CN218455223U - Fire distributor and combustor thereof - Google Patents

Abstract

The utility model discloses a distributor and combustor thereof, distributor include the distributor body, and the distributor body includes: a central air cavity; the outer ring air cavity is provided with two air inlets which are adjacently arranged at the bottom or the inner ring wall of the outer ring air cavity; the groove is integrally formed at the bottom of the outer ring air cavity and provided with a groove which extends upwards and is opened downwards, the upper end of the groove extends upwards into the outer ring air cavity and is positioned between the two air inlets, and the radial inner side and the radial outer side of the groove are respectively connected with the inner ring wall and the outer ring wall of the outer ring air cavity. The utility model discloses a distributor, when increasing the thermal efficiency and heat load, the diameter of guaranteeing the combustor is less and manufacturing cost is lower, in addition, sets up to extend up and open-ended recess down through at distributor body integrated into one piece for the recess not only can play the effect of cutting off outer loop air cavity and two air inlets, but also can play the effect that the inner ring goes out the gas seat on the positioning action and/or hold the base.

Description

Fire distributor and combustor thereof

Technical Field

The utility model relates to a cooking utensils technical field especially relates to a fire distributor and combustor thereof.

Background

The upper air inlet burner is more and more widely applied to relevant products such as a gas stove, an integrated cooker, an integrated cooking center and the like, however, the heat load is often smaller than that of the lower air inlet burner due to the limitation of the structure of the burner. If the upper intake air burner is subjected to a large heat load, the burner diameter needs to be increased, which is costly and has low thermal efficiency.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that exist among the prior relevant art to a certain extent at least, for this reason, the utility model provides a distributor, when increasing the thermal efficiency and heat load, it is lower with manufacturing cost to ensure that the diameter of combustor is less, in addition, sets up to extend up and open-ended recess down through at distributor body integrated into one piece for the recess not only can play the effect of cutting off outer loop air cavity and two air inlets, but also can play the effect that the inner ring that the location was used and/or held on the base goes out the gas seat.

According to the above-mentioned a distributor that provides, it realizes through following technical scheme:

a fire divider, comprising a fire divider body, the fire divider body comprising: a central air cavity; the air inlet structure comprises an outer ring air cavity, wherein two air inlets which are adjacently arranged are formed in the bottom or the inner ring wall of the outer ring air cavity; the inner ring cavity is arranged between the central air cavity and the outer ring air cavity; the air inlet structure comprises an outer ring air cavity, a groove, wherein the bottom of the outer ring air cavity is integrally provided with the groove which extends upwards and is opened downwards, the upper end of the groove extends upwards into the outer ring air cavity and is positioned between two air inlets, and the radial inner side and the radial outer side of the groove are respectively connected with the inner ring wall and the outer ring wall of the outer ring air cavity.

In some embodiments, the bottom surface of the outer ring air cavity comprises an upper plane section and two lower flow guide surfaces, each lower flow guide surface is an inclined surface or an arc surface with one high side and the other low side, the lower side of each lower flow guide surface is connected with the groove, and the high side is connected with the upper plane section; the two air inlets are respectively arranged at the lower sides of the two lower flow guide surfaces, or the two air inlets are arranged on the inner annular wall and are respectively close to the lower sides of the two lower flow guide surfaces.

In some embodiments, two secondary air passages for air to pass through are formed in the bottom of the inner annular cavity, the two secondary air passages are respectively located on two opposite outer sides of the central air cavity, and each secondary air passage is communicated with the inner annular cavity.

In some embodiments, the air outlet device further comprises a guide plate, two guide plates which are respectively positioned above the air outlet directions of the two air inlets are arranged in the outer ring air cavity, one ends of the two guide plates, which are close to the groove, are respectively connected with two opposite sides of the upper end of the groove, or one ends of the two guide plates, which are close to the groove, are connected and abut against or are connected with the top of the groove; and a gap for gas to pass through is reserved between the inner ring wall and the radial inner side of the guide plate, and/or a plurality of through holes for gas to pass through are formed in the guide plate.

In some embodiments, a radially outer side of the baffle is integrally formed with the outer annular wall, and an end of the baffle proximate the groove is integrally formed with an upper end of the sidewall of the groove; or two supporting parts positioned on two opposite outer sides of the groove are arranged in the outer ring air cavity, the radial outer side of the guide plate is abutted against the outer ring wall of the outer ring air cavity, and one end of the guide plate, far away from the groove, is abutted against or connected with the supporting parts.

In some embodiments, an upper flow guide surface is arranged on the bottom surface of the flow guide plate, and the upper flow guide surface is an inclined surface or an arc-shaped surface which is lower at one side and higher at the other side close to the groove.

In some embodiments, further comprising an ejector tube assembly, the ejector tube assembly comprising: the two outer injection pipes are arranged at the bottom of the distributor body in the same direction and are respectively communicated with the two air inlets; the inner injection pipe is arranged at the bottom of the distributor body and positioned between the two outer injection pipes, an outlet of the inner injection pipe is communicated with the central air cavity, and an inlet of the inner injection pipe faces the groove.

In some embodiments, the two air inlets are formed in the inner annular wall and are respectively arranged close to the groove, the two outer injection pipes are horizontally arranged in the same direction, and each outer injection pipe is respectively and fixedly connected with the bottom of the inner annular cavity and the inner annular wall.

In some embodiments, a lower partition part extending downwards is fixedly arranged at the bottom of the distributor body, and the lower partition part is positioned between the inlet air inlet front sides of the two outer ejector pipes.

In some embodiments, the inner injection pipe comprises a vertical section and a transverse section, the vertical section vertically penetrates through the bottom center position of the central air cavity, the transverse section is fixedly arranged at the bottom of the distributor body and is positioned between the vertical section and the groove, and the central air cavity is communicated with the transverse section through the vertical section.

In some embodiments, a first positioning column and at least two second positioning columns are fixedly arranged at the bottom of the distributor body, the first positioning column extends downwards and is located in the groove, and the two second positioning columns are located on one side, away from the groove, of the bottom of the distributor body.

According to the combustor that provides above-mentioned, it realizes through following technical scheme:

a burner, comprising: the fire distributor comprises a fire distributor body and an ejector pipe assembly, wherein the ejector pipe assembly comprises an inner ejector pipe and two outer ejector pipes which are fixedly arranged at the bottom of the fire distributor body; the base, set up in distributor below, the base is equipped with outer loop air flue and inner ring air flue, the outer loop air flue communicates two respectively the outer entry of drawing the pipe that penetrates, inner ring air flue intercommunication the interior entry of drawing the pipe the base with be formed with the interval that supplies the air between the distributor, the interval intercommunication the secondary air passageway of distributor.

In some embodiments, the inner annular air passage comprises an inner annular air inlet pipe and an inner annular air outlet seat, the inner annular air outlet seat is vertically and fixedly arranged at the top of the base and is positioned right below the groove, the inner annular air inlet pipe is transversely and fixedly arranged at the bottom of the base, and the inner annular air inlet pipe is communicated with the inlet of the inner injection pipe through the inner annular air outlet seat; the outer ring air flue comprises an outer ring air inlet seat and two outer ring air outlet seats which are arranged in the same direction and vertically, the two outer ring air outlet seats are fixedly arranged on one side, away from the inner ring air outlet seat, of the top of the base, the outer ring air inlet seat is fixedly arranged at the bottom of the base, and the outer ring air inlet seat is communicated with the two inlets of the outer injection pipes through the two outer ring air outlet seats respectively.

In some embodiments, a positioning structure is respectively arranged between the distributor body and the top of the outer ring air flue and the top of the inner ring air flue.

In some embodiments, the positioning structure includes a protrusion and a positioning groove that are engaged and inserted, the protrusion extending upward is fixedly disposed on the top of the outer annular air outlet seat of the outer annular air passage and the top of the inner annular air outlet seat of the inner annular air passage, and the positioning groove with a downward opening is disposed on the positioning column at the bottom of the distributor body; or the top of the outer ring air outlet seat of the outer ring air passage and the top of the inner ring air outlet seat of the inner ring air passage are respectively provided with the positioning grooves with upward openings, and the positioning columns at the bottom of the distributor body form the protruding parts.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the utility model discloses an upper air inlet burner, through set up two air inlets of adjacent arrangement in the bottom of outer ring air cavity or inner ring wall, two outer ejector pipes syntropy set up in distributor bottom and communicate two air inlets respectively, the central air cavity of distributor is through setting up the inner ejector pipe between two outer ejector pipes, under the condition that the diameter of guaranteeing the combustor is less and the manufacturing cost is lower, increase the unit area of admitting air of outer ring air cavity, improve the heat load of combustor;

2. the groove which extends upwards and is open downwards is integrally formed at the bottom of the outer ring air cavity of the distributor body, and the groove is used as an upper partition part, so that the effect of partitioning the outer ring air cavity and the two air inlets can be achieved, mixed gas flowing out of the two air inlets is separated, the mixed gas flowing out of the two air inlets is ensured not to interfere with each other, and in addition, the groove can also have a positioning effect with a base on a combustor and/or can accommodate an inner ring air outlet seat on the base;

3. through drawing the setting of pipe level syntropy two outward, every draws the bottom and the interior rampart of expecting the pipe difference fixed connection interior rampart outward, realizes drawing the pipe to arrange two outward and draws the radial inboard of rampart including, compare in drawing the pipe horizontal fixation in outer loop air cavity bottom with two outward, can make distributor and draw the vertical thickness that penetrates the union coupling as an organic whole outward thinner, reduce the occupation space of vertical direction.

Drawings

FIG. 1 is a first structural schematic of a fire extinguisher according to embodiment 1 of the present invention;

FIG. 2 is a second structural schematic of the fire extinguisher according to embodiment 1 of the present invention;

fig. 3 is a cross-sectional view of the fire extinguisher in the horizontal direction according to embodiment 1 of the present invention;

fig. 4 is a first cross sectional view of the fire extinguisher in the vertical direction in embodiment 1 of the present invention;

fig. 5 is a second cross-sectional view of the fire appliance in the vertical direction in embodiment 1 of the present invention;

fig. 6 is an exploded view of a burner according to embodiment 2 of the present invention;

fig. 7 is a schematic structural view of a burner in embodiment 2 of the present invention;

fig. 8 is a sectional view of a burner according to embodiment 2 of the present invention;

fig. 9 is a first schematic structural diagram of a base according to embodiment 2 of the present invention;

fig. 10 is a second schematic structural view of the base in embodiment 2 of the present invention.

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 flow guide plane, 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-an inner injection pipe, 211-a vertical section, 212-a transverse section, 22-an outer injection pipe, 221-a gas suction contraction section, 222-a straight pipe section and 223-a diffusion section; 31-outer fire cover, 311-outer air mixing chamber, 312-outer fire hole, 313-cutting groove, 314-decoration part, 32-inner fire cover, 321-inner air mixing chamber and 322-inner fire hole; 4-a flow 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 and 541-assembling hole; 61-convex part, 62-positioning groove; 7-an ignition assembly.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, the technical features can be modified or replaced by other parts without departing from the spirit of the present invention, which is covered by the scope of the technical solution of the present invention.

Example 1

Referring to fig. 1 to 3, the present embodiment provides a distributor applied to a burner, the distributor comprising a distributor body 1, wherein the distributor body 1 comprises a center air cavity 11, an outer ring air cavity 12 and an inner ring cavity 13, the center air cavity 11 is disposed at the center of the distributor body 1, and the inner ring cavity 13 is disposed between the center air cavity 11 and the outer ring air cavity 12. Two air inlets 121 which are adjacently arranged are formed in the bottom of the outer ring air cavity 12 or the inner ring wall 1201 so as to increase the unit air inlet area of the outer ring air cavity 12, and the thermal efficiency and the thermal load of the outer ring fire of the combustor are improved under the condition that the diameter of the combustor is ensured to be small.

The distributor body 1 further comprises a groove 17, the groove 17 which is recessed upwards and is open downwards is integrally formed at the bottom of the outer ring air cavity 12, the upper end of the groove 17 extends upwards 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 with the inner ring wall 1201 and the outer ring wall 1202 of the outer ring air cavity 12 so as to partition the outer ring air cavity 12 and the two air inlets 121. It can be seen that the groove 17 as the upper partition 122 can function to partition the outer annular air chamber 12 and the two air inlets 121 to separate the mixture flowing out from the two air inlets 121, so as to ensure that the mixture flowing out from the two air inlets 121 do not interfere with each other, and in addition, the groove 17 can also function as a positioning function with the base on the burner and/or function as an inner annular air outlet seat on the base.

Referring to fig. 3, the bottom surface of the outer annular air cavity 12 includes an upper planar section 123 and two lower flow guiding surfaces 124, each lower flow guiding surface 124 is an inclined surface or an arc-shaped surface with one side higher and the other side lower, and the lower side of each lower flow guiding surface 124 is connected to the groove 17, and the higher side is connected to the upper planar section 123. In the present embodiment, two air inlets 121 are opened at the inner annular wall 1201 and near the lower side of the two lower guide surfaces 124, so as to ensure that the two air inlets 121 are respectively arranged near the lower side of the two lower guide surfaces 124. In other embodiments, two air inlets 121 may be opened at the lower side of the two lower guide surfaces 124. Therefore, by arranging the lower guide surface 124 and designing the air inlets 121 to be arranged close to the lower side of the lower guide surface 124, after the mixed gas of the gas and the air flows out of the two air inlets 121, the mixed gas can move upwards along the lower guide surface 124 in a smooth manner to flow to the upper plane section 123, so that the outer ring air cavity 12 is filled with the mixed gas quickly, and in the process, the mixed gas and the air are mixed more uniformly, and the combustion is more sufficient; secondly, the mixed gas moves upwards along the lower flow guide surface 124 to flow towards the outer fire cover 31, which is beneficial to improving the gas outlet efficiency of the outer fire cover 31.

In this embodiment, the bottom surface of the outer annular air cavity 12 further includes a lower plane section 125 lower than the upper plane section 123, the lower sides of the two lower flow guide surfaces 124 are connected by the lower plane section 125, the groove 17 is integrally formed on the lower plane section 125, the groove 17 divides the lower plane section 125 into a left part and a right part which are arranged at intervals along the circumferential direction, and the two air inlets 121 are opened on the inner annular wall 1201 and are respectively located above the left part and the right part. In other embodiments, the lower planar segment 125 may be omitted.

Referring to fig. 1, two secondary air channels 131 for air to pass through are formed at the bottom of the inner ring cavity 13, the two secondary air channels 131 are respectively located at two opposite outer sides of the central air cavity 11, and each secondary air channel 131 is communicated with the inner ring cavity 13, so that secondary air required by combustion can be provided for the radially outer side of the inner ring fire and the radially inner side of the outer ring fire of the burner through the two secondary air channels 131, the unit ventilation area of the secondary air is increased, combustion is more sufficient, combustion heat efficiency is improved, and the content of CO in flue gas is reduced.

Alternatively, each secondary air passage 131 is preferably an arc-shaped air vent which is arranged along the circumferential direction of the inner ring cavity 13, and the length of the arc-shaped air 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 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 arranged at the bottom of the inner ring cavity 13, and the mounting port 132 is arranged between the two outer injection pipes 22 and is far away from the groove 17 so as to prevent the ignition assembly 7 from being mounted in the combustion distributor

Referring to fig. 1 and 3, the distributor further includes a guide plate 4, two guide plates 4 respectively located above the air outlet direction of the two air inlets 121 are disposed in the outer ring air cavity 12, one ends of the two guide plates 4 close to the grooves 17 are respectively connected to two opposite sides of the upper end of the grooves 17, or one ends of the two guide plates 4 close to the grooves 17 are connected to each other and abut against or are connected to the tops of the grooves 17. A gap 15 is left between the inner annular wall 1201 and the radially inner side of the baffle 4 for the passage of gas. When the burner works, under the action of the guide plate 4, a part of mixed gas flowing out of the gas inlet 121 moves upwards along the lower guide surface 124 in a smooth manner, so that the whole outer ring gas cavity 12 is filled with the mixed gas quickly, and the gas flowing to the outer ring gas cavity 12 is mixed with the air more uniformly and combusted more uniformly and fully; the other mixture flows upward from the gap 15 toward the outer ring cover 31, and the air outlet efficiency of the outer fire holes 312 in the outer ring cover 31 is improved.

In this embodiment, the radial outer side of the baffle 4 is integrally formed with the outer annular wall 1202, and one end of the baffle 4 close to the groove 17 is integrally formed with the upper end of the side wall of the groove 17, so that the baffle 4 and the distributor body 1 are connected into a whole, and the integral casting molding is facilitated. In other embodiments, the deflector 4 and the distributor body 1 may be designed as a separate structure, and at this time, two support portions located on two opposite outer sides of the groove 17 need to be fixedly disposed in the outer annular air cavity 12, when the distributor is installed, the radial outer side of the deflector 4 abuts against the outer annular wall 1202 of the outer annular air cavity 12, a gap 15 is left between the radial inner side and the inner annular wall 1201, one end of the deflector 4 is connected to the upper end or the top of the sidewall of the groove 17, and the other end abuts against or is connected to the support portion. Of course, it is also possible to connect the two baffles 4 at the ends close to the groove 17, and after the two baffles 4 are fixedly connected into a whole, they are located at the top of the groove 17 and abut against or connect with the groove 17.

In particular, in order to achieve the air combing effect and increase the amount of the mixture flowing upward, a plurality of through holes for the air to pass through may be provided on the flow guide plate 4, and the plurality of through holes are arranged at intervals along the length direction of the flow guide plate 4 in the circumferential direction. Of course, it is also possible to design a plurality of through holes in the baffle 4 instead of the gap 15 between the inner annular wall 1201 and the baffle 4.

In addition, in order to improve the flow guiding effect of the flow guiding plate 4 on the mixture, an upper flow guiding surface (not shown in the figure) may be disposed on the bottom surface of the flow guiding plate 4, and the upper flow guiding 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.

Referring to fig. 2, the fire distributor further includes an ejector pipe assembly (not shown in the figure), the ejector pipe assembly includes two outer ejector pipes 22 and one inner ejector pipe 21, and the two outer ejector pipes 22 are arranged at the bottom of the fire distributor body 1 in the same direction and are respectively communicated with the two air inlets 121. The inner injection pipe 21 is arranged at the bottom of the distributor body 1 and positioned between the two outer injection pipes 22, the outlet of the inner injection pipe 21 is communicated with the central air cavity 11, and the inlet of the inner injection pipe 21 faces the groove 17. From this, through with the entry of interior ejector tube 21 towards recess 17, be convenient for utilize the space of recess 17 to hold the effect of the inner ring air outlet seat 532 on the base 5, make things convenient for the entry of interior ejector tube 21 to be connected and communicate with the inner ring air outlet seat 532 through inner ring nozzle 523, refer to fig. 8.

In this embodiment, interior injection pipe 21 and two outer injection pipes 22 adopt casting technology integrated into one piece with distributor body 1 to make distributor body 1 and injection pipe subassembly be connected as an organic whole, the rapid tooling shaping of being convenient for guarantees simultaneously to draw the gas tightness of the junction of injection pipe and distributor body 1.

Referring to fig. 2-3, the two air inlets 121 are opened in the inner annular wall 1201 and are disposed near the groove 122, the two outer injection pipes 22 are horizontally disposed in the same direction, and each outer injection pipe 22 is fixedly connected to the bottom of the inner annular cavity 13 and the inner annular wall 1201, so that the two outer injection pipes 22 are both disposed on the radial inner side of the inner annular wall 1201. Compare in transversely fixing two outer pipes 22 that draw in the bottom of outer ring air cavity 12, this embodiment draws pipe 22 to transversely fix in 13 bottoms of inner ring chamber and lie in the radial inboard of inner ring wall 1201 with every outer pipe 22 that draws, makes distributor body 1 draw the vertical thickness that pipe 22 was connected as an organic whole with outer thinner, reduces vertical direction's occupation space.

Because two outer ejector tubes 22 level syntropy settings, the distance between the two is less, takes place mutual interference easily when drawing the primary air. In this embodiment, in order to make the primary air of two outer injection pipes 22 not interfere with each other, improve the primary air injection amount of each injection pipe 22, refer to fig. 2, the bottom of distributor body 1 sets firmly lower partition 14 that extends downwards, lower partition 14 is located between the inlet air inlet front sides of two outer injection pipes 22, and lower partition 14 and distributor body 1 integrated casting form, like this, lower partition 14 plays the effect of separating the primary air of two outer injection pipes, makes the primary air of two outer injection pipes not interfere with each other. In other embodiments, lower divider 14 may be omitted.

In this embodiment, the two outer injection pipes 22 are throats, and referring to fig. 4, the throats include an air suction contraction section 221, a straight pipe section 222, and a diffusion section 223 connected in sequence, one end of the straight pipe section 222 is communicated with the air suction contraction section 221, and the other end is communicated with the corresponding air inlet 121 through the diffusion section 223. In other embodiments, both the two outer injection pipes 22 may be designed as straight pipes, and of course, one of the outer injection pipes 22 may be designed as a straight pipe, and the other outer injection pipe 22 may be designed as a throat pipe. When the outer injection pipe 22 is a straight pipe, the straight pipe comprises an air suction contraction section 221 and a straight pipe section 222 which are sequentially connected, and the air suction contraction section 221 is communicated with the corresponding air inlet 121 through the straight pipe section 222.

Referring to fig. 5, the inner guide tube 21 includes a vertical section 211 and a lateral section 212, the vertical section 211 vertically penetrates through the bottom center position of the central air chamber 11, and the upper ends of the vertical section 211 upwardly extend into the central air chamber 11 and communicate with each other. The transverse section 212 is fixedly arranged at the bottom of the distributor body 1 and is positioned between the vertical section 211 and the groove 17, the air outlet end of the transverse section 212 is communicated with 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 inner ring air outlet seat 532 and the inner ring nozzle 523 are suitable to be assembled by means of the space of the groove 17. Optionally, the vertical section 211 is a straight tube and the lateral section is a straight tube or a throat.

Referring to fig. 2, the fire divider body 1 further includes a first positioning column 181 and at least two second positioning columns 182, wherein the first positioning column 181 is located in the groove 17, and the upper end thereof is fixedly connected to the groove top surface of the groove 17, and the lower end thereof extends downward. Wherein, the two second positioning columns 182 are fixedly arranged on one side of the bottom of the distributor body 1 far away from the groove 17. From this, through set firmly in the first locating post 181 that extends down in recess 17, when realizing make full use of recess 17's space, through recess 17 and the cooperation of first locating post 181 for recess 17 can play and fix a position, limiting displacement the installation of firearm.

Example 2

Referring to fig. 6-8, the present embodiment provides a burner comprising a base 5 and a distributor as described in embodiment 1. The distributor includes distributor body 1 and draws and penetrate the pipe assembly, draws and penetrates the pipe assembly including setting firmly in the interior injection pipe 21 and two outer injection pipes 22 of 1 bottom of distributor body. The base 5 sets up in distributor below, is equipped with outer annular air flue (not shown in the figure) and inner ring air flue (not shown in the figure) on base 5, and outer annular air flue communicates two outer entries of drawing pipe 22 respectively, draws the entry of drawing pipe 21 in the inner ring air flue intercommunication, is formed with the interval 51 that supplies the air between base 5 and distributor, and interval 51 communicates the secondary air passageway 131 of distributor.

From this, through setting up base 5 in distributor below, be convenient for with the distributor firm reliable in the cooking utensils casing to through interval 51 between base 5 and distributor, when realizing providing secondary air for secondary air passageway 131, reduce the area of contact between distributor and the base 5, do benefit to and reduce distributor and transmit heat loss downwards.

Referring to fig. 8-10, the inner-ring air passage includes an inner-ring air inlet pipe 531, an inner-ring air outlet base 532 and an inner-ring nozzle 533, wherein the inner-ring air inlet pipe 531 is transversely fixed at the bottom of the base 5 and is communicated with an inner-ring air source. The inner ring air outlet base 532 is vertically and fixedly arranged at the top of the base 5 and is positioned under the groove 17, the lower end of the inner ring air outlet base 532 is communicated with the inner ring air inlet pipe 531, and the upper end of the inner ring air outlet base is communicated with the inlet of the inner injection pipe 21 through the inner ring nozzle 533.

The outer ring air flue includes outer ring air inlet seat 521, two outer ring air outlet seats 522 and two outer ring nozzles 523 that the syntropy and vertical arrangement, and wherein, two outer ring air outlet seats 522 set firmly in the one side that the inner ring goes away from air outlet seat 532 in base 5 top. The outer ring air inlet base 521 is fixedly arranged at the bottom of the base 5, the outer ring air inlet base 521 is respectively communicated with the lower ends of the two outer ring air outlet bases 522 and an outer ring air source, and the two outer ring air outlet bases 522 are respectively communicated with the inlets of the two outer injection pipes 22 through the two outer ring nozzles 523.

In this embodiment, two outer ring gas outlet base 522 tops and inner ring gas outlet base 532 tops butt respectively or connect distributor body 1 to the realization is gone out the cooperation of gas outlet base 522 and inner ring gas outlet base 532 through two outer rings, plays the supporting role that reliable and stable supported distributor body 1, and can form the interval 51 that can supply the gas to pass through between messenger's base 5 and the distributor.

Referring to fig. 8-9, the burner further includes a plurality of positioning structures (not shown), which are respectively disposed between the distributor body 1 and the top of the outer annular flue and the top of the inner annular flue. In this embodiment, the positioning structure includes a protrusion 61 and a positioning slot 62 that are inserted and connected in a matching manner, the protrusions 61 extending upward are respectively and fixedly disposed on the top of the two outer ring air outlet bases 522 and the top of the inner ring air outlet base 532, the positioning slot 62 with a downward opening is disposed on the positioning column at the bottom of the distributor body 1, that is, the positioning slots 62 with a downward opening are respectively disposed on the first positioning column 181 and the two second positioning columns 182, as shown in fig. 2.

During the installation, the upper end of the inner ring air outlet seat 532 is inserted in the groove 17, and the boss 61 at the top of the inner ring air outlet seat 532 is matched and inserted with the positioning groove 62 on the first positioning column 181, so that the groove 17 not only can play a role of accommodating the inner ring air outlet seat 532, but also can play a role in positioning and limiting the installation of the fire divider through the matching of the first positioning column 181 in the groove 17 and the boss 61 of the base 5. The convex portions 61 at the top of the two outer ring air outlet bases 522 are matched and inserted with the positioning grooves 62 on the two second positioning columns 182. From this, through the cooperation of three location structure for the distributor is reliably installed on base 5 steadily, prevents the aversion of circumferential direction.

In other embodiments, the positions of the protrusions 61 and the positioning slots 62 can be exchanged, the positioning slots 62 with upward openings are respectively formed in the top of the outer ring air outlet base 522 and the top of the inner ring air outlet base 532, three protrusions 61 extending downward are correspondingly formed in the bottom of the distributor body 1, and the three protrusions 61 are formed by the first positioning column 181 and the two second positioning columns 182 in the bottom of the distributor body 1.

Referring to fig. 6-8, the burner further includes an ignition module 7, and the base 5 is provided with a fixing seat 54 at a position corresponding to the mounting hole 132. The fixing base 54 is provided with an assembly hole 541 suitable for assembling the ignition assembly 7, the ignition assembly 7 vertically penetrates through the mounting hole 132, the lower end of the ignition assembly 7 is matched and inserted with the assembly hole 541 of the fixing base 54, and the upper end of the ignition assembly extends to the upper part of the inner ring cavity 13 and is positioned between the inner fire cover and the outer fire cover for igniting gas flowing out of the inner fire cover 32. Of course, the ignition assembly 7 may be integrated with a flameout protection function in addition to the ignition function, so as to detect whether the burner is flameout.

Referring to fig. 6 to 8, the burner further includes a fire cap assembly including an outer fire cap 31 and an inner fire cap 32, the outer fire cap 31 is disposed to cover the top opening of the outer annular air chamber 12, and an outer air mixing chamber 311 of the outer fire cap 31 communicates with the outer annular air chamber 12. The inner fire cover 32 covers the top opening of the central air chamber 11, and the inner air mixing chamber 321 of the inner fire cover 32 communicates with the central air chamber 11.

In the present embodiment, a plurality of inner flame holes 322 communicating with the inner air mixing chamber 321 are provided in the circumferential direction of the outer side wall of the inner flame cover 32, and when the mixture is ignited and burned at the inner flame holes 322, an inner ring flame is formed. A plurality of outer fire holes 313 communicating with the outer gas mixing chamber 311 are formed in the outer wall circumference of the outer fire cover 31, and when the gas mixture is ignited and burned at the outer fire holes 313, outer ring outer fire is formed, and secondary air supply of the outer ring outer fire is provided by air in the radial outer side of the burner. Alternatively, a plurality of slots 313 are circumferentially formed on the inner side of the top of the outer fire cover 31, each slot 313 communicating with the outer air mixing chamber 311, and when the mixture is ignited and burned at the slot 313, an inner ring outer fire is formed, and the secondary air supply of the inner ring outer fire is provided by the air flowing out upward from the secondary air passage 131. Therefore, the cookware is heated more uniformly by matching the inner ring outer ring fire with the outer ring fire.

In order to improve the appearance aesthetic property or the decoration performance of the outer fire cover 31, a ring-shaped decoration part 314 is arranged on the top of the outer fire cover 31, the decoration part 314 divides the top of the outer fire cover 31 into an inner side and an outer side, all the cutting grooves 31 are circumferentially and uniformly distributed on the inner side of the top of the outer fire cover 31 at intervals, namely all the cutting grooves 31 are positioned on the radial inner side of the decoration part 314.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which all fall within the scope of the invention.

Claims (15)

1. A fire divider, characterized in that, including fire divider body (1), fire divider body (1) includes: a central air cavity (11);

the air conditioner comprises an outer ring air cavity (12), wherein two air inlets (121) which are adjacently arranged are formed in the bottom or the inner ring wall (1201) of the outer ring air cavity (12);

the inner ring cavity (13) is arranged between the central air cavity (11) and the outer ring air cavity (12);

the bottom of the outer ring air cavity (12) is integrally provided with a groove (17) which extends upwards and is opened downwards, the upper end of the groove (17) extends upwards into the outer ring air cavity (12) and is positioned between the two air inlets (121), and the radial inner side and the radial outer side of the groove (17) are respectively connected with an inner ring wall (1201) and an outer ring wall (1202) of the outer ring air cavity (12).

2. The fire divider according to claim 1, characterized in that the bottom surface of the outer ring air cavity (12) comprises an upper plane section (123) and two lower deflector surfaces (124), each lower deflector surface (124) is an inclined or arc surface with one side high and the other side low, and the lower side of each lower deflector surface (124) is connected with the groove (17), and the high side is connected with the upper plane section (123);

the two air inlets (121) are respectively arranged at the lower sides of the two lower flow guide surfaces (124), or the two air inlets (121) are arranged on the inner annular wall (1201) and are respectively close to the lower sides of the two lower flow guide surfaces (124).

3. The fire divider according to claim 1, characterized in that two secondary air channels (131) for air to pass through are opened at the bottom of the inner annular cavity (13), the two secondary air channels (131) are respectively located at two opposite outer sides of the central air cavity (11), and each secondary air channel (131) is communicated with the inner annular cavity (13).

4. The fire divider according to claim 1, characterized by further comprising two flow deflectors (4), wherein two flow deflectors (4) respectively positioned above the air outlet directions of the two air inlets (121) are arranged in the outer annular air cavity (12), one ends of the two flow deflectors (4) close to the groove (17) are respectively connected with two opposite sides of the upper end of the groove (17), or one ends of the two flow deflectors (4) close to the groove (17) are connected and abut against or are connected with the top of the groove (17);

and a gap (15) for gas to pass through is reserved 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 formed in the guide plate (4).

5. A distributor according to claim 4, characterised in that the radially outer side of the deflector (4) is formed integrally with the outer annular wall (1202), and that the end of the deflector (4) close to the groove (17) is formed integrally with the upper end of the side wall of the groove (17);

or two supporting parts positioned on two opposite outer sides of the groove (17) are arranged in the outer annular air cavity (12), the radial outer side of the guide plate (4) is abutted against the outer annular wall (1202) of the outer annular air cavity (12), and one end, far away from the groove (17), of the guide plate (4) is abutted against or connected with the supporting parts.

6. The fire distributor according to claim 4 or 5, characterized in that the bottom surface of the guide plate (4) is provided with an upper guide surface, which is an inclined surface or an arc surface close to the groove (17) and with one side lower and the other side higher.

7. The fire divider of claim 1, further comprising an ejector tube assembly, the ejector tube assembly comprising: the two outer injection pipes (22) are arranged at the bottom of the distributor body (1) in the same direction and are respectively communicated with the two air inlets (121);

the inner ejector pipe (21) is arranged at the bottom of the distributor body (1) and located between the two outer ejector pipes (22), an outlet of the inner ejector pipe (21) is communicated with the central air cavity (11), and an inlet of the inner ejector pipe (21) faces towards the groove (17).

8. The fire divider according to claim 7, characterized in that two air inlets (121) are opened on the inner annular wall (1201) and are respectively arranged near the groove (17), two outer injection pipes (22) are horizontally arranged in the same direction, and each outer injection pipe (22) is respectively fixedly connected with the bottom of the inner annular cavity (13) and the inner annular wall (1201).

9. The fire divider according to claim 7 or 8, characterized in that a lower partition (14) extending downwards is fixedly arranged at the bottom of the fire divider body (1), and the lower partition (14) is located between the inlet air inlet front sides of the two outer ejector pipes (22).

10. The fire divider according to claim 7, characterized in that the inner ejector tube (21) comprises a vertical section (211) and a transverse section (212), the vertical section (211) vertically penetrates through the center of the bottom of the central air cavity (11), the transverse section (212) is fixedly arranged at the bottom of the fire divider body (1) and is located between the vertical section (211) and the groove (17), and the central air cavity (11) is communicated with the transverse section (212) through the vertical section (211).

11. The fire distributor according to claim 1, wherein a first positioning column (181) and at least two second positioning columns (182) extending downwards are fixed to the bottom of the fire distributor body (1), the first positioning column (181) is located in the groove (17), and the two second positioning columns (182) are located on the side of the bottom of the fire distributor body (1) away from the groove (17).

12. A burner, characterized by comprising

The distributor according to any of the claims 1-11, comprising a distributor body (1) and an ejector tube assembly, which comprises an inner ejector tube (21) and two outer ejector tubes (22) fixed to the bottom of the distributor body (1);

base (5), set up in distributor below, base (5) are equipped with outer annular air flue and inner ring air flue, the outer annular air flue communicates two respectively the outer entry of drawing and penetrating pipe (22), the inner ring air flue intercommunication the interior entry of drawing and penetrating pipe (21) base (5) with be formed with interval (51) that supply the air between the distributor, interval (51) intercommunication secondary air passageway (131) of distributor.

13. The burner according to claim 12, characterized in that the inner annular air duct comprises an inner annular air inlet pipe (531) and an inner annular air outlet seat (532), the inner annular air outlet seat (532) is vertically fixed at the top of the base (5) and is positioned right below the groove (17), the inner annular air inlet pipe (531) is transversely fixed at the bottom of the base (5), and the inner annular air inlet pipe (531) is communicated with the inlet of the inner ejector pipe (21) through the inner annular air outlet seat (532);

the outer ring air flue comprises an outer ring air inlet seat (521) and two outer ring air outlet seats (522) which are arranged in the same direction and vertically, the two outer ring air outlet seats (522) are fixedly arranged on one side, far away from the inner ring air outlet seat (532), of the top of the base (5), the outer ring air inlet seat (521) is fixedly arranged at the bottom of the base (5), and the outer ring air inlet seat (521) is communicated with inlets of the outer injection pipes (22) through the two outer ring air outlet seats (522).

14. Burner according to claim 12 or 13, characterized in that positioning structures are provided between the distributor body (1) and the outer and inner ring flue tops, respectively.

15. The burner according to claim 14, wherein the positioning structure comprises a protruding portion (61) and a positioning groove (62) which are matched and inserted, the protruding portion (61) extending upwards is fixedly arranged at the top of the outer annular air outlet seat (522) of the outer annular air flue and the top of the inner annular air outlet seat (532) of the inner annular air flue, and the positioning groove (62) opening downwards is arranged on the positioning column at the bottom of the distributor body (1);

or the top of the outer ring air outlet seat (522) of the outer ring air flue and the top of the inner ring air outlet seat (532) of the inner ring air flue are respectively provided with the positioning groove (62) which is opened upwards, and the positioning column at the bottom of the distributor body (1) forms the protruding part (61).

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