A fire distributor and burner thereof

Abstract

The present invention discloses a fire divider and a burner thereof. The fire divider includes a fire divider body, which includes: a central air cavity; an outer ring air cavity, two adjacent air inlets are provided at the bottom or inner ring wall of the outer ring air cavity; a groove, the groove extending upward and opening downward is integrally formed at the bottom of the outer ring air cavity, the upper end of the groove extends upward into the outer ring air cavity and is located between the two air inlets, and the radial inner side and radial outer side of the groove are respectively connected to the inner ring wall and the outer ring wall of the outer ring air cavity. The fire divider of the present invention improves thermal efficiency and heat load while ensuring that the burner has a small diameter and low manufacturing cost. In addition, by integrally forming the groove extending upward and opening downward in the fire divider body, the groove can not only serve to separate the outer ring air cavity and the two air inlets, but also serve to position and / or accommodate the inner ring air outlet seat on the base.

Description

Technical Field

[0001] The present invention relates to the technical field of stoves, in particular to a fire distributor and a burner thereof. Background Art

[0002] Top-draft burners are increasingly being used in gas stoves, integrated cooktops, and integrated cooking centers. However, due to structural limitations, the heat load is often lower than with bottom-draft burners. To achieve a higher heat load with a top-draft burner, the burner diameter must be increased, which increases costs and reduces thermal efficiency. Summary of the Invention

[0003] The present invention aims to solve, at least to a certain extent, one of the problems existing in the existing related technologies. To this end, the present invention proposes an ignition divider, which improves thermal efficiency and heat load while ensuring that the burner has a small diameter and low manufacturing cost. In addition, by integrally forming a groove extending upward and opening downward on the ignition divider body, the groove can not only serve to separate the outer ring air cavity and the two air inlets, but also serve to position and / or accommodate the inner ring air outlet seat on the base.

[0004] According to the above-mentioned fire distributor, it is realized by the following technical solutions:

[0005] A fire divider includes a fire divider body, which includes: a central air cavity; an outer ring air cavity, two adjacent air inlets are opened at the bottom or inner ring wall of the outer ring air cavity; an inner ring cavity is arranged between the central air cavity and the outer ring air cavity; a groove is integrally formed at the bottom of the outer ring air cavity and is provided with a groove extending upward and opening downward, the upper end of the groove extends upward into the outer ring air cavity and is located between the two air inlets, and the radial inner side and radial outer side of the groove are respectively connected to the inner ring wall and outer ring wall of the outer ring air cavity.

[0006] In some embodiments, the bottom surface of the outer ring air cavity includes an upper plane segment and two lower guide surfaces, each of the lower guide surfaces is an inclined surface or an arc-shaped surface with one side high and the other side low, and the lower side of each lower guide surface is connected to the groove, and the higher side is connected to the upper plane segment; the two air inlets are respectively opened on the lower side of the two lower guide surfaces, or the two air inlets are opened on the inner ring wall and are respectively arranged close to the lower side of the two lower guide surfaces.

[0007] In some embodiments, two secondary air channels for air to pass through are opened at the bottom of the inner annular cavity, and the two secondary air channels are respectively located on two opposite outer sides of the central air cavity, and each secondary air channel is connected to the inner annular cavity.

[0008] In some embodiments, a guide plate is further included, and two guide plates are provided in the outer ring air cavity, respectively located above the air outlet direction of the two air inlets, and one end of the two guide plates close to the groove is connected to the opposite sides of the upper end of the groove, or the two guide plates are connected at one end close to the groove and abut or connect to the top of the groove; a gap is left between the inner ring wall and the radial inner side of the guide plate for gas to pass through, and / or a plurality of through holes for gas to pass through are provided on the guide plate.

[0009] In some embodiments, the radial outer side of the guide plate is integrally formed with the outer ring wall, and the end of the guide plate close to the groove is integrally formed with the upper end of the side wall of the groove; or, two support parts are provided in the outer ring air cavity and are located on the opposite outer sides of the groove, the radial outer side of the guide plate abuts the outer ring wall of the outer ring air cavity, and the end of the guide plate away from the groove abuts or is connected to the support parts.

[0010] In some embodiments, an upper guide surface is provided on the bottom surface of the guide plate, and the upper guide surface is an inclined surface or an arc-shaped surface with one side close to the groove being lower and the other side being higher.

[0011] In some embodiments, an ejector tube assembly is also included, which includes: two outer ejector tubes, which are arranged in the same direction at the bottom of the ignition divider body and are respectively connected to the two air inlets; an inner ejector tube, which is arranged at the bottom of the ignition divider body and located between the two outer ejector tubes, the outlet of the inner ejector tube is connected to the central air cavity, and the inlet of the inner ejector tube faces the groove.

[0012] In some embodiments, the two air inlets are opened on the inner ring wall and are respectively arranged close to the groove, the two external ejection tubes are arranged horizontally in the same direction, and each external ejection tube is respectively fixedly connected to the bottom of the inner ring cavity and the inner ring wall.

[0013] In some embodiments, a lower dividing portion extending downward is fixedly provided at the bottom of the ignition divider body, and the lower dividing portion is located between the front sides of the inlets of the two outer ejection tubes.

[0014] In some embodiments, the inner ejector tube includes a vertical section and a transverse section, the vertical section vertically passes through the bottom center position of the central air cavity, the transverse section is fixed to the bottom of the ignition divider body and is located between the vertical section and the groove, and the central air cavity is connected to the transverse section through the vertical section.

[0015] In some embodiments, a first positioning column and at least two second positioning columns extending downward are fixedly provided at the bottom of the fire divider body, the first positioning column is located in the groove, and the two second positioning columns are located on the side of the bottom of the fire divider body away from the groove.

[0016] According to the burner provided above, it is realized by the following technical solution:

[0017] A burner, comprising: an ignition divider as described above, the ignition divider comprising an ignition divider body and an ejector tube assembly, the ejector tube assembly comprising an inner ejector tube and two outer ejector tubes fixedly mounted at the bottom of the ignition divider body; a base, arranged below the ignition divider, the base being provided with an outer ring air duct and an inner ring air duct, the outer ring air duct being respectively connected to the inlets of the two outer ejector tubes, the inner ring air duct being connected to the inlet of the inner ejector tube, an air supply gap being formed between the base and the ignition divider, the gap being connected to the secondary air channel of the ignition divider.

[0018] In some embodiments, the inner ring air duct includes an inner ring air inlet pipe and an inner ring air outlet seat, the inner ring air outlet seat is vertically fixed to the top of the base and is located directly below the groove, the inner ring air inlet pipe is transversely fixed to the bottom of the base, and the inner ring air inlet pipe is connected to the inlet of the inner ejection pipe through the inner ring air outlet seat; the outer ring air duct includes an outer ring air inlet seat and two outer ring air outlet seats arranged in the same direction and vertically, the two outer ring air outlet seats are fixed on the side of the top of the base away from the inner ring air outlet seat, the outer ring air inlet seat is fixed to the bottom of the base, and the outer ring air inlet seat is respectively connected to the inlets of the two outer ejection pipes through the two outer ring air outlet seats.

[0019] In some embodiments, positioning structures are provided between the ignition distributor body and the top of the outer ring air duct and the top of the inner ring air duct, respectively.

[0020] In some embodiments, the positioning structure includes a protrusion and a positioning groove that are matingly plugged in, and the protrusion extending upward is fixed on the top of the outer ring air outlet seat of the outer ring air duct and the top of the inner ring air outlet seat of the inner ring air duct, respectively, and the positioning groove opening downward is provided on the positioning column at the bottom of the ignition divider body; or, the positioning groove opening upward is provided on the top of the outer ring air outlet seat of the outer ring air duct and the top of the inner ring air outlet seat of the inner ring air duct, respectively, and the positioning column at the bottom of the ignition divider body constitutes the protrusion.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] 1. The top-inlet burner of the present invention has two adjacent air inlets formed in the bottom or inner wall of the outer ring air cavity. Two outer ejector tubes are disposed in the same direction at the bottom of the ignition divider and connect the two air inlets respectively. The central air cavity of the ignition divider is connected to the inner ejector tube disposed between the two outer ejector tubes. This increases the unit air intake area of the outer ring air cavity and improves the heat load of the burner while ensuring a small burner diameter and low manufacturing cost.

[0023] 2. A groove extending upward and opening downward is integrally formed at the bottom of the outer ring air cavity of the ignition divider body. The groove serves as an upper partition to separate the outer ring air cavity from the two air inlets, thereby isolating the mixed gases flowing out of the two air inlets and ensuring that the mixed gases flowing out of the two air inlets do not interfere with each other. In addition, the groove can also serve as a positioning function with the base on the burner and / or accommodate the inner ring air outlet seat on the base;

[0024] 3. By arranging the two outer ejection tubes horizontally in the same direction, each outer ejection tube is fixedly connected to the bottom and the inner ring wall of the inner ring cavity, so that the two outer ejection tubes are arranged on the radial inner side of the inner ring wall. Compared with fixing the two outer ejection tubes horizontally at the bottom of the outer ring air cavity, the vertical thickness of the ignition device and the outer ejection tube after being connected as one can be made thinner, thereby reducing the space occupied in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the fire distributor in Example 1 of the present invention;

[0026] Figure 2 This is a second schematic diagram of the structure of the fire distributor in Example 1 of the present invention;

[0027] Figure 3 is a horizontal cross-sectional view of the fire distributor in Example 1 of the present invention;

[0028] Figure 4 It is a cross-sectional view of the vertical direction of the fire distributor in Example 1 of the present invention. Figure 1 ;

[0029] Figure 5 It is a cross-sectional view of the firearm in the vertical direction of embodiment 1 of the present invention. Figure 2 ;

[0030] Figure 6 is an exploded view of the burner in Example 2 of the present invention;

[0031] Figure 7 Schematic diagram of the structure of the burner in Example 2 of the present invention;

[0032] Figure 8 is a cross-sectional view of a burner in Example 2 of the present invention;

[0033] Figure 9This is a schematic diagram of the structure of the base in Example 2 of the present invention. Figure 1 ;

[0034] Figure 10 This is a schematic diagram of the structure of the base in Example 2 of the present invention. Figure 2 .

[0035] In the figure: 1-fire divider, 11-central air cavity, 12-outer ring air cavity, 1201-inner ring wall, 1202-outer ring wall, 121-air inlet, 122-upper partition, 123-upper plane section, 124-lower guide surface, 125-lower plane section, 13-inner ring cavity, 131-secondary air channel, 132-mounting port, 14-lower partition, 15-gap, 17-groove, 181-first positioning column, 182-second positioning column; 21-inner ejector tube, 211-vertical section, 212-transverse section, 22-outer ejector tube, 221-intake receiver Contraction section, 222-straight pipe section, 223-diffusion section; 31-external fire cover, 311-external air mixing chamber, 312-external fire hole, 313-cut groove, 314-decoration part, 32-inner fire cover, 321-inner air mixing chamber, 322-inner fire hole; 4-guide plate; 5-base, 51-spacing, 521-outer ring air inlet seat, 522-outer ring air outlet seat, 523-outer ring nozzle, 531-inner ring air inlet pipe, 532-inner ring air outlet seat, 533-inner ring nozzle, 54-fixing seat, 541-assembly hole; 61-raised part, 62-positioning groove; 7-ignition assembly. DETAILED DESCRIPTION

[0036] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacements of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed in the present invention.

[0037] Example 1

[0038] refer to Figure 1-3 This embodiment provides a flame divider for a burner. The flame divider includes a flame divider body 1, wherein the flame divider body 1 includes a central air cavity 11, an outer ring air cavity 12, and an inner ring cavity 13. The central air cavity 11 is located at the center of the flame divider body 1, and the inner ring cavity 13 is located between the central air cavity 11 and the outer ring air cavity 12. Two adjacent air inlets 121 are provided at the bottom or inner ring wall 1201 of the outer ring air cavity 12 to increase the unit air intake area of the outer ring air cavity 12. While ensuring a small burner diameter, this improves the thermal efficiency and heat load of the burner's outer ring fire.

[0039] The ignition divider body 1 also includes a groove 17, which is integrally formed at the bottom of the outer ring air cavity 12 and is recessed upward and open downward. The upper end of the groove 17 extends upward into the outer ring air cavity 12 and is located between the two air inlets 121. The radial inner side and radial outer side of the groove 17 are respectively connected to the inner ring wall 1201 and the outer ring wall 1202 of the outer ring air cavity 12, so as to separate the outer ring air cavity 12 from the two air inlets 121. It can be seen that the groove 17, as an upper partition 122, can play the role of separating the outer ring air cavity 12 and the two air inlets 121, thereby isolating the mixed gas flowing out of the two air inlets 121 and ensuring that the mixed gas flowing out of the two air inlets 121 does not interfere with each other. In addition, the groove 17 can also play a positioning role with the base on the burner and / or accommodate the inner ring air outlet seat on the base.

[0040] refer to Figure 3 The bottom surface of the outer ring air cavity 12 includes an upper planar section 123 and two lower guide surfaces 124. Each lower guide surface 124 is an inclined or curved surface with one side higher and the other lower. The lower side of each lower guide surface 124 is connected to the groove 17, and the higher side is connected to the upper planar section 123. In this embodiment, the two air inlets 121 are located on the inner ring wall 1201 near the lower sides of the two lower guide surfaces 124, ensuring that the two air inlets 121 are respectively arranged near the lower sides of the two lower guide surfaces 124. In other embodiments, the two air inlets 121 can be respectively located on the lower sides of the two lower guide surfaces 124. Therefore, by setting the lower guide surface 124 and designing the air inlet 121 to be arranged close to the lower side of the lower guide surface 124, after the mixture of gas and air flows out from the two air inlets 121, the mixture can, on the one hand, move smoothly upward along the lower guide surface 124 and flow to the upper plane section 123, so that the outer ring air cavity 12 is quickly filled with the mixture. In this process, it is beneficial for the gas and air to mix more evenly and the combustion to be more complete; on the other hand, the mixture can move smoothly upward along the lower guide surface 124 and flow to the outer fire cover 31, which is beneficial to the high outer fire cover 31 outgassing efficiency.

[0041] In this embodiment, the bottom surface of the outer ring air cavity 12 also includes a lower planar section 125 that is lower than the upper planar section 123. The lower sides of the two lower guide surfaces 124 are connected by the lower planar section 125. The groove 17 is integrally formed on the lower planar section 125 and divides the lower planar section 125 into two left and right sections spaced apart along the circumferential direction. The two air inlets 121 are provided in the inner ring wall 1201, respectively located above the left and right sections. In other embodiments, the lower planar section 125 may be omitted.

[0042] refer to Figure 1Two secondary air channels 131 for air to pass through are provided at the bottom of the inner ring cavity 13. The two secondary air channels 131 are respectively located on the opposite outer sides of the central air cavity 11. Each secondary air channel 131 is connected to the inner ring cavity 13. In this way, the two secondary air channels 131 can provide the secondary air required for combustion to the radial outer side of the inner ring fire and the radial inner side of the outer ring fire of the burner. At the same time, the unit ventilation area of the secondary air is increased, so that the combustion is more complete, the combustion thermal efficiency is improved, and the CO content in the flue gas is reduced.

[0043] Optionally, each secondary air channel 131 is preferably an arc-shaped vent, which is arranged along the circumferential direction of the inner ring cavity 13, and the length of the arc-shaped vent in the circumferential direction is greater than one-fourth and less than one-half of the circumference of the bottom of the inner ring cavity 13, so as to ensure that the burner has a larger secondary air unit area. In addition, a mounting port 132 for the ignition assembly 7 to pass through is provided at the bottom of the inner ring cavity 13. The mounting port 132 is arranged between the two outer ejection tubes 22 and away from the groove 17 to prevent the installation of the ignition assembly 7 from interfering with the burner.

[0044] refer to Figure 1 and Figure 3 The flame divider also includes two guide plates 4, positioned within the outer ring air cavity 12, located above the two air inlets 121 in the direction of gas discharge. The ends of the two guide plates 4, which are located near the groove 17, are connected to opposite sides of the upper end of the groove 17, or are connected to each other and abut or connect to the top of the groove 17. A gap 15 is provided between the inner ring wall 1201 and the radially inner side of the guide plates 4 for gas to pass through. During burner operation, the mixed gas flowing out of the air inlet 121, under the action of the guide plates 4, moves a portion of the mixed gas smoothly upward along the lower guide surface 124. This not only quickly fills the entire outer ring air cavity 12 with the mixed gas, but also ensures more uniform mixing of the gas and air flowing into the outer ring air cavity 12, resulting in more uniform and complete combustion. The remaining mixed gas flows upward through the gap 15 toward the outer ring cover 31, improving the gas discharge efficiency of the outer fire holes 312 in the outer ring cover 31.

[0045] In this embodiment, the radially outer side of the deflector 4 is integrally formed with the outer annular wall 1202, and the end of the deflector 4 proximal to the groove 17 is integrally formed with the upper end of the sidewall of the groove 17, thereby integrally connecting the deflector 4 to the fire divider body 1 and facilitating integral casting. In other embodiments, the deflector 4 and the fire divider body 1 can be designed as separate structures. In this case, two support portions are fixedly provided within the outer annular air cavity 12, located on opposite sides of the groove 17. During installation, the radially outer side of the deflector 4 abuts the outer annular wall 1202 of the outer annular air cavity 12, leaving a gap 15 between the radially inner side and the inner annular wall 1201. One end of the deflector 4 is connected to the upper end or top of the sidewall of the groove 17, while the other end abuts or is connected to the support portion. Of course, two deflectors 4 can also be connected at their ends proximal to the groove 17. When the two deflectors 4 are fixedly connected as a whole, they are located at the top of the groove 17 and abut or are connected to the groove 17.

[0046] It is particularly noted that, in order to achieve a combing effect and increase the amount of mixed gas flowing upward, the guide plate 4 may be provided with multiple through holes for gas to pass through, with the multiple through holes being spaced apart along the circumferential length of the guide plate 4. Of course, it is also possible to design the multiple through holes in the guide plate 4 to replace the gap 15 between the inner annular wall 1201 and the guide plate 4.

[0047] In addition, in order to improve the guiding effect of the guide plate 4 on the mixed gas, an upper guide surface (not shown in the figure) can be set on the bottom surface of the guide plate 4. The upper guide surface 42 is an inclined surface or an arc surface that is inclined or curved upward from the groove 17 to the upper plane section 123.

[0048] refer to Figure 2 The ignition divider also includes an ejector tube assembly (not shown in the figure), which includes two outer ejector tubes 22 and an inner ejector tube 21. The two outer ejector tubes 22 are arranged in the same direction at the bottom of the ignition divider body 1 and are respectively connected to the two air inlets 121. The inner ejector tube 21 is arranged at the bottom of the ignition divider body 1 and is located between the two outer ejector tubes 22. The outlet of the inner ejector tube 21 is connected to the central air cavity 11, and the inlet of the inner ejector tube 21 faces the groove 17. Therefore, by facing the inlet of the inner ejector tube 21 toward the groove 17, it is convenient to utilize the space of the groove 17 to accommodate the function of the inner ring air outlet seat 532 on the base 5, so that the inlet of the inner ejector tube 21 and the inner ring air outlet seat 532 are connected and connected through the inner ring nozzle 523. Figure 8 .

[0049] In this embodiment, the inner ejector tube 21 and the two outer ejector tubes 22 are integrally formed with the ignition divider body 1 using a casting process, so that the ignition divider body 1 and the ejector tube assembly are connected as one, which is convenient for rapid processing and molding, while ensuring the air tightness of the connection between the ejector tube and the ignition divider body 1.

[0050] refer to Figure 2-3Two air inlets 121 are provided on the inner annular wall 1201 and are arranged near the groove 122. Two external ejection tubes 22 are arranged horizontally and in the same direction. Each external ejection tube 22 is fixedly connected to the bottom of the inner annular cavity 13 and the inner annular wall 1201, respectively. In this way, both external ejection tubes 22 are arranged radially inward of the inner annular wall 1201. Compared to fixing the two external ejection tubes 22 horizontally to the bottom of the outer annular cavity 12, this embodiment fixes each external ejection tube 22 horizontally to the bottom of the inner annular cavity 13 and is located radially inward of the inner annular wall 1201. This makes the vertical thickness of the fire distributor body 1 and the external ejection tubes 22 thinner after they are connected as a whole, reducing the vertical space occupied.

[0051] Since the two outer ejection tubes 22 are arranged horizontally and in the same direction, the distance between them is small, and they are easy to interfere with each other when ejecting the primary air. In this embodiment, in order to prevent the primary air of the two outer ejection tubes 22 from interfering with each other, the primary air ejection amount of each ejection tube 22 is increased, referring to Figure 2 A downwardly extending lower divider 14 is fixedly provided at the bottom of the ignition divider body 1. Lower divider 14 is located between the front air intakes of the two external ejector tubes 22 and is integrally cast with the ignition divider body 1. Thus, lower divider 14 serves to separate the primary air from the two external ejector tubes, preventing interference between the primary air from the two tubes. In other embodiments, lower divider 14 may be omitted.

[0052] In this embodiment, both external ejection tubes 22 are throat tubes. Figure 4 The throat pipe includes an air intake contraction section 221, a straight pipe section 222, and a diffuser section 223 connected in sequence. One end of the straight pipe section 222 is connected to the air intake contraction section 221, and the other end is connected to the corresponding air inlet 121 through the diffuser section 223. In other embodiments, both external ejection pipes 22 can be designed as straight pipes. Of course, it is also possible to design one external ejection pipe 22 as a straight pipe and the other external ejection pipe 22 as a throat pipe. When the external ejection pipe 22 is a straight pipe, the straight pipe includes an air intake contraction section 221 and a straight pipe section 222 connected in sequence. The air intake contraction section 221 is connected to the corresponding air inlet 121 through the straight pipe section 222.

[0053] refer to Figure 5 The inner ejector tube 21 includes a vertical section 211 and a transverse section 212. The vertical section 211 vertically penetrates the bottom center of the central air cavity 11, and the upper end of the vertical section 211 extends upward into the central air cavity 11 and is interconnected. The transverse section 212 is fixed to the bottom of the ignition distributor body 1 and is located between the vertical section 211 and the groove 17. The air outlet end of the transverse section 212 is connected to the lower end of the vertical section 211, and the air inlet end of the transverse section 212 faces the groove 17, so that the space in the groove 17 is suitable for assembling the inner ring air outlet seat 532 and the inner ring nozzle 523. Optionally, the vertical section 211 is a straight tube, and the transverse section is a straight tube or a throat.

[0054] refer to Figure 2 The fire dispenser body 1 further includes a first positioning post 181 and at least two second positioning posts 182. The first positioning post 181 is located within the groove 17, with its upper end fixedly connected to the top surface of the groove 17 and its lower end extending downward. The two second positioning posts 182 are fixedly disposed on the side of the bottom of the fire dispenser body 1 away from the groove 17. Thus, by fixing the downwardly extending first positioning post 181 within the groove 17, the space in the groove 17 is fully utilized. The groove 17 cooperates with the first positioning post 181, allowing the groove 17 to position and limit the installation of the fire dispenser.

[0055] Example 2

[0056] refer to Figure 6-8 This embodiment provides a burner, which includes a base 5 and an ignition divider as described in Example 1. The ignition divider includes an ignition divider body 1 and an ejector tube assembly, and the ejector tube assembly includes an inner ejector tube 21 and two outer ejector tubes 22 fixed to the bottom of the ignition divider body 1. The base 5 is arranged below the ignition divider, and an outer ring air duct (not shown in the figure) and an inner ring air duct (not shown in the figure) are provided on the base 5. The outer ring air duct is respectively connected to the inlets of the two outer ejector tubes 22, and the inner ring air duct is connected to the inlet of the inner ejector tube 21. An air supply gap 51 is formed between the base 5 and the ignition divider, and the gap 51 is connected to the secondary air channel 131 of the ignition divider.

[0057] Therefore, by arranging a base 5 under the ignition divider, it is convenient to firmly and securely place the ignition divider in the stove shell, and by the distance 51 between the base 5 and the ignition divider, it is possible to provide secondary air to the secondary air channel 131 while reducing the contact area between the ignition divider and the base 5, which is conducive to reducing the heat loss transmitted downward by the ignition divider.

[0058] refer to Figure 8-10 The inner ring air passage includes an inner ring air inlet pipe 531, an inner ring air outlet seat 532, and an inner ring nozzle 533. The inner ring air inlet pipe 531 is fixed horizontally to the bottom of the base 5 and connected to the inner ring air source. The inner ring air outlet seat 532 is fixed vertically to the top of the base 5 and is located directly below the groove 17. The lower end of the inner ring air outlet seat 532 is connected to the inner ring air inlet pipe 531, and the upper end is connected to the inlet of the inner ejector pipe 21 through the inner ring nozzle 533.

[0059] The outer ring air passage comprises an outer ring air inlet seat 521, two outer ring air outlet seats 522 arranged in the same direction and vertically, and two outer ring nozzles 523. The two outer ring air outlet seats 522 are fixed to the top of the base 5, away from the inner ring air outlet seat 532. The outer ring air inlet seat 521 is fixed to the bottom of the base 5, and the lower ends of the two outer ring air outlet seats 522 are connected to the outer ring air source. The two outer ring air outlet seats 522 are connected to the inlets of the two outer ejector tubes 22 through the two outer ring nozzles 523.

[0060] In this embodiment, the tops of the two outer ring air outlet seats 522 and the tops of the inner ring air outlet seats 532 respectively abut or connect to the ignition divider body 1, so as to achieve a stable and reliable support role for the ignition divider body 1 through the cooperation of the two outer ring air outlet seats 522 and the inner ring air outlet seat 532, and form a gap 51 between the base 5 and the ignition divider for air to pass through.

[0061] refer to Figure 8-9 The burner also includes a plurality of positioning structures (not shown in the figure), and positioning structures are respectively provided between the igniter body 1 and the top of the outer ring air duct and the top of the inner ring air duct. In this embodiment, the positioning structure includes a protrusion 61 and a positioning groove 62 that are plugged in and matched with each other. The protrusions 61 extending upward are respectively fixed on the top of the two outer ring air outlet seats 522 and the top of the inner ring air outlet seat 532. The positioning grooves 62 opening downward are provided on the positioning posts at the bottom of the igniter body 1, that is, the positioning grooves 62 opening downward are respectively provided on the first positioning post 181 and the two second positioning posts 182. Figure 2 .

[0062] During installation, the upper end of the inner ring air outlet seat 532 is inserted into the groove 17, and the raised portion 61 on the top of the inner ring air outlet seat 532 is matched and plugged with the positioning groove 62 on the first positioning column 181. It can be seen that the groove 17 can not only accommodate the inner ring air outlet seat 532, but also, through the first positioning column 181 in the groove 17 and the raised portion 61 of the base 5, the groove 17 can also play a role in positioning and limiting the installation of the fire divider. The raised portions 61 on the tops of the two outer ring air outlet seats 522 are matched and plugged with the positioning grooves 62 on the two second positioning columns 182. Thus, through the cooperation of the three positioning structures, the fire divider is stably and reliably installed on the base 5 to prevent displacement in the circumferential direction.

[0063] In other embodiments, the setting positions of the protrusions 61 and the positioning grooves 62 can be swapped, and upward-opening positioning grooves 62 are respectively provided at the top of the outer ring air outlet seat 522 and the top of the inner ring air outlet seat 532, and three downward-extending protrusions 61 are correspondingly provided at the bottom of the fire disperser body 1. The three protrusions 61 are composed of a first positioning column 181 and two second positioning columns 182 at the bottom of the fire disperser body 1.

[0064] refer to Figure 6-8 The burner also includes an ignition assembly 7. A fixing seat 54 is provided at a position on the base 5 corresponding to the mounting opening 132. The fixing seat 54 is provided with an assembly hole 541 suitable for mounting the ignition assembly 7. The ignition assembly 7 is vertically inserted into the mounting opening 132, and its lower end is mated with the assembly hole 541 of the fixing seat 54. The upper end extends above the inner annular cavity 13 and is located between the inner and outer flame covers, and is used to ignite the gas flowing out of the inner flame cover 32. Of course, in addition to the ignition function, the ignition assembly 7 can also be integrated with a flameout protection function to detect whether the burner has flamed out.

[0065] refer to Figure 6-8 The burner further includes a fire cover assembly, which includes an outer fire cover 31 and an inner fire cover 32. The outer fire cover 31 is provided at the top opening of the outer ring air cavity 12, and the outer air mixing chamber 311 of the outer fire cover 31 is connected to the outer ring air cavity 12. The inner fire cover 32 is provided at the top opening of the central air cavity 11, and the inner air mixing chamber 321 of the inner fire cover 32 is connected to the central air cavity 11.

[0066] In this embodiment, multiple inner fire holes 322 are circumferentially provided on the outer wall of the inner fire cover 32, connecting to the inner air mixing chamber 321. When the mixed gas ignites and burns at the inner fire holes 322, an inner ring fire is formed. Multiple outer fire holes 313 are circumferentially provided on the outer wall of the outer fire cover 31, connecting to the outer air mixing chamber 311. When the mixed gas ignites and burns at the outer fire holes 313, an outer ring outer ring fire is formed. The secondary air supply for the outer ring outer ring fire is provided by air radially outward from the burner. Optionally, multiple slots 313 are circumferentially provided on the inner inner side of the top of the outer fire cover 31. Each slot 313 connects to the outer air mixing chamber 311. When the mixed gas ignites and burns at the slots 313, an inner ring outer ring fire is formed. The secondary air supply for the inner ring outer ring fire is provided by air flowing upward from the secondary air channel 131. Thus, the inner ring outer ring fire and the outer ring outer ring fire work together to heat the cookware more evenly.

[0067] In order to improve the appearance or decorative performance of the outer fire cover 31, an annular decorative part 314 is installed on the top of the outer fire cover 31. The decorative part 314 divides the top of the outer fire cover 31 into an inner and outer sides. All the grooves 31 are evenly distributed circumferentially on the inner side of the top of the outer fire cover 31, that is, all the grooves 31 are located radially inside the decorative part 314.

[0068] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A fire dispenser, characterized in that: The invention comprises a fire divider body (1), wherein the fire divider body (1) comprises: a central air cavity (11); an outer ring air cavity (12), wherein two adjacently arranged air inlets (121) are provided at the bottom or inner ring wall (1201) of the outer ring air cavity (12); an inner ring cavity (13), which is arranged between the central air cavity (11) and the outer ring air cavity (12); a groove (17), wherein the groove (17) extending upward and opening downward is integrally formed at the bottom of the outer ring air cavity (12), wherein the upper end of the groove (17) extends upward into the outer ring air cavity (12) and is located between the two air inlets (121), and the radial inner side and the radial outer side of the groove (17) are respectively connected to the inner ring wall (1201) and the outer ring wall (1202) of the outer ring air cavity (12), and the bottom surface of the outer ring air cavity (12) comprises an upper plane. The invention relates to a first embodiment of the present invention and a second embodiment of the present invention. The first embodiment comprises a first air inlet (121) and a second air inlet (121). The first embodiment comprises a first air inlet (121) and a second air inlet (121). The first embodiment comprises a second air inlet (121) and a second air inlet (121). The first embodiment comprises a second air inlet (121) and a second air inlet (121). The first embodiment comprises a second air inlet (121) and a second air inlet (121). The first embodiment comprises a first air inlet (121) and a second air inlet (121). The first embodiment comprises a second air inlet (121) and a second air inlet (121). The first embodiment comprises a second air inlet (121) and a second air inlet (121). The first embodiment comprises a second air inlet (121) and a second air inlet (121). The first embodiment comprises a second air inlet (121) and a second air inlet (121) respectively. ...

2. A fire distributor according to claim 1, characterized in that: The invention also includes a guide plate (4), wherein two guide plates (4) are provided in the outer ring air cavity (12), and are respectively located above the gas outlet direction of the two gas inlets (121); one end of the two guide plates (4) close to the groove (17) is respectively connected to the opposite sides of the upper end of the groove (17), or one end of the two guide plates (4) close to the groove (17) is connected and abuts or connects to the top of the groove (17); a gap (15) for gas to pass through is left between the inner ring wall (1201) and the radial inner side of the guide plate (4), and / or a plurality of through holes for gas to pass through are provided on the guide plate (4).

3. A fire distributor according to claim 2, characterized in that: The radial outer side of the guide plate (4) is integrally formed with the outer ring wall (1202), and the end of the guide plate (4) close to the groove (17) is integrally formed with the upper end of the side wall of the groove (17); or, two support portions are provided in the outer ring air cavity (12) and are located on two opposite outer sides of the groove (17), the radial outer side of the guide plate (4) abuts against the outer ring wall (1202) of the outer ring air cavity (12), and the end of the guide plate (4) away from the groove (17) abuts against or is connected to the support portions.

4. A fire distributor according to claim 2 or 3, characterized in that: An upper guide surface is provided on the bottom surface of the guide plate (4), and the upper guide surface is an inclined surface or an arc-shaped surface with one side close to the groove (17) being lower and the other side being higher.

5. The ignition distributor according to claim 1, characterized in that: The invention also includes an ejector tube assembly, which includes: two outer ejector tubes (22) arranged in the same direction at the bottom of the ignition divider body (1) and connected to the two air inlets (121) respectively; an inner ejector tube (21) arranged at the bottom of the ignition divider body (1) and located between the two outer ejector tubes (22), the outlet of the inner ejector tube (21) being connected to the central air cavity (11), and the inlet of the inner ejector tube (21) facing the groove (17).

6. The ignition distributor according to claim 5, characterized in that: The two air inlets (121) are opened on the inner ring wall (1201) and are respectively arranged close to the groove (17); the two outer ejection tubes (22) are arranged horizontally in the same direction; each outer ejection tube (22) is respectively fixedly connected to the bottom of the inner ring cavity (13) and the inner ring wall (1201).

7. A fire distributor according to claim 5 or 6, characterized in that: A lower dividing portion (14) extending downward is fixedly provided at the bottom of the ignition distributor body (1), and the lower dividing portion (14) is located between the front sides of the inlets of the two outer ejection tubes (22).

8. The ignition distributor according to claim 5, characterized in that: The inner ejector tube (21) includes a vertical section (211) and a transverse section (212), wherein the vertical section (211) vertically passes through the bottom center position of the central air cavity (11), and the transverse section (212) is fixed to the bottom of the ignition distributor body (1) and is located between the vertical section (211) and the groove (17), and the central air cavity (11) is connected to the transverse section (212) through the vertical section (211).

9. The ignition distributor according to claim 1, characterized in that: A first positioning column (181) and at least two second positioning columns (182) extending downward are fixedly provided at the bottom of the fire divider body (1), wherein the first positioning column (181) is located in the groove (17), and the two second positioning columns (182) are located on a side of the bottom of the fire divider body (1) away from the groove (17).

10. Burner, characterized in that The invention comprises an ignition divider as described in any one of claims 1 to 9, wherein the ignition divider comprises an ignition divider body (1) and an ejector tube assembly, wherein the ejector tube assembly comprises an inner ejector tube (21) and two outer ejector tubes (22) fixedly arranged at the bottom of the ignition divider body (1); a base (5) is arranged below the ignition divider, and the base (5) is provided with an outer ring air duct and an inner ring air duct, wherein the outer ring air duct is respectively connected to the inlets of the two outer ejector tubes (22), and the inner ring air duct is connected to the inlet of the inner ejector tube (21), and an air supply spacing (51) is formed between the base (5) and the ignition divider, and the spacing (51) is connected to the secondary air channel (131) of the ignition divider.

11. The burner according to claim 10, characterized in that The inner ring air channel comprises an inner ring air inlet pipe (531) and an inner ring air outlet seat (532), wherein the inner ring air outlet seat (532) is vertically fixed on the top of the base (5) and is located directly below the groove (17), and the inner ring air inlet pipe (531) is horizontally fixed on the bottom of the base (5), and the inner ring air inlet pipe (531) is connected to the inlet of the inner ejector pipe (21) through the inner ring air outlet seat (532); the outer ring air channel comprises An outer ring air inlet seat (521) and two outer ring air outlet seats (522) arranged in the same direction and vertically, the two outer ring air outlet seats (522) are fixed on the top of the base (5) on one side away from the inner ring air outlet seat (532), the outer ring air inlet seat (521) is fixed on the bottom of the base (5), and the outer ring air inlet seat (521) is connected to the inlets of the two outer ejection tubes (22) through the two outer ring air outlet seats (522).

12. The burner according to claim 10 or 11, characterized in that Positioning structures are respectively provided between the ignition distributor body (1) and the top of the outer ring air passage and the top of the inner ring air passage.

13. The burner according to claim 12, characterized in that The positioning structure includes a protrusion (61) and a positioning groove (62) that are matched and plugged in with each other. The protrusion (61) extending upward is fixed on the top of the outer ring air outlet seat (522) of the outer ring air channel and the top of the inner ring air outlet seat (532) of the inner ring air channel, and the positioning groove (62) opening downward is provided on the positioning column at the bottom of the ignition divider body (1); or, the positioning groove (62) opening upward is provided on the top of the outer ring air outlet seat (522) of the outer ring air channel and the top of the inner ring air outlet seat (532) of the inner ring air channel, and the positioning column at the bottom of the ignition divider body (1) constitutes the protrusion (61).

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