Gas distribution disc, burner and gas stove

Abstract

The application relates to the technical field of gas stoves, and discloses a gas distribution disc, a burner and a gas stove. The gas distribution disc comprises a lower gas distribution disc which defines a plurality of gas distribution channels, and the plurality of gas distribution channels are sequentially arranged in a direction from inside to outside; the lower gas distribution disc is provided with an air inlet, the air inlet is communicated with the gas distribution channels, so that gas flows into the gas distribution channels through the air inlet; wherein at least two adjacent gas distribution channels share one air inlet. Since the number of air inlets is reduced, the number of ejection pipes matched with the air inlets and control valves and the like can be reduced. Therefore, the size of the burner of the embodiment of the disclosure can be reduced compared with the size of a burner with a ring fire, and the installation of the burner is facilitated, and the convenience of the installation of the burner is improved.

Description

Technical Field

[0001] This application relates to the field of gas stove technology, such as a gas distribution plate, burner and gas stove. Background Technology

[0002] Today, gas stoves, as a convenient and quick cooking appliance, have become widespread in the kitchens of countless households. The burner of a gas stove can use liquefied petroleum gas, manufactured gas, natural gas, or other gaseous fuels for direct flame heating, thus quickly heating cooking utensils. The components of a typical burner generally include the burner (comprising the burner head, gas distribution plate, and burner cap), control valve, igniter, and injector. The working process involves gas supplied by an external gas pipe or gas cylinder being delivered to the burner via the control valve and injector. The igniter then ignites the gas at the burner to generate heat.

[0003] A related technology discloses an air distribution plate, comprising: a lower air distribution plate having one or more first air intake zones; and an upper air distribution plate including air distribution channels located on different rings from the inside out, wherein some or all of the air distribution channels on non-adjacent rings connect to one or more first air intake zones. Each air distribution channel is provided with a corresponding air inlet.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] In related technologies, the air inlet is used to cooperate with the burner's injector tube, control valve, etc., to achieve air intake. When there are many air distribution channels in the air distribution plate, it results in a larger number of injector tubes or control valves that are matched with the air inlet. This leads to an increase in the size of the burner, which in turn increases the difficulty of burner installation. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a gas distribution plate, a burner, and a gas stove to reduce the size of the burner and improve the ease of burner installation.

[0008] According to a first aspect of the present invention, a gas distribution plate is provided, the gas distribution plate comprising: a lower gas distribution plate defining a plurality of gas distribution channels, the plurality of gas distribution channels being arranged sequentially from the inside to the outside; the lower gas distribution plate having an air inlet connected to the gas distribution channels, so that air-fuel gas flows into the gas distribution channels through the air inlet; wherein at least two adjacent gas distribution channels share one air inlet.

[0009] According to a second aspect of the present invention, a burner is provided, comprising: a gas distribution plate as described in the above embodiments; and ejector tubes connected to air inlets, wherein the number of ejector tubes is the same as the number of air inlets and corresponds one-to-one.

[0010] According to a third aspect of the present invention, a gas stove is provided, including the burner of the above embodiment.

[0011] The gas distribution plate, burner, and gas stove provided in this disclosure can achieve the following technical effects:

[0012] The lower gas distribution plate defines multiple gas distribution channels, allowing the gas flowing in through the inlet to be distributed into different channels, thus providing gas to the burner cap corresponding to each channel. At least two adjacent gas distribution channels share a single inlet, meaning that gas flowing in through one inlet can simultaneously flow into at least two channels. Because the number of inlets is reduced, the number of corresponding injectors and control valves can also be reduced. Therefore, the burner of this embodiment can be smaller in size compared to burners with the same ring flame, thereby facilitating burner installation and improving installation convenience.

[0013] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0014] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0015] Figure 1 This is a schematic diagram of the structure of a burner provided in an embodiment of this disclosure;

[0016] Figure 2 This is a schematic diagram of the exploded structure of a gas distribution plate provided in an embodiment of this disclosure;

[0017] Figure 3 This is a schematic diagram of a gas distribution plate assembly structure provided in an embodiment of this disclosure;

[0018] Figure 4 This is a schematic diagram of the structure of a lower gas distribution plate provided in an embodiment of this disclosure;

[0019] Figure 5 This is a structural schematic diagram from one perspective of a flame cap (center flame cap) provided in an embodiment of this disclosure;

[0020] Figure 6 This is a structural schematic diagram from another perspective of a flame cap (center flame cap) provided in an embodiment of this disclosure;

[0021] Figure 7 This is a structural schematic diagram from another perspective of a flame cap (center flame cap) provided in an embodiment of this disclosure;

[0022] Figure 8 This is a structural schematic diagram from another perspective of a flame cap (center flame cap) provided in an embodiment of this disclosure;

[0023] Figure 9 yes Figure 8 A magnified structural diagram of part A in the middle;

[0024] Figure 10 This is a cross-sectional structural schematic diagram of a flame cap assembly provided in an embodiment of this disclosure;

[0025] Figure 11 This is a schematic diagram of another flame cap (outer flame cap) provided in an embodiment of this disclosure;

[0026] Figure 12 This is a schematic diagram of the structure of a stove head provided in an embodiment of this disclosure;

[0027] Figure 13 This is a schematic diagram of the structure of an inner flame cap provided in an embodiment of this disclosure;

[0028] Figure 14 This is a cross-sectional structural schematic diagram of a flame cap (center flame cap) provided in an embodiment of this disclosure;

[0029] Figure 15 This is a cross-sectional structural schematic diagram of another flame cap (outer flame cap) provided in an embodiment of this disclosure;

[0030] Figure 16 This is another cross-sectional structural schematic diagram of a flame cap (center flame cap) provided in an embodiment of this disclosure;

[0031] Figure 17 This is a cross-sectional structural schematic diagram of a burner provided in an embodiment of this disclosure;

[0032] Figure 18 This is a cross-sectional structural diagram of a burner provided in an embodiment of this disclosure.

[0033] Figure label:

[0034] 10. Air distributor plate; 101. Lower air distributor plate; 102. Air distribution channel; 1021. First air distribution channel; 1022. Second air distribution channel; 1023. Bottom wall of the second air distribution channel; 1024. Third air distribution channel; 1025. Bottom wall of the third air distribution channel; 103. Air inlet; 1031. First air inlet; 1032. Second air inlet; 104. Air intake channel; 105. Secondary air channel; 1051. First and second secondary air channels; 1052. Second and second secondary air channels; 106. Upper air distributor plate; 1061. Air outlet channel; 1062. Air outlet; 1063. Grille; 107. Connecting part; 1071. First screw hole; 1072. Second screw hole; 20. Outer flame cap; 201. Outer ring mixing chamber; 2011, outer ring outer flame port; 2012, outer ring inner flame port; 2013, outer ring outer flame stabilizer groove; 2014, outer ring inner flame stabilizer groove; 202, second flame transfer groove; 2021, third flame transfer port; 2022, fourth flame transfer port; 2023, second flow equalization hole; 203, second inner sidewall; 204, second outer sidewall; 205, second top wall; 30, middle flame cap; 301, middle ring mixing chamber; 3011, middle ring inner flame port; 3012, middle ring outer flame port; 3013, middle ring flame stabilizer groove; 302, first flame transfer groove; 3021, first flame transfer port; 3022, second flame transfer port; 303, first inner sidewall; 304, first outer sidewall; 305, first top wall; 40, inner flame cap; 401, inner mixing chamber. Chamber; 402, Inner flame port; 403, Nose-shaped protrusion; 404, Groove; 4041, Thermocouple port; 405, Thermocouple; 406, Inner ring flame stabilizer groove; 50, Flame cap; 501, Mixing chamber; 5011, Outer flame port; 5012, Inner flame port; 5013, Flame port group; 5014, Main flame port; 5015, Flame stabilizer hole; 50151, First flame outlet hole; 50152, Second flame outlet hole; 5016, Flame stabilizer groove; 502, Flame cap body; 5021, Inner wall; 5022, Outer wall; 5023, Top wall; 5024, Groove portion; 5025, Protrusion portion; 5026, Clearance passage; 503, Connecting rib; 504, Reinforcing rib; 5041, First reinforcing rib; 5042, Second reinforcing rib; 505, Connecting part; 5051, Third screw hole; 506, Protrusion; 507, First burner cap; 5071, First burner hole; 5072, Third burner hole; 508, Second burner cap; 5081, Second burner hole; 5082, Fourth burner hole; 509, Third burner cap; 5091, Fifth burner hole; 60, Ignition needle; 601, Ignition cap; 602, Ignition hole; 603, Second clearance groove; 70, Secondary air flow channel; 701, First and Secondary air flow channels; 702, Second and Secondary air flow channels; 703, Gas flow channel; 80, Burner head; 801, First side wall; 802, Second side wall; 803, First clearance groove; 804, Outer ring mixing chamber; 805, Inner ring mixing chamber; 90, Injector tube; 100, Burner. Detailed Implementation

[0035] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0036] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0037] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0038] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0039] Unless otherwise stated, the term "multiple" means two or more.

[0040] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0042] Appendix Figure 17 The thick arrows indicate the flow direction of the gas in the second gas distribution channel 1022 and the third gas distribution channel 1024, while the thin arrows indicate the flow direction of the gas in the first gas distribution channel 1021. Figure 18 The middle arrow indicates the direction of airflow within the secondary airflow channel 70.

[0043] Combination Figures 1 to 18 As shown, this embodiment of the present disclosure provides a burner 100, which includes a burner cap 50, a gas distribution plate 10, a burner head 80, an injector tube 90, and an air damper plate. One optional assembly method involves the gas distribution plate 10 being positioned between the burner head 80 and the burner cap 50, with the other end of the burner head 80 connected to the injector tube 90. The burner head 80 guides the gas flowing from the injector tube 90, or a mixture of gas and primary air (hereinafter collectively referred to as gas), to the gas distribution plate 10. The gas distribution plate 10 then divides the gas flow from the burner head 80 and transmits it to the corresponding burner cap 50, whereby the gas is ignited at the flame holes of the burner cap 50 to form a flame.

[0044] The number of flame covers 50 is two or more, each flame cover 50 is annular, and different flame covers 50 are arranged concentrically and nested sequentially from the inside to the outside. Each flame cover 50 is provided with flame holes, and multiple flame holes are arranged sequentially and spaced apart along the circumference of the corresponding flame cover 50. This allows the multiple flame holes of each flame cover 50 to form annular flames. Each annular flame can heat the pot or other container at the corresponding ring position. Having two or more flame covers 50 can increase the heating area and heating uniformity of the pot or other container above the flame cover 50.

[0045] Optionally, each of the burner caps 50 can define a mixing chamber 501, which extends in a ring along the circumference of the burner cap 50. The mixing chamber 501 of each burner cap 50 can communicate with the flame hole of that burner cap 50. The mixing chamber 501 is connected to the gas distribution plate 10. The gas that is distributed by the gas distribution plate 10 can flow into the mixing chamber 501 and then be ejected from the flame hole connected to the mixing chamber 501, and then burn at the flame hole to form a ring flame.

[0046] In some alternative embodiments, such as Figure 1 As shown, there are three flame covers 50, comprising an inner flame cover 40, a middle flame cover 30, and an outer flame cover 20 arranged sequentially from the inside out. In some alternative embodiments, the number of flame covers 50 may also be two, such as an inner flame cover 40 and an outer flame cover 20 arranged sequentially from the inside out. It should be noted that the number of flame covers 50 may also be other than the stated number.

[0047] Optionally, the gas distribution plate 10 defines gas flow channels 703. After the gas enters the gas distribution plate 10 through the burner head 80, it can flow to the corresponding burner cap 50 through multiple gas flow channels 703. The burner head 80 has multiple independent annular mixing chambers, which are concentrically arranged and nested from the inside to the outside. Each annular mixing chamber is connected to one or more gas flow channels 703 of the gas distribution plate 10. That is, the presence or absence of gas supply in each annular mixing chamber in the burner head 80 can determine whether there is gas supply in the one or more corresponding gas flow channels 703, thereby affecting whether the burner cap corresponding to each gas flow channel 703 can form a flame.

[0048] like Figure 2 As shown, this embodiment of the present disclosure provides a gas distribution plate 10, which includes a lower gas distribution plate 101. The lower gas distribution plate 101 defines a plurality of gas distribution channels 102, and the gas flow channel 703 includes the gas distribution channels 102. The plurality of gas distribution channels 102 are arranged sequentially from the inside to the outside. The lower gas distribution plate 101 has an air inlet 103, which connects the burner head 80 and the gas distribution channels 102, so that the gas in the burner head 80 flows into the gas distribution channels 102 through the air inlet 103. At least two gas distribution channels 102 share a single air inlet 103.

[0049] In this optional embodiment, the gas distribution plate 10 and gas distribution channels 102 are used to divert the gas flowing in from the burner head 80 to supply gas to different burner caps 50. At least two gas distribution channels 102 share a common air inlet 103, meaning that gas flowing in through one air inlet 103 can flow to different gas distribution channels 102. This reduces the number of air inlets 103 compared to a burner 100 with a single ring flame, thus reducing the number of components such as the injector 90 and control valve that cooperate with the gas distribution plate 10. Ultimately, this also reduces the size of the burner 100 and facilitates its installation.

[0050] Optionally, the plurality of gas distribution channels 102 include a second gas distribution channel 1022 and a third gas distribution channel 1024. Both the second gas distribution channel 1022 and the third gas distribution channel 1024 are annular and extend circumferentially along the lower gas distribution plate 101. The third gas distribution channel 1024 is sleeved on the outside of the second gas distribution channel 1022.

[0051] In this embodiment, the annular cavity facilitates the flow of gas along the circumference of the gas distribution plate 10, thereby providing gas to the burner cap 50 from the circumference and improving the uniformity of combustion of the burner cap 50 in the circumference.

[0052] The lower gas distributor 101 further defines an intake passage 104, which extends radially along the lower gas distributor 101 and connects the second gas distribution passage 1022 and the third gas distribution passage 1024. The intake port 103 includes a first intake port 1031, which is located at one end of the intake passage 104, so that the fuel gas flows into the intake passage 104 through the first intake port 1031 and then flows to the second gas distribution passage 1022 and the third gas distribution passage 1024 respectively.

[0053] In this optional embodiment, the second gas distribution channel 1022 and the third gas distribution channel 1024 are annular and sequentially nested from the inside out. The intake channel 104 extends radially along the lower gas distribution plate 101, meaning that the intake channel 104 extends outward from the center (or near the center) or from the outer circumference to the center (or near the center). This enables the connection between the second gas distribution channel 1022 and the third gas distribution channel 1024, allowing the fuel gas to flow into the intake channel 104 through the first intake port 1031, and then flow into the second gas distribution channel 1022 and the third gas distribution channel 1024 respectively.

[0054] Optionally, each air intake channel 104 corresponds to an air inlet 103, so that each air intake channel 104 can be connected to the annular mixing chamber of the burner head 80 through the air inlet 103. The gas enters the air intake channel 104 through the air inlet 103. The air intake channel 104 is connected to at least two adjacent gas distribution channels 102, so that gas can flow in each gas distribution channel 102.

[0055] Optionally, the first air inlet 1031 can be located at one end of the air intake channel 104 near the second gas distribution channel 1022, that is, the first air inlet 1031 is located at the inner end of the air intake channel 104. With this configuration, since the outer diameter of the burner head 80 is generally smaller than the outer diameter of the gas distribution plate 10, the location of the first air inlet 1031 at the inner end of the air intake channel 104 facilitates the flow of air from the burner head 80 into the gas distribution channel 102, without the need to increase the size of the burner head 80 or other gas pipelines.

[0056] It should be noted that the first air inlet 1031 can also be located at one end of the air intake channel 104 near the third air distribution channel 1024, that is, the first air inlet 1031 is located at the outer end of the air intake channel 104. The gas flows from the outer circumference to the center, which shortens the flow distance of the gas from the air inlet 103 to the outer circumference. Since the outer circumference requires a larger amount of gas, the pressure loss of the gas flowing within the air intake channel 104 can be reduced.

[0057] Optionally, the first gas distribution channel 1021 and the second gas distribution channel 1022 are arranged adjacent to each other so that the gas in the intake channel 104 can flow into the first gas distribution channel 1021 and the second gas distribution channel 1022 simultaneously, reducing the resistance to gas flow. This reduces the length of the intake channel 104, simplifies manufacturing, and prevents gas from flowing into other gas distribution channels 102. Furthermore, it facilitates gas distribution and avoids excessive gas branching, which could lead to significant gas flow losses.

[0058] Optionally, the outlet of the gas distribution channel 102 is connected to the mixing chamber 501 of the burner cap 50. That is, the gas can flow through the gas distribution channel 102 into the mixing chamber 501 and then flow out from the burner hole of the burner cap 50 to achieve combustion in the burner cap 50. The number of gas distribution channels 102 is the same as the number of burner caps 50, and the annular position of the gas distribution channels 102 corresponds to the annular position of the burner caps 50 to ensure that the gas in each gas distribution channel 102 can be delivered to the corresponding burner cap 50.

[0059] Optionally, the burner cap 50 is provided with an inner burner hole 5012 and an outer burner hole 5011 that are connected to the mixing chamber 501. The outer burner hole 5011 is located outside the inner burner hole 5012.

[0060] In this embodiment, the inner flame hole 5012 and the outer flame hole 5011 are located on two different rings, enabling the flame cap 50 to form a two-ring annular flame. This improves the combustion uniformity of the flame cap 50. Compared to a flame cap 50 with flame holes on only one side, the flame cap 50 in this embodiment has a larger and more uniform heating area, thereby improving the heating effect of the flame cap 50 on cookware and other utensils. For example, the flame cap 50 includes multiple flame caps 50, such as an inner flame cap 40, an outer flame cap 20, and a middle flame cap 30. Each flame cap 50 has flame holes on both inner and outer rings, enabling uniform heating over a large area. The three flame caps 50 can achieve heating within a diameter range of 130mm-150mm.

[0061] In addition, one mixing chamber 501 is connected to one gas distribution channel 102, and one mixing chamber 501 is connected to at least two ring-shaped burner holes. That is to say, in this embodiment, one gas distribution channel 102 can simultaneously supply gas to two ring-shaped burner holes, and one mixing chamber 501 can also simultaneously supply gas to two ring-shaped burner holes. When there are three burner caps 50, the gas distribution plate 10 and the burner caps 50 in this embodiment can achieve a three-ring burner cap and five-ring flame configuration through the dual air inlets.

[0062] The distance between the first air distribution channel 1021 and the second air distribution channel 1022 along the radial direction of the lower air distribution plate 101 can be determined based on the distance between the corresponding burner caps 50 of the first air distribution channel 1021 and the second air distribution channel 1022. Therefore, the length of the intake channel 104 along the radial direction of the lower air distribution plate 101 is also determined by the distance between the corresponding burner caps 50 of the first air distribution channel 1021 and the second air distribution channel 1022.

[0063] Optionally, the bottom wall 1023 of the second air distribution channel is at least partially inclined upward along the flow direction of the airflow within the second air distribution channel 1022.

[0064] In this embodiment, the bottom wall 1023 of the second gas distribution channel is at least partially inclined upward, which can reduce the resistance to the flow of gas in the second gas distribution channel 1022, so as to facilitate the circumferential flow of gas along the second gas distribution channel 1022.

[0065] Optionally, the bottom wall at the connection between the second gas distribution channel 1022 and the intake channel 104 is inclined upward along the direction of airflow to reduce the resistance of the gas flow from the intake channel 104 to the second gas distribution channel 1022 and improve the smoothness of gas flow.

[0066] Similarly, along the flow direction of the airflow within the third air distribution channel 1024, the bottom wall 1025 of the third air distribution channel is at least partially inclined upwards.

[0067] In this embodiment, the bottom wall 1025 of the third gas distribution channel is at least partially inclined upward, which can reduce the resistance to the flow of gas in the third gas distribution channel 1024, so as to facilitate the circumferential flow of gas along the third gas distribution channel 1024.

[0068] Optionally, the bottom wall at the connection between the third gas distribution channel 1024 and the intake channel 104 is inclined upward along the direction of airflow to reduce the resistance of the gas flow from the intake channel 104 to the third gas distribution channel 1024 and improve the smoothness of gas flow.

[0069] In some alternative embodiments, the lower air distribution plate 101 is configured as a disc-shaped semi-enclosed housing that is adapted to both the annular mixing chamber and the burner cap 50, and the air distribution channel 102, the air intake channel 104 and the air intake port 103 are all formed in the housing.

[0070] Optionally, there are multiple air intake channels 104, which are arranged sequentially and at intervals along the circumference of the lower air distribution plate 101. Among them, the first air intake 1031 includes multiple sub-air intakes 103, which are arranged sequentially and at intervals along the circumference of the lower air distribution plate 101. The number of sub-air intakes 103 is the same as the number of air intake channels 104 and corresponds one-to-one.

[0071] In this embodiment, multiple air intake channels 104 are arranged sequentially at intervals along the circumference of the lower air distribution plate 101, meaning that each air distribution channel 102 corresponds to multiple air intake channels 104. The multiple air intake channels 104 increase the circumferential air supply to the air distribution channel 102, making the gas flow more uniformly in the circumferential direction within each air distribution channel 102.

[0072] There are multiple air intake channels 104, and correspondingly, the first air intake 1031 is also divided into multiple sub-air intakes 103. The multiple sub-air intakes 103 are on the same circumference to ensure that gas can flow into each air supply channel through the sub-air intake 103.

[0073] like Figure 4 As shown, the plurality of air distribution channels 102 also include a first air distribution channel 1021, and a second air distribution channel 1022 sleeved on the outside of the first air distribution channel 1021. The first air distribution channel 1021 is located at the center of the lower air distribution plate 101 and penetrates the lower air distribution plate 101 along the thickness direction of the lower air distribution plate 101. The air inlet 103 also includes a second air inlet 1032, which is connected to the first air distribution channel 1021.

[0074] In this embodiment, the first gas distribution channel 1021 is located at the center of the lower gas distribution plate 101. The first gas distribution channel 1021 is used to connect with the inner flame cover 40 in the flame cover 50 to realize the ignition of the inner flame cover 40. The first gas distribution channel 1021 can be directly connected to the inner ring mixing chamber 805 of the burner head 80 to realize the combustion of the inner flame cover 40.

[0075] Optionally, the inner burner cap 40 corresponds to the first gas distribution channel 1021, the middle burner cap 30 corresponds to the second gas distribution channel 1022, and the outer burner cap 20 corresponds to the third gas distribution channel 1024. The gas flowing into the first air inlet 1031 flows to the second gas distribution channel 1022 and the third gas distribution channel 1024 respectively, supplying gas to the outer burner cap 20 and the middle burner cap 30. The gas from the second air inlet 1032 flows through the first gas distribution channel 1021 to the inner burner cap 40, supplying gas to the inner burner cap 40.

[0076] Optionally, the air distribution plate 10 and the burner cap 50 together define a secondary air flow channel 70, which communicates with the burner holes of the burner cap 50 to provide secondary air to the burner holes. The lower air distribution plate 101 defines a secondary air passage 105, which is included in the secondary air flow channel 70 and is located between two adjacent air distribution channels 102. The secondary air passage 105 and the intake passage 104 are arranged alternately along the circumference of the lower air distribution plate 101.

[0077] In this embodiment, the secondary air passage 105 is used to supply secondary air to the burner cap 50 to replenish the flame at the burner cap 50, thereby ensuring the stability and completeness of combustion at the burner cap 50. The secondary air passage 105 is located between two adjacent gas distribution passages 102, so that secondary air can flow between the two burner caps 50 corresponding to the two gas distribution passages 102, and can simultaneously replenish air to the two burner caps 50. The secondary air passage 105 and the intake passage 104 are arranged sequentially and at intervals along the circumference of the lower gas distribution plate 101. This arrangement ensures that the secondary air passage 105 and the intake passage 104 do not interfere with each other, ensuring the flow of secondary air and fuel gas, and also ensuring the supply of secondary air and fuel gas in the circumference of the burner cap 50.

[0078] Optionally, the secondary air passage 105 includes a first secondary air passage 1051 and a second secondary air passage 1052. The first secondary air passage 1051 is located between the second air distribution passage 1022 and the third air distribution passage 1024, and is used to provide secondary air to the two burner caps 50 corresponding to the second air distribution passage 1022 and the third air distribution passage 1024. The second secondary air passage 1052 is located between the second air distribution passage 1022 and the first air distribution passage 1021, and is used to provide secondary air to the two burner caps 50 corresponding to the first air distribution passage 1021 and the second air distribution passage 1022.

[0079] Taking the inner burner cap 40 corresponding to the first gas distribution channel 1021, the middle burner cap 30 corresponding to the second gas distribution channel 1022, and the outer burner cap 20 corresponding to the third gas distribution channel 1024 as an example, the inner burner cap 40, the middle burner cap 30, and the outer burner cap 20 are mounted on the gas distribution plate 10, and the middle burner cap 30, the outer burner cap 20, and the gas distribution plate 10 together define the first and second secondary air flow channels 701. The first and second secondary air flow channels 701 include the first and second secondary air passages 1051, which can provide secondary air to the middle burner cap 30 and the outer burner cap 20. The inner burner cap 40, the middle burner cap 30, and the gas distribution plate 10 together enclose the second and second secondary air flow channels 702, which include the second and second secondary air passages 1052, which can provide secondary air to the middle burner cap 30 and the inner burner cap 40.

[0080] Optionally, the lower air distribution plate 101 includes a plate body and multiple components, including multiple annular components. The multiple annular components are concentrically arranged at the center of the plate body to form multiple air inlets 103 nested in sequence.

[0081] In one specific embodiment, such as Figure 4As shown, the first air inlet 1031 is sleeved on the outside of the second air inlet 1032. The second air inlet 1032 is connected to the inner ring mixing chamber 805 of the burner head 80, and the second air inlet 1032 is connected to the outer ring mixing chamber 804 of the burner head 80.

[0082] Optionally, the secondary air channel 105 extends upward from the bottom of the lower air distribution plate 101, meaning that the secondary air channel 105 protrudes from the plate body. In this way, while the secondary air channel 105 is being formed, the air distribution channel 102 can be separated and formed.

[0083] Optionally, the secondary air passage 105 has a structure that gradually narrows from the outside to the inside. For example, the secondary air passage 105 has a concave structure in the shape of a trumpet or a cone. This can maximize the airflow in the secondary air passage 105. At the same time, it ensures the circumferential length of the gas distribution passage 102 to avoid mutual interference of combustion gases in different gas distribution passages 102.

[0084] Optionally, along the circumference of the lower air distribution plate 101, the width of the intake channel 104 is smaller than the width of the secondary air channel 105, so as to ensure the length of the air distribution channel 102 in the circumference of the lower air distribution plate 101.

[0085] In some optional embodiments, the gas distribution plate 10 further includes an upper gas distribution plate, which covers the lower gas distribution plate 101 and together with the lower gas distribution plate 101 defines the gas flow channel 703. The upper gas distribution plate has an exhaust channel 1061 and an air outlet 1062. The burner cap 50 covers the upper gas distribution plate and is connected to the exhaust channel 1061. The gas flows through the exhaust channel 1061 into the burner cap 50, realizing combustion in the burner cap 50. The gas flow channel 703 includes a gas distribution channel 102 and an exhaust channel 1061, and the secondary air flow channel 70 includes a secondary air channel 105 and an air outlet 1062.

[0086] Optionally, such as Figure 2 and Figure 3 As shown, the upper air distribution plate includes an upper air distribution plate 106, which is sheet-shaped and covers the lower air distribution plate 101. The upper air distribution plate 106 has an air outlet channel 1061 that communicates with the air distribution channel 102. The number of air outlet channels 1061 and the number of air distribution channels 102 are the same and correspond one-to-one.

[0087] In this embodiment, the upper air distribution plate is in the form of an air distribution plate, which can reduce the height of the entire air distribution plate 10. At the same time, this makes the structure of the air distribution plate 10 simple and reduces the cost.

[0088] Optionally, the upper air distribution plate 106 may also include a grille 1063, which is disposed at at least one air outlet passage 1061 to guide the airflow out of the air distribution passage 102.

[0089] In this embodiment, the grille 1063 is used to divert the airflow that flows through the gas outlet channel 1061 to the burner cap 50, so as to improve the uniformity of the gas flowing to the burner cap 50.

[0090] Optionally, the grille 1063 is matched with the air outlet channel 1061, that is, the grille 1063 and the air outlet channel 1061 are the same or similar in shape and size, so as to improve the airflow diversion effect of the grille 1063.

[0091] Optionally, the grille 1063 is provided with grille holes, which are evenly arranged along the circumference of the upper gas distributor 106 to further improve the uniformity of gas flow.

[0092] Optionally, the upper air distribution plate 106 also has an air outlet 1062, which is connected to the secondary air channel 105. The number of air outlets 1062 and the number of secondary air channels 105 are the same and correspond one-to-one. The air outlets 1062 of the upper air distribution plate 106 avoid the secondary air within the secondary air channel 105. The secondary air can flow from the secondary air channel 105 to the air outlet 1062, and then from the air outlet 1062 to the corresponding burner caps 50. Optionally, the air outlet 1062 matches its corresponding secondary air channel 105, for example, in terms of shape and size, to ensure the flow rate of the secondary air.

[0093] Optionally, the upper gas distributor 106 and the lower gas distributor 101 are sealed together to prevent gas leakage in the gas flow channel 703. The upper gas distributor 106 and the lower gas distributor 101 are detachably connected to facilitate cleaning, maintenance, and replacement of the upper gas distributor 106 and the lower gas distributor 101.

[0094] Specifically, the upper air distributor 106 and the lower air distributor plate 101 are connected by screws. Optionally, the lower air distributor plate 101 is provided with a first screw hole 1071, and the upper air distributor 106 is provided with a second screw hole 1072. The screw passes through the first screw hole 1071 and the second screw hole 1072 to realize the connection between the upper air distributor 106 and the lower air distributor plate 101.

[0095] Optionally, the first screw hole 1071 is located within the air distribution channel 102. Specifically, there are multiple first screw holes 1071, which are sequentially spaced along the circumference of the lower air distribution plate 101. Optionally, the first screw hole 1071 can be located within the second air distribution channel 1022 and / or the third air distribution channel 1024. As shown in the figure, the first screw holes 1071 in the second air distribution channel 1022 and the first screw holes 1071 in the third air distribution channel 1024 are staggered to increase the connection stability between the lower air distribution plate 101 and the upper air distribution plate 106.

[0096] Optionally, the intake passage 104 divides the second air distribution passage 1022 into multiple sub-second air distribution passages spaced circumferentially along the lower air distribution plate 101. Each sub-second air distribution passage is provided with a first screw hole 1071. The bottom walls of the air distribution passages 102 on both sides of the first screw hole 1071 are inclined upward along the airflow direction. That is, the screw hole is located at the highest point of the bottom wall of the sub-second air distribution passage. This not only reduces the resistance to gas flow, but also reduces the distance between the first screw hole 1071 and the second screw hole 1072, facilitating the connection between the first screw hole 1071 and the second screw hole 1072.

[0097] Optionally, the first screw hole 1071 in the third gas distribution channel 1024 is located at the connection between the intake channel 104 and the third gas distribution channel 1024. This allows the first screw hole 1071 to forcefully divert the gas flowing from the intake channel 104, enabling the gas to flow separately into the third gas distribution channels 1024 on both sides of the intake channel 104, thereby achieving circumferential flow of the gas. Optionally, the intake channel 104 also divides the third gas distribution channel 1024 into multiple sub-third gas distribution channels spaced circumferentially along the lower gas distribution plate 101.

[0098] Optionally, the thickness of the upper air distributor 106 can range from 1mm to 3mm. For example, the thickness of the upper air distributor 106 can be 1mm, 1.5mm, 2mm, 3mm, etc. If the thickness of the upper air distributor 106 is less than 1mm, the upper air distributor 106 has lower strength and is easily damaged. If the thickness of the upper air distributor 106 is greater than 3mm, the upper air distributor 106 is too thick, which can easily lead to waste, and the effect of reducing the overall height of the air distributor 10 is not obvious.

[0099] Optionally, the upper air separator 106 is made of a metal such as stainless steel.

[0100] Alternatively, the upper air distribution plate 106 and the lower air distribution plate 101 can be connected by welding or integral molding.

[0101] Optionally, the connection surfaces of the upper air distribution plate 106 and the lower air distribution disc 101 are planar to improve the sealing of the connection.

[0102] In one specific embodiment, the burner cap 50 is mounted on the upper gas distribution plate. Taking the burner cap 50 as including an inner burner cap 40, a middle burner cap 30, and an outer burner cap 20 as an example, the gas flow channel 703 includes a first gas flow channel, a second gas flow channel, and a third gas flow channel. The first gas flow channel includes a first gas distribution channel 1021 and a corresponding gas outlet channel 1061. The second gas flow channel includes a second gas distribution channel 1022 and a corresponding gas outlet channel 1061. The third gas flow channel includes a third gas distribution channel 1024 and a corresponding gas outlet channel 1061. The inner burner cap 40 is connected to the first gas flow channel, the middle burner cap 30 is connected to the second gas flow channel, and the outer burner cap 20 is connected to the third gas flow channel.

[0103] In another specific embodiment, the burner cap 50 is mounted on the lower gas distribution plate 101, and the burner cap 50 can be directly mounted on the gas distribution channel 102, meaning that the burner cap 50 and the gas distribution channel 102 together define the gas flow path 703. The lower gas distribution plate 101 has an upper sidewall in the gas distribution channel 102 located between adjacent burner caps 50 to prevent gas leakage. This reduces the need for an upper gas distribution plate, further reducing the height of the gas distribution plate 10, and also reducing the cost of the gas distribution plate 10.

[0104] Optionally, the burner 100 also includes an ejector tube 90, which is connected to the air inlet 103, and the number of ejector tubes 90 and air inlets 103 are the same and correspond one-to-one.

[0105] In this embodiment, the ejector tube 90 is used to supply gas to the air intake passage 104. Compared with the burner 100 with equivalent ring flame in the related art, the number of air intake ports 103 in this embodiment is reduced, and the number of ejector tubes 90 can also be reduced. This reduces the number of ejector tubes 90, thereby reducing the size of the burner 100 and facilitating its installation.

[0106] In some embodiments, the ejector tube 90 can be directly connected to the air inlet 103. For example, when the first air inlet 1031 is located at the outer end of the air inlet channel 104, if the first air inlet 1031 and the second air inlet 1032 are still connected in a nested manner, the air inlet 103 may not correspond to the annular mixing chamber of the burner head 80. In this case, the ejector tube 90 is directly connected to the first air inlet 1031, which facilitates the inflow of gas.

[0107] Optionally, the air inlet 103 is configured to match the diameter of the gas outlet of the ejector tube 90.

[0108] In other embodiments, the ejector tube 90 can be connected to the air inlet 103 through the annular mixing chamber of the burner head 80. That is, the air inlet 103 is connected to the outlet of the annular mixing chamber, and the air inlet 103 is adapted to the outlet of the annular mixing chamber. For example, when the first air inlet 1031 is sleeved outside the second air inlet 1032, the first air inlet 1031 is connected to the outer annular mixing chamber 804 of the burner head 80, and the second air inlet 1032 is connected to the inner annular mixing chamber 805 of the burner head 80. Through the two-ring burner head 80 and the gas distribution plate 10 of this application, the two-ring gas path is transformed into a three-ring gas path.

[0109] like Figure 12 As shown, the burner 100 also includes a thermocouple 405, which is used for flameout protection of the burner 100. The burner head 80 includes a first sidewall 801 and a second sidewall 802, with the second sidewall 802 located inside the first sidewall 801. The first sidewall 801 and the second sidewall 802 together define an outer annular mixing chamber 804. The outer wall surface of the first sidewall 801 is recessed to form a relief groove (hereinafter referred to as the first relief groove 803 for easy distinction), which is used to house the thermocouple 405.

[0110] The concave outer wall of the first sidewall 801 causes the thermocouple 405 to be positioned more inwards compared to its position in the prior art. This allows for a reduction in the diameter of the inner burner cap 40. A smaller diameter of the inner burner cap 40 reduces the minimum load on the inner ring flame (the annular flame at the inner burner cap 40), thus allowing for a further reduction in the minimum flame size, for example, to 200W. This increases the flame adjustment range of the gas stove, further reducing the minimum flame size of the inner ring flame. When using the lowest flame for heat preservation or simmering soup, the soup in the pot will not boil away quickly, improving the user's control over the inner ring flame and enhancing the user experience.

[0111] Optionally, a portion of the first sidewall 801 protrudes towards the second sidewall 802 to form a first clearance groove 803.

[0112] A portion of the first sidewall 801 protrudes towards the second sidewall 802 to form a first clearance groove 803 for placing the thermocouple 405. The other part of the first sidewall 801 remains unchanged. In this way, on the one hand, the strength of the first sidewall 801 is guaranteed, and on the other hand, the first clearance groove 803 does not occupy the outer ring gas path too much, thereby ensuring the smooth flow of gas in the outer ring gas path, so that the gas or the gas-air mixture can smoothly reach the outer ring flame (the ring flame of the outer flame cap 20) and / or the middle ring flame (the ring flame of the middle flame cap 30).

[0113] Optionally, the burner head 80 is sealed to the lower gas distribution plate 101, and the side wall of the outer ring mixing chamber 804 is sealed to the lower gas distribution plate 101 by a combination of end face sealing and radial sealing. The inner ring mixing chamber 805 and its corresponding side wall are sealed to the lower gas distribution plate 101 by end face sealing.

[0114] Optionally, the connection surface between the burner cap 50 and the upper wall of the gas distribution plate 10 is flat, and the burner cap 50 and the gas distribution plate 10 are sealed together to prevent gas leakage.

[0115] like Figure 5 As shown, this embodiment of the present disclosure also provides a flame cap 50, which includes a flame cap body 502 and a connecting rib 503. The flame cap body 502 defines a mixing chamber 501, which is connected to the gas outlet passage 1061 of the gas distribution plate 10. The connecting rib 503 is disposed on at least one side wall of the flame cap 50 and extends in a direction away from the mixing chamber 501. When the flame cap 50 is placed over the gas distribution plate 10, the connecting rib 503 can abut against the upper wall surface of the gas distribution plate 10.

[0116] In this embodiment, the gas flowing from the gas outlet channel 1061 of the gas distribution plate 10 flows into the mixing chamber 501 of the burner cap 50, and then flows out from the flame hole of the burner cap 50 to achieve flame combustion of the burner cap 50. The burner cap 50 is sealed to the gas distribution plate 10 to prevent gas leakage. The connecting rib 503 increases the contact area between the burner cap 50 and the upper wall of the gas distribution plate 10. On the other hand, the connecting rib 503 also increases the weight of the burner cap 50, allowing the burner cap 50 to be pressed tightly onto the gas distribution plate 10, ultimately improving the sealing effect between the burner cap 50 and the gas distribution plate 10.

[0117] The air distribution plate 10 includes an upper air distribution plate and a lower air distribution plate 101. The connecting rib 503 abuts against the upper wall surface of the air distribution plate 10, that is, the connecting rib 503 abuts against the upper wall surface of the upper air distribution plate. For example, when the upper air distribution plate includes an upper air distribution segment 106, the connecting rib 503 can abut against the upper air distribution segment 106.

[0118] Optionally, when the burner cap 50 is placed above the air distribution plate 10, the connecting rib 503 abuts against the upper wall of the air distribution plate 10 corresponding to the air intake channel 104.

[0119] In this embodiment, the gas distribution plate 10 defines the secondary air flow channel 70 and the gas flow channel 703, and the secondary air flow channels 70 are arranged alternately along the circumference of the gas distribution plate 10. The connecting rib 503 abuts against the upper wall surface of the gas distribution plate 10 corresponding to the gas flow channel 703, which increases the contact area between the burner cap 50 and the gas distribution plate 10. On the other hand, it can prevent the connecting rib 503 from blocking the airflow in the secondary air flow channel 70, so as to ensure that the secondary air can flow smoothly to the burner hole of the burner cap 50.

[0120] Optionally, the connecting rib 503 is adapted to the upper wall surface of the air distribution plate 10 corresponding to the air intake channel 104 so as to achieve the connection between the connecting rib 503 and the upper wall surface of the air distribution plate 10.

[0121] In this embodiment, the connecting rib 503 is adapted to the upper wall surface of the air distribution plate 10 corresponding to the air intake channel 104, meaning that the size and shape of the connecting rib 503 are the same as or similar to the upper wall surface of the air distribution plate 10 corresponding to the air intake channel 104. This further increases the contact area between the connecting rib 503 and the air distribution plate 10, enhancing the sealing effect of the burner cap 50. For example, if the upper wall surface of the air distribution plate 10 corresponding to the air intake channel 104 includes connected arc segments and straight segments, then the connecting rib 503 also includes arc segments and straight segments to achieve a sealed connection between the connecting rib 503 and the air distribution plate 10.

[0122] Optionally, the length of the connecting rib 503 along the circumference of the burner cap 50 is the same as or similar to the length of the intake passage 104 along the circumference of the burner cap 50, so as to increase the contact area between the connecting rib 503 and the air distribution plate 10 and improve the sealing effect between the connecting rib 503 and the air distribution plate 10.

[0123] Optionally, there may be multiple connecting ribs 503, which are arranged at intervals along the circumference of the fire cover 50.

[0124] In this embodiment, the arrangement of multiple connecting ribs 503 can further increase the connection area between the burner cap 50 and the air distribution plate 10, thereby improving the sealing effect. Optionally, the number of connecting ribs 503 is the same as the number of air intake channels 104 and corresponds one-to-one. This can increase the contact area between the burner cap 50 and the air distribution plate 10, and also prevent the connecting ribs 503 from interfering with the secondary airflow.

[0125] Optionally, along the radial direction of the flame cap 50, the width of the connecting rib 503 is less than half the width of the flame cap body 502.

[0126] In this embodiment, the radial width of the connecting rib 503 along the flame cover 50 is too small, so the sealing effect of the connecting rib 503 is not obvious. The radial width of the connecting rib 503 along the flame cover 50 is too large, so the weight of the flame cover 50 increases, thereby increasing the manufacturing cost of the flame cover 50.

[0127] Optionally, when the upper gas distribution plate includes the upper gas distribution plate 106, the lower end face of the connecting rib 503 and the lower end face of the burner cap body 502 are on the same plane, so that both the burner cap body 502 and the connecting rib 503 can abut against the upper wall surface of the upper gas distribution plate 106.

[0128] In this embodiment, the lower end face of the connecting rib 503 and the lower end face of the burner cap body 502 are located on the same plane. When the upper gas distributor 106 abuts against the burner cap body 502 and the connecting rib 503, the connecting surfaces of the connecting rib 503 and the upper gas distributor 106, as well as the connecting surfaces of the burner cap body 502 and the upper gas distributor 106, are all on the same plane. This increases the sealing between the burner cap 50 and the gas distributor 10, preventing gas leakage from between the burner cap 50 and the connecting rib 503.

[0129] Optionally, the connecting rib 503 can be provided on the inner side wall 5021 of the flame cover 50, or on the outer side wall 5022 of the flame cover 50. For example... Figure 1 As shown, when the flame cover 50 includes three flame covers 50, the connecting rib 503 is located on the middle flame cover 30 and on the side wall of the middle flame cover 30 facing the inner flame cover 40. The distance between the middle flame cover 30 and the inner flame cover 40 is relatively large. This arrangement of the connecting rib 503 provides ample space for its installation and facilitates the installation, disassembly, and removal of the middle flame cover 30. It can be understood that the connecting rib 503 could also be located on the side wall of the middle flame cover 30 facing the outer flame cover 20.

[0130] In some alternative embodiments, such as Figure 5 As shown, the multiple flame holes include a main flame hole 5014 and a flame stabilizer hole 5015, and the multiple flame holes include a flame hole group 5013. The flame cap 50 has a flame hole group 5013 that communicates with the mixing chamber 501. The flame hole group 5013 includes a main flame hole 5014 and multiple flame stabilizer holes 5015, and the multiple flame stabilizer holes 5015 wrap around the outside of the main flame hole 5014.

[0131] In this embodiment, multiple flame stabilizing holes 5015 surround the outside of a main flame hole 5014, allowing the flame stabilizing holes 5015 to stabilize the flame at the main flame hole 5014 from multiple directions. This prevents the flame at the main flame hole 5014 from escaping and also prevents the flame at the main flame hole 5014 from drifting away from the flame cap 50. The arrangement of the flame hole group 5013 can enhance the flame stabilizing effect at the main flame hole 5014 of the flame cap 50. Moreover, since the flame stabilizing holes 5015 surround the outside of the main flame hole 5014, the distance between adjacent main flame holes 5014 is increased, which can prevent adjacent main flame holes 5014 from competing for air, thereby reducing the smoke level during combustion in the main flame hole 5014.

[0132] Optionally, at least two of the multiple flame stabilizing holes 5015 are located on both sides of the main flame hole 5014.

[0133] In this embodiment, since the main flame hole 5014 is generally located near the top of the flame cap 50, at least two flame stabilizing holes 5015 are located on both sides of the main flame hole 5014, which facilitates the placement of the flame stabilizing holes 5015. Furthermore, the aforementioned at least two flame stabilizing holes 5015 can stabilize the flame of the main flame hole 5014 from both sides, ensuring the flame stabilization effect of the main flame hole 5014 and preventing uneven flame distribution.

[0134] Optionally, the height of the center of the flame stabilizer 5015 is less than the height of the center of the main flame hole 5014.

[0135] In this embodiment, the flame stabilizing hole 5015 can mainly stabilize the flame at the lower root of the main flame hole 5014 to prevent the flame in the middle and lower part of the main flame hole 5014 from leaving the flame.

[0136] Optionally, the height of the top of the flame stabilizing hole 5015 is lower than the height of the center of the main flame hole 5014. This allows part of the flame stabilizing hole 5015 to be located below the main flame hole 5014, which can further increase the flame stabilizing effect on the lower edge of the main flame hole 5014 and prevent the main flame hole 5014 from leaving the flame.

[0137] Optionally, the lowest point of the flame stabilizer 5015 is lower than the lowest point of the main flame hole 5014. This is to increase the flame stabilization effect at the lower edge root of the main flame hole 5014.

[0138] It should be noted that the flame stabilizing hole 5015 can also be located in the middle or upper part of the main flame hole 5014, which can stabilize the flame in the middle and upper part of the main flame hole 5014.

[0139] Optionally, the flow area of ​​the main flame hole 5014 is larger than the flow area of ​​the flame stabilizer hole 5015.

[0140] In this embodiment, the flame stabilizing hole 5015 surrounds both sides of the main flame hole 5014. The flow area of ​​the flame stabilizing hole 5015 is small, and the flame of the flame stabilizing hole 5015 is small. This can prevent the flame stabilizing hole 5015 and the flame of the main flame hole 5014 from competing for air, and further reduce the smoke from the flame.

[0141] Optionally, there may be multiple flame hole groups 5013, which are arranged sequentially at intervals along the circumference of the flame cover 50.

[0142] In this embodiment, the multiple flame hole groups 5013 are arranged at intervals, which can avoid competition for air among the multiple flame hole groups 5013 and further reduce the smoke during the combustion of the flame hole groups 5013.

[0143] Optionally, along the circumference of the flame cap 50, the distance between two adjacent flame hole groups 5013 is greater than the length of any one flame hole group 5013. A larger distance between adjacent flame hole groups 5013 avoids competition for air between them, further reducing smoke emissions.

[0144] Specifically, the number of flame hole groups 5013 can be 6-12, such as 6, 8, 10, or 12 groups. When the number of flame hole groups 5013 is less than 6, the burner cap 50 is not easy to form a ring flame, resulting in uneven flame and affecting the heating effect on cookware and other utensils. When the number of flame hole groups 5013 is more than 12, the distance between adjacent flame hole groups 5013 is too close, which can easily cause mutual interference and competition for air, resulting in more smoke. It should be noted that the number of flame hole groups 5013 can be set according to the circumference of the burner cap 50. Any arrangement that can achieve a ring flame on the burner cap 50 and has the effect of the flame hole groups 5013 of this application is an optional embodiment of this application.

[0145] Optionally, the main flame hole 5014 is inclined upwards along the direction of airflow; and / or, the flame stabilizing hole 5015 is inclined upwards along the direction of airflow flow.

[0146] In this embodiment, both the main flame hole 5014 and the flame stabilizer hole 5015 are inclined upward along the airflow direction, which can improve the heating effect on the cookware and increase the entrainment effect of secondary air at the main flame hole 5014 and / or the flame stabilizer hole 5015, thereby increasing the supply of secondary air to ensure the complete combustion of the flame at the main flame hole 5014 and / or the flame stabilizer hole 5015.

[0147] Optionally, such as Figure 1 As shown, the fire hole group 5013 is at least partially located within the secondary air flow channel 70.

[0148] In this embodiment, the flame hole assembly 5013 is at least partially located in and connected to the secondary air flow channel 70, which improves the smoothness of secondary air reaching the flame hole assembly 5013, thereby ensuring complete combustion of the flame and reducing smoke. Figure 1 As shown, one or two of the fire holes in the fire hole group 5013 are located within the secondary air flow channel 702.

[0149] Optionally, such as Figure 5 and Figure 6As shown, the flame cap 50 includes an inner wall 5021, an outer wall 5022, and a top wall 5023. The inner wall 5021 is annular; the outer wall 5022 is annular and is located outside the inner wall 5021; the top wall 5023 is annular and is connected between the upper end of the inner wall 5021 and the upper end of the outer wall 5022. The top wall 5023, the inner wall 5021, and the outer wall 5022 together enclose the mixing chamber 501. The outer wall 5022 is provided with an outer flame hole 5011 that communicates with the mixing chamber 501, and the flame hole group 5013 is provided on the inner wall 5021.

[0150] In this embodiment, the flame hole assembly 5013 is located on the inner wall 5021 of the flame cap 50, meaning that the inner wall 5021 of the flame cap 50 can form a ring-shaped flame. A ring-shaped flame is also formed on the outer wall 5022. This increases the flame range of the flame cap 50, eliminating dead zones and making the flame more uniform, suitable for cooking pancakes, steaks, etc. It should be noted that the outer wall 5022 may not have external flame holes; the flame cap 50 can have the flame hole assembly 5013 on the inner wall 5021, enabling combustion of the flame cap 50 and reducing smoke from the flame.

[0151] When there are three flame covers 50, the middle flame cover 30 is provided with a flame hole group 5013. For example, the inner wall 5021 of the middle flame cover 30 is provided with a flame hole group 5013 to increase the flame area of ​​the three flame covers 50 and improve the heating effect and heating uniformity of the flame covers 50. It can be understood that the outer flame cover 20 can also be provided with a flame hole group 5013, which can be provided on the inner wall 5021 and the outer wall 5022 of the outer flame cover 20.

[0152] Optionally, such as Figure 1As shown, when there are three flame caps 50, the three flame caps 50 include an inner flame cap 40, a middle flame cap 30, and an outer flame cap 20 arranged sequentially from the inside to the outside. The inner flame cap 40 defines an inner mixing chamber 401, and the side wall of the inner flame cap 40 has an inner flame hole 402 that communicates with the mixing chamber 501 of the inner mixing chamber 401. The inner flame holes 402 are arranged sequentially at intervals along the circumference of the inner flame cap 40 and are arranged in a ring to form a ring flame. The intermediate flame cap 30 defines an intermediate ring mixing chamber 301. The intermediate flame cap 30 has an inner ring flame hole 3011 and an outer ring flame hole 3012 that communicate with the intermediate ring mixing chamber 301. The outer ring flame hole 3012 is located outside the inner ring flame hole 3011. Both the inner ring flame hole 3011 and the outer ring flame hole 3012 are arranged sequentially at intervals along the circumference of the intermediate flame cap 30 and are arranged in a ring to form a ring flame. The outer flame cap 20 defines an outer ring mixing chamber 201. The outer flame cap 20 has an inner ring flame hole 2012 and an outer ring flame hole 2011 that communicate with the outer ring mixing chamber 201. The outer ring flame hole 2011 is located outside the inner ring flame hole 2012. Both the inner ring flame hole 2012 and the outer ring flame hole 2011 are arranged sequentially at intervals along the circumference of the outer flame cap 20 and are arranged in a ring to form a ring flame.

[0153] The outer ring mixing chamber 201 is connected to the third gas distribution channel 1024. The gas flowing from the third gas distribution channel 1024 into the outer ring mixing chamber 201 can exit from the outer ring outer burner hole 2011 and the outer ring inner burner hole 2012, respectively, forming a five-ring flame and a four-ring flame at the outer ring outer burner hole 2011 and the outer ring inner burner hole 2012, respectively. The gas flowing from the second gas distribution channel 1022 into the middle ring mixing chamber 301 can exit from the middle ring outer burner hole 3012 and the middle ring inner burner hole 3011, respectively, forming a three-ring flame and a two-ring flame at the middle ring outer burner hole 3012 and the middle ring inner burner hole 3011, respectively. The gas flowing from the first gas distribution channel 1021 into the inner ring mixing chamber 805 can exit from the inner burner hole 402, forming a one-ring flame. Therefore, the three fire caps 50 can form a first ring fire, a second ring fire, a third ring fire, a fourth ring fire, and a fifth ring fire, which are nested from the inside out.

[0154] In this embodiment, the inner flame cap 40, the middle flame cap 30, and the outer flame cap 20 can form a five-ring flame pattern to increase the flame area and flame uniformity of the flame cap 50. This arrangement increases the diversity of flame output methods and the flexibility of the heating area, meeting various cooking needs, such as frying and grilling.

[0155] Optionally, such as Figure 18As shown, the burner 100 also includes an ignition needle 60, which is located between the middle burner cap 30 and the outer burner cap 20. The ignition needle 60 is used to ignite the outer burner hole 3012 of the middle ring. After the outer burner hole 3012 of the middle ring is ignited, the flame at the outer burner hole 3012 of the middle ring can be sequentially transmitted to the inner burner hole 3011 and the inner burner hole 402 of the middle ring. The flame at the outer burner hole 3012 of the middle ring can also be sequentially transmitted to the inner burner hole 2012 and the outer burner hole 2011 of the outer ring.

[0156] In this embodiment, the burner 100 can achieve cross-channel ignition of the burner cap 50 using only one ignition needle 60. This ultimately results in the burner cap 50 forming a five-ring flame pattern. Reducing the number of ignition needles 60 and the space required for their placement improves the ease of installation of the burner 100, facilitates cleaning of the burner 100, reduces the assembly difficulty of the burner 100, and lowers the manufacturing cost of the burner 100.

[0157] Optionally, such as Figure 1 and Figure 5 As shown, the burner 100 also includes an ignition cap 601, which is disposed on the outer wall 5022 of the intermediate flame cap 30 and extends toward the outer flame cap 20. The ignition cap 601 is correspondingly disposed with the ignition needle 60 to enable the ignition needle 60 to ignite the outer flame hole 3012 of the intermediate ring.

[0158] In this embodiment, the ignition cap 601 is disposed on the intermediate flame cap 30 and is placed outside the intermediate flame cap 30 so as to cooperate with the ignition needle 60 located between the intermediate flame cap 30 and the outer flame cap 20 to discharge, thereby realizing the ignition of the outer flame hole 3012 of the intermediate ring.

[0159] Optionally, the outer wall 5022 of the intermediate flame cap 30 is also provided with an ignition hole 602 that communicates with the intermediate ring mixing chamber 301. The ignition hole 602 is located below the ignition cap 601, and the ignition hole 602 is correspondingly provided with the ignition needle 60 to cooperate with the ignition needle 60 and the ignition cap 601 for ignition. Among them, the outer wall surface of the intermediate flame cap 30 corresponding to the ignition hole 602 is recessed inward to form a relief groove (for ease of distinction, it is hereinafter referred to as the second relief groove 603), which is used to avoid the ignition needle 60.

[0160] In this embodiment, the ignition hole 602 is connected to the middle ring mixing chamber 301. Gas flows out from the middle ring mixing chamber 301, and the ignition cap 601 and ignition needle 60 cooperate to form a discharge arc. The gas ejected from the ignition hole 602 is ignited, and the flame is then transmitted to the entire middle ring outer flame hole 3012, achieving ignition of the middle ring outer flame hole 3012. The outer wall surface corresponding to the ignition hole 602 is recessed inward to form a second clearance groove 603. This facilitates the installation of the ignition needle 60 and allows the ignition needle 60 to be as close as possible to the middle flame cap 30, improving the ignition success rate. Furthermore, the inward recess of the second clearance groove 603 prevents liquid from flowing into the ignition hole 602 and clogging it.

[0161] Optionally, the intermediate flame cap 30 is further provided with an intermediate flame stabilizing groove 3013 that communicates with the intermediate ring mixing chamber 301. The intermediate flame stabilizing groove 3013 extends circumferentially along the intermediate flame cap 30 and is located below the intermediate ring outer flame hole 3012. The ignition hole 602 is located above the intermediate flame stabilizing groove 3013. After ignition, the flame at the ignition hole 602 ignites the intermediate ring outer flame hole 3012 circumferentially along the intermediate flame cap 30 through the intermediate flame stabilizing groove 3013.

[0162] In this embodiment, after the ignition hole 602 is ignited, the flame is transmitted to the lower middle ring flame stabilizer groove 3013, and then transmitted to the circumference of the entire middle flame cover 30 through the middle ring flame stabilizer groove 3013, while simultaneously igniting the middle ring outer flame hole 3012, forming a three-ring flame.

[0163] Optionally, the central flame cover 30 also has a first flame transfer groove 302 that communicates with the central ring mixing chamber 301. The first flame transfer groove 302 is used to transfer flame between the inner flame hole 3011 and the outer flame hole 3012 of the central ring. There are multiple first flame transfer grooves 302, which are arranged sequentially at intervals along the circumference of the central flame cover 30.

[0164] In this embodiment, the central flame cover 30 is provided with multiple first flame transfer grooves 302, which improves the smoothness of flame transfer between the three-ring flame and the two-ring flame.

[0165] Optionally, the outer flame cover 20 is provided with a second flame transfer groove 202, which is connected to the outer ring mixing chamber 201 and is used to transfer flame between the outer ring outer flame hole 2011 and the outer ring inner flame hole 2012.

[0166] Optionally, such as Figure 5As shown, the central flame cover 30 includes a first inner wall 303, a first outer wall 304, and a first top wall 305. The first inner wall 303 is annular and has a central ring inner flame hole 3011 and a first flame transfer hole 3021 communicating with the central ring mixing chamber 301. The first outer wall 304 is annular and located outside the first inner wall 303. The first outer wall 304 has a central ring outer flame hole 3012 and a second flame transfer hole 3022 communicating with the central ring mixing chamber 301. The first top wall 305 is annular and connects the upper end of the first inner wall 303 and the upper end of the first outer wall 304. The first inner wall 303, the first outer wall 304, and the first top wall 305 together form the central ring mixing chamber 301.

[0167] In this embodiment, the first inner wall 303 and the first outer wall 304 are arranged in parallel so that the inner flame hole 3011 and the outer flame hole 3012 of the middle ring are arranged in parallel. This prevents the second and third ring flames from crossing, reduces smoke, and makes the flame of the flame cap 50 more uniform.

[0168] like Figure 16 As shown, the first ignition channel 302 sequentially penetrates the first inner sidewall 303, the first top wall 305, and the first outer sidewall 304. The first ignition channel 302 is connected to the first ignition hole 3021 and the second ignition hole 3022. The upper end of the first ignition channel 302 is open, and the two opposite sidewalls at the opening of the first ignition channel 302 are provided with first flow equalization holes. The first flow equalization holes extend upward, and the lower end of the first flow equalization holes is connected to the middle ring mixing chamber 301. The upper end of the first flow equalization holes is closed.

[0169] In this embodiment, the first flame transfer hole 3021 and the inner ring flame hole 3011 are both located on the first inner sidewall 303 of the flame cover 30, and the first flame transfer hole 3021 and the inner ring flame hole 3011 are arranged alternately along the circumference of the flame cover 30. Thus, when the inner ring flame hole 3011 is ignited, the flame at the first flame transfer hole 3021 can also be ignited, and then transmitted to the second flame transfer hole 3022 via the first flame transfer groove 302. Since the second flame transfer hole 3022 is located on the first outer sidewall 304 of the flame cover 30, and the second flame transfer hole 3022 and the outer ring flame hole 2011 are arranged alternately along the circumference of the flame cover 30, after the second flame transfer hole 3022 is ignited, the flame can be transmitted to the entire outer ring flame hole 3012. Similarly, after the second ignition hole 3022 is ignited, it can also be transmitted through the first ignition groove 302 to the first ignition hole 3021, ultimately realizing the ignition transmission between the second and third rings.

[0170] The first uniform flow orifice is located in the middle of the first flame transfer groove 302 and extends upwards, situated on two side walls opposite the opening of the first flame transfer groove 302. This arrangement ensures that the gas flowing from the first uniform flow orifice on the two side walls is relatively opposed, thereby improving the uniformity of gas-air mixing within the first flame transfer groove 302. Simultaneously, it reduces the flow velocity, improving flame stabilization performance. This solves the problem of flame transfer blockage caused by excessively high gas velocity in the open type of the first flame transfer groove 302, which is connected to the outside environment. It effectively stabilizes the flame at the first flame transfer groove 302, ensuring secondary air supply within the first flame transfer groove 302 and guaranteeing combustion of the flame within it.

[0171] Optionally, such as Figure 1 As shown, the outer flame cap 20 is provided with an outer ring inner flame stabilizing groove 2014 that communicates with the outer ring mixing chamber 201. The outer ring inner flame stabilizing groove 2014 is located below the outer ring inner flame hole 2012 and extends along the circumference of the outer flame cap 20.

[0172] In this embodiment, the outer ring inner flame stabilizing groove 2014 is located below the outer ring inner flame hole 2012, which can stabilize the lower edge root of the flame of the outer ring inner flame hole 2012 and prevent the flame of the outer ring inner flame hole 2012 from leaving the flame.

[0173] Optionally, the outer flame cap 20 is also provided with an outer ring outer flame stabilizing groove 2013 that communicates with the outer ring mixing chamber 201. The outer ring outer flame stabilizing groove 2013 is located below the outer ring outer flame hole 2011 and extends along the circumference of the outer flame cap 20.

[0174] In this embodiment, the outer ring outer flame stabilizing groove 2013 is located below the outer ring outer flame hole 2011, which can stabilize the flame at the root of the lower edge of the flame of the outer ring outer flame hole 2011 and prevent the flame at the outer ring outer flame hole 2011 from leaving the flame.

[0175] Optionally, such as Figure 11 As shown, the outer flame cap 20 includes a second inner wall 203, a second outer wall 204, and a second top wall 205. The second inner wall 203 is annular and has an outer ring inner flame hole 2012 and a third flame transfer hole 2021 communicating with the outer ring mixing chamber 201. The second outer wall 204 is annular and located outside the second inner wall 203. The second outer wall 204 has an outer ring outer flame hole 2011 and a fourth flame transfer hole 2022 communicating with the outer ring mixing chamber 201. The second top wall 205 is annular and connects the upper end of the second inner wall 203 and the upper end of the second outer wall 204. The second inner wall 203, the second outer wall 204, and the second top wall 205 together form the outer ring mixing chamber 201.

[0176] In this embodiment, the second inner wall 203 and the second outer wall 204 are arranged in parallel so that the inner flame hole 2012 and the outer flame hole 2011 of the outer ring are arranged in parallel. This avoids the four-ring flame and the five-ring flame crossing, reduces smoke, and makes the flame of the flame cap 50 more uniform.

[0177] like Figure 15 As shown, the outer flame cover 20 is provided with a second flame transfer groove 202, which sequentially penetrates the second inner side wall 203, the second top wall 205, and the second outer side wall 204. The second flame transfer groove 202 is connected to the outer ring mixing chamber 201, the third flame transfer hole 2021, and the fourth flame transfer hole 2022. The upper end of the second flame transfer groove 202 is open, and the two opposite side walls at the opening of the second flame transfer groove 202 are provided with second flow equalization holes 2023. The second flow equalization holes 2023 extend upward, and the lower end of the second flow equalization holes 2023 is connected to the outer ring mixing chamber 201. The upper end of the second flow equalization holes 2023 is closed.

[0178] In this embodiment, the third ignition hole 2021 and the outer ring inner ignition hole 2012 are both located on the second inner sidewall 203 of the outer ignition cover 20, and are arranged alternately along the circumference of the outer ignition cover 20. The fourth ignition hole 2022 and the outer ring outer ignition hole 2011 are both located on the second outer sidewall 204 of the outer ignition cover 20, and are arranged alternately along the circumference of the outer ignition cover 20. The working process and effect of the third ignition hole 2021, the fourth ignition hole 2022, and the second ignition groove 202 are the same as those of the first ignition hole 3021, the second ignition hole 3022, and the first ignition groove 302, and will not be described again here. The function of the second flow equalization hole 2023 is also the same as that of the first flow equalization hole described above, and will not be described again here.

[0179] Optionally, such as Figure 1 As shown, the gas distribution plate 10, the intermediate burner cap 30, and the outer burner cap 20 together define the first and second air flow channels 701, which are located between the intermediate burner cap 30 and the outer burner cap 20. The ignition needle 60 is located within the first and second air flow channels 701, and the outer burner hole 3012 of the middle ring and / or the inner burner hole 2012 of the outer ring are both located within the first and second air flow channels 701, which are interconnected.

[0180] In this embodiment, the outer burner hole 3012 of the middle ring and / or the inner burner hole 2012 of the outer ring are both located within the first and secondary air flow channels 701, which can increase the supply of secondary air at the outer burner hole 3012 of the middle ring and / or the inner burner hole 2012 of the outer ring, improve the combustion completeness of the gas at the outer burner hole 3012 of the middle ring and / or the inner burner hole 2012 of the outer ring, and reduce flue gas.

[0181] Optionally, such as Figure 1 and Figure 10 As shown, in the case where the flame cap 50 includes at least two flame caps 50, this embodiment of the present disclosure provides a flame cap assembly. The flame cap assembly includes a first flame cap 507 and a second flame cap 508 sequentially fitted from the outside to the inside. The first flame cap 507 defines a first mixing chamber. The inner sidewall 5021 of the first flame cap 507 has a first flame hole 5071 communicating with the first mixing chamber. The first flame hole 5071 is inclined upward in the direction from the outside to the inside. The first flame cap 507 is fitted on the outside of the second flame cap 508. The second flame cap 508 defines a second mixing chamber. The outer sidewall 5022 of the second flame cap 508 has a second flame hole 5081 communicating with the second mixing chamber. The second flame hole 5081 is inclined upward in the direction from the inside to the outside. The angle between the first flame hole 5071 and the horizontal direction is a first angle, and the angle between the second flame hole 5081 and the horizontal direction is a second angle. The first angle and the second angle are not equal.

[0182] In this embodiment, the inclined arrangement of the first flame hole 5071 and the second flame hole 5081 can improve the ability of the first flame hole 5071 and the second flame hole 5081 to entrain secondary air and increase the supply of secondary air. Since the first flame hole 5071 and the second flame hole 5081 are arranged opposite each other, the first included angle and the second included angle are different in this embodiment, so that the flame outlet directions of the first flame hole 5071 and the second flame hole 5081 are staggered, avoiding flame overlap, and at the same time avoiding the two flame holes competing for air, thus reducing the smoke value.

[0183] Optionally, the angle of the first included angle is greater than the angle of the second included angle.

[0184] In this embodiment, since the first flame cap 507 is located on the outside, the firepower at the first flame hole 5071 is relatively strong. Therefore, the first flame hole 5071 is tilted at a large angle, which can draw in more secondary air to ensure the complete combustion of the first flame hole 5071.

[0185] Optionally, the first included angle ranges from 45° to 60°.

[0186] In this embodiment, when the first included angle is less than 45°, the tilt angle of the first flame hole 5071 is too small, which easily leads to flame detachment at the first flame hole 5071 and makes it difficult for the first flame hole 5071 to inject secondary air. When the first included angle is greater than 60°, the tilt angle of the first flame hole 5071 is too large, resulting in a small flame range at the first flame hole 5071 and a too fast gas flow rate, which is not conducive to complete combustion of the flame.

[0187] Optionally, the first included angle can be 45°, 50°, 55°, or 60°.

[0188] Optionally, the second included angle ranges from 35° to 50°.

[0189] In this embodiment, when the second included angle is less than 35°, the tilt angle of the second flame hole 5081 is too small, which easily leads to flame detachment at the second flame hole 5081 and makes it difficult for the second flame hole 5081 to entrain secondary air. When the second included angle is greater than 55°, the tilt angle of the second flame hole 5081 is too large, resulting in a small flame range at the second flame hole 5081 and a too fast gas flow rate, which is not conducive to complete combustion of the flame.

[0190] Optionally, the first included angle can be 35°, 45°, 50°, or 55°.

[0191] Optionally, such as Figure 10 As shown, there are multiple first flame holes 5071, which are arranged sequentially at intervals along the circumference of the first flame cap 507; there are multiple second flame holes 5081, which are arranged sequentially at intervals along the circumference of the second flame cap 508; wherein, along the circumference of the flame cap assembly, the first flame holes 5071 and the second flame holes 5081 are arranged alternately.

[0192] In this embodiment, the first flame hole 5071 and the second flame hole 5081 are staggered, which can further prevent the first flame hole 5071 and the second flame hole 5081 from crossing in the circumferential direction of the flame cap 50, so as to avoid the flames at the first flame hole 5071 and the second flame hole 5081 from overlapping and reduce the smoke value.

[0193] Optionally, the height of the first fire hole 5071 is the same as or similar to the height of the second fire hole 5081.

[0194] In this embodiment, the first flame hole 5071 and the second flame hole 5081 are at the same or similar heights, so that the annular flame at the first flame hole 5071 and the annular flame at the second flame hole 5081 are at the same or similar heights, thereby improving the heating uniformity of cooking utensils such as pots and pans.

[0195] Optionally, such as Figure 11 As shown, the first flame cap 507 also includes a first reinforcing rib 5041, which is located in the first mixing chamber and extends radially along the first flame cap 507. The first reinforcing rib 5041 is connected between two opposite walls of the first mixing chamber.

[0196] In this embodiment, the first reinforcing rib 5041 is located in the first mixing chamber. On the one hand, it can increase the strength of the first flame cap 507, and on the other hand, it can improve the turbulence effect of the airflow in the first mixing chamber and improve the circumferential uniformity of the gas flow in the first mixing chamber.

[0197] Optionally, there may be multiple first reinforcing ribs 5041, which are arranged sequentially and at intervals along the circumference of the first flame cap 507 in the first mixing chamber.

[0198] In this embodiment, there are multiple first reinforcing ribs 5041, which increases the effect of the first reinforcing ribs 5041 and improves the strength of the first flame cap 507 and the uniformity of the circumferential flow of the gas.

[0199] Optionally, such as Figure 6 As shown, the second flame cap 508 also includes a second reinforcing rib 5042, which is located in the second mixing chamber and extends radially along the second flame cap 508. The second reinforcing rib 5042 is connected between two opposite walls of the second mixing chamber.

[0200] In this embodiment, the second reinforcing rib 5042 is located in the second mixing chamber. On the one hand, it can increase the strength of the second burner cap 508, and on the other hand, it can improve the turbulence effect of the airflow in the second mixing chamber and improve the circumferential uniformity of the gas flow in the second mixing chamber.

[0201] Optionally, there may be multiple second reinforcing ribs 5042, which are arranged sequentially and at intervals along the circumference of the second flame cap 508 in the second mixing chamber.

[0202] In this embodiment, there are multiple second reinforcing ribs 5042, which increases the effect of the second reinforcing ribs 5042 and improves the strength of the second flame cap 508 and the uniformity of the circumferential flow of the gas.

[0203] Optionally, the first burner cap 507 and the second burner cap 508 are disposed above the gas distribution plate 10, and together with the gas distribution plate 10, define a secondary air flow channel 70. The secondary air flow channel 70 is located between the first burner cap 507 and the second burner cap 508, wherein the first flame hole 5071 and the second flame hole 5081 are both located within the secondary air flow channel 70. This can increase the amount of secondary air supplied to the first flame hole 5071 and the second flame hole 5081, so as to ensure that the flame at the first flame hole 5071 and the second flame hole 5081 can burn completely, thereby reducing the smoke level.

[0204] Optionally, such as Figure 1 As shown, the flame cap assembly also includes a third flame cap 509, with a second flame cap 508 sleeved on the outside of the third flame cap 509. The third flame cap 509 defines a third mixing chamber, and the outer side wall 5022 of the third flame cap 509 has a fifth flame hole 5091 communicating with the third mixing chamber. The outer side wall 5022 of the first flame cap 507 has a third flame hole 5072 communicating with the first mixing chamber, and the inner side wall 5021 of the second flame cap 508 has a fourth flame hole 5082 communicating with the second mixing chamber.

[0205] In this embodiment, the first flame cap 507, the second flame cap 508, and the third flame cap 509 can together form a five-ring flame pattern. The first flame cap 507 and the second flame cap 508 are located in the outer and middle rings, respectively, resulting in a larger flame intensity and a wider flame range. Therefore, the arrangement of the first flame hole 5071 and the second flame hole 5081 as described in the above embodiment can effectively reduce the flue gas concentration.

[0206] In one specific embodiment, the first flame cap 507 includes an outer flame cap 20, the first flame hole 5071 includes an outer ring inner flame hole 2012, the third flame hole 5072 includes an outer ring outer flame hole 2011, and the first mixing chamber includes an outer ring mixing chamber 201. The second flame cap 508 includes a middle flame cap 30, the second flame hole 5081 includes an inner ring outer flame hole, and the fourth flame hole 5082 includes a middle ring inner flame hole 3011. The second mixing chamber includes a middle ring mixing chamber 301. The fifth flame hole 5091 includes an inner flame hole 402, and the third mixing chamber includes an inner mixing chamber 401.

[0207] like Figure 6 As shown, this embodiment of the present disclosure also provides a flame cap 50. When the mixing chamber 501 extends circumferentially along the flame cap 50, at least one inner wall surface of the mixing chamber 501 is constructed with a protrusion 5025 and a groove 5024. The protrusion 5025 is provided with a flame hole communicating with the mixing chamber 501. The flame hole penetrates the protrusion 5025 and the side wall of the flame cap 50 (the side wall refers to one or more of the inner side wall 5021, outer side wall 5022 and top wall 5023 of the flame cap 50) to realize the combustion of the flame cap 50. The protrusion 5025 and the groove 5024 are arranged sequentially along the circumference of the flame cap 50.

[0208] In this embodiment, the groove 5024 reduces unnecessary material thickness in the burner cap 50, thereby reducing its weight and manufacturing cost. The protrusion 5025 of the burner cap 50 is used to set the flame holes, ensuring the depth of the flame holes and thus improving the flame stability and service life. The groove 5024 increases the space of the mixing chamber 501, allowing more vortices to form in the groove 5024 as the gas flows within it. This slows down the flow velocity of the gas within the mixing chamber 501, improving the uniformity of the gas flow along the circumference of the burner cap 50. This also makes the gas output from the flame holes along the circumference of the burner cap 50 more uniform, resulting in a more uniform annular flame and improved heating effect on cookware and other utensils.

[0209] Optionally, there are multiple protrusions 5025 and multiple recesses 5024, which are arranged alternately along the circumference of the flame cover 50.

[0210] In this embodiment, multiple protrusions 5025 and grooves 5024 are staggered, and the flame holes are located on the protrusions 5025. This can be understood as follows: a groove 5024 is provided between every two adjacent protrusions 5025, and each protrusion 5025 has one or more flame holes. In other words, grooves 5024 are provided on the inner wall surface of the mixing chamber 501 where there are no flame holes. This increases the number of grooves 5024 within the mixing chamber 501, thereby increasing the number of vortices within the mixing chamber 501. By forming more vortices, the flow velocity of the combustion gas within the mixing chamber 501 can be further reduced, thereby improving the uniformity of the circumferential flow of the mixture.

[0211] Optionally, such as Figure 6 As shown, the protrusion 5025 defines an avoidance channel 5026, which is connected to the groove 5024 to realize the flow of air in the mixing chamber 501 along the circumference of the flame cap 50.

[0212] In this embodiment, to ensure that the gas in the mixing chamber 501 can flow circumferentially along the burner cap 50, the protrusion 5025, while having flame holes, also needs to define a clearance channel 5026 to ensure that the gas can flow sequentially through the protrusion 5025 and the recess 5024. Specifically, the clearance channel 5026 extends circumferentially along the burner cap 50 to achieve communication between the clearance channel 5026 and the recess 5024.

[0213] Optionally, along the circumference of the flame cap 50, the length of a recess 5024 is greater than the length of a protrusion 5025.

[0214] In this embodiment, the length of any groove 5024 along the circumference of the burner cap 50 is greater than the length of a protrusion 5025 along the circumference of the burner cap 50. This increases the area of ​​the vortex and thus increases the uniformity of the gas flow in the mixing chamber 501.

[0215] Optionally, the burner cap 50 also includes a reinforcing rib 504 located within the recess 5024 and extending radially along the burner cap 50, the reinforcing rib 504 being supported between two opposing walls of the mixing chamber 501.

[0216] In this embodiment, the reinforcing rib 504 can increase the strength of the burner cap 50 and improve the turbulence effect of the gas in the mixing chamber 501, thereby improving the uniformity of the circumferential flow.

[0217] Optionally, there may be multiple reinforcing ribs 504, with at least one reinforcing rib 504 in each groove portion 5024.

[0218] In this embodiment, multiple connecting ribs 503 can enhance the strength of the burner cap 50 and increase the turbulence effect, thereby improving the uniformity of gas flow. One or more reinforcing ribs 504 can be provided in each groove 5024, and the arrangement can be based on the size and shape of the burner cap 50. Any method of setting the reinforcing ribs 504 is an optional embodiment of this application.

[0219] Optionally, the burner cap 50 also includes a connecting portion 505, which is disposed within the recessed portion 5024 and is used to connect with the air distribution plate 10. Specifically, the air distribution plate 10 is provided with a connecting mating portion 107, and when the connecting portion 505 mates with the connecting mating portion 107, the burner cap 50 is connected to the air distribution plate 10.

[0220] Optionally, the connecting part 505 and the connecting mating part 107 are detachably connected. This facilitates the disassembly and installation of the burner cap 50 and the gas distribution plate 10, thereby facilitating the cleaning, maintenance, and replacement of the burner cap 50 and the gas distribution plate 10.

[0221] For example, the connecting part 505 includes a third screw hole 5051, and the connecting mating part 107 includes a first screw hole 1071 and a second screw hole 1072. The screw passes through the first screw hole 1071, the second screw hole 1072 and the third screw hole 5051 to realize the connection between the burner cap 50 and the upper air distribution plate and the lower air distribution plate 101.

[0222] Alternatively, the connecting part 505 and the connecting mating part 107 can also be fixedly connected, such as by welding or integral molding.

[0223] Optionally, the protrusion 5025 may have one or more flame holes. When the protrusion 5025 has multiple flame holes, the multiple flame holes of each protrusion 5025 can form a flame hole group 5013, that is, a groove 5024 is provided between every two adjacent flame hole groups 5013. In this way, the multiple flame hole groups 5013 are arranged at intervals along the circumference of the flame cap 50, which can not only ensure that the flame cap 50 forms a ring flame, but also reduce the distance between adjacent flame hole groups 5013 and reduce smoke.

[0224] Optionally, such as Figure 5 and Figure 6 As shown, the inner wall 5021, outer wall 5022, and top wall 5023 of the flame cap 50 together enclose the mixing chamber 501. Therefore, the inner wall surface of the mixing chamber 501 includes the inner wall surface of the inner wall 5021, the inner wall surface of the outer wall 5022, and the inner wall surface of the top wall 5023. Among them, the inner wall surfaces of the mixing chamber 501 corresponding to the inner wall 5021 and the top wall 5023 are constructed with protrusions 5025 and grooves 5024.

[0225] In this embodiment, the inner wall 5021 corresponding to the inner wall 5021 and the top wall 5023 is constructed with a protrusion 5025 and a groove 5024. That is, the material thickness of the top wall 5023 and the inner wall 5021 of the burner cap 50 is reduced, and the flame holes are located on the inner wall 5021 and / or the top wall 5023. Since the outer flame is stronger and the inner flame is weaker when the burner cap 50 is burning, the protrusion 5025 and the flame holes on the inner wall 5021 and / or the top wall 5023 of the burner cap 50 can reasonably distribute the gas in the mixing chamber and avoid the flame holes on the inner wall 5021 and / or the top wall 5023 competing with the outer flame holes for air, resulting in insufficient flame of the outer flame hole 5011.

[0226] Optionally, the flame hole passes through the protrusion 506 and the inner wall 5021 in sequence, and is inclined upward along the flow direction of the airflow inside the flame hole. The inclined setting of the flame hole can increase the entrainment effect of the gas and flame on the secondary air at the flame hole, thereby increasing the amount of secondary air replenished.

[0227] Optionally, the outer wall 5022 of the burner cap 50 is provided with multiple external flame holes, which are arranged sequentially and at intervals along the circumference of the burner cap 50. Both the external flame holes and the flame holes are connected to the mixing chamber 501. That is to say, the gas in the mixing chamber 501 can flow to both the external flame holes and the flame holes simultaneously, thereby increasing the uniformity of flame output from the external flame holes along the circumference of the burner cap 50 due to the recessed portion 5024.

[0228] Optionally, a group of flame holes 5013 is provided at the protrusion 5025, with the number of protrusions 5025 and flame hole groups 5013 being the same and corresponding one-to-one. This increases the flame area of ​​the flame holes at the protrusion 5025. Thus, the circumferential length of the groove 5024 is greater than the circumferential length of the protrusion 5025, and the flame hole groups 5013 of multiple protrusions 5025 can form a ring flame to achieve uniform heating of the flame cap 50. Other effects of the flame hole group 5013 are the same as described above and will not be repeated here.

[0229] In some optional embodiments, the aforementioned burner cap 50 includes a middle burner cap 30, which is located between the outer burner cap 20 and the inner burner cap 40. The middle burner cap 30 has a protrusion 5025 and a groove 5024 in its middle annular mixing chamber 301, which can improve the uniformity of the circumferential flow of the gas in the middle annular mixing chamber 301. Optionally, the protrusion 5025 can be provided on the inner wall surface of the mixing chamber 501 corresponding to the top wall 5023 and the inner side wall 5021 of the middle burner cap 30. Optionally, the flame holes include a middle annular inner flame hole 3011, which sequentially penetrates the protrusion 5025 and the inner side wall 5021 of the middle burner cap 30. The middle annular inner flame hole 3011 includes a plurality of flame hole groups 5013, and each protrusion 5025 is provided with a flame hole group 5013. A groove 5024 is constructed between adjacent flame hole groups 5013 to increase the number of vortices in the central annular mixing chamber 301 and improve the uniformity of the circumferential flow of the airflow in the central annular mixing chamber 301. The specific arrangement of the flame hole groups 5013 is the same as that described above in this application, and will not be repeated here.

[0230] In some alternative embodiments, such as Figure 8 and Figure 9 As shown, the flame cap 50 includes a flame cap body 502 and a protrusion 506. The flame cap body 502 defines a mixing chamber 501 and has a plurality of first flame outlet holes 50151, which connect the mixing chamber 501 to the outside. The plurality of first flame outlet holes 50151 are arranged sequentially at intervals along the circumference of the flame cap body 502. The protrusion 506 protrudes from the inner wall surface of the mixing chamber 501. At least one second flame outlet hole 50152 is provided at the connection between the protrusion 506 and the flame cap body 502. The first flame outlet holes 50151 and the second flame outlet holes 50152 are arranged along the circumference of the flame cap 50 to realize the circumferential gas discharge of the flame cap 50.

[0231] In this embodiment, due to the structural complexity of the flame cap 50, the interior of the mixing chamber 501 may inevitably have protrusions 506. These protrusions 506 can be used to achieve multiple functions such as connecting the flame cap 50 or emitting flame. This results in a flame blind zone at the connection between the protrusion 506 and the flame cap body 502. In related technologies, flame holes are generally not provided at the protrusion 506, which leads to uneven gas emission from the flame cap 50 at the protrusion 506, and consequently, uneven flame. In this application, the protrusion 506 is located inside the mixing chamber 501 and is used to achieve the relevant functions of the flame cap 50. For example, components such as connecting parts 50, flame holes, or reinforcing ribs 504 can be provided on the protrusion 506 to achieve multiple functions of the flame cap 50. The protrusion 506 and the flame cap body 502 are provided with a second flame hole 50152, which is arranged along the circumference of the flame cap 50. This can be understood as follows: the second flame outlet 50152 fills the gap of the first flame outlet 50151 located at the protrusion 506, so that the first flame outlet 50151 and the second flame outlet 50152 both emit gas in the circumferential direction of the flame cap 50, thereby improving the uniformity of gas emission in the circumferential direction of the flame cap 50, and thus improving the uniformity of flame in the circumferential direction of the flame cap 50.

[0232] Optionally, such as Figure 14 As shown, the flame cap 50 also has a flame stabilizing groove 5016, which extends circumferentially along the flame cap body 502 and penetrates the flame cap body 502 and the protrusion 506 along the circumferential direction of the flame cap 50. The second flame outlet 50152 includes a flame stabilizing hole 5015, which is located below the flame stabilizing groove 5016, and the flame stabilizing groove 5016 is connected to the outlet end of the flame stabilizing hole 5015.

[0233] In this embodiment, the flame stabilizing hole 5015 connects the flame stabilizing groove 5016 and the mixing chamber 501 to provide fuel gas to the flame stabilizing groove 5016, thereby realizing the flame stabilizing function of the flame stabilizing groove 5016. Since the flame stabilizing groove 5016 extends circumferentially along the burner cap 50, the flame stabilizing holes 5015 also need to be arranged sequentially along the circumference of the burner cap 50. The flame stabilizing hole 5015 is also provided at the connection between the protrusion 506 and the burner cap body 502, which can improve the uniformity of the gas output from the flame stabilizing hole 5015, thereby ensuring the stability of the flame in the flame stabilizing groove 5016 circumferentially around the burner cap 50.

[0234] Optionally, such as Figure 14 As shown, from bottom to top, the flame stabilizing hole 5015 is inclined towards the inside of the protrusion 506 along the circumference of the flame cap 50.

[0235] In this embodiment, since the flame stabilizing hole 5015 is located below the flame stabilizing groove 5016, the flame stabilizing hole 5015 needs to extend from bottom to top to achieve communication with the flame stabilizing groove 5016. At the same time, the flame stabilizing hole 5015 is inclined towards the inside of the protrusion 506 along the circumference of the flame cap 50 in the direction from bottom to top. In this way, the flame stabilizing hole 5015 can exhaust gas as close as possible to the center of the protrusion 506, improving the gas exhaust uniformity of the flame stabilizing hole 5015 in the circumference of the flame cap 50, thereby improving the gas exhaust uniformity of the flame stabilizing groove 5016.

[0236] Optionally, the protrusion 506 is provided with a connecting part 505, which is used to connect with the connecting mating part 107 of the gas distribution plate 10. The protrusion 506 and the second flame outlet 50152 can not only realize the connection between the flame cap 50 and the gas distribution plate 10, but also prevent the protrusion 506 from emitting gas without a flame outlet.

[0237] Optionally, the protrusion 506 may include a third screw hole 5051, meaning that a flame hole is provided at the connection between the third screw hole 5051 and the burner cap body 502, thereby improving the uniformity of gas output at the connection between the third screw hole 5051 and the burner cap body 502. Optionally, there are multiple connecting portions 505, and the number of connecting portions 505 is the same as the number of connecting mating portions 107, and they correspond one-to-one. The connecting portions 505 are arranged sequentially at intervals along the circumference of the burner cap 50, and each connecting portion 505 has one or more flame holes at the connection between the protrusion 506 and the burner cap body 502, which can further improve the uniformity of gas output at the flame holes of the protrusion 506.

[0238] Optionally, when the protrusion 506 is provided with a connecting part 505, the flame hole includes a flame stabilizing hole 5015, that is, the flame stabilizing hole 5015 is provided at the connection between the protrusion 506 and the flame cap body 502.

[0239] Optionally, the ignition hole 602 penetrates the protrusion 506 and the burner body 502, and the ignition hole 602 connects the mixing chamber 501 and the outside.

[0240] In this embodiment, the ignition hole 602 penetrates the protrusion 506 and the flame cap body 502. It can be understood that the flame cap 50 at the ignition hole 602 utilizes the protrusion 506 to increase the material thickness, thereby ensuring the depth of the ignition hole 602 and thus guaranteeing the service life of the flame cap 50 at the ignition hole 602. Correspondingly, a flame hole is also provided at the connection between the protrusion 506 with the ignition hole 602 and the flame cap body 502 to ensure the uniformity of the gas output from the flame stabilizing groove 5016 at the ignition hole 602.

[0241] Optionally, when the protrusion 506 is provided with an ignition hole 602, the ignition hole includes a flame stabilizing hole 5015, that is, the flame stabilizing hole 5015 is provided at the connection between the protrusion 506 and the flame cap body 502.

[0242] Optionally, the protrusion 506 is located on the inner wall of the mixing chamber 501 corresponding to the outer wall 5022 of the burner cap 50, and the ignition hole 602 is inclined towards the center of the protrusion 506 along the circumference of the burner cap 50 in the direction from the inside to the outside.

[0243] In this embodiment, the material thickness at the ignition hole 602 is increased, and the ignition hole 602 is inclined, which can further increase the hole depth of the ignition hole 602 and improve the service life of the flame cap 50 at the ignition hole 602.

[0244] Optionally, there may be multiple ignition holes 602, with at least two of the multiple ignition holes 602 being spaced apart circumferentially along the burner cap 50.

[0245] The arrangement of multiple ignition holes 602 increases the flow rate of gas at each ignition hole 602, thereby improving ignition efficiency. Furthermore, since all multiple ignition holes 602 extend inwards towards the protrusion 506, the distance between adjacent ignition holes 602 is reduced, improving the concentration of gas flowing from the ignition holes 602 and increasing the ignition success rate.

[0246] In some optional embodiments, the flame cap 50 provided in this disclosure can be an inner flame cap 40, a middle flame cap 30, and / or an outer flame cap 20. When the flame cap 50 is provided on a protrusion 506 having the above-mentioned connecting part 505 or ignition hole 602, a flame hole can be provided at the connection between the protrusion 506 and the flame cap body 502. In particular, a flame stabilizing hole 5015 can be provided to improve the uniformity of the gas output of the flame stabilizing hole 5015 of the flame cap 50.

[0247] Optionally, the inner flame cover 40 is provided with an inner ring flame stabilizing groove 406, which is located below the inner flame hole 402 and is used to stabilize the flame of the inner flame hole 402.

[0248] Optionally, the inner flame cover 40 is also provided with a nose-shaped protrusion 403, which protrudes from the outer side wall 5022 of the inner flame cover 40. The nose-shaped protrusion 403 is provided with a groove 404 and a thermocouple hole 4041 that communicate with the inner mixing chamber 401. Thermocouple 405 corresponds to the nose-shaped protrusion 403. The nose-shaped protrusion 403 is used to ensure that the thermocouple hole 4041 and the thermocouple 405 can correspond to each other, so as to ensure the normal operation of thermocouple 405.

[0249] Optionally, the bottom of the inner burner cap 40 is provided with a second connecting part, and the lower gas distribution plate 101 is provided with a second connecting mating part. When the second connecting part and the second connecting mating part are connected, the inner burner cap 40 is connected to the lower gas distribution plate 101.

[0250] Optionally, if the air distribution plate 10 includes an upper air distribution plate 106, the upper air distribution plate 106 is provided with a clearance hole to facilitate the connection between the inner burner cap 40 and the lower air distribution plate 101.

[0251] Optionally, the second connecting part and the second connecting mating part can be connected by screws.

[0252] Optionally, the second connecting part is provided with a limiting part, and the second connecting mating part is provided with a limiting mating part. When the limiting part and the limiting mating part are engaged, the inner fire cover 40 can be restricted from rotating relative to the gas distribution plate 10.

[0253] Optionally, when the distributor plate 10 includes an upper distributor plate 106, the inner burner cap 40 is sealed to the upper distributor plate 106 via an end face. The outer burner cap 20 and the middle burner cap 30 are both sealed to the upper distributor plate 106 via an end face.

[0254] This disclosure also provides a gas stove, including the burner 100 of any of the above embodiments.

[0255] This disclosure also provides a gas stove that, because it includes the burner 100 of any of the above embodiments, has the beneficial effects of the burner 100 of any of the above embodiments, which will not be repeated here.

[0256] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A burner, characterized in that, include: The gas distribution plate includes a lower gas distribution plate, which defines multiple gas distribution channels, and the multiple gas distribution channels are arranged sequentially from the inside to the outside; the lower gas distribution plate has an air inlet, which is connected to the gas distribution channels so that the gas flows into the gas distribution channels through the air inlet; wherein at least two adjacent gas distribution channels share one air inlet; A flame cover, positioned above the gas distribution plate, includes a first flame cover, a second flame cover, and a third flame cover. The first flame cover defines a first mixing chamber, and its inner wall has a first flame hole communicating with the first mixing chamber, the first flame hole being inclined upwards from the outside to the inside. The first flame cover is fitted onto the outside of the second flame cover, which defines a second mixing chamber, and its outer wall has a second flame hole communicating with the second mixing chamber, the second flame hole being inclined upwards from the inside to the outside. The angle between the first flame hole and the horizontal direction is a first angle, and the angle between the second flame hole and the horizontal direction is a second angle, wherein the first angle is greater than the second angle. The second flame cover is fitted onto the outside of the third flame cover, which defines a third mixing chamber, and its outer wall has a fifth flame hole communicating with the third mixing chamber. The outer wall of the first flame cover has a third flame hole communicating with the first mixing chamber, and the inner wall of the second flame cover has a fourth flame hole communicating with the second mixing chamber.

2. The burner according to claim 1, characterized in that, The plurality of gas distribution channels include: The second air distribution channel is a ring extending circumferentially along the lower air distribution plate; The third air distribution channel is a ring extending circumferentially along the lower air distribution plate, adjacent to the second air distribution channel, and sleeved on the outside of the second air distribution channel; The lower gas distribution plate is further defined as follows: An air intake passage extends radially along the lower air distribution plate and connects the second air distribution passage and the third air distribution passage; The air inlet includes a first air inlet, which is located at one end of the air intake channel, so that the gas flows into the air intake channel through the first air inlet and then flows to the second air distribution channel and the third air distribution channel respectively.

3. The burner according to claim 2, characterized in that, Along the flow direction of the airflow within the second air distribution channel, the bottom wall of the second air distribution channel is at least partially inclined upwards; and / or, Along the flow direction of the airflow within the third air distribution channel, the bottom wall of the third air distribution channel is at least partially inclined upwards.

4. The burner according to claim 2, characterized in that, The number of air intake channels is multiple, and the multiple air intake channels are arranged sequentially at intervals along the circumference of the lower air distribution plate; The first air inlet includes multiple sub-air inlets, which are arranged sequentially at intervals along the circumference of the lower air distribution plate. The number of sub-air inlets is the same as the number of air intake channels and corresponds one-to-one.

5. The burner according to claim 2, characterized in that, The plurality of gas distribution channels also include: The first air distribution channel and the second air distribution channel are sleeved on the outside of the first air distribution channel. The first air distribution channel is located at the center of the lower air distribution plate and penetrates the lower air distribution plate along the thickness direction of the lower air distribution plate. The air inlet further includes a second air inlet, which is connected to the first air distribution channel.

6. The burner according to claim 2, characterized in that, The lower air distribution plate also defines a secondary air passage, which is located between two adjacent air distribution passages; The secondary air passage and the intake passage are arranged alternately along the circumference of the lower air distribution plate.

7. The burner according to claim 6, characterized in that, Also includes: The upper air distribution plate is sheet-shaped and covers the lower air distribution plate. The upper air distribution plate has an air outlet channel that is connected to the air distribution channel. The number of air outlet channels is the same as the number of air distribution channels and they correspond one-to-one.

8. The burner according to claim 7, characterized in that, The upper gas separator also includes: A grille, disposed at at least one of the air outlet channels, to guide the airflow out of the air distribution channel; and / or, The upper air distribution plate is also provided with an air outlet, which is connected to the secondary air channel. The number of air outlets and the number of secondary air channels are the same and correspond one-to-one.

9. The burner according to claim 7, characterized in that, The upper air distribution plate and the lower air distribution plate are detachably connected.

10. The burner according to any one of claims 1 to 9, characterized in that, Also includes: The ejector tubes are connected to the air inlets, and the number of ejector tubes is the same as the number of air inlets, with each tube corresponding to the other.

11. A gas stove, characterized in that, Includes the burner as described in claim 10.

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