stabilizing groove, and the second flame stabilizing groove is arranged between the two adjacent inner fire grooves.

[0013] After the above further structure, after the first flame stabilizing groove and the second flame stabilizing groove output the premixed gas, the backflow can be performed through the shielding of the air cover, so that the combustion of the flame is more stable.

[0014] Further, the side of the inner ring convex wall close to the inner air ring groove is provided with a plurality of supporting blocks, and the side of the plurality of supporting blocks close to the inner air ring groove is provided with a limiting block, and the inner ring convex wall and the limiting block form a concave clamping groove, and the inner side edge of the air cover is positioned and clamped in the clamping groove.

[0015] After the above further structure, the air cover can be more accurately positioned on the outer air ring groove, so that the air cover can better protect the combustion flame of the premixed gas output by the outer fire groove and the first flame stabilizing groove, and the backflow of the premixed gas output by each first flame stabilizing groove can be more uniform, and the flame is more stable.

[0016] Further, the air cover is a cover body with a central hole, the inner air ring groove is located in the central hole, the lower side of the edge of the central hole is provided with a limiting ring, and the lower side of the edge of the cover body away from the central hole is provided with a water blocking ring, and the limiting ring and the water blocking ring form a covering groove, the covering groove is arranged on the upper surface of the outer ring convex wall and the inner ring convex wall, and the limiting ring and the water blocking ring form an overhanging section.

[0017] After the above further structure, the overhanging section formed can better prevent the flame from being extinguished by liquid when burning.

[0018] Further, the outer fire groove and the first flame stabilizing groove form a first gap with the inner side of the water blocking ring respectively, the longitudinal depth of the first flame stabilizing groove is located in the first gap, and the inner fire groove and the second flame stabilizing groove form a second gap with the inner side of the limiting ring respectively, and the longitudinal depth of the second flame stabilizing groove is located in the second gap.

[0019] After the above further structure, the premixed gas output by the first stable flame groove and the second stable flame groove flows back in the corresponding gap, so that the premixed gas continuously provides combustion at the flame root, thereby further stabilizing the flame, and under the action of the clamping groove formed by the inner ring convex wall and the limiting protrusion, the space of the first gap and the second gap is more stable, and the first stable flame groove and the second stable flame groove can be better protected from being blocked, and the first gap and the second gap are also prevented from being blocked, so that the flame stabilizing effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an explosion structure schematic diagram of the double-ring burner of the application.

[0021] Figure 2 It is a perspective structure schematic diagram of the double-ring burner of the application.

[0022] Figure 3 It is an enlarged structure schematic diagram of A in the figure. Figure 1

[0023] Figure 4 It is a side view structure schematic diagram of the double-ring burner of the application.

[0024] Figure 5 It is an enlarged structure schematic diagram of B in the figure. Figure 4

[0025] Figure 6 It is a perspective structure schematic diagram of the burner body.

[0026] Figure 7 It is a perspective structure schematic diagram of the burner body.

[0027] Figure 8 It is a perspective structure schematic diagram of the gas cover.

[0028] In the figure: base 1, burner 2, first gas pipe connecting port 3, second gas pipe connecting port 4, gas cover 5, burner body 6, outer gas ring groove 7, inner gas ring groove 8, outer ring ejection pipe 9, inner ring ejection pipe 10, outer ring gas outlet 11, inner ring gas outlet 12, outer ring convex wall 13, inner ring convex wall 14, outer fire groove 15, first stable flame groove 16, inner fire groove 17, supporting block 18, limiting protrusion 19, center fire cover 20, inner fire hole 21, positioning support foot 22, first nozzle seat 23, second nozzle seat 24, positioning groove 25, induction needle mounting seat 26, overhanging section 27, limiting ring 28, water blocking ring 29, covering groove 30, outer ring gas inlet 31, first air flow guide 32, second air flow guide 33, inner ring gas inlet 34. DETAILED DESCRIPTION

[0029] ​​The specific embodiments of the present application will be further described below with reference to the drawings. It should be noted that the description of these embodiments is intended to help understand the present application, but does not constitute a limitation of the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] In combination Figures 1 to 8 The double-ring burner shown in the figure comprises a base 1, a distributor 2 is positioned and installed on the base 1, the distributor 2 comprises a distributor body 6, an outer gas ring groove 7 and an inner gas ring groove 8 are arranged on the same center of the distributor body 6, the outer gas ring groove 7 is enclosed by an outer ring convex wall 13 and an inner ring convex wall 14, a plurality of outer fire grooves 15 are formed on the upper end surface of the outer ring convex wall 13 in the circumferential direction, a first flame stabilizing groove 16 is arranged between adjacent two outer fire grooves 15, a plurality of inner fire grooves 17 are formed on the upper end surface of the inner ring convex wall 14, the outer fire grooves 15, the first flame stabilizing groove 16 and the inner fire grooves 17 are all provided with upper openings, a gas cover 5 for shielding the upper openings is positioned and covered on the outer gas ring groove 7, a center fire cover 20 is covered on the inner gas ring groove 8, a plurality of inner fire holes 21 are arranged on the circumferential direction of the center fire cover 20; the outer gas ring groove 7 of the present embodiment can output premixed gas and burn through the outer fire grooves 15 and the inner fire grooves 17 at the same time, so that the double-ring burner has a three-ring flame effect under the condition of double-ring ignition, and the heating effect is better, and in the present embodiment, the outer fire grooves 15 and the first flame stabilizing groove 16 are directly arranged on the upper end surface of the outer gas ring groove 7, and then the gas cover 5 is directly covered, so that the upper openings of the outer fire grooves 15 and the first flame stabilizing groove 16 are covered, so that the premixed gas of the outer gas ring groove 7 can be directly output and burned from the outer fire grooves 15 and the first flame stabilizing groove 16, without the need to process the fire holes of the fire cover of the traditional large straight outer fire gas groove, the production efficiency is higher, the machining precision is reduced, the machining difficulty is reduced, and the production cost is reduced.

[0031] The outer ring injection pipe 9 is connected to one side of the inner ring convex wall 14 close to the inner air ring groove 8, and is provided with an outer ring air outlet 11 communicated with the outer air ring groove 7 at one end close to the inner air ring groove 8, and is provided with an outer ring air inlet 31 at the other end. The outer wall of the one end of the outer ring injection pipe 9 close to the outer ring air inlet 31 is connected to the lower end of the igniter body 6, and the middle outer wall of the outer ring injection pipe 9 is connected to the outer wall of the inner air ring groove 8. The lower end of the inner air ring groove 8 is connected to one end of the inner ring injection pipe 10, and the other end is connected to the lower end of the igniter body 6. The inner ring injection pipe 10 is provided with an inner ring air outlet 12 communicated with the inner air ring groove 8 at one end, and is provided with an inner ring air inlet 34 at the other end. The outer ring injection pipe 9 and the inner ring injection pipe 10 are vertically distributed in the bottom view. The inner air ring groove 8 is arranged at the center of the outer air ring groove 7 through the outer ring injection pipe 9 and the inner ring injection pipe 10, which effectively reduces the cost of material use, and the weight of the entire burner is lighter. At the same time, a larger air supplement space can be formed between the outer air ring groove 7 and the inner air ring groove 8, so that the combustion is more sufficient. The outer ring injection pipe 9 and the inner ring injection pipe 10 not only play a role in transporting premixed gas, but also support and connect the inner air ring groove 8.

[0032] The outer side of the outer ring air inlet 31 is provided with a first air guide port 32 located at the lower end of the igniter body 6, and the outer side of the inner ring air inlet 34 is provided with a second air guide port 33 located at the lower end of the igniter body 6. The side surface of the base 1 is respectively provided with a first gas pipe connecting port 3 and a second gas pipe connecting port 4. The first gas pipe connecting port 3 is provided with a first nozzle seat 23, and the side surface of the first nozzle seat 23 is provided with a first nozzle corresponding to the outer ring air inlet 31. The first nozzle is located in the first air guide port 32. The second gas pipe connecting port 4 is provided with a second nozzle seat 24, and the side surface of the second nozzle seat 24 is provided with a second nozzle corresponding to the inner ring air inlet 34. The second nozzle is located in the second air guide port 33. The first air guide port 32 and the second air guide port 33 are both in the shape of a trumpet mouth. The narrow end of the first air guide port 32 faces the outer ring air inlet 31, and the narrow end of the second air guide port 33 faces the inner ring air inlet 34. In the process of injecting high-flow-rate gas through the corresponding nozzle into the outer ring air inlet 31 or the inner ring air inlet 34, the high-flow-rate gas passes through the first air guide port 32 or the second air guide port 33, so that a large amount of air is sucked into the wide end of the trumpet mouth and enters the outer ring air inlet 31 or the inner ring air inlet 34, so that the gas is premixed in the outer ring injection pipe 9 or the inner ring injection pipe 10, improving the mixing efficiency of the premixed gas. Moreover, the first air guide port 32 and the second air guide port 33 can further reduce the weight of the igniter 6, so that the burner is more portable.

[0033] It is worth mentioning that the lower end of the igniter body 6 of the embodiment is provided with a raised positioning support foot 22, the base 1 is provided with a positioning groove 25 corresponding to the positioning support foot 22, and the base 1 is further provided with an induction needle mounting seat 26 located below the outer air ring groove 7 and the inner air ring groove 8; the induction needle mounting seat 26 can be provided with two induction needles or ignition needles, so that the igniter body 6 can be better positioned on the base 1, and the induction needle or ignition needle is placed in the air supplement space between the outer air ring groove 7 and the inner air ring groove 8, so that the multiple inner fire holes 21 and the multiple inner fire grooves 17 in the circumferential direction of the center fire cover 20 can act on the induction needle or ignition needle.

[0034] It is also worth mentioning that the groove depth of the outer fire groove 15 of the embodiment is greater than the groove depth of the first flame stabilizing groove 16, and a second flame stabilizing groove is arranged between two adjacent inner fire grooves 17. The groove depth of the inner fire groove 17 is greater than the groove depth of the second flame stabilizing groove, so that after the first flame stabilizing groove 16 and the second flame stabilizing groove output the premixed gas, the premixed gas can flow back through the shielding of the air cover 5, thereby stabilizing the combustion of the flame.

[0035] Specifically, the inner ring convex wall 14 of the embodiment is provided with a plurality of support blocks 18 on one side close to the inner air ring groove 8, and the plurality of support blocks 18 are provided with a limiting protrusion 19 on one side close to the inner air ring groove 8. A recessed clamping groove is formed between the inner ring convex wall 14 and the limiting protrusion 19, and the inner side edge of the air cover 5 is positioned and clamped in the clamping groove; so that the air cover 5 can be more accurately positioned and placed on the outer air ring groove 7, so that the air cover 5 can better protect the combustion of the premixed gas output by the outer fire groove 15 and the first flame stabilizing groove 16, and at the same time, the backflow of the premixed gas output by each first flame stabilizing groove 16 can be more uniform, and the flame can be more stable.

[0036] Among them, the air cover 5 is a cover body with a central hole, the inner air ring groove 8 is located in the central hole, the lower side of the edge of the central hole is provided with a limiting ring 28, the lower side of the edge of the cover body away from the central hole is provided with a water blocking ring 29, and the limiting ring 28 and the water blocking ring 29 form a covering groove 30, the covering groove 30 covers the upper surfaces of the outer ring convex wall 13 and the inner ring convex wall 14, and the limiting ring 28 and the water blocking ring 29 form a cantilever section 27; the cantilever section 27 can better prevent the flame from being extinguished by liquid when burning.

[0037] The outer fire groove 15 and the first flame stabilizing groove 16 of the embodiment form a first gap with the inner side of the water retaining ring 29 respectively, the longitudinal depth of the first flame stabilizing groove 16 is located in the first gap, the inner fire groove 17 and the second flame stabilizing groove form a second gap with the inner side of the limiting ring 28 respectively, the longitudinal depth of the second flame stabilizing groove is located in the second gap; so that the premixed gas output by the first flame stabilizing groove 16 and the second flame stabilizing groove flows back in the corresponding gap, so that the premixed gas continuously provides combustion at the root of the flame, thereby further stabilizing the flame, and under the action of the clamping groove formed by the inner ring convex wall 14 and the limiting block 19, the space of the first gap and the second gap is more stable, and the first flame stabilizing groove 16 and the second flame stabilizing groove can be better protected from being blocked, and the first gap and the second gap also eliminate the situation of being blocked, so that the flame stabilizing effect is better.

[0038] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the application, and still fall within the protection scope of the application.

Claims

1. A dual-ring burner, comprising a base (1), wherein a flame distributor (2) is positioned and mounted on the base (1), characterized in that, The flame divider (2) includes a flame divider body (6). The flame divider body (6) is provided with an outer gas ring groove (7) and an inner gas ring groove (8) arranged in a circle. The outer gas ring groove (7) is formed by an outer ring convex wall (13) and an inner ring convex wall (14). Several outer flame grooves (15) are opened on the upper end face of the outer ring convex wall (13) along the circumferential direction. A first flame stabilizing groove (16) is provided between two adjacent outer flame grooves (15). Several inner flame grooves (17) are opened on the upper end face of the inner ring convex wall (14). The outer flame groove (15), the first flame stabilizing groove (16) and the inner flame groove (17) are all provided with an upper opening. The outer gas ring groove (7) is provided with a gas cover (5) for blocking the upper opening. The inner gas ring groove (8) is provided with a central flame cover (20). Several inner flame holes (21) are provided along the circumferential direction of the central flame cover (20). The inner ring protrusion (14) is connected to an outer ring ejector tube (9) on the side near the inner ring groove (8). The outer ring ejector tube (9) is provided with an outer ring outlet (11) connected to the outer ring groove (7) at one end near the inner ring groove (8), and an outer ring inlet (31) at the other end. The outer wall of the outer ring ejector tube (9) near the outer ring inlet (31) is connected to the lower end of the fire spreader body (6). The middle outer wall of the outer ring ejector tube (9) is connected to the outer wall of the inner ring groove (8). The lower end of the inner ring groove (8) is connected to one end of the inner ring ejector tube (10), and the other end is connected to the lower end of the fire spreader body (6). The inner ring ejector tube (10) is provided with an inner ring outlet (12) connected to the inner ring groove (8) at one end, and an inner ring inlet (34) at the other end. The outer ring air inlet (31) is provided with a first air guide port (32) located at the lower end of the burner body (6) on the outer side. The inner ring air inlet (34) is provided with a second air guide port (33) located at the lower end of the burner body (6) on the outer side. The base (1) is provided with a first gas pipe connection port (3) and a second gas pipe connection port (4) on the side. The first gas pipe connection port (3) is provided with a first nozzle seat (23). The side of the first nozzle seat (23) is provided with a first nozzle corresponding to the outer ring air inlet (31). The first nozzle is located inside the first air guide port (32). The second gas pipe connection port (4) is provided with a second nozzle seat (24). The side of the second nozzle seat (24) is provided with a second nozzle corresponding to the inner ring air inlet (34). The second nozzle is located inside the second air guide port (33). The first air guide port (32) and the second air guide port (33) are both funnel-shaped. The inner ring convex wall (14) is provided with a plurality of support blocks (18) on the side near the inner air ring groove (8), and the plurality of support blocks (18) are provided with limit protrusions (19) on the side near the inner air ring groove (8). A recessed groove is formed between the inner ring convex wall (14) and the limit protrusions (19), and the inner edge of the air cover (5) is positioned and engaged in the groove. The air cover (5) is a cover with a central hole. The inner air ring groove (8) is located inside the central hole. A limiting ring (28) is provided on the lower edge of the central hole. A water-blocking ring (29) is provided on the lower edge of the cover away from the central hole. A covering groove (30) is formed between the limiting ring (28) and the water-blocking ring (29). The covering groove (30) covers the upper surfaces of the outer ring convex wall (13) and the inner ring convex wall (14), so that the limiting ring (28) and the water-blocking ring (29) form a cantilever section (27).

2. The dual-ring burner according to claim 1, characterized in that, The lower end of the fire distributor body (6) is provided with a protruding positioning support foot (22), and the base (1) is provided with a positioning groove (25) corresponding to the positioning support foot (22). The base (1) is also provided with a sensing needle mounting seat (26), which is located below the outer gas ring groove (7) and the inner gas ring groove (8).

3. A dual-ring burner according to claim 1, characterized in that, The depth of the outer flame groove (15) is greater than the depth of the first flame stabilizing groove (16), and a second flame stabilizing groove is provided between two adjacent inner flame grooves (17), the depth of the inner flame groove (17) is greater than the depth of the second flame stabilizing groove.

4. A dual-ring burner according to claim 3, characterized in that, The outer fire groove (15) and the first flame stabilizing groove (16) respectively form a first gap with the inner side of the water baffle ring (29), and the depth of the first flame stabilizing groove (16) is located in the first gap. The inner fire groove (17) and the second flame stabilizing groove respectively form a second gap with the inner side of the limiting ring (28), and the depth of the second flame stabilizing groove is located in the second gap.

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