WO2020047933A1 - 燃烧器及燃气灶具 - Google Patents

燃烧器及燃气灶具 Download PDF

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Publication number
WO2020047933A1
WO2020047933A1 PCT/CN2018/109341 CN2018109341W WO2020047933A1 WO 2020047933 A1 WO2020047933 A1 WO 2020047933A1 CN 2018109341 W CN2018109341 W CN 2018109341W WO 2020047933 A1 WO2020047933 A1 WO 2020047933A1
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WO
WIPO (PCT)
Prior art keywords
cavity
primary air
channel
bottom cup
mounting
Prior art date
Application number
PCT/CN2018/109341
Other languages
English (en)
French (fr)
Inventor
林梦
孙明雪
Original Assignee
佛山市顺德区美的洗涤电器制造有限公司
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
Priority claimed from CN201821444477.9U external-priority patent/CN209042353U/zh
Priority claimed from CN201811027492.8A external-priority patent/CN109000245B/zh
Application filed by 佛山市顺德区美的洗涤电器制造有限公司 filed Critical 佛山市顺德区美的洗涤电器制造有限公司
Publication of WO2020047933A1 publication Critical patent/WO2020047933A1/zh

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Classifications

    • 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
    • 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
    • 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

Definitions

  • the present application relates to the technical field of cooking appliances, and in particular, to a burner and a gas cooker.
  • the burners of gas cookers are more commonly a down-intake burner or an up-intake burner.
  • the primary air from the down-air burner is introduced from the bottom case below the panel, and the cabinet door switch seriously affects the stability of the fire protection flame.
  • the primary air of the inlet air burner is introduced from above the panel. Due to the limitation of the structure of the burner, the venturi tube is short in design, and air and gas are easily mixed unevenly, which makes it difficult to ensure the thermal load of the burner.
  • the application provides a burner and a gas cooker.
  • the burner according to the embodiment of the present application includes a bottom cup, a flame sprayer and a nozzle holder.
  • the flame sprayer is disposed on the bottom cup, the bottom cup is provided with an air cavity, and the nozzle holder is installed on the primary cup.
  • a side wall of the air cavity, a first primary air inlet is opened on the top of the primary air cavity, and a cavity through hole as a second primary air inlet is opened on the side wall of the primary air cavity;
  • the flamethrower includes an outer ring cavity and an inner ring cavity, the outer ring cavity surrounds the inner ring cavity, the bottom cup is provided with a first ejection channel, and the outer ring cavity is provided with an outer A gas mixing cavity, the mixed gas of the outer gas mixing cavity is supplied by the first ejection channel, the inner ring cavity is provided with an inner gas mixing cavity, and the inner ring cavity is connected with a second ejection channel, The mixed gas in the internal gas mixing chamber is supplied from the second ejection channel;
  • a gap is formed between the outer ring cavity and the bottom cup, the gap communicates with the air inlet of the second ejection channel, and a gap is formed between the outer ring cavity and the primary air cavity.
  • a primary air channel that communicates with the first primary air inlet.
  • the air can enter the second injection channel from the gap and mix with the gas, so that the inner ring cavity can adopt the inlet air intake method; the air can enter the primary air cavity from the first primary air inlet, or It enters the primary air cavity from the second primary air inlet, so that the outer ring cavity can adopt the air intake method of up and down air intake.
  • the up-and-down air inlet design of the outer ring cavity and the up-air inlet design of the inner ring cavity can be realized, thereby ensuring the thermal load of the burner, especially the outer ring cavity.
  • a mounting channel is provided at the bottom of the bottom cup
  • the nozzle holder includes a first intake pipe and a second intake pipe
  • the first intake pipe is provided with a first intake channel
  • the first Two intake ducts are provided with a second intake channel
  • a first nozzle is installed at an air outlet of the first intake channel
  • the first nozzle is opposite to the first ejection channel
  • the second intake channel is A second nozzle is installed at the air outlet
  • the second ejection channel is opposite to the second nozzle
  • the second intake pipe is at least partially located in the installation channel.
  • the primary air cavity is protruded from a side of the bottom cup, the primary air cavity is provided with a primary air cavity, and the first nozzle is located in the primary air cavity.
  • the first ejection channel communicates with the primary air cavity, and the mounting channel penetrates a side surface and a bottom surface of the primary air cavity.
  • the nozzle holder includes an air inlet portion and a baffle protruding on the air inlet portion, and the height of the baffle is adjustable to allow the baffle to open the cavity. At least a part of the through hole.
  • the nozzle holder includes a first positioning structure, and a side wall of the primary air cavity is provided with a second positioning structure protruding outward, and the first positioning structure is connected to the second positioning structure.
  • the position of the nozzle seat on the bottom cup is jointly defined from different at least two directions.
  • the nozzle holder includes a connection portion and a mounting plate, the connection portion connects the first intake pipe and the second intake pipe, and a first positioning surface is formed on a side surface of the connection portion, A second positioning surface is formed on the bottom surface of the mounting plate, the first positioning surface and the second positioning surface constitute the first positioning structure, and the second positioning structure includes a first support plate and a second support plate A side surface of the first support plate is engaged with the first positioning surface, and a top surface of the second support plate is engaged with the second positioning surface.
  • the number of the mounting plates is two, the two mounting plates are respectively disposed on opposite sides of the first intake pipe, and the number of the second supporting plates is two.
  • the first support plate is connected to the two second support plates.
  • the at least two directions include two directions that are perpendicular to each other.
  • the nozzle holder includes a connecting portion that connects the first intake pipe and the second intake pipe, the connecting portion is provided with a connecting channel, and the connecting channel communicates with at least The first intake passage is described.
  • the central axis of the first intake pipe and the central axis of the second intake pipe are staggered in the thickness direction of the burner.
  • the bottom cup is provided with a single said first ejection channel.
  • the nozzle holder is detachably mounted on the bottom cup.
  • the flamethrower has a first center
  • the bottom cup has a second center
  • the first center is eccentric to the second center
  • the primary air cavity has a third center, and the third center is eccentrically disposed from the second center.
  • the bottom cup includes a bottom cup lid body and a bottom cup base body, and the bottom cup lid body is mounted on the bottom cup base body.
  • the bottom cup lid body includes a top wall and a first mounting wall, and the first mounting wall is convexly disposed on the top wall;
  • the bottom cup base body includes a bottom wall and a second mounting wall
  • the second mounting wall is convexly disposed on the bottom wall, the top wall is opposite to the bottom wall, the bottom wall and the second mounting wall jointly form a mounting groove, and the first mounting wall is at least It is partially embedded in the mounting groove and at least partially overlaps with the second mounting wall.
  • the top wall is provided with an outer ring air outlet and an inner ring air outlet, and the outer ring air outlet communicates with the first ejection channel and the outer gas mixing cavity, and the inner ring outlet An air port communicates with the second injection channel and the inner gas mixing cavity.
  • the primary air cavity includes a ring member and a cavity body, the ring member protruding from the side of the bottom cup lid body, the ring member has an opening, and the opening forms an opening
  • a first supporting structure is formed on a side edge of the ring member connected to the bottom cup lid body, and a second supporting structure is protruded from the bottom of the outer ring cavity.
  • the first support structure is cooperatively connected with the second support structure.
  • a gas cooker according to an embodiment of the present application includes the burner according to any one of the foregoing embodiments.
  • air can enter the second injection channel from the gap and mix with the gas, so that the inner ring cavity can adopt the inlet air intake method; the air can enter the primary air cavity from the first air inlet, or It enters the primary air cavity from the second primary air inlet, so that the outer ring cavity can adopt the air intake method of up and down air intake.
  • the up-and-down air inlet design of the outer ring cavity and the up-air inlet design of the inner ring cavity can be realized, thereby ensuring the thermal load of the burner, especially the outer ring cavity.
  • FIG. 1 is a schematic perspective view of a burner according to an embodiment of the present application.
  • FIG. 2 is another schematic perspective view of a burner according to an embodiment of the present application.
  • FIG. 3 is an exploded perspective view of a burner according to an embodiment of the present application.
  • FIG. 4 is a schematic perspective view of a bottom cup of a burner according to an embodiment of the present application.
  • FIG. 5 is an exploded perspective view of the bottom cup of the burner according to the embodiment of the present application.
  • FIG. 6 is a plan view of a burner according to an embodiment of the present application.
  • FIG. 7 is a schematic cross-sectional view of the burner of FIG. 6 along a section line B;
  • FIG. 8 is a side view of a burner according to an embodiment of the present application.
  • FIG. 9 is a schematic perspective view of a lid of a bottom cup of a burner according to an embodiment of the present application.
  • FIG 10 is another schematic perspective view of the bottom cup upper cover of the burner according to the embodiment of the present application.
  • FIG. 11 is a schematic perspective view of a bottom cup base of a burner according to an embodiment of the present application.
  • FIG 12 is another schematic perspective view of the bottom cup base of the burner according to the embodiment of the present application.
  • FIG. 13 is a schematic perspective view of a nozzle holder of a burner according to an embodiment of the present application.
  • FIG. 14 is another schematic perspective view of a nozzle holder of a burner according to an embodiment of the present application.
  • FIG. 15 is a schematic cross-sectional view of the burner of FIG. 6 along the section line A;
  • 16 is a schematic perspective view of a bottom cup base and a nozzle base of a burner according to an embodiment of the present application;
  • FIG. 17 is another perspective view of the bottom cup holder and the nozzle holder of the burner according to the embodiment of the present application;
  • FIG. 18 is a schematic perspective view of a burner of a burner according to an embodiment of the present application.
  • FIG. 19 is an enlarged schematic view of the flamethrower I portion of the burner of FIG. 18; FIG.
  • FIG. 20 is another schematic perspective view of a flame burner of the burner according to the embodiment of the present application.
  • Nozzle holder 20 air intake portion 21, first intake pipe 211, first intake passage 2111, second intake pipe 212, second intake passage 2121, horizontal pipe 2122, vertical pipe 2123, first connection portion 213, A first positioning surface 2132, a baffle plate 22, a second positioning structure 23, a mounting plate 24, a second positioning surface 241, a third mounting hole 242, a first nozzle 25, and a second nozzle 26;
  • Fire cover 40 outer ring fire cover 41, inner ring fire cover 42.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically defined otherwise.
  • the "first" or “down” of the first feature may include direct contact between the first and second features, or may include the first and second features.
  • the two features are not in direct contact but are contacted through another feature between them.
  • the first feature is "above”, “above”, and “above” the second feature, including that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is higher in level than the second feature.
  • the first feature is “below”, “below”, and “below” of the second feature, including the fact that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is less horizontal than the second feature.
  • a burner 100 according to an embodiment of the present application includes a bottom cup 10, a nozzle holder 20, a flame burner 30, and a fire cover 40.
  • the flamethrower 30 is disposed on the bottom cup 10.
  • the bottom cup 10 is provided with a primary air cavity 13, and the nozzle holder 20 is installed on the side of the primary air cavity 13.
  • the burner 100 according to the embodiment of the present application can be applied to a gas cooker according to the embodiment of the present application.
  • the bottom cup 10 includes a bottom cup lid body 11 and a bottom cup base body 12.
  • the bottom cup lid body 11 is mounted on the bottom cup base body 12.
  • the bottom cup lid body 11 and the bottom cup base body 12 are riveted.
  • the primary air cavity 13 is protruded from the side of the bottom cup 10.
  • a first primary air inlet is provided on the top of the primary air cavity 13.
  • the bottom cup 10 is provided with a first ejection channel 101 having a Venturi effect.
  • a connection channel 102 is defined in the bottom cup 10.
  • the connection channel 102 has a guiding effect on a mixed gas of air and gas.
  • the connection channel 102 is an arc-shaped bottom surface, and the connection channel 102 is connected to the arc surface of the air outlet end of the first ejection channel 101 so that the resistance of the airflow flowing in the connection channel 102 can be reduced.
  • the connection channel 102 may be gradually changed along the airflow direction.
  • the connection channel 102 and the first ejection channel 101 may together constitute a mixed gas channel of gas and air of the bottom cup 10.
  • a first mounting hole (not shown in the figure) penetrating the bottom cup 10 may be opened along the thickness direction of the bottom cup 10 (the up-down direction as shown in FIG. 7).
  • the first mounting hole can be used for mounting a thermocouple (not shown) and an ignition pin (not shown).
  • a single first ejection channel 101 and a single connection channel 102 are provided in the bottom cup 10.
  • the unilateral air separation of the first ejection channel 101 can minimize the resistance of the air flow.
  • the first ejection channels 101 are arranged substantially horizontally.
  • the bottom cup 13 has a first center x (corresponding to the second center in the claims, and a dotted line m1 in FIG. 8 is a central axis where the first center x is located).
  • the primary air cavity 13 has a second center y (corresponding to the third center in the claims, and the dotted line m2 in FIG. 8 is the central axis where the second center y is located).
  • the first center x and the second center y are arranged off-center.
  • the planar shapes of the bottom cup lid body 11 and the bottom cup base body 12 are regular shapes, and the planar shape of the primary air cavity 13 is regular shape.
  • the planar shapes of the bottom cup base 12 and the bottom cup lid 11 are circular
  • the first center x is the center of the circle where the plane of the bottom cup 10 is located
  • the planar shape of the primary air cavity 13 is arc-shaped.
  • the second center y is the center of the circle where the plane of the primary air cavity 13 is located.
  • the planar shape of the bottom cup 10 is square
  • the first center x is the intersection of the diagonals of the square where the plane of the bottom cup 10 is located
  • the planar shape of the primary air cavity 13 is arc-shaped.
  • the second center y is the center of the circle where the plane of the primary air cavity 13 is located.
  • the primary air cavity 13 can be increased to ensure the intake of primary air.
  • it is also conducive to increasing the first injection channel 101 so that the gas and air can be fully mixed in the first injection channel 101 , Which is beneficial to improve the combustion efficiency of the burner 100.
  • the bottom cup lid body 11, the bottom cup base body 12, and the primary air cavity 13 may also have other shapes.
  • the bottom cup lid body 11 includes a top wall 111, a first mounting wall 112 and a first channel portion 113.
  • the bottom cup lid body 11 is formed with a first joint surface 110.
  • the bottom cup lid body 11 is provided with a lid body connecting groove 114.
  • the cover connection groove 114 is located between the first passage portion 113 and the first mounting wall 112.
  • the top wall 111 is provided with an outer ring air outlet 115 and an inner ring air outlet 116.
  • the first ejection channel 101 communicates with the outer ring air outlet 115 through the connection channel 102. In this way, the mixed gas of gas and air ejected from the first ejection channel 101 can be supplied to the flamethrower 30 for combustion by the outer ring air outlet 115.
  • connection channel 102 connects the air outlet end of the first ejection channel 101 and the outer ring air outlet 115.
  • the outer ring air outlet 115 is provided in an arc shape, such as a circular arc shape.
  • a first support structure 117 is formed on an edge of the outer ring air outlet 115 protruding from the surface of the top wall 111.
  • Positioning grooves 119 are formed on both sides of the inner ring air outlet 116.
  • a second supporting structure 118 is formed on the upper surface of the top wall 111.
  • the first mounting wall 112 is protruded from the top wall 111.
  • the first channel portion 113 is protruded from the top wall 111.
  • the first mounting wall 112 surrounds the first passage portion 113.
  • the first channel portion 113 is provided with a first groove 1131.
  • the first channel portion 113 is formed with first channel engaging surfaces 1101 on both sides of the first groove 1131.
  • the first channel portion 113 is formed with a first connection joint surface 1102.
  • the first channel joint surface 1101, the first connection joint surface 1102, and the end faces of the first mounting wall 112 are coplanar.
  • the first joint surface 110 includes a first channel joint surface 1101, a first connection joint surface 1102, and an end surface of the first mounting wall 112.
  • the bottom cup base 12 includes a bottom wall 121, a second mounting wall 122, and a second channel portion 123.
  • the second mounting wall 122 is protruded from the bottom wall 121.
  • the top wall 111 and the bottom wall 121 are opposed.
  • the bottom wall 121 faces the first joint surface 110.
  • the bottom wall 121 and the second mounting wall 122 together form a first mounting groove 124 (corresponding to the mounting groove in the claims).
  • the first mounting wall 112 is at least partially embedded in the first mounting groove 124 and at least partially overlaps with the second mounting wall 122. That is, the bottom cup lid body 11 is mounted on the bottom cup seat body 12 and is partially located in the first mounting groove 124. .
  • the first mounting wall 112 and the second mounting wall 122 are overlapped and joined along the inside of the combustor 100 in an outward direction (such as a horizontal direction in FIG. 7). In this way, when the burner 100 works, the first mounting wall 112 and the second mounting wall 122 are more tightly connected due to the temperature rise of the bottom cup 10, thereby ensuring that the bottom cup 10 has better sealing performance, so that the bottom cup The lid 11 is mounted on the bottom cup base 12 and has a better sealing performance, and the bottom cup 10 is not easy to leak air. In this way, the amount of air and gas mixture gas of the flame burner 30 will not be insufficient and the normal operation of the burner 100 will be affected (the main hazard of gas leakage is a potential safety hazard).
  • the bottom cup 10 may be made of cast aluminum.
  • the first mounting wall 112 is closer to the first center x of the bottom cup 10 than the second mounting wall 122.
  • the bottom wall 121 is provided with a bottom wall connecting groove 125.
  • the cover connecting groove 114 and the bottom wall connecting groove 125 together form a connecting channel 102.
  • a second joint surface 120 is formed on the top surface of the bottom wall 121.
  • the second mounting wall 122 surrounds the second joint surface 120.
  • the first joint surface 110 and the second joint surface 120 are joined. At least one of the first joint surface 110 and the second joint surface 120 is processed by a finishing process. In this way, the sealing effect is better.
  • the second bonding surface 120 includes a second connection bonding surface 1201, a second channel bonding surface 1202, and a third connection bonding surface 1203.
  • An end surface of the first mounting wall 112 is joined to the second connection joint surface 1201.
  • a mounting channel 126 and a mounting through hole 127 are defined in the bottom of the bottom cup 10.
  • the mounting channel 126 is connected to the mounting through hole 127.
  • the mounting channel 126 penetrates the side surface and the bottom surface of the primary air cavity 13.
  • the end surface of the first mounting wall 112 is in contact with the top surface of the bottom wall 121.
  • the contact between the end surface of the first mounting wall 112 and the top surface of the bottom wall 121 may also be processed by a precision turning process. That is, the end surface of the first mounting wall 112 may be processed by a precision turning process, or a part of the top surface of the bottom wall 121 connected to the first mounting wall 112 may be processed by a precision turning process, or Both the end surface and the top surface of the bottom wall 121 that is in contact with the first mounting wall 112 (ie, the second connection joint surface 1201) are processed by a precision turning process.
  • the second channel portion 123 is located at the bottom of the first mounting groove 124.
  • the first channel portion 113 and the second channel portion 123 are connected.
  • the second mounting wall 122 surrounds the second passage portion 123.
  • the second channel portion 123 defines a second groove 1231.
  • the first groove 1131 and the second groove 1231 together form a first ejection channel 101. This facilitates processing and molding of the first injection channel 101.
  • the second channel portion 123 is formed with second channel engaging surfaces 1202 on both sides of the second groove 1231.
  • the first channel joint surface 1101 and the second channel joint surface 1202 are joined. At least one of the first channel joint surface 1101 and the second channel joint surface 1202 is processed by a finishing process.
  • the second channel portion 123 is formed with a third connection joint surface 1203.
  • the first connection joint surface 1102 and the third connection joint surface 1203 are joined.
  • the second connection joint surface 1201 and the third connection joint surface 1203 surround the bottom wall connection groove 125.
  • the second connection joint surface 1201, the second channel joint surface 1202, and the third connection joint surface 1203 are coplanar.
  • the primary air cavity 13 defines a primary air cavity 131 that communicates with the ejection channel.
  • the side wall of the primary air cavity 13 is provided with a cavity through hole 132 communicating with the primary air cavity 131.
  • the cavity through hole 132 serves as a second primary air inlet.
  • the primary air cavity 13 includes a ring member 133 and a cavity body 134.
  • the ring member 133 protrudes from the side of the bottom cup lid body 11.
  • the ring member 133 has an opening 1331 which forms a first primary air inlet.
  • a third supporting structure 1332 (corresponding to the first supporting structure in the claims) is formed on a side edge of the ring member 133 connected to the bottom cup lid body 11 upward.
  • the first support structure 117, the second support structure 118, and the third support structure 1332 have the same height.
  • the cavity body 134 protrudes from the side of the bottom cup holder 12.
  • the ring member 133 is provided on the top wall of the cavity body 134 and forms a primary air cavity 131 together.
  • the opening 1331 communicates with the primary air cavity 131.
  • a cavity through hole 132 is defined in a sidewall of the cavity body 134. Air can enter the primary air cavity 131 through the cavity through hole 132 and the opening 1331.
  • the planar shape of the ring member 133 is an arc shape.
  • a first positioning structure 135 (corresponding to the second positioning structure in the claims) is protruded outward from the side wall of the primary air cavity 13.
  • the first positioning structure 135 includes a first support plate 1351 and a second support plate 1352.
  • the first support plate 1351 is an arc plate
  • the second support plate 1352 is a flat plate.
  • the second supporting plate 1352 is provided with a second mounting hole 1353.
  • the nozzle holder 20 is detachably mounted on the side wall of the primary air cavity 13.
  • the nozzle holder 20 is located at the cavity through hole 132 and is configured to open at least a part of the cavity through hole 132.
  • the nozzle holder 20 may be manufactured by a core-pulling process.
  • the part of the opened cavity through hole 132 can be used as the second primary air inlet; when the nozzle holder 20 opens the entire cavity through hole 132, the entire cavity
  • the through hole 132 can serve as a second primary air inlet.
  • the nozzle holder 20 opens a part of the cavity through hole 132.
  • the nozzle holder 20 includes an air inlet portion 21, a baffle plate 22, a second positioning structure 23 (corresponding to the first positioning structure in the claims), and a mounting plate 24.
  • the baffle plate 22 is protruded on the air intake portion 21.
  • the height of the baffle 22 is adjustable so that the baffle 22 opens at least a part of the cavity through hole 132.
  • the nozzle holder 20 may omit the baffle plate 22 to achieve a larger second-time air inlet and increase the air inlet volume.
  • the height of the baffle plate 22 is zero, and the baffle plate 22 opens all the cavity through holes 132.
  • the first positioning structure 135 is connected to the second positioning structure 23 and jointly defines the position of the nozzle holder 20 on the bottom cup 10 from different at least two directions to fix the nozzle holder 20 and make the first nozzle 25 and the first ejection
  • the concentricity of the channel 101 is good, and the airflow velocity of the intake air of the first ejection channel 101 is guaranteed.
  • the mounting plate 24 is provided on the air intake portion 21.
  • the at least two directions mentioned above include two directions d1 and d2 that are perpendicular to each other.
  • the air intake portion 21 includes a first air intake pipe 211 and a second air intake pipe 212.
  • the first intake pipe 211 is provided with a first intake passage 2111.
  • a first nozzle 25 is installed at an air outlet of the first intake channel 2111, and the first nozzle 25 is opposite to the first ejection channel 101.
  • the second intake pipe 212 is provided with a second intake passage 2121.
  • a second nozzle 26 is installed at an air outlet of the second intake passage 2121.
  • the second intake pipe 212 is located at least partially within the mounting channel 126.
  • the second intake pipe 212 includes a horizontal pipe 2122 and a vertical pipe 2123, and the horizontal pipe 2122 is horizontally installed in the installation channel 126.
  • the vertical tube 2123 passes through the mounting through hole 127 and extends into the inner ring primary air cavity 14 of the bottom cup. More specifically, the primary air cavity 13 can be used as the outer ring primary air cavity, and the inner ring primary air cavity 14 is opened in the bottom cup lid body 11.
  • the central axis g of the first intake pipe 211 and the central axis h of the second intake pipe 212 are staggered in the thickness direction of the burner 100.
  • the thickness direction of the burner 100 is the vertical direction of FIG. 7 or FIG. 15.
  • the first intake pipe 211 and the second intake pipe 212 are both circular pipes, and the first intake pipe 211 is parallel to the second intake pipe 212.
  • the air intake portion 21 includes a first connection portion 213 (corresponding to a connection portion in the claims).
  • the first connection portion 213 connects the first intake pipe 211 and the second intake pipe 212.
  • the first connecting portion 213 is provided with an air inlet and a connecting channel.
  • the connecting passage communicates with at least the first intake passage 2111.
  • the connection passage communicates with the first intake passage 2111 and does not communicate with the second intake passage 2121, and the second intake pipe 212 is provided with an air inlet.
  • the gas enters through the air inlet of the first connection part 213 and the air inlet of the second air inlet pipe 212, and can realize separate air supply for the inner and outer rings.
  • connection passage can also communicate with the first intake passage 2111 and the second intake passage 2121.
  • the gas enters from the air inlet of the first connection part 213, so that the inner and outer rings can be jointly supplied with air, and the air inlet of the second air inlet pipe 212 can be sealed with a plug (not shown).
  • a first positioning surface 2132 is formed on a side of the first connection portion 213.
  • a second positioning surface 241 is formed on the bottom surface of the mounting plate 24.
  • the first positioning surface 2132 and the second positioning surface 241 constitute a second positioning structure 23.
  • the side surface of the first support plate 1351 is engaged with the first positioning surface 2132.
  • the top surface of the second support plate 1352 is engaged with the second positioning surface 241.
  • the number of the mounting plates 24 is two.
  • the two mounting plates 24 are respectively disposed on opposite sides of the first intake pipe 211.
  • the number of the second supporting plates 1352 is two.
  • the first support plate 1351 is connected to two second support plates 1352. In this way, the top surfaces of the two second supporting plates 1352 can be respectively engaged with the second positioning surfaces 241 of the two mounting plates 24.
  • the first support plate 1351 is a circular arc plate and can support the first intake pipe 211. That is, the first intake pipe 211 may be supported and positioned by the first support plate 1351.
  • the mounting plate 24 defines a third mounting hole 242.
  • the third mounting hole 242 is aligned with the second mounting hole 1353 of the second support plate 1352.
  • the third mounting hole 242 and the second mounting hole 1353 are used for a fastener (not shown) for fixing the nozzle holder 20 and the bottom cup 10.
  • the flamethrower 30 is mounted on the bottom cup cover 11.
  • the flamethrower 30 is located above the top wall 111.
  • the staggered portion of the top wall 111 and the flamethrower 30 can be used to set a liquid receiving tray (not shown), so that the installation space of the top wall 111 can be fully utilized, and the overall structure of the burner 100 is more compact.
  • the flamethrower 30 may be made of cast aluminum.
  • the flamethrower 30 includes an outer ring cavity 31 and an inner ring cavity 32.
  • the outer ring cavity 31 surrounds the inner ring cavity 32 at intervals.
  • the outer ring cavity 31 and the inner ring cavity 32 are connected by a second connection portion 33.
  • the flamethrower 30 is formed with a gas mixing chamber 34 and a fire hole 35 communicating with the gas mixing chamber 34.
  • the gas mixing chamber 34 includes an outer gas mixing chamber 341 and an inner gas mixing chamber 342.
  • the outer ring cavity 31 is provided with an outer gas mixing cavity 341 and an outer ring connection passage 36.
  • the outer ring connecting channel 36 communicates with the outer ring gas outlet 115 and the outer gas mixing cavity 341.
  • the inner ring cavity 32 is connected with a second ejection channel 37, and the second ejection channel 37 may have a Venturi effect.
  • the second ejection channel 37 is opposed to the second nozzle 26.
  • the second ejection channel 37 and the first ejection channel 101 are perpendicular to each other.
  • the second injection channel 37 is a vertical injection channel
  • the first injection channel 101 is a horizontal injection channel.
  • the second air inlet pipe 212 is disposed lower, so that the length of the pipe body forming the second injection channel 37 can be increased, so that the mixed gas for the inner ring cavity 32 can be fully mixed .
  • the fire hole 35 includes an outer ring fire hole 351 and an inner ring fire hole 352.
  • the outer ring fire hole 351 communicates with the outer gas mixing cavity 341.
  • the inner ring fire hole 352 communicates with the inner gas mixing cavity 342.
  • the outer ring air outlet 115 communicates with the first ejection channel 101 and the outer gas mixing cavity 341.
  • the inner ring air outlet 116 communicates with the second ejection channel 37 and the inner gas mixing cavity 342.
  • the number of the second connection portions 33 is four, and there are gaps between the four second connection portions 22. Air can enter the outside of the inner ring cavity 32 and the inside of the outer cavity cavity 31 from the gaps. To supplement the secondary air.
  • the flamethrower 30 includes a side wall 38 surrounding a gas mixing chamber 34.
  • the side wall 38 is provided with a plurality of spaced-apart fire holes 35, and a fire groove 39 is provided between two adjacent fire holes 35.
  • the fire groove 39 communicates with the gas mixing chamber 34 and two adjacent fire holes 35. More specifically, the fire groove 39 located in the outer ring cavity communicates with the outer gas mixing cavity 341 and the outer ring fire hole 351, and the fire groove 39 located in the inner ring cavity communicates with the inner gas mixing cavity 342 and the inner ring fire hole 352.
  • the fire groove 39 is T-shaped, and the flame transfer stability of the flame thrower 30 is better.
  • the inner ring cavity 32 is formed with positioning blocks 322 on both sides of the air inlet end of the second injection channel 37.
  • the positioning blocks 322 cooperate with the positioning grooves 119 on both sides of the inner ring air outlet 116.
  • the positioning block 322 can be inserted into the positioning groove 119.
  • the shape of the positioning block 322 is consistent with the shape of the positioning groove 119, and the positioning block 322 has a plate shape with a uniform thickness.
  • the number of the positioning grooves 119 and the positioning blocks 322 are two.
  • a fourth support structure 311, a fifth support structure 312, and a sixth support structure 313 are protruded from the bottom of the outer ring cavity 31 with a uniform height.
  • the fourth support structure 311 is coupled to the first support structure 117
  • the fifth support structure 312 is coupled to the second support structure 118
  • the sixth support structure 313 is coupled to the third support structure 1332.
  • the sixth support structure 313 and the third support structure 1332 form a partition partitioning the outer primary air and the inner primary air and the secondary air, so that the outer ring cavity
  • the primary air supply of 31 and inner ring cavity 32 do not affect each other.
  • the shape and size of the fourth support structure 311 and the first support structure 117 are consistent, the shape and size of the fifth support structure 312 and the second support structure 118 are consistent, and the sixth support structure 313 and the third support The structure 1332 has the same shape and size.
  • a gap 301 is formed between the outer ring cavity 31 and the bottom cup 10, and the gap 301 communicates with the air inlet of the second ejection channel 37.
  • Air can enter the second injection channel 37 from the gap 301 and mix with the gas.
  • the mixed first mixed gas exits the second injection channel 37 and enters the inner ring cavity 32, and is ejected from the inner ring fire hole 352.
  • Combustion forms an inner ring fire.
  • a primary air passage 302 is formed between the outer ring cavity 31 and the primary air cavity 13, and the primary air passage 302 communicates with the opening 1331 of the primary air cavity 13.
  • Air can enter the primary air cavity 131 from the primary air passage 302 and the opening 1331 (that is, the first primary air inlet), and enter the primary air cavity 131 from the cavity through hole 132 (that is, the secondary primary air inlet).
  • the ejection channel 101 is mixed with the gas. After the mixed second mixed gas is emitted through the first ejection channel 101, it is guided by the connection channel 102 to the outer ring gas outlet 115, and then enters the outer ring cavity 31. Outside injection, combustion forms an outer ring fire.
  • the outer ring cavity 31 may adopt an up-wind air intake method
  • the inner ring cavity 32 may adopt an up-air intake air method. Therefore, the thermal load of the burner 100, especially the outer ring cavity 31, is ensured.
  • the flamethrower 30 has a third center k (corresponding to the first center in the claims, and the dotted line m3 in FIG. 8 is the central axis where the third center k is located).
  • the first center x and the third center k are eccentrically disposed.
  • the bottom cup 10 can have more space to set the first ejection channel 101 longer, so that the first ejection channel 101 can have a larger ejection capacity, thereby increasing the thermal load of the burner 100, and can The amount of the mixed gas of the gas and the air entering the outer gas mixing chamber 341 is ensured, and the combustion stability of the burner 100 is guaranteed.
  • the third center k is concentric with the second center y.
  • the dotted line m3 coincides with the dotted line m2.
  • the third center k and the second center y may be offset from each other.
  • planar shape of the flamethrower 30 may be regular, for example, the planar shape of the flamethrower 30 shown in the figure is circular. In other embodiments, the planar shape of the flamethrower 30 may be an elliptical arc or a square.
  • the plane shape of the flamethrower 30 is circular and the plane shape of the primary air cavity 13 is arc-shaped, the center of the circle where the plane of the flamethrower 30 is located overlaps with the circle center where the plane of the primary air cavity 13 is located. This is more conducive to the mixing of gas and air.
  • the fire cover 40 includes an outer ring fire cover 41 and an inner ring fire cover 42.
  • the outer ring fire cover 41 is provided on the outer ring cavity 31.
  • the inner ring fire cover 42 is provided on the inner ring cavity 32.
  • the outer ring fire cover 41 and the inner ring fire cover 42 are spaced apart.
  • the inner part of the inner ring fire cover 42 is a solid structure.

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

Abstract

一种燃烧器(100)和燃气灶具。燃烧器(100)包括底杯(10)、设置在底杯(10)上的喷火器(30)和喷嘴座(20)。底杯(10)设置有一次空气腔体(13)。一次空气腔体(13)的顶部开设有第一一次空气开口，侧壁开设有作为第二一次空气开口的腔体通孔(132)。喷火器(30)包括外环腔体(31)及内环腔体(32)。底杯(10)开设有第一引射通道(101)。外环腔体(31)开设有由第一引射通道(101)供给混合气体的外燃气混合腔(341)。内环腔体(32)开设有内燃气混合腔(342)且连接有第二引射通道(37)，内燃气混合腔(342)的混合气体由第二引射通道(37)供给。外环腔体(31)与底杯(10)之间形成有连通第二引射通道(37)的进气口的间隙(301)。外环腔体(31)与一次空气腔体(13)之间形成有连通第一一次空气进口的一次空气通道(302)。

Description

燃烧器及燃气灶具
优先权信息
本申请请求2018年09月04日向中国国家知识产权局提交的、专利申请号为201811027492.8和201821444477.9的专利申请的优先权和权益，并且通过参照将其全文并入此处。
技术领域
本申请涉及烹饪器具技术领域，尤其涉及一种燃烧器及燃气灶具。
背景技术
目前，燃气灶具的燃烧器较常见的是下进风燃烧器或上进风燃烧器。下进风燃烧器的一次空气从面板下方的底壳中引入，橱柜门开关严重影响保火火焰的稳定性。上进风燃烧器的一次空气从面板上方引入，因受燃烧器结构的限制，文丘里管设计较短，空气和燃气容易混合不均匀，难以保证燃烧器的热负荷。
发明内容
本申请提供一种燃烧器及燃气灶具。
本申请实施方式的燃烧器，包括底杯、喷火器和喷嘴座，所述喷火器设置在所述底杯上，所述底杯设置有一次空气腔体，所述喷嘴座安装在所述一次空气腔体的侧壁，所述一次空气腔体的顶部开设有第一一次空气进口，所述一次空气腔体的侧壁开设有作为第二一次空气进口的腔体通孔；
所述喷火器包括外环腔体及内环腔体，所述外环腔体围绕所述内环腔体，所述底杯开设有第一引射通道，所述外环腔体开设有外燃气混合腔，所述外燃气混合腔的混合气体由所述第一引射通道供给，所述内环腔体开设有内燃气混合腔，所述内环腔体连接有第二引射通道，所述内燃气混合腔的混合气体由所述第二引射通道供给；
所述外环腔体与所述底杯之间形成有间隙，所述间隙连通所述第二引射通道的进气口，所述外环腔体与所述一次空气腔体之间形成有一次空气通道，所述一次空气通道连通所述第一一次空气进口。
上述燃烧器中，空气可从间隙进入第二引射通道而与燃气混合，使得内环腔体可采用上进风的进气方式；空气可从第一一次空气进口进入一次空气腔，也可从第二一次空气进口进入一次空气腔，使得外环腔体可采用上下进风的进气方式。如此，可实现外环腔体的上下进风以及内环腔体的上进风设计，保证了燃烧器，特别是外环腔体的热负荷。
在某些实施方式中，所述底杯的底部开设有安装通道，所述喷嘴座包括第一进气管和第二进气管，所述第一进气管开设有第一进气通道，所述第二进气管开设有第二进气通道，所述第一进气通道的出气口安装有第一喷嘴，所述第一喷嘴与所述第一引射通道相对，所述第二进气通道的出气口安装有第二喷嘴，所述第二引射通道与所述第二喷嘴相对，所述第二进气管至少部分地位于所述安装通道内。
在某些实施方式中，所述一次空气腔体凸设在所述底杯的侧边，所述一次空气腔体开设有一次空气腔，所述第一喷嘴位于所述一次空气腔内，所述第一引射通道连通所述一次空气腔，所述安装 通道贯穿所述一次空气腔体的侧面和底面。
在某些实施方式中，所述喷嘴座包括进气部和凸设在所述进气部上的挡板，所述挡板的高度是可调节的以使所述挡板开放所述腔体通孔的至少一部分。
在某些实施方式中，所述喷嘴座包括第一定位结构，所述一次空气腔体的侧壁向外凸设有第二定位结构，所述第一定位结构与所述第二定位结构连接并从不同的至少两个方向共同限定所述喷嘴座在所述底杯上的位置。
在某些实施方式中，所述喷嘴座包括连接部和安装板，所述连接部连接所述第一进气管和所述第二进气管，所述连接部的侧面形成有第一定位面，所述安装板的底面形成有第二定位面，所述第一定位面和所述第二定位面构成所述第一定位结构，所述第二定位结构包括第一支撑板和第二支撑板，所述第一支撑板的侧面与所述第一定位面接合，所述第二支撑板的顶面与所述第二定位面接合。
在某些实施方式中，所述安装板的数量是两个，所述两个安装板分别设置在所述第一进气管相背的两侧，所述第二支撑板的数量是两个，所述第一支撑板连接所述两个第二支撑板。
在某些实施方式中，所述至少两个方向包括相互垂直的两个方向。
在某些实施方式中，所述喷嘴座包括连接部，所述连接部连接所述第一进气管和所述第二进气管，所述连接部开设有连接通道，所述连接通道至少连通所述第一进气通道。
在某些实施方式中，所述第一进气管的中心轴和所述第二进气管的中心轴在所述燃烧器厚度方向上错开设置。
在某些实施方式中，所述底杯开设有单个所述第一引射通道。
在某些实施方式中，所述喷嘴座可拆卸地安装在所述底杯。
在某些实施方式中，所述喷火器具有第一中心，所述底杯具有第二中心，所述第一中心与所述第二中心偏心设置。
在某些实施方式中，所述一次空气腔体具有第三中心，所述第三中心与所述第二中心偏心设置。
在某些实施方式中，所述底杯包括底杯盖体和底杯座体，所述底杯盖体安装于所述底杯座体。
在某些实施方式中，所述底杯盖体包括顶壁和第一安装壁，所述第一安装壁凸设在所述顶壁；所述底杯座体包括底壁和第二安装壁，所述第二安装壁凸设在所述底壁，所述顶壁和所述底壁相对，所述底壁和所述第二安装壁共同形成有安装槽，所述第一安装壁至少部分地嵌入所述安装槽并与所述第二安装壁至少部分地重叠接合。
在某些实施方式中，所述顶壁开设有外环出气口和内环出气口，所述外环出气口连通所述第一引射通道和所述外燃气混合腔，所述内环出气口连通所述第二引射通道和所述内燃气混合腔。
在某些实施方式中，所述一次空气腔体包括环形件和腔体本体，所述环形件由所述底杯盖体的侧边凸出，所述环形件具有开口，所述开口形成所述第一一次空气进口，所述腔体本体由所述底杯座体的侧边凸出，所述环形件设于所述腔体本体的顶壁并共同形成一次空气腔，所述开口连通所述一次空气腔。
在某些实施方式中，所述环形件与所述底杯盖体连接的一侧边缘向上凸起形成有第一支撑结构，所述外环腔体的底部凸设有第二支撑结构，所述第一支撑结构与所述第二支撑结构配合连接。
本申请实施方式的燃气灶具包括上述任一实施方式所述的燃烧器。
上述燃气灶具中，空气可从间隙进入第二引射通道而与燃气混合，使得内环腔体可采用上进风的进气方式；空气可从第一一次空气进口进入一次空气腔，也可从第二一次空气进口进入一次空气腔，使得外环腔体可采用上下进风的进气方式。如此，可实现外环腔体的上下进风以及内环腔体的上进风设计，保证了燃烧器，特别是外环腔体的热负荷。
本申请实施例的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明 显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1是本申请实施方式的燃烧器的立体示意图；
图2是本申请实施方式的燃烧器的另一立体示意图；
图3是本申请实施方式的燃烧器的立体分解示意图；
图4是本申请实施方式的燃烧器的底杯的立体示意图；
图5是本申请实施方式的燃烧器的底杯的立体分解示意图；
图6是本申请实施方式的燃烧器的俯视图；
图7是图6的燃烧器沿剖面线B的剖面示意图；
图8是本申请实施方式的燃烧器的侧视图；
图9是本申请实施方式的燃烧器的底杯上盖的立体示意图；
图10是本申请实施方式的燃烧器的底杯上盖的另一立体示意图；
图11是本申请实施方式的燃烧器的底杯座体的立体示意图；
图12是本申请实施方式的燃烧器的底杯座体的另一立体示意图；
图13是本申请实施方式的燃烧器的喷嘴座的立体示意图；
图14是本申请实施方式的燃烧器的喷嘴座的另一立体示意图；
图15是图6的燃烧器沿剖面线A的剖面示意图；
图16是本申请实施方式的燃烧器的底杯座体和喷嘴座的立体示意图；
图17是本申请实施方式的燃烧器的底杯座体和喷嘴座的另一立体示意图；
图18是本申请实施方式的燃烧器的喷火器的立体示意图；
图19是图18的燃烧器的喷火器I部分的放大示意图；
图20是本申请实施方式的燃烧器的喷火器的另一立体示意图。
主要元件符号说明：
燃烧器100；
底杯10、第一引射通道101、连接通道102、底杯盖体11、第一接合面110、第一通道接合面1101、第一连接接合面1102、顶壁111、第一安装壁112、第一通道部113、第一凹槽1131、盖体连接槽114、外环出气口115、内环出气口116、第一支撑结构117、第二支撑结构118、定位槽119、底杯座体12、第二接合面120、第二连接接合面1201、第二通道接合面1202、第三连接接合面1203、底壁121、第二安装壁122、第二通道部123、第二凹槽1231、第一安装槽124、底壁连接槽125、安装通道126、安装通孔127、一次空气腔体13、一次空气腔131、腔体通孔132、环形件133、开口1331、第三支撑结构1332、腔体本体134、第一定位结构135、第一支撑板1351、第二支撑板1352、第二安装孔1353、内环一次空气腔14；
喷嘴座20、进气部21、第一进气管211、第一进气通道2111、第二进气管212、第二进气通道2121、水平管2122、竖直管2123、第一连接部213、第一定位面2132、挡板22、第二定位结构23、安装板24、第二定位面241、第三安装孔242、第一喷嘴25、第二喷嘴26；
喷火器30、间隙301、一次空气通道302、外环腔体31、第四支撑结构311、第五支撑结构312、第六支撑结构313、内环腔体32、定位块322、第二连接部33、燃气混合腔34、外燃气混合腔341、 内燃气混合腔342、火孔35、外环火孔351、内环火孔352、外环连接通道36、第二引射通道37、侧壁38、火槽39；
火盖40、外环火盖41、内环火盖42。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请的描述中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施例或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施例和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
需要指出的是，本申请的“第一”、“第二”…等元件或部件前所带的编号，是按引出这些元件的顺序而编号，旨在将这些元件与其它元件在名称上作区别说明，由此，可能会出现权利要求书引出某个元件的顺序与说明书，特别是具体实施方式引出的该元件的顺序不同。在这种情况下，为方便理解，会在具体实施方式作特别说明。
请参阅图1至图3，本申请实施方式的燃烧器100包括底杯10、喷嘴座20、喷火器30和火盖40。喷火器30设置在底杯10上。底杯10设置有一次空气腔体13，喷嘴座20安装于一次空气腔体13的侧边。本申请实施方式的燃烧器100可应用于本申请实施方式的燃气灶具。
请参阅图4和图5，底杯10包括底杯盖体11和底杯座体12。底杯盖体11安装于底杯座体12，例如底杯盖体11与底杯座体12为铆接。为了增大一次空气腔体13，本申请实施方式中，一次空气 腔体13凸设在底杯10的侧边。一次空气腔体13的顶部开设有第一一次空气进口。
请参阅图5至图7，底杯10内开设有具有文丘里(Venturi)效应的第一引射通道101。底杯10内开设有连接通道102。连接通道102对空气和燃气的混合气体具有导向的作用。连接通道102是弧形底面，连接通道102与第一引射通道101的出气端弧面连接，这样可降低气流在连接通道102内流动的阻力。为了保证由连接通道102流出的气流的流速，可使连接通道102沿气流流动方向呈渐缩变化。连接通道102和第一引射通道101可共同构成底杯10的燃气和空气的混合气体通道。另外，可沿底杯的10厚度方向(如图7所示的上下方向)开设贯穿底杯10的第一安装孔(图未示出)。第一安装孔可用于安装热电偶(图未示出)和点火针(图未示出)。
在本申请实施方式中，底杯10内开设有单个第一引射通道101和单个连接通道102。另外，第一引射通道101的单边分气可以最大限度地减小气流流动的阻力。在图7的示例中，第一引射通道101是基本水平地布置。
请参阅图6和图8，底杯13具有第一中心x(对应于权利要求中的第二中心，图8中的虚线m1为第一中心x所在的中轴线)。一次空气腔体13具有第二中心y(对应于权利要求中的第三中心，图8中的虚线m2为第二中心y所在的中轴线)。第一中心x与第二中心y偏心设置。
具体地，请结合图6，在图示的实施方式中，底杯盖体11和底杯座体12的平面形状呈规则形，一次空气腔体13的平面形状呈规则形。例如，底杯座体12和底杯盖体11的平面形状均呈圆形，第一中心x为底杯10的平面所在的圆的圆心，一次空气腔体13的平面形状呈圆弧形，第二中心y为一次空气腔体13的平面所在的圆的圆心。
可以理解，在其它实施方式中，底杯10的平面形状呈方形，第一中心x为底杯10的平面所在的方形的对角线的交点，一次空气腔体13的平面形状呈圆弧形，第二中心y为一次空气腔体13的平面所在的圆的圆心。这样一方面能够增大一次空气腔体13，保证一次空气的进气量，另一方面，也有利于增长第一引射通道101，使得燃气和空气能够在第一引射通道101内充分混合，进而有利于提高燃烧器100的燃烧效率。可以理解，在另外的实施方式中，底杯盖体11、底杯座体12和一次空气腔体13还可呈其他形状。
请参阅图9和图10，底杯盖体11包括顶壁111、第一安装壁112和第一通道部113。底杯盖体11形成有第一接合面110。底杯盖体11开设有盖体连接槽114。盖体连接槽114位于第一通道部113和第一安装壁112之间。
顶壁111开设有外环出气口115和内环出气口116。第一引射通道101通过连接通道102连通外环出气口115。这样由第一引射通道101引射出的燃气和空气的混合气体可由外环出气口115供至喷火器30以供燃烧。
具体地，连接通道102连接第一引射通道101的出气端和外环出气口115。为了增加外环出气口115的出气面积并保证出气的均匀性，外环出气口115设置呈弧形状，例如圆弧形。另外，外环出气口115的边缘由顶壁111的表面凸出形成有第一支撑结构117。内环出气口116的两侧形成有定位槽119。
请参图9，顶壁111的上表面形成有第二支撑结构118。
请结合图10，第一安装壁112凸设在顶壁111。第一通道部113凸设在顶壁111。第一安装壁112围绕第一通道部113。
第一通道部113开设有第一凹槽1131。第一通道部113形成有位于第一凹槽1131两侧的第一通道接合面1101。第一通道部113形成有第一连接接合面1102。第一通道接合面1101、第一连接接合面1102和第一安装壁112的端面共面。第一接合面110包括第一通道接合面1101、第一连接 接合面1102和第一安装壁112的端面。
请参阅图11和图12，底杯座体12包括底壁121、第二安装壁122和第二通道部123。第二安装壁122凸设在底壁121。顶壁111和底壁121相对。底壁121与第一接合面110相对。
具体地，底壁121和第二安装壁122共同形成有第一安装槽124(对应于权利要求中的安装槽)。第一安装壁112至少部分地嵌入第一安装槽124并与第二安装壁122至少部分地重叠接合，即底杯盖体11安装于底杯座体12并部分地位于第一安装槽124内。
在本申请实施方式中，第一安装壁112和第二安装壁122沿燃烧器100内部向外部方向(如图7的水平方向)重叠接合。如此，在燃烧器100工作时，由于底杯10的温度上升而使得第一安装壁112和第二安装壁122接合得更加紧密，进而可保证底杯10具有较佳的密封性能，使得底杯盖体11安装于底杯座体12的密封性能较佳，底杯10不容易漏气。这样不会造成喷火器30的空气和燃气的混合气体的量不足而影响燃烧器100的正常工作(漏气最主要的危害是有安全隐患)。在一个例子中，底杯10可采用铸铝制成。在本申请实施方式中，第一安装壁112较第二安装壁122更靠近底杯10的第一中心x。
底壁121开设有底壁连接槽125。盖体连接槽114和底壁连接槽125共同形成连接通道102。底壁121的顶面形成有第二接合面120。第二安装壁122围绕第二接合面120。第一接合面110和第二接合面120接合。第一接合面110和第二接合面120中的至少一个是采用精车加工工艺处理过。这样密封效果较佳。
第二接合面120包括第二连接接合面1201、第二通道接合面1202和第三连接接合面1203。第一安装壁112的端面和第二连接接合面1201接合。另外，底杯10的底部开设有安装通道126和安装通孔127。安装通道126连接安装通孔127。安装通道126贯穿一次空气腔体13的侧面和底面。
为了提高密封效果，第一安装壁112的端面与底壁121的顶面相接。需要说明的是，第一安装壁112的端面与底壁121的顶面的相接处也可采用精车加工工艺处理。即，第一安装壁112的端面可采用精车加工工艺处理，或者与第一安装壁112相接的底壁121的顶面的部位可采用精车加工工艺处理，或者第一安装壁112的端面和与第一安装壁112相接的底壁121的顶面的部位(即第二连接接合面1201)均采用精车加工工艺处理。
第二通道部123位于第一安装槽124的底部。第一通道部113和第二通道部123连接。第二安装壁122围绕第二通道部123。第二通道部123开设有第二凹槽1231。第一凹槽1131和第二凹槽1231共同形成第一引射通道101。这样便于第一引射通道101的加工成型。
第二通道部123形成有位于第二凹槽1231两侧的第二通道接合面1202。第一通道接合面1101和第二通道接合面1202接合。第一通道接合面1101和第二通道接合面1202中的至少一个是采用精车加工工艺处理过。第二通道部123形成有第三连接接合面1203。第一连接接合面1102和第三连接接合面1203接合。第二连接接合面1201和第三连接接合面1203围绕底壁连接槽125。第二连接接合面1201、第二通道接合面1202和第三连接接合面1203共面。
请参阅图4和图5，一次空气腔体13开设有连通引射通道的一次空气腔131。一次空气腔体13的侧壁开设有连通一次空气腔131的腔体通孔132。腔体通孔132作为第二一次空气进口。
具体地，一次空气腔体13包括环形件133和腔体本体134。环形件133由底杯盖体11的侧边凸出。环形件133具有开口1331，开口1331形成第一一次空气进口。环形件133与底杯盖体11连接的一侧边缘向上凸起形成有第三支撑结构1332(对应于权利要求中的第一支撑结构)。第一支撑结构117、第二支撑结构118和第三支撑结构1332高度一致。
腔体本体134由底杯座体12的侧边凸出。环形件133设于腔体本体134的顶壁并共同形成一 次空气腔131。开口1331连通一次空气腔131。腔体本体134的侧壁开设腔体通孔132。空气可由腔体通孔132和开口1331进入一次空气腔131内。其中，环形件133的平面形状呈弧形状。
请结合图3和图5，一次空气腔体13的侧壁向外凸设有第一定位结构135(对应于权利要求中的第二定位结构)。第一定位结构135包括第一支撑板1351和第二支撑板1352。其中，在图示的实施方式中，第一支撑板1351为圆弧板，第二支撑板1352为平板。第二支撑板1352开设有第二安装孔1353。
为了方便喷嘴座20的维修和保养，喷嘴座20可拆卸地安装于一次空气腔体13的侧壁。喷嘴座20位于腔体通孔132处且被配置成开放腔体通孔132的至少一部分。需要说明的是，喷嘴座20可采用抽芯工艺制造。当喷嘴座20开放腔体通孔132的一部分时，被开放的腔体通孔132的部分可作为第二一次空气进口；当喷嘴座20开放腔体通孔132的全部时，整个腔体通孔132可作为第二一次空气进口。在本申请实施方式中，喷嘴座20开放腔体通孔132的一部分。
请参阅图3，图13和图14，喷嘴座20包括进气部21、挡板22、第二定位结构23(对应于权利要求中的第一定位结构)和安装板24。挡板22凸设在进气部21上。挡板22的高度是可调节的以使挡板22开放腔体通孔132的至少一部分。
可以理解，在其它实施方式中，喷嘴座20可省略挡板22，以实现更大的第二一次空气进口，提高进风量。在这种情况下，也可以理解为，挡板22的高度为零，挡板22开放腔体通孔132的全部。
第一定位结构135与第二定位结构23连接并从不同的至少两个方向共同限定喷嘴座20在底杯10上的位置，以固定喷嘴座20，并且使得第一喷嘴25与第一引射通道101的同心度较好，保证了第一引射通道101的进气的气流速度。安装板24设置在进气部21上。其中，较佳地，上述的至少两个方向包括相互垂直的两个方向d1和d2。
请参阅图7、图13、图15至图17，进气部21包括第一进气管211和第二进气管212。第一进气管211开设有第一进气通道2111。第一进气通道2111的出气口安装有第一喷嘴25，第一喷嘴25与第一引射通道101相对。第二进气管212开设有第二进气通道2121。第二进气通道2121的出气口安装有第二喷嘴26。第二进气管212至少部分地位于安装通道126内。在图15中，第二进气管212包括水平管2122和竖直管2123，水平管2122水平地安装在安装通道126。竖直管2123穿过安装通孔127并伸入底杯的内环一次空气腔14。更具体地，一次空气腔13可作为外环一次空气腔，内环一次空气腔14开设在底杯盖体11。
在本申请实施方式中，请结合图7和图15，第一进气管211的中心轴g和第二进气管212的中心轴h在燃烧器100厚度方向上错开设置。燃烧器100厚度方向为图7或图15的上下方向。第一进气管211和第二进气管212均为圆管，第一进气管211平行于第二进气管212。
进气部21包括第一连接部213(对应于权利要求中的连接部)。第一连接部213连接第一进气管211和第二进气管212。第一连接部213开设有进气口和连接通道。连接通道至少连通第一进气通道2111。在本申请实施方式中，连接通道连通第一进气通道2111，而不连通第二进气通道2121，第二进气管212开设有进气口。燃气从第一连接部213的进气口和第二进气管212的进气口进入，可实现内外环单独供气。当然，连接通道也可以连通第一进气通道2111和第二进气通道2121。燃气从第一连接部213的进气口进入，可实现内外环共同供气，而第二进气管212的进气口可采用堵头(图未示出)进行密封。
请参阅图14，第一连接部213的侧面形成有第一定位面2132。安装板24的底面形成有第二定位面241。第一定位面2132和第二定位面241构成第二定位结构23。第一支撑板1351的侧面与第 一定位面2132接合。第二支撑板1352的顶面与第二定位面241接合。
为了进一步提高喷嘴座20安装的稳定性，安装板24的数量是两个。两个安装板24分别设置在第一进气管211相背的两侧。第二支撑板1352的数量是两个。第一支撑板1351连接两个第二支撑板1352。这样两个第二支撑板1352的顶面能够分别与两个安装板24的第二定位面241接合。第一支撑板1351是圆弧板，可托住第一进气管211。也即是说，第一进气管211可由第一支撑板1351支撑并定位。
请参阅图13，安装板24开设有第三安装孔242。第三安装孔242与第二支撑板1352的第二安装孔1353对准。第三安装孔242和第二安装孔1353用于供紧固件(图未示出)固定喷嘴座20和底杯10。
请参阅图1和图8，喷火器30安装于底杯盖体11上。在本实施方式中，喷火器30位于顶壁111的上方。顶壁111与喷火器30错开的部分可用于设置承液盘(图未示出)，这样可充分利用顶壁111的安装空间，并使得燃烧器100整体的结构更紧凑。在一个例子中，喷火器30可采用铸铝制成。
请参阅图18至图20，喷火器30包括外环腔体31和内环腔体32。外环腔体31间隔围绕内环腔体32。外环腔体31和内环腔体32通过第二连接部33连接。喷火器30形成有燃气混合腔34和与燃气混合腔34连通的火孔35。燃气混合腔34包括外燃气混合腔341和内燃气混合腔342。外环腔体31开设有外燃气混合腔341和外环连接通道36。外环连接通道36连通外环出气口115和外燃气混合腔341。内环腔体32连接有第二引射通道37，第二引射通道37可具有文丘里效应。第二引射通道37与第二喷嘴26相对。第二引射通道37与第一引射通道101互相垂直。在本申请实施方式中，第二引射通道37为垂直引射通道，第一引射通道101为水平引射通道。另外，相对于第一进气管211，第二进气管212设置得更靠下，这样可增加形成第二引射通道37的管体的长度，使得供内环腔体32的混合气体能够充分混合。
火孔35包括外环火孔351和内环火孔352。外环火孔351连通外燃气混合腔341。内环火孔352连通内燃气混合腔342。外环出气口115连通第一引射通道101和外燃气混合腔341。内环出气口116连通第二引射通道37和内燃气混合腔342。
在图18的示例中，第二连接部33的数量为四个，四个第二连接部22之间存在空隙，空气可以从空隙进入内环腔体32的外侧和外腔腔体31的内侧，以补充二次空气。
为了增大火孔35面积，并提高火孔35的引射能力，火孔35的根部呈弧形，这样加工也较为方便。喷火器30包括围成燃气混合腔34的侧壁38。侧壁38开设有间隔的多个火孔35，相邻两个火孔35之间开设有火槽39。火槽39连通燃气混合腔34和相邻两个火孔35。更具体地，位于外环腔体的火槽39连通外燃气混合腔341和外环火孔351，位于内环腔体的火槽39连通内燃气混合腔342和内环火孔352。在图示的实施方式中，火槽39呈T形，喷火器30传火的稳定性更佳。
为了便于喷火器30的安装，内环腔体32在第二引射通道37的进气端的两侧形成有定位块322。定位块322与内环出气口116两侧的定位槽119配合。定位块322可插入定位槽119。为了提高安装的稳定性，定位块322的形状与定位槽119的形状相一致，定位块322呈厚度一致的板状。在本申请实施方式中，定位槽119和定位块322的数量均为两个。
外环腔体31的底部凸设有高度一致的第四支撑结构311、第五支撑结构312和第六支撑结构313(对应于权利要求中的第二支撑结构)。第四支撑结构311与第一支撑结构117配合连接，第五支撑结构312与第二支撑结构118配合连接，第六支撑结构313与第三支撑结构1332配合连接。如此，将喷火器30安装在底杯10上时，第六支撑结构313和第三支撑结构1332形成隔开外环一 次空气和内环一次空气与二次空气的隔板，使得外环腔体31和内环腔体32的一次空气的供给相互不影响。
为了喷火器30与底杯10安装稳定，第四支撑结构311与第一支撑结构117形状尺寸一致，第五支撑结构312与第二支撑结构118形状尺寸一致，第六支撑结构313与第三支撑结构1332形状尺寸一致。
请参阅图1和图15，外环腔体31与底杯10之间形成有间隙301，间隙301连通第二引射通道37的进气口。空气可从间隙301进入第二引射通道37而与燃气混合，混合后的第一混合气体经第二引射通道37出射后进入内环腔体32，由内环火孔352向外喷射，燃烧形成内环火。外环腔体31与一次空气腔体13之间形成有一次空气通道302，一次空气通道302连通一次空气腔体13的开口1331。空气可从一次空气通道302和开口1331(即第一一次空气进口)进入一次空气腔131及从腔体通孔132(即第二一次空气进口)进入一次空气腔131，然后在第一引射通道101与燃气混合，混合后的第二混合气体经第一引射通道101出射后由连接通道102导向外环出气口115，再进入外环腔体31，由外环火孔351向外喷射，燃烧形成外环火。如此，外环腔体31可采用上下进风的进气方式，内环腔体32可采用上进风的进气方式。因此，保证了燃烧器100，特别是外环腔体31的热负荷。
请参阅图6和图8，喷火器30具有第三中心k(对应于权利要求中的第一中心，图8中的虚线m3为第三中心k所在的中轴线)。第一中心x与第三中心k偏心设置。这样底杯10能够有更多空间将第一引射通道101设置得较长，从而能够使得第一引射通道101具有较大的引射能力，从而能够提高燃烧器100的热负荷，而且可保证进入外燃气混合腔341内的燃气和空气的混合气体的量，继而保证燃烧器100燃烧的稳定性。在本实施方式中，第三中心k与第二中心y同心。虚线m3与虚线m2重合。当然，可以理解，在其它实施方式中，第三中心k与第二中心y也可偏离设置。
需要说明的是，喷火器30的平面形状可呈规则形，例如图示的喷火器30的平面形状呈圆形。在其他实施方式中，喷火器30的平面形状可为椭圆弧形或者方形等。在喷火器30的平面形状呈圆形并且一次空气腔体13的平面形状呈圆弧形时，喷火器30的平面所在的圆的圆心与一次空气腔体13的平面所在的圆的圆心重叠。这样更有利于燃气和空气的混合。
火盖40包括外环火盖41和内环火盖42。外环火盖41设在外环腔体31上。内环火盖42设在内环腔体32上。外环火盖41和内环火盖42间隔开。内环火盖42的中部为实心结构。
在本说明书的描述中，参考术语“一个实施例”、“某些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合所述实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (20)

  1. 一种燃烧器，其特征在于，包括底杯、喷火器和喷嘴座，所述喷火器设置在所述底杯上，所述底杯设置有一次空气腔体，所述喷嘴座安装在所述一次空气腔体的侧壁，所述一次空气腔体的顶部开设有第一一次空气进口，所述一次空气腔体的侧壁开设有作为第二一次空气进口的腔体通孔；
    所述喷火器包括外环腔体及内环腔体，所述外环腔体围绕所述内环腔体，所述底杯开设有第一引射通道，所述外环腔体开设有外燃气混合腔，所述外燃气混合腔的混合气体由所述第一引射通道供给，所述内环腔体开设有内燃气混合腔，所述内环腔体连接有第二引射通道，所述内燃气混合腔的混合气体由所述第二引射通道供给；
    所述外环腔体与所述底杯之间形成有间隙，所述间隙连通所述第二引射通道的进气口，所述外环腔体与所述一次空气腔体之间形成有一次空气通道，所述一次空气通道连通所述第一一次空气进口。
  2. 如权利要求1所述的燃烧器，其特征在于，所述底杯的底部开设有安装通道，所述喷嘴座包括第一进气管和第二进气管，所述第一进气管开设有第一进气通道，所述第二进气管开设有第二进气通道，所述第一进气通道的出气口安装有第一喷嘴，所述第一喷嘴与所述第一引射通道相对，所述第二进气通道的出气口安装有第二喷嘴，所述第二引射通道与所述第二喷嘴相对，所述第二进气管至少部分地位于所述安装通道内。
  3. 如权利要求2所述的燃烧器，其特征在于，所述一次空气腔体凸设在所述底杯的侧边，所述一次空气腔体开设有一次空气腔，所述第一喷嘴位于所述一次空气腔内，所述第一引射通道连通所述一次空气腔，所述安装通道贯穿所述一次空气腔体的侧面和底面。
  4. 如权利要求3所述的燃烧器，其特征在于，所述喷嘴座包括进气部和凸设在所述进气部上的挡板，所述挡板的高度是可调节的以使所述挡板开放所述腔体通孔的至少一部分。
  5. 如权利要求2所述的燃烧器，其特征在于，所述喷嘴座包括第一定位结构，所述一次空气腔体的侧壁向外凸设有第二定位结构，所述第一定位结构与所述第二定位结构连接并从不同的至少两个方向共同限定所述喷嘴座在所述底杯上的位置。
  6. 如权利要求5所述的燃烧器，其特征在于，所述喷嘴座包括连接部和安装板，所述连接部连接所述第一进气管和所述第二进气管，所述连接部的侧面形成有第一定位面，所述安装板的底面形成有第二定位面，所述第一定位面和所述第二定位面构成所述第一定位结构，所述第二定位结构包括第一支撑板和第二支撑板，所述第一支撑板的侧面与所述第一定位面接合，所述第二支撑板的顶面与所述第二定位面接合。
  7. 如权利要求6所述的燃烧器，其特征在于，所述安装板的数量是两个，所述两个安装板分别设置在所述第一进气管相背的两侧，所述第二支撑板的数量是两个，所述第一支撑板连接所述两个第二支撑板。
  8. 如权利要求5所述的燃烧器，其特征在于，所述至少两个方向包括相互垂直的两个方向。
  9. 如权利要求2所述的燃烧器，其特征在于，所述喷嘴座包括连接部，所述连接部连接所述第一进气管和所述第二进气管，所述连接部开设有连接通道，所述连接通道至少连通所述第一进气通道。
  10. 如权利要求2所述的燃烧器，其特征在于，所述第一进气管的中心轴和所述第二进气管的中心轴在所述燃烧器厚度方向上错开设置。
  11. 如权利要求1所述的燃烧器，其特征在于，所述底杯开设有单个所述第一引射通道。
  12. 如权利要求1所述的燃烧器，其特征在于，所述喷嘴座可拆卸地安装在所述底杯。
  13. 如权利要求1所述的燃烧器，其特征在于，所述喷火器具有第一中心，所述底杯具有第二中心，所述第一中心与所述第二中心偏心设置。
  14. 如权利要求13所述的燃烧器，其特征在于，所述一次空气腔体具有第三中心，所述第三中心与所述第二中心偏心设置。
  15. 如权利要求1所述的燃烧器，其特征在于，所述底杯包括底杯盖体和底杯座体，所述底杯盖体安装于所述底杯座体。
  16. 如权利要求15所述的燃烧器，其特征在于，所述底杯盖体包括顶壁和第一安装壁，所述第一安装壁凸设在所述顶壁；
    所述底杯座体包括底壁和第二安装壁，所述第二安装壁凸设在所述底壁，所述顶壁和所述底壁相对，所述底壁和所述第二安装壁共同形成有安装槽，所述第一安装壁至少部分地嵌入所述安装槽并与所述第二安装壁至少部分地重叠接合。
  17. 如权利要求16所述的燃烧器，其特征在于，所述顶壁开设有外环出气口和内环出气口，所述外环出气口连通所述第一引射通道和所述外燃气混合腔，所述内环出气口连通所述第二引射通道和所述内燃气混合腔。
  18. 如权利要求15所述的燃烧器，其特征在于，所述一次空气腔体包括环形件和腔体本体，所述环形件由所述底杯盖体的侧边凸出，所述环形件具有开口，所述开口形成所述第一一次空气进口，所述腔体本体由所述底杯座体的侧边凸出，所述环形件设于所述腔体本体的顶壁并共同形成一次空气腔，所述开口连通所述一次空气腔。
  19. 如权利要求18所述的燃烧器，其特征在于，所述环形件与所述底杯盖体连接的一侧边缘向上凸起形成有第一支撑结构，所述外环腔体的底部凸设有第二支撑结构，所述第一支撑结构与所述第二支撑结构配合连接。
  20. 一种燃气灶具，其特征在于，包括权利要求1-19任一项所述的燃烧器。
PCT/CN2018/109341 2018-09-04 2018-10-08 燃烧器及燃气灶具 WO2020047933A1 (zh)

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