CN211372403U - Completely upper air inlet type burner - Google Patents

Abstract

The utility model relates to a go up air inlet formula combustor completely, which comprises a base, annular outer loop fire lid, inner ring fire lid, outer loop draws and penetrates the pipe and the inner ring draws and penetrates the pipe, this base has the centre bore and encloses the ring cavity of establishing in this centre bore periphery, the equal open-top in this centre bore and ring cavity, and above-mentioned inner ring fire lid and outer loop fire lid cover respectively and establish in centre bore and ring cavity and form inner ring gas mixing chamber and outer loop gas mixing chamber respectively, this inner ring gas mixing chamber and outer loop gas mixing chamber draw with above-mentioned inner ring respectively and penetrate pipe and outer loop and draw and penetrate the pipe and be linked together, above-mentioned base, outer loop fire lid, inner ring fire lid, the outer loop draws and penetrates the pipe and the inner ring draws and penetrates the pipe and be an organic whole. The utility model discloses well base, outer loop fire lid, inner ring fire lid, outer loop draw and penetrate pipe and inner ring draw and penetrate the pipe and be integrative to make the simple structure of combustor, convenient cleanness, and the mounted position is few, can effectively avoid gas leakage, and can effectively reduce the heat dissipation of combustor, and then improve the combustion efficiency of combustor.

Description

Completely upper air inlet type burner

Technical Field

The utility model relates to a gas-cooker field especially relates to a go up air inlet formula combustor completely.

Background

The traditional upper air inlet gas burner has the problem of low injection efficiency due to the limitation of the structure of the burner. The utility model discloses a chinese utility model patent of application number 201711370764.X (publication number is CN108036320A) discloses an overhead burner, it is from last to including being equipped with fire lid down, well dish and base, well dish and pedestal mounting cooperation form the small fire to draw and penetrate the pipe and draw the pipe with main fire, still be equipped with little fire tube and main fire tube of going out in the well dish, the small fire is drawn and is penetrated the pipe end of giving vent to anger and be connected with little fire tube, main fire is drawn and is penetrated the pipe end of giving vent to anger and mainly go out the fire tube and be connected, the other end that the small fire was drawn and is penetrated pipe and main fire and is penetrated the pipe and advance the end and connect the gas interface respectively, well dish and fire lid mounting cooperation form the combustion chamber, the fire lid top surface is equipped with a plurality of evenly distributed. Because the structural constraint of combustion chamber for main fire draws and penetrates a pipe length shorter in this patent, thereby draw to penetrate the distance short to it, draw to penetrate the power to cause the influence. In addition, some upper air inlet burners on the market supplement air required for combustion by opening holes on the panel, soup or cooking impurities easily enter the shell of the cooker through the panel and are inconvenient to clean.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that provide an air inlet type combustor on totally that combustion efficiency is high to prior art.

The utility model aims to solve the second technical problem that an efficient complete enterprising wind formula combustor of drawing is provided to prior art.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an air inlet type combustor on completely, it includes the base, annular outer loop fire lid, the inner ring fire lid, the outer loop draws and penetrates pipe and inner ring and draws and penetrate the pipe, a serial communication port, this base has central chamber and encloses the ring cavity of establishing in this central chamber periphery, the equal open-top in this central chamber and ring cavity, and above-mentioned inner ring fire lid and outer loop fire lid cover respectively and establish in central chamber and ring cavity and form inner ring gas mixing chamber and outer loop gas mixing chamber respectively, this inner ring gas mixing chamber and outer loop gas mixing chamber are drawn with above-mentioned inner ring respectively and are penetrated pipe and outer loop and draw and penetrate the pipe and be linked together, above-mentioned base, outer loop fire lid, inner ring fire lid, the outer loop draws and penetrates the pipe and the pipe is drawn to an organic whole.

Preferably, an annular gap is reserved between the annular cavity and the central cavity, an annular cover body which takes the central cavity as the center is arranged in the annular gap, the opening edge of the upper port of the cover body is connected with the outer peripheral face of the annular cavity into a whole, the two outer ring injection pipes are respectively arranged at the bottom of the cover body, the top faces of the outer ring injection pipes are connected with the bottom face of the cover body into a whole, and the inner ring injection pipe vertically penetrates through the center of the annular cavity. Thereby can realize base, outer ring fire lid, inner ring fire lid, outer ring and draw the integrated structure who penetrates pipe and inner ring better.

Preferably, the top edge of the inner ring fire cover is recessed radially inward in the circumferential direction to form a first ring groove, the first ring groove is overlapped on the ring wall of the central cavity, the top edges of the cavity walls on both sides of the ring cavity are recessed inward in the circumferential direction to form a second ring groove, and the bottom edges of the inner ring wall and the outer ring wall of the outer ring fire cover are overlapped on the corresponding second ring grooves. The inner ring fire cover and the outer ring fire cover are vertically buckled with the base to form an integrated piece through riveting.

The outer ring is drawn and is penetrated the pipe and be two, and each outer ring draws and penetrates the pipe and communicate with each other with above-mentioned outer ring gas mixing chamber respectively, and two outer rings draw and penetrate the pipe and all transversely set up in opposite directions, and the air inlet of both staggers each other. Be provided with two outer loops and draw and penetrate the pipe and can improve the outer loop fire and cover draw and penetrate efficiency, two outer loops draw and penetrate the equal horizontal setting of pipe to enable each outer loop and draw the gas outlet that penetrates the pipe and directly stretch into outer loop gas mixing chamber, reduce the outer loop and draw the energy loss of the mist in the pipe in transmission process, guarantee that the outer loop draws the high efficiency that penetrates the pipe and draw and penetrate, two outer loops draw the air inlet that penetrates the pipe and stagger each other, thereby can avoid mutual interference between them, further improve and draw and penetrate efficiency.

The outer ring fire cover comprises a fire cover body, the fire cover body comprises an annular top wall, an inner ring wall and an outer ring wall, the inner ring wall and the outer ring wall are respectively inclined or vertically and downwardly extended from the inner side edge and the outer side edge of the top wall, the top wall is inclined from inside to outside along the circumferential direction, the outer ring fire holes are distributed on the top wall, so that the phenomenon that overflowing liquid is remained on the outer ring fire cover can be effectively avoided, the outer ring fire holes are prevented from being blocked by the overflowing liquid,

preferably, the outer ring fire cover is provided with an outer ring fire hole, and the depth of the outer ring fire hole is smaller and less than or equal to 2 mm. Therefore, the risk of backfire can be effectively solved, and the adaptability of the combustor to the change of the gas pressure and the fluctuation of the gas components is effectively improved.

The outer ring fire hole is a small hole, the pore passage of the outer ring fire hole is inclined outwards from bottom to top, the outer ring fire hole is arranged on the top wall of the outer ring fire cover along the circumferential direction and is arranged side by side from top to bottom to form a flame zone, the flame zone is positioned on the upper portion of the top wall, and the outer side end of the flame zone is provided with an anti-burning zone for preventing the pot support from being burnt along the circumferential direction at intervals. The outer loop fire hole adopts the aperture that inside and outside multirow was laid can increase the area of contact of flame and air, guarantees the mist and the secondary air abundant contact of gas and air to guarantee the abundant burning of gas and avoided the problem of yellow flame, enable flame temperature more even simultaneously.

Preferably, the ignition device further comprises an ignition needle, wherein an assembly opening is formed in the cover body, and the ignition needle vertically penetrates through the assembly opening.

Preferably, a nozzle seat is arranged below the cover body and comprises a disc-shaped seat body, an inner ring nozzle is vertically arranged at the center of the top surface of the seat body, the inner ring injection pipe is located above the inner ring nozzle, and a gas outlet of the inner ring nozzle is opposite to an air inlet of the inner ring injection pipe. The two sides of the inner ring nozzle are respectively provided with an outer ring nozzle, and the gas outlet of each outer ring nozzle is opposite to the gas inlet of the corresponding outer ring injection pipe.

Furthermore, the top of each outer ring nozzle is provided with a positioning lug, and the corresponding position of the bottom surface of the cover body is provided with a positioning groove for the corresponding positioning lug to be clamped in. The base is provided with a mounting hole, and the lower end of the ignition needle penetrates through the mounting hole.

Compared with the prior art, the utility model has the advantages of: the utility model discloses well base, outer loop fire lid, inner ring fire lid, outer loop draw and penetrate pipe and inner ring draw and penetrate the pipe and be integrative to make the simple structure of combustor, convenient cleanness, and the mounted position is few, can effectively avoid gas leakage, and can effectively reduce the heat dissipation of combustor, and then improve the combustion efficiency of combustor.

Drawings

FIG. 1 is a schematic structural diagram of a burner according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

FIG. 3 is an enlarged view of portion G of FIG. 2;

FIG. 4 is a partial exploded view of a burner according to an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4 in another direction;

FIG. 6 is a partial exploded view of the nozzle holder according to an embodiment of the present invention;

FIG. 7 is a partial sectional view of a burner according to an embodiment of the present invention;

FIG. 8 is an enlarged view of portion H of FIG. 7;

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

fig. 10 is a schematic structural view of an ignition needle according to an embodiment of the present invention;

fig. 11 is a schematic structural view in another direction of fig. 10.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 11, a burner with complete top air intake includes a base 51, an annular outer ring fire cover 52, an inner ring fire cover 53, an outer ring ejector tube 54, an inner ring ejector tube 55, and an ignition needle 56. The base 51 is provided with a central cavity 511 and an annular cavity 512 surrounding the periphery of the central cavity 511, the top of the central cavity 511 and the top of the annular cavity 512 are both open, the inner ring fire cover 53 and the outer ring fire cover 52 are respectively covered on the central cavity 511 and the annular cavity 512 to respectively form an inner ring air mixing cavity 5110 and an outer ring air mixing cavity 5120, and the inner ring air mixing cavity 5110 and the outer ring air mixing cavity 5120 are respectively communicated with the inner ring ejector pipe 55 and the outer ring ejector pipe 54. In this embodiment, two outer ring injection pipes 54 are provided, each outer ring injection pipe 54 is communicated with the outer ring gas mixing chamber 5120, and the two outer ring injection pipes 54 are transversely disposed in opposite directions, and the gas inlets 128 of the two outer ring injection pipes are staggered. Be provided with two outer rings and draw the injection efficiency that the pipe 54 can improve outer ring fire lid 52, two outer rings draw and penetrate the equal horizontal setting of pipe 54, thereby enable that each outer ring draws the gas outlet that penetrates the pipe 54 and directly stretch into outer ring air mixing chamber 5120, reduce the energy loss of the mist in the outer ring draws the pipe 54 in the transmission course, guarantee that the outer ring draws the high efficiency that penetrates the pipe 54 and draw, the air inlet 128 of two outer rings draw and penetrate the pipe 54 staggers each other, thereby can avoid mutual interference between them, further improve and draw and penetrate efficiency.

The cross section of the outer ring air mixing cavity 5120 is changed in an increasing and decreasing alternating manner along the circumferential direction, the air outlets of the outer ring ejector pipes 54 are respectively located at the maximum cross section of the outer ring air mixing cavity 5120, and the decreasing directions of the cross sections of the outer ring air mixing cavity 5120 of the two outer ring air mixing cavities are clockwise or counterclockwise. Thus, the two airflows flowing out of the two outer ring ejector pipes 54 can flow in the same direction (clockwise or counterclockwise) along with the change of the inner shape of the outer ring air mixing chamber 5120 and are mixed with each other, thereby increasing the ejector effect. The alternation of the cross section of the outer ring air mixing chamber 5120 can be realized in various forms, and for the convenience of manufacturing, it is preferable that the bottom surface of the ring chamber 512 is formed with protrusions 5121 and grooves 5122 alternately spaced along the circumferential direction. Furthermore, each groove 5122 inclines from outside to inside, the width of each groove 5122 decreases progressively in the clockwise or counterclockwise direction, the height of each protrusion 5121 adjacent to each groove 5122 increases progressively in the same direction as that of the groove 5122, the width of each protrusion 5121 increases progressively synchronously, and a pair of adjacent grooves 5122 and adjacent protrusions 5121 are spliced to form a section of arc section on the bottom surface of the annular cavity 512, so that two airflows flowing out from two outer ring injection pipes 54 can respectively flow in the same direction in the outer ring air mixing cavity 5120 in a rotating manner, so that the two airflows are better promoted mutually, and the injection effect is further enhanced. In addition, the alternate change of the outer ring air mixing chamber 5120 can reduce the volume of the outer ring air mixing chamber 5120 to a certain extent, thereby preventing the detonation phenomenon generated during the combustion process due to the excessive volume of the outer ring air mixing chamber 5120.

Still further, the end face of the highest position of the protrusion 5121 is a vertical face, that is, one side of the air outlet of each outer ring injection pipe 54, which is led into the outer ring air mixing cavity 5120, is a vertical face 5123, so that the resistance at the air outlet of each outer ring injection pipe 54 can be reduced, and the air flow can enter the outer ring air mixing cavity 5120 and flow along the outer ring air mixing cavity 5120.

The injection structures of the same burners are fixed, the air supply pressures of different gas pipelines are different, and abnormal combustion conditions such as flame leaving or backfire can be caused by high or low gas pressure. In order to increase the adaptability of the combustor, the combustor for the gas stove in the prior art generally adopts an air door structure, and the air door generally adopts an air door sheet and a throttle sheet structure to be matched with the opening of the chassis to realize the adjustment of the air door. For example, chinese utility model patent No. ZL200520117213.9 (No. CN2869625Y) discloses a device for adjusting a gas stove air door, which includes an air flap disposed at an inlet of an injection tube of a gas stove, and is characterized in that the periphery of the air flap has at least one section of circular arc edge using the rotation center of the air flap as the center of circle, the circular arc edge is circumferentially provided with saw-shaped teeth with uniform intervals, the circular arc edge is engaged with a worm through the saw-shaped teeth thereon, the worm is mounted in the gas stove through a worm fixing mechanism, and the lower end of the worm extends out of a bottom shell of the gas stove. The air door structure needs to be operated below the chassis, operation is very inconvenient, and the problems of flameout of the cabinet door and insect feeding caused by opening of the chassis are solved. Therefore, in this embodiment, the inner ring injecting pipe 55 vertically penetrates through the center of the ring cavity 512, in addition, an adjusting part 57 is arranged in the inner ring gas mixing cavity 5110, the distance between the adjusting part 57 and the air outlet of the inner ring injecting pipe 55 is adjustable, and the distance D between the adjusting part 57 and the air outlet of the inner ring injecting pipe 55 is-2 mm or more and 2mm or less because the primary air coefficient of the atmospheric burner is usually 0.45-0.75. The distance D is 2mm, the distance D between the bottom end of the adjusting piece 57 and the air outlet of the inner ring injection pipe 55 is-2 mm, the adjusting piece 57 extends into the air outlet of the inner ring injection pipe 55, and the distance D between the bottom end of the adjusting piece 57 and the air outlet of the inner ring injection pipe 55 is 2 mm. And when D is more than or equal to-2 mm and less than or equal to 0, the distance between the adjusting piece 57 and the air outlet of the inner-ring injection pipe 55 and the primary air coefficient injected by the inner-ring injection pipe 55 are in a decreasing relation, namely when the distance D is increased, the primary air coefficient is reduced, and when the distance D is reduced, the primary air coefficient is increased. In the embodiment, the adjusting member 57 is a cylinder, and the maximum diameter R of the adjusting member 57 is less than or equal to 6mm, because when R is greater than 6mm, the primary air coefficient is less than 0.45, and the combustion condition is rapidly deteriorated. The inner-ring ejector pipe 55 sequentially comprises a horn section 551, a roar 552 and a diffuser section 553 from bottom to top, in this embodiment, when the adjusting member 57 extends into the air outlet of the inner-ring ejector pipe 55 and continues to penetrate into the inner-ring ejector pipe 55, the adjusting member 57 can be always located in the air outlet of the inner-ring ejector pipe 55, preferably, the length of the adjusting member 57 can penetrate into the diffuser section 553 of the inner-ring ejector pipe 55, so that the ejection capacity of the inner-ring ejector pipe 55 can be adjusted by adjusting the length of the diffuser section 553. Further preferably, the adjusting member 57 is further extended to the throat 552 of the inner annular injector tube 55, so that the amount of primary air introduced can be further adjusted by adjusting the size of the throat 552.

Further, in this embodiment, the inner ring fire cover 53 includes a cylindrical base 531 and an end cover 532 covering the top opening of the base 531, the side wall of the base 531 is circumferentially provided with an inner ring fire hole 530, the adjusting member 57 is a cylinder, the lower surface of the end cover 532 vertically extends downward to form an adjusting sleeve 5321, the upper end of the adjusting member 57 is in threaded connection with the adjusting sleeve 5321, so that the injection relative distance between the adjusting member 57 and the inner ring injection pipe 55 can be adjusted by adjusting the relative position between the adjusting member 57 and the adjusting sleeve 5321. In this embodiment, the free end of the adjusting member 57 is enlarged to form the end cap 571, i.e. the diameter of the adjusting member 57 is at the maximum at the end cap 571. In particular, the adjusting member 57 is a screw in this embodiment.

In this embodiment, the top edge of the inner ring fire cover 53 is recessed radially inward in the circumferential direction to form a first ring groove 533, the first ring groove 533 is overlapped on the ring wall of the central cavity 511, the top edges of the cavity walls on both sides of the ring cavity 512 are recessed inward in the circumferential direction to form second ring grooves 5123, and the bottom edges of the inner ring wall 522 and the outer ring wall 523 of the outer ring fire cover 52 are overlapped on the corresponding second ring grooves 5123. The inner ring fire cover 53 and the outer ring fire cover 52 are buckled with the base 51 up and down to form a whole body through riveting. The structure of a whole makes the simple structure of combustor, convenient cleanness to assembly position is few, can effectively avoid gas leakage, and can effectively reduce the heat dissipation of combustor, and then improves the combustion efficiency of combustor.

The outer ring fire cover 52 is provided with an outer ring fire hole 520, the depth of the outer ring fire hole 520 is smaller and less than or equal to 2mm, the depth of the outer ring fire hole 520 in the embodiment is smaller and is realized through a thin plate structure, namely, the whole outer ring fire cover 52 in the embodiment adopts a thin plate structure. The depth of the outer ring fire hole 520 is small, so that the resistance at the outer ring fire hole 520 can be reduced, the resistance at the air outlet of the outer ring injection pipe 54 is reduced, and the injection strength of the outer ring injection pipe 54 is improved. The outer ring fire cover 52 comprises a fire cover body, the fire cover body comprises an annular top wall 521, an inner ring wall 522 and an outer ring wall 523, the inner ring wall 522 and the outer ring wall 523 respectively incline or vertically extend downwards from the inner edge and the outer edge of the top wall 521, the top wall 521 inclines from inside to outside along the circumferential direction, the outer ring fire holes 520 are distributed on the top wall 521, so that the phenomenon that overflowing liquid is remained on the outer ring fire cover 52 can be effectively avoided, the outer ring fire holes 520 are prevented from being blocked by overflowing liquid,

the outer ring fire hole 520 is a small hole, and the pore canal of the outer ring fire hole is inclined outwards from bottom to top, the outer ring fire hole 520 is circumferentially arranged on the top wall 521 of the outer ring fire cover 52 and is arranged side by side up and down to form a flame zone 524, the flame zone 524 is located on the upper portion of the top wall 521, and the outer side end of the flame zone 524 is circumferentially provided with burning prevention zones 525 for preventing the support legs of the pot support from being burned at intervals. The outer ring fire holes 520 adopt small holes distributed in inner and outer rows to increase the contact area of flame and air and ensure that the mixed gas of gas and air is fully contacted with secondary air, thereby ensuring the full combustion of the gas and avoiding the problem of yellow flame and simultaneously ensuring that the temperature of the flame is more uniform. Preferably, the hole interval between each adjacent outer ring fire hole 520 is less than or equal to the twice of outer ring fire hole 520's aperture, because outer ring fire hole 520's degree of depth is less in this embodiment, the too fast problem of speed of giving vent to anger can be brought to gas resistance undersize, and outer ring fire hole 520 adopts the aperture structure, and the multirow is laid, can interact and form stronger steady flame effect between each outer ring fire hole 520's the flame, even local fire hole blocks up, flame still can the stable combustion. In the embodiment, the aperture of the outer ring fire hole 520 is smaller than or equal to 1.6mm, the depth of the outer ring fire hole 520 is smaller than or equal to 2mm, and the thermal strength of the fire hole is 3-5 × 103kW/mm2, so that the risk of backfire can be effectively solved, and the adaptability of the combustor 5 to the pressure change and the fluctuation of gas components is effectively improved.

The upper end of the inner wall 522 of the outer ring fire cover 52 is provided with a fire transfer groove 526 extending vertically, the fire transfer groove 526 is communicated with the outer ring air mixing chamber 5120, and the upper end of the fire transfer groove 526 is adjacent to the flame zone 524. In this embodiment, the inner annular wall 522 of the outer annular fire cover 52 is inclined downward from outside to inside from the inner edge of the top wall 521 of the outer annular fire cover 52 to form an inclined annular wall 527, the inner edge of the inclined annular wall 527 extends vertically downward to form a vertical annular wall 528, the inclined annular wall 527 and the vertical annular wall 528 form the inner annular wall 522, and the fire transfer groove 526 extends from outside to inside from the inner edge of the inner annular wall 522 to the upper portion of the vertical annular wall 528, so that the fire transfer groove 526 can be as close to the inner annular fire cover 53 as possible, and the success rate of transferring fire from the inner ring to the outer ring can be further improved. The width of the fire transfer groove 526 is gradually increased from outside to inside, so that the air outlet quantity of the inner side of the fire transfer groove 526 is large, the success rate of transferring fire from the inner ring to the outer ring is guaranteed, the air outlet quantity of the outer side of the fire transfer groove 526 is small, and the interference of the fire transfer groove 526 on secondary air required by the outer ring fire hole 520 is reduced. Preferably, in this embodiment, the fire transfer grooves 526 are two parallel grooves, so as to improve the fire transfer stability. In addition, in this embodiment, the fire transfer groove 526 is disposed above the outer ring injection pipe 54, so that interference of secondary air on the inner side fire transfer gas is reduced, fire transfer is more stable, and influence of fire transfer flame on the secondary air is reduced.

An annular gap is reserved between the annular cavity 512 and the central cavity 511, an annular cover body 58 taking the central cavity 511 as the center is arranged in the annular gap, the opening edge of the upper opening of the cover body 58 is connected with the outer peripheral surface of the annular cavity 512 into a whole, the two outer-ring injection pipes 54 are respectively arranged at the bottom of the cover body 58, the top surface of each outer-ring injection pipe 54 is connected with the bottom surface of the cover body 58 into a whole, and therefore secondary air channels 59 formed by the bottom surface of the bottom wall of the annular cavity 512 and the top surface of the cover body 58 are respectively formed on two sides of the bottom of the base 51. The cover 58 is opened with an assembly port 581, and the ignition pin 56 is installed in the assembly port 581. Thus, the secondary air passage 59 can promote the combustion of the flame in the inner ring fire hole 530 and can also play a role of assisting the ignition. In addition, the setting through the cover body 58 can realize the reposition of redundant personnel of primary air and secondary air, avoids the gas mixture after the burning to sneak into each and draws in the pipe to guarantee the normal combustion of combustor 5.

Further, preferably, the top surface of the cover 58 is inclined from top to bottom in the circumferential direction, and the bottom surface of the bottom wall of the annular cavity 512 corresponding to each secondary air passage 59 is inclined from outside to inside, so that each secondary air passage 59 is inclined upwards, the length of each secondary air passage 59 can be reduced, and the resistance to airflow can be reduced. In addition, the temperature of the air around the burner 5 is higher and higher as the distance from the burner 5 is reduced during the combustion process, and the secondary air passage 59 is inclined upward to approach the flow direction of the hot secondary air as the pressure is gradually increased, thereby reducing the energy loss in the flow.

Still further, the bottom surface of the bottom wall of the annular cavity 512 corresponding to each secondary air channel 59 is spirally raised from the outer ring injection pipe 54 on one side to the outer ring injection pipe 54 on the other side, so that the airflow forms a vortex in the secondary air channel 59, the speed of guiding the secondary air to the inner ring fire hole 530 can be reduced, and the effects of stabilizing flame and assisting ignition are further improved.

In this embodiment, in order to make the airflow flow better in each secondary air passage 59, the upper surface of the outer end of each outer ring injection pipe 54 is recessed downward and the cover 58 covers the top surface of the outer ring injection pipe 54, the mouth edge of the upper port of the cover 58 is smoothly connected with the outer peripheral surface of the annular cavity 512, and the upper surface of the cover 58 and the bottom surface of the bottom wall of the annular cavity 512 are both smooth, so that the airflow can be better guided to flow along the secondary air passage 59 under the action of wall adhesion.

The side wall of the air inlet of each outer ring injection pipe 54 extends outwards along the circumferential direction to form a first blocking wall 582, and the upper end edge of the first blocking wall 582 is connected with the bottom surface of the cover 58 into a whole. The outer edge of the first blocking wall 582 is located at the bottom of the cover 58, and the outer edge extends toward the other side along the circumferential direction of the cover 58 to form a second blocking wall 583, the free end of the second blocking wall 583 is sleeved on the outer ring injection pipe 54 and is connected with the outer circumferential surface of the outer ring injection pipe 54 into a whole, and the upper end edge of the second blocking wall 583 is connected with the bottom surface of the cover 58 into a whole. Through the setting of first wall 582 and second wall 583 that keeps off to separate the space of cover 58 bottom, make each outer loop draw the air inlet department of penetrating pipe 54 to form independent air inlet space respectively, guarantee penetrating of sufficient primary air, avoid two outer loops to draw and penetrate pipe 54 and take place to rob the phenomenon of air. The nozzle holder 50 is disposed below the cover 58, and includes a disc-shaped base 501, an air inlet gap is formed between the lower end edge of each second blocking wall 583 and the top surface of the base 501, and preferably, the lower end edge of each second blocking wall 583 is wavy, so that the appearance of the burner 5 is beautiful, primary air can be promoted to enter the space partitioned by the first blocking wall 582 and the second blocking wall 583, and the air inlet gap can be prevented from being blocked by the downward flow of overflow along the surface of the cover 58 and the second blocking wall 583. In addition, the bottom parts of the two ends of each second blocking wall 583 are respectively provided with a cushion block 5831, the bottom parts of the cushion blocks 5831 are respectively abutted against the top surface of the base 501, and each cushion block 5831 can vertically position the combustor 5, so that the mounting stability of the combustor 5 is improved, downward heat transfer in the combustion process can be reduced, the heat efficiency is improved, and the influence on the heat load is reduced.

An inner ring nozzle 502 is vertically arranged at the center of the top surface of the base 501 of the nozzle holder 50, the inner ring ejector pipe 55 is positioned above the inner ring nozzle 502, and a gas outlet of the inner ring nozzle 502 is opposite to an air inlet of the inner ring ejector pipe 55. Two sides of the inner ring nozzle 502 are respectively provided with an outer ring nozzle 503, and the gas outlet of each outer ring nozzle 503 is opposite to the gas inlet of the corresponding outer ring injection pipe 54. Moreover, each outer ring nozzle 503 is positioned with the cover 58 by a snap-fit structure, thereby facilitating the assembly of the nozzle holder 50 with the burner 5. Specifically. In this embodiment, the top of each outer ring nozzle 503 is provided with a positioning protrusion 5031, and the corresponding position of the bottom surface of the cover 58 is provided with a positioning groove 584 for the corresponding positioning protrusion 5031 to insert.

The ignition needle 56 is vertically disposed on the nozzle holder 50, and the upper end of the ignition needle 56 passes through the assembly hole 581 of the cover 58, the ignition needle 56 includes a protective case 560, and an electrode needle inserted in the protective case 560, one end of which is exposed to the protective case 560, the electrode needles include a first electrode needle 561 as a discharge end and a second electrode needle 562 capable of functioning as a receiving end, and the length of the first electrode needle 561 is shorter than that of the second electrode needle 562, in the assembled state, the first electrode needle 561 and the second electrode needle 562 both extend vertically upwards and then bend towards the inner fire cover 53, and the bending parts of the two are inclined towards the opposite direction relative to the inner fire cover 53, and, the distance from the end of the first electrode needle 561 to the inner fire cover 53 is smaller than the distance from the end of the second electrode needle 562 to the inner fire cover 53, and the distance between the end of the first electrode needle 561 and the end of the second electrode needle 562 is the shortest distance therebetween. Therefore, the first electrode needle 561 can preferably discharge to the inner ring fire cover 53, and can be conducted through the second electrode needle 562 when the loop of the burner 5 is blocked by foreign matters, the ignition success rate is improved, and the normal work of the burner 5 is ensured. In this embodiment, the protective shell 560 is a ceramic body.

Further, the whole rectangular form that is vertical extension of appearance of ignition needle 56 because the mounting hole 5011 of the base 501 of above-mentioned nozzle block 50 is worn to establish by the lower extreme of ignition needle 56, and the upper end is worn to establish on the cover body 58, therefore the appearance of ignition needle 56 is rectangular form and can effectively reduce the area that blocks of penetrating the pipe air inlet to each to reduce the influence that the setting of ignition needle 56 penetrated the performance to combustor 5.

Further, the top surface of the protective shell 560 is stepped, and the first electrode needle 561 and the second electrode needle 562 are respectively vertically arranged on the top surface of the protective shell 560, so that accumulated water can be prevented from being formed on the top surface of the protective shell 560, and further the root of the electrode needle is prevented from discharging due to the accumulated water.

Further, the middle portion of the protective case 560 extends outward in the circumferential direction to form a positioning boss 5601, and when the ignition needle 56 is inserted into the base 501, the positioning boss 5601 is supported on the edge of the mounting hole 5011, so that the ignition needle 56 can be stably inserted into the seat body 531. Further, the bottom of the positioning bump 5031 has a reinforcing piece 5602 protruding outward 5121, so that the strength of the ignition pin 56 can be enhanced to prevent the ignition pin 56 from being broken when the burner 5 is assembled and disassembled.

In addition, the projection of the electrode pins on the horizontal plane does not exceed the maximum cross section of the protective case 560, so that the ignition pin 56 can smoothly pass through the positioning hole 585 of the housing 58.

Further, be provided with in the above-mentioned kitchen shell 1 can with above-mentioned ignition needle 56 complex ion igniter 563, combustor 5 in this sample embodiment need not to set up the thermocouple in addition, can play the effect of thermocouple through the cooperation of ion igniter 563 and first electrode needle 561 to make combustor 5's structure simpler, avoid setting up the thermocouple and make the space below the cover body 58 local promotion, and then cause the influence to each drawing the penetrating performance of penetrating the pipe.

Claims (10)

1. A full upper air inlet type burner comprises a base (51), an annular outer ring fire cover (52), an inner ring fire cover (53), an outer ring ejector pipe (54) and an inner ring ejector pipe (55), characterized in that the susceptor (51) has a central chamber (511) and an annular chamber (512) surrounding the periphery of the central chamber (511), the top of the central cavity (511) and the top of the ring cavity (512) are both open, the inner ring fire cover (53) and the outer ring fire cover (52) are respectively covered on the central cavity (511) and the ring cavity (512) to respectively form an inner ring air mixing cavity (5110) and an outer ring air mixing cavity (5120), the inner ring air mixing cavity (5110) and the outer ring air mixing cavity (5120) are respectively communicated with the inner ring ejector pipe (55) and the outer ring ejector pipe (54), the base (51), the outer ring fire cover (52), the inner ring fire cover (53), the outer ring injection pipe (54) and the inner ring injection pipe (55) are integrated.

2. The burner of claim 1, wherein an annular gap is left between the annular chamber (512) and the central chamber (511), an annular cover body (58) centered on the central chamber (511) is arranged in the annular gap, the mouth edge of the upper port of the cover body (58) is connected with the outer peripheral surface of the annular chamber (512) into a whole, the outer ring injection pipe (54) is transversely arranged at the bottom of the cover body (58), the top surface of each ring injection pipe (54) is connected with the bottom surface of the cover body (58) into a whole, and the inner ring injection pipe (55) is vertically arranged at the center of the annular chamber (512).

3. The burner of claim 2, wherein the inner ring fire cover (53) comprises a cylindrical base body (531) and an end cover (532) covering the top opening of the base body (531), the top edge of the inner ring fire cover (53) is recessed radially inwards along the circumferential direction to form a first ring groove (533), the first ring groove (533) is overlapped on the ring wall of the central cavity (511), the top edges of the two side cavity walls of the ring cavity (512) are recessed inwards along the circumferential direction to form a second ring groove (5123), the bottom edges of the inner ring wall (522) and the outer ring wall (523) of the outer ring fire cover (52) are overlapped on the corresponding second ring grooves (5123), and the inner ring fire cover (53) and the outer ring fire cover (52) are fastened with the base (51) up and down to form a single piece through riveting.

4. The burner of claim 2, wherein the number of the outer ring ejector pipes (54) is two, each outer ring ejector pipe (54) is respectively communicated with the outer ring air mixing chamber (5120), the two outer ring ejector pipes (54) are transversely arranged in opposite directions, and the air inlets (128) of the two outer ring ejector pipes are staggered.

5. The burner of claim 2, wherein the outer ring fire cover comprises an outer ring fire cover body, the fire cover body comprises an annular top wall (521) and an inner ring wall (522) and an outer ring wall (523) which are respectively inclined or vertically extend downwards from the inner edge and the outer edge of the top wall (521), the top wall (521) is inclined from inside to outside along the circumferential direction, and the outer ring fire holes (520) are arranged on the top wall (521).

6. The full upper intake type burner as claimed in claim 5, wherein the outer ring fire cover (52) is provided with an outer ring fire hole (520), and a depth of the outer ring fire hole (520) is 2mm or less.

7. The burner with complete upper air intake as claimed in claim 6, wherein the outer ring fire hole (520) is a small hole and its hole channel is inclined from bottom to top to outside, the outer ring fire hole (520) is circumferentially disposed on the top wall (521) of the outer ring fire cover (52) and is juxtaposed up and down to form a flame zone (524), the flame zone (524) is located on the upper portion of the top wall (521), and the outer ends of the flame zone (524) are circumferentially spaced to form anti-burning zones (525) for preventing the burning of the legs of the pot support.

8. The burner of any one of claims 2 to 7, further comprising an ignition needle (56), wherein the housing is provided with an assembly opening (581), and the ignition needle (56) is vertically inserted into the assembly opening (581).

9. The burner with complete top air intake according to claim 8, wherein the cover (58) is provided with a nozzle holder (50) below, the nozzle holder comprises a disc-shaped base (501), an inner ring nozzle (502) is vertically arranged at the center of the top surface of the base (501), the inner ring injection pipe (55) is positioned above the inner ring nozzle (502), the gas outlet of the inner ring nozzle (502) is opposite to the air inlet of the inner ring injection pipe (55), two outer ring nozzles (503) are respectively arranged at two sides of the inner ring nozzle (502), and the gas outlet of each outer ring nozzle (503) is opposite to the air inlet of the corresponding outer ring injection pipe (54).

10. The burner of claim 9, wherein the top of each outer ring nozzle (503) is provided with a positioning protrusion (5031), the corresponding position of the bottom surface of the cover (58) is provided with a positioning groove (584) for the corresponding positioning protrusion (5031) to insert, the base (501) is provided with a mounting hole (5011), and the lower end of the ignition needle (56) is inserted into the mounting hole (5011).

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