WO2019223402A1 - Brûleur de cuiseur à entrée d'air supérieure - Google Patents

Brûleur de cuiseur à entrée d'air supérieure Download PDF

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Publication number
WO2019223402A1
WO2019223402A1 PCT/CN2019/077984 CN2019077984W WO2019223402A1 WO 2019223402 A1 WO2019223402 A1 WO 2019223402A1 CN 2019077984 W CN2019077984 W CN 2019077984W WO 2019223402 A1 WO2019223402 A1 WO 2019223402A1
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WO
WIPO (PCT)
Prior art keywords
wall
cavity
chamber
inner ring
fire
Prior art date
Application number
PCT/CN2019/077984
Other languages
English (en)
Chinese (zh)
Inventor
卢华师
Original Assignee
宁波方太厨具有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁波方太厨具有限公司 filed Critical 宁波方太厨具有限公司
Priority to AU2019272131A priority Critical patent/AU2019272131B2/en
Priority to US17/057,042 priority patent/US20210207798A1/en
Priority to CA3101040A priority patent/CA3101040C/fr
Publication of WO2019223402A1 publication Critical patent/WO2019223402A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D23/00—Assemblies of two or more burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/06—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air into the fire bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings

Definitions

  • the invention relates to a burner for a gas cooker, in particular to an upward-inlet type cooker burner with a double channel.
  • up-wind gas stoves on the market such as platform-type gas stoves and embedded gas stoves, of which the burner of the embedded gas stove has a single-channel up-air structure, and the gas is entered through one channel.
  • the gas firepower is controlled by a valve and cannot be separated.
  • a Chinese patent CN1212348A (application number CN98120026.5) discloses a gas burner with a simple structure and capable of independently adjusting the central fire and the outer ring fire. That is, this burner is generally equipped with a central injector and an outer ring injector, but this gas burner was found to have insufficient combustion performance in experiments. The speed at which the air is supplied to the central flame head and the external flame head is different. Due to the uneven intake of the central injector and the outer ring injector, the incomplete mixing of the gas and the primary air will also cause the flame length of the central fire and the outer ring fire to be different. Limitation of the height of the device should not be made too long, resulting in large channel resistance, and yellow flames tend to appear when the power is high, especially at low fire gears, the yellow flames are more obvious.
  • a Chinese utility model patent CN2427756Y (patent number ZL00233192.6) provides a solution to solve the above problems, specifically: adding a secondary channel next to the original single main channel to make the secondary channel pass directly to the internal combustion circle, forming two circuits Gas can enter the gas mixing chamber at the same time, and the main passage can be closed when burning, and the auxiliary passage can be used alone. According to the needs of the stove with this structure, the inner and outer fire rings can be opened at the same time, and the outer fire ring can also be closed and used alone.
  • the inner fire ring, and the fire power is controlled by the switch can not only achieve the purpose of cooking dishes, but also save gas and reduce pollution, but it only adds a sub-channel next to the main channel, which corresponds to the outer fire ring gas injector.
  • the channel corresponds to the inner ring fire gas injector, and the auxiliary channel is eccentrically disposed with respect to the main channel, so that the pressure of the gas flowing out of the fire holes arranged in the circumferential direction in the small fire cover corresponding to the auxiliary channel is uneven. The flame of the fire is uneven.
  • a Chinese utility model patent CN204026673U (patent number ZL201420414274.0) mentions an upper inlet burner, which includes a body seat fixed on the bottom shell, wherein the bottom shell is fully closed and the bottom is not Opening, the body seat has three injectors, two outer ring injectors and one inner ring injector.
  • the body seat is fixed to the panel. After the body and the body seat are installed, the center line of the injector corresponds to the outer ring of Venturi and the inner ring. Venturi centerline. Because the high-speed fluid ejected by the ejector is liable to generate negative pressure, the air is drawn into the venturi.
  • the two outer ring ejectors It is located on both sides of the inner ring injector.
  • the outer ring of the outer ring fire cover corresponding to the two outer ring injectors is connected. Once one of the two outer ring injectors is blocked, the gas emitted by the other outer ring injector is blocked. Part of it will be poured back into the gas passage corresponding to the blocked outer ring injector through the outer ring fire cover. If too much gas is accumulated, it will easily cause an explosion.
  • a technical problem to be solved by the present invention is to provide a cooker burner that effectively improves the uniformity of the mixing of primary air and gas in view of the existing state of the art.
  • Another technical problem to be solved by the present invention is to provide a cooker burner that does not easily generate yellow flames and firepower in view of the above-mentioned current state of the art.
  • the base has a concave cavity with an opening facing upward, and a first ejector is disposed at a central position of the cavity;
  • the connecting body is disposed on the base and includes a plate body.
  • the center of the plate body has a vertical first ejection channel, and the outer periphery of the plate body extends in a horizontal direction and can cover the body. Hold the cavity;
  • a fire cover is disposed on the connecting body, and a first mixing chamber located in the center and a second mixing chamber located on the periphery are formed between the connecting cover and the connecting body, and the first mixing chamber corresponds to the first mixing chamber.
  • a transmission channel for transmitting the mixed primary air and gas from the first mixing chamber to the second mixing chamber
  • the first ejection channel is a sandwich structure, and includes a central chamber located at the center and a peripheral chamber surrounding the central chamber; a lower end entrance of the central chamber is in communication with the base cavity and communicates with the base cavity.
  • the first ejector is opposite, and the upper outlet of the central chamber is in communication with the first air-mixing chamber; the lower end of the outer chamber is in communication with the base cavity, and the outer chamber The upper end of the chamber is closed as a blind end.
  • the first ejection channel has a cylindrical structure that is open from top to bottom.
  • the cylinder includes an inner peripheral wall and an outer peripheral wall spaced from the inside to the outside.
  • the inner peripheral wall divides the cylinder into the central chamber.
  • the outer peripheral chamber, and the upper end edge of the inner peripheral wall is connected to the upper end edge of the outer peripheral wall to form a closed end surface.
  • the gas in the central chamber can be more directly mixed with the air in the peripheral chamber to prevent the gas and the primary air from colliding with each other from different directions, thereby further improving the uniform distribution of the primary air.
  • the uniformity of the outer periphery of the central cavity, while improving the primary air intake rate, can also effectively reduce the loss of kinetic energy.
  • a lower end edge of a peripheral wall of the peripheral chamber is lower than a lower end edge of a peripheral wall of the central chamber.
  • the fire cover has a concave groove from the bottom to the top, and the groove for the first ejection channel to extend in, and the groove is surrounded by the plate body.
  • the first air mixing chamber is formed, and a radial venturi cavity is enclosed between the lower surface of the top wall of the groove and the closed end surface of the first ejection channel.
  • the radial venturi chamber can also effectively reduce the height of the burner.
  • a gas mixing chamber that also has a Venturi effect cavity, such as an axial Venturi cavity.
  • the radial venturi cavity can be formed in the following manner.
  • the closed end surface of the first ejection channel includes a first end surface disposed horizontally and a second end surface gradually inclined downward from the inside along the lower edge of the first end surface.
  • the vertical distance D1 of the lower surface of the cavity top wall, the vertical distance D2 of the upper edge of the second end surface and the lower surface of the groove top wall, and the vertical distance D3 of the lower edge of the second end surface and the lower surface of the groove top wall are as follows: Relationship: D1 ⁇ D2 ⁇ D3, thus forming a radial venturi cavity.
  • an included angle ⁇ between the first end surface and the second end surface is 5 ° to 15 °. If the angle is too large, the burner will be too high, and the volume of the burner will increase. It will be difficult to meet the requirements of built-in gas stoves. If the angle is too small, the airflow resistance will be large, and the effect on reducing the airflow resistance and reducing the volume of the cavity is not good. obvious.
  • the fire cover includes an inner ring portion and an outer ring portion that are concentrically spaced, the groove is provided inside the inner ring portion, and the top end of the inner ring portion is higher than the outer ring portion.
  • the inner ring portion includes an annular wall protruding upward and a main cover plate covering the annular wall, and the annular wall is formed with a radial main fire groove and a flame stabilization groove at intervals along the circumferential direction. And cooperate with the outer peripheral wall of the main cover plate to form a main fire hole and a flame stabilization hole respectively.
  • the structure of the second gas mixing chamber may be as follows: the outer ring portion includes inner ring wall surfaces and outer ring wall surfaces that are concentrically spaced, and a bottom wall connecting the inner ring wall surface and the outer ring wall surface, and the inner ring wall surface And the outer ring wall surface is covered with a sub cover plate, and the inner ring wall surface, the outer ring wall surface, the bottom wall, and the sub cover plate are collectively surrounded to form the second mixing chamber.
  • the upper surface of the wall surface of the outer ring is formed with radial first main fire grooves and second main fire grooves at intervals along the circumferential direction, and the groove depth of the first main fire groove is greater than that of the second main fire groove. Grooving depth.
  • the slot depth of the first main fire slot is greater than the slot depth of the second main fire slot, and it can form a supplementary gap of secondary air by itself.
  • each secondary air hole is in communication with the air under the fire cover.
  • the primary air channel can be set up by using any kind of pipe connecting the outside world with the cavity of the base, and the same secondary air path can also be set up by any type of existing technology used to connect the outside world to the secondary air.
  • the secondary air hole is downwardly provided with an annular wall.
  • the annular wall surrounds an annular chamber, and the connecting body is provided with a plurality of radial secondary air passages for connecting the annular chamber and the outside in the circumferential direction.
  • the primary air passage is also provided with a plurality of secondary air passages. And arranged along the connecting body in a radial direction circumferentially, and the secondary air passage is spaced from the primary air passage.
  • the secondary air passage and the primary air passage are spaced apart from each other, and may be spaced in the following manner: at least a pair of baffles provided along a circumferential direction of the plate body downwardly extend from a lower surface of the plate body of the connecting body, In a state where each pair of the baffles is resting on the base, an air inlet of the primary air passage formed by a gap between the pair of the baffles and the base.
  • a notch is formed on an inner ring wall surface of the outer ring portion, and the notch is in communication with a cavity enclosed between the annular peripheral walls of the adjacent annular chambers, and the notch and the cavity together constitute a cavity. Mentioned transmission channel.
  • a ring-shaped wall of the inner ring portion and the main cover plate are formed between the first mixing chamber and the A third gas mixing chamber in which the second gas mixing chamber is phase-fluid-separated, the cavity of the base further contains at least one second ejector, and the base is provided with a space separate from the first ejector At least one second ejection channel of the channel, the second ejection channel being fluidly connected to the base and the second ejector.
  • the fuel mixture of the third mixing chamber is directly supplied from the second injection channel, and is fluidly separated from the first mixing chamber and the second mixing chamber, so that it can be separately supplied.
  • the top wall of the fire cover is provided with at least one through hole in the annular wall of the inner ring portion, and the through hole is convexly provided with a convex wall downward, and the cavity surrounded by the convex wall constitutes the cavity.
  • the fuel mixture in the second injection channel enters the top opening of the third mixing chamber.
  • the second ejection channel and the third gas mixing chamber can be limited to a tubular structure extending along the axial direction of the base and showing convergence-diffusion. The tubular structure is partially formed in the fire cover and part of the base is formed. Block formed.
  • the second ejection channel is an axial venturi tube.
  • At least one partition plate is provided on the top wall of the fire cover, which partitions the third mixing chamber into at least two Independent chambers, each of which is in communication with the corresponding second ejection channel.
  • the formation of the independent chamber can effectively prevent the gas from being reversed due to the blockage of one of the second injectors, thereby causing an explosion.
  • the inner and outer ring fires can be used at the same time, or the inner ring fires can be used alone, especially in the flames in the inner, central and outer circumferential directions.
  • the flames have basically no turbulence and interference.
  • it also has the function of cooking with low fire.
  • a partition plate is also provided between the annular wall protruding upward from the inner ring portion and the main cover plate. At least one of the top surfaces of the partition plate is provided for passing through the first portion.
  • a circle of convex rings is protruded upward at the center position of the upper surface of the inner ring portion, and the partition plate has a mounting hole that can rest on the convex ring at the corresponding position.
  • the outer edge of the partition plate abuts the annular wall, and the upper surface of the partition plate is provided with at least two convex ribs for supporting the main cover plate at intervals in the circumferential direction.
  • An annular convex wall that can pass through the mounting hole and is adapted to the convex ring extends from the position of the convex ring.
  • FIG. 1 is a schematic structural diagram of an embodiment of the present invention
  • FIG. 2 is a schematic exploded structure diagram of FIG. 1;
  • FIG. 2 is a schematic exploded structure diagram of FIG. 1;
  • Figure 3 is a sectional view at an angle of Figure 1;
  • FIG. 4 is an enlarged schematic view at A in FIG. 3; FIG.
  • FIG. 5 is a schematic structural diagram of a first ejection channel and a second ejection channel in an embodiment of the present invention
  • FIG. 6 is a cross-sectional view from another angle of FIG. 1;
  • FIG. 7 is a schematic structural view of an angle of a fire cover in an embodiment of the present invention.
  • FIG. 8 is a schematic structural view of the fire cover at another angle in the embodiment of the present invention.
  • the cooker burner can be applied to both a traditional up-wind burner and an Italian Sabaf burner such as Europe.
  • the cooker burner includes a base 1, a connecting body 2 provided on the base 1, a primary air passage 4, a fire cover 5 and a transmission passage 6 provided on the connecting body 2.
  • the base 1 has a concave cavity 11 with an opening facing upward, and a first ejector 12 is provided at a central position of the concave cavity 11;
  • the connecting body 2 includes a plate body 21 having a vertical first ejection channel 3 at a central position of the plate body 21, and an outer periphery of the plate body 21 extends along the horizontal direction 211 and can cover the cavity 11;
  • the primary air passages 4 are arranged circumferentially and spaced along the connecting body 2.
  • the primary air passages 4 are used to communicate the cavity 11 with the outside to introduce the primary air from the outside into the cavity 11 of the base 1;
  • a first mixing chamber 514 in the center and a second mixing chamber 525 in the periphery are formed between the fire cover 5 and the connecting body 2.
  • the first mixing chamber 514 corresponds to the first ejection channel 3 and is used for Mix air and gas once.
  • the transmission channel 6 is used for transmitting the mixed primary air and gas from the first mixing chamber 514 to the second mixing chamber 525.
  • the first ejection channel 3 is a sandwich structure, which includes a central chamber 311 located at the center and an outer peripheral chamber 312 surrounding the central chamber 311.
  • the lower end entrance of the central chamber 311 and the base The recessed cavity 11 communicates with the first ejector 12, and the upper exit of the center chamber 311 communicates with the first gas mixing chamber 514.
  • the lower end of the peripheral cavity 312 communicates with the recessed cavity 11 in the base, and the peripheral cavity
  • the upper end of the chamber 312 is closed as a blind end.
  • the first ejection channel 3 has a cylindrical structure that is open from top to bottom.
  • the cylinder includes an inner peripheral wall 31 and an outer peripheral wall 32 spaced from the inside to the outside.
  • the inner peripheral wall 31 divides the cylinder into a centrally located one.
  • the central chamber 311 and the outer peripheral chamber 312 surrounding the central chamber 311, and the upper end edge of the inner peripheral wall 31 and the upper end edge of the outer peripheral wall 32 are connected to form a closed end surface 33.
  • the center can be better
  • the gas in the chamber 311 is directly mixed with the outer chamber 312 once to prevent the gas and the primary air from colliding with each other from different directions, thereby further improving the uniformity of the primary air evenly distributed on the outer periphery of the central chamber 311, At the same time of primary air intake rate, it can also effectively reduce kinetic energy loss.
  • the lower end edge of the outer peripheral wall 32 of the outer peripheral chamber 312 is lower than the lower end edge of the peripheral wall of the central chamber 311.
  • This design enables a pre-mixing of air and gas first downstream of the central cavity, and then with the help of the low pressure caused by the Venturi effect obtained in the first mixing chamber 514 itself, the pre-mixed air and gas are sucked in The second mixing is performed after the first mixing chamber 514, which effectively improves the uniformity of the air and gas mixing once.
  • the arrangement of the first air-mixing chamber 514 is preferably formed inside the fire cover 5 and has a recess 511 recessed from the bottom to the top and extending into the first ejection channel 3, and the recess 511 and the connecting body
  • the plate body 21 of 2 constitutes the first gas mixing chamber 514, and a radial venturi cavity 60 is enclosed between the lower surface of the top wall of the groove 511 and the closed end surface 33 of the first ejection channel 3.
  • the radial venturi cavity 60 is formed in the following manner.
  • the closed end surface 33 of the first ejection channel 3 includes a first end surface 331 horizontally disposed and a second end surface gradually inclined downward from the inside along the lower edge of the first end surface 331.
  • the included angle ⁇ between the first end surface 331 and the second end surface 332 of the closed end surface 33 is 5 ° to 15 °, and in this embodiment, it is preferably 10 °.
  • the angle setting can reduce the resistance loss when the gas and primary air mixture is injected into the second mixing chamber 525, and the ejection is smoother and smoother.
  • the included angle ⁇ is not as long as it can effectively reduce the local resistance loss. It is easy to cause the volume of the ejection tube to be too large.
  • the configuration of the second gas mixing chamber 525 may be as follows: the fire cover 5 includes an inner ring portion 51 and an outer ring portion 52 disposed at a concentric interval, and the groove 511 is provided inside the inner ring portion 51, and the inner ring The top end of the portion 51 is higher than the top end of the outer ring portion 52.
  • the inner ring portion 51 includes an annular wall 512 protruding upward and a main cover plate 513 covering the annular wall 512.
  • the annular wall 512 is formed at intervals in the circumferential direction.
  • the main fire slot 5121 and the flame holding groove 5122 in the radial direction cooperate with the outer peripheral wall 32 of the main cover plate 513 to form a main fire hole and a flame holding hole, respectively.
  • the outer ring portion 52 includes inner ring wall surfaces 521 and outer ring wall surfaces 522 arranged concentrically at a distance, and a bottom wall 523 connecting the inner ring wall surfaces 521 and the outer ring wall surfaces 522.
  • the inner ring wall surfaces 521 and the outer ring wall surfaces 522 are covered with a sub cover plate. 524, the inner ring wall surface 521, the outer ring wall surface 522, the bottom wall 523, and the sub cover plate 524 are collectively surrounded to form a second gas mixing chamber 525.
  • the upper surface of the outer ring wall surface 522 is spaced along the circumferential direction with radial first main fire grooves 5221 and second main fire grooves 5222.
  • the depth of the first main fire groove 5221 is greater than that of the second main fire grooves.
  • the slot depth of 5222 can form a supplementary gap for secondary air.
  • each secondary air hole 7 is in communication with the secondary air passage 40 below the fire cover 5, the secondary air hole 7 also has a clever role to form the transmission passage 6
  • Part of the secondary air hole 7 is convexly provided with an annular peripheral wall 71 protruding downward, the annular peripheral wall 71 surrounds an annular cavity, and the base 1 is provided with a plurality of radial directions for communicating with the annular cavity in the circumferential direction.
  • a gap 5211 is formed on the inner ring wall surface 521 of the outer ring portion 52 and the secondary air passage 40 of the outside, and the gap 5211 communicates with the cavity enclosed between the annular peripheral walls 72 of the adjacent annular chamber.
  • the notch 5211 and The cavities together constitute a transmission channel 6.
  • a plurality of primary air passages 4 are also provided, and are arranged radially along the circumference of the base 1.
  • the secondary air passages 40 and the primary air passages 4 extend downwardly through the lower surface of the plate body 21 of the connection body 2.
  • At least one pair of baffles 212 arranged circumferentially and radially along the plate body 21 are spaced apart, and in a state where each pair of baffles 212 is resting on the base 1, a gap between each pair of baffles 212 and the base 1
  • the air inlet of the primary air passage 4 is formed. The significance of this separation is to effectively separate the primary air and secondary air passages 40 to avoid mutual influence.
  • the first mixing chamber is formed between the annular wall 512 of the inner ring portion 51 and the main cover plate 513.
  • the third mixing chamber 8 fluidly separated from the second mixing chamber 514 and the second mixing chamber 525.
  • At least one second ejector 9 is also contained in the cavity 11 of the base 1, and the base 1 is provided with a space separate from the first At least one second ejection channel 10 of the ejection channel 3 is in fluid connection with the base 1 and the second ejector 9.
  • the fuel mixture of the third mixing chamber 8 is directly supplied from the second injection channel 10 and is fluidly separated from the first mixing chamber 514 and the second mixing chamber 525, so that it can be separately supplied.
  • two second ejection channels 10 are provided, which are symmetrically arranged on both sides of the first ejection channel 3 in the circumferential direction, respectively, and at the same time, the purpose of making the central fire and the peripheral fire uniform is achieved.
  • the top wall of the fire cover 5 is also provided with two corresponding through holes 50 inside the annular wall 512 of the inner ring portion 51.
  • the through hole 50 is downwardly provided with a convex wall 501, and a cavity surrounded by the convex wall 501 constitutes
  • the fuel mixture in the second injection channel 10 enters the top opening of the third mixing chamber 8.
  • the present invention may jointly define the second ejection channel 10 and the third gas mixing chamber 8 in a tubular structure such as an axial venturi that extends along the axial direction of the base 1 and converges and diffuses.
  • a tubular structure such as an axial venturi that extends along the axial direction of the base 1 and converges and diffuses.
  • the opening formed in the fire cover 5 corresponds to the cavity surrounded by the convex wall 501 of the through hole 50, and the portion is formed in the connecting body 2 corresponding to the second ejection channel 10.
  • a top wall of the fire cover 5 is provided with a radial penetration 510 Divides the partition plate 20, which divides the third mixing chamber 8 into two independent chambers such as a first independent chamber 201 and a second independent chamber 201 ', and the first independent chamber 201 and the second independent chamber
  • the chambers 201 ′ are in communication with the corresponding second ejection channels 10.
  • a partition 30 is also provided between the annular wall 512 and the main cover plate 513 protruding upward from the inner ring portion 51.
  • a plurality of fuel mixtures for mixing by the third mixing chamber 8 are opened on the top surface of the partition 30.
  • the outflow air outlet 301 has a first gap 302 between the lower surface of the partition plate 30 and the upper surface of the inner ring portion 51, and a second gap 303 between the upper surface of the partition plate 30 and the main cover plate 513.
  • the second gap 303 constitutes the inner ring portion The fire exit of 51. Since the partition plate 30 has the effect of further reducing the gas velocity, the central flame of the inner ring and the small fire formed by the fire outlet are more uniform, so that the bottom of the pot is heated more uniformly.
  • the inner ring portion 51 and the outer ring portion 52 of the fire cover 5 can be burned at the same time, but also the inner ring portion 51 can be selected to burn alone and the inner ring portion can be selected.
  • the two ring fires of 51 burn at the same time, and different firepower can satisfy different cooking and different foods, and choose between different stages of cooking food, which is convenient to use.
  • a ring 510 protrudes upward from the center of the upper surface of the inner ring portion 51.
  • the partition 30 has a mounting hole 304 that can rest on the ring 510 at the corresponding position, and the outside of the partition 30 The edge abuts the annular wall 512.
  • the upper surface of the partition plate 30 is provided with at least two convex ribs 305 for supporting the main cover plate 513 along the circumferential direction.
  • the main cover plate 513 extends downward at a position corresponding to the convex ring 510.
  • the path of the primary air, gas, and mixed primary air and gas inside the burner is as follows, since the first injector 12 to the first ejection channel 3 and the radial direction
  • the low pressure caused by the gas injection in the first mixing chamber 514 of the Venturi effect draws the primary air from the outside into the peripheral chamber 312 of the recess 11 of the base 1 through the primary air passage 4 (for simplicity, only shown A first ejection channel 3 and a transmission channel 6), and then the primary air is fed into the central chamber 311 by the kinetic energy of the gas itself, and the air and the gas are premixed, and finally the radial direction of the first mixing chamber 514 is radial
  • the venturi effect cavity is further mixed and enters the second mixing chamber 525 through the transmission channel 6.
  • the fire cover 5 also includes a central fire that enables the user to control it individually.
  • the primary air and gas required for the central fire are input to the third mixing chamber 8 by the second injection channel 10 independently of the first injection channel 3.
  • the third mixing chamber 8 is separated from the first mixing chamber 514 and the second mixing chamber 525. In this way, the fluid separation of the second mixing chamber 525 and the third mixing chamber 8 is achieved, and then they can be separated separately. It is supplied to the ground to allow the user to control the inflow of the fuel mixture into the first injection channel 3 and the second injection channel 10 separately.
  • adjust the Just adjust the valve adjust the Just adjust the valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

La présente invention concerne un brûleur de cuiseur comprenant une base (1), un premier canal d'éjection (3), un canal d'air primaire (4), un capuchon de brûleur (5) et un canal de transmission (6). La base (1) est pourvue d'une cavité (11) elle-même dotée d'une ouverture orientée vers le haut et utilisée pour accueillir au moins un premier éjecteur (12). Le premier canal d'éjection (3) comprend une chambre centrale (311) située en son centre et une chambre périphérique (312) entourant la chambre centrale (311). Une entrée de la chambre centrale (311) est opposée au premier éjecteur (12). La chambre périphérique (312) est utilisée pour uniformiser l'air primaire autour de la périphérie de la chambre centrale (311). Une conception de structure inter-couche du premier canal d'éjection (3) peut améliorer le mélange direct du gaz dans la chambre centrale (311) avec l'air primaire dans la chambre périphérique (312), ce qui permet d'améliorer l'uniformité et le taux d'admission de l'air primaire uniformément réparti à la périphérie de la chambre centrale (311) et également d'éviter une flamme jaune ou une flamme faible.
PCT/CN2019/077984 2018-05-23 2019-03-13 Brûleur de cuiseur à entrée d'air supérieure WO2019223402A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2019272131A AU2019272131B2 (en) 2018-05-23 2019-03-13 Cooker burner
US17/057,042 US20210207798A1 (en) 2018-05-23 2019-03-13 Cooker Burner
CA3101040A CA3101040C (fr) 2018-05-23 2019-03-13 Bruleur de cuiseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810503164.4 2018-05-23
CN201810503164.4A CN110529850B (zh) 2018-05-23 2018-05-23 一种上进风燃烧器

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WO2019223402A1 true WO2019223402A1 (fr) 2019-11-28

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PCT/CN2019/077984 WO2019223402A1 (fr) 2018-05-23 2019-03-13 Brûleur de cuiseur à entrée d'air supérieure

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Country Link
US (1) US20210207798A1 (fr)
CN (1) CN110529850B (fr)
AU (1) AU2019272131B2 (fr)
CA (1) CA3101040C (fr)
WO (1) WO2019223402A1 (fr)

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CN111878809B (zh) * 2020-07-06 2022-04-15 武汉理工大学 一种基于tvc驻涡结构的家用燃气灶

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CN2480700Y (zh) * 2000-12-30 2002-03-06 中山市长青气具阀门有限公司 立式引射燃烧器
CN2479366Y (zh) * 2001-04-20 2002-02-27 广东美的集团股份有限公司 一种上进风多喷嘴燃烧器
CN200968608Y (zh) * 2006-06-22 2007-10-31 夏爱明 完全上进风燃烧器
CN201344535Y (zh) * 2008-12-23 2009-11-11 刘一飞 一种多喷嘴、大流量、完全上进风的嵌入式家用燃气灶用燃烧器
EP2226560A2 (fr) * 2009-03-06 2010-09-08 Turas Gaz Armatürleri Sanayi. Ve Ticaret A.S. Bruleur de cuisinière comportant plusieurs couronnes de flammes
CN201547778U (zh) * 2009-10-09 2010-08-11 广东合胜金属制造有限公司 全面进风式灶具燃烧器
CN202494111U (zh) * 2012-02-16 2012-10-17 梁锦洪 燃气灶用的燃烧器
EP3004737B1 (fr) * 2013-05-29 2016-09-21 Defendi Italy S.r.l. Brûleur à gaz perfectionné
CN208804673U (zh) * 2018-05-23 2019-04-30 宁波方太厨具有限公司 一种灶具燃烧器

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CN110529850B (zh) 2024-07-23
AU2019272131B2 (en) 2022-05-12
CN110529850A (zh) 2019-12-03
US20210207798A1 (en) 2021-07-08
CA3101040A1 (fr) 2019-11-28
CA3101040C (fr) 2023-04-04
AU2019272131A1 (en) 2021-01-28

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