CN216307776U - Upper air inlet burner and cooker applying same - Google Patents

Abstract

The utility model relates to an upper air inlet burner and a cooker using the same, comprising a mounting seat, an air mixing chamber arranged on the mounting seat, and a primary air inlet gap formed in a gap between the air mixing chambers of the mounting seat and used for mixing gas and primary air, wherein the upper air inlet burner is characterized in that: the utility model also comprises an injection pipe arranged in the primary air inlet gap, at least two ejectors are correspondingly arranged at the air inlet end of the injection pipe, at least one separator is also arranged at the air inlet end of the injection pipe, and the injection pipe cavities at the two sides of the separator are respectively opposite to the two corresponding ejectors. The utility model provides an upper air inlet burner, this upper air inlet burner draws the gas inlet end of penetrating the pipe to have two at least ejectors, and the quantity of this ejector increases can improve the upper air inlet burner who draws and penetrates the ability under the condition of the height that does not change whole combustor.

Description

Upper air inlet burner and cooker applying same

Technical Field

The utility model relates to the technical field of household kitchen utensils, in particular to an upper air inlet burner and a kitchen range using the same.

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 first air mixing chamber and the base when supplementing primary air, and therefore, the gap exists between the first 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 first 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 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 ensures that the connecting part of the outlet of the first injection pipe and the mixed gas channel is always bent sharply, and the injection resistance is obviously increased.

Therefore, in the existing patent, as the chinese utility model patent with patent number ZL201520047530.1 (with the publication number of CN 204534589U), it discloses an upper air inlet distributor, which comprises a fire distribution disc with a central air outlet and an outer air outlet, a gas mixing pipe communicated with the central air outlet and the outer air outlet is provided on the lower surface of the fire distribution disc, one end of the gas mixing pipe is open, a support frame is installed under the fire distribution disc, an air inlet nozzle connected with a gas pipeline and a gas nozzle corresponding to the gas mixing pipe are provided on the support frame, gas can be sprayed into the gas mixing pipe, an air inlet gap is left between the gas mixing pipe and the gas nozzle, and a support leg is provided at the bottom of the support frame, so that the distributor protrudes upwards, and the air inlet gap is exposed above the stove surface. But because it, because the air intake gap exposes to the top of the kitchen range, make more air can get into the gas-mixing pipe, consequently the gas can not appear the not enough situation of oxygen when the burning, make the abundant burning of gas, can avoid the production of carbon monoxide, can also abundant energy saving, still can not effectively improve the limitation that first ejector tube length is short partially, and still there is the gas pressure that can make first fire lid along the fire hole outflow of circumference setting uneven, thereby it is inhomogeneous to lead to the flame that goes out the fire circle that first fire lid produced, in order to avoid producing the inhomogeneous problem of flame, need make further improvement to current last air inlet combustor.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide an upper air inlet burner capable of improving the injection capability without changing the height of the whole burner, in view of the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide an upper air inlet burner capable of avoiding the occurrence of mutual contention and reasonable distribution of secondary air, in view of the above-mentioned current state of the art.

The third 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 utility model for solving the first technical problem is as follows: this go up air inlet burner includes:

a mounting seat;

the gas mixing chamber is arranged on the mounting seat and used for mixing gas and primary air;

a primary air intake gap formed in a gap between the mount and the air mixing chamber;

the method is characterized in that: also includes:

the ejector pipe is arranged in the primary air inlet gap, the air outlet end of the ejector pipe is communicated with the air mixing chamber, at least two ejectors are correspondingly arranged at the air inlet end of the ejector pipe, the air inlet end of the ejector pipe further comprises at least one separator, at least part of each separator is inserted in the air inlet end of the ejector pipe, and ejector pipe cavities on two sides of the separator are opposite to the two corresponding ejectors respectively. Wherein in order to avoid the influence each other between the sprayer, each separator is at least partially inserted and is established in the income gas port end of drawing penetrating the pipe, can avoid drawing the mutual interference between the initial stage air current thigh of penetrating, increases primary air supply volume, promotes to get into the air current thigh of drawing penetrating the pipe cavity inner chamber and the intermixture between the air for gas and air mixing are more abundant.

Furthermore, the fire cover comprises a fire cover body, wherein an annular peripheral wall of the fire cover body is provided with a first main fire hole and a second main fire hole which are arranged in an upper row and a lower row at intervals along the circumferential direction, a groove is circumferentially formed between the first main fire hole and the second main fire hole on the annular peripheral wall, a flame stabilizing hole which is intersected with the groove is further formed in the annular peripheral wall, and the flame stabilizing hole penetrates through the groove and is communicated with the first main fire hole and/or the second main fire hole. The annular peripheral wall of the fire cover is provided with double rows of main fire holes, namely a first main fire hole and a second main fire hole, and a pressure stabilizing part formed by a groove and a groove is arranged between the two rows of main fire holes.

In order to prevent the first main fire holes from being out of flame due to too fast air flow, it is preferable that the flame stabilizing holes are communicated with only the first main fire holes and not with the second main fire holes, and the flame stabilizing holes and the second main fire holes are sequentially staggered. The flame stabilizing hole is only communicated with the first main fire hole but not communicated with the second main fire hole, so that on one hand, the gas flowing out of the first main fire hole can be shunted, the gas flowing out of the first main fire hole is slowed down, the combustion of the gas is stable, and the gas is not easy to leave the flame; on the other hand, the flame stabilizing holes are connected into a circle of flame ring in the groove below the first main flame hole, so that the lower row of second main flame holes is stabilized, the flame stabilizing effect of the second main flame holes is good, the second main flame holes are pulled better, a better flame stabilizing effect is achieved, and the flame stabilizing holes and the second main flame holes are sequentially arranged in a staggered manner.

Furthermore, the annular peripheral wall of the fire cover body is provided with protruding parts at intervals along the circumferential direction corresponding to the second main fire holes, and the second main fire holes are correspondingly arranged on the protruding parts and between two adjacent protruding parts. The design of bulge can prevent when the lateral flow of overflow, and then can also guarantee to be located the secondary air supply of the main fire hole of second between two adjacent bulges.

In order to avoid the downward conduction of the combustion heat generated in the cooking process from top to bottom, the bottom of the injection pipe is preferably provided with a spacer.

In order to solve the third technical problem, the utility model also provides a cooker with the above upper air inlet burner, which is characterized in that: the mounting seat is a part of a cooker panel or a liquid containing disc positioned below the gas mixing chamber.

Compared with the prior art, the utility model has the advantages that: the utility model provides an upper air inlet burner, this upper air inlet burner draws the gas inlet end of penetrating the pipe to have two at least ejectors, and the quantity of this ejector increases can improve the upper air inlet burner who draws and penetrates the ability under the condition of the height that does not change whole combustor.

Drawings

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

FIG. 2 is a schematic view of the structure at the bottom of FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic view of the fire cover of FIG. 1 with the first fire cover omitted;

FIG. 5 is a partial cross-sectional view of FIG. 4;

FIG. 6 is a schematic structural diagram of a first fire cover in an embodiment of the present invention;

FIG. 7 is a partial cross-sectional view of FIG. 1;

FIG. 8 is a schematic structural view of a second fire cover in an embodiment of the present invention;

fig. 9 is a cross-sectional view of fig. 8.

Detailed Description

The utility model 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 comprises a mounting seat, a first air mixing chamber 1 arranged on the mounting seat, wherein the first air mixing chamber 1 is used for mixing gas and primary air, the first air mixing chamber 1 comprises an inner ring wall surface 11 and an outer ring wall surface 12 which are concentrically arranged at intervals, a bottom wall 13 connecting the inner ring wall surface 11 and the outer ring wall surface 12, and a first fire cover 2 covering the upper parts of the inner ring wall surface 11 and the outer ring wall surface 12; and still be formed with the air inlet clearance once in the clearance between mount pad and the first air mixing chamber 1, still including: the first injection pipe is positioned in the primary air inlet gap, the air outlet 30 of the first injection pipe is communicated with the first air mixing chamber 1, and the bottom wall 13 of the first air mixing chamber 1 is provided with a transverse L-shaped notch 131 corresponding to the air outlet 30 of the first injection pipe. In the upper air inlet burner, the bottom wall 13 of the first air mixing chamber 1 is provided with a transverse L-shaped notch 131 corresponding to the air outlet 30 of the first injection pipe, therefore, after the fuel gas and the primary air are injected from the first injection pipe, the fuel gas and the primary air flow through the respective L-shaped notches 131 and then enter the first air mixing chamber 1, because the air outlet of the circumferential part 131a of the L-shaped notch 131 is long and narrow, the air outlet speed is higher, and the interaction distance is long enough, the speed of the fuel gas and the primary air is reduced, the mixing is more sufficient, and the flame is more stable; and the air outlet on the radial part 131b of the L-shaped notch 131 is wide and short, so that an air wall with relatively large air outlet quantity and large thickness is formed, and the phenomenon that flame is uneven and even departs from the flame is prevented, so that the upper air inlet burner with the injection capacity improved under the condition of not changing the height of the whole burner is realized.

Specifically, in order to mix the gas and the primary air more uniformly, preferably, the transverse L-shaped notch 131 includes a circumferential portion 131a extending circumferentially along the outer ring wall surface 12 of the first gas mixing chamber 1 and a radial portion 131b connected to the circumferential portion 131a and extending radially inward toward the first gas mixing chamber 1, and after the gas and the primary air are ejected from the first ejector pipe, the gas and the primary air flow through the respective circumferential portions 131a and then enter the radial portions 131b, because the gas outlets of the circumferential portions 131a are long and narrow, the gas outlet speed is higher, and the interaction distance is long enough, so that the gas and the primary air speed is reduced, the mixing is more sufficient, and the flame is more stable; the air outlet on the radial portion 131b is wide and short, and forms an air wall with relatively large air outlet amount and large thickness, thereby preventing the phenomenon that the flame is not uniform and even departs from the flame. Along the first air current direction of drawing the penetrating pipe, the length of the circumference portion 131a of breach 131 is greater than the length of radial portion 131b, thereby constitute the section of accelerating of the gas mixture that primary air and gas formed, the width of the circumference portion 131a of breach 131 is less than the width of radial portion 131b, thereby constitute the buffer segment of the gas mixture that primary air and gas formed, wherein the section of accelerating can make the ejection speed of primary air and gas faster, improve and draw the ability of penetrating, and the buffer segment then can make the primary air and the gas that mix through the section of accelerating more evenly, speed gets into first gas mixing chamber 1 more slowly. In this embodiment, the width of the circumferential portion 131a of the notch 131 is 6mm, the width of the radial portion 131b of the notch 131 is 4mm, in addition, the first air mixing chamber 1 has a buffer cavity 10 below the notch 131, the air outlet 30 of the first injection pipe is in fluid communication with the first air mixing chamber 1 through the buffer cavity 10, wherein the first injection pipe is integrally connected with the first air mixing chamber 1, the first air mixing chamber 1 has the buffer cavity 10, the length of the first injection pipe is effectively increased by the buffer cavity 10, and meanwhile, the arrangement of the buffer cavity 10 enables the primary air/gas mixture injected from the air outlet 30 of the first injection pipe to have a buffer space, the primary air uniformly mixed by the buffer cavity 10 is mixed with the gas and enters the first air mixing chamber 1, so as to prevent the gas and the primary air from being mutually impacted by the convergence in different directions, further improving the uniformity of the mixing of the primary air and the gas, The primary air suction rate is improved, meanwhile, the kinetic energy loss can be effectively reduced, the kinetic energy loss is enabled to be uniformly diffused, so that stable and uniform flame can be kept for a fire outlet area supplied to the first fire cover 2 by the first air mixing chamber 1, the flame of the upper air inlet burner is short, uniform and powerful, the defects of yellow flame, tempering and the like cannot occur, and finally, the first air mixing chamber 1 and the first fire cover 2 are easy to detach and install and are convenient for a user to clean. In order to enable the primary air and the gas buffered by the buffer chamber 10 to enter the first gas mixing chamber 1 more quickly, the buffer chamber 10 preferably includes an inclined section 101 having a radial portion 131b gradually facing the notch 131 from bottom to top. In order to avoid the uneven gas pressure which makes the first fire cover 2 flow out along the fire holes arranged in the circumferential direction, thereby causing uneven flame of the fire ring generated by the first fire cover 2, it is preferable that the bottom wall 13 of the first gas mixing chamber 1 is provided with a uniform flow chamber 4 for uniformly mixing the gas formed by the primary air and the gas corresponding to the transverse L-shaped notch 131. The arrangement of the uniform flow chamber 4 can ensure that the gas and the primary air flowing into the first gas mixing chamber 1 can be uniformly dispersed to the fire hole of the first fire cover 2. The flow equalizing chamber 4 of the present embodiment includes a first wall portion 41 and a second wall portion 42 which are disposed on the bottom wall 13 and abut against the inner ring wall surface 11 and the outer ring wall surface 12, at least two first flow equalizing holes 411 are opened on the first wall portion 41, correspondingly, at least two second flow equalizing holes 421 are also opened on the second wall portion 42, and the first flow equalizing holes 411 and the second flow equalizing holes 421 are alternately disposed, so that the staying time of the primary air and the fuel gas in the flow equalizing chamber 4 is longer, and the mixing is more uniform. In order to increase the impact strength of the primary air and the fuel gas in the uniform flow chamber 4, the uniform flow chamber 4 further comprises a third wall portion 43 and a fourth wall portion 44 which are arranged on the first fire cover 2 and respectively abut against the first wall portion 41 and the second wall portion 42, wherein the first wall portion 41, the second wall portion 42, the third wall portion 43 and the fourth wall portion 44 of the uniform flow chamber 4 and a top wall corresponding to the first fire cover 2 jointly enclose a space isolated from the first gas mixing chamber 1, and the space can be far away from the first injection pipe gas outlet 30 to cause the kinetic energy loss of the fuel gas and the primary air, so that the fuel gas of the part can fluctuate violently, the gas outlet amount of the part of fire holes is increased sharply, the flame of the part of fire holes is elongated, the combustion is unstable, and even yellow flame appears. And the grid-type uniform flow chamber 4 can make the gas flow velocity reduce rapidly after the gas passes through the uniform flow chamber 4, reduce the kinetic energy loss when two gas streams collide, avoid the great change of the gas velocity, and make the flame burning in the place sufficient and stable.

In addition, in order to further improve the injection capacity of the upper air inlet burner, in addition to the mode of the added L-shaped notch 131, the injection capacity can be realized by increasing the number of the ejectors in the air inlet end of the injection pipe, wherein the inner ring wall surface 11 of the first air mixing chamber 1 extends towards the center to form a connecting plate 110, the inner periphery of the first air mixing chamber 1 is also provided with a second air mixing chamber 5, the second air mixing chamber 5 comprises an annular peripheral wall 51 arranged at the center of the connecting plate 110 and a second fire cover 52 covered on the annular peripheral wall 51, and a second injection pipe 6 is also arranged in the primary air inlet gap, the air outlet end of the second injection pipe 6 is communicated with a second gas mixing chamber 5, and the gas inlet end of the second injection pipe 6 is correspondingly provided with at least two ejectors, so that the injection capacity of the second injection pipe 6 is enhanced. And in order to avoid the mutual influence between the ejectors, the air inlet end of the second ejector pipe 6 further comprises at least one separator 61, each separator 61 is at least partially inserted into the air inlet end of the second ejector pipe 6, the ejector pipe cavities on the two sides of the separator 61 are respectively opposite to the two corresponding ejectors, each separator 61 is at least partially inserted into the air inlet end of the second ejector pipe 6, the mutual interference between the initial-stage air flow strands can be prevented from being ejected, the primary air supply amount is increased, the mutual mixing between the air flow strands entering the cavity of the ejector pipe cavity and the air is promoted, so that the gas and the air are mixed more fully, the separator 61 is only arranged in the second ejector pipe 6 in the embodiment, and certainly, the separator can also be arranged in the first ejector pipe. The second fire cover 52 on the second air mixing chamber 5 comprises a fire cover body, an annular peripheral wall 520 of the fire cover body is provided with a first main fire hole 521 and a second main fire hole 522 which are arranged in an upper row and a lower row at intervals along the circumferential direction, a groove 523 is circumferentially formed between the first main fire hole 521 and the second main fire hole 522, a flame stabilizing hole 524 intersecting with the groove 523 is further formed in the annular peripheral wall 520, and the flame stabilizing hole 524 penetrates through the groove 523 and is communicated with the first main fire hole 521 and/or the second main fire hole 522. The annular peripheral wall of the second fire cover 52 is provided with the double rows of main fire holes, namely the first main fire hole 521 and the second main fire hole 522, and the pressure stabilizing part formed by the groove 523 and the groove 523 is arranged between the two rows of main fire holes, so that the combustion efficiency of the gas stove can be obviously improved while the first main fire hole 521 and the second main fire hole 522 are stabilized. However, in order to prevent the first main fire hole 521 from being out of flame due to too fast airflow, preferably, the flame stabilizing holes 524 are only communicated with the first main fire hole 521 and not communicated with the second main fire hole 522, and the flame stabilizing holes 524 and the second main fire hole 522 are sequentially arranged in a staggered manner, and since the flame stabilizing holes 524 are only communicated with the first main fire hole 521 and not communicated with the second main fire hole 522, on one hand, the gas flowing out of the first main fire hole 521 can be branched, so that the gas flowing out of the first main fire hole 521 is slowed down, the combustion of the gas is stabilized, and the gas is not easy to be out of flame; on the other hand, the flame stabilizing holes 524 are connected into a circle of flame ring in the groove 523 below the first main flame hole 521, so as to play a flame stabilizing role for the second main flame hole 522 in the lower row, so that the flame stabilizing effect of the second main flame hole 522 is good, and in order to better pull the second main flame hole 522 and play a better flame stabilizing effect, the flame stabilizing holes 524 and the second main flame hole 522 are sequentially arranged in a staggered manner. In addition, the annular peripheral wall of the fire cover body is provided with projections 525 at intervals along the circumferential direction corresponding to the second main fire hole 522, and the second main fire hole is correspondingly arranged on each projection 525 and between two adjacent projections 525. The design of the protruding portions 525 can prevent the lateral flow of the overflowing liquid, and further ensure the secondary air supply of the second main fire holes 522 between two adjacent protruding portions 525.

Finally, the embodiment also provides a cooker using the above-mentioned upper-air-intake burner, where the mounting seat is a part of a cooker panel or a liquid containing tray located below the first air mixing chamber 1 (where the mounting seat or the liquid containing tray is a structure commonly adopted by those skilled in the art, and the structure is not shown in the drawing and is not described again).

To sum up, the first injection pipe of the upper air inlet burner is provided with a first outer injection pipe 3 ' and a second outer injection pipe 3 "which are symmetrically arranged, the first outer injection pipe 3 ' and the second outer injection pipe 3" are both arranged integrally with the first air mixing chamber 1, a partition wall is arranged between the air outlets 30 of the first outer injection pipe 3 ' and the second outer injection pipe 3 "corresponding to the first air mixing chamber 1, and two sides of the partition wall correspond to the inclined sections 101 in the buffer chamber, so that the mixed gas formed by the primary air and the fuel gas injected from the first outer injection pipe and the second outer injection pipe can be mixed more uniformly after being buffered by the buffer chamber 10, and when the mixed gas impacts the inclined sections 101, the mixed gas of the first outer injection pipe and the second outer injection pipe is in a hedging form and is respectively folded after hedging, so that the static pressure of the fuel gas and the primary air is converted into dynamic pressure, and then the outlet is from the L-shaped gap 131 with a relatively small outlet area, because the air outlet of the circumferential part 131a of the L-shaped notch 131 is long and narrow, the air outlet speed is higher, and the interaction distance is long enough, the speed of the gas and the primary air is reduced, the mixing is more sufficient, and the flame is more stable; the air outlet on the radial part 131b is wide and short, so that an air wall with relatively large air outlet quantity and large thickness is formed, and the phenomenon that flame is not uniform or even flame is separated is prevented, so that under the condition of energy loss after the gas is impacted by the inclined section 101, the gas and primary air can be mixed more sufficiently, the flow rate is more uniform, namely, the combustion is more sufficient, and the flame is more uniform; and the second that is located between first outer ejector pipe 3 'and the second outer ejector pipe 3 "draws the mode that the gas inlet end that penetrates of pipe 6 increases separator 61 through increasing the sprayer, realizes drawing the improvement of ability, draws the pipe 3" and the second outer ejector pipe 3 "and the second in addition in order to prevent that first outer ejector pipe 3' and the second from drawing the burning heat conduction that the pipe 6 produced to the mount pad in the combustion process, can draw under the pipe each and draw and be provided with thermal-insulated spacer 600.

Claims (6)

1. An upper intake air burner comprising:

a mounting seat;

the gas mixing chamber is arranged on the mounting seat and used for mixing gas and primary air;

a primary air intake gap formed in a gap between the mount and the air mixing chamber;

the method is characterized in that: also includes:

the ejector pipe is arranged in a primary air inlet gap, the air outlet end of the ejector pipe is communicated with the air mixing chamber, at least two ejectors are correspondingly arranged at the air inlet end of the ejector pipe, the air inlet end of the ejector pipe further comprises at least one separator (61), at least part of each separator (61) is inserted into the air inlet end of the ejector pipe, and the ejector pipe cavities on two sides of the separator (61) are opposite to the two corresponding ejectors respectively.

2. The upper intake burner of claim 1, wherein: the fire cover comprises a fire cover body, wherein an annular peripheral wall of the fire cover body is provided with a first main fire hole (521) and a second main fire hole (522) which are arranged in an upper row and a lower row at intervals along the circumferential direction, a groove (523) is circumferentially formed in the annular peripheral wall between the first main fire hole (521) and the second main fire hole (522), a flame stabilizing hole (524) intersected with the groove (523) is further formed in the annular peripheral wall, and the flame stabilizing hole (524) penetrates through the groove (523) and is communicated with the first main fire hole (521) and/or the second main fire hole (522).

3. The upper intake burner of claim 2, wherein: the flame stabilizing holes (524) are communicated with the first main fire holes (521) only and not communicated with the second main fire holes (522), and the flame stabilizing holes (524) and the second main fire holes (522) are sequentially arranged in a staggered manner.

4. The upper intake burner of claim 3, wherein: the part of the annular peripheral wall of the fire cover body, which corresponds to the second main fire hole (522), is provided with protruding parts (525) at intervals along the circumferential direction, and the second main fire hole (522) is correspondingly arranged on each protruding part (525) and between two adjacent protruding parts (525).

5. The upper intake air burner according to any one of claims 1 to 4, wherein: the bottom of drawing the penetrating pipe is provided with spacer block (600).

6. A cooking range using the upper air inlet burner as claimed in any one of claims 1 to 5, wherein: the mounting seat is a part of a cooker panel or a liquid containing disc positioned below the gas mixing chamber.

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