CN112013388B - Burner for gas stove - Google Patents

Burner for gas stove Download PDF

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Publication number
CN112013388B
CN112013388B CN201910468438.5A CN201910468438A CN112013388B CN 112013388 B CN112013388 B CN 112013388B CN 201910468438 A CN201910468438 A CN 201910468438A CN 112013388 B CN112013388 B CN 112013388B
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CN
China
Prior art keywords
cavity
burner
wall
base
gas
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Application number
CN201910468438.5A
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Chinese (zh)
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CN112013388A (en
Inventor
邵海忠
郑军妹
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Priority to CN201910468438.5A priority Critical patent/CN112013388B/en
Publication of CN112013388A publication Critical patent/CN112013388A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • F23D14/58Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • F23D14/64Mixing devices; Mixing tubes with injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/72Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76Protecting flame and burner parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/14Spillage trays or grooves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00Stoves or ranges for gaseous fuels
    • F24C3/08Arrangement or mounting of burners
    • F24C3/085Arrangement or mounting of burners on ranges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D2203/00Gaseous fuel burners
    • F23D2203/007Mixing tubes, air supply regulation

Abstract

The invention relates to a burner for a gas stove, which comprises a base and a burner, wherein the base is provided with a concave cavity with an upward opening, and the center of the concave cavity is provided with an ejector; the connector, including the plate body of suspension above the base, the periphery of plate body covers cavity, its characterized in that: the central position of the plate body is provided with an injection pipe which extends downwards and is vertically arranged, the injection pipe extends into the concave cavity of the base and is opposite to the ejector, and a gap between the plate body and the base forms a first inlet which is communicated with the concave cavity and the outside so as to introduce primary air into the concave cavity of the base from the outside; compared with the prior art, the invention has the advantages that the advantage of up-down air inlet can be realized, the respective defects of the up-down air inlet can be overcome, and the strong universality is realized.

Description

Burner for gas stove
Technical Field
The invention relates to the field of household kitchen utensils, in particular to a burner for a gas stove.
Background
The existing burner is a gas system commonly used for a household gas stove and an integrated stove, the main purpose is to supply heat to food or water in the appliance, the existing burner is generally divided into a lower air inlet burner and an upper air inlet burner according to a primary air inlet mode, a bottom shell of the lower air inlet burner is provided with a hole, the bottom shell is fixed on a cabinet, and air enters the bottom shell through a bottom shell hole opening gap and is then sucked by negative pressure. Primary air is sucked into the bottom shell from the outside of the bottom shell through the opening of the bottom shell, and then is sucked into the air suction inlet due to negative pressure of the nozzle, and the air suction inlet is arranged below the panel, so that in frequent opening of the cabinet door of the cabinet, the change of the air injection amount can be induced due to instantaneous extraction, and therefore, the instantaneous change of the primary air, particularly inner ring fire, is caused, and the thermocouple is generally arranged at the position of the inner ring fire, so that the cabinet door is frequently extracted, and potential safety hazards such as flameout are easily caused. Therefore, the problem of easy flameout can be well solved because the primary air is directly fed on the panel, but the primary air is generally fed into the upper air feeding burner by adopting a multi-nozzle design, the injection pipe is generally short, the premixing is insufficient after the primary air is fed, the gas combustion is insufficient, the gas combustion working condition is influenced, yellow flame is easily generated, and flame separation is caused, for example, the Chinese utility model patent ZL201520936922.3 (No. CN205227321U) discloses a novel upper air feeding burner, an inner ring air inlet channel and an outer ring air inlet channel are arranged on a burner base, an inner ring nozzle is arranged at one end of the inner ring air inlet channel communicated with a base cavity, an outer ring nozzle is arranged at one end of the outer ring air inlet channel communicated with the base cavity, and in order to avoid the overflow from flowing back into the inner ring air inlet channel or the outer ring air inlet channel, thereby blocking the inner ring nozzle and the outer ring nozzle, taking the inner ring nozzle as an example, as shown in the attached drawing 2 of the patent specification, an inner injection pipe is arranged opposite to the inner ring nozzle, one end of the inner injection pipe is opposite to the inner ring nozzle, the other end of the inner injection pipe is communicated with the inner ring gas channel, the inner injection pipe vertically extends downwards to the base cavity, the lower end of the inner injection pipe is separated from the inner ring nozzle by a certain distance for supplementing primary air, the inner fire cover seat, the inner injection pipe and the upper base cover are integrally formed, the inner fire cover seat and the inner injection pipe are arranged on the upper end surface of the boss, soup falls on the end surface of the boss and cannot easily enter the base cavity when being sprinkled, but once overflowing liquid enters the inner injection pipe through the fire hole of the inner ring fire cover, the inner ring nozzle can still be blocked, and in order to solve the problems that the load of the upper air inlet burner cannot be large, overflowing liquid easily blocks the nozzle and the lower air inlet burner is easy to extinguish.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a burner for a gas range, which is not easy to cause flameout, in view of the above-mentioned prior art.
The second technical problem to be solved by the present invention is to provide a burner for a gas stove, which can effectively improve the mixing uniformity of primary air and fuel gas, 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 burner for a gas stove, which is not easy to generate yellow flame and weak fire, 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 a burner for a gas range, in which an injector is not easily blocked, in view of the above-mentioned prior art.
In order to solve the first technical problem, the technical scheme adopted by the invention is as follows: this a combustor for gas-cooker including:
the base is provided with a concave cavity with an upward opening, and the center of the concave cavity is provided with an ejector;
the connector, including the suspension in the plate body above the base, the periphery of plate body is along covering cavity, its characterized in that:
the central position of the plate body is provided with an injection pipe which extends downwards and is vertically arranged, the upper end opening of the injection pipe is an air outlet end, the lower end opening of the injection pipe is an air inlet end and extends into the cavity of the base to be opposite to the ejector, and a gap between the plate body and the base forms a first inlet which is communicated with the cavity and the outside so as to introduce primary air into the cavity of the base from the outside; the part of the base below the air inlet end of the injection pipe is at least partially provided with a through hole communicated with the concave cavity, and the through hole forms a second inlet for introducing primary air into the concave cavity of the base from the outside.
In order to realize the relative independence of the first inlet and the second inlet for supplementing primary air to the ejector, a partition is further arranged in the cavity of the base and can divide the part of the cavity of the base below the air inlet end into two relatively independent spaces which are respectively communicated with the first inlet and the second inlet. The burner has the characteristic that primary air of the upper air inlet burner enters air from the upper part of the panel and the characteristic that primary air of the lower air inlet burner enters air from the lower part of the panel, so that the lower air inlet burner is prevented from being easily flameout due to frequent pulling-out of the cabinet door.
In order to avoid the blockage of the ejector by the overflowing liquid, the partition is an annular first horizontal partition plate, the inner side end of the first horizontal partition plate is surrounded by an opening for exposing the ejector, and the outer side end of the first horizontal partition plate is connected to the base. The first horizontal partition is disposed above the ejector and has an opening through which the ejector is exposed, for which purpose, upon inflow of a spill through the ejector pipe, the spill flows onto the first horizontal partition.
Preferably, in order to avoid the blockage of the ejector by the overflow flowing in through the ejector pipe, the inner side end of the first horizontal partition plate is positioned in the lower end opening of the ejector pipe. Because of the medial extremity of the first horizontal baffle is located in the lower end opening of the ejector pipe, therefore, the overflow flowing into the ejector pipe is easy to be guided to the first horizontal baffle due to the wall-approaching effect and the blocking of the medial extremity of the first horizontal baffle.
In order to discharge the overflow liquid guided to the first horizontal partition plate out of the base, preferably, a third inlet communicated with the cavity is formed in a portion of the base above an outer end of the first horizontal partition plate. The third inlet can also serve as an air inlet that communicates the cavity with the outside to introduce primary air from the outside into the cavity of the susceptor.
To solve the second technical problem, it is preferable that a first gap is provided between a lower surface of the first horizontal partition and a bottom wall of the base, and the first gap communicates with the first inlet. The first clearance can make the primary air that gets into this first clearance distribute at the periphery of sprayer more evenly, thereby can make the gas more directly carry out the mixing of primary air with the primary air after first clearance is even better under the effect of sprayer, avoid gas and primary air to carry out the striking 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 inhalation rate, can also effectively reduce the kinetic energy loss, thereby make this flame of the combustor that has last air intake combustor characteristics short, evenly and powerful, yellow flame can not appear, defects such as tempering.
In order to better enable overflowing liquid guided to the first horizontal partition plate to be discharged out of the base, the first horizontal partition plate gradually inclines from the outer side end to the inner side end from outside to inside and upwards. Meanwhile, the arrangement of the first horizontal partition plate can accelerate the external primary air to be guided to the first inlet and then supplemented to the upper part of the ejector.
Further, the method also comprises the following steps:
the fire cover is arranged on the connecting body, and a first gas mixing chamber positioned in the center and a second gas mixing chamber positioned on the periphery are formed between the fire cover and the connecting body; the first gas mixing chamber corresponds to the injection pipe and is used for mixing primary air and fuel gas; and
and the transmission channel is used for transmitting the mixed primary air and the mixed fuel gas from the first gas mixing chamber to the second gas mixing chamber.
In order to avoid overflowing liquid from entering the ejector pipe, the ejector pipe is of a sandwich structure and comprises a central cavity positioned in the center and a peripheral cavity surrounding the central cavity; the lower end opening of the central cavity is opposite to the ejector, and the upper end opening of the central cavity is communicated with the first gas mixing chamber; the lower end opening of the peripheral chamber is communicated with the third inlet of the base, and the upper end of the peripheral chamber is opened to be an open end. Because the lower end opening of the peripheral chamber is an open end and is communicated with the third inlet of the base, when the overflowing liquid enters the peripheral chamber, the overflowing liquid can directly flow out of the third inlet, and at the moment, the third inlet can form a discharging port of the overflowing liquid; the peripheral cavity can lead liquid and overflow, air can be supplied to the ejector in an air inlet mode, heat transfer of combustion heat generated by the second gas mixing chamber in the combustion process to the ejector pipe can be reduced, and heat transfer of the first gas mixing chamber to the ejector is further reduced.
To solve the third technical problem, it is preferable that a lower end edge of the peripheral wall of the peripheral chamber is higher than a lower end edge of the peripheral wall of the central chamber. This design has two effects, can avoid the overflow that flows through the periphery cavity to block up the sprayer because of blockking of the perisporium lower limb of central cavity, and secondly the perisporium lower limb of central cavity can lengthen with the distance of sprayer to the reinforcing draws the ejector tube and draws the ability of penetrating primary air and gas, avoids the yellow flame that the primary air intake back mixes the not abundant and produce, leaves the flame phenomenon.
In order to solve the fourth technical problem, preferably, an annular second horizontal partition plate is disposed between the peripheral chamber and the central chamber, and the peripheral chamber and the second horizontal partition plate together form an overflow cavity for storing overflow. Thus, the overflow into the peripheral chamber can be blocked by the second horizontal partition to completely avoid the overflow into the peripheral chamber from affecting the ejector.
In order to avoid the overflow liquid from being accumulated in the peripheral cavity, at least a part of the peripheral wall of the peripheral cavity above the second horizontal partition plate is provided with an outlet for the overflow liquid to flow out.
The second air mixing chamber can be formed in the following manner: the fire lid is including outer loop fire lid, the connector still including with the outer lane wall that the upper end concentric interval set up on the periphery wall of periphery cavity and the diapire of connecting the upper end of periphery wall and outer lane wall, the upper end of the periphery wall of periphery cavity, outer lane wall, diapire and outer loop fire lid enclose jointly and establish into the second gas mixing chamber.
Further, the outer ring fire cover comprises an annular top wall, an inner ring wall extending vertically or obliquely downwards from the inner side edge of the annular top wall, and an outer ring wall extending vertically or obliquely downwards from the outer side edge of the annular top wall, the inner ring wall abuts against the upper end of the outer peripheral wall of the peripheral cavity, the outer ring wall abuts against the outer ring wall surface of the connector, and outer fire holes communicated with the second gas mixing chamber are formed in the outer ring wall at intervals along the circumferential direction.
In order to avoid overflowing liquid from blocking the outer fire hole, the outer periphery of the annular top wall of the outer ring fire cover extends outwards to form a circle of first waterproof eaves for shielding the outer fire hole.
In order to avoid the wall-approaching effect of the overflow liquid flowing down from the first waterproof eaves, the overflow liquid may still flow down to a gap between the plate body of the connector and the base along the outer ring wall surface of the connector to form a first inlet which communicates the cavity with the outside to introduce the primary air into the cavity of the base from the outside. Thus, overflow liquid flowing down from the first waterproof eaves is far away from the first inlet through the outer convex edge of the convex ring due to the wall leaning effect.
Preferably, in order to avoid the overflow from the first waterproof eaves flowing down passing through the outer flange of the collar due to the wall-seeking effect, it is still possible to block the first inlet, and an inner step is provided between the lower flange of the collar and the bottom wall of the connecting body. The inner step can further weaken the blockage of the first inlet by the overflowing liquid, so that the convex ring has the double-insurance function of preventing the overflowing liquid from blocking the first inlet.
Further, the fire cover also comprises an inner ring fire cover, the inner ring fire cover comprises a top wall and an annular peripheral wall extending downwards from the outer periphery of the top wall, and the annular peripheral wall is provided with inner fire holes communicated with the second gas mixing chamber at intervals along the circumferential direction.
In order to prevent the inner fire hole of the inner ring fire cover from being blocked by overflowing liquid, a circle of second waterproof eaves used for shielding the inner fire hole extends outwards from the outer peripheral edge of the top wall of the inner ring fire cover. Simultaneously, the second waterproof eaves also have the effect of guiding the overflowing liquid to the peripheral cavity.
Compared with the prior art, the invention has the advantages that a brand-new bottom cup structure is designed, the first inlet and the second inlet of the base enable the burner to have the characteristic that primary air of the upper air inlet burner enters air from the upper side of the panel, and therefore the characteristic that the lower air inlet burner is easy to extinguish due to frequent drawing-out of the cabinet door is avoided; in addition, the second inlet is not only an inlet for leading external primary air into the cavity of the base but also a heat dissipation port for realizing effective heat dissipation of the ejector, and can overcome the defect that the distance between an injection pipe of the upper air inlet burner and the ejector is too close to cause large heat transfer to the ejector.
Drawings
FIG. 1 is a schematic view of a burner according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a cross-sectional view at an angle of FIG. 1;
FIG. 4 is a cross-sectional view at another angle from FIG. 1;
FIG. 5 is a schematic view of an angle of a connector according to an embodiment of the present invention;
FIG. 6 is a schematic view of another angle of a connector according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view at an angle of FIG. 5;
fig. 8 is a cross-sectional view at another angle of fig. 5.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in FIGS. 1 to 8, the preferred embodiment of the present invention is shown. The burner for the gas stove in the embodiment comprises a base 1, wherein the base 1 is provided with a cavity 11 with an upward opening, and an ejector 2 is arranged in the center of the cavity 11; the connecting body 3 comprises a plate body suspended above the base 1, the periphery of the plate body covers the cavity 11, the central position of the plate body is provided with an ejection pipe 31 which extends downwards and is vertically arranged, the upper end opening of the ejection pipe 31 is an air outlet end 311, the lower end opening of the ejection pipe 31 is an air inlet end 312 and extends into the cavity 11 of the base 1 to be opposite to the ejector 2, and a gap between the plate body and the base 1 forms a first inlet 4 which is communicated with the cavity 11 and the outside to introduce primary air into the cavity 11 of the base 1 from the outside; at least part of the base 1 below the air inlet end 312 of the ejector pipe 31 is provided with a through hole communicated with the cavity 11, and the through hole is formed as a second inlet 12 for introducing primary air into the cavity 11 of the base 1 from the outside. The first inlet 4 and the second inlet 12 of the base 1 enable the burner to have the characteristic that primary air of an upper air inlet burner enters air from the upper part of the panel 20, so that the characteristic that the lower air inlet burner is easy to extinguish due to frequent pulling-out of a cabinet door is avoided; in addition, the second inlet 12 is not only an inlet for introducing external primary air into the cavity 11 of the base 1, but also a heat dissipation port for realizing effective heat dissipation of the ejector 2, and can overcome the defect that the ejector pipe 31 of the upper air inlet burner is too close to the ejector 2, so that the ejector 2 has large heat conductivity.
In order to realize the relative independence of the first inlet 4 and the second inlet 12 for supplementing primary air to the ejector 2, a partition is also arranged in the cavity 11 of the base 1, and the partition can divide the part of the cavity 11 of the base 1 below the air inlet end 312 into two relatively independent spaces which are respectively communicated with the first inlet 4 and the second inlet 12, so that the burner of the invention has the characteristic that the primary air of an upper air inlet burner enters from the upper part of the panel 20, and the primary air of a lower air inlet burner enters from the lower part of the panel 20, thereby avoiding the characteristic that the lower air inlet burner is easy to extinguish due to frequent drawing of a cabinet door. In order to avoid the blockage of the ejector 2 by the spilled liquid, the partition is a first horizontal partition 5 in the shape of a ring, the inner end 51 of the first horizontal partition 5 encloses an opening 511 for exposing the ejector 2, the outer end 52 of the first horizontal partition 5 is connected to the base 1, the first horizontal partition 5 is arranged above the ejector 2 and has an opening 511 for exposing the ejector 2, and therefore, when the spilled liquid flows in through the ejector pipe 31, the spilled liquid can flow in onto the first horizontal partition 5. Preferably, in order to avoid the overflow flowing in through the injection pipe 31 from blocking the injector 2, the inner end 51 of the first horizontal partition plate 5 is located in the lower opening of the injection pipe 31, and the overflow flowing into the injection pipe 31 is easily guided to the first horizontal partition plate 5 due to the wall approaching effect. In order to discharge the overflow guided to the first horizontal partition 5 out of the base 1, it is preferable that a third inlet 13 communicating with the cavity 11 is opened at a portion of the base 1 above the outer end 52 of the first horizontal partition 5, and the first horizontal partition 5 can be used as primary air entering the cavity 11 of the base 1 through the third inlet 13 and better guided to the ejector 2. In addition, a first gap 50 is formed between the lower surface of the first horizontal partition plate 5 and the bottom wall 33 of the base 1, the first gap 50 is communicated with the first inlet 4, the first gap 50 enables primary air entering the first gap 50 to be more uniformly distributed on the periphery of the ejector 2, so that primary air mixing can be better performed on gas more directly and the primary air uniformly distributed through the first gap 50 under the action of the ejector 2, the gas and the primary air are prevented from colliding with each other due to convergence in different directions, the uniformity of mixing of the primary air and the gas is further improved, the kinetic energy loss can be effectively reduced while the suction rate of the primary air is improved, and accordingly, the burner with the characteristics of the upper air-inlet burner is short, uniform and powerful, and the defects of yellow flame, tempering and the like cannot occur. In order to better enable the overflowing liquid guided to the first horizontal partition 5 to be discharged out of the base 1, the first horizontal partition 5 gradually inclines from the outside to the inside from the outside end 52 to the inside end 51, and the arrangement of the first horizontal partition 5 can accelerate the outside primary air to be guided to the first inlet 4 and then be supplemented to the upper part of the ejector 2.
The burner of the embodiment further comprises a fire cover arranged on the connecting body 3, a first gas mixing chamber 70 positioned in the center and a second gas mixing chamber 80 positioned on the periphery are formed between the fire cover and the connecting body 3, and the first gas mixing chamber 70 corresponds to the injection pipe 31 and is used for mixing primary air and fuel gas; and a transfer passage 9 for transferring the mixed primary air and gas from the first gas mixing chamber 70 to the second gas mixing chamber 80. In order to avoid the overflow from entering the ejector pipe 31, the ejector pipe 31 is of a sandwich structure and comprises a central chamber 313 positioned in the center and a peripheral chamber 314 surrounding the central chamber 313; the lower end opening of the central chamber 313 is opposite to the ejector 2, and the upper end opening of the central chamber 313 is communicated with the first gas mixing chamber 70; the lower end opening of the peripheral chamber 314 is communicated with the third inlet 13 of the base 1, the upper end of the peripheral chamber 314 is opened as an open end, and since the lower end opening of the peripheral chamber 314 is opened as an open end and is communicated with the third inlet 13 of the base 1, for this reason, when the overflowing liquid enters the peripheral chamber 314, the overflowing liquid can directly flow out from the third inlet 13, and at this time, the third inlet 13 can form a discharge port of the overflowing liquid; the peripheral chamber 314 can guide liquid and overflow, can also supply air to the ejector 2 by air, and can also reduce the heat transfer of the combustion heat generated in the combustion process of the second gas mixing chamber 80 to the ejector pipe 31, thereby reducing the heat transfer of the first gas mixing chamber 70 to the ejector 2. The design has two functions, namely, the lower end edge of the peripheral wall 3141 of the peripheral cavity 314 is higher than the lower end edge of the peripheral wall 3131 of the central cavity 313, so that the overflow flowing out of the peripheral cavity 314 can be prevented from blocking the ejector 2 due to the blocking of the lower end edge of the peripheral wall 3131 of the central cavity 313, the distance between the lower end edge of the peripheral wall 3131 of the central cavity 313 and the ejector 2 can be increased, the ejection capacity of the ejector pipe 31 for ejecting primary air and fuel gas is enhanced, and yellow flame and flame leaving phenomena caused by insufficient premixing of the primary air after the primary air enters are avoided. An annular second horizontal partition 10 is further arranged between the peripheral chamber 314 and the central chamber 313, and the peripheral chamber 314 and the second horizontal partition 10 together form a overflowing chamber 3140 for storing overflowing liquid, so that overflowing liquid entering the peripheral chamber 314 can be blocked by the second horizontal partition 10, and the overflowing liquid entering the peripheral chamber 314 is completely prevented from affecting the ejector 2. In order to avoid the overflow from accumulating in the peripheral chamber 314, an outlet 3142 for the overflow to flow out is at least partially opened on the peripheral wall 3141 of the peripheral chamber 314 above the second horizontal partition 10.
The second air-mixing chamber 80 of the present embodiment is configured in the following manner: the fire cover comprises an outer ring fire cover 8, the connector 3 further comprises an outer ring wall surface 32 and a bottom wall 33, the outer ring wall surface 32 is concentrically arranged with the upper end of the outer peripheral wall 3141 of the outer peripheral cavity 314 at an interval, the bottom wall 33 is connected with the upper end of the outer peripheral wall 3141 and the outer ring wall surface 32, and the upper end of the outer peripheral wall 3141 of the outer peripheral cavity 314, the outer ring wall surface 32, the bottom wall 33 and the outer ring fire cover 8 are jointly surrounded to form a second gas mixing chamber 80. The outer ring fire cover 8 includes a ring top wall 81, an inner ring wall 82 extending vertically or obliquely downward from the inner edge of the ring top wall 81, and an outer ring wall 83 extending vertically or obliquely downward from the outer edge of the ring top wall 81, the inner ring wall 82 abuts against the upper end of the outer peripheral wall 3141 of the outer peripheral cavity 314, the outer ring wall 83 abuts against the outer ring wall 32 of the connector 3, and the outer ring wall 83 is provided with outer fire holes 831 communicating with the second gas mixing chamber 80 at intervals along the circumferential direction. In order to avoid the overflow liquid from blocking the outer fire hole 831, the outer periphery of the annular top wall 81 of the outer ring fire cover 8 extends outwards to form a circle of first waterproof eaves 811 for shielding the outer fire hole 831. Finally, in order to avoid the wall-sinking effect of the spilled liquid flowing down from the first waterproof eaves 811, it is still possible to form a first inlet 4 communicating the cavity 11 with the outside to introduce the primary air from the outside into the cavity 11 of the base 1 by flowing down along the outer ring wall 32 of the connector 3 to the gap between the plate body of the connector 3 and the base 1, and preferably, the bottom wall 33 of the outer fire cover 8 extends outward to form a circle of convex ring 311, the convex ring 311 includes an upper convex edge 3111 and a lower convex edge 3112 opposite to the first waterproof eaves 811, and an outer convex edge 3113 connecting the convex edge 3111 and the lower convex edge 3112, the outer convex edge 3113 is inclined downward gradually, the first waterproof eaves 811 is closer to the outer ring wall 32 of the connector 3 than the outer convex edge 3113, so that the spilled liquid flowing down from the first waterproof eaves 811 is away from the first inlet 4 by the outer convex edge 3113 of the convex ring 311 due to the wall-sinking effect. Preferably, in order to prevent the overflow flowing down from the first waterproof eaves 811 from passing through the outer convex edge 3113 of the convex ring 311 due to the wall-approaching effect, the first inlet 4 may still be blocked, and an inner step 3114 is provided between the lower convex edge 3112 of the convex ring 311 and the bottom wall 33 of the connecting body 3, and the inner step 3114 can further reduce the blockage of the first inlet 4 by the overflow, so that the convex ring 311 has a double-safety function of preventing the overflow from blocking the first inlet 4. The fire cover of the embodiment further comprises an inner ring fire cover 7, the inner ring fire cover 7 comprises a top wall 71 and an annular peripheral wall 72 extending downwards from the outer periphery of the top wall 71, and the annular peripheral wall 72 is provided with inner fire holes 721 communicated with the second air mixing chamber 80 at intervals along the circumferential direction. In order to prevent the inner fire hole 721 of the inner fire cover 7 from being blocked by the overflowing liquid, a circle of second waterproof eaves 711 for shielding the inner fire hole 721 extends outwards from the outer periphery of the top wall 71 of the inner fire cover 7, and the second waterproof eaves 711 also has the function of guiding the overflowing liquid to the outer peripheral cavity 314.
As described above, the primary air, the gas, and the mixed primary air and gas are guided in the combustor in such a way that the primary air is sucked into the first gas mixing chamber 70 of the cavity 11 of the base 1 from the outside due to the low pressure caused by the injection of the injector 2 into the injection pipe 31, then the primary air is introduced into the first gas mixing chamber 70 by the kinetic energy of the gas itself, the primary air and the gas are premixed, and finally, the primary air and the gas are further mixed in the first gas mixing chamber 70 and enter the second gas mixing chamber 80 through the transfer passage 9, and finally, the mixed primary air and the gas flow out through the outer fire holes 831 of the outer fire cover 8 and the inner fire holes 721 of the inner fire cover 7 and are ignited together with the secondary air of the external environment, thereby forming the outer fire and the inner fire. The specific primary air inlet path is divided into three paths: the first path is as follows: primary air enters the cavity 11 from a gap between the plate body and the base 1, namely the first inlet 4; and a second path: primary air enters the cavity 11 from a third inlet 13 above the first horizontal separation plate; and a third path: the primary air enters the cavity 11 from the second inlet 12 below the first horizontal partition plate, and the primary air entering the first gap 50 can be more uniformly distributed on the periphery of the ejector 2 due to the first gap 50, so that the gas can be better and directly mixed with the primary air uniformly distributed through the first gap 50 under the action of the ejector 2; the primary air entering through the first path and the second path can also be converged above the first horizontal partition plate 5 to form a certain buffering effect, and then the primary air is supplemented to the upper part of the ejector 2. In addition, the ejector pipe 31 is of a sandwich structure and comprises a central chamber 313 positioned in the center and an outer peripheral chamber 314 surrounding the central chamber 313; the lower end opening of the central chamber 313 is opposite to the ejector 2, and the upper end opening of the central chamber 313 is communicated with the first gas mixing chamber 70; the lower end opening of the peripheral chamber 314 is communicated with the third inlet 13 of the base 1, the upper end of the peripheral chamber 314 is opened as an open end, and the lower end opening of the peripheral chamber 314 is opened as an open end and is communicated with the third inlet 13 of the base 1, therefore, when the overflowing liquid enters the peripheral chamber 314, the overflowing liquid can directly flow out from the third inlet 13, at this time, the third inlet 13 can form an overflow outlet 3142, meanwhile, the peripheral chamber 314 also has the function of preventing the combustion heat generated in the combustion process of the second gas mixing chamber 80 from being conducted to the first gas mixing chamber 70, and further the problem that the temperature of the ejector 2 is increased due to the too close distance with the injection pipe 31 is avoided, meanwhile, the first inlet 4 can also be used as a heat dissipation port of the ejector 2, so that the temperature of the ejector 2 is reduced, and further the injection force of the ejector 2 for injecting the gas is improved.

Claims (18)

1. A burner for a gas range, comprising:
the ejector comprises a base (1) and a base, wherein the base is provided with a cavity (11) with an upward opening, and an ejector (2) is arranged in the center of the cavity (11);
connector (3), including suspension in the plate body on base (1), the periphery of plate body is along covering cavity (11), its characterized in that:
the central position of the plate body is provided with an injection pipe (31) which extends downwards and is vertically arranged, the upper end opening of the injection pipe (31) is an air outlet end, the lower end opening of the injection pipe (31) is an air inlet end (312) and extends into the cavity (11) of the base (1) to be opposite to the ejector (2), and a gap between the plate body and the base (1) forms a first inlet (4) for communicating the cavity (11) with the outside so as to introduce primary air into the cavity (11) of the base (1) from the outside; at least part of the base (1) below the air inlet end (312) of the injection pipe (31) is provided with a through hole communicated with the concave cavity (11), and the through hole forms a second inlet (12) for introducing primary air into the concave cavity (11) of the base (1) from the outside; the injection pipe (31) is of a sandwich structure and comprises a central cavity (313) positioned in the center and a peripheral cavity (314) surrounding the central cavity (313), an annular second horizontal partition plate (10) is arranged between the peripheral cavity (314) and the central cavity (313), and the peripheral cavity (314) and the second horizontal partition plate (10) jointly form an overflow cavity (3140) for storing overflow liquid.
2. Burner for gas cooktops according to claim 1, characterized in that: a partition is further arranged in the cavity (11) of the base (1), and the partition can divide the part, below the air inlet end (312), of the cavity (11) of the base (1) into two relatively independent spaces which are respectively communicated with the first inlet (4) and the second inlet (12).
3. Burner for gas cooktops according to claim 2, characterized in that: the partition is an annular first horizontal partition plate (5), an opening (511) for exposing the ejector (2) is defined by the inner side end (51) of the first horizontal partition plate (5), and the outer side end (52) of the first horizontal partition plate (5) is connected to the base (1).
4. Burner for gas cooktops according to claim 3, characterized in that: the inner side end (51) of the first horizontal partition plate (5) is positioned in the lower end opening of the injection pipe (31).
5. Burner for gas cooktops according to claim 4, characterized in that: and a third inlet (13) communicated with the cavity (11) is formed in the part, above the outer end (52) of the first horizontal partition plate (5), of the base (1).
6. Burner for gas cooktops according to claim 5, characterized in that: a first gap (50) is formed between the lower surface of the first horizontal partition plate (5) and the bottom wall (33) of the base (1), and the first gap (50) is communicated with the second inlet (12).
7. Burner for gas cooktops according to claim 6, characterized in that: the first horizontal partition (5) gradually inclines from the outside to the inside from the outside end (52) to the inside end (51).
8. The burner for a gas range according to any one of claims 5 to 7, wherein: also includes:
the fire cover is arranged on the connecting body (3), and a first air mixing chamber (70) positioned in the center and a second air mixing chamber (80) positioned on the periphery are formed between the fire cover and the connecting body (3); the first gas mixing chamber (70) corresponds to the injection pipe (31) and is used for mixing primary air and fuel gas; and
a transfer passage (9) for transferring the mixed primary air and gas from the first gas mixing chamber (70) to a second gas mixing chamber (80).
9. Burner for gas cooktops according to claim 8, characterized in that:
10. burner for gas cooktops according to claim 9, characterized in that: the lower end edge of the peripheral wall (3141) of the peripheral cavity (314) is higher than the lower end edge of the peripheral wall (3131) of the central cavity (313).
11. Burner for gas cooktops according to claim 10, characterized in that: an outlet (3142) for overflowing liquid is formed in at least part of the outer peripheral wall (3141) of the outer peripheral cavity (314) above the second horizontal partition plate (10).
12. Burner for gas cooktops according to any one of claims 9 to 11, characterized in that: the fire lid is including outer ring fire lid (8), connector (3) still including with outer lane wall (32) that the upper end concentric interval of periphery wall (3141) of periphery cavity (314) set up and diapire (33) of connecting the upper end of periphery wall (3141) and outer lane wall (32), the upper end of periphery wall (3141) of periphery cavity (314), outer lane wall (32), diapire (33) and outer ring fire lid (8) enclose jointly and establish into second gas mixing chamber (80).
13. Burner for gas cooktops according to claim 12, characterized in that: the outer ring fire cover (8) comprises an annular top wall (81), an inner ring wall (82) extending downwards from the inner side edge of the annular top wall (81) in a vertical or inclined mode, and an outer ring wall (83) extending downwards from the outer side edge of the annular top wall (81) in a vertical or inclined mode, the inner ring wall (82) abuts against the upper end of the outer peripheral wall (3141) of the outer peripheral cavity (314), the outer ring wall (83) abuts against the outer ring wall surface (32) of the connecting body (3), and outer fire holes (831) communicated with the second gas mixing chamber (80) are formed in the outer ring wall (83) at intervals in the circumferential direction.
14. Burner for gas cooktops according to claim 13, characterized in that: the outer periphery of the annular top wall (81) of the outer ring fire cover (8) extends outwards to form a circle of first waterproof eaves (811) used for shielding the outer fire holes (831).
15. Burner for gas cooktops according to claim 14, characterized in that: the diapire (33) of outer loop fire lid (8) outwards extend has round protruding circle (311), protruding circle (311) including with relative last chimb (3111), lower flange (3112) of first waterproof eaves (811), and go up chimb (3111) and outer flange (3113) of lower flange (3112), outer chimb (3113) top-down slope gradually, first waterproof eaves (811) are compared outer chimb (3113) are more close to outer lane wall (32) of connector (3).
16. Burner for gas cooktops according to claim 15, characterized in that: an inner step (3114) is arranged between the lower flange (3112) of the convex ring (311) and the bottom wall (33) of the connecting body (3).
17. The burner for a gas range according to any one of claims 13 to 16, wherein: the fire cover further comprises an inner ring fire cover (7), the inner ring fire cover (7) comprises a top wall (71) and an annular peripheral wall (72) extending downwards from the outer periphery of the top wall (71), and the annular peripheral wall (72) is provided with inner fire holes (721) communicated with the first gas mixing chamber (70) at intervals along the circumferential direction.
18. Burner for gas cooktops according to claim 17, characterized in that: the outer periphery of the top wall (71) of the inner ring fire cover (7) extends outwards to form a circle of second waterproof eaves (711) for shielding the inner fire holes (721).
CN201910468438.5A 2019-05-31 2019-05-31 Burner for gas stove Active CN112013388B (en)

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Citations (5)

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CN102141246A (en) * 2011-02-28 2011-08-03 美的集团有限公司 Multi-layer inner flame combustor and gas cooker with same
CN103557525A (en) * 2013-10-21 2014-02-05 宁波方太厨具有限公司 Burner
CN205504986U (en) * 2015-12-26 2016-08-24 聂霖杰 Go up high -power combustor of air inlet
CN109595601A (en) * 2017-09-30 2019-04-09 宁波方太厨具有限公司 A kind of cumulative component and the gas cooker with the cumulative component
CN208804673U (en) * 2018-05-23 2019-04-30 宁波方太厨具有限公司 A kind of cooker burner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10451289B2 (en) * 2017-10-19 2019-10-22 Haier Us Appliance Solutions, Inc. Fuel supply system for a gas burner assembly
CN109000245A (en) * 2018-09-04 2018-12-14 佛山市顺德区美的洗涤电器制造有限公司 Burner and gas cooker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102141246A (en) * 2011-02-28 2011-08-03 美的集团有限公司 Multi-layer inner flame combustor and gas cooker with same
CN103557525A (en) * 2013-10-21 2014-02-05 宁波方太厨具有限公司 Burner
CN205504986U (en) * 2015-12-26 2016-08-24 聂霖杰 Go up high -power combustor of air inlet
CN109595601A (en) * 2017-09-30 2019-04-09 宁波方太厨具有限公司 A kind of cumulative component and the gas cooker with the cumulative component
CN208804673U (en) * 2018-05-23 2019-04-30 宁波方太厨具有限公司 A kind of cooker burner

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