CN213237520U - Upper air inlet burner and cooker applying same - Google Patents

Abstract

The utility model relates to an go up air inlet burner and use cooking utensils that have this last air inlet burner, its characterized in that: including the base, set up the connector on the base, transversely run through the first of connector draw penetrate the pipe, set up on the base to and be formed with the first fire lid that is located the first gas mixing chamber of central authorities between the base, the first pipe wall that draws penetrate the pipe corresponds the position in first gas mixing chamber has the opening, the connector corresponds the first gas inlet end that draws penetrate the pipe have with the primary air chamber of first gas mixing chamber phase fluid intercommunication compares with prior art, the utility model has the advantages of first draw penetrate the pipe transversely to run through the base, has increased the length that first penetrates the pipe on the one hand effectively, and the setting up of primary air chamber can make the primary air of the income gas end that first draws penetrate the pipe more sufficient, avoids gas and primary air to be by the joining of equidirectional and striking each other, has improved the degree of consistency that primary air and gas mix.

Description

Upper air inlet burner and cooker applying same

Technical Field

The utility model relates to a combustor of gas cooking utensils especially relates to a take cooking utensils combustor of last air inlet formula of many nozzles and applied cooking utensils that have this last air inlet combustor.

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.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve provides one kind and can improve the air/gas and mix more even last air inlet burner to above-mentioned prior art current situation.

The utility model aims to solve the second technical problem that to above-mentioned prior art current situation and provide one kind can realize can effectively reducing the last air inlet burner that the nozzle was blockked up by the discharge when the whole height of combustor.

The utility model aims to solve the third technical problem that to above-mentioned prior art current situation and provide a clean last air inlet burner of convenience of customers.

The fourth technical problem to be solved in the present invention is to provide a cooker with the above-mentioned upper inlet burner in view of the above-mentioned current situation of the prior art.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: this last air inlet burner, including the base, its characterized in that: also includes:

the connecting body is arranged on the base;

the first injection pipe transversely penetrates through the connecting body; and

the first fire cover is arranged on the first injection pipe, and a first gas mixing chamber positioned in the center is formed between the first fire cover and the first injection pipe; the pipe wall of the first injection pipe is provided with an opening for mixed gas obtained by mixing fuel gas and primary air to flow into the first gas mixing chamber at a position corresponding to the first gas mixing chamber, the connector is provided with a primary air chamber which is in fluid communication with the first gas mixing chamber corresponding to the gas inlet end of the first injection pipe, and the gas inlet end of the first injection pipe is provided with a first ejector in the primary air chamber.

For solving the second technical problem, in order to ensure effectively prolonging the length of first ejector pipe, be unlikely to again and lead to the holistic height of last air inlet burner too high, the utility model discloses an air chamber has special design, preferably, the air chamber of connector is including the first wall at the air inlet end place of first ejector pipe, with the second wall that first wall is relative connects third wall, the fourth wall of first wall and second wall to and cover the roof of first wall, second wall and third wall and fourth wall, the connector is in the roof of air chamber court the air outlet end direction of first ejector pipe extends to have the flow homogenizing board that is used for flow equalizing, the flow homogenizing board covers on the first ejector pipe. The first wall surface, the second wall surface, the third wall surface, the fourth wall surface and the top wall of the primary air chamber form a 'protection wall' for preventing the first ejector from being blocked by the overflowing liquid.

Furthermore, the peripheral wall of the air outlet end of the first injection pipe is gradually inclined towards the first fire cover from bottom to top, and the periphery of the uniform flow plate extends to the upper end part of the peripheral wall of the air outlet end of the first injection pipe.

The connecting body further comprises a bottom plate positioned below the first injection pipe, the bottom plate, the flow equalizing plate and the third wall surface of the primary air chamber jointly enclose a first outer flow equalizing cavity, the bottom plate, the flow equalizing plate and the fourth wall surface of the primary air chamber jointly enclose a second outer flow equalizing cavity, the periphery of the bottom plate extends to the lower end portion of the peripheral wall where the air outlet end of the first injection pipe is located, a first gap communicated with the first outer flow equalizing cavity is formed between the periphery of the bottom plate and the periphery of the flow equalizing plate, and a second gap communicated with the second outer flow equalizing cavity is formed between the periphery of the bottom plate and the periphery of the flow equalizing plate. Under the effect of second fire lid like this, can draw the pipe with first drawing and draw the pipe with the third and draw the pipe to separate, the second draws the gas that the pipe draws and jets and primary air can supply to second fire lid through first clearance, and the third draws the gas that the pipe draws and jets and primary air can supply to second fire lid through the second clearance.

In order to realize that the burner has two circles of flames of an inner ring and an outer ring, preferably, the connector is further provided with a second injection pipe and a third injection pipe which transversely penetrate through the connector, an air outlet of the second injection pipe is communicated with the second outer uniform flow cavity, an air outlet end of the third injection pipe is communicated with the third uniform flow cavity, and an air inlet of the second injection pipe and an air inlet end of the third injection pipe are both located on the first wall surface of the primary air chamber. Simultaneously, the air inlet of the second injection pipe and the air inlet end of the third injection pipe are both positioned on the first wall surface of the primary air chamber, so that uniform mixing of primary air and fuel gas of the second injection pipe and the third injection pipe can be realized.

Further, the connecting body is provided with a second fire cover, the second fire cover comprises an annular upper wall, an inner annular wall extending downwards from the inner side edge of the annular upper wall and an outer annular wall extending downwards from the outer side edge of the annular upper wall, the outer annular wall is provided with a first annular outer step and a second annular outer step from top to bottom, the first annular outer step comprises a first annular wall surface located above the step and a second annular wall surface located below the step, the second annular outer step comprises a third annular wall surface located below the second annular wall surface and a fourth annular wall surface located below the third annular wall surface, the fourth annular wall surface protrudes outwards compared with the third annular wall surface, the fourth annular wall surface corresponds to the inclined surface of the peripheral wall where the air outlet end of the first injection pipe is located, and the fourth annular wall is connected with the bottom wall of the connecting body, The second fire cover and the connecting body jointly enclose a second gas mixing chamber positioned on the periphery of the first gas mixing chamber, and a fourth annular wall surface of the second fire cover abuts against the gas outlet end of the first injection pipe, so that the second flow equalizing chamber and the third flow equalizing chamber are mutually independent. When the fourth annular wall surface of the second fire cover abuts against the air outlet end of the first injection pipe ingeniously, the first injection pipe is used as a partition plate of the second uniform flow cavity and the third uniform flow cavity, so that mutual independence of the second uniform flow cavity and the third uniform flow cavity is realized, independent control of the second injector and the third injector is realized, firepower of outer ring fire can be controlled more conveniently, at last, the first injection pipe and the second injection pipe, the air outlet of the third injection pipe is in the second mixed gas cavity, and extra plugging structures are not needed to reduce cost expense caused by increasing sealing measures.

Preferably, the first annular wall surface inclines gradually outwards from top to bottom, the second annular wall surface inclines gradually inwards from top to bottom, the third annular wall surface and the fourth annular wall surface incline gradually outwards from top to bottom, an included angle a is formed between the third annular wall surface and the base, and an included angle β is formed between the fourth annular wall surface and the base, wherein the included angle a < β. The second fire cover can form a second gas mixing chamber and a first plugging structure of the injection pipe, so that the structure of the integral upper air inlet burner is simpler.

In order to better realize the uniform gas mixing of the second gas mixing chamber, it is preferable that the flow distribution plate has at least two second flow distribution holes for fluid communication between the second flow distribution chamber and the second flow distribution chamber, and the flow distribution plate has at least two third flow distribution holes for fluid communication between the third flow distribution chamber and the second flow distribution chamber. This even discharge orifice of second can make and draw the gas that the pipe flows and primary air from the second to carry out preliminary mixing earlier through the even chamber that flows of second, then flow to the second through the even discharge orifice of second more evenly and mix the gas chamber, and this even discharge orifice of third can make and draw the gas that the pipe flows and primary air from the third to carry out preliminary mixing earlier through the even chamber that flows of third equally, then flow to the second through the even discharge orifice of third more evenly and mix the gas chamber. When cleaning, only the connecting body needs to be taken away, and the panel or the base can be left, so that the cleaning is convenient.

Furthermore, the first fire cover comprises a fire cover body, the fire cover body comprises a first outer ring wall and a first top wall, the first outer ring wall of the fire cover body comprises a first wall ring surface and a second wall ring surface, the first wall ring surface gradually inclines outwards from top to bottom, the second wall ring surface gradually inclines inwards from top to bottom of the first wall ring surface, at least two fire outlets are formed in the first wall ring surface at intervals along the circumferential direction, a flow guide channel for guiding overflow liquid is formed between at least one pair of adjacent fire outlets in the first wall ring surface, a liquid inlet of the flow guide channel is formed in the first top wall, and a liquid outlet of the flow guide channel is formed in the second wall ring surface.

In order to avoid the fire hole from being blocked by the overflowing liquid, preferably, the outer periphery of the first top wall of the fire cover body extends outwards to form a circle for shielding the convex circle of the first outer ring wall.

In order to prevent the overflowing liquid from blocking the ignition hole, preferably, the ignition hole is formed in a position, adjacent to the ignition needle, of the first wall ring surface of the fire cover body, and a first groove is formed in the wall surface, corresponding to the ignition hole, of the first wall ring surface in a radially inward recessed mode. The arrangement of the first groove can enable the overflowing liquid to flow away close to the first wall surface of the first groove more, and the anti-blocking performance of the ignition hole is enhanced.

In order to prevent the overflowing liquid from entering the first groove to block the ignition hole, the convex ring of the first top wall of the fire cover body is preferably provided with a first waterproof platform extending outwards along the radial direction of the fire cover body at a position corresponding to the first groove.

In order to avoid the overflowing liquid from blocking the fire hole, preferably, a fire protection hole is formed in a position, adjacent to the thermocouple, of the first wall annular surface of the fire cover body, and a second groove is formed in the wall surface, corresponding to the fire protection hole, of the first wall annular surface in a radially inward recessed mode. The arrangement of the second groove can enable the overflowing liquid to flow away close to the first wall surface of the second groove more, and the anti-blocking performance of the fire protection hole is enhanced.

In order to prevent the overflowing liquid from entering the second groove to block the fire protection hole, the convex ring of the first top wall of the fire cover body is preferably provided with a second waterproof platform extending outwards along the radial direction of the fire cover body at a position corresponding to the second groove.

Further, the surface of the first top wall of the fire cover body is at least partially recessed downwards to form a groove for buffering overflowing liquid. The surface of the top wall of the fire cover body is provided with a groove for storing overflowing liquid, so that the overflowing liquid can be better buffered on the top wall.

For solving the fourth technical problem, the utility model also provides an use cooking utensils that have foretell last air inlet burner, including the panel, its characterized in that: the base is part of the panel. When cleaning, only the connecting body needs to be taken away, and the panel can be left, so that the cleaning is convenient.

In order to solve the fourth technical problem, the utility model provides an use cooking utensils that have foretell last air inlet burner still, including the flourishing liquid dish that is located under the combustor, its characterized in that: the liquid containing disc is used as the base. When cleaning, only the connector needs to be taken away, and the liquid containing disc can be left, so that the cleaning is convenient.

Compared with the prior art, the utility model has the advantages of first draw penetrate the pipe transversely and run through the base, on the one hand increased first length of drawing penetrate the pipe effectively, the setting up of air chamber can make first draw penetrate the income air-end of pipe the primary air more sufficient, avoid gas and primary air to strike each other by the confluence of equidirectional, the degree of consistency that primary air and gas mix has further been improved, when improving the primary air suction rate, can also effectively reduce the kinetic energy loss, make its diffusion even, thereby can remain stable and even flame to the play fire region of supplying with first fire lid by first gas mixing chamber, thereby make the flame of last air inlet burner short, even and powerful, yellow flame can not appear, defects such as tempering, and finally, the utility model discloses a gas mixing chamber, first fire lid is easily to dismantle mounting structure, convenience of customers is clean.

Drawings

Fig. 1 is a schematic structural view of an upper air inlet burner in an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of an angle of the connecting body according to the embodiment of the present invention;

FIG. 4 is a schematic view of another angle of the connecting body according to the embodiment of the present invention;

FIG. 5 is a schematic view of another angle of the connecting body according to the embodiment of the present invention;

fig. 6 is a schematic structural view of a second fire cover in an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a second fire cover in an embodiment of the invention;

fig. 8 is a schematic view of an embodiment of the present invention in which the upper inlet burner rests on the panel;

FIG. 9 is a cross-sectional view at an angle of FIG. 8;

FIG. 10 is a cross-sectional view at yet another angle of FIG. 8;

fig. 11 is a schematic structural view of an angle of the first fire cover in the embodiment of the present invention;

FIG. 12 is a cross-sectional view of FIG. 11;

fig. 13 is a schematic structural view of the first fire cover at another angle according to the embodiment of the present invention.

Detailed Description

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

As shown in FIGS. 1 to 13, the preferred embodiment of the present invention is shown. The upper air inlet burner of the embodiment comprises a base, and further comprises a connecting body 6 arranged on the base, a first injection pipe 7 transversely penetrating through the connecting body 6, and a first fire cover arranged on the first injection pipe 7, wherein a first air mixing chamber 10 located in the center is formed between the first injection pipe 7 and the connecting body, an opening 71 for mixed air mixed by gas and primary air to flow into the first air mixing chamber 10 is formed in a position, corresponding to the first air mixing chamber 10, of the pipe wall of the first injection pipe 7, an air inlet end 72 of the connecting body 6, corresponding to the first injection pipe 7, is provided with a primary air chamber 8 in fluid communication with the first air mixing chamber 10, and a first ejector 9 is matched with the air inlet end 72 of the first injection pipe 7 in the primary air chamber 8. First draw and penetrate pipe 7 and transversely run through the base, on the one hand, the length of first drawing pipe 7 has been increased effectively, the setting of air chamber 8 can make the first primary air who penetrates pipe 7 income gas end 4020 more sufficient, avoid gas and primary air to strike each other by the confluence of equidirectional not, the degree of consistency that primary air and gas mix has further been improved, when improving primary air suction rate, can also effectively reduce the kinetic energy loss, make its diffusion even, thereby can remain stable and even flame to the play fire region of supplying with first fire lid by first gas mixing chamber 10, thereby make the flame of last air inlet burner short, evenly and powerful, yellow flame can not appear, defects such as tempering, finally, the first gas mixing chamber 10 of this embodiment, first fire lid is easily dismantled mounting structure, convenience of customers is clean.

Specifically, in order to ensure that the length of the first ejector tube 7 is effectively extended and the overall height of the upper intake air burner is not too high, the primary air chamber 8 of the present embodiment has a special design, wherein the primary air chamber 8 of the connecting body 6 includes a first wall surface 81 where the air inlet end 72 of the first ejector tube 7 is located, a second wall surface 82 opposite to the first wall surface 81, a third wall surface 83 and a fourth wall surface 84 connecting the first wall surface 81 and the second wall surface 82, and a top wall 85 covering the first wall surface 81, the second wall surface 82, the third wall surface 83 and the fourth wall surface 84, the connecting body 6 extends from the top wall 85 of the primary air chamber 8 to the air outlet direction of the air inlet end 72 of the first ejector tube 7 to form a flow equalizing plate 61 for equalizing, and the flow equalizing plate 61 covers the first ejector tube 7. The first wall 81, the second wall 82, the third wall 83, the fourth wall 84 and the top wall 85 of the primary air chamber 8 constitute a "protection wall" for preventing the first injector 9 from being blocked by the spilled liquid, for this reason, the primary air chamber 8 has the function of preventing the spilled liquid from being blocked, the design of the uniform flow plate 61 can increase the uniform mixing of the primary air and the gas, and the connecting body 6 integrates the functions of the spill prevention and the "buffer cavity" for supplying the primary air. Wherein, the peripheral wall of the air outlet 73 of the first injection pipe 7 is gradually inclined towards the first fire cover from bottom to top, and the periphery of the uniform flow plate 61 extends to the upper end of the peripheral wall of the air outlet 73 of the first injection pipe 7. The connecting body 6 further comprises a bottom plate 62 located below the first injection pipe 7, the bottom plate 62, the flow equalizing plate 61 and the third wall surface 83 of the primary air chamber 8 together enclose a first outer flow equalizing cavity 63, the bottom plate 62, the flow equalizing plate 61 and the fourth wall surface 84 of the primary air chamber 8 together enclose a second outer flow equalizing cavity 64, wherein the periphery of the bottom plate 62 extends to the lower end of the peripheral wall of the first injection pipe 7 where the air outlet 73 is located, so that a first gap 65 communicated with the first outer flow equalizing cavity 63 is formed between the periphery of the bottom plate 62 and the periphery of the flow equalizing plate 61, and a second gap 66 communicated with the second outer flow equalizing cavity 64 is formed between the periphery of the bottom plate 62 and the periphery of the flow equalizing plate 61. The connecting body 6 is provided with a second fire cover 40, the second fire cover 40 includes an annular upper wall 401, an inner annular wall 402 extending downward from the inner edge of the annular upper wall 401, and an outer annular wall 403 extending downward from the outer edge of the annular upper wall 401, the second fire cover 40 of the embodiment also has the particularity that: the outer ring wall 403 of the second fire cap 40 has a first annular outer step 4031 and a second annular outer step 4032 from top to bottom, the first annular outer step 4031 includes a first annular wall 4031a located above the step and a second annular wall 4031b located below the step, the second annular outer step 4032 includes a third annular wall 4032a located below the second annular wall 4031b and a fourth annular wall 4032b located below the third annular wall 4032a, the fourth annular wall 4032b protrudes outward more than the third annular wall 4032a, the fourth annular wall 4032b corresponds to the inclined surface of the peripheral wall where the outlet end 73 of the first ejector tube 7 is located, the fourth annular wall is connected to the bottom wall of the connecting body 6, the flow equalizing plate 40361 has a protruding wall 610 connected to the inner ring wall 402, the second fire cap 40 and the connecting body 6 together form a second gas mixing chamber located outside the first gas mixing chamber 10, and the fourth annular wall 4032b of the second fire cover 40 abuts against the air outlet end 73 of the first ejection pipe 7, so that mutual independence of the first outer uniform flow cavity 63 and the second outer uniform flow cavity 64 is realized, ingeniously, when the fourth annular wall 4032b of the second fire cover 40 abuts against the air outlet end 73 of the first ejection pipe 7, the first ejection pipe 7 is used as a 'separation plate' of the first outer uniform flow cavity 63 and the second outer uniform flow cavity 64, so that mutual independence of the first outer uniform flow cavity 63 and the second outer uniform flow cavity 64 is realized, so that independent control of the second ejector and the third ejector is realized, the firepower of the outer annular fire can be controlled more conveniently, and finally, the air outlets of the second ejection pipe 30 and the third ejection pipe 90 are both in the second air mixing cavity, and extra plugging structures are not needed, so that the cost brought by increasing sealing measures is reduced. Therefore, when the second fire cover 40 covers the connecting body 6, the first injection pipe 7, the second injection pipe 30 and the third injection pipe 90 can be separated, the gas and the primary air which are injected from the second injection pipe 30 can be supplied to the second fire cover 40 through the first gap 65, the gas and the primary air which are injected from the third injection pipe 90 can be supplied to the second fire cover 40 through the second gap 66 and uniformly mixed through the second outer uniform flow cavity 64 and the third outer uniform flow cavity to flow to the fire outlet of the second fire cover 40, the gas inlet 302 of the second injection pipe 30 and the gas inlet 4020 of the third injection pipe 90 are both positioned on the first wall surface 81 of the primary air chamber 8, and the gas inlet 302 of the second injection pipe 30 and the gas inlet 4020 of the third injection pipe 90 are both positioned on the first wall surface 81 of the primary air chamber 8, so that the primary air of the second injection pipe 30 and the third injection pipe 90 can come from the primary air chamber 8, thus, the primary air and the fuel gas can be mixed more uniformly. Furthermore, the flow equalizing plate 61 has at least two second flow equalizing holes 611 corresponding to the first outer flow equalizing chamber 63 and enabling the two to be in fluid communication with each other, the flow equalizing plate 61 has at least two third flow equalizing holes 612 corresponding to the second outer flow equalizing chamber 64 and enabling the two to be in fluid communication with each other, in order to better achieve uniform gas mixing of the second gas mixing chamber, the second flow equalizing holes 611 enable the gas and the primary air flowing out of the second injection pipe 30 to be primarily mixed through the first outer flow equalizing chamber 63 and then more uniformly flow to the second gas mixing chamber through the second flow equalizing holes 611, and correspondingly, the third flow equalizing holes 612 enable the gas and the primary air flowing out of the third injection pipe 90 to be primarily mixed through the second outer flow equalizing chamber 64 and then more uniformly flow to the second gas mixing chamber through the third flow equalizing holes 612. When cleaning, only the connecting body 6 needs to be taken away, and the panel or the base can be left, so that the cleaning is convenient.

The first fire cover of the embodiment comprises a fire cover body 1, the fire cover body 1 comprises a first outer annular wall 11 and a first top wall 12, the first outer annular wall 11 of the fire cover body 1 comprises a first wall ring surface 111 which is gradually inclined outwards from top to bottom and a second wall ring surface 112 which is gradually inclined inwards from top to bottom from the first wall ring surface 111, at least two fire outlets 2 are circumferentially arranged on the first wall ring surface 111 at intervals, a flow guide channel 3 for guiding overflow is arranged between at least one pair of adjacent fire outlets 2 on the first wall ring surface 111, a liquid inlet 31 of the flow guide channel 3 is arranged on the top wall 8512, and a liquid outlet 32 of the flow guide channel 3 is arranged on the second wall ring surface 112. The first outer ring wall 11 of the fire cover independently forms a space capable of guiding the overflowing liquid, and meanwhile, the first wall ring surface 111 of the first outer ring wall 11 is provided with the flow guiding channel 3 capable of guiding the overflowing liquid to the second wall ring surface 112, so that the overflowing liquid can be accelerated to be discharged from the first top wall 12, the fire of the fire outlet 2 on the first wall ring surface 111 is not influenced, and the fire outlet 2 is not easy to be blocked. In order to prevent the fire hole 2 from being blocked by the overflowing liquid, a ring extending outwards from the outer periphery of the first top wall 12 of the fire cap body 1 is used for shielding the convex ring 1210 of the outer ring wall 40311. In order to prevent the overflowing liquid from blocking the ignition hole 4, the ignition hole 4 is formed in the position, adjacent to the ignition needle, of the first wall ring surface 111 of the fire cover body 1, the first groove 1111 is formed in the wall surface, corresponding to the ignition hole 4, of the first wall ring surface 111 in a inwards recessed mode along the radial direction, the overflowing liquid can flow away from the first wall ring surface 111, adjacent to the first groove 1111, and the blocking resistance of the ignition hole 4 is enhanced. Meanwhile, in order to prevent the overflowing liquid from entering the first groove 1111 to block the ignition hole 4, the convex ring 1210 of the first top wall 12 of the fire lid body 1 has a first waterproof platform 1211 extending outward in the radial direction of the fire lid body 1 at a position corresponding to the first groove 1111. In addition, in order to avoid the overflowing liquid from blocking the ignition hole 4, the first wall ring surface 111 of the fire cover body 1 is provided with the fire protection hole 5 at a position adjacent to the thermocouple, the wall surface of the first wall ring surface 111 corresponding to the fire protection hole 5 is radially inwards recessed with a second groove 1112, the arrangement of the second groove 1112 can enable the overflowing liquid to flow away more adjacent to the first wall ring surface 111 of the second groove 1112, and the blocking resistance of the fire protection hole 5 is enhanced. Finally, in order to prevent the overflow from entering the second groove 1112 and causing the blockage of the fire protection hole 5, the position of the convex ring 1210 of the first top wall 12 of the fire cap body 1 corresponding to the second groove 1112 is provided with a second waterproof platform 1212 extending outward along the radial direction of the fire cap body 1. Because the first fire cover is provided with the guide channels 3 for guiding the overflowing liquid, the guide channels 3 are provided with two guide channels 3 which are respectively arranged between the first groove 1111 and the second groove 1112 at intervals along the circumferential direction, because the liquid inlet 31 of each guide channel 3 is arranged on the first top wall 12, the liquid outlet 32 of each guide channel 3 is arranged on the second wall ring surface 112, and the flowing part of each guide channel 3 is arranged on the first wall ring surface 111, once the overflowing liquid is stored in the groove 121 in the cooking process, the overflowing liquid can flow in through the liquid inlet 31 of the two guide channels 3 and flow through the liquid guiding part positioned on the first wall ring surface 111, and finally flows out through the liquid outlet 32, without influencing the fire outlet of the fire outlet 2 on the first wall ring surface 111.

Finally, the embodiment also provides a cooker using the above upper air inlet burner, which comprises a panel, wherein the panel is provided with a liquid containing disc 2000, the liquid containing disc 2000 is used as a base, when in cleaning, the liquid containing disc 2000 can be left only by taking off the connecting body 6, the cooker has the characteristic of convenient cleaning, in order to reduce the heat conduction contacting with the liquid containing disc 2000 and improve the heat efficiency, the second air mixing chamber uses the supporting connection mode of the supporting column 5000, 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 ejector 9 of the primary air chamber 8 from the outside by the kinetic energy of the gas, the primary air and the gas are premixed and respectively enter the first air mixing chamber 10, the mixed primary air and the gas finally pass through the fire hole of the first fire cover and are ignited together with the secondary air of the external environment, the inner ring fire is formed, the secondary fire cover 40 of the outer circumference fire which can be controlled by the user independently is also included, the primary air and the fuel gas which are needed by the outer circumference fire are input into the second air mixing chamber through the second injection pipe 30 and the third injection pipe 90 independently from the first injection pipe 7, meanwhile, the second air mixing chamber is separated from the first air mixing chamber 10, the fluid separation of the second air mixing chamber and the first air mixing chamber 10 is realized in this way, then the secondary air mixing chamber and the first air mixing chamber 10 can be supplied independently, so that the user is allowed to control the inflow of the fuel mixture which enters into the first injection pipe 7, the second injection pipe 30 and the third injection pipe 90 independently, if the sizes of the outer circumference fire and the central fire are required to be adjusted, the adjusting valves of the total air inlet pipe which is connected with the first air inlet pipe 1000 of the first injector 9, the second air inlet pipe 3000 which is communicated with the second injector 500 and the third air inlet pipe 4000 of the third injector 600 are required, in addition, because the second ejector 500 and the third ejector 600, and the second air inlet pipe 3000 and the third air inlet pipe 4000 are symmetrically designed relative to the first ejector 9, the balance of the ejection pressure of each ejector is facilitated, and meanwhile, the first ejector 9, the second ejector 500 and the third ejector 600 are hidden in the primary air chamber 8 of the connecting body 6, so that the effective blockage prevention of the first ejector 9, the second ejector 500 and the third ejector 600 during pot overflow is realized, a cup-free structure is realized, and the cleaning is facilitated.

Claims (17)

1. The utility model provides an upper air inlet burner, including the base, its characterized in that: also includes:

a connecting body (6) disposed above the base;

the first injection pipe (7) transversely penetrates through the connecting body (6); and

the first fire cover is arranged on the first injection pipe (7), and a first gas mixing chamber (10) located in the center is formed between the first fire cover and the first injection pipe (7); the position of the pipe wall of the first injection pipe (7) corresponding to the first gas mixing chamber (10) is provided with an opening (71) for mixed gas obtained after mixing gas and primary air to flow into the first gas mixing chamber (10), the gas inlet end (72) of the connecting body (6) corresponding to the first injection pipe (7) is provided with a primary air chamber (8) in fluid communication with the first gas mixing chamber (10), and the gas inlet end (72) of the first injection pipe (7) is provided with a first ejector (9) in the primary air chamber (8).

2. The upper intake burner of claim 1, wherein: the primary air chamber (8) of the connector (6) comprises a first wall surface (81) where an air inlet end (72) of the first injection pipe (7) is located, a second wall surface (82) opposite to the first wall surface (81), a third wall surface (83) and a fourth wall surface (84) which are connected with the first wall surface (81) and the second wall surface (82), and a top wall (85) which covers the first wall surface (81), the second wall surface (82), the third wall surface (83) and the fourth wall surface (84), wherein the connector (6) extends from the top wall (85) of the primary air chamber (8) to the air outlet direction of the air inlet end (72) of the first injection pipe (7) to form a flow equalizing plate (61) for flow equalization, and the flow equalizing plate (61) covers the first injection pipe (7).

3. The upper intake burner of claim 2, wherein: the peripheral wall of the air outlet end (73) of the first injection pipe (7) is gradually inclined towards the first fire cover from bottom to top, and the periphery of the uniform flow plate (61) extends to the upper end part of the peripheral wall of the air outlet end (73) of the first injection pipe (7).

4. The upper intake burner of claim 3, wherein: the connecting body (6) also comprises a bottom plate (62) positioned below the first injection pipe (7), the bottom plate (62), the flow equalizing plate (61) and a third wall surface (83) of the primary air chamber (8) jointly enclose a first outer flow equalizing cavity (63), the bottom plate (62), the flow equalizing plate (61) and a fourth wall surface (84) of the primary air chamber (8) jointly enclose a second outer flow equalizing cavity (64), wherein the periphery of the bottom plate (62) extends to the lower end part of the peripheral wall of the air outlet end (73) of the first injection pipe (7), a first gap (65) communicated with the first outer uniform flow cavity (63) is arranged between the periphery of the bottom plate (62) and the periphery of the uniform flow plate (61), and a second gap (66) communicated with the second outer uniform flow cavity (64) is formed between the periphery of the bottom plate (62) and the periphery of the uniform flow plate (61).

5. The upper intake burner of claim 4, wherein: the connecting body (6) is further provided with a second injection pipe (30) and a third injection pipe (90) which transversely penetrate through the connecting body (6), an air outlet (301) of the second injection pipe (30) is communicated with the second outer uniform flow cavity (64), an air outlet end (4010) of the third injection pipe (90) is communicated with the second outer uniform flow cavity (64), and an air inlet (302) of the second injection pipe (30) and an air inlet end (4020) of the third injection pipe (90) are both located on a first wall surface (81) of the primary air chamber (8).

6. The upper intake burner of claim 5, wherein: a second fire cover (40) is arranged on the connecting body (6), the second fire cover (40) comprises an annular upper wall (401), an inner annular wall (402) extending downwards from the inner side edge of the annular upper wall (401) and an outer annular wall (403) extending downwards from the outer side edge of the annular upper wall (401), the outer annular wall (403) is provided with a first annular outer step (4031) and a second annular outer step (4032) from top to bottom, the first annular outer step (4031) comprises a first annular wall surface (4031a) positioned above the step and a second annular wall surface (4031b) positioned below the step, the second annular outer step (4032) comprises a third annular wall surface (4032a) positioned below the second annular wall surface (4031b) and a fourth annular wall surface (4032b) positioned below the third annular wall surface (4032a), and the fourth annular wall surface (4032b) protrudes outwards compared with the third annular wall surface (4032a), the fourth annular wall surface (4032b) corresponds to an inclined surface of a peripheral wall of the air outlet end (73) of the first injection pipe (7), the fourth annular wall is connected with a bottom wall of the connecting body (6), a convex wall (610) connected with the inner annular wall (402) is arranged on the flow equalizing plate (61), the second fire cover (40) and the connecting body (6) jointly form a second air mixing chamber located on the periphery of the first air mixing chamber (10), and the fourth annular wall surface (4032b) of the second fire cover (40) abuts against the air outlet end (73) of the first injection pipe (7), so that the first outer air equalizing chamber (63) and the second outer air equalizing chamber (64) are independent from each other.

7. The upper intake burner of claim 6, wherein: the first annular wall surface (4031a) is gradually inclined outwards from top to bottom, the second annular wall surface (4031b) is gradually inclined inwards from top to bottom, the third annular wall surface (4032a) and the fourth annular wall surface (4032b) are both gradually inclined outwards from top to bottom, an included angle a is formed between the third annular wall surface (4032a) and the base, and an included angle beta is formed between the fourth annular wall surface (4032b) and the base, wherein the included angle a < beta.

8. The upper intake burner of claim 7, wherein: the flow equalizing plate (61) is provided with at least two second flow equalizing holes (611) corresponding to the first outer flow equalizing cavity (63) and enabling the two flow equalizing holes to be in fluid communication, and the flow equalizing plate (61) is provided with at least two third flow equalizing holes (612) corresponding to the second outer flow equalizing cavity (64) and enabling the two flow equalizing holes to be in fluid communication.

9. The upper intake air burner according to any one of claims 1 to 8, wherein: the first fire cover comprises a fire cover body (1), the fire cover body (1) comprises a first outer annular wall (11) and a first top wall (12), the first outer annular wall (11) of the fire cover body (1) comprises a first wall annular surface (111) and a second wall annular surface (112), the first wall annular surface (111) is gradually inclined outwards from top to bottom, the second wall annular surface (112) is gradually inclined inwards from top to bottom, at least two fire outlets (2) are formed in the first wall annular surface (111) at intervals along the circumferential direction, a flow guide channel (3) for guiding overflow liquid is formed between at least one pair of adjacent fire outlets (2) of the first wall annular surface (111), a liquid inlet (31) of the flow guide channel (3) is formed in the first top wall (12), and a liquid outlet (32) of the flow guide channel (3) is formed in the second wall annular surface (112).

10. The upper intake burner of claim 9, wherein: the outer periphery of the first top wall (12) of the fire cover body (1) extends outwards to form a circle of convex rings (1210) used for shielding the first outer ring wall (11).

11. The upper intake burner of claim 10, wherein: ignition holes (4) are formed in the positions, close to the ignition needles, of first wall ring surfaces (111) of the fire cover body (1), and first grooves (1111) are formed in the wall surfaces, corresponding to the ignition holes (4), of the first wall ring surfaces (111) in an inwards concave mode along the radial direction.

12. The upper intake burner of claim 11, wherein: the convex ring (1210) of the first top wall (12) of the fire cover body (1) is provided with a first waterproof platform (1211) which extends outwards along the radial direction of the fire cover body (1) at the position corresponding to the first groove (1111).

13. The upper intake air burner according to any one of claims 10 to 12, wherein: a first wall ring surface (111) of the fire cover body (1) is provided with a fire protection hole (5) at a position adjacent to the thermocouple, and a wall surface of the first wall ring surface (111) corresponding to the fire protection hole (5) is inwards recessed along a radial direction to form a second groove (1112).

14. The upper intake burner of claim 13, wherein: the position of the convex ring (1210) of the first top wall (12) of the fire cover body (1) corresponding to the second groove (1112) is provided with a second waterproof platform (1212) which extends outwards along the radial direction of the fire cover body (1).

15. The upper intake burner of claim 14, wherein: the surface of the first top wall (12) of the fire cover body (1) is at least partially recessed downwards to form a groove (121) for buffering overflowing liquid.

16. A cooking appliance applying an upper air inlet burner according to any one of claims 1 to 15, comprising a panel, characterized in that: the base is part of the panel.

17. A cooking appliance applying an upper air inlet burner according to any one of claims 1 to 15, comprising a liquid containing disc positioned below the burner, characterized in that: the liquid containing disc (2000) is used as the base.

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