CN111121033A - Upper air inlet burner and cooker applying same - Google Patents

Upper air inlet burner and cooker applying same Download PDF

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Publication number
CN111121033A
CN111121033A CN201811290447.1A CN201811290447A CN111121033A CN 111121033 A CN111121033 A CN 111121033A CN 201811290447 A CN201811290447 A CN 201811290447A CN 111121033 A CN111121033 A CN 111121033A
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CN
China
Prior art keywords
mixing chamber
air
burner
wall
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811290447.1A
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Chinese (zh)
Inventor
兰华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Fotile Kitchen Ware Co Ltd
Original Assignee
Ningbo Fotile Kitchen Ware Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Fotile Kitchen Ware Co Ltd filed Critical Ningbo Fotile Kitchen Ware Co Ltd
Priority to CN201811290447.1A priority Critical patent/CN111121033A/en
Publication of CN111121033A publication Critical patent/CN111121033A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • F23D14/58Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • F23D14/64Mixing devices; Mixing tubes with injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00Passages or apertures for delivering secondary air for completing combustion of fuel 

Abstract

The invention relates to an upper air inlet burner, which comprises a base containing a first injection pipe, a connecting plate arranged on the base, a first gas mixing chamber arranged in the center between the connecting plate and a connecting body, wherein the connecting plate is provided with a vertical first gas channel and can cover the base, and a first fire cover arranged on the connecting body, and the first gas mixing chamber corresponds to the first gas channel, and the upper air inlet burner is characterized in that: the first injection pipe is transversely arranged in the base, the inner cavity of the first injection pipe is sequentially provided with the transition section and the horn section along the airflow direction from the air inlet to the air outlet, and the lower surfaces of the horn section and the first gas channel form the buffer cavity.

Description

Upper air inlet burner and cooker applying same
Technical Field
The invention relates to a burner of a gas cooker, in particular to an upper air inlet type cooker burner with multiple nozzles.
Background
At present, a complete upper air inlet type burner is used in a plurality of gas cookers, and because primary air and secondary air required by the complete upper air inlet type burner during burning are both from the upper part of a cooker panel, a chassis of the gas cooker can be completely sealed. However, the conventional burner with complete upward air intake is realized by the gap between the air mixing chamber and the base when primary air is supplemented, and therefore, the problem is that the gap exists between the air mixing chamber and the base, and after the mounting screw of the panel is mounted, the mounting screw can be seen from the outside of the burner, so that the appearance of the burner is not beautiful enough. Moreover, after the gap is formed between the base and the air mixing chamber, the overflowing liquid can flow into the base and the round basin-shaped main body positioned below the panel, namely the bottom cup, through the gap, so that much inconvenience is brought to maintenance and cleaning of a user, and the normal use of the burner can be influenced if the overflowing liquid cannot be removed for a long time. In addition, the structure of the 'bottom cup' causes the connecting part of the outlet of the injection pipe and the mixed gas channel to have sharp bend, which obviously increases injection resistance, and the design is like Chinese utility model patent ZL201120156854.0 (No. CN202082922U), the injection effect is not good, meanwhile, the primary air supplemented from the panel of the upper air inlet burner enters the 'bottom cup' by utilizing the negative pressure generated by the gas injected by the nozzle, which easily causes the uneven distribution of the air flow of the primary air and influences the primary air coefficient to a certain extent, thereby causing the uneven gas pressure flowing out from the fire holes arranged along the circumferential direction of the outer ring fire cover or the inner ring fire cover, thereby causing the uneven flame of the outer ring fire generated by the outer ring fire cover or the inner ring fire generated by the inner ring fire cover, and simultaneously, the second injection pipe and the first injection pipe of the burner are both arranged with the 'bottom cup', or with the setting of end cup components of a whole that can function independently, no matter the problem that the effect of drawing is poor is drawn in the influence that sets up with "end cup" an organic whole, still with the potential safety hazard that the seam produced that sets up the body that sets up with end cup components of a whole that can function independently brought, all need make further improvement to current last air inlet combustor. In addition, the invention discloses a multi-nozzle, large-flow and completely upward air inlet embedded type burner for a household gas stove (with the publication number of CN101446415A) as Chinese invention patent application with the application number of 200810220263.8, wherein the invention respectively arranges the inner nozzle and the outer nozzle corresponding to the inner ring ejector and the outer ring ejector at two sides in the diameter range of the burner, which can effectively improve the limitation of short length of the ejector pipe, simultaneously can realize independent adjustment of the inner flame and the outer flame, has higher combustion power, and becomes the mainstream trend of the upper air inlet burner pursuing high power, but because the inner ring ejector and the outer ring ejector are still arranged in a bottom cup, the integral height of the burner is still higher, and the integral aesthetic property is poorer.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an upper intake burner capable of improving the more uniform mixing of the primary air/gas mixture of the inner ring in view of the above-mentioned prior art.
The second technical problem to be solved by the present invention is to provide an upper intake burner capable of improving the thermal efficiency of inner ring combustion in view of the above-mentioned prior art.
The third technical problem to be solved by the present invention is to provide an upper intake burner which can achieve high thermal power and effectively reduce the entire height of the burner, in view of the above-mentioned current state of the art.
A fourth technical problem to be solved by the present invention is to provide an upper intake air burner that can sufficiently supplement air and can sufficiently burn, in view of the above-mentioned prior art.
A fifth technical problem to be solved by the present invention is to provide an upper inlet air burner which is convenient for users to clean in view of the above prior art.
The sixth technical problem to be solved by the present invention is to provide a cooking stove using the above upper intake burner, aiming at the above prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: this go up air inlet combustor, its characterized in that: comprises that
The base has held first drawing and penetrates the pipe:
the connecting body is arranged on the base and comprises a first plate body, a vertical first gas channel is arranged in the center of the first plate body, and the outer peripheral edge of the first plate body extends in the horizontal direction and can cover the base;
the first fire cover is arranged on the connecting body, and a first gas mixing chamber positioned in the center is formed between the first fire cover and the first gas channel of the connecting body;
the air outlet end of the first injection pipe is in fluid communication with the first air mixing chamber through the buffer cavity, and the air inlet end of the first injection pipe is matched with a first ejector.
The buffer cavity can be arranged in various forms, such as above, below or around the first injection pipe, or in other forms, the first injection pipe is integrally formed with the base, and a gap between the pipe wall of the first injection pipe and the first fuel gas channel forms the buffer cavity.
Considering from the angle of convenient processing, the first injection pipe and the base are integrally formed, and the buffer cavity is formed by a gap between the pipe wall of the first injection pipe and the first gas channel.
In order to realize the connection between the connector and the base, the inner cavity of the first injection pipe sequentially comprises a transition section and a horn section along the airflow direction from the air inlet to the air outlet, the lower surface of the horn section and the lower surface of the first gas channel are provided with the buffer cavity, the transition section of the first injection pipe is provided with a convex block protruding upwards towards the periphery of the first plate body, and the base and the periphery of the first plate body penetrate through the convex block through a fastener to realize the connection between the base and the first plate body.
In order to make the user control the central fire and the periphery fire that the combustor formed alone, still including the mount pad with set up on the mount pad and be located first gas mixing chamber periphery and mutually independent second gas mixing chamber, the second gas mixing chamber is including the inner circle wall and the outer lane wall that concentric interval set up and the diapire of connecting inner circle wall and outer lane wall, inner circle wall and outer lane wall top cover have the second fire lid, inner circle wall, outer lane wall, diapire and second fire lid enclose jointly and establish the second gas mixing chamber, the second fire lid with the periphery of first plate body is along directly linking to each other.
In order to provide sufficient secondary air for the first fire cover, the wall surface of the inner ring is enclosed to form an annular cavity, the base transversely penetrates through the annular cavity, and a secondary air channel for communicating the outside with a fire outlet area of the first fire cover is formed between the base and the annular cavity.
Furthermore, the first ejector is arranged on a nozzle seat positioned below the second gas mixing chamber, the first ejector is arranged in the central position of the nozzle seat and extends out of the mounting seat positioned above the nozzle seat, the gas mixing device further comprises a second ejector which is also arranged on the nozzle seat and is arranged at an interval with the first ejector, and a second injection pipe which is independent of the first injection pipe and is arranged in the second gas mixing chamber, an air inlet of the second injection pipe is opposite to the second ejector, and an air outlet is communicated with the second gas mixing chamber. The conventional bottom cup positioned below the panel is eliminated by utilizing the nozzle holder, and the first ejector and the second ejector are directly installed through the nozzle holder, so that the first ejector and the second ejector can directly supplement air through an air channel above the installation holder, the supplement is convenient, and the sufficient air supplement amount can be ensured to promote the full combustion of the combustor; in addition, the conventional bottom cup positioned below the containing mounting seat is eliminated, and meanwhile, the second injection pipe is skillfully arranged in the second gas mixing chamber, so that the overall height of the combustor can be reduced, and the potential safety hazard caused by gas leakage when the second injection pipe is connected by a seam can be avoided; the invention adopts a mode of a plurality of nozzles and a plurality of injection pipes, overcomes the limitation that the injection pipes are limited in the diameter range of the combustor to cause the size of the injection pipes to be still short, ensures the primary air injection capacity of the combustor and realizes large firepower.
In order to prevent the overall height of the combustor from being too high, supplement primary air on the mounting seat and ensure that the amount of the primary air is sufficient, the combustor also comprises a primary air channel, wherein the primary air channel is formed at a position, corresponding to the nozzle seat, on the wall surface of the outer ring and is locally recessed inwards along the radial direction of the air mixing chamber; the inward-concave outer ring wall surface part is directly used as a separating part for separating the primary air channel and the secondary air channel, and the separating part is provided with an air inlet of the second injection pipe and an air inlet of the first injection pipe.
Furthermore, at least one part of the bottom wall of the second air mixing chamber is recessed to form a support leg at other parts of the periphery of the primary air channel, the interval formed between adjacent support legs is communicated with the secondary air channel, and the secondary air channel is independent from the primary air channel. The primary air channel and the secondary air channel on the lower surface of the second air mixing chamber are mutually independent, the local part of the outer ring wall surface is skillfully used as a separating part for separating each other without mutual influence, other separating parts are not required to be additionally arranged, the structure is simple, the integral height of the combustor can be ensured not to be too high, and the structure is compact.
In order to effectively reduce the whole height of the combustor, the second injection pipe is skillfully arranged in the second gas mixing chamber; and a notch for accommodating the second injection pipe is formed in the supporting leg.
In order to further enable the gas pressure in the second gas mixing chamber to be uniform, a pressure stabilizing piece for stabilizing the pressure of the gas in the second gas mixing chamber is arranged in the second gas mixing chamber, and the pressure stabilizing piece can partially extend into the notch.
In order to further facilitate the placement of the pressure stabilizer, the pressure stabilizer comprises a second plate body, a central hole is formed in the center of the second plate body, the hole wall of the central hole protrudes upwards to form a circle of convex wall capable of surrounding the annular cavity, and the outer periphery of the second plate body extends in the horizontal direction and can partially cover the base.
Preferably, the second injection pipe is formed by joining an upper pipe body and a lower pipe body which are adaptive in shape, wherein the lower pipe body is formed by partially sinking the bottom of the supporting leg, and the upper pipe body is formed by sinking the outer periphery of the second plate body from bottom to top.
In order to facilitate the placement of the second fire cover, the second fire cover comprises an annular body, the inner side edge and the outer side edge of the annular top wall of the body respectively extend downwards to form an inner ring wall connected with the inner ring wall surface and an outer ring wall connected with the outer ring wall surface, and a main fire hole is formed in the outer ring wall.
In order to prevent the flame leaving of the main fire hole, the air inlet end of the main fire hole is located at the bottom end of the outer ring wall, the air outlet end of the main fire hole is located at the outer ring wall, a first groove is circumferentially formed in the lower portion of the air outlet end of the main fire hole on the outer ring wall, and a first flame stabilizing hole communicated with the first groove is further formed in the bottom end of the outer ring wall.
Further, the first groove gradually inclines upwards from bottom to top and is intersected with the main fire hole. Thereby forming a V-shaped flame stabilizing channel, not only playing a flame stabilizing effect, but also preventing the overflow liquid from flowing backwards.
In order to prevent spillage from entering the nozzle holder, the outer ring wall extends outwardly to form a protective umbrella that is shielded over the nozzle holder. This design brings the following benefits: the outer ring wall can form a waterproof brim above the nozzle seat to prevent overflow liquid from entering a first ejector and a second ejector on the nozzle seat; the outer ring wall can be made of heat insulating materials so as to prevent flame heat generated by flame coming out from the second fire holes and the second flame stabilizing holes from interfering with primary air supplement of the first ejector and the second ejector on the nozzle seat; and thirdly, the outer ring wall can be used as a 'separation plate' to separate secondary air for supplementing the second fire hole and the second flame stabilizing hole which are communicated with the second air mixing chamber and primary air for supplementing the first ejector and the second ejector on the nozzle seat.
In order to allow the overflowing liquid to flow out of the nozzle holder quickly, the outer ring wall gradually extends downward from top to bottom radially outward of the second air-mixing chamber.
In order to conveniently place the first fire cover and stabilize the inner fire hole, the first fire cover comprises a top cover and an outer ring wall extending downwards from the top cover, a circle of convex ring for the outer ring wall to abut against is correspondingly arranged on the first plate body in a protruding mode, and the outer ring wall is provided with the inner fire hole communicated with the first gas mixing chamber and a second flame stabilizing hole located above the inner fire hole.
In order to further stabilize the inner flame hole, a second groove is circumferentially formed in the outer ring wall below the inner flame hole and below the inner flame hole, and a third flame stabilizing hole communicated with the second groove is formed in the outer ring wall.
Furthermore, the second groove gradually inclines towards the inner fire hole from bottom to top, and a gap is formed between the second groove and the convex ring. The size of the outlet that this clearance formed has decided the steady flame's of third size, can be according to the design demand, decides the export size with, because of the slope setting of second recess makes the gas mixture through striking the burning of flowing out at last, and air velocity is low, also plays fine steady flame effect.
The invention provides a cooker with the above upper air inlet burner to solve the last technical problem, which comprises a panel and is characterized in that: the mounting seat is a part of the panel.
The cooker applying the upper air inlet burner can also comprise a liquid containing disc positioned below the burner, and is characterized in that: the liquid containing disc is used as the mounting seat.
Compared with the prior art, the invention has the advantages that the first ejector pipe is arranged in the base and is provided with the buffer cavity, the length of the first ejector pipe is effectively increased by the buffer cavity, meanwhile, the arrangement of the buffer cavity can ensure that the primary air/gas mixture ejected from the air outlet end of the first ejector pipe has a buffer space, the primary air after being uniformly mixed by the buffer cavity is mixed with the primary air and enters the first gas channel, the gas and the primary air are prevented from being converged in different directions and colliding with each other, the uniformity of mixing of the primary air and the gas is further improved, the suction rate of the primary air is improved, the kinetic energy loss can be effectively reduced, the primary air is uniformly diffused, and the stable and uniform flame can be kept for the fire outlet area of the first fire cover supplied by the first gas mixing chamber, so that the flame of the upper air inlet burner is short, uniform and powerful, the defects of yellow flame, tempering and the like can not occur, and finally, the first gas mixing chamber and the first fire cover are both easy to detach and install structures, so that the cleaning of a user is facilitated.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention with an upper inlet burner resting on a panel;
FIG. 2 is a schematic view of the configuration of an upper inlet air burner at an angle (panel omitted) in an embodiment of the invention;
FIG. 3 is an exploded view of FIG. 2 at one angle;
FIG. 4 is a cross-sectional view at an angle of FIG. 2;
FIG. 5 is a schematic structural view of the gas mixing chamber according to an embodiment of the present invention;
FIG. 6 is a schematic view of a structure of a stabilizer in an embodiment of the present invention;
FIG. 7 is a schematic view of the stabilizer of FIG. 5 with the stabilizer omitted;
FIG. 8 is a schematic view of an angle of a second fire cover in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view of another angle of the second fire cover in accordance with the embodiment of the present invention;
FIG. 10 is a schematic structural diagram of the bottom of the air mixing chamber in the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in FIGS. 1 to 10, the preferred embodiment of the present invention is shown. The upper air inlet burner of the embodiment includes a base 11, the base 11 accommodates a base 11 of a first injection pipe 2, a connector 12 disposed on the base 11, the connector 12 includes a first plate 121, a vertical first gas channel 122 is disposed at a central position of the first plate 121, a peripheral edge 123 of the first plate 121 extends in a horizontal direction and can cover the base 11, and a first fire cover 3 disposed on the connector 12 and formed with a first gas mixing chamber 1 located at a central position between the first plate 121 and the connector 12, the first gas mixing chamber 1 corresponds to the first gas channel 122, in addition, the first injection pipe 2 is transversely disposed in the base 11, in the embodiment, the first injection pipe 2 is a split structure including a lower pipe wall 111 forming the first injection pipe 2 by a local downward recess of the base 11 and an upper pipe wall 112 adapted to a lower shape of the first injection pipe 2, the inner cavity of the first injection pipe 2 is sequentially provided with a transition section 21 and a horn section 22 along the airflow direction from the air inlet 41 to the air outlet 42, the horn section 22 and the lower surface of the first gas channel 122 form a buffer cavity 4, the air outlet end 23 at the upper end of the first injection pipe 2 is in fluid communication with the first gas mixing chamber 1 through the buffer cavity 4, the air inlet end 24 at the lower end of the first injection pipe 2 is adapted with a first ejector 5, the buffer cavity 4 and the inner cavity of the first injection pipe 2 together form a horizontal U-shaped injection channel, the length of the first injection pipe 2 is effectively increased, meanwhile, the buffer cavity 4 is arranged to enable a primary air/gas mixture injected from the air outlet end 7311 of the first injection pipe 2 to have a space, the primary air uniformly buffered by the buffer cavity 4 is mixed with the primary air and enters the first gas channel 122, and the mutual impact of the gas and the primary air caused by the convergence of different directions is avoided, further improved the degree of consistency that primary air and gas mix, when improving the primary air suction rate, can also effectively reduce the kinetic energy loss, make its diffusion even to can keep stable and even flame to the regional of going out of supplying with first fire lid 3 by first gas mixing chamber 1.
In order to enable a user to independently control the central fire and the peripheral fire formed by the combustor, the gas mixing device further comprises a mounting seat 20 and a second gas mixing chamber 6 which is arranged on the mounting seat 20, is positioned at the periphery of the first gas mixing chamber 1 and is independent of the first gas mixing chamber, the second gas mixing chamber 6 comprises an inner ring wall surface 61 and an outer ring wall surface 62 which are concentrically arranged at intervals and a bottom wall 63 connecting the inner ring wall surface 61 and the outer ring wall surface 62, a second fire cover 7 covers the inner ring wall surface 61 and the outer ring wall surface 62, and the inner ring wall surface 61, the outer ring wall surface 62, the bottom wall 63 and the second fire cover 7 are jointly enclosed into the second gas mixing chamber 6. In order to achieve the overall structure compactness of the burner and achieve the connection of the first fire cover 3, the second fire cover 7 and the base 11, the second fire cover 7 is directly connected with the outer periphery edge 123 of the first plate body 121, the transition section 21 of the first injection pipe 2 is provided with a convex block 211 which protrudes upwards towards the outer periphery edge 123 of the first plate body 121, the base 11 and the outer periphery edge 123 of the first plate body 121 penetrate through the convex block 211 through a fastening piece such as a screw to achieve the connection of the base 11 and the first plate body 121, in order to increase the injection length of the first injection pipe 2, the inner ring wall surface 61 of the second gas mixing chamber 6 is surrounded to form an annular cavity 611, the base 11 transversely penetrates through the annular cavity 611 to form a secondary air channel 10 which is communicated with the external fire outlet area of the first fire cover 3 with the annular cavity 611. In addition, the gas mixing device also comprises a nozzle seat 8 arranged below the second gas mixing chamber 6, a first ejector 5 arranged in the center of the nozzle seat 8 and extending out of the mounting seat 20 above the nozzle seat 8, a second ejector arranged on the nozzle seat 8 and spaced from the first ejector 5, and a second injection pipe independent of the first injection pipe 2 and arranged in the second gas mixing chamber 6, wherein the gas inlet 41 of the second injection pipe is opposite to the second ejector, and the gas outlet 42 is communicated with the second gas mixing chamber 6. The conventional bottom cup positioned below the mounting seat 20 is eliminated by utilizing the nozzle seat 8, and the first ejector 5 and the second ejector are directly mounted through the nozzle seat 8, so that the first ejector 5 and the second ejector can directly supplement air through an air channel above the mounting seat 20, the supplement is convenient, and meanwhile, the sufficient air supplement amount can be ensured to promote the full combustion of the combustor; in addition, the conventional bottom cup positioned below the mounting seat 20 is eliminated, and meanwhile, the second injection pipe is skillfully arranged in the second gas mixing chamber 6, so that the overall height of the combustor can be reduced, and the potential safety hazard caused by gas leakage when the second injection pipe is connected by a seam can be avoided; the invention adopts a mode of a plurality of ejectors and a plurality of ejector pipes, overcomes the limitation that the ejector pipes are limited in the diameter range of the combustor to cause the size of the ejector pipes to be still short, ensures the primary air ejection capacity of the combustor and realizes large firepower. In this embodiment, the two second ejectors are respectively a first second ejector 30 and a second ejector 30 ', and are symmetrically arranged at two sides of the first ejector 5, and the two second ejection pipes are correspondingly arranged, respectively a first second ejection pipe 40 and a second ejection pipe 40', so as to prevent the overall height of the burner from being too high, and simultaneously supplement primary air on the mounting seat 20 and ensure sufficient amount of the primary air, the secondary air injection burner further comprises a primary air passage 50, and the primary air passage 50 is formed at a position, corresponding to the nozzle seat 8, on the outer ring wall surface 62 and is locally recessed inwards along the radial direction of the air mixing chamber; the inward concave part of the outer annular wall 32 directly serves as a separating part 620 for separating the primary air channel 50 and the secondary air channel 10, other separating parts do not need to be additionally arranged, the structure is simple, the integral height of the burner is not too high, the structure is compact, and the separating part 620 is provided with an air inlet 41 of the second ejector pipe and an air inlet end 24 of the first ejector pipe 2. In addition, the bottom wall 63 of the second air mixing chamber 6 is recessed at least at one position to form a leg 60 at the other portion of the periphery of the primary air passage 50, in order to avoid the interference between the primary air passage 50 and the secondary air passage 10, the present embodiment is preferably at one position of the opposite side relative to the nozzle holder 8, for this reason, the space formed between the adjacent legs 60 communicates the secondary air passage 10 with the outside, and for preventing the interference when the primary air and the secondary air are supplemented, the secondary air passage 10 and the primary air passage 50 are provided independently of each other.
Simultaneously, because be the cavity in the stabilizer blade 60 that the depressed center formed and not only form the first recess 732601 that holds first second and draw and penetrate pipe 40 and hold the second recess 323602 that the second draws penetrated pipe 40', can also effectively reduce the whole height of combustor, in order to further make the second fire lid 7 even along the gas pressure that the fire hole that circumference set up flowed, set up the steady voltage piece 9 that is used for steady voltage second to mix the interior gas of gas chamber 6 in the second mixes the gas chamber 6, and steady voltage piece 9 can partially stretch into in first recess 732601 and the second recess 323602. Each stabilizer 9 includes a second plate 91, the center of the second plate 91 has a central hole 911, the hole wall of the central hole 911 protrudes upward to form a circle of convex wall 9111 that can surround the annular cavity 611, and the outer periphery of the second plate 91 extends in the horizontal direction and can partially cover the first notch 601 or the second notch 602. For the convenience of processing, the first second injection pipe 40 and the second injection pipe 40 'are formed by joining an upper pipe body 43 and a lower pipe body 44 which are matched in shape, wherein the lower pipe body 44 is formed by partially sinking the bottom of the supporting leg 60, the upper pipe body 43 is formed by recessing the outer periphery of the plate body from bottom to top, and the splicing seams of the first second injection pipe 40 and the second injection pipe 40' are both arranged inside the second gas mixing chamber 6 of the burner, so that the difficulty and the requirement of the sealing process are reduced.
Finally, the second fire cover 7 of the present invention also has particularity, including an annular body, an inner side edge and an outer side edge of an annular top wall 71 of the body respectively extend downwards to form an inner ring wall 72 engaged with the inner ring wall 61 and an outer ring wall 73 engaged with the outer ring wall 62, the outer ring wall 73 is provided with a main fire hole 731, in order to prevent the main fire hole 731 from being out of flame, the air inlet end 7312 of the main fire hole 731 is located at the bottom end of the outer ring wall 73, the air outlet end 7311 of the main fire hole 731 is located at the outer ring wall 73, the outer ring wall 73 is circumferentially provided with a first groove 732 below the air outlet end 7311 of the main fire hole 731, the bottom end of the outer ring wall 73 is further provided with a first flame stabilizing hole 733 communicated with the first groove 732, and the first groove 732 gradually inclines upwards from bottom to top and intersects with the main flame hole 731 to form a V-shaped flame stabilizing channel, so that the flame stabilizing effect is achieved, and meanwhile, liquid overflow can be prevented from flowing backwards. To prevent spillage from entering nozzle holder 8, outer ring wall 73 extends outwardly to form a protective umbrella that shields the nozzle holder 8 from the environment. This design brings the following benefits: the outer ring wall 73 can form a waterproof brim above the nozzle seat 8 to prevent overflow liquid from entering the first ejector 5 and the second ejector on the nozzle seat 8; the outer ring wall 73 can be made of heat insulating materials to prevent the flame heat generated by the flame discharged from the inner flame holes 321 and the second flame stabilizing holes 322 from interfering with the supplement of the primary air of the first injector 5 and the second injector on the nozzle seat 8; third, the outer ring wall 73 can be used as a "partition plate" to separate the secondary air for supplying the secondary air communicated with the inner flame holes 321 and the second flame stabilizing holes 322 of the second air mixing chamber 6 and the primary air for supplying the first injector 5 and the second injector on the nozzle holder 8. In order to allow the overflowing liquid to flow out of the nozzle holder 8 quickly, the outer ring wall 73 extends gradually downward from top to bottom radially outward of the second air-mixing chamber 6. In order to facilitate the placement of the first fire cover 3 and the flame-stabilizing inner fire holes 321, the first fire cover 3 includes a top cover 31 and an outer annular wall 32 extending downward from the top cover 31, a ring of convex rings 1211 for the outer annular wall 32 to abut against is correspondingly disposed on the first plate body 121, and the outer annular wall 32 is provided with the inner fire holes 321 communicating with the first air mixing chamber 1 and the second flame-stabilizing holes 322 located above the inner fire holes 321. In order to further stabilize the inner flame hole 321, a second groove 323 is circumferentially formed below the inner flame hole 321 on the outer ring wall 32 below the inner flame hole 321, a third flame stabilizing hole 324 communicated with the second groove 323 is formed on the outer ring wall 32, wherein the second groove 323 gradually inclines towards the inner flame hole 321 from bottom to top, and a gap 325 is formed between the second groove 323 and the convex ring 1211. The size of the outlet formed by the gap 325 determines the size of the third flame stabilizing flame, and the size of the outlet can be determined according to the design requirement, so that the mixed gas finally flows out for combustion after being impacted due to the inclined arrangement of the second groove 323, the air flow speed is low, and a good flame stabilizing effect is also achieved.
The invention also provides a cooker using the above upper air intake burner, the liquid containing disc 200 is directly used as the mounting base 20, in order to reduce the heat conduction contacting with the panel 201 or the liquid containing disc 200 and improve the heat efficiency, the second air mixing chamber 6 uses the supporting connection mode of the supporting column 600, as mentioned above, the path of the primary air, the gas and the mixed primary air and gas in the burner is as follows, because the primary air is sucked into the first injector 5 of the nozzle base 8 from the outside by the kinetic energy of the gas itself, the premixed primary air and gas enter the first air mixing chamber 1 respectively, and the mixed primary air and gas finally pass through the inner flame hole 321, the second flame stabilizing hole 322 and the third flame stabilizing hole 324 of the first flame cover 3 and are ignited together with the secondary air of the external environment, so as to form the inner ring flame. The gas mixing device also comprises a second fire cover 7 of the outer fire which can enable a user to independently control the outer fire, primary air and fuel gas required by the outer fire are input into the second gas mixing chamber 6 independently of the first injection pipe 2 through a second injection pipe, meanwhile, the second gas mixing chamber 6 is separated from the first gas mixing chamber 1, and in this way, fluid separation of the second gas mixing chamber 6 and the first gas mixing chamber 1 is realized, and then the secondary air and the fuel gas can be independently supplied to allow the user to independently control the inflow of fuel mixture into the first injection pipe 2 and the second injection pipe, if the size of the outer fire and the central fire is adjusted, the first air inlet pipe 100 connected with the first injector and the adjusting valve of the main air inlet pipe 400 connected with the second air inlet pipe 200 and the third air inlet pipe 300 communicated with the first second injector 30 and the second injector 30 ', and the adjusting valve of the main air inlet pipe 400 connected with the second air inlet pipe 200 and the third air inlet pipe 300 are adjusted, and in addition, because the first injector 30 and the second injector 30' and the second injector and the third air inlet pipe 531 are opposite The symmetrical design makes the integral nozzle holder 8 in T shape, which is beneficial to the injection pressure balance of each injector.

Claims (23)

1. An upper intake air burner, characterized by: comprises that
A base (11) housing a first ejector tube (2):
the connecting body (12) is arranged on the base (11) and comprises a first plate body (121), a vertical first gas channel (122) is arranged at the center of the first plate body (121), and the outer periphery (123) of the first plate body (121) extends in the horizontal direction and can cover the base (11);
the first fire cover (3) is arranged on the connecting body (12), and a first gas mixing chamber (1) positioned in the center is formed between the first fire cover and the first gas channel (122) of the connecting body (12);
the gas mixing chamber comprises a buffer cavity (4), the gas outlet end (23) of the first injection pipe (2) is in fluid communication with the first gas mixing chamber (1) through the buffer cavity (4), and the gas inlet end (24) of the first injection pipe (2) is matched with a first ejector (5).
2. The upper intake burner of claim 1, wherein: the first injection pipe (2) is transversely arranged in the base (11), and the buffer cavity (4) is located between the first injection pipe (2) and the first fuel gas channel.
3. The upper intake burner of claim 2, wherein: the first injection pipe (2) and the base (11) are integrally formed, and a gap between the pipe wall of the first injection pipe (2) and the first gas channel (122) forms the buffer cavity (4).
4. The upper intake burner of claim 3, wherein: the inner cavity of the first injection pipe (2) is sequentially provided with a transition section (21) and a horn section (22) along the airflow direction from an air inlet to an air outlet, the horn section (22) and the first fuel gas channel (122) form the buffer cavity (4), the transition section (21) of the first injection pipe (2) is provided with a convex block (211) upwards in the periphery of the first plate body, and the base (11) and the periphery of the first plate body (121) penetrate through the convex block (211) through fasteners to realize connection of the base and the first plate body.
5. The upper intake air burner according to any one of claims 1 to 4, wherein: still including mount pad (20) and set up on mount pad (20) and be located first gas mixing chamber (1) periphery and mutually independent second gas mixing chamber (6), second gas mixing chamber (6) have second fire lid (7) including inner circle wall (61) and outer lane wall (62) that concentric interval set up and diapire (63) of connecting inner circle wall (61) and outer lane wall (62) top cover, inner circle wall (61) and outer lane wall (62) top enclose jointly and establish second gas mixing chamber (6), second fire lid (7) with the periphery of first plate body (121) is directly linked to each other along (123).
6. The upper intake burner of claim 5, wherein: an annular cavity (611) is defined by the inner ring wall surface (61), the base (11) transversely penetrates through the annular cavity (611), and a secondary air channel (10) which is communicated with the outside and the fire outlet area of the first fire cover (3) is formed between the base and the annular cavity (611).
7. The upper intake burner of claim 5, wherein: the first ejector (5) is arranged on a nozzle seat (8) positioned below the second air mixing chamber (6), the first ejector (5) is arranged in the center of the nozzle seat (8) and extends out of a mounting seat (20) positioned above the nozzle seat (8), the first air mixing chamber further comprises second ejectors (30, 30 ') which are also arranged on the nozzle seat (8) and are spaced from the first ejector (5), and second injection pipes (40, 40') which are independent of the first injection pipes (2) and are arranged in the second air mixing chamber (6), wherein air inlets (41) of the second injection pipes (40, 40 ') are opposite to the second ejectors (30, 30'), and air outlets (42) are communicated with the second air mixing chamber (6).
8. The upper intake burner of claim 7, wherein: the secondary air mixing chamber further comprises a primary air channel (50), wherein the primary air channel (50) is formed at a position, corresponding to the nozzle seat (8), on the outer ring wall surface (62) and is locally recessed inwards along the radial direction of the second air mixing chamber (6); the inward recessed outer ring wall surface (62) is directly used as a separating part (620) for separating the primary air channel (50) and the secondary air channel (10), and an air inlet (41) of the second injection pipe and an air inlet (24) of the first injection pipe (2) are formed in the separating part (620).
9. The upper intake burner of claim 8, wherein: at least one part of the bottom wall (63) of the second air mixing chamber (6) is recessed to form a supporting leg (60) at other parts of the periphery of the primary air channel (50), the interval formed between the adjacent supporting legs (60) is communicated with the secondary air channel (10), and the secondary air channel (10) is independent from the primary air channel (50).
10. The upper intake burner of claim 9, wherein: a notch (601, 602) for accommodating the second injection pipe is formed in the supporting leg (60).
11. The upper intake burner of claim 10, wherein: and a pressure stabilizing piece (9) for stabilizing the pressure of the gas in the second gas mixing chamber (6) is arranged in the second gas mixing chamber (6), and the pressure stabilizing piece (9) can partially extend into the notches (601, 602).
12. The upper intake burner of claim 11, wherein: the pressure stabilizer (9) comprises a second plate body (91), a central hole (911) is formed in the center of the second plate body (91), the hole wall of the central hole (911) protrudes upwards to form a circle of convex wall (9111) capable of surrounding the annular cavity (611), and the outer periphery of the second plate body (91) extends in the horizontal direction and can partially cover the notches (601, 602).
13. The upper intake burner of claim 12, wherein: the second injection pipe (40, 40') is formed by combining an upper pipe body (43) and a lower pipe body (44) which are adaptive in shape, wherein the lower pipe body (44) is formed by partially sinking the bottom of the supporting leg 60, and the upper pipe body (43) is formed by sinking the outer periphery of the second plate body (91) from bottom to top.
14. The upper intake air burner according to any one of claims 6 to 13, wherein: the second fire cover (7) comprises an annular body, the inner edge and the outer edge of an annular top wall (71) of the body respectively extend downwards to form an inner ring wall (72) jointed with the inner ring wall surface (61) and an outer ring wall (73) jointed with the outer ring wall surface (62), and main fire holes (731) are formed in the outer ring wall (73).
15. The upper intake burner of claim 14, wherein: the gas inlet end (7312) of main fire hole (731) is located the bottom of outer lane wall (73), the end of giving vent to anger (7311) of main fire hole (731) be located outer lane wall (73), outer lane wall (73) in the end of giving vent to anger (7311) of main fire hole (731) below seted up first recess (732) circumferentially, still seted up on the bottom of outer lane wall (73) with first recess (732) be linked together first flame stabilizing hole (733).
16. The upper intake burner of claim 15, wherein: the first groove (732) is inclined upward gradually from bottom to top and intersects with the main fire hole (731).
17. The upper intake burner of claim 14, wherein: the outer ring wall (73) extends outwards to form a protective umbrella which is shielded above the nozzle seat (8).
18. The upper intake burner of claim 17, wherein: the outer ring wall (73) extends gradually downwards from top to bottom towards the radial direction of the second air mixing chamber (6).
19. The upper intake air burner according to any one of claims 6 to 12, wherein: the first fire cover (3) comprises a top cover (31) and an outer annular wall (32) extending downwards from the top cover (31), a circle of convex ring (1211) for the outer annular wall (32) to abut against is correspondingly arranged on the first plate body (121) in a protruding mode, and an inner fire hole (321) communicated with the first gas mixing chamber (1) and a second flame stabilizing hole (322) located above the inner fire hole (321) are formed in the outer annular wall (32).
20. The upper intake burner of claim 19, wherein: the outer ring wall (32) is circumferentially provided with a second groove (323) below the inner fire hole (321), and the outer ring wall (32) is provided with a third flame stabilizing hole (324) communicated with the second groove (323).
21. The upper intake burner of claim 20, wherein: the second groove (323) is gradually inclined towards the inner fire hole (321) from bottom to top, and a gap (325) is formed between the second groove and the convex ring (1211).
22. Cooking hob with an upper inlet air burner according to any one of the claims 5 to 21, comprising a panel (201), characterized in that: the mounting seat (20) is a part of the panel (201).
23. Cooking hob with an upper inlet air burner according to any one of the claims 5 to 21, comprising a drip tray (200) located below the burner, characterized in that: the liquid containing tray (200) is used as the mounting seat (20).
CN201811290447.1A 2018-10-31 2018-10-31 Upper air inlet burner and cooker applying same Pending CN111121033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811290447.1A CN111121033A (en) 2018-10-31 2018-10-31 Upper air inlet burner and cooker applying same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811290447.1A CN111121033A (en) 2018-10-31 2018-10-31 Upper air inlet burner and cooker applying same

Publications (1)

Publication Number Publication Date
CN111121033A true CN111121033A (en) 2020-05-08

Family

ID=70494449

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811290447.1A Pending CN111121033A (en) 2018-10-31 2018-10-31 Upper air inlet burner and cooker applying same

Country Status (1)

Country Link
CN (1) CN111121033A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113685814A (en) * 2021-07-21 2021-11-23 宁波方太厨具有限公司 Air mixing chamber and upper air inlet burner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113685814A (en) * 2021-07-21 2021-11-23 宁波方太厨具有限公司 Air mixing chamber and upper air inlet burner

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