Distributor assembly and upper air inlet burner thereof

Abstract

The distributor assembly comprises a distributor, the distributor is provided with an air cavity, an outer ring air cavity and an inner ring air cavity, the air cavity, the outer ring air cavity and the inner ring air cavity are coaxially arranged, and the air cavity is located between the outer ring air cavity and the inner ring air cavity. An outer injection pipe and an inner injection pipe which are parallel and arranged in the same direction are arranged at the bottom of the fire distributor, an outlet of the outer injection pipe is communicated with the outer ring air cavity, an outlet of the inner injection pipe is communicated with the inner ring air cavity, an annular check ring extending downwards is arranged at the bottom of the air cavity, and the annular check ring is communicated with the outer ring air cavity. A channel located on the radial outer side of the annular check ring is formed in the outer cavity wall face or the cavity bottom face of the air cavity. According to the distributor assembly, secondary air and overflowing liquid are guided, and meanwhile the problem that the distributor assembly is pressed and shakes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a fire distributor component and an upper air inlet burner thereof. Background Art

[0002] In order to solve the problem of easy nozzle clogging, most of the upper air inlet burners currently on the market adopt an external ejector, with the corresponding nozzle seat exposed on the stove panel and the nozzle arranged horizontally. In order to solve the problem of short ejector of the ignition divider assembly, low ejection coefficient, and poor combustion conditions of the upper air inlet burner, a multi-ejector design is usually adopted, with more than 3 inner and outer ring ejectors and more than 3 corresponding exposed nozzle seats. However, the nozzle seat is exposed too much on the stove panel, and the nozzle seats are arranged relatively to each other, so users are prone to cleaning dead corners when cleaning the stove panel, which is not conducive to cleaning the stove panel.

[0003] In addition, the existing fire divider is generally installed on the top of the base assembly through the cooperation of the positioning column and the positioning groove. The fire divider has poor installation balance and may shake when pressed. Summary of the invention

[0004] The utility model aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the utility model proposes an ignition divider assembly, which can guide secondary air and overflow liquid while solving the problem of the ignition divider assembly shaking when pressed.

[0005] According to the above-mentioned fire distributor assembly, it is realized by the following technical solution:

[0006] A fire divider assembly includes a fire divider, the fire divider having a coaxially arranged air cavity, an outer ring air cavity and an inner ring air cavity, the air cavity being located between the outer ring air cavity and the inner ring air cavity, an outer ejector tube and an inner ejector tube being arranged in parallel and in the same direction at the bottom of the fire divider, the outlet of the outer ejector tube being connected to the outer ring air cavity, the outlet of the inner ejector tube being connected to the inner ring air cavity, an annular retaining ring extending downwardly being provided at the bottom of the air cavity, and a channel being located radially outside the annular retaining ring being opened on the outer cavity wall or cavity bottom surface of the air cavity.

[0007] In some embodiments, part or all of the inner ejector tube and the outer ejector tube are arranged in the annular retaining ring; and / or the distance between the outer ejector tube and the central axis of the ignition divider is 25 to 35 mm, and the distance between the inner ejector tube and the central axis of the ignition divider is 5 to 15 mm.

[0008] In some embodiments, the bottom surface of the air cavity is in the shape of a truncated cone with a larger lower end and a smaller upper end, and includes a planar section and an inclined section, wherein the planar section is fixedly connected between the peripheral wall of the inner ring air cavity and the upper end of the inclined section; the annular retaining ring is integrally formed and arranged at the bottom of the inclined section, and the channel is arranged at the lower end or radially outside of the inclined section.

[0009] In some embodiments, a plurality of notches spaced circumferentially are provided at the lower end of the annular retaining ring; and / or a mounting hole located radially inward of the annular retaining ring is opened on the bottom surface of the air cavity; and / or a clamping portion extending downward is integrally formed at the bottom of the ignition divider.

[0010] In some embodiments, the clamping portion is a downwardly opening slot located between the annular retaining ring and the mounting hole; or a slope or arcuate surface inclined or curved from top to bottom is formed at the bottom of the annular retaining ring, and the clamping portion is composed of the slope or arcuate surface.

[0011] In some embodiments, a central protrusion extending upward is integrally formed on the bottom surface of the inner ring air cavity, an annular cavity is formed between the central protrusion and the outer cavity wall surface of the inner ring air cavity, and the annular cavity is connected to the outlet of the inner ejector tube.

[0012] In some embodiments, a stopper is provided in the annular cavity and is arranged close to the outlet of the inner ejector tube. The stopper allows the inner ring gas flowing out of the inner ejector tube to flow into the annular cavity in the same direction.

[0013] In some embodiments, an air baffle is also included, which is arranged in the inner ring air cavity and located above the outlet of the inner ejector tube. One end of the air baffle is connected to the central protrusion, and the other end is abutted or clamped with the outer cavity wall of the inner ring air cavity.

[0014] In some embodiments, the air baffle plate includes a circular plate and an arc-shaped plate, the circular plate is installed on the top of the central protrusion, one end of the arc-shaped plate is integrally formed with the circular plate, and the other end is abutted or clamped with the outer cavity wall of the inner ring air cavity.

[0015] In some embodiments, a plurality of air holes are provided on the arc plate; and / or a limiting groove is recessed on one end of the arc plate away from the circular plate, and a positioning portion is convexly provided on the outer cavity wall of the inner ring air cavity at a position corresponding to the limiting groove, and the positioning portion is engaged with the limiting groove.

[0016] According to the above-mentioned upward air inlet burner, it is realized by the following technical solution:

[0017] A top air inlet burner, comprising: a base assembly, having a circular support platform and an air outlet seat, the air outlet seat being arranged outside the support platform and fixedly connected to the support platform, the air outlet seat comprising an outer ring air outlet seat and an inner ring air outlet seat arranged in parallel and in the same direction; and a flame divider assembly as described above, the flame divider being arranged on the top of the support platform, the bottom surface of the annular retaining ring abutting and fitting against the top surface of the support platform, the inlet of the outer ejector tube being connected to the outer ring air outlet seat, and the inlet of the inner ejector tube being connected to the inner ring air outlet seat.

[0018] For the upper air inlet burner, the diameter of the support platform is greater than or equal to the outer diameter of the annular retaining ring and smaller than the maximum outer diameter of the ignition distributor; and / or the outer ring air outlet seat and the inner ring air outlet seat are staggered and the distance between the two is greater than 35 mm.

[0019] An upper air inlet burner, wherein one end of the support platform close to the air outlet seat is integrally formed with two bosses extending outward and arranged side by side at intervals, and the two bosses are respectively integrally formed with the outer ring air outlet seat and the inner ring air outlet seat; and / or a plurality of supporting feet and a connecting arm extending downward are integrally formed at the bottom of the support platform, and the opposite ends of the connecting arm are respectively integrally formed with the lower end of the outer ring air duct and the lower end of the inner ring air duct, and a supporting portion is provided at the bottom or the lower end of the outer side wall of the connecting arm.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] 1. The fire distributor assembly of the utility model is provided with an annular retaining ring at the bottom of the air cavity of the fire distributor, and the annular retaining ring can contact with the top surface of the support platform of the base assembly, so that the fire distributor assembly can be kept level after installation, and the fire distributor assembly can be prevented from shaking due to pressing, and at the same time, the fire distributor ejector is positioned to ensure the concentricity of the ejector of the fire distributor and the nozzle of the base assembly;

[0022] 2. By setting a channel radially outside the annular retaining ring on the outer cavity wall or cavity bottom of the air cavity of the ignition divider, the secondary air can flow upward along the annular retaining ring into the channel, thereby replenishing the air cavity with secondary air. At the same time, after the overflow liquid in the air cavity is discharged from the channel, it can flow into the liquid receiving tray along the annular retaining ring. It can be seen that the annular retaining ring can guide the secondary air and overflow liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an exploded view of the fire distributor assembly in the embodiment of the utility model;

[0024] Figure 2 is a cross-sectional view of a fire distributor assembly in an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the fire distributor in the embodiment of the utility model. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the structure of the fire distributor in the embodiment of the utility model. Figure 2 ;

[0027] Figure 5 This is an exploded view of an upper air inlet burner in an embodiment of the utility model;

[0028] Figure 6 This is a cross-sectional view of the upper air inlet burner in the embodiment of the utility model. Figure 1 ;

[0029] Figure 7 This is a cross-sectional view of the upper air inlet burner in the embodiment of the utility model. Figure 2 ;

[0030] Figure 8 It is a structural schematic diagram of the base assembly in the embodiment of the utility model;

[0031] Fig. 9 It is a structural schematic diagram of the base body in the embodiment of the utility model;

[0032] Fig.10 It is a cross-sectional view of the base assembly in the embodiment of the utility model Figure 1 ;

[0033] Fig.11 It is a cross-sectional view of the base assembly in the embodiment of the utility model Figure 2 .

[0034] In the figure: 1-base assembly, 101-base body, 102-outer ring nozzle, 103-inner ring nozzle, 104-air inlet connector, 11-support platform, 121-outer ring air outlet seat, 1211-outer ring air duct, 122-inner ring air outlet seat, 1221-inner ring air guide pipe, 13-annular step, 131-installation position, 14-boss, 15-positioning column, 16-support foot, 17-connecting arm, 171-support part, 18-assembly hole;

[0035] 2-fire distributor, 211-outer ejector tube, 212-inner ejector tube, 221-air cavity, 222-outer ring air cavity, 223-inner ring air cavity, 2231-center protrusion, 2232-upper fixing hole, 2233-lower groove, 2234-stopper, 2235-positioning portion, 23-annular retaining ring, 2301-first arc segment, 2302-second arc segment, 2303-third arc segment, 231-notch, 24-channel, 25-positioning groove, 26-mounting hole, 27-pressing portion;

[0036] 3-ignition assembly, 31-support; 4-fire cover assembly; 5-air baffle plate, 51-circular plate, 52-arc plate, 521-air hole, 522-limiting groove. DETAILED DESCRIPTION

[0037] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0038] refer to Figure 1-7 The present embodiment provides a flame divider assembly, comprising a flame divider 2 and an air baffle 5, wherein the flame divider 2 has an air cavity 221, an outer ring air cavity 222 and an inner ring air cavity 223 which are coaxially arranged and open upward, the air cavity 221 is located between the outer ring air cavity 222 and the outer ring air cavity 223, in the present embodiment, the orthographic projections of the air cavity 221 and the inner ring air cavity 223 are configured to jointly cover the support platform 11 of the base assembly 1, and the outer ring air cavity 222 is configured to respectively cover the nozzle and the air outlet seat of the base assembly 1.

[0039] An outer ejector tube 211 and an inner ejector tube 212 are integrally formed at the bottom of the igniter 2 and arranged in parallel and in the same direction. The outlet of the outer ejector tube 211 is connected to the outer ring air cavity 222. The gas flows clockwise after entering the outer ring air cavity 222 from the outer ejector tube 2111. The outlet of the inner ejector tube 212 is connected to the inner ring air cavity 223. In addition, an annular retaining ring 23 extending downward is integrally formed at the bottom of the air cavity 221. The annular retaining ring 23 is configured to contact the top surface of the support platform 1 of the base assembly 1, so that the igniter assembly remains horizontal after installation, preventing the igniter assembly from shaking due to pressure, and at the same time positioning the ejector of the igniter 1 to ensure the concentricity of the ejector of the igniter and the nozzle of the base assembly.

[0040] A channel 24 is provided on the outer wall or bottom of the air cavity 221 and is located radially outside the annular retaining ring 23, so that secondary air can flow upward along the annular retaining ring 23 into the channel 24, thereby replenishing the air cavity 2211 with secondary air. At the same time, after the overflow liquid in the air cavity 221 is discharged from the channel 24, it can flow into the liquid receiving tray along the annular retaining ring. It can be seen that the annular retaining ring 23 can guide the secondary air and the overflow liquid.

[0041] refer to Figure 4In this embodiment, the outer ejector tube 211 and the inner ejector tube 212 are respectively located at two relatively outer sides of the inner ring air cavity 223 or the central axis of the igniter 2, and part or all of the inner ejector tube 212 and the outer ejector tube 211 are arranged in the annular retaining ring 23, so that the annular retaining ring 23 can shield part or all of the inner ejector. In addition, the distance between the outer ejector tube 211 and the central axis of the igniter 2 is 25 to 35 mm, and the distance between the inner ejector tube 212 and the central axis of the igniter 2 is 5 to 15 mm, so as to avoid the air flow of the inner and outer ejector tubes from interfering with each other due to the close distance.

[0042] refer to Figure 1-5 In this embodiment, the bottom surface of the air cavity 221 is in the shape of a truncated cone with a large lower end and a small upper end, and includes a flat section and an inclined section. The flat section is integrally formed and arranged between the peripheral wall of the inner ring air cavity 223 and the upper end of the inclined section. An annular retaining ring 23 extending downward is integrally formed at the lower peripheral edge of the inclined section of the air cavity 221, and a channel 24 is arranged on the outer cavity wall of the air cavity 221 so that the channel 24 is located radially outside the inclined section, so that it is convenient for the secondary air to flow upward along the inclined section of the ignition distributor, which is conducive to reducing the height of the upper air inlet burner. At the same time, the secondary air flows upward along the inclined section due to the thermal effect, which is also conducive to the flow of the secondary air and reduces the flow resistance; after the overflow falls to the bottom surface of the air cavity 221, it flows along the inclined section and the annular retaining ring 23 to the liquid receiving tray in turn. In other embodiments, the annular retaining ring 23 can be integrally formed and arranged at the lower end of the inclined section of the air cavity 221. In this case, the channel 24 can be arranged at the lower end of the inclined section of the air cavity 221 and located radially outside the annular retaining ring 23. In this way, the diameter of the annular retaining ring 23 can be further reduced, and correspondingly, the volume of the support platform 11 can also be further reduced.

[0043] A plurality of notches 231 are arranged at intervals in the circumferential direction at the lower end of the annular retaining ring 23, which saves materials and facilitates the passage of air and overflow liquid without affecting the supporting effect. Figure 4In this embodiment, the annular retaining ring 23 includes a first arc segment 2301, a second arc segment 2302 and a third arc segment 2303 arranged at intervals in the circumferential direction. The first arc segment 2301 is arranged radially outside the inner ejection tube 212, and one end thereof is integrally formed with the air inlet end of the inner ejection tube 212, and the other end is integrally formed with the air outlet end of the outer ejection tube 211. The air outlet end of the inner ejection tube 212 is arranged at intervals from the first arc segment 2301, so that the first arc segment 2301 can cover most of the inner ejection tube 212. The second arc segment 2302 is arranged radially outside the outer ejection tube 211, and its opposite ends are respectively integrally formed with the air inlet end and the air outlet end of the outer ejection tube 211, so as to cover the middle section of the outer ejection tube 211. The third arc segment 2303 is integrally formed and arranged between the entrance of the inner ejection tube and the entrance of the outer ejection tube. A notch 231 is provided at the lower end of the first arc segment 2301 and the second arc segment 2302, respectively. A channel 24 is provided at the radial outer side of the first arc segment 2301, the second arc segment 2302 and the third arc segment 2303 to increase the secondary air replenishment area and solve the problem that the CO content in the flue gas of the burner is easily exceeded. In other embodiments, the channel 24 in the third arc segment 2303 can be omitted to prevent the overflow from flowing along the channel 24 to the vicinity of the entrance of the inner and outer ejector pipes, thereby blocking the nozzle at the entrance of the ejector pipe.

[0044] refer to Figure 1-4 The bottom surface of the air cavity 221 is provided with a mounting hole 26 located radially inward of the annular retaining ring 23 for vertically passing the ignition assembly 3. In addition, a downwardly extending pressing portion 27 is integrally formed at the bottom of the air cavity 221 of the ignition distributor 2. The pressing portion 27 is configured to press the support 31 of the ignition assembly 3 against the top surface of the support platform 11 of the base assembly 1, see Figure 7 , so as to improve the reliability of the installation of the ignition assembly 3. The specific structure of the pressing portion 27 includes but is not limited to any of the following:

[0045] The first type is that a slope or arcuate surface tilted or curved from top to bottom is formed at the bottom of the annular retaining ring 23 near the support 31 or the mounting hole 26. In the present embodiment, a slope or arcuate surface tilted or curved from top to bottom is formed at one end of the bottom surface of the first arc segment 2301 near the air outlet end of the external ejector tube 211, and the slope or arcuate surface constitutes a clamping portion 27.

[0046] Second, the clamping portion 27 is a downwardly open slot located between the mounting hole and the annular retaining ring, and is configured to be clamped outside the support 31 of the ignition assembly 3 and press the support 31 against the top surface of the support platform 11 .

[0047] refer to Figure 1-4, a central protrusion 2231 extending upward is integrally formed on the bottom surface of the inner ring air cavity 223, and an annular cavity (not shown in the figure) is formed between the central protrusion 2231 and the outer cavity wall of the inner ring air cavity 223, and the annular cavity is connected to the outlet of the inner ejector tube 212. At this time, the gas flows clockwise after flowing from the inner ejector tube 212 into the annular cavity. It can be seen that the setting of the central protrusion 2231 is used to support and fix the air baffle plate 5, and secondly, to make the gas flow clockwise after entering the inner ring air cavity 223. In this embodiment, an upper fixing hole 2232 opening upward is provided at the upper end of the central protrusion 2231, which is used to fix the air baffle plate 5 installed on the top of the central protrusion 2231; a lower groove 2233 opening downward is provided at the lower end of the central protrusion 2231, so as to save materials and demoulding, thereby reducing costs.

[0048] A stopper 2234 is provided in the annular cavity and arranged near the outlet of the inner ejector tube 212. The stopper 2234 is formed integrally with the cavity bottom surface and the inner and outer cavity walls of the annular cavity, and the top of the stopper 2234 is lower than the top of the central protrusion. The stopper is used to prevent the inner ring gas flowing in from the inner ejector tube 212 from being split and flowing out along the two opposite outer sides of the central protrusion 2231, so that the inner ring gas flowing in from the inner ejector tube 212 flows into the annular cavity in the same direction (for example, counterclockwise). A positioning portion 2235 is provided at the top of the stopper 2234 and is arranged vertically and near the outlet of the inner ejector tube 212. The positioning portion 2235 is formed integrally with the top of the central protrusion 2231 and the outer wall of the inner ring gas cavity 223, and is used to pre-position the air baffle 5 to prevent the air baffle 5 from rotating and shifting relative to the central protrusion 2231.

[0049] Example 2

[0050] refer to Figure 1-2 The difference between this embodiment and embodiment 1 is that the ignition divider assembly also includes an air baffle 5, which is arranged in the inner ring air cavity 223 and is respectively located above the stopper 2234 and the outlet of the inner ejector tube 212. One end of the air baffle 5 is connected to the central protrusion 2231, and the other end is abutted or clamped with the outer cavity wall of the inner ring air cavity 223, so as to prevent the inner ring gas flowing out of the inner ejector tube 212 from flowing directly upward, prevent the gas flow rate at the outlet of the inner ejector tube 212 from being too fast, and solve the problems of uneven gas pressure distribution and uneven flame length.

[0051] The air baffle plate 5 includes a circular plate 51 and an arc plate 52. The circular plate 51 is arranged on the top of the central protrusion and is positioned on the central protrusion 2231 through a connecting member (such as a positioning pin or a screw). One end of the arc plate 52 is integrally formed with the circular plate 51, and the other end is abutted or clamped with the outer cavity wall of the inner ring gas cavity 223. In this embodiment, a plurality of gas holes 521 for gas to pass through are provided on the arc plate 52, so that part of the gas can flow into the upper part of the air baffle plate 5 through the gas holes 521, so as to prevent the size of the combustion flame above the air baffle plate 5 from being affected by the setting of the air baffle plate 5. A limiting groove 522 is recessed at one end of the arc plate 52 away from the circular plate 51, and a positioning portion 2235 is convexly provided on the outer cavity wall surface of the inner ring air cavity 223 at a position corresponding to the limiting groove 522. The positioning portion 2235 cooperates with the limiting groove 522 to pre-position the air baffle plate 5 to prevent the air baffle plate 5 from rotating and shifting relative to the center protrusion 2231.

[0052] Example 3

[0053] refer to Figure 5-11 The present embodiment provides an upper air inlet burner, comprising a base assembly 1 and a igniter assembly as described in Embodiment 1 or 2. The base assembly 1 comprises a base body 101, the base body 101 comprises a support platform 11 and an air outlet seat (not shown in the figure), the support platform 11 is circular, the air outlet seat is arranged outside the support platform 11 and is integrally formed with the support platform 11, and the air outlet seat comprises an outer ring air outlet seat 121 and an inner ring air outlet seat 122 arranged in parallel and in the same direction, so that the structure of the base body 101 is simpler, which is conducive to reducing the volume of the base body 101, and only an outer ring air outlet seat 121 and an inner ring air outlet seat 122 are exposed on the stove panel, reducing the exposure of the air seat and the cleaning dead angle, making cleaning more convenient; in addition, by arranging the air outlet seat outside the support platform 11 and fixedly connected to the support platform 11, the positive projection of the outer ring air cavity 222 of the igniter 2 can cover the air outlet seat and the nozzle installed on the air outlet seat, thereby preventing the overflow after the pot overflows from falling and blocking the aperture of the nozzle. In this embodiment, the outer ring air outlet seat 121 and the inner ring air outlet seat 122 are staggered and the distance between them is greater than 35 mm, which is conducive to cleaning and ensures that the air flows when the nozzle injects air once will not interfere with each other due to the close distance.

[0054] The base assembly 1 further includes a nozzle, which includes an outer ring nozzle 102 and an inner ring nozzle 103. The outer ring nozzle 102 is horizontally or obliquely mounted on the upper end of the outer ring outlet seat 121, and the outlet direction of the outer ring nozzle 102 is toward the upper side of the support platform 11. The inner ring nozzle 103 is horizontally or obliquely mounted on the upper end of the inner ring outlet seat 122, and the outlet direction of the inner ring nozzle 103 is toward the upper side of the support platform 11. The base assembly 1 further includes two air inlet connectors 104, which are respectively mounted on the lower ends of the outer ring outlet seat 121 and the inner ring outlet seat 122.

[0055] The ignition divider is arranged on the top of the support platform 11, the bottom surface of the annular retaining ring 23 is in contact with and fits with the top surface of the support platform 11, the inlet of the outer ejector tube 211 is connected with the outer ring outlet seat 121 through the outer ring nozzle 102, and the inlet of the inner ejector tube 212 is connected with the inner ring outlet seat 122 through the inner ring nozzle 103, so that the annular retaining ring 23 is in contact with the top surface of the support platform 11 of the base assembly 1, so that the ignition divider 2 is kept horizontal after installation, and the ignition divider 2 is prevented from being pressed and shaken, and at the same time, the ejector of the ignition divider 2 is positioned to ensure the concentricity of the ejector of the ignition divider 2 and the nozzle of the base assembly 1. In this embodiment, the positive projection of the ignition divider 2 covers the support platform 11, the outlet seat and the nozzle installed on the outlet seat, so that the support platform 11, the outlet seat and the nozzle are all hidden at the bottom of the ignition divider 2, so as to prevent the overflow from falling and clogging the nozzle.

[0056] refer to Figure 6-7 , the diameter of the support platform 11 is greater than or equal to the outer diameter of the annular retaining ring 23, and less than the maximum outer diameter of the fire divider 2. In this embodiment, the outer diameter of the annular retaining ring 23 is the same as the diameter of the support platform 11, so that the support platform 11 can stably and reliably support the annular retaining ring 23 while reducing the volume of the base body 101, so that the support platform 11 is completely covered by the orthographic projection of the fire divider 2, so that the support platform 11 is completely hidden at the bottom of the fire divider 2.

[0057] refer to Figure 8-11 An annular step 13 extending outward is integrally formed at the lower end of the peripheral wall of the support platform 11. The annular step 13 serves as the installation surface of the stove panel. The top surface of the annular step 13 is 2 to 3 mm lower than the top surface of the support platform 11, and the width of the annular step 13 is 2 to 3 mm. A plurality of mounting positions 131 arranged at intervals in the circumferential direction are provided on the annular step 13. The mounting positions 131 can be connected to the stove panel by screws. The orthographic projection of the ignition distributor 2 covers the annular step 13 and all the mounting positions 131. In this way, the mounting positions 131 are closer to the center of the upper air inlet burner and will not be exposed outside the ignition distributor 2, thereby preventing the panel mounting screws from rusting due to being exposed outside the ignition distributor 2 without shielding.

[0058] The outer ring air outlet seat 121 is a vertically arranged outer ring air guide pipe, and the outer ring air guide pipe has a vertically arranged outer ring air channel 1211 (see Fig.10 ), an outer ring air inlet and an outer ring air outlet connected to the outer ring air passage 1211 are respectively provided at the upper and lower ends of the outer ring air guide pipe, and the outer ring air outlet is connected to the outer ejector pipe 211 through the outer ring nozzle 102. The inner ring air outlet seat 122 is a vertically arranged inner ring air guide pipe 1221, and the inner ring air guide pipe 1221 has a vertically arranged inner ring air passage 1221 (see Fig.11 ), an inner ring air inlet and an inner ring air outlet are respectively provided at the upper and lower ends of the inner ring air guide pipe 1221, which are connected to the inner ring airway, and the inner ring air outlet is connected to the inner ejection pipe 212 through the inner ring nozzle 103. It can be seen that both the inner and outer ring air guide pipes have no branching structure. When the gas with a certain pressure flows directly into the nozzle through the vertical air guide pipe without a branching structure, the resistance loss of the flow channel branch is reduced, and the speed and flow rate of the gas ejected from the nozzle 102 are increased, which is conducive to improving the performance of the primary air ejection of the gas, making the combustion more complete and reducing the content of CO in the flue gas.

[0059] A positioning structure is provided between the igniter 2 and the inner ring air outlet seat 122 and / or the outer ring air outlet seat 121 to achieve positioning of the igniter 2 and prevent the eccentricity problem when the igniter 2 is installed on the base assembly 1. In this embodiment, the positioning structure includes a positioning column 15 and a positioning groove 25 that are matched and plugged in. The positioning column 15 is integrally formed and arranged on the top of the inner ring air outlet seat 122 and / or the outer ring air outlet seat 121, and the positioning groove 25 is recessed at the bottom of the igniter 2 at a position corresponding to the positioning column 15.

[0060] refer to Figure 8-11 Two bosses 14 extending outward and arranged side by side are integrally formed at one end of the support platform 11 near the air outlet seat, and the free ends of the two bosses 14 are integrally formed with the outer ring air outlet seat 121 and the inner ring air outlet seat 122, respectively. Of course, the two bosses 14 can also be omitted. The lower ends of the outer ring air guide pipe and the inner ring air guide pipe 1221 both extend downward to the bottom of the support platform 11. A plurality of support legs 16 and a connecting arm 17 extending downward are integrally formed at the bottom of the support platform 11, and the opposite ends of the connecting arm 17 are integrally formed with the lower end of the outer ring air duct and the lower end of the inner ring air duct 1221, respectively. In this embodiment, a support portion 171 is integrally formed at the bottom or the lower end of the outer wall of the connecting arm 17, and the support portion 171 is located between the outer ring air duct and the inner ring air duct 1221. The bottom of each support leg 16 and the bottom of the support portion 171 of the connecting arm 17 are used to contact the bottom shell of the stove, so that the connecting arm 17 can not only serve as a support leg 16, but also play a role in connecting and fixing the inner and outer air ducts and strengthening the strength of the base body 101.

[0061] refer to Figure 5-9The upper air inlet burner also includes an ignition assembly 3. An assembly hole 18 is provided at one end of the support platform 11 away from the air outlet seat. The lower end of the ignition assembly 3 is vertically penetrated in the assembly hole 18. In this way, only the inner and outer air outlet seats and an ignition assembly 3 are exposed on the support platform 11 of the base assembly 1, ensuring the simplicity and easy cleaning of the base body 101. A mounting hole 26 is provided at the position of the ignition distributor 2 corresponding to the assembly hole 18. The mounting hole 26 is provided on the bottom surface of the air cavity 221 and is located radially inside the annular retaining ring 23. In this embodiment, the mounting hole 26 is provided radially inside the first arc segment 2301 of the annular retaining ring 23, and the upper end of the ignition assembly 3 is vertically penetrated in the mounting hole 26.

[0062] The ignition assembly 3 is provided with a support 31 resting against the top of the support platform 11, and a clamping portion 27 extending toward the support 31 is integrally formed at the bottom of the ignition distributor 2. The clamping portion 27 can press the support 31 tightly against the top surface of the support platform 11 to improve the reliability of the installation of the ignition assembly 3.

[0063] refer to Figure 5-7 The upper air inlet burner also includes a fire cover assembly 4, which is arranged on the top of the fire distributor 2 and covers the upward openings of the outer ring air cavity 222 and the inner ring air cavity 223 respectively.

[0064] 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 belong to the protection scope of the present invention.

Claims

1. A fire distributor assembly, characterized in that: The invention comprises a ignition divider (2), wherein the ignition divider (2) comprises an air cavity (221), an outer ring air cavity (222) and an inner ring air cavity (223) which are coaxially arranged, wherein the air cavity (221) is located between the outer ring air cavity (222) and the inner ring air cavity (223). An outer ejection tube (211) and an inner ejection tube (212) are arranged in parallel and in the same direction at the bottom of the fire distributor (2); the outlet of the outer ejection tube (211) is connected to the outer ring air cavity (222), and the outlet of the inner ejection tube (212) is connected to the inner ring air cavity (223). An annular retaining ring (23) extending downward is provided at the bottom of the air cavity (221), and a channel (24) located radially outside the annular retaining ring (23) is opened on the outer cavity wall surface or cavity bottom surface of the air cavity (221).

2. A spark distributor assembly according to claim 1, characterized in that: Part or all of the inner ejector tube (212) and the outer ejector tube (211) are arranged in the annular retaining ring (23); and / or the distance between the outer ejector tube (211) and the central axis of the ignition divider (2) is 25 to 35 mm, and the distance between the inner ejector tube (212) and the central axis of the ignition divider (2) is 5 to 15 mm.

3. The ignition divider assembly according to claim 1, characterized in that: The bottom surface of the air cavity (221) is in the shape of a truncated cone with a larger lower end and a smaller upper end, and comprises a planar section and an inclined section, wherein the planar section is fixedly connected between the peripheral wall of the inner ring air cavity (223) and the upper end of the inclined section; the annular retaining ring (23) is integrally formed and arranged at the bottom of the inclined section, and the channel (24) is arranged at the lower end or radially outer side of the inclined section.

4. A ignition divider assembly according to claim 1 or 3, characterized in that: A plurality of notches (231) are arranged at intervals in the circumferential direction at the lower end of the annular retaining ring (23); and / or A mounting hole (26) located radially inside the annular retaining ring (23) is provided on the bottom surface of the air cavity (221); and / or A downwardly extending pressing portion (27) is integrally formed at the bottom of the fire distributor (2).

5. The ignition divider assembly according to claim 4, characterized in that: The clamping portion (27) is a downwardly opening slot located between the annular retaining ring (23) and the mounting hole (26); or a slope or arcuate surface inclined or curved from top to bottom is formed at the bottom of the annular retaining ring (23), and the clamping portion (27) is composed of the slope or arcuate surface.

6. The ignition divider assembly according to claim 1, characterized in that: A central protrusion (2231) extending upward is integrally formed on the bottom surface of the inner ring air cavity (223), and an annular cavity is formed between the central protrusion (2231) and the outer cavity wall surface of the inner ring air cavity (223), and the annular cavity is connected to the outlet of the inner ejector tube (212).

7. The ignition divider assembly according to claim 6, characterized in that: A stopper (2234) is provided in the annular cavity and is arranged close to the outlet of the inner ejector tube (212). The stopper (2234) enables the inner ring combustion gas flowing out of the inner ejector tube (212) to flow into the annular cavity in the same direction.

8. A spark distributor assembly according to claim 6 or 7, characterized in that: It also includes an air baffle plate (5), which is arranged in the inner ring air cavity (223) and is located above the outlet of the inner ejector tube (212), one end of the air baffle plate (5) is connected to the central protrusion (2231), and the other end is abutted or clamped with the outer cavity wall of the inner ring air cavity (223).

9. The ignition divider assembly according to claim 8, characterized in that: The air baffle plate (5) comprises a circular plate (51) and an arc-shaped plate (52); the circular plate (51) is mounted on the top of the central protrusion (2231); one end of the arc-shaped plate (52) is integrally formed with the circular plate (51), and the other end is abutted or clamped with the outer cavity wall of the inner ring air cavity (223).

10. The ignition divider assembly according to claim 9, characterized in that: A plurality of air holes (521) are provided on the arc plate (52); and / or a limiting groove (522) is recessedly provided at one end of the arc plate (52) away from the circular plate (51); a positioning portion (2235) is protrudingly provided on the outer cavity wall of the inner ring air cavity (223) at a position corresponding to the limiting groove (522); and the positioning portion (2235) is engaged with the limiting groove (522).

11. An upward air inlet burner, characterized in that: include: A base assembly (1) comprising a circular support platform (11) and an air outlet seat, wherein the air outlet seat is arranged outside the support platform (11) and is fixedly connected to the support platform (11), and the air outlet seat comprises an outer ring air outlet seat (121) and an inner ring air outlet seat (122) arranged in parallel and in the same direction; and A flame divider assembly as described in any one of claims 1 to 10, wherein the flame divider (2) is arranged on the top of the support platform (11), the bottom surface of the annular retaining ring (23) abuts and fits against the top surface of the support platform (11), the inlet of the outer ejector tube (211) is connected to the outer ring air outlet seat (121), and the inlet of the inner ejector tube (212) is connected to the inner ring air outlet seat (122).

12. The upward air inlet burner according to claim 11, characterized in that: The diameter of the support platform (11) is greater than or equal to the outer diameter of the annular retaining ring (23), and smaller than the maximum outer diameter of the ignition divider (2); and / or the outer ring air outlet seat (121) and the inner ring air outlet seat (122) are arranged in a staggered manner, and the distance between the two is greater than 35 mm.

13. The upward air inlet burner according to claim 11 or 12, characterized in that: The support platform (11) is integrally formed with two bosses (14) extending outward and arranged side by side at one end close to the air outlet seat, and the two bosses (14) are respectively integrally formed with the outer ring air outlet seat (121) and the inner ring air outlet seat (122); and / or a plurality of support legs (16) and a connecting arm (17) extending downward are integrally formed at the bottom of the support platform (11), and the opposite ends of the connecting arm (17) are respectively integrally formed with the lower end of the outer ring air guide pipe and the lower end of the inner ring air guide pipe (1221), and a supporting portion (171) is provided at the bottom or the lower end of the outer side wall of the connecting arm (17).

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