CN208804673U - A kind of cooker burner - Google Patents

Abstract

The utility model relates to a kind of cooker burners, include pedestal, which has cavity opening up, for accommodating at least one the first injector；Setting is on the base, and the first injection channel being connect with pedestal and the first injector phase fluid, primary air channel on the base is set, fire cover and transmission channel on pedestal are set, it is characterized in that first injection channel includes centrally located central lumen and the periphery chamber around central lumen, the entrance of central lumen is opposite with the first injector, and periphery chamber is used for evenly around the primary air in central lumen periphery, compared with prior art, the utility model has the advantage of the sandwich designs in the first injection channel, the combustion gas of central lumen can be preferably set more directly to carry out the mixing of primary air with periphery chamber, further increase the uniformity that primary air is evenly arranged on central lumen periphery, while improving primary air inhalation rate, the yellow flame that is easy to appear and firepower are powerless when avoiding burning Phenomenon.

Description

A kind of cooker burner

Technical field

The utility model relates to the combustions of the kitchen range of the burner of gas cooker more particularly to a kind of twin-channel upper wind inlet type of band Burner.

Background technique

Currently, for example platform-type gas furnace of top intaking air gas combustion stove and embedded gas stove on the market, wherein embedded combustion gas The burner of furnace is single channel top air inlet structure, and combustion gas is entered by a channel, controls combustion gas firepower, Wu Fadan by valve Solely use interior pyrosphere combustion gas.To solve single channel, that is, no independent central flame, and the problem that thermic load is small, one application No. is It is simple that the Chinese patent of CN98120026.5 (Publication No. CN1212348A) discloses a kind of structure, can separately adjustable central flame With the gas burner of outer ring fire, i.e., this burner is typically provided a central-injection device and an outer ring injector, but this Kind gas burner finds that its combustibility is not ideal enough in an experiment, and primary air is supplied to flame of centre head and external flame The speed of head is uneven, and since the air-breathing of central-injection device and outer ring injector is uneven, combustion gas and primary air it is incomplete Mixing will also result in central flame and the length of flame of outer ring fire is different, meanwhile, ejector pipe is limited by upper inlet wind type burner height, It cannot be made too long, cause channel resistance big, easily occur yellow flame when power is big, especially in small fire gear, Huang Yan is become apparent from.

And the Chinese utility model of a Patent No. ZL00233192.6 (Authorization Notice No. CN2427756Y) is to solve The above problem and a solution provided are as follows: subaisle is added by former single main channel, subaisle is made to lead directly to internal combustion circle, Gas mixing chamber can be entered simultaneously by forming two-way combustion gas, and when burning can also close main channel, exclusive use subaisle, this structure The stove made is as needed when in use, and interior outer burning ring can be opened simultaneously, can also close outer burning ring, and interior pyrosphere is used alone, and Firepower is adjusted by switch control, can achieve the purpose that cooking dish and saves combustion gas, reduces pollution, but it is in main channel A subaisle is only added on side, and main channel corresponds to outer burning ring gas injector, and subaisle corresponds to inner-ring fire gas injector, and pair is logical Road is with respect to main channel eccentric setting, so that the gas pressure of fire hole outflow circumferentially arranged in the corresponding small fire cover of subaisle Power is uneven, and the flame so as to cause the inner-ring fire of small fire cover generation is uneven.

It is non-uniform in order to avoid leading to the problem of flame, a such as Patent No. ZL201420414274.0 (Authorization Notice No. A upper inlet wind type burner is referred to for the Chinese utility model of CN204026673U) comprising the noumenal seat being fixed on bottom case, Wherein bottom case is totally-enclosed, bottom not aperture, and there are three injector, two outer ring injectors and an inner ring injections on noumenal seat Device, noumenal seat are fixed with panel, and after ontology and noumenal seat installation, the center line of injector corresponds to outer ring venturi, inner ring text mound In center line, since the high-velocity fluid that injector sprays is easy to produce negative pressure so that air is involved at venturi, this Partial air does not flow into internal body, directly obtains and is transported near injector from atmosphere, and two outer ring injectors are located at The two sides of inner ring injector, the corresponding external ring fire cover domain of two outer ring injectors be connect, once in two outer ring injectors One of them is blocked, then the department of fuel gas branch that another outer ring injector sprays flows backward what entrance was blocked by external ring fire cover Blast tube corresponding to outer ring injector easily causes explosion if the combustion gas gathered is excessive.

Utility model content

A technical problem to be solved in the utility model is provided a kind of effective for above-mentioned state of the art Improve the cooker burner of primary air and the combustion gas mixing uniformity.

Another technical problem to be solved in the utility model is to provide one kind not for above-mentioned state of the art The cooker burner of yellow flame and firepower inability easily occurs.

Another technical problem to be solved in the utility model is to provide one kind not for above-mentioned state of the art Easily because the combustion gas that injector blocking occurs is flowed backward, so as to cause the cooker burner of explosion.

Technical solution adopted by the utility model to solve the above technical problems is as follows: the cooker burner, includes:

Pedestal has opening up cavity, and the central location of the cavity is provided with the first injector；

Connector is arranged on the pedestal, includes plate body, and the central location of the plate body has vertical first Injection channel, the outer periphery of the plate body then extend in the horizontal direction and can cover the cavity；

Primary air channel, along the connector circumferentially, interval setting, for being connected to the cavity and extraneous with by one Secondary air is out of extraneous the cavity for introducing pedestal；

Fire cover is arranged on the connector, and is formed with centrally located first between the connector and mixes Gas chamber and positioned at periphery the second mixing chamber；First mixing chamber corresponds to first injection channel, primary for mixing Air and combustion gas；And

Transmission channel, for being transmitted to mixed primary air and combustion gas from first mixing chamber to the second mixed gas Room；

It is characterized in that

First injection channel is sandwich, includes centrally located central lumen and around the outer of central lumen All chambers；The lower inlet of the central lumen is connected with the pedestal cavity and, institute opposite with first injector The upper end outlet for stating central lumen is connected with first mixing chamber；The lower ending opening of the periphery chamber and the base Seat cavity is connected, and the upper end closed of the periphery chamber is cecum.

In tube structure open up and down, the cylinder includes interval setting from inside to outside in first injection channel Internal perisporium and periphery wall, the internal perisporium separates the cylinder into the central lumen and periphery chamber, also, the inner circumferential Wall upper end upper edge mutually forms closed end in succession with periphery wall upper edge.By means of the closed end, can preferably make The combustion gas of chambers of the heart room more directly carries out the mixing of primary air with periphery chamber, avoids combustion gas and primary air by different directions Converge and mutually hit, further increase primary air be evenly arranged on central lumen periphery the uniformity, improve primary air inhale While entering rate, moreover it is possible to effectively reduce kinetic energy rejection.

Further, ora terminalis is lower than ora terminalis under the peripheral wall of the central lumen under the periphery wall of the periphery chamber.This sets Meter can make the downstream of center cavity first carry out the premix of primary air and combustion gas, then by means of obtaining in the first mixing chamber itself Low pressure caused by Venturi effect, primary air and combustion gas after premix are sucked into after the first mixing chamber to carry out second again Mixing, effectively increase primary air and the combustion gas mixing uniformity.

In order to further improve the mixture homogeneity of primary air and combustion gas, have from bottom to top inside the fire cover Groove that is recessed and supplying first injection channel to protrude into, the groove and the plate body, which enclose to set, constitutes first mixing chamber, described Radial venturi chamber is surrounded between groove roof lower surface and the closed end in the first injection channel.Meanwhile the radial direction venturi The height of burner can also be effectively reduced in chamber.It can certainly be such as axial using the same mixing chamber with Venturi effect chamber Venturi chamber.

Radial venturi chamber can be formed in the following way, and the closed end in the first injection channel includes horizontally disposed First end face and along first end face lower edge inclined second end face gradually downward from inside to outside, first end face and cavity top Under the vertical distance D1 of wall lower surface, second end face upper edge and the vertical distance D2 of groove roof lower surface and second end face The vertical distance D3 of edge and groove roof lower surface satisfaction has following relationship: D1 < D2 < D3, to constitute radial venturi chamber.

Further, the angle α between the first end face and the second end face is 5 °~15 °.The big then furnace of angle Head is too high, and burner volume increases, it will be difficult to meet the requirement of especially embedded gas range, if angle too small, then air-flow hinders Power is big, unobvious to the effect for reducing gas-flow resistance and reduction cavity volume.

With crossing a step, the fire cover includes that the internal ring portion of concentric spacing setting and outer portion, the groove are then arranged The inside of internal ring portion, the top of the internal ring portion are higher by the top of the outer portion, and the internal ring portion includes upward projection Annular wall and the main cover plate being covered on above the annular wall, circumferentially compartment of terrain forms radial direction to the annular wall Main fiery slot and steady flame slot, and be respectively formed main fire hole and stable flame hole with the cooperation of the periphery wall of main cover plate.

Wherein the constituted mode of the second mixing chamber can be following mode: the outer portion includes what concentric spacing was arranged Inner ring wall and outer ring wall and the bottom wall for connecting inner ring wall and outer ring wall, the inner ring wall and outer ring wall top It is covered with auxiliary coverplate, the inner ring wall, outer ring wall, bottom wall and auxiliary coverplate enclose jointly is set as second mixing chamber.

Further, circumferentially compartment of terrain forms the main fiery slot of radial first for the upper surface of the outer ring wall With the second main fiery slot, the groove depth of the first main fiery slot is greater than the groove depth of the second main fiery slot.The fluting of first main fiery slot is deep Degree is greater than the groove depth of the second main fiery slot, itself can form the supplement gap of auxiliary air.

Further, corresponding auxiliary air hole is distributed with circumferentially spacedly in the periphery of the main fire hole and stable flame hole, The auxiliary air hole is provided on the interconnecting piece between the inner ring wall and the annular wall, and each auxiliary air hole With the air communication below the fire cover.

The setting in primary air channel can be using any extraneous pipe with pedestal cavity of connection in the prior art The setting in road, same secondary-air passage can also and auxiliary air hole extraneous using any connection in the prior art Pipeline, the utility model be from the structure of burner simply and it is compact from the point of view of, primary air channel and auxiliary air The under type such as that is formed by channel is formed, and the auxiliary air hole is downwardly convex to be equipped with annular wall, and the annular wall is surrounded by ring Shape chamber, the connector circumferentially are equipped with multiple radial, logical for being connected to the annular compartment and extraneous auxiliary air Road, the primary air channel are again provided with multiple, and are circumferentially arranged radially along the connector, the auxiliary air Channel and the primary air channel spacing are arranged.

Secondary-air passage and primary air channel spacing are arranged, and can be spaced in the following way: the connector Plate body lower surface extend downwardly along the plate body circumferentially, at least a pair of of baffle for being arranged radially, put in each pair of baffle It sets in the state of on the pedestal, the primary air channel that the gap between each pair of baffle and pedestal is then constituted Air intake.

Further, the inner ring wall of the outer portion opens up jagged, the annular week of the notch and the annular compartment The cavity surrounded between wall interlinks, and the notch and the cavity collectively form the transmission channel.

In order to enable the periphery fire that central flame and outer portion that the internal ring portion that user is individually controlled burner is formed are formed, The annular wall of the internal ring portion and cover between main cover plate formed separated with first mixing chamber and the second mixing chamber phase fluid Third mixing chamber, also accommodate at least one second injector in the cavity of the pedestal, and be provided on the pedestal With at least one second injection channel independently of first injection channel, second injection channel and the pedestal and the The connection of two injector phase fluids.The fuel mixture of the third mixing chamber is directly supplied by the second injection channel, and with One mixing chamber and the separation of the second mixing chamber fluid, thus can individually supply it.

Further, the fire cover roof offers at least one through-hole in enclosing in the annular wall of internal ring portion, the through-hole Downwardly convex to be equipped with convex wall, the chamber that the convex wall surrounds constitutes the second injection passageway fuel mixture into described the The top opening of three mixing chambers.Certain the utility model can cooperate to define the second injection channel and third mixing chamber, edge Pedestal axial direction extends and is in convergence-diffusion tubular structure, and tubular structure portion is formed in fire cover, base in part It is formed in seat.

Conceive by above-mentioned utility model, second injection channel is axial Venturi tube.

The utility model is to solve third technical problem and provide a kind of cooker burner, is arranged on the fire cover roof There is at least one demarcation plate, which is separated at least two separate chambers, each separate chamber for the third mixing chamber It is connected to corresponding second injection channel.The formation of the separate chamber can effectively prevent because of one of them the second spray The blocking of emitter and combustion gas reverse irrigation occurs, the phenomenon that so as to cause exploding.

It is controlled to meet burner combustion gas firepower by valve regulated, can be used simultaneously inside and outside ring fire, also can be used alone Interior ring fire, especially in inside, the flame Flame of center and external circumferencial direction have turbulent flow and interference substantially, goes back simultaneously With the cooking function of small fire, it is additionally provided with partition between the annular wall and main cover plate of the upward projection of internal ring portion, it is described The top surface of partition offers at least one for the venthole through the third mixing chamber mixed fuel mixture outflow, described Partition lower surface and internal ring portion upper surface have the first gap, have between second between the partition upper surface and the main cover plate Gap, second gap constitute the crater of internal ring portion.

In order to realize partition, the structure cooperation of main cover plate, the central location of the internal ring portion upper surface is upward convex to be equipped with one Flange collar is enclosed, the partition has the mounting hole that can be shelved in the flange collar, the outer ledge of the partition and institute in corresponding position It states annular wall to offset, the upper surface of the partition is provided at least two for supporting the convex of the main cover plate circumferentially spacedly Rib, the main cover plate are then extended downwardly in the position of corresponding flange collar and can be adapted to across the mounting hole and with the flange collar Convex annular wall.

Compared with prior art, the utility model has the advantage of the sandwich designs in the first injection channel, are located at outer The periphery chamber of layer can make the primary air into the chamber be more evenly distributed in the periphery of central lumen, thus the Can preferably make under the action of one injector the combustion gas of central lumen more directly with the primary air after the chambers uniform of periphery The mixing for carrying out primary air, avoids combustion gas and primary air from mutually being hit by converging for different directions, further improves While the uniformity of primary air and combustion gas mixing, raising primary air inhalation rate, moreover it is possible to kinetic energy rejection is effectively reduced, thus So that the flame of upper inlet wind type burner is short, uniform and strong, the defects of being not in Huang Yan, be tempered.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment；

Fig. 2 is the decomposition texture schematic diagram of Fig. 1；

Fig. 3 is the cross-sectional view of mono- angle of Fig. 1；

Fig. 4 be in Fig. 3 at A in enlarged diagram view；

Fig. 5 is the structural schematic diagram in the first injection channel and the second injection channel in the utility model embodiment；

Fig. 6 is the cross-sectional view of another angle of Fig. 1；

Fig. 7 is the structural schematic diagram of one angle of fire cover in the utility model embodiment；

Fig. 8 is the structural schematic diagram of another angle of fire cover in the utility model embodiment.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

It is the most preferred embodiment of the utility model as shown in Fig. 1~8, this cooker burner is applicable to traditional enterprising Wind combustor be equally applicable to as Europe Italian saba husband burner, the cooker burner include with it is opening up, The central location of the cavity 11 is provided with the first injector 12, and the connector 2 on pedestal 1 is arranged in, and includes plate body 21, The central location of plate body 21 has the first vertical injection channel 3, and the outer periphery 211 of the plate body 21 then extends in the horizontal direction And cavity 11 can be covered；And along connector 2 circumferentially, interval setting, for being connected to cavity 11 and extraneous with will be primary empty Gas is from the primary air channel 4 in the extraneous cavity 11 for introducing pedestal 1；It further include the fire cover 5 being arranged on connector 2, it should The first centrally located mixing chamber 514 is formed between fire cover 5 and connector 2 and positioned at the second peripheral mixing chamber 525；First Mixing chamber 514 corresponds to the first injection channel 3, for mixing primary air and combustion gas；It further include having mixed primary sky Gas and combustion gas are transmitted to the transmission channel 6 to the second mixing chamber 525 from the first mixing chamber 514, in order to effectively improve primary air With the combustion gas mixing uniformity, the first injection channel 3 be sandwich, including centrally located central lumen 311 and surround center The lower inlet of the periphery chamber 312 of chamber 311, central lumen 311 be connected with pedestal cavity 11 and with the first injector 12 Relatively, the upper end outlet of central lumen 311 is connected with the first mixing chamber 514；The lower ending opening and pedestal of periphery chamber 312 Cavity 11 is connected, and the upper end closed of periphery chamber 312 is cecum.

In the present embodiment, in tube structure open up and down, cylinder includes to be spaced from inside to outside in the first injection channel 3 The internal perisporium 31 and periphery wall 32 of setting, internal perisporium 31 separate the cylinder into centrally located central lumen 311 and around centers The periphery chamber 312 of chamber 311, also, 31 upper edge of internal perisporium mutually forms closed end in succession with 32 upper edge of periphery wall 33, by means of the closed end 33, the combustion gas of central lumen 311 can preferably be made more directly to carry out one with periphery chamber 312 The mixing of secondary air avoids combustion gas and primary air from mutually being hit by converging for different directions, further increases primary air While being evenly arranged on the uniformity of 311 periphery of central lumen, improve primary air inhalation rate, moreover it is possible to effectively reduce kinetic energy rejection. Meanwhile the lower ora terminalis of periphery wall 32 of periphery chamber 312 is lower than ora terminalis under the peripheral wall of central lumen 311.The design can make in The downstream of the chambers of the heart first carries out the premix of primary air and combustion gas, then the venturi by means of obtaining in the first mixing chamber 514 itself Low pressure caused by effect, primary air and combustion gas after premix be sucked into after the first mixing chamber 514 carry out again it is secondary Mixing, effectively increases primary air and the combustion gas mixing uniformity.

Specifically, the setting of the first mixing chamber 514 is preferably to be formed inside fire cover 5, has recessed from bottom to top and supplies The plate body 21 of the groove 511 that first injection channel 3 is protruded into, the groove 511 and connector 2 constitutes the first mixing chamber 514, groove Radial venturi chamber 60 is surrounded between 511 roof lower surfaces and the closed end 33 in the first injection channel 3.The radial direction venturi chamber 60 is logical as under type is formed, and the closed end 33 in the first injection channel 3 includes horizontally disposed first end face 331 and edge 331 lower edge of first end face inclined second end face 332 gradually downward from inside to outside, under first end face 331 and 511 roof of groove The vertical distance D1 on surface, 332 upper edge of second end face and 511 roof lower surface of groove vertical distance D2 and second end face The vertical distance D3 of 332 lower edges and 511 roof lower surface of groove satisfaction has following relationship: D1 < D2 < D3, to constitute radial direction Venturi chamber 60.More preferably, the angle α between the first end face 331 and second end face 332 of closed end 33 is 5 °~15 °. Since the first injection channel 3 is directly to be transitioned into level from vertical 90 ° to set with the radial venturi chamber 60 of the first mixing chamber 514 It sets, eliminates other interface components, to reduce local resistance loss, while the angle setting of the angle α can allow combustion gas and one Secondary air mixture reduces drag losses, more smooth, the smooth transition of injection, the angle α when being ejected into the second mixing chamber 525 Under the premise of guaranteeing to effectively reduce local resistance loss, do not allow also to easily cause the volume of ejector pipe excessively huge.In addition, the The constituted mode of two mixing chambers 525 can be following mode: fire cover 5 includes the internal ring portion 51 and outer portion of concentric spacing setting 52, the inside of internal ring portion 51 is then arranged in groove 511, and the top of internal ring portion 51 is higher by the top of outer portion 52, and internal ring portion 51 wraps It includes the upward convex annular wall 512 set and is covered on the main cover plate 513 of 512 top of annular wall, annular wall 512 is circumferentially square Radial main fiery slot 5121 and steady flame slot 5122 are formed to compartment of terrain, and cooperate shape respectively with the periphery wall of main cover plate 513 32 At main fire hole and stable flame hole.Outer portion 52 includes the inner ring wall 521 that concentric spacing is arranged and outer ring wall 522 and connection Auxiliary coverplate is covered with above the bottom wall 523 of inner ring wall 521 and outer ring wall 522, inner ring wall 521 and outer ring wall 522 524, inner ring wall 521, outer ring wall 522, bottom wall 523 and auxiliary coverplate 524 enclose jointly is set as the second mixing chamber 525.Together When, circumferentially compartment of terrain forms the main fiery slot 5221 of radial first and the second main fire for the upper surface of outer ring wall 522 Slot 5222, the groove depth of the first main fiery slot 5221 are greater than the groove depth of the second main fiery slot 5222, itself can form secondary sky The supplement gap of gas.

For the central flame supplement auxiliary air formed to internal ring portion 51, the periphery of main fire hole and stable flame hole is circumferentially spaced Corresponding auxiliary air hole 7 is distributed in ground, and auxiliary air hole 7 is provided with the interconnecting piece between inner ring wall 521 and annular wall 512 On, and each auxiliary air hole 7 is connected to the secondary-air passage 40 of 5 lower section of fire cover, and which also has One cleverly acts on a part for constituting transmission channel 6, specifically, auxiliary air hole 7 is downwardly convex to be equipped with annular peripheral wall 71, Annular peripheral wall 71 is surrounded by annular compartment, and pedestal 1 circumferentially is equipped with multiple radial directions, for being connected to annular compartment and extraneous two Secondary air duct 40, while the inner ring wall 521 of outer portion 52 opens up jagged 5211, the ring of the notch 5211 and annular compartment The cavity surrounded between shape peripheral wall 72 interlinks, and notch 5211 and cavity collectively form transmission channel 6.Similarly primary air is logical Road 4 is also equipped with multiple, and to be circumferentially arranged radially along pedestal 1, secondary-air passage 40 passes through with primary air channel 4 21 lower surface of plate body of connector 2 extend downwardly along plate body 21 circumferentially, at least a pair of of baffle 212 for being arranged radially is spaced Open, in the state that each pair of baffle 212 is shelved on pedestal 1, the gap between each pair of baffle 212 and pedestal 1 then constitute one The air intake of secondary air duct 4.The meaning of the separation is effectively to separate primary air and secondary-air passage 40, avoids phase Influence between mutually.

In order to enable central flame and outer portion 52 that the internal ring portion 51 that user is individually controlled burner is formed formed it is outer Zhou Huo, the annular wall 512 of internal ring portion 51 and cover between main cover plate 513 formed with the first mixing chamber 514 and the second mixing chamber The third mixing chamber 8 of 525 phase fluids separation, also accommodates at least one second injector 9, and base in the cavity 11 of pedestal 1 It is provided on seat 1 and at least one second injection channel 10 independently of the first injection channel 3, the second injection channel 10 and base Seat 1 is connected with 9 phase fluid of the second injector.The fuel mixture of the third mixing chamber 8 is directly carried out by the second injection channel 10 Supply, and separated with the first mixing chamber 514 and 525 fluid of the second mixing chamber, thus individually it can be supplied, this implementation In example there are two the settings of the second injection channel 10, it is symmetricly set on the two sides in the first injection channel 3 circumferentially respectively, while Reach and central flame and periphery fire is made to go out the uniform mesh of fire.In addition 5 roof of fire cover in enclosed in the annular wall 512 of internal ring portion 51 also Corresponding two through-holes 50 are offered, through-hole 50 is downwardly convex to be equipped with convex wall 501, and the chamber that convex wall 501 surrounds constitutes second and draws Penetrate the top opening that 10 fuel mixture of channel enters third mixing chamber 8.

In order to reinforce ejector capacity, the utility model can limit in the second injection channel 10 and third mixing chamber 8 jointly , extend along 1 axial direction of pedestal and be in the axial direction Venturi tube in such as axial Venturi tube of convergence-diffusion tubular structure Partial opening forms the chamber that i.e. corresponding 50 convex wall 501 of through-hole surrounds in fire cover 5, and partially being formed in connector 2 is pair Answer the second injection channel 10.To avoid being not easy blocking the combustion gas occurred reverse irrigation because of any second injector, so as to cause explosion Cooker burner corresponds to the setting of two through-holes 50, and point for extending radially through the setting of flange collar 510 is provided on 5 roof of fire cover Third mixing chamber 8 is separated into two separate chambers such as the first separate chamber 201 and the second independence by partition 20, the demarcation plate 20 201 ' of chamber, the first separate chamber 201 and 201 ' of the second separate chamber are connected to corresponding second injection channel 10.Separately Outside, it is additionally provided with partition 30 between the annular wall 512 and main cover plate 513 of the upward projection of internal ring portion 51, the top surface of partition 30 opens up There are multiple ventholes 301 for flowing out through the mixed fuel mixture of third mixing chamber 8,30 lower surface of partition and internal ring portion 51 upper surfaces have the first gap 302, have the second gap 303, the second gap between 30 upper surface of partition and main cover plate 513 303 constitute the crater of internal ring portion 51.Since partition 30 has the function of further decreasing combustion gas speed, thus the center of inner ring Flame and the small fire formed by crater are more uniform, to keep the bottom of a pan heating more uniform.Due to using such structure, When in use, cooperate with sector gas valve, can not only make the internal ring portion 51 of fire cover 5, outer portion 52 while burning, can also have Selection internal ring portion 51 individually burn simultaneously by burning, two ring fires of internal ring portion 51, and it is different that different firepower can satisfy different culinary arts The different phase of food and cooking food is accepted or rejected, easy to use.Partition 30 in order to facilitate the installation of, 51 upper surface of internal ring portion Central location it is upward convex be equipped with a circle flange collar 510, partition 30 has the installation that can be shelved in the flange collar 510 in corresponding position Hole 304, outer ledge and the annular wall 512 of partition 30 offset, and the upper surface of partition 30 is provided at least two circumferentially spacedly Item is used to support the fin 305 of main cover plate 513, and main cover plate 513 has then been extended downwardly and can have been passed through in the position of corresponding flange collar 510 Mounting hole 304 and the convex annular wall 5130 being adapted to flange collar 510.

With reference to Fig. 6, as described above, primary air, combustion gas and mixed primary air and combustion gas are in burner internal Path (referring to dotted arrow) is as follows, due to first the 12 to the first injection of injector channel 3 and with radial Venturi effect Primary air is sucked base from the external world by primary air channel 4 by low pressure caused by the gas injection in the first mixing chamber 514 (for simplicity, a first injection channel 3 and transmission channel 6 are only shown) in the periphery chamber 312 of the cavity 11 of seat 1, so Afterwards by the kinetic energy of combustion gas itself by primary air into central lumen 311, carry out primary air and combustion gas premix, finally exist The radial Venturi effect chamber of first mixing chamber 514 further mixes and enters the second mixing chamber 525, mixing by transmission channel 6 Rear primary air and combustion gas finally by the first main fiery slot 5121 of outer portion 52 and the second main fiery outflow of slot 5122 and with it is outer The auxiliary air of portion's environment is ignited together, forms periphery fire.And fire cover 5 further includes having the center that can enable users to individually control Fire, primary air and combustion gas needed for central flame are input to third independently of the first injection channel 3 by the second injection channel 10 In mixing chamber 8, meanwhile, third mixing chamber 8 is separated with the first mixing chamber 514 and the second mixing chamber 525, realizes second by this method The separation of the fluid of mixing chamber 525 and third mixing chamber 8, then can individually supply it, to allow user individually to control System enters the inflow of fuel mixture in the first injection channel 3 and the second injection channel 10, to adjust periphery fire and central flame Size, adjust and be connected to the regulating valve of input channel inlet end.

Claims (19)

1. a kind of cooker burner, includes:

Pedestal (1) has opening up cavity (11), and the central location of the cavity (11) is provided with the first injector (12)；

Connector (2) is arranged on the pedestal (1), includes plate body (21), the central location of the plate body (21) has The first vertical injection channel (3), the outer periphery (211) of the plate body (21) then extend in the horizontal direction and can cover residence State cavity (11)；

Primary air channel (4), along the connector (2) circumferentially, interval setting, it is the cavity (11) and extraneous for being connected to It is interior with the cavity (11) that primary air is introduced pedestal (1) from the external world；

Fire cover (5) is arranged on the connector (2), and is formed between the connector (2) centrally located the One mixing chamber (514) and positioned at periphery the second mixing chamber (525)；First mixing chamber (514) corresponds to described first and draws Channel (3) are penetrated, for mixing primary air and combustion gas；And

Transmission channel (6), for being transmitted to mixed primary air and combustion gas from first mixing chamber (514) to second Mixing chamber (525)；

It is characterized in that

First injection channel (3) is sandwich, includes centrally located central lumen (311) and around central lumen (311) periphery chamber (312)；The lower inlet of the central lumen (311) be connected with the pedestal cavity (11) and Relatively with first injector (12), the upper end outlet of the central lumen (311) and described the first mixing chamber (514) phase Connection；The lower ending opening of the periphery chamber (312) is connected with the pedestal cavity (11), the periphery chamber (312) Upper end closed be cecum.

2. cooker burner according to claim 1, it is characterised in that: first injection channel (3) is in spacious up and down Mouthful tube structure, the cylinder includes spaced internal perisporium (31) and periphery wall (32) from inside to outside, the inner circumferential Wall (31) separates the cylinder into the central lumen (311) and periphery chamber (312), also, the internal perisporium (31) upper end Edge mutually forms closed end (33) in succession with periphery wall (32) upper edge.

3. cooker burner according to claim 1, it is characterised in that: the periphery wall (32) of the periphery chamber (312) Lower ora terminalis is lower than ora terminalis under the peripheral wall of the central lumen (311).

4. cooker burner according to claim 2, it is characterised in that: have inside the fire cover (5) it is recessed from bottom to top, And for the groove (511) that first injection channel (3) are protruded into, the groove (511) and the plate body (21) are enclosed and are set described in composition First mixing chamber (514) encloses between groove (511) the roof lower surface and the closed end (33) in the first injection channel (3) Radially venturi chamber (60).

5. cooker burner according to claim 4, it is characterised in that: the closed end in first injection channel (3) (33) include horizontally disposed first end face (331) and incline gradually downward from inside to outside along first end face (331) lower edge Oblique second end face (332), it is the vertical distance D1 of the first end face (331) and the groove (511) roof lower surface, described The vertical distance D2 and the second end face (332) of second end face (332) upper edge and the groove (511) roof lower surface The vertical distance D3 of lower edge and the groove (511) roof lower surface satisfaction has following relationship: D1 < D2 < D3, to constitute institute The radial venturi chamber (60) stated.

6. cooker burner according to claim 5, it is characterised in that: the first end face (331) and the second end Angle α between face (332) is 5 °~15 °.

7. cooker burner according to claim 4, it is characterised in that: the fire cover (5) includes concentric spacing setting Internal ring portion (51) and outer portion (52), the groove (511) be then arranged in the inside of internal ring portion (51), the internal ring portion (51) Top be higher by the tops of the outer portion (52), the internal ring portion (51) include upward projection annular wall (512) and The main cover plate (513) being covered on above the annular wall (512), circumferentially compartment of terrain forms the annular wall (512) There is radial main fiery slot (5121) He Wenyan slot (5122), and is respectively formed master with the cooperation of the periphery wall (32) of main cover plate (513) Fire hole and stable flame hole.

8. cooker burner according to claim 7, it is characterised in that: the outer portion (52) includes that concentric spacing is set The bottom wall of the inner ring wall (521) and outer ring wall (522) and connection inner ring wall (521) and outer ring wall (522) set (523), auxiliary coverplate (524), the inner ring wall are covered with above the inner ring wall (521) and outer ring wall (522) (521), outer ring wall (522), bottom wall (523) and auxiliary coverplate (524) enclose jointly is set as second mixing chamber (525).

9. cooker burner according to claim 8, it is characterised in that: the upper surface of the outer ring wall (522) along Circumferencial direction compartment of terrain forms the main fiery slot (5221) of radial first and the second main fiery slot (5222), the first main fiery slot (5221) Groove depth be greater than the groove depth of the second main fiery slot (5222).

10. cooker burner according to claim 8, it is characterised in that: the periphery of the main fire hole and stable flame hole is along week Be distributed with corresponding auxiliary air hole (7) to compartment of terrain, the auxiliary air hole (7) be provided with the inner ring wall (521) and On interconnecting piece between the annular wall (512), and each auxiliary air hole (7) with the air below the fire cover (5) Connection.

11. cooker burner according to claim 10, it is characterised in that: the auxiliary air hole (7) is downwardly convex to be equipped with Annular peripheral wall (71), the annular peripheral wall (71) are surrounded by annular compartment, and the connector (2) circumferentially is equipped with multiple diameters To, for being connected to the annular compartment and extraneous secondary-air passage (40), the primary air channel (4) is again provided with It is multiple, and be circumferentially arranged radially along the connector (2), the secondary-air passage (40) and the primary air channel (4) interval setting.

12. cooker burner according to claim 11, it is characterised in that: plate body (21) following table of the connector (2) Be extended with downwards along the plate body (21) circumferentially, at least a pair of of baffle (212) for being arranged radially, in each pair of baffle (212) in the state of being shelved on the pedestal (1), what the gap between each pair of baffle (212) and pedestal (1) was then constituted The air intake of the primary air channel (4).

13. cooker burner according to claim 12, it is characterised in that: the inner ring wall of the outer portion (52) (521) jagged (5211) are opened up, the cavity surrounded between the annular peripheral wall (71) of the notch (5211) and the annular compartment It interlinks, the notch (5211) and the cavity collectively form the transmission channel (6).

14. cooker burner according to claim 7, it is characterised in that: the annular wall (512) of the internal ring portion (51) with And cover the third that formation is separated with first mixing chamber (514) and the second mixing chamber (525) phase fluid between main cover plate (513) Mixing chamber (8), the cavity (11) of the pedestal (1) is interior also to accommodate at least one second injector (9), and the pedestal (1) it is provided on and at least one second injection channel (10) independently of first injection channel (3), second injection Channel (10) and the pedestal (1) and the second injector (9) configured in fluid communication.

15. cooker burner according to claim 14, it is characterised in that: fire cover (5) roof is in internal ring portion (51) Annular wall (512) in enclose and offer at least one through-hole (50), the through-hole (50) is downwardly convex to be equipped with convex wall (501), described The chamber that convex wall (501) surrounds constitutes second injection channel (10) fuel mixture into the third mixing chamber (8) top opening.

16. cooker burner according to claim 15, it is characterised in that: second injection channel (10) is axial text Venturi.

17. cooker burner according to claim 15 or 16, it is characterised in that: be provided on fire cover (5) roof At least one demarcation plate (20), the demarcation plate (20) by the third mixing chamber (8) be separated at least two separate chambers (201, 201 '), each separate chamber is connected to corresponding second injection channel (10).

18. cooker burner described in 4 or 15 or 16 according to claim 1, it is characterised in that: the internal ring portion (51) is upward convex If annular wall (512) and main cover plate (513) between be additionally provided with partition (30), the top surface of the partition (30) offers at least One for the venthole (301) through the mixed fuel mixture outflow of the third mixing chamber (8), partition (30) following table Face and internal ring portion (51) upper surface have the first gap (302), between partition (30) upper surface and the main cover plate (513) With the second gap (303), second gap (303) constitutes the crater of internal ring portion (51).

19. cooker burner according to claim 18, it is characterised in that: the central position of internal ring portion (51) upper surface Set it is upward convex be equipped with a circle flange collar (510), the partition (30) has the peace that can be shelved in the flange collar (510) in corresponding position It fills hole (304), outer ledge and the annular wall (512) of the partition (30) offset, the upper surface edge of the partition (30) Arranged circumferentially spaced to have at least two for supporting the fin (305) of the main cover plate (513), the main cover plate (513) is then Extending downwardly in the position of corresponding flange collar (510) can be adapted to across the mounting hole (304) and with the flange collar (510) Convex annular wall (5130).