CN111121029A - Upper air inlet burner and cooker applying same - Google Patents

Abstract

The invention relates to an upper air inlet burner, which is characterized in that: the ejector comprises a first ejector pipe with an air outlet end and an air inlet end, and a first ejector is matched at the air inlet end; the base is arranged outside the pipe wall of the first injection pipe, the spiral body is arranged on one side of the base corresponding to the air outlet end and extends into the air outlet end of the first injection pipe, the first air mixing chamber is arranged on the base and is formed in the center with the base, the air outlet end of the first injection pipe is in fluid communication with the first air mixing chamber through the spiral body, compared with the prior art, the gas mixing device has the advantages that the first injection pipe is arranged in the base, the spiral body is correspondingly arranged at the air outlet end of the first injection pipe, the uniformity of mixing of primary air and gas flowing out of the air outlet end is further improved through the spiral body, and finally, the first air mixing chamber and the first fire cover are of an easy-to-detach mounting structure, so that a user can clean the gas mixing device conveniently.

Description

Upper air inlet burner and cooker applying same

Technical Field

The invention relates to a burner of a gas cooker, in particular to an upper air inlet type cooker burner with multiple nozzles.

Background

At present, a complete upper air inlet type burner is used in a plurality of gas cookers, and because primary air and secondary air required by the complete upper air inlet type burner during burning are both from the upper part of a cooker panel, a chassis of the gas cooker can be completely sealed. However, the conventional burner with complete upward air intake is realized by the gap between the air mixing chamber and the base when primary air is supplemented, and therefore, the problem is that the gap exists between the air mixing chamber and the base, and after the mounting screw of the panel is mounted, the mounting screw can be seen from the outside of the burner, so that the appearance of the burner is not beautiful enough. Moreover, after the gap is formed between the base and the air mixing chamber, the overflowing liquid can flow into the base and the round basin-shaped main body positioned below the panel, namely the bottom cup, through the gap, so that much inconvenience is brought to maintenance and cleaning of a user, and the normal use of the burner can be influenced if the overflowing liquid cannot be removed for a long time. In addition, the structure of the 'bottom cup' causes the connecting part of the outlet of the injection pipe and the mixed gas channel to have sharp bend, which obviously increases injection resistance, and the design is like Chinese utility model patent ZL201120156854.0 (No. CN202082922U), the injection effect is not good, meanwhile, the primary air supplemented from the panel of the upper air inlet burner enters the 'bottom cup' by utilizing the negative pressure generated by the gas injected by the nozzle, which easily causes the uneven distribution of the air flow of the primary air and influences the primary air coefficient to a certain extent, thereby causing the uneven gas pressure flowing out from the fire holes arranged along the circumferential direction of the outer ring fire cover or the inner ring fire cover, thereby causing the uneven flame of the outer ring fire generated by the outer ring fire cover or the inner ring fire generated by the inner ring fire cover, and simultaneously, the second injection pipe and the first injection pipe of the burner are both arranged with the 'bottom cup', or with the setting of end cup components of a whole that can function independently, no matter the problem that the effect of drawing is poor is drawn in the influence that sets up with "end cup" an organic whole, still with the potential safety hazard that the seam produced that sets up the body that sets up with end cup components of a whole that can function independently brought, all need make further improvement to current last air inlet combustor. In addition, the invention discloses a multi-nozzle, large-flow and completely upward air inlet embedded type burner for a household gas stove (with the publication number of CN101446415A) as Chinese invention patent application with the application number of 200810220263.8, wherein the invention respectively arranges the inner nozzle and the outer nozzle corresponding to the inner ring ejector and the outer ring ejector at two sides in the diameter range of the burner, which can effectively improve the limitation of short length of the ejector pipe, simultaneously can realize independent adjustment of the inner flame and the outer flame, has higher combustion power, and becomes the mainstream trend of the upper air inlet burner pursuing high power, but because the inner ring ejector and the outer ring ejector are still arranged in a bottom cup, the integral height of the burner is still higher, and the integral aesthetic property is poorer.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide an upper intake burner capable of improving the more uniform mixing of the primary air/gas mixture of the inner ring in view of the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide an upper intake burner capable of improving the thermal efficiency of inner ring combustion in view of the above-mentioned prior art.

The third technical problem to be solved by the present invention is to provide an upper intake burner which can achieve high thermal power and effectively reduce the entire height of the burner, in view of the above-mentioned current state of the art.

A fourth technical problem to be solved by the present invention is to provide an upper intake air burner that can sufficiently supplement air and can sufficiently burn, in view of the above-mentioned prior art.

A fifth technical problem to be solved by the present invention is to provide an upper inlet air burner which is convenient for users to clean in view of the above prior art.

The sixth technical problem to be solved by the present invention is to provide a cooking stove using the above upper intake burner, aiming at the above prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this go up air inlet combustor, its characterized in that: comprises that

The first injection pipe comprises an air outlet end and an air inlet end, and a first ejector is adapted to the air inlet end;

the base surrounds the pipe wall of the first injection pipe;

the first fire cover is arranged on the base, and a first gas mixing chamber positioned in the center is formed between the first fire cover and the base;

the spiral body is arranged between the base and the first fire cover, a spiral channel which gradually spirally rises is arranged in the spiral body, the starting end of the spiral channel is communicated with the air outlet end of the first injection pipe, and the final end of the spiral channel is communicated with the first air mixing chamber.

In order to enable a user to independently control the central fire and the peripheral fire formed by the burner, the burner also comprises a mounting seat and second air mixing chambers which are arranged on the mounting seat, are positioned at the periphery of the first air mixing chamber and are mutually independent, wherein each second air mixing chamber comprises an inner ring wall surface and an outer ring wall surface which are concentrically arranged at intervals, a bottom wall for connecting the inner ring wall surface and the outer ring wall surface and a second fire cover covering the upper parts of the inner ring wall surface and the outer ring wall surface.

In order to provide sufficient secondary air for the first fire cover, an annular cavity is defined by the wall surface of the inner ring, the base transversely penetrates through the annular cavity, the air outlet end of the base corresponding to the first injection pipe is a closed end, the air inlet end of the base corresponding to the first injection pipe is an open end, and a secondary air channel for communicating the outside and the fire outlet area of the first fire cover is formed between the base and the annular cavity.

Furthermore, the first ejector is arranged on a nozzle seat positioned below the second gas mixing chamber, the first ejector is arranged in the central position of the nozzle seat and extends out of the mounting seat positioned above the nozzle seat, the gas mixing device further comprises a second ejector which is also arranged on the nozzle seat and is arranged at an interval with the first ejector, and a second injection pipe which is independent of the first injection pipe and is arranged in the second gas mixing chamber, an air inlet of the second injection pipe is opposite to the second ejector, and an air outlet is communicated with the second gas mixing chamber. The conventional bottom cup positioned below the panel is eliminated by utilizing the nozzle holder, and the first ejector and the second ejector are directly installed through the nozzle holder, so that the first ejector and the second ejector can directly supplement air through an air channel above the installation holder, the supplement is convenient, and the sufficient air supplement amount can be ensured to promote the full combustion of the combustor; in addition, the conventional bottom cup positioned below the containing mounting seat is eliminated, and meanwhile, the second injection pipe is skillfully arranged in the second gas mixing chamber, so that the overall height of the combustor can be reduced, and the potential safety hazard caused by gas leakage when the second injection pipe is connected by a seam can be avoided; the invention adopts a mode of a plurality of nozzles and a plurality of injection pipes, overcomes the limitation that the injection pipes are limited in the diameter range of the combustor to cause the size of the injection pipes to be still short, ensures the primary air injection capacity of the combustor and realizes large firepower.

In order to prevent the overall height of the combustor from being too high, supplement primary air on the mounting seat and ensure that the amount of the primary air is sufficient, the combustor also comprises a primary air channel, wherein the primary air channel is formed at a position, corresponding to the nozzle seat, on the wall surface of the outer ring and is locally recessed inwards along the radial direction of the air mixing chamber; the inward-concave outer ring wall surface part is directly used as a separating part for separating the primary air channel and the secondary air channel, and the separating part is provided with an air inlet of the second injection pipe and an air inlet of the first injection pipe.

Furthermore, at least one part of the bottom wall of the second air mixing chamber is recessed to form a support leg at other parts of the periphery of the primary air channel, the interval formed between adjacent support legs is communicated with the secondary air channel, and the secondary air channel is independent from the primary air channel. The primary air channel and the secondary air channel on the lower surface of the second air mixing chamber are mutually independent, the local part of the outer ring wall surface is skillfully used as a separating part for separating each other without mutual influence, other separating parts are not required to be additionally arranged, the structure is simple, the integral height of the combustor can be ensured not to be too high, and the structure is compact.

In order to effectively reduce the whole height of the combustor, the second injection pipe is skillfully arranged in the second gas mixing chamber; and a notch for accommodating the second injection pipe is formed in the supporting leg.

In order to further enable the gas pressure in the second gas mixing chamber to be uniform, a pressure stabilizing piece for stabilizing the pressure of the gas in the second gas mixing chamber is arranged in the second gas mixing chamber, and the pressure stabilizing piece can partially extend into the notch.

In order to further facilitate the placement of the pressure stabilizer, the pressure stabilizer comprises a plate body, the center of the plate body is provided with a central hole, the hole wall of the central hole protrudes upwards to form a circle of convex wall capable of surrounding the annular cavity, and the outer periphery of the plate body extends in the horizontal direction and can partially cover the notch.

Preferably, the second injection pipe is formed by joining an upper pipe body and a lower pipe body which are adaptive in shape, wherein the lower pipe body is formed by partially sinking the bottom of the supporting leg, and the upper pipe body is formed by sinking the outer periphery of the plate body from bottom to top.

In order to facilitate the placement of the second fire cover, the second fire cover comprises an annular body, the inner side edge and the outer side edge of the annular top wall of the body respectively extend downwards to form an inner ring wall connected with the inner ring wall surface and an outer ring wall connected with the outer ring wall surface, and a main fire hole is formed in the outer ring wall.

In order to prevent the flame leaving of the main fire hole, the air inlet end of the main fire hole is located at the bottom end of the outer ring wall, the air outlet end of the main fire hole is located at the outer ring wall, a first groove is circumferentially formed in the lower portion of the air outlet end of the main fire hole on the outer ring wall, and a first flame stabilizing hole communicated with the first groove is further formed in the bottom end of the outer ring wall.

Further, the first groove gradually inclines upwards from bottom to top and is intersected with the main fire hole. Thereby forming a V-shaped flame stabilizing channel, not only playing a flame stabilizing effect, but also preventing the overflow liquid from flowing backwards.

In order to prevent spillage from entering the nozzle holder, the outer ring wall extends outwardly to form a protective umbrella that is shielded over the nozzle holder. This design brings the following benefits: the outer ring wall can form a waterproof brim above the nozzle seat to prevent overflow liquid from entering a first ejector and a second ejector on the nozzle seat; the outer ring wall can be made of heat insulating materials so as to prevent flame heat generated by flame coming out from the second fire holes and the second flame stabilizing holes from interfering with primary air supplement of the first ejector and the second ejector on the nozzle seat; and thirdly, the outer ring wall can be used as a 'separation plate' to separate secondary air for supplementing the second fire hole and the second flame stabilizing hole which are communicated with the second air mixing chamber and primary air for supplementing the first ejector and the second ejector on the nozzle seat.

In order to allow the overflowing liquid to flow out of the nozzle holder quickly, the outer ring wall gradually extends downward from top to bottom radially outward of the second air-mixing chamber.

In order to facilitate the placement of the first fire cover and the flame stabilization of the inner fire hole, the first fire cover comprises a top cover and an outer ring wall extending downwards from the top cover, a circle of convex ring for the outer ring wall to abut against is correspondingly arranged on the base in a protruding mode, and the outer ring wall is provided with the inner fire hole communicated with the first gas mixing chamber and a second flame stabilization hole located above and/or below the inner fire hole.

The invention provides a cooker with the above upper air inlet burner to solve the last technical problem, which comprises a panel and is characterized in that: the mounting seat is a part of the panel.

The cooker applying the upper air inlet burner can also comprise a liquid containing disc positioned below the burner, and is characterized in that: the liquid containing disc is used as the mounting seat.

Compared with the prior art, the invention has the advantages that the first injection pipe is arranged in the base, the spiral body is correspondingly arranged at the air outlet end of the first injection pipe, the spiral body further improves the mixing uniformity of primary air and fuel gas flowing out of the air outlet end, so that stable and uniform flame can be kept for a fire outlet area of the first fire cover supplied by the first air mixing chamber, the flame of the upper air inlet burner is short, uniform and powerful, and the defects of yellow flame, tempering and the like can not occur.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention with an upper inlet burner resting on a panel;

FIG. 2 is a schematic view of the configuration of an upper inlet air burner at an angle (panel omitted) in an embodiment of the invention;

FIG. 3 is a schematic view of the configuration of an upper inlet air burner at another angle in an embodiment of the present invention (panel omitted);

FIG. 4 is an exploded view of the angle of FIG. 2;

FIG. 5 is a cross-sectional view at an angle of FIG. 2;

FIG. 6 is a cross-sectional view at another angle of FIG. 2 (with the nozzle carrier omitted);

FIG. 7 is a schematic structural view of the second air mixing chamber according to the embodiment of the present invention;

FIG. 8 is a schematic view of a structure of a stabilizer in an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a bottom of the second air mixing chamber in the embodiment of the invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in FIGS. 1 to 9, the preferred embodiment of the present invention is shown. The upper air inlet burner of the embodiment comprises a first injection pipe 2, a base 11 surrounding the pipe wall of the first injection pipe 2, a first fire cover 3 surrounding the pipe wall of the first injection pipe 2 and arranged above the central position of the base 11, wherein a first air mixing chamber 1 located in the center is formed between the first fire cover 3 and the base 11, the upper air inlet burner further comprises a spiral body 4 arranged between the base 11 and the first fire cover 3, a spiral channel which gradually spirally rises is arranged in the spiral body 4, the initial end of the spiral channel is communicated with an air outlet end 23 of the first injection pipe 2, the final end of the spiral channel is communicated with the first air mixing chamber 1, the air outlet end 23 of the first injection pipe 2 is in fluid communication with the first air mixing chamber 1 through the spiral body 4, an air inlet end 24 of the first injection pipe 2 is adapted with a first ejector 5, the spiral body 4 effectively increases the length of the first injection pipe 2, simultaneously the setting up of spirochaeta 4 can make the primary air/gas mixture spiral degree of the air outlet end 23 guide of first injection pipe 2 and jet out, the primary air after spirochaeta 4 is even carries out the mixing entering first air mixing chamber 1 of gas and primary air, the degree of consistency that primary air and gas mix has further been improved, when improving the primary air inhalation rate, can also effectively reduce the kinetic energy loss, make its diffusion even, thereby to the regional ability of keeping stable and even flame of going out of supplying with first fire lid 3 by first air mixing chamber 1.

In order to enable a user to independently control the central fire and the peripheral fire formed by the combustor, the gas mixing device further comprises a mounting seat 20 and a second gas mixing chamber 6 which is arranged on the mounting seat 20, is positioned at the periphery of the first gas mixing chamber 1 and is independent of the first gas mixing chamber, the second gas mixing chamber 6 comprises an inner ring wall surface 61 and an outer ring wall surface 62 which are concentrically arranged at intervals and a bottom wall 63 connecting the inner ring wall surface 61 and the outer ring wall surface 62, a second fire cover 7 covers the inner ring wall surface 61 and the outer ring wall surface 62, and the inner ring wall surface 61, the outer ring wall surface 62, the bottom wall 63 and the second fire cover 7 are jointly enclosed into the second gas mixing chamber 6. In order to provide sufficient secondary air for the first fire cover 3, the inner ring wall surface 61 is surrounded to form an annular cavity 611, the base 11 transversely penetrates through the annular cavity 611, the air outlet end 23, corresponding to the first injection pipe 2, of the base 11 is a closed end, the air inlet end 24, corresponding to the first injection pipe 2, of the base 11 is an open end, and a secondary air channel 10 communicating the outside with the fire outlet area of the first fire cover 3 is formed between the secondary air channel and the annular cavity 11. In addition, the gas mixing device also comprises a nozzle seat 8 arranged below the second gas mixing chamber 6, a first ejector 5 arranged in the center of the nozzle seat 8 and extending out of the mounting seat 20 above the nozzle seat 8, a second ejector arranged on the nozzle seat 8 and spaced from the first ejector 5, and a second injection pipe independent of the first injection pipe 2 and arranged in the second gas mixing chamber 6, wherein the gas inlet 41 of the second injection pipe is opposite to the second ejector, and the gas outlet 42 is communicated with the second gas mixing chamber 6. The conventional bottom cup positioned below the mounting seat 20 is eliminated by utilizing the nozzle seat 8, and the first ejector 5 and the second ejector are directly mounted through the nozzle seat 8, so that the first ejector 5 and the second ejector can directly supplement air through an air channel above the mounting seat 20, the supplement is convenient, and meanwhile, the sufficient air supplement amount can be ensured to promote the full combustion of the combustor; in addition, the conventional bottom cup positioned below the mounting seat 20 is eliminated, and meanwhile, the second injection pipe is skillfully arranged in the second gas mixing chamber 6, so that the overall height of the combustor can be reduced, and the potential safety hazard caused by gas leakage when the second injection pipe is connected by a seam can be avoided; the invention adopts a mode of a plurality of ejectors and a plurality of ejector pipes, overcomes the limitation that the ejector pipes are limited in the diameter range of the combustor to cause the size of the ejector pipes to be still short, ensures the primary air ejection capacity of the combustor and realizes large firepower. In this embodiment, the two second ejectors are respectively a first second ejector 30 and a second ejector 30 ', and are symmetrically arranged at two sides of the first ejector 5, and the two second ejection pipes are correspondingly arranged, respectively a first second ejection pipe 40 and a second ejection pipe 40', so as to prevent the overall height of the burner from being too high, and simultaneously supplement primary air on the mounting seat 20 and ensure sufficient amount of the primary air, the secondary air injection burner further comprises a primary air passage 50, and the primary air passage 50 is formed at a position, corresponding to the nozzle seat 8, on the outer ring wall surface 62 and is locally recessed inwards along the radial direction of the air mixing chamber; the inward concave outer ring wall surface 62 part is directly used as a separating part 620 for separating the primary air channel 50 and the secondary air channel 10, other separating parts are not needed to be additionally added, the structure is simple, the integral height of the burner is not too high, the structure is compact, and the separating part 620 is provided with an air inlet 41 of the second injection pipe and an air inlet end 24 of the first injection pipe 2. In addition, the bottom wall 63 of the second air mixing chamber 6 is recessed at least at one position to form a leg 60 at the other portion of the periphery of the primary air passage 50, in order to avoid the interference between the primary air passage 50 and the secondary air passage 10, the present embodiment is preferably at one position of the opposite side relative to the nozzle holder 8, for this reason, the space formed between the adjacent legs 60 communicates the secondary air passage 10 with the outside, and for preventing the interference when the primary air and the secondary air are supplemented, the secondary air passage 10 and the primary air passage 50 are provided independently of each other.

Simultaneously, because be the cavity in the stabilizer blade 60 that the depressed part formed and not only form the first notch 601 that holds first second and draw and penetrate pipe 40 and hold the second notch 602 that the second draws penetrated pipe 40', can also effectively reduce the whole height of combustor, in order to further make the gas pressure that the fire hole that second fire lid 7 set up along circumference flows even, set up the steady voltage piece 9 that is used for steady voltage second to mix the interior gas of gas chamber 6 in the second mixes the gas chamber 6, and steady voltage piece 9 can partially stretch into in first notch 601 and the second notch 602. Each stabilizer 9 includes a second plate 91, the center of the second plate 91 has a central hole 911, the hole wall of the central hole 911 protrudes upward to form a circle of convex wall 9111 that can surround the annular cavity 611, and the outer periphery of the second plate 91 extends in the horizontal direction and can partially cover the first notch 601 or the second notch 602. For the convenience of processing, the first second injection pipe 40 and the second injection pipe 40 'are formed by joining an upper pipe body 43 and a lower pipe body 44 which are matched in shape, wherein the lower pipe body 44 is formed by partially sinking the bottom of the supporting leg 60, the upper pipe body 43 is formed by recessing the outer periphery of the plate body from bottom to top, and the splicing seams of the first second injection pipe 40 and the second injection pipe 40' are both arranged inside the second gas mixing chamber 6 of the burner, so that the difficulty and the requirement of the sealing process are reduced.

Finally, the second fire cover 7 of the present invention also has particularity, including an annular body, an inner side edge and an outer side edge of an annular top wall 71 of the body respectively extend downwards to form an inner ring wall 72 engaged with the inner ring wall 61 and an outer ring wall 73 engaged with the outer ring wall 62, the outer ring wall 73 is provided with a main fire hole 731, in order to prevent the main fire hole 731 from being out of flame, the air inlet end 7312 of the main fire hole 731 is located at the bottom end of the outer ring wall 73, the air outlet end 7311 of the main fire hole 731 is located at the outer ring wall 73, the outer ring wall 73 is circumferentially provided with a first groove 732 below the air outlet end 7311 of the main fire hole 731, the bottom end of the outer ring wall 73 is further provided with a first flame stabilizing hole 733 communicated with the first groove 732, and the first groove 732 gradually inclines upwards from bottom to top and intersects with the main flame hole 731 to form a V-shaped flame stabilizing channel, so that the flame stabilizing effect is achieved, and meanwhile, liquid overflow can be prevented from flowing backwards. To prevent spillage from entering nozzle holder 8, outer ring wall 73 extends outwardly to form a protective umbrella that shields the nozzle holder 8 from the environment. This design brings the following benefits: the outer ring wall 73 can form a waterproof brim above the nozzle seat 8 to prevent overflow liquid from entering the first ejector 5 and the second ejector on the nozzle seat 8; the outer ring wall 73 can be made of heat insulating materials to prevent the flame heat generated by the flame discharged from the inner flame holes 321 and the second flame stabilizing holes 322 from interfering with the supplement of the primary air of the first injector 5 and the second injector on the nozzle seat 8; third, the outer ring wall 73 can be used as a "partition plate" to separate the secondary air for supplying the secondary air communicated with the inner flame holes 321 and the second flame stabilizing holes 322 of the second air mixing chamber 6 and the primary air for supplying the first injector 5 and the second injector on the nozzle holder 8. In order to allow the overflowing liquid to flow out of the nozzle holder 8 quickly, the outer ring wall 73 extends gradually downward from top to bottom radially outward of the second air-mixing chamber 6. In order to facilitate the placement of the first fire cover 3 and the flame stabilizing inner fire hole 321, the first fire cover 3 includes a top cover 31 and an outer annular wall 32 extending downward from the top cover 31, a ring of convex rings 1211 for the outer annular wall 32 to abut against is correspondingly disposed on the base 11, and the outer annular wall 32 is provided with the inner fire hole 321 communicated with the first air mixing chamber 1, a second flame stabilizing hole 322 located above the inner fire hole 321, and a third flame stabilizing hole 324 located below the inner fire hole 321.

The invention also provides a cooker using the above upper air intake burner, the liquid containing disc 200 is directly used as the mounting base 20, in order to reduce the heat conduction contacting with the panel 201 or the liquid containing disc 200 and improve the heat efficiency, the second air mixing chamber 6 uses the supporting connection mode of the supporting column 600, as mentioned above, the path of the primary air, the gas and the mixed primary air and gas in the burner is as follows, because the primary air is sucked into the first injector 5 of the nozzle base 8 from the outside by the kinetic energy of the gas itself, the premixed primary air and gas enter the first air mixing chamber 1 respectively, and the mixed primary air and gas finally pass through the inner flame hole 321, the second flame stabilizing hole 322 and the third flame stabilizing hole 324 of the first flame cover 3 and are ignited together with the secondary air of the external environment, so as to form the inner ring flame. The gas mixing device also comprises a second fire cover 7 of the outer fire which can enable a user to independently control the outer fire, primary air and fuel gas required by the outer fire are input into the second gas mixing chamber 6 independently of the first injection pipe 2 through a second injection pipe, meanwhile, the second gas mixing chamber 6 is separated from the first gas mixing chamber 1, and in this way, fluid separation of the second gas mixing chamber 6 and the first gas mixing chamber 1 is realized, and then the secondary air and the fuel gas can be independently supplied to allow the user to independently control the inflow of fuel mixture into the first injection pipe 2 and the second injection pipe, if the size of the outer fire and the central fire is adjusted, the first air inlet pipe 100 connected with the first injector and the adjusting valve of the main air inlet pipe 400 connected with the second air inlet pipe 200 and the third air inlet pipe 300 communicated with the first second injector 30 and the second injector 30 ', and the adjusting valve of the main air inlet pipe 400 connected with the second air inlet pipe 200 and the third air inlet pipe 300 are adjusted, and in addition, because the first injector 30 and the second injector 30' and the second injector and the third air inlet pipe 531 are opposite The symmetrical design makes the integral nozzle holder 8 in T shape, which is beneficial to the injection pressure balance of each injector.

Claims (18)

1. An upper intake air burner, characterized by: comprises that

The first injection pipe (2) comprises an air outlet end (23) and an air inlet end (24), and a first ejector (5) is matched at the air inlet end (24);

the base (11), the said base (11) surrounds the outside of tube wall of the said first injection tube (2);

the first fire cover (3) is arranged on the base (11), and a first gas mixing chamber (1) located in the center is formed between the first fire cover and the base (11);

the spiral body (4) is arranged between the base (11) and the first fire cover (3), a spiral channel which gradually spirally rises is arranged in the spiral body (4), the starting end of the spiral channel is communicated with the air outlet end (23) of the first injection pipe (2), and the end of the spiral channel is communicated with the first air mixing chamber (1).

2. The upper intake burner of claim 1, wherein: the gas mixing device is characterized by further comprising a mounting seat (20) and a second gas mixing chamber (6) which is arranged on the mounting seat (20) and located on the periphery of the first gas mixing chamber (1) and mutually independent, wherein the second gas mixing chamber (6) comprises an inner ring wall surface (61) and an outer ring wall surface (62) which are concentrically arranged at intervals, a bottom wall (63) for connecting the inner ring wall surface (61) and the outer ring wall surface (62) and a second fire cover (7) covering the upper portions of the inner ring wall surface (61) and the outer ring wall surface (62).

3. The upper intake burner of claim 2, wherein: the inner ring wall surface (61) is surrounded to form an annular cavity (611), the base (11) transversely penetrates through the annular cavity (611) and is arranged to be a closed end, the base (11) corresponds to the air outlet end (23) of the first injection pipe (2), the base (11) corresponds to the air inlet end (24) of the first injection pipe (2) and is an open end, and a secondary air channel (10) communicated with the outside and the fire outlet area of the first fire cover (3) is formed between the base and the annular cavity (611).

4. The upper intake burner of claim 3, wherein: the first ejector (5) is arranged on a nozzle seat (8) positioned below the second air mixing chamber (6), the first ejector (5) is arranged in the center of the nozzle seat (8) and extends out of the mounting seat (20) positioned above the nozzle seat (8), the first air mixing chamber further comprises second ejectors (30, 30 ') which are also arranged on the nozzle seat (8) and are spaced from the first ejector (5), and second injection pipes (40, 40') which are independent of the first injection pipes (2) and are arranged in the second air mixing chamber (6), wherein air inlets (41) of the second injection pipes (40, 40 ') are opposite to the second ejectors (30, 30'), and air outlets (42) are communicated with the second air mixing chamber (6).

5. The upper intake burner of claim 4, wherein: the secondary air mixing chamber further comprises a primary air channel (50), wherein the primary air channel (50) is formed at a position, corresponding to the nozzle seat (8), on the outer ring wall surface (62) and is locally recessed inwards along the radial direction of the second air mixing chamber (6); the inward recessed outer ring wall surface (62) is directly used as a separating part (620) for separating the primary air channel (50) and the secondary air channel (10), and an air inlet (41) of the second injection pipe and an air inlet (24) of the first injection pipe (2) are formed in the separating part (620).

6. The upper intake burner of claim 5, wherein: at least one part of the bottom wall (63) of the second air mixing chamber (6) is recessed to form a supporting leg (60) at other parts of the periphery of the primary air channel (50), the interval formed between the adjacent supporting legs (60) is communicated with the secondary air channel (10), and the secondary air channel (10) is independent from the primary air channel (50).

7. The upper intake burner of claim 6, wherein: a notch (601, 602) for accommodating the second injection pipe is formed in the supporting leg (60).

8. The upper intake burner of claim 7, wherein: and a pressure stabilizing piece (9) for stabilizing the pressure of the gas in the second gas mixing chamber (6) is arranged in the second gas mixing chamber (6), and the pressure stabilizing piece (9) can partially extend into the notches (601, 602).

9. The upper intake burner of claim 8, wherein: the pressure stabilizer (9) comprises a plate body (91), a central hole (911) is formed in the center of the plate body (91), the hole wall of the central hole (911) protrudes upwards to form a circle of convex wall (9111) capable of surrounding the annular cavity (611), and the outer periphery of the plate body (91) extends in the horizontal direction and can partially cover the notches (601, 602).

10. The upper intake burner of claim 9, wherein: the second injection pipe (40, 40') is formed by combining an upper pipe body (43) and a lower pipe body (44) which are adaptive in shape, wherein the lower pipe body (44) is formed by partially sinking the bottom of the supporting leg (60), and the upper pipe body (43) is formed by sinking the outer periphery of the plate body (91) from bottom to top.

11. The upper intake air burner according to any one of claims 2 to 10, wherein: the second fire cover (7) comprises an annular body, the inner edge and the outer edge of an annular top wall (71) of the body respectively extend downwards to form an inner ring wall (72) jointed with the inner ring wall surface (61) and an outer ring wall (73) jointed with the outer ring wall surface (62), and main fire holes (731) are formed in the outer ring wall (73).

12. The upper intake burner of claim 11, wherein: the gas inlet end (7312) of main fire hole (731) is located the bottom of outer lane wall (73), the end of giving vent to anger (7311) of main fire hole (731) be located outer lane wall (73), outer lane wall (73) in the end of giving vent to anger (7311) of main fire hole (731) below seted up first recess (732) circumferentially, still seted up on the bottom of outer lane wall (73) with first recess (732) be linked together first flame stabilizing hole (733).

13. The upper intake burner of claim 12, wherein: the first groove (732) is inclined upward gradually from bottom to top and intersects with the main fire hole (731).

14. The upper intake burner of claim 13, wherein: the outer ring wall (73) extends outwards to form a protective umbrella which is shielded above the nozzle seat (8).

15. The upper intake burner of claim 14, wherein: the outer ring wall (73) extends gradually downwards from top to bottom towards the radial direction of the second air mixing chamber (6).

16. The upper intake air burner according to any one of claims 1 to 10, wherein: the first fire cover (3) comprises a top cover (31) and an outer annular wall (32) extending downwards from the top cover (31), a circle of convex ring (1211) for abutting against the outer annular wall (32) is correspondingly arranged on the base (11) in a protruding mode, and an inner fire hole (321) communicated with the first air mixing chamber (1) and a second flame stabilizing hole (322) located above and/or below the inner fire hole (321) are formed in the outer annular wall (32).

17. Cooking hob with an upper inlet air burner according to any one of the claims 4 to 16, comprising a panel (201), characterized in that: the mounting seat (20) is a part of the panel (201).

18. Cooking hob with an upper inlet air burner according to any one of the claims 4 to 16, comprising a drip tray (200) located below the burner, characterized in that: the liquid containing tray (200) is used as the mounting seat (20).

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