Fire cap for a burner and gas hob

Abstract

This application relates to the field of gas stove technology, and discloses a burner cap for a burner and a gas stove. The burner includes a gas distribution cap, with the burner cap positioned above the gas distribution cap. The burner cap includes: a top wall, which is annular; an inner side wall, located below the top wall; and an outer side wall, located outside the inner side wall and below the top wall. The top wall, inner side wall, and outer side wall together define a mixing chamber. The burner cap also has a flame transfer groove that sequentially penetrates the inner side wall, top wall, and outer side wall, and is connected to the mixing chamber. A gas distribution section is located on the inner wall surface of the top wall, and is adapted to cooperate with the gas distribution mating part of the gas distribution cap to divide the mixing chamber into an inner mixing chamber and an outer mixing chamber. The flame transfer groove penetrates part of the gas distribution section. A sealing protrusion is located at the gas distribution section corresponding to the flame transfer groove and extends downward. The sealing protrusion can fit against the gas distribution mating part of the gas distribution cap to achieve a radial seal between the burner cap and the gas distribution cap at the flame transfer groove. This prevents air from mixing between the inner and outer mixing chambers.

Description

Technical Field

[0001] This application relates to the field of gas stove technology, for example to a burner cap for a burner and a gas stove. Background Technology

[0002] Most existing burner caps have a single ring of flame outlets. Multi-ring burners require multiple burner caps to create multiple rings of flame. For example, two burner caps create a double ring of flame, and three burner caps create a triple ring of flame.

[0003] In related technologies, when the mixing chamber of a flame cap is divided into inner and outer mixing chambers, the inner and outer mixing chambers need to be sealed to prevent cross-contamination of gas between the two chambers. Existing flame caps generally have a flame transfer groove for flame transfer.

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

[0005] The sealing effect of the inner and outer mixing chambers at the ignition channel is poor, and the two mixing chambers are prone to cross-contamination at the ignition channel, which affects the ignition effect of the burner. 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 burner cap and a gas stove for a burner to improve the sealing effect of the inner and outer mixing chambers at the flame transfer groove.

[0008] According to a first aspect of the present invention, a flame cap for a burner is provided. The burner includes a gas distribution cap, and the flame cap is disposed above the gas distribution cap. The flame cap includes: a top wall, which is annular; an inner side wall, which is annular and located below the top wall; and an outer side wall, which is annular and located outside the inner side wall and below the top wall. The top wall, the inner side wall, and the outer side wall together define a mixing chamber. The flame cap also has a flame transfer groove that sequentially penetrates the inner side wall, the top wall, and the outer side wall. The outer wall, and the flame transfer groove is connected to the mixing chamber; the gas distribution section is provided on the inner wall surface of the top wall, and the gas distribution section is adapted to cooperate with the gas distribution mating part of the gas distribution cover to divide the mixing chamber into an inner mixing chamber and an outer mixing chamber, and the flame transfer groove penetrates the gas distribution section; the sealing protrusion is provided at the gas distribution section corresponding to the flame transfer groove and extends downward, and the sealing protrusion can fit with the gas distribution mating part of the gas distribution cover to achieve radial sealing between the flame cover and the gas distribution cover at the flame transfer groove.

[0009] According to a second aspect of the present invention, a gas stove is provided, including a burner, the burner including the burner cap described above.

[0010] The burner cap and gas stove provided in this disclosure can achieve the following technical effects:

[0011] The gas distribution section can divide the mixing chamber into an inner mixing chamber and an outer mixing chamber. The sealing protrusion is located at the gas distribution section corresponding to the flame transfer groove. The sealing protrusion can achieve radial sealing with the gas distribution section, thereby preventing cross-contamination between the inner and outer mixing chambers. This arrangement can adjust the gas supply to the two mixing chambers of the burner, which in turn facilitates the adjustment of the combustion of the flame holes on the inner and outer sides of the burner, increasing the burner's ignition flexibility and ignition effect.

[0012] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0013] 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:

[0014] Figure 1 This is a schematic diagram of the structure of an upper air intake burner provided in an embodiment of this disclosure;

[0015] Figure 2 This is a schematic diagram of the structure of an outer flame cap from one perspective, provided in an embodiment of this disclosure;

[0016] Figure 3 This is a structural schematic diagram of an outer flame cap provided in an embodiment of this disclosure from another perspective;

[0017] Figure 4 yes Figure 3 A magnified structural diagram of part A in the middle;

[0018] Figure 5 This is a schematic diagram of the structure of a fire cover from one perspective, provided in an embodiment of this disclosure;

[0019] Figure 6 This is a structural schematic diagram of a mid-fire cover provided in an embodiment of this disclosure from another perspective;

[0020] Figure 7 yes Figure 6 A magnified structural diagram of part B in the middle section;

[0021] Figure 8 This is a schematic diagram of the structure of a gas distribution cover from one perspective, provided in an embodiment of this disclosure;

[0022] Figure 9 This is a structural schematic diagram of a gas distribution cover provided in an embodiment of this disclosure from another perspective;

[0023] Figure 10 This is a schematic diagram of the structure of a gas distribution seat from one perspective, provided in an embodiment of this disclosure;

[0024] Figure 11 This is a schematic diagram of the structure of a gas distribution seat from another perspective, provided in an embodiment of this disclosure;

[0025] Figure 12 This is a schematic diagram of the structure of a base provided in an embodiment of this disclosure;

[0026] Figure 13 This is a schematic diagram of the mating structure of a base and a liquid receiving tray provided in an embodiment of this disclosure;

[0027] Figure 14 This is a structural schematic diagram of an upper air intake burner provided in an embodiment of this disclosure from another perspective;

[0028] Figure 15 This is an exploded structural diagram of an upper air intake burner provided in an embodiment of this disclosure;

[0029] Figure 16 This is a cross-sectional schematic diagram of the mating structure of a flame cap and a gas distribution cap provided in an embodiment of this disclosure;

[0030] Figure 17 This is a cross-sectional structural diagram of an upper air intake burner provided in an embodiment of this disclosure.

[0031] Figure label:

[0032] 10. Outer flame cap; 101. Third mixing chamber; 102. Fourth flame hole; 1021. First flame hole group; 103. Fifth flame hole; 1031. First flame stabilizing groove; 104. First groove of outer flame cap; 1041. Outer ring outer mixing chamber; 1042. Outer ring inner mixing chamber; 105. First sealing protrusion; 1051. Through groove; 106. First flame transfer groove; 107. Drill hole; 108. First outer side wall; 20. Middle flame cap; 201. Second mixing chamber; 202. Second flame hole; 2021. Second flame hole group; 203. Third flame hole; 2031. Second flame stabilizing groove; 204. First groove of middle flame cap; 2041. Middle ring outer mixing chamber; 2042. Middle ring inner mixing chamber; 205. Second sealing protrusion; 206. 2061. Second flame transfer groove; 2062. Flame transfer hole; 2063. Gathering groove; 2064. First groove-shaped channel; 2065. Straight through hole; 207. Second outer side wall; 30. Inner flame cover; 301. First flame hole; 40. Gas distribution cover; 401. First gas distribution channel; 4011. First gas distribution plate; 4012. Outer ring outer gas distribution channel; 4013. Outer ring inner gas distribution channel; 402. Second gas distribution channel; 4021. Second gas distribution plate; 4022. Middle ring outer gas distribution channel; 4023. Middle ring inner gas distribution channel; 403. Skirt; 4031. First limiting protrusion; 4032. Second limiting protrusion; 4033. Second arc-shaped surface; 404. First screw hole; 4041. Partition mating part; 405. Third gas distribution channel; 406. First protrusion; 4061. First protrusion of the first air distribution channel; 4062. First protrusion of the second air distribution channel; 407. Exhaust grille; 4071. First exhaust grille; 4072. Second exhaust grille; 4073. First grille section; 4074. Second grille section; 4075. Third exhaust grille; 4076. Fourth exhaust grille; 4077. Third grille section; 4078. Fourth grille section; 4079. Stepped structure; 408. Grille hole; 4081. Bottom wall of the air distribution channel; 4082. Second inclined surface; 409. Bottom wall; 4091. Inner ring wall; 4092. Outer ring wall; 4093. First upper ejector channel; 4094. Second upper ejector channel; 4095. Third upper ejector channel ; 4096, Second groove-shaped channel; 50, Air distribution seat; 501, Outer ring air outlet channel; 5011, First air outlet channel; 5012, Second air outlet channel; 502, Middle ring air outlet channel; 5021, Third air outlet channel; 5022, Fourth air outlet channel; 503, Ejector; 5031, First ejector; 5032, First lower ejector channel; 5033, Second ejector; 5034, Second lower ejector channel; 5035, Third ejector; 5036, Third lower ejector channel; 504, Baffle; 5041, Secondary air flow channel; 505, Reinforcing rib; 506, Partition section; 5061, First partition section; 5062, Second partition section; 507, Bottom wall of the air outlet channel; 5071, First inclined surface;508. First body; 5081. Second body; 509. Limiting hole; 5091. Second screw hole; 5092. Support column; 6. Base; 601. Gas outlet; 602. First through hole; 6024. Nozzle; 603. Limiting mating part; 6031. Side profile; 6032. First arc-shaped surface; 6033. Limiting column; 604. Support surface; 605. Second connecting hole; 606. Base body; 70. Liquid receiving tray; 702. Plug cap; 80. Flame cap; 801. Outer wall; 8011 8011. Outer flame hole; 8012. Third wall section; 8013. Fourth wall section; 802. Inner wall; 8021. Inner flame hole; 8022. First wall section; 8023. Second wall section; 803. Top wall; 804. Mixing chamber; 8041. Inner mixing chamber; 8042. Outer mixing chamber; 805. Flame transfer groove; 806. First main flame hole; 8061. First flame stabilizing hole; 8062. Second main flame hole; 8063. Second flame stabilizing hole; 8071. First step; 8072. Second step. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Unless otherwise stated, the term "multiple" means two or more.

[0038] 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.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0040] Combination Figures 1 to 17As shown, this embodiment of the present disclosure provides an upper-inlet burner, which is mounted on a panel. The upper-inlet burner (hereinafter collectively referred to as the burner) includes a flame cap and an ejector 503, with the ejector 503 located above the panel. The primary and secondary air of the upper-inlet burner both originate from above the panel. A flame cap 80 defines a mixing chamber 804 with flame holes. Multiple flame caps 80 are provided, including an inner flame cap 30, a middle flame cap 20, and an outer flame cap 10 arranged sequentially from the inside out. The inner flame cap 30 defines a first mixing chamber and has a first flame hole 301 communicating with the first mixing chamber. The middle flame cap 20 defines a second mixing chamber 201 and has a second flame hole 202 and a third flame hole 203 communicating with the second mixing chamber 201. The second flame hole 202 is located inside the third flame hole 203. The outer flame cap 10 defines a third mixing chamber 101 and has a fourth flame hole 102 and a fifth flame hole 103 communicating with the third mixing chamber 101. The fourth flame hole 102 is located inside the fifth flame hole 103. The flame cap is located above the ejector 503, and the outlet of the ejector 503 is connected to the mixing chamber 804 of each flame cap to supply fuel gas to the flame cap. The mixing chamber 804 includes a first mixing chamber, a second mixing chamber 201, and a third mixing chamber 101. The flame holes include the aforementioned first flame hole 301, second flame hole 202, third flame hole 203, fourth flame hole 102, and fifth flame hole 103.

[0041] In this embodiment, the burner can form a five-ring flame through the inner flame cap 30, the middle flame cap 20 and the outer flame cap 10, which increases the flame area of ​​the burner's flame caps and further improves the uniformity of the flame intensity, ensuring the uniformity of the burner's heating of the cookware.

[0042] Optionally, there may be multiple ejectors 503, and the number of ejectors 503 is the same as the number of flame caps.

[0043] In this embodiment, each burner cap is connected to the ejector 503 to ensure the gas supply to each burner cap and to make the gas supply to each burner cap independent, enabling multiple types of flame and improving the flexibility of the burner. For example, as... Figure 9 As shown, there are three ejectors 503, including a first ejector 5031, a second ejector 5033, and a third ejector 5035.

[0044] Optionally, such as Figure 12 As shown, the upper air intake burner also includes a base 60, which is located below the ejector 503. The base 60 defines an air intake channel, which is connected to the inlet of the ejector 503. The number of air intake channels is the same as the number of ejectors 503 and they correspond one-to-one.

[0045] In this embodiment, the base 60 supports the ejector 503 and the flame cap 80, positioning the ejector 503 above the panel and allowing a gap between the ejector 503 and the panel to facilitate the supply of primary and secondary air. The base 60 defines an air intake passage to facilitate the transfer of municipal gas or gas from a gas tank to the ejector 503.

[0046] For example, when there are three ejectors 503, there are three air intake channels, including a first air intake channel, a second air intake channel, and a third air intake channel. The outlet of the first air intake channel is connected to the inlet of the first ejector 5031, the outlet of the second air intake channel is connected to the inlet of the second ejector 5033, and the outlet of the third air intake channel is connected to the inlet of the third ejector 5035.

[0047] Optionally, each air intake channel includes a first through hole 602, a second through hole, and a first channel connecting the first through hole 602 and the second through hole. The first through hole 602 is located below the second through hole. The first channel extends vertically, with the first through hole 602 facing outwards and the second through hole facing inwards. The second through hole communicates with the inlet of the ejector 503; that is, the second through hole is the outlet of the air intake channel, and the first through hole 602 is the inlet of the air intake channel. The burner also includes nozzles 6024, which are located at the second through holes. The number of second through holes is the same as the number of air intake channels, and they correspond one-to-one. The number of nozzles 6024 is the same as the number of second through holes, and they correspond one-to-one.

[0048] Optionally, such as Figure 10 As shown, when the ejector 503 is linear, the axis of the nozzle 6024 is coaxial with the axis of the ejector 503 along the axial direction of the nozzle 6024. This ensures the stability of the combustion system, the effectiveness of primary air ejection, reduces flue gas emissions, and guarantees the combustion efficiency of the burner.

[0049] Optionally, the nozzle 6024 may be connected to the inlet of the ejector 503 or there may be a gap between them. When the nozzle 6024 is separated from the inlet of the ejector 503, that is, the nozzle 6024 does not contact the ejector 503. This coaxial arrangement ensures the ejection capability of the ejector 503 and increases the amount of primary air ejected.

[0050] Optionally, the nozzle 6024 is threadedly connected to the second through hole. The outer wall of the first through hole 602 is provided with external threads to facilitate connection with an external gas pipeline.

[0051] To facilitate processing, a third through hole can be provided at the bottom of the base 60. After the first channel is set through the third through hole, a sealing element is then set at the third through hole to seal the third through hole.

[0052] Optionally, the burner also includes a valve body, which is connected to the inlet of multiple bleed air passages for adjusting the intake air volume of each bleed air passage.

[0053] In this embodiment, the valve body has multiple channels inside, the number of which is the same as the number of bleed air channels and they correspond one-to-one. The valve body also has a switch, which can control the opening and closing of each channel, thereby controlling the connection and disconnection between the bleed air channel and the ejector 503.

[0054] For example, the valve body is a three-way valve body. The valve body's switch is linked to a button located outside the burner. The user can adjust the opening and closing of each channel within the valve body by operating the button. For instance, in practical applications, when the knob is rotated to 90°, the burner is in ignition mode, and all three channels are fully open. When rotated to the final angle (e.g., 180°, 230°, 270°), only one channel is open. When rotated to an angle between 90° and the final angle, two channels are open. When rotated between 0° and 90°, all three channels are fully open, but the flow rate is relatively low.

[0055] With the configuration of three ejectors 503, valve body, and three burner caps, the top-inlet burner can not only achieve a three-burner cap, five-ring flame configuration, but also adjust the gas flow of each ejector 503, thereby adjusting the flame size of the five flame holes on the three burner caps and thus adjusting the burner's flame delivery flexibility.

[0056] Optionally, such as Figures 8 to 11 and Figure 15 As shown, the burner also includes a gas distribution assembly, which includes a gas distribution cover 40 and a gas distribution seat 50. The gas distribution cover 40 and the gas distribution seat 50 together define a gas passage and an ejector 503. The gas passage has a gas inlet that connects to the outlet of the ejector 503 and the gas passage. The upper end of the gas distribution cover 40 defines the gas distribution passage and the gas outlet, allowing the gas in the gas passage to flow into the gas distribution passage through the gas outlet. A flame cap is positioned above the gas distribution passage. The number of gas distribution passages is the same as the number of flame caps and they correspond one-to-one. This can be understood as follows: the gas distribution passage connects the outlet of the ejector 503 and the mixing chamber 804 through the gas passage. In other words, the gas or a mixture of gas and air (hereinafter collectively referred to as gas) flows sequentially through the gas inlet passage, ejector 503, gas inlet, gas passage, gas outlet, gas distribution passage, and mixing chamber 804 before exiting through the flame holes of the flame cap.

[0057] In this embodiment, the gas distribution cover 40 and the gas distribution seat 50 together enclose the gas passage and the ejector 503, so as to provide gas to the burner cap and save the size of the burner. The gas distribution passage diverts the gas flowing out of the gas passage and then delivers the diverted gas to the burner cap, thereby realizing the connection between the ejector 503 and the burner cap.

[0058] The mixing chamber 804 is located above the gas distribution channel. The mixing chamber 804 is connected to the gas distribution channel and together they form a mixing cavity. The mixing cavity ensures that the gas in the gas distribution channel does not leak out, so that it flows normally into the mixing chamber 804, and then flows out through the burner holes of the burner cap to facilitate combustion of the burner cap.

[0059] In the case of three burner caps, the gas distribution channels include a first gas distribution channel 401, a second gas distribution channel 402, and a third gas distribution channel 405, arranged sequentially from the inside out. A third mixing chamber 101 is connected to and located above the third gas distribution channel 405, and the third mixing chamber 101 and the third gas distribution channel 405 together form an outer ring mixing chamber. A second mixing chamber 201 is connected to and located above the second gas distribution channel 402, and the second mixing chamber 201 and the second gas distribution channel 402 together form a middle ring mixing chamber. A first mixing chamber is connected to and located above the first gas distribution channel 401, and the first mixing chamber and the first gas distribution channel 401 together form an inner ring mixing chamber.

[0060] Optionally, such as Figure 17 As shown, the inner wall of the air distribution cover 40 is provided with a limiting part, and the outer wall of the base 60 is provided with a limiting mating part 603. When the limiting part and the limiting mating part 603 are engaged, the air distribution cover 40 and the base 60 are restricted from rotating.

[0061] In this embodiment, the rotation between the gas distribution cover 40 and the base 60 is restricted, which can prevent the gas distribution assembly from rotating, thereby ensuring the coaxiality of the ejector 503 and the nozzle 6024.

[0062] Optionally, such as Figure 14 As shown, the vent cover 40 includes a vent cover body and a skirt 403. The vent cover body covers the vent seat 50, and the skirt 403 is located on the outer side of the vent cover body and extends circumferentially along the vent cover body. The skirt 403 is at least partially inclined downwards in the direction from the inside out. In this embodiment, the skirt 403 can prevent cooking liquids from flowing below the vent seat 50 and can guide the liquids to a supporting device, such as a drip tray 70.

[0063] Optionally, such as Figure 12 As shown, the base 60 includes a base body 606 and an air outlet 601. The air outlet 601 is located above the base body 606 and on one side of the inlet of the ejector tube 503. The nozzle 6024 is provided in the air outlet 601. The skirt 403 extends downward and is fitted onto the outer side of part of the base 60. The inner wall of the skirt 403 is provided with a limiting part, and the outer wall of the air outlet 601 is provided with a limiting fitting part 603.

[0064] In this embodiment, the lower end face of the gas distributor cover 40 is connected to the upper end face of the gas distributor base 50 to form a gas passage and an ejector 503. The skirt base 403 can extend downward to the base 60, and the gas outlet 601 is located at the upper end of the base 60 and on one side of the ejector 503, thereby facilitating the setting of the limiting part and the limiting mating part 603 to realize the restricted rotation between the gas distributor cover 40 and the base 60.

[0065] Optionally, such as Figure 9 and Figure 17 As shown, the limiting part includes a first limiting protrusion 4031, which protrudes from the inner wall surface of the air distribution cover 40; the limiting mating part 603 includes a side surface 6031, which is located at at least one end of the outer wall surface of the air outlet 601 along its circumference; wherein, when the limiting part and the limiting mating part 603 are mated, the first limiting protrusion 4031 and the side surface 6031 are arranged sequentially along the circumference of the air outlet 601, and the first limiting protrusion 4031 is in contact with the side surface 6031.

[0066] In this embodiment, the first limiting protrusion 4031 is in contact with the side surface 6031 of the air outlet 601, which can restrict the air distribution cover 40 from rotating circumferentially relative to the base 60, thereby making the air distribution assembly have no degree of freedom to rotate circumferentially.

[0067] Optionally, the limiting part further includes a second limiting protrusion 4032, which protrudes from the inner wall surface of the air distribution cover 40 and is sequentially spaced from the first limiting protrusion 4031 along the circumference of the air distribution cover 40. The length of the second limiting protrusion 4032 is less than the length of the first limiting protrusion 4031. When the limiting part and the limiting mating part 603 are engaged, the second limiting protrusion 4032 is located above the air outlet 601 and abuts against the upper wall surface of the air outlet 601. The limiting mating part 603 includes the upper wall surface of the air outlet 601.

[0068] In this embodiment, the second limiting protrusion 4032, together with the first limiting protrusion 4031, restricts the rotation of the air distribution cover 40 relative to the base 60, and also plays a positioning role to facilitate the installation of the air distribution assembly and the base 60.

[0069] Optionally, the limiting part further includes a first arc-shaped surface 6032, which is located on the inner wall surface of the air distribution cover 40; the limiting mating part 603 further includes a second arc-shaped surface 4033, which is located on the outer wall surface of the air outlet 601 facing the air distribution cover 40; when the limiting part and the limiting mating part 603 are engaged, the first arc-shaped surface 6032 and the second arc-shaped surface 4033 are in contact.

[0070] In this embodiment, the first arc-shaped surface 6032 and the second arc-shaped surface 4033 are in contact with each other, so that the gas distribution component cannot move radially relative to the base 60, thus the gas distribution component has no degrees of freedom in the front-back, left-right and right directions.

[0071] For example, such as Figure 9 As shown, the first limiting protrusion 4031, the second limiting protrusion 4032, and the second arc-shaped surface 4033 are all provided on the inner wall surface of the skirt base 403.

[0072] Optionally, such as Figure 12 As shown, the upper surface of the base body 606 is provided with a support surface 604, and the lower surface of the air distribution seat 50 is provided with a support column 5092. When the air distribution component is placed above the base 60, the support surface 604 and the support column 5092 abut against each other to achieve positioning and engagement between the air distribution component and the base 60. In this embodiment, the engagement of the support surface 604 and the support column 5092 facilitates the installation and positioning of the base 60 and the air distribution seat 50, thereby facilitating the installation of the air distribution component on the base 60.

[0073] Optionally, there may be multiple support surfaces 604, and the number of support columns 5092 is the same as the number of support surfaces 604 and corresponds one-to-one. For example, as shown... Figure 12 As shown, there are two support surfaces 604 and two support columns 5092. Specifically, the two support surfaces 604 are located on the same straight line to facilitate the cooperation between the support columns 5092 and the support surfaces 604.

[0074] Optionally, the gas distribution seat 50 has a limiting hole 509 extending through its thickness direction, and the upper surface of the base 60 body 606 is provided with a limiting post 6033. When the gas distribution assembly is located above the base 60, the limiting post 6033 is located within the limiting hole 509. In this embodiment, by passing the limiting post 6033 through the limiting hole 509, the limiting post 6033 can restrict rotation within the limiting hole 509, thereby restricting the rotation of the gas distribution seat 50 relative to the base 60.

[0075] Optionally, the inner diameter of the limiting hole 509 is 0.3mm-0.5mm larger than the outer diameter of the limiting post 6033. This ensures that the limiting post 6033 can be inserted into the limiting hole 509, while also restricting its rotation. Specifically, the inner diameter of the limiting hole 509 can be 0.3mm, 0.4mm, or 0.5mm larger than the outer diameter of the limiting post 6033.

[0076] Optionally, there may be multiple limiting posts 6033, and the number of limiting holes 509 may be the same as the number of limiting posts 6033 and correspond one-to-one.

[0077] Optionally, the burner also includes a thermocouple and an ignition needle, and at least two limiting posts 6033 are provided with through holes. The thermocouple and / or ignition needle pass through the through holes of the limiting posts 6033 and then through the limiting holes 509, thereby cooperating with the burner cap to extinguish and / or ignite.

[0078] Optionally, the air distribution cover 40 and the air distribution seat 50 can be detachably connected or fixedly connected. A detachable connection facilitates the installation, removal, and cleaning of the air distribution cover 40 and the air distribution seat 50. A fixed connection facilitates the removal of the air distribution cover 40 and the air distribution seat 50 and increases structural stability.

[0079] When the air distribution cover 40 and the air distribution plate are detachably connected, the outer peripheral wall of the air distribution cover 40 body is provided with a first screw hole 404, and the outer peripheral wall of the air distribution seat 50 is provided with a second screw hole 5091. The first screw hole 404 and the second screw hole 5091 correspond to each other. A first fastener passes through the first screw hole 404 and the second screw hole 5091 to connect the air distribution cover 40 and the air distribution seat 50. The upper end of the skirt 403 is located above the first screw hole 404, and the lower end of the skirt 403 extends to the outside of the first screw hole 404, or the lower end of the skirt 403 extends to the outside of the second screw hole 5091.

[0080] In this embodiment, the gas distribution seat 50 and the gas distribution cover 40 are connected by screws, which facilitates the installation, disassembly, and cleaning of the gas distribution seat 50 and the gas distribution cover 40. The skirt 403 can cover the screw holes to increase the aesthetics of the burner and prevent soup from flowing into the screw holes and affecting their use.

[0081] Optionally, there are multiple first screw holes 404, which are arranged sequentially at intervals along the circumference of the air distribution cover 40. The number of second screw holes 5091 is the same as the number of first screw holes 404 and corresponds one-to-one, so as to strengthen the connection between the air distribution cover 40 and the air distribution plate.

[0082] Optionally, such as Figure 13 The burner shown also includes a liquid receiving plate 70, which is located between the gas distribution seat 50 and the base 60. There is a gap between the gas distribution seat 50 and the liquid receiving plate 70 to facilitate air flow. The liquid receiving plate 70 is provided with a clearance hole (hereinafter referred to as the first clearance hole for easy distinction). The upper end of the air intake channel passes through the first clearance hole and is connected to the ejector 503.

[0083] In this embodiment, gas enters the gas duct of the base 60 from below the panel through a pipe, and the base 60 supports the ejector 503 at a certain distance from the panel. The drip tray 70 is used to collect soup from the pot, and the clearance hole of the drip tray 70 facilitates the alignment and communication between the outlet of the gas duct and the inlet of the ejector 503.

[0084] Optionally, the liquid receiving tray 70 is also provided with a first connecting hole, and the base 60 is provided with a second connecting hole 605. The second fastener passes through the first connecting hole and the second connecting hole 605 to realize the connection between the liquid receiving tray 70 and the base 60. Optionally, the liquid receiving tray 70 is in close contact with the base 60, and there is a gap between the liquid receiving tray 70 and the lower surface of the gas distribution seat 50 to facilitate the flow of air into the burner.

[0085] Optionally, such as Figure 13 As shown, the burner also includes a plug cap 702, which is adapted to the first connection hole. When the liquid receiving plate 70 is separated from the base 60, the plug cap 702 can cover the first connection hole.

[0086] In this embodiment, after the gas distribution assembly and the burner cap assembly are removed, the first connecting hole of the liquid receiving tray 70 is provided with a plug cap 702, which can prevent oil stains from reaching the screw position and making it difficult to clean.

[0087] The liquid receiving tray 70 also has a second clearance hole, through which the support surface 604 of the base 60 extends above the liquid receiving tray 70 and abuts against the support column 5092. For example, as... Figure 13 As shown, there are three first connection holes and three plug caps 702. After the gas distribution assembly and the burner cap are removed, the upper surface of the liquid receiving tray 70 has only five protrusions (three plug caps 702 and two support surfaces 604), the ignition needle and thermocouple, and the gas outlet 601, making it easy to clean.

[0088] Optionally, the burner cap also includes a gas distribution section, and the gas distribution cap includes a gas distribution mating section that cooperates with the gas distribution section. When the gas distribution section and the gas distribution mating section cooperate, they can divide a mixing chamber into an inner mixing chamber and an outer mixing chamber.

[0089] Optionally, the burner also includes a gas distribution plate located within the mixing chamber and extending circumferentially along the mixing chamber, dividing it into an inner mixing chamber and an outer mixing chamber. The inner mixing chamber is connected to the inner flame hole 8021 of the burner cap, and the outer mixing chamber is connected to the outer flame hole 8011 of the burner cap.

[0090] In this embodiment, the gas distribution plate divides the mixing chamber into two mixing chambers, an inner and an outer one. This prevents the inner burner hole 8021 and the outer burner hole 8011 of the burner cap from competing for combustion gas, thus ensuring normal combustion of both the inner and outer burner holes 8021 and 8011. Specifically, the gas distribution plate can divide a gas distribution channel into an inner gas distribution channel and an outer gas distribution channel, and divide the mixing chamber 804 of the burner cap into an inner mixing chamber 8041 and an outer mixing chamber 8042.

[0091] Optionally, each flame cap is annular. When the flame cap is an outer flame cap 10 and / or a middle flame cap 20, each flame cap 80 includes a top wall 803, an outer wall 801, and an inner wall 802, with the top wall 803 being annular. The outer wall 801 is located below the top wall 803, is annular, and has an outer flame hole 8011. The inner wall 802 is located below the top wall 803 and inside the outer wall 801, is annular, and has an inner flame hole 8021. The inner wall 802, outer wall 801, and top wall 803 together define a mixing chamber 804. When the flame cap is an inner flame cap 30, the inner flame cap 30 includes an outer plate and a top plate, with the outer plate being annular and located below the top plate, and having a first flame hole 301.

[0092] In some optional embodiments, the flame holes of the flame cap include main flame holes and flame stabilizing holes. The flame cap is provided with main flame holes (corresponding to the first flame hole 301, second flame hole 202, third flame hole 203, fourth flame hole 102 and / or fifth flame hole 103 mentioned above) and flame stabilizing holes. There are multiple main flame holes and multiple flame stabilizing holes. Multiple main flame holes are arranged sequentially at intervals along the circumference of the flame cap. Multiple flame stabilizing holes are also arranged sequentially at intervals along the circumference of the flame cap. The outer wall surface of the side wall of the flame cap is also provided with a flame stabilizing groove. The flame stabilizing groove extends along the circumference of the flame cap. The inlet end of the flame stabilizing hole is connected to the mixing chamber 804, and the outlet end of the flame stabilizing hole is connected to the flame stabilizing groove.

[0093] In some alternative embodiments, such as Figure 6 As shown, the main ignition port includes a first main ignition port 806, and the flame stabilizing port includes a first flame stabilizing port 8061. At least two first flame stabilizing ports 8061 are provided between every two adjacent first main ignition ports 806. In this embodiment, the distance between the two first main ignition ports 806 is relatively large. Providing at least two first flame stabilizing ports 8061 between two adjacent first main ignition ports 806 can ensure sufficient gas flow at the flame stabilizing slot and prevent poor ignition.

[0094] Optionally, the flame stabilizer groove is located below the first main flame hole 806, wherein the height of the center of the first flame stabilizer 8061 is less than the height of the center of the first main flame hole 806.

[0095] In this embodiment, the center height of the first flame stabilizing hole 8061 is less than the center height of the first main flame hole 806, and the first flame stabilizing hole 8061 can stabilize the flame in the lower middle part of the first main flame hole 806.

[0096] Optionally, the number of first main burner holes 806 is 18-22. Too many first main burner holes 806 result in excessive density, causing adjacent holes to compete for air and generate flue gas. Too few first main burner holes 806 result in excessive spacing between adjacent holes, making it difficult to form a ring-shaped flame, which is detrimental to burner heating. Examples include 18, 20, or 22 first main burner holes 806.

[0097] Optionally, the number of at least two first flame stabilizing holes 8061 is 2-5. For example, the number of first flame stabilizing holes 8061 between two first main flame holes 806 is 2, 3, 4, or 5. If there are too many first flame stabilizing holes 8061, adjacent first flame stabilizing holes 8061 will compete for air, easily generating smoke. Figure 6 As shown, three first flame stabilizing holes 8061 are provided between two adjacent first main flame holes 806.

[0098] In one specific embodiment, the outer wall 801 of the flame cap is provided with a first main flame hole 806, a first flame stabilizing hole 8061, and a flame stabilizing groove. The inner wall 802 of the flame cap is provided with a group of flame holes communicating with the mixing chamber 804. The group of flame holes includes a second main flame hole 8062 and at least two second flame stabilizing holes 8063. The second flame stabilizing holes 8063 communicate with the mixing chamber 804 and the outside. Two of the at least two second flame stabilizing holes 8063 are located on both sides of the second main flame hole 8062.

[0099] In this embodiment, a second flame stabilizing hole 8063 is provided on both sides of a second main flame hole 8062. The second flame stabilizing hole 8063 stabilizes the flame of the second main flame hole 8062 from two directions, which can enhance the flame stabilizing effect of the second main flame hole 8062.

[0100] Optionally, there may be multiple groups of flame holes, which are arranged sequentially and at intervals along the circumference of the flame cap. This spacing between the multiple flame hole groups avoids competition for air, reduces flue gas concentration, and facilitates the processing of the flame cap.

[0101] In one specific embodiment, when the flame cap 80 is a medium flame cap 20, the inner sidewall 802 of the medium flame cap 20 is provided with a second flame hole group 2021, and the number of the second flame hole group 2021 is 8 to 12.

[0102] When there are more than 12 second flame hole groups 2021, adjacent second flame hole groups 2021 compete for air, which easily generates smoke. When there are fewer than 8 second flame hole groups 2021, the distance between adjacent flame hole groups is too large, resulting in uneven flame distribution on the flame cap along its ring line.

[0103] Optionally, the number of the fourth main flame holes (first flame holes 301) of the inner flame cap 30 is the same as the number of the second flame hole group 2021 of the middle flame cap 20, wherein the fourth main flame holes of the inner flame cap 30 and the flame hole group of the middle flame cap 20 are staggered. This avoids the intersection of the first and second ring flames and reduces the generated smoke.

[0104] For example, the number of the second flame hole group 2021 can be 8, 10, or 12. Correspondingly, the number of the fourth main flame holes of the inner flame cover 30 can also be 8, 10, or 12.

[0105] Optionally, the number of the first main flame hole 806 (third flame hole 203) on the outer side wall 801 of the middle flame cover 20 is the same as the number of the third main flame hole (fourth flame hole 102) on the inner side wall 802 of the outer flame cover 10. The first main flame hole 806 and the third main flame hole are staggered to avoid competition for air between them and reduce smoke generation.

[0106] For example, such as Figure 1 As shown, when the burner includes three burner caps, the outer wall 801 of the outer burner cap 10 is provided with a fifth main burner hole (fifth burner hole 103) and a first flame stabilizing groove 1031, the inner wall 802 of the outer burner cap 10 is provided with a first burner hole group 1021, the outer wall 801 of the middle burner cap 20 is provided with a first main burner hole 806 and a second flame stabilizing groove 2031, the inner wall 802 of the middle burner cap 20 is provided with a second burner hole group 2021, and the outer wall 801 of the inner burner cap 30 is provided with a fourth main burner hole.

[0107] Optionally, such as Figure 16 and Figure 17 As shown, the upper end of the gas distribution plate is connected to the lower wall of the flame cover 80 by radial sealing and end face sealing, and / or, the lower end of the gas distribution plate is connected to the upper wall of the gas distribution cover 40 by radial sealing and end face sealing.

[0108] In this embodiment, the gas distribution plate and the flame cover 80 or the gas distribution cover 40 are sealed together by a combination of radial sealing and end face sealing. This enhances the airtightness and independence of the outer and inner mixing chambers, thereby preventing cross-contamination between the inner and outer mixing chambers.

[0109] In one specific embodiment, when the upper end of the gas distribution plate is radially sealed and the lower wall of the flame cap 80 is end-face sealed, one of the upper end of the gas distribution plate and the lower wall of the flame cap 80 is provided with a first groove, and the other of the upper end of the gas distribution plate and the lower wall of the flame cap 80 is provided with a first protrusion 406 adapted to the first groove. When the first protrusion 406 is located in the first groove, the upper end of the gas distribution plate and the lower wall of the flame cap can achieve radial sealing and end-face sealing connection. One of the gas distribution part and the gas distribution mating part includes the first groove, and the other of the gas distribution part and the gas distribution mating part includes the first protrusion 406.

[0110] In this embodiment, the first protrusion 406 and the first groove have a simple structure and are easy to manufacture, realizing two cavities in a single flame cap, thereby achieving two ring flames in a single flame cap, and preventing cross-contamination between adjacent mixing cavities. Moreover, the structure of the first protrusion 406 and the first groove can achieve two radial seals and one end face seal, improving the sealing effect.

[0111] In another specific embodiment, when the lower end of the gas distributor plate and the upper wall of the gas distributor cover 40 are connected with radial and end-face sealing, one of the lower end of the gas distributor plate and the upper wall of the gas distributor cover 40 is provided with a second groove, and the other of the upper end of the gas distributor plate and the upper wall of the gas distributor cover 40 is provided with a second protrusion adapted to the second groove. When the second protrusion is located in the second groove, the lower end of the gas distributor plate and the upper wall of the gas distributor cover 40 can achieve radial and end-face sealing connection. One of the gas distributor part and the gas distributor mating part includes the second groove, and the other of the gas distributor part and the gas distributor mating part includes the second protrusion. Similarly, the structure of the second protrusion and the second groove is simple, easy to process, and has a good sealing effect. It can also realize that a single flame cover has two cavities, thereby realizing a single flame cover with two ring flames, and the two adjacent mixing cavities do not cross-flow. The structure of the second protrusion and the second groove can realize two radial seals and one end-face seal, thereby improving the sealing effect.

[0112] like Figure 8 and Figure 16 As shown, the air distribution cover 40 includes a bottom wall 409, an outer ring wall 4092, and an inner ring wall 4091. The bottom wall 409 is annular. The outer ring wall 4092 is located above the bottom wall 409 and is annular. The inner ring wall 4091 is located above the bottom wall 409 and inside the outer ring wall 4092, and is annular. The bottom wall 409, the outer ring wall 4092, and the inner ring wall 4091 together enclose an air distribution channel. The lower end of the outer ring wall 801 is constructed with a first step portion 8071, and the upper end of the outer ring wall 4092 is adapted to the first step portion 8071. And / or, the lower end of the inner ring wall 802 is constructed with a second step portion 8072, and the upper end of the inner ring wall 4091 is adapted to the second step portion 8072.

[0113] In this embodiment, the first step portion 8071 and the second step portion 8072 enable the flame cap and the gas distribution cover 40 to achieve end face sealing and one-sided radial sealing on both the inner and outer sides, thereby ensuring the sealing effect of the flame cap and the gas distribution cover 40 on both the inner and outer sides and preventing gas leakage.

[0114] Each of the second gas distribution channels 402 and the third gas distribution channel 405 is provided with the aforementioned bottom wall 409, outer ring wall 4092 and inner ring wall 4091, so that the middle flame cap 20 and the outer flame cap 10 can cooperate with the corresponding gas distribution channel to form a mixing chamber.

[0115] Optionally, when the flame cap 80 is an outer flame cap 10 and / or a middle flame cap 20, the inner wall 802 of each flame cap includes a first wall segment 8022 and a second wall segment 8023 connected to each other. The first wall segment 8022 has an inner flame hole 8021. The second wall segment 8023 is located below the first wall segment 8022. When the lower end of the inner wall 802 is constructed with a second step portion 8072, the second wall segment 8023 is constructed with a second step portion 8072. In this embodiment, the first wall segment 8022 is inclined downwards in the direction from the outside to the inside. That is, the upper surface of the first wall segment 8022 faces upwards, so that the flame outlet angle of the inner flame hole 8021 of the first wall segment 8022 is inclined upwards. This facilitates the flame outlet of the inner flame hole 8021, so that the flame at the inner flame hole 8021 can heat the pot.

[0116] Optionally, when the flame cap is an outer flame cap 10 and / or a middle flame cap 20, the outer wall 801 includes a third wall section 8012 and a fourth wall section 8013. The third wall section 8012 has an outer flame hole 8011. The fourth wall section 8013 is located below the third wall section 8012. When the lower end of the outer wall 801 is constructed with a first step portion 8071, the fourth wall section 8013 is constructed with a first step portion 8071. When the first step portion 8071 is adapted to the outer ring wall 4092, the outer wall surface of the third wall section 8012 is flush with the outer wall surface of the outer ring wall 4092. In this embodiment, when the first step portion 8071 is adapted to the outer ring wall 4092, the first step portion 8071 is located on the inner side of the outer ring wall 4092, and the third wall segment 8012 is flush with the outer wall surface of the outer ring wall 4092. This not only enables the sealing connection between the burner cap and the outer side of the gas distribution cover 40, but also increases the aesthetics and smoothness of the connection between the burner cap and the gas distribution plate.

[0117] Optionally, when the second step portion 8072 is adapted to the inner ring wall 4091, the second step portion 8072 is located inside the inner ring wall 4091. When the first step portion 8071 is adapted to the outer ring wall 4092, the first step portion 8071 is located inside the outer ring wall 4092.

[0118] Optionally, when the lower end of the gas distribution plate is connected to the upper wall of the gas distribution cover 40, the gas distribution plate is connected to the bottom wall 409 and located between the outer ring wall 4092 and the inner ring wall 4091. The gas distribution plate protrudes from the outer ring wall 4092 and the inner ring wall 4091. In this example, the gas distribution plate protrudes from the outer ring wall 4092 and the inner ring wall 4091, facilitating contact or connection between the gas distribution plate and the lower wall of the burner cover, while simultaneously achieving the separation effect of the gas distribution plate.

[0119] Optionally, there are multiple gas distribution plates, including a first gas distribution plate 4011. The first gas distribution plate 4011 is located inside the outer ring mixing chamber and extends circumferentially along the outer ring mixing chamber, dividing the outer ring mixing chamber into a first mixing chamber and a second mixing chamber. The first mixing chamber is located outside the second mixing chamber. The first mixing chamber is connected to the fifth burner hole 103, and the second mixing chamber is connected to the fourth burner hole 102. The outer mixing chamber includes the first mixing chamber, the inner mixing chamber includes the second mixing chamber, the outer burner hole 8011 includes the fifth burner hole 103, and the inner burner hole 8021 includes the fourth burner hole 102. The arrangement of the first gas distribution plate 4011 divides the outer burner cap 10 into two independent cavities, thereby preventing the fourth burner hole 102 and the fifth burner hole 103 from competing for fuel gas.

[0120] The first gas distribution plate 4011 divides the third gas mixing chamber 101 into an outer ring outer gas mixing chamber 1041 and an outer ring inner gas mixing chamber 1042, which are arranged sequentially from the outside to the inside. The first gas distribution plate 4011 also divides the third gas distribution channel 405 into an outer ring outer gas distribution channel 4012 and an outer ring inner gas distribution channel 4013, which are arranged sequentially from the outside to the inside.

[0121] Optionally, such as Figure 16 As shown, the multiple gas distribution plates also include a second gas distribution plate 4021, located within the middle ring mixing chamber and extending circumferentially along the middle ring mixing chamber to divide the middle ring mixing chamber into a third mixing chamber and a fourth mixing chamber. The third mixing chamber is located outside the fourth mixing chamber. The third burner 203 is connected to the third mixing chamber, and the second burner 202 is connected to the fourth mixing chamber. The outer mixing chamber includes the third mixing chamber, the inner mixing chamber includes the fourth mixing chamber, the outer burner 8011 includes the third burner 203, and the inner burner 8021 includes the second burner 202. The arrangement of the first gas distribution plate 4011 divides the middle burner cap 20 into two independent chambers, thereby preventing the second burner 202 and the third burner 203 from competing for fuel gas.

[0122] The second air distribution plate 4021 divides the second mixing chamber 201 into an outer middle ring mixing chamber 2041 and an inner middle ring mixing chamber 2042, which are arranged sequentially from the outside to the inside. The second air distribution plate 4021 also divides the second air distribution channel 402 into an outer middle ring air distribution channel 4022 and an inner middle ring air distribution channel 4023, which are arranged sequentially from the outside to the inside.

[0123] Optionally, the outlet of the first ejector 5031 is connected to the first mixing chamber, and the outlet of the second ejector 5033 is connected to the second mixing chamber. The outlet of the first ejector 5031 is connected to the third mixing chamber, and the outlet of the second ejector 5033 is connected to the fourth mixing chamber. The outlet of the third ejector 5035 is connected to the inner ring mixing chamber.

[0124] This can be understood as follows: the first ejector 5031 supplies gas to the first and third mixing chambers, and the second ejector 5033 supplies gas to the second and fourth mixing chambers. This arrangement, with one ejector 503 simultaneously supplying gas to the two mixing chambers of the two burners, facilitates simultaneous adjustment of the gas supply to both mixing chambers. Furthermore, it allows for the convenient arrangement of three ejectors 503, three burners, and the gas distribution assembly, facilitating the formation of a five-ring flame pattern in the burner.

[0125] Optionally, the flame cover is also provided with a flame transfer groove 805, which passes through the inner wall 802, the top wall 803 and the outer wall 801 in sequence. The flame transfer groove 805 opens upward and is connected to the mixing chamber 804.

[0126] In this embodiment, the flame cover can be an outer flame cover 10 or a middle flame cover 20. When the flame cover is a middle flame cover 20, the middle flame cover 20 is provided with a first flame transfer groove 106, which is used to transfer flame between the second and third ring flames. When the flame cover is an outer flame cover 10, the outer flame cover 10 is provided with a second flame transfer groove 206, which is used to transfer flame between the fourth and fifth ring flames.

[0127] Optionally, such as Figures 2 to 6 As shown, when the flame cover is provided with a first groove and the gas distribution cover 40 is provided with a first protrusion 406, the flame cover also includes a sealing protrusion. The sealing protrusion is provided at least one groove wall of the first groove corresponding to the flame transmission groove 805, and the sealing protrusion extends downward. When the flame cover is placed on the gas distribution cover 40, the sealing protrusion can fit with the first protrusion 406 to achieve radial sealing between the flame cover and the gas distribution cover 40 at the flame transmission groove 805.

[0128] In this embodiment, the sealing protrusion can increase the sealing effect of the inner and outer mixing chambers, and prevent gas leakage between the inner and outer mixing chambers at the fire transfer groove 805.

[0129] Optionally, the flame transfer groove 805 penetrates the groove wall of the first groove, and a through groove 1051 is provided at the upper end of the sealing protrusion, which is connected to the flame transfer groove 805. This can prevent the first groove and the sealing protrusion from blocking the flame transfer channel of the flame transfer groove 805, so as to ensure the flame transfer stability of the flame transfer groove 805.

[0130] Optionally, such as Figure 16 As shown, two opposite sidewalls of the fire transfer groove 805 are provided with drill holes 107. One end of the drill hole 107 is connected to the first outer mixing chamber 8042, and the other end of the drill hole 107 is closed. The outer mixing chamber 8042 includes an outer ring mixing chamber 1041. The drill hole 107 is inclined upward along the direction from the inside to the outside.

[0131] In this embodiment, the borehole 107 causes the gas in the outer ring mixing chamber 1041 to tend to flow outward, which can increase the ignition transmission performance of the ignition channel 805. Without the borehole 107, the gas mainly flows vertically upward through the flame stabilizing channel and crosses outward, affecting the ignition transmission performance of the ignition channel 805.

[0132] Optionally, when the flame cap is an outer flame cap 10, the outer side wall 801 includes a first outer side wall 108. The first outer side wall 108 also has a first flame stabilizing hole 8061 and a first flame stabilizing groove 1031. The inlet end of the first flame stabilizing hole 8061 is connected to the outer ring mixing chamber 1041, and the outlet end of the first flame stabilizing hole 8061 is connected to the first flame stabilizing groove 1031. The first flame stabilizing groove 1031 is connected to the outside. The drill hole 107 is located above the first flame stabilizing hole 8061.

[0133] The inner end of the borehole 107 is located above the first flame stabilizing hole 8061 and below the flame transfer groove 805, which can increase the depth of the borehole 107 and thus increase the ability of the borehole 107 to guide the gas flow.

[0134] Optionally, the first flame stabilizing hole 8061 is inclined upward in the direction from the inside to the outside, wherein the inclination angle of the first flame stabilizing hole 8061 is greater than the inclination angle of the drill hole 107.

[0135] In this embodiment, the inclination angle of the drill hole 107 is smaller than that of the flame stabilizing hole, so that the gas guided by the drill hole 107 can flow out from the outer end of the flame transfer groove 805, and prevent the flame from leaving the outer end of the flame transfer groove 805, thereby ensuring that the flame of the flame transfer groove 805 can be stably transferred to the main fire hole and the flame stabilizing groove.

[0136] Optionally, the first outer side wall 108 is also provided with a fifth flame hole 103. The diameter of the drill hole 107 is smaller than the diameter of the fifth flame hole 103, but larger than the diameter of the first flame stabilizing hole 8061. This ensures the air intake of the drill hole 107, thereby ensuring the amount of combustion gas guided by the drill hole 107, and also avoids competition for combustion gas with the fifth flame hole 103 adjacent to the drill hole 107, thus ensuring the flame combustion of the fifth flame hole 103 adjacent to the drill hole 107.

[0137] Optionally, when the flame cap is a medium flame cap 20, the outer wall 801 includes a second outer wall 207, the second outer wall 207 is provided with a second sealing protrusion 205, the second sealing protrusion 205 and the second outer wall 207 are integral structures, the second outer wall 207 is provided with a second flame stabilizing groove 2031, the bottom of the second sealing protrusion 205 is provided with a second flame stabilizing hole 8063, the inlet end of the second flame stabilizing hole 8063 is connected to the outer mixing chamber 2041 of the middle ring, the outlet end of the second flame stabilizing hole 8063 is connected to the second flame stabilizing groove 2031, and the outer mixing chamber 8042 includes the outer mixing chamber 2041 of the middle ring.

[0138] In this embodiment, a second flame stabilizing hole 8063 is provided at the second sealing protrusion 205, which can ensure that the second flame stabilizing groove 2031 corresponding to the second sealing protrusion 205 can be connected to the outer mixing chamber 2041 of the middle ring, so as to improve the uniformity of flame output of the flame cap.

[0139] Optionally, a third flame hole 203 is provided at the two connection points between the second sealing protrusion 205 and the inner wall surface of the second outer side wall 207. The third flame hole 203 provided at the connection points between the second sealing protrusion 205 and the inner wall surface of the second outer side wall 207 allows flame holes to also be provided at the second sealing protrusion 205, thereby ensuring the uniformity of flame output from the flame cap.

[0140] Optionally, the number of second flame stabilizing holes 8063 at the second sealing protrusion 205 is multiple, and the multiple second flame stabilizing holes 8063 are located between the two third flame holes 203. Since the distance between the two third flame holes 203 is large, the multiple second flame stabilizing holes 8063 can ensure that the flow of the second flame stabilizing groove 2031 is sufficient and prevent poor flame transmission.

[0141] Optionally, such as Figure 6 and Figure 7 As shown, the inner wall 802 of the flame cap is also provided with a flame transmission hole 2061 that communicates with the mixing chamber 804. The flame transmission hole 2061 corresponds to the flame transmission groove 805. The inner wall surface of the mixing chamber 804 corresponding to the flame transmission hole 2061 is recessed to form a gathering groove 2062.

[0142] In this embodiment, the flame transmission hole 2061 is used to transmit the flame between the inner wall 802 and the outer wall 801 of the flame cap. The gathering groove 2062 allows the gas to accumulate within it, thereby ensuring the gas supply at the flame transmission hole 2061 and thus guaranteeing the flame transmission efficiency of the flame transmission hole 2061.

[0143] The gathering groove 2062 is connected to the fire transmission groove 805 so as to facilitate the connection between the fire transmission hole 2061 and the fire transmission groove 805.

[0144] Optionally, the inner wall surface of the top wall 803 and / or the inner wall surface of the inner side wall 802 of the flame cap are recessed to form a collection groove 2062.

[0145] Optionally, when the flame cap is provided with a first groove and the gas distribution cover 40 is provided with a first protrusion 406, the first groove is connected to the flame transmission groove 805, and the inner wall of the first groove is provided with a first groove-shaped channel 2063, which connects the flame transmission hole 2061 and the first groove.

[0146] In this embodiment, when the flame is transmitted through the flame transfer groove 805, a portion of the gas flows upward along the flame transfer groove 805, while another portion of the gas can flow through the first groove-shaped channel 2063. This ensures the stability of the flame transmission in the flame transfer groove 805, and also ensures the flame transmission performance of the flame-setting hole and the flame-stabilizing groove.

[0147] Optionally, if the sealing protrusion and the inner wall of the outer side wall 801 of the flame cap are integrally formed, the flame cap is also provided with a through hole 2064. The through hole 2064 passes through the sealing protrusion and the outer side wall 801 in sequence. The through hole 2064 connects the first groove to the outside, and the through hole 2064 corresponds to and is connected to the first groove-shaped channel 2063.

[0148] In this embodiment, after the gas flowing out of the first groove-shaped channel 2063 reaches the straight hole 2064, the flame flowing out of the straight hole 2064 is the mainstream flame, which can not only ignite the flame stabilizing groove where the flame cap is located, but also transmit the flame to the flame hole of another flame cap adjacent to the flame cap, so as to realize the flame transfer between the flame caps.

[0149] Optionally, the through hole 2064 is located above the second sealing protrusion 205, and the outer end of the through hole 2064 is located above the flame stabilizing groove, with the outer end of the through hole 2064 located between two adjacent flame holes. This ensures that the through hole 2064 can transmit the flame to the flame stabilizing groove, which in turn transmits the flame to the flame hole.

[0150] Optionally, the upper end of the through hole 2064 is connected to the lower end of the flame transfer groove 805. In this way, part of the gas in the through hole 2064 flows upward through the flame transfer groove 805 and flows out from the flame stabilizing groove, while the other part flows to the flame hole of the adjacent burner cap.

[0151] Optionally, the through-hole 2064 is inclined upwards in the direction from the inside to the outside. The upward inclination of the through-hole 2064 causes the gas to tend to flow outwards, accelerating the flow velocity of the gas.

[0152] Optionally, the angle between the through hole 2064 and the horizontal direction ranges from 0° to 10°. When the angle between the through hole 2064 and the horizontal direction is large, the distance to the flame stabilizing groove located below the through hole 2064 is too far, making it inconvenient to transfer flame to the flame transfer groove 805. Specifically, the angle between the through hole 2064 and the horizontal direction can be 2°, 5°, 8°, etc.

[0153] Optionally, a second grooved channel 4096 is provided at the upper end of the first protrusion 406. The second grooved channel 4096 corresponds to and is connected to the first grooved channel 2063 to connect the fire transmission hole 2061 and the through hole 2064.

[0154] In this embodiment, the second grooved channel 4096 and the first grooved channel 2063 together form a grooved channel, so that the gas at the ignition hole 2061 can flow to the through hole 2064, thereby improving the ignition performance of the ignition channel 805. The grooved channel cooperates with the gathering channel 2062, so that the gas in the gathering channel 2062 can more easily reach the through hole 2064 through the grooved channel.

[0155] When there are three flame caps, the outer flame cap 10 is provided with a first sealing protrusion 105, and the middle flame cap 20 is provided with a second sealing protrusion 205. The first sealing protrusion 105 is located on the inner groove wall of the first groove 104 of the outer flame cap. The second sealing protrusion 205 is located on the outer groove wall of the first groove 204 of the middle flame cap, and is integrally formed with the inner wall surface of the outer side wall 801 of the middle flame cap 20. Optionally, the middle flame cap 20 is provided with a groove-shaped channel and a through hole 2064, and the thickness of the second sealing protrusion 205 is greater than that of the first sealing protrusion 105, so as to achieve radial sealing between the flame cap and the gas distribution cap 40 and improve the sealing performance.

[0156] The outer wall 801 of the middle flame cover 20 is provided with a through hole 2064, which corresponds to the fourth flame hole 102 of the inner wall 802 of the outer flame cover 10. The through hole 2064 can transmit the flame to the fourth flame hole 102, thereby igniting the four-ring flame.

[0157] For example, such as Figure 1 As shown, when the burner ignites, the ignition needle at the inner burner cap 30 ignites, igniting the first ring flame. Then, the first ring flame ignites the second ring flame, which ignites through the corresponding flame transfer hole 2061. Part of the gas in the mixing chamber 2042 of the middle ring flows upward along the second flame transfer groove 206, and part flows along the flame transfer hole 2061, the gathering groove 2062, the groove-shaped channel, and the straight through hole 2064. The flame at the straight through hole 2064 is the main flame. A portion of the gas at the straight through hole 2064 flows upward from the second flame stabilizing groove 2031 of the middle burner cap 20, which transmits the flame to the third flame hole 203, forming a three-ring flame. Simultaneously, the flame exiting the straight through hole 2064 ignites the fourth flame hole 102 of the outer burner cap 10, thus igniting the fourth ring flame. The fourth ring flame transmits the flame through the first flame transfer groove 106 to the fifth flame hole 103, thus igniting the fifth ring flame.

[0158] Optionally, such as Figure 8As shown, the gas distributor cover 40 also includes a gas outlet grille 407. The gas outlet grille 407 is located within the gas distribution channel and covers the gas outlet. The gas outlet grille 407 is arc-shaped and extends circumferentially along the gas distribution channel, matching the gas outlet. The gas outlet grille 407 is used to prevent the gas flowing from the gas outlet from directly flowing into the corresponding mixing chamber. Instead, it guides the gas to form a circular flow within the corresponding mixing chamber before reaching the corresponding burner cap mixing chamber, making the gas flow within the mixing chamber more uniform, and also ensuring a more uniform gas output from the corresponding burner holes.

[0159] Optionally, such as Figure 8 and Figure 9 As shown, the circumferential lengths of the gas outlet grilles 407 on both sides of the gas outlet are different.

[0160] In this embodiment, since the gas distribution channel is annular, the gas needs to flow in a circular motion within the gas distribution channel. Due to the influence of the burner's structure, the gas flowing into the gas outlet has different power to flow to both sides. Therefore, the circumferential directions of the gas outlet grilles 407 on both sides of the gas outlet are different, which can improve the uniformity of the gas flowing in a circular motion within the gas distribution channel.

[0161] Optionally, the exhaust grille 407 is provided with a plurality of grille holes 408, which are arranged sequentially at intervals along the circumference of the exhaust grille 407 to provide uniformity of exhaust airflow. Optionally, the uniform arrangement of the plurality of grille holes 408 can further improve the uniformity of exhaust airflow.

[0162] In the case where the burner cap includes three burner caps, there are three ejectors 503, wherein each ejector 503 extends in a straight line along the radial direction of the gas distribution assembly; the first ejector 5031 and the second ejector 5033 are located on both sides of the third ejector 5035, and the straight line containing the third ejector 5035 passes through the center of the gas distribution assembly.

[0163] In this embodiment, the third ejector 5035 passes through the center of the gas distribution assembly, and the first ejector 5031 and the second ejector 5033 are located on both sides of the third ejector 5035, making the ejector 503 compact and facilitating the supply of gas to the five mixing chambers of the three-flame cap.

[0164] In one specific embodiment, the gas passage includes an outer ring gas passage, which is arc-shaped and located at one end of the first ejector 5031 and / or the second ejector 5033. The outer ring gas passage is connected to the first ejector 5031 and / or the second ejector 5033. A third gas distribution passage 405 is connected to the outer ring gas passage and is annular. An exhaust grille 407 is located within the third gas distribution passage 405. The exhaust grille 407 includes a first grille segment 4073 and a second grille segment 4074. One end of the first grille segment 4073 extends toward the side of the first ejector 5031 and / or the second ejector 5033 away from the center of the gas distribution assembly. The other end of the first grille segment 4073 is located at the gas outlet corresponding to the first ejector 5031 and / or the second ejector 5033. One end of the second grille segment 4074 is connected to the other end of the first grille segment 4073, and the other end of the second grille segment 4074 extends toward the side of the first ejector 5031 and / or the second ejector 5033 near the center of the gas distribution assembly; wherein, the circumferential length of the second grille segment 4074 is greater than the circumferential length of the first grille segment 4073.

[0165] In this embodiment, the second grille segment 4074 is located on one side of the first ejector 5031 and / or the second ejector 5033. Therefore, the second grille segment 4074 is far from the corresponding gas outlet. The circumferential length of the second grille segment 4074 is greater than the circumferential length of the first grille segment, so that the second grille segment 4074 can make the gas flowing out of the gas outlet flow in a circular shape along the circumference of the gas distribution channel.

[0166] Optionally, there are multiple air vent grilles 407, including a first air vent grille 4071 and a second air vent grille 4072. The first air vent grille 4071 is located within the outer ring outer air distribution channel 4012, and the second air vent grille 4072 is located within the outer ring inner air distribution channel 4013. The first air vent grille 4071 is correspondingly arranged with the first ejector 5031, and the second air vent grille 4072 is correspondingly arranged with the second ejector 5033.

[0167] In this embodiment, the first gas distribution channel 401 is divided into two gas distribution channels, inner and outer. The two gas outlet grilles 407 can guide the gas in the two gas distribution channels to flow in a circular pattern, thereby improving the uniformity of gas outlet from the burner.

[0168] For example, both the first air outlet grille 4071 and the second air outlet grille 4072 are provided with a first grille section 4073 and a second grille section 4074 to further improve the uniformity of air outlet in the first mixing chamber.

[0169] Optionally, the gas passage further includes a central ring gas passage, which is annular. A third ejector 5035 passes through the central ring gas passage, wherein the inlet end of the third ejector 5035 is located outside the central ring gas passage, and the outlet end of the third ejector 5035 is located inside the central ring gas passage. The central ring gas passage is located on the side of the first ejector 5031 and / or the second ejector 5033 facing the third ejector 5035, and the central ring gas passage intersects with and is connected to the first ejector 5031 and / or the second ejector 5033. The center of the second gas distribution passage 402 coincides with the center of the gas distribution assembly, and the second gas distribution passage 402 is connected to the central ring gas passage.

[0170] In another specific embodiment, the exhaust grille 407 is located within the second air distribution channel 402. The exhaust grille 407 includes a third grille segment 4077 and a fourth grille segment 4078. The third grille segment 4077 is located on the side of the first ejector 5031 and / or the second ejector 5033 away from their inlets and extends in an arc shape along the circumference of the second air distribution channel 402. The fourth grille segment 4078 is located on the side of the first ejector 5031 and / or the second ejector 5033 facing their inlets and extends in an arc shape along the circumference of the second air distribution channel 402. The circumferential length of the third grille segment 4077 is greater than the circumferential length of the fourth grille segment 4078.

[0171] In this embodiment, the fourth exhaust grille 4076, extending within the second gas distribution channel 402, is blocked by the third ejector 5035 and cannot guide the gas to flow in a circular manner within the second gas distribution channel 402. The third exhaust grille 4075 extends to the third ejector 5035, and its longer length ensures that the gas within the second gas distribution channel 402 can achieve a circular flow, thereby ensuring the uniformity of the gas output from the burner cap.

[0172] Optionally, there are multiple air vent grilles 407, including a third air vent grille 4075 and a fourth air vent grille 4076. The third air vent grille 4075 is located within the outer air distribution channel 4022 of the middle ring, and the fourth air vent grille 4076 is located within the inner air distribution channel 4023 of the middle ring. The third air vent grille 4075 has a stepped structure 4079 at both ends to avoid the second ejector 5033 and / or the third ejector 5035.

[0173] In this embodiment, the ejector 503 has a certain height, and the stepped structure 4079 at both ends of the third exhaust grille 4075 can raise the exhaust grille 407 to avoid the second ejector 5033 and / or the third ejector 5035, thereby improving the smoothness of airflow.

[0174] Optionally, such as Figure 9As shown, along the flow direction of the gas in the second gas distribution channel 402, the aperture of the grille hole 408 at the end of the third grille section 4077 is larger than the aperture of the grille hole 408 at the beginning and middle of the third grille section 4077, and / or, the aperture of the grille hole 408 at the end of the fourth grille section 4078 is larger than the aperture of the grille hole 408 at the beginning and middle of the fourth grille section 4078. In this embodiment, because the airflow dynamics at the end of the grille section are relatively small and a stepped structure 4079 is provided, the aperture at the end of the grille section is increased, which can further improve the smoothness of airflow.

[0175] Optionally, the lower end of the gas distributor cap 40 is provided with a partition fitting part 4041, and the upper end of the gas distributor seat 50 is provided with a partition part 506 adapted to the partition fitting part 4041. The partition part 506 cooperates with the partition fitting part to divide a gas passage into an inner gas passage and an outer gas passage. Specifically, the inner gas passage is connected to the inner gas distribution passage corresponding to the gas distribution passage connected to the gas passage, and the outer gas passage is connected to the outer gas distribution passage from the gas passage to the corresponding gas distribution passage.

[0176] Specifically, the outer ring gas passage is divided into an outer ring external gas passage and an outer ring internal gas passage. The outer ring external gas passage is located outside the outer ring internal gas passage and is connected to the outer ring external gas distribution passage 4012. The outer ring internal gas passage is connected to the outer ring internal gas distribution passage 4013. The middle ring gas passage is divided into a middle ring external gas passage and a middle ring internal gas passage. The middle ring external gas passage is located outside the middle ring internal gas passage. The middle ring external gas passage is connected to the middle ring external gas distribution passage 4022, and the middle ring internal gas passage is connected to the middle ring internal gas distribution passage 4023.

[0177] Optionally, such as Figure 9 As shown, both the outer gas passage and the inner gas passage of the middle ring are located between the first ejector 5031 and the second ejector 5033. The outer gas passage intersects with the first ejector 5031, and the inner gas passage intersects with the second ejector 5033. The upper pipe wall of the first ejector 5031 and / or the second ejector 5033 has an outlet hole, allowing the gas in the first ejector 5031 to flow into the outer gas distribution passage 4022 of the middle ring through the outlet hole, and / or, the gas in the second ejector 5033 to flow into the inner gas distribution passage 4023 of the middle ring through the outlet hole.

[0178] In this embodiment, since the central ring gas passage intersects with the first ejector 5031 and the second ejector 5033, in order to ensure that the gas in the ejector tube can flow smoothly into the second gas distribution channel 402, the upper pipe wall of the first ejector 5031 and / or the second ejector 5033 is provided with an outlet hole, so that the gas can flow from the ejector 503 into the second gas distribution channel 402. Optionally, the diameter of the outlet hole is consistent with the diameter of the grid hole 408 of the grid section where the outlet hole is located, so as to facilitate the uniformity and smoothness of the gas outlet.

[0179] Optionally, the expansion section of the first ejector 5031 intersects and connects with the outer gas distribution channel 4022 of the middle ring, and / or, the expansion section of the second ejector 5033 intersects and connects with the inner gas distribution channel 4023 of the middle ring. The air outlet is located in the expansion section of the first ejector 5031, and / or, the air outlet is located in the expansion section of the second ejector 5033.

[0180] Optionally, the upper surface of the gas distributor 50 defines an outlet passage, and the lower surface of the gas distributor cover 40 defines an outlet mating passage. When the gas distributor cover 40 is placed on top of the gas distributor 50, the outlet passage and the outlet mating passage together enclose and form a gas passage.

[0181] Optionally, the air outlet channel is arc-shaped and extends circumferentially along the air distribution seat 50; wherein, along the flow direction of the airflow within the air outlet channel, the bottom wall 507 of the air outlet channel is at least partially inclined upward.

[0182] In this embodiment, since the airflow in the outlet channel needs to flow upward to the outlet channel of the air distribution cover 40, the bottom wall 507 of the outlet channel is at least partially inclined upward, which can improve the smoothness of airflow.

[0183] Optionally, there are multiple air outlet channels, which are sequentially arranged from the outside to the inside to achieve a multi-ring flame pattern.

[0184] Optionally, such as Figure 10 As shown, the circumferential length of the exhaust grille 407 is less than the circumferential length of the gas outlet. Along the flow direction of the gas in the exhaust channel, the bottom wall 507 of the exhaust channel slopes upward from the end of the exhaust grille 407.

[0185] In this embodiment, the bottom wall 507 of the gas outlet channel at the end of the gas outlet grille 407 is inclined upward, which can reduce the distance of the airflow from the end of the gas outlet grille 407 to the burner, thereby further improving the smoothness of the gas flow.

[0186] Optionally, along the flow direction of the gas in the gas distribution channel, the bottom wall 4081 of the gas distribution channel includes a second inclined surface 4082, which slopes upwards along the flow direction of the gas in the gas distribution channel; wherein, the starting end of the second inclined surface 4082 corresponds to the ending end of the first inclined surface 5071. In this embodiment, after the gas flows out through the first inclined surface 5071, the second inclined surface 4082 corresponding to the first inclined surface 5071 slopes upwards, which can continue to guide the airflow into the gas distribution channel, thereby further improving the smoothness of the airflow in the gas distribution channel.

[0187] Optionally, the bottom wall 4081 of the gas distribution channel includes a first bottom wall section, which is arc-shaped and extends circumferentially along the gas outlet grille 407; there are two second inclined surfaces 4082, which are respectively connected to the two ends of the first bottom wall section, and the gas outlet is located between the two second inclined surfaces 4082.

[0188] In this embodiment, a gas outlet is defined between the two second inclined surfaces 4082. That is, two second inclined surfaces 4082 are provided at both ends of the gas outlet, and two first inclined surfaces 5071 are provided at the two inclined surfaces respectively. This can improve the smoothness of gas flow and improve the circumferential flow of gas.

[0189] The gas distribution plate can divide a gas distribution channel into an inner gas distribution channel and an outer gas distribution channel. Both the inner and outer gas distribution channels are equipped with gas outlet grilles 407 to ensure that the gas in the inner and outer gas distribution channels of each gas distribution channel can flow circumferentially, so as to ensure the uniformity of gas supply at the burner holes at the inner and outer sides of each burner cap.

[0190] In one specific embodiment, the air outlet channels corresponding to the first air outlet grille 4071 and the second air outlet grille 4072 are both provided with a first inclined surface 5071, and the first air outlet grille 4071 and the second air outlet grille 4072 are also provided with a second inclined surface 4082.

[0191] In this embodiment, when the third gas distribution channel 405 is divided into inner and outer gas distribution channels, each gas distribution channel is provided with an exhaust grille 407, which can improve the smoothness of the gas flow in the outer ring.

[0192] For example, the bottom wall 409 of the outer ring outer gas distribution channel 4012 and the bottom wall 409 of the outer ring inner gas distribution channel 4013 include a second inclined surface 4082. This facilitates the reduction of gas flow resistance corresponding to four-ring and five-ring flames, and improves the smoothness of gas flow.

[0193] Optionally, the partition portion 506 of the air distribution seat 50 is located inside the air outlet channel, dividing the air outlet channel into an inner air outlet channel and an outer air outlet channel. The inner air outlet channel is connected to the inner air distribution channel, and the outer air outlet channel is connected to the outer air distribution channel.

[0194] In this embodiment, the coordination of each gas outlet channel, gas distribution channel, and gas outlet grille 407 ensures the smooth flow of gas in each ring flame.

[0195] Optionally, the gas distributor 50 defines a lower ejector channel, and the gas distributor cover 40 defines an upper ejector channel. When the gas distributor cover 40 is placed above the gas distributor 50, the lower ejector channel and the upper ejector channel together form the ejector 503. In this embodiment, both the gas distributor cover 40 and the gas distributor 50 are provided with ejector channels so that when the gas distributor cover 40 is placed above the gas distributor 50, the upper ejector channel and the lower ejector channel can together form the ejector 503.

[0196] Optionally, the gas distributor 50 further includes a first body 508 and a second body 5081. The first body 508 defines a first lower ejector channel 5032, a second lower ejector channel 5034, and a third lower ejector channel 5036 arranged side by side. The first lower ejector channel 5032 and the second lower ejector channel 5034 are located on both sides of the third lower ejector channel 5036. The second body 5081 is located on one side of the first body 508 and defines an outer ring gas outlet channel 501. The outlet of the outer ring gas outlet channel 501 is connected to the inlet of the outer ring mixing chamber. The outer ring gas outlet channel 501 is arc-shaped and extends circumferentially along the gas distributor 50. The gas outlet channel includes the outer ring gas outlet channel 501. The first body 508 also defines a middle ring air outlet channel 502. The outlet of the middle ring air outlet channel 502 is connected to the middle ring mixing chamber. The middle ring air outlet channel 502 is arc-shaped and located inside the outer ring air outlet channel 501.

[0197] In this embodiment, the arc-shaped outer ring gas outlet channel 501 and the middle ring gas outlet channel 502 can be adapted to the annular gas distribution cover 40 and the burner cover so that the gas can flow more evenly in the circumferential direction.

[0198] The first lower ejector channel 5032, the second lower ejector channel 5034, and the third lower ejector channel 5036 all extend radially along the gas distributor 50 and are all straight, which can reduce the flow path of the gas in the ejector 503 and improve the ejection effect of the gas.

[0199] Optionally, the gas distribution seat 50 further includes a first partition 5061, which is located inside the outer ring gas outlet channel 501 and divides the outer ring gas outlet channel 501 into a first gas outlet channel 5011 and a second gas outlet channel 5012. The first gas outlet channel 5011 is located outside the second gas outlet channel 5012 and connects the first lower ejector channel 5032 and the first mixing chamber. The second gas outlet channel 5012 connects the second lower ejector channel 5034 and the second mixing chamber.

[0200] In this embodiment, the first partition 5061 divides the outer ring gas outlet channel 501 into two gas outlet channels, one inner and one outer. The two gas outlet channels can supply gas to the two mixing chambers of the outer ring mixing chamber respectively, thereby ensuring the independence, flexibility, and reliability of the gas intake of the first mixing chamber and the second mixing chamber. Moreover, by using two lower ejector channels to supply gas to the two gas outlet channels respectively, the compactness of the burner structure can be improved, and the flexibility of the burner's firepower adjustment can be increased.

[0201] Optionally, the gas distribution seat 50 further includes a second partition 5062, which is located inside the middle ring gas outlet channel 502 and divides the middle ring gas outlet channel 502 into a third gas outlet channel 5021 and a fourth gas outlet channel 5022. The third gas outlet channel 5021 is located outside the fourth gas outlet channel 5022 and connects between the first lower ejector channel 5032 and the third mixing chamber. The fourth gas outlet channel 5022 connects between the second lower ejector channel 5034 and the fourth mixing chamber.

[0202] In this embodiment, the second partition 5062 divides the central ring gas outlet channel 502 into two gas outlet channels, inner and outer. The two gas outlet channels can supply fuel gas to the two mixing chambers of the central ring mixing chamber respectively, thereby ensuring the independence, flexibility, and reliability of the gas intake of the first mixing chamber and the second mixing chamber. Moreover, by using two lower ejector channels to supply gas to the two gas outlet channels respectively, the compactness of the burner structure can be improved, and the flexibility of the burner's firepower adjustment can be increased.

[0203] Optionally, when the air distribution cover 40 is positioned above the air distribution seat 50, the first partition portion 5061 abuts against the lower surface of the air distribution cover 40 to prevent cross-contamination between the first air outlet channel 5011 and the second air outlet channel 5012. Similarly, when the air distribution cover 40 is positioned above the air distribution seat 50, the second partition portion 5062 abuts against the lower surface of the air distribution cover 40 to prevent cross-contamination between the third air outlet channel 5021 and the fourth air outlet channel 5022.

[0204] Optionally, the gas distribution seat 50 includes a partition 504, which is connected between the inlets of two adjacent lower ejector channels. The partition 504 and the two adjacent lower ejector channels together enclose a secondary air flow channel 5041, which is connected to both the middle flame cap 20 and the outer flame cap 10.

[0205] In this embodiment, the gas flow velocity at the inlet of the lower ejector channel is relatively fast and can eject the surrounding primary air. This affects the flow of secondary air around the primary air, resulting in poor secondary air supply between the outer flame cap 10 and the middle flame cap 20, and higher flue gas levels. By setting the baffle 504, the influence of primary air on secondary air flow can be reduced, ensuring the supply of secondary air and reducing flue gas levels.

[0206] Optionally, the second body 5081 is disposed around the outside of the first lower ejector channel 5032 and the second lower ejector channel 5034, and extends in an arc shape along the circumference of the gas distribution seat 50, and the line connecting the two ends of the second body 5081 intersects both the first lower ejector channel 5032 and the second lower ejector channel 5034; the gas distribution seat 50 includes a reinforcing rib 505, which connects at least one end of the second body 5081 between the inlet of the first lower ejector channel 5032 and / or the inlet of the second lower ejector channel 5034.

[0207] In this embodiment, the second body 5081 is matched with the outer ring exhaust channel 501, which can be understood as the second body 5081 having the same or similar shape and size as the outer ring exhaust channel 501. This reduces the manufacturing cost of the gas distributor 50 and the weight of the burner. The reinforcing ribs 505 fix both ends of the second body 5081, increasing the overall structural strength of the gas distributor 50 to ensure stable operation of the burner.

[0208] When there are three flame caps, the lower end face of the gas distribution seat 50 defines a first upper ejector channel 4093, a second upper ejector channel 4094, and a third upper ejector channel 4095, respectively. The first upper ejector channel 4093 and the first lower ejector channel 5032 together form a first ejector 5031; the second upper ejector channel 4094 and the second lower ejector channel 5034 together form a second ejector 5033; and the third upper ejector channel 4095 and the third lower ejector channel 5036 together form a third ejector 5035.

[0209] Optionally, the inner flame cover 30 also has an upper flame stabilizing groove and a lower flame stabilizing groove. The upper flame stabilizing groove is located above the first flame hole 301, and the lower flame stabilizing groove is located above the first flame hole 301. The upper and lower flame stabilizing grooves are staggered, and their projections in the height direction can partially overlap to form a circumference, so that the exhaust gas from the upper and lower flame stabilizing grooves can cover the entire circumference of the first flame hole 301, preventing the flame from leaving the flame.

[0210] Optionally, the distance between the upper flame stabilizer groove and the first flame hole 301 is 1mm-2mm. The distance between the lower flame stabilizer groove and the first flame hole 301 is 1mm-2mm.

[0211] This disclosure also provides a gas stove, which includes the burner described above.

[0212] The gas stove provided in this embodiment includes any of the above-mentioned burners, and therefore has the beneficial effects of any of the above-mentioned burners, as well as the beneficial effects of any of the above-mentioned burner caps for the burners, which will not be elaborated here.

[0213] It should be noted that the sealing methods of the burner cap and gas distribution plate provided in this disclosure include, but are not limited to, upper air intake burners, full air intake burners, or lower air intake burners.

[0214] 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 flame cap for a burner, the burner including a gas distribution cover, the flame cap being disposed above the gas distribution cover, characterized in that, The flame cap includes: The top wall is ring-shaped; The inner wall, located below the top wall, is annular in shape; The outer side wall is located outside the inner side wall and below the top wall, and is annular. The top wall, the inner side wall and the outer side wall together define the mixing chamber. The flame cover is also provided with a flame transfer groove, which passes through the inner side wall, the top wall and the outer side wall in sequence, and the flame transfer groove is connected to the mixing chamber. A gas distribution section is provided on the inner wall surface of the top wall. The gas distribution section is adapted to cooperate with the gas distribution mating part of the gas distribution cover to divide the mixing chamber into an inner mixing chamber and an outer mixing chamber. The flame transfer groove penetrates the gas distribution section. A sealing protrusion is provided at the gas distribution part corresponding to the ignition groove and extends downward. The sealing protrusion can fit with the gas distribution mating part of the gas distribution cover to achieve radial sealing between the flame cover and the gas distribution cover at the ignition groove.

2. The burner cap for a burner according to claim 1, characterized in that, The ignition channel extends through the upper end of the gas distribution section, and the upper end of the sealing protrusion has a through groove that is connected to the ignition channel.

3. The burner cap for a burner according to claim 1, characterized in that, The gas distribution section includes a first groove, the sealing protrusion is provided on at least one groove wall of the first groove, and the ignition groove is connected to the first groove.

4. The burner cap for a burner according to any one of claims 1 to 3, characterized in that, The two opposite side walls inside the fire transfer groove are provided with drill holes. One end of the drill hole is connected to the outer ring mixing chamber, and the other end of the drill hole is closed. The outer mixing chamber includes the outer ring mixing chamber. The borehole is inclined upwards in the direction from the inside out.

5. The burner cap for a burner according to claim 4, characterized in that, The outer side wall includes a first outer side wall, which has a first flame stabilizing hole and a first flame stabilizing groove. The inlet end of the first flame stabilizing hole is connected to the outer ring mixing chamber, the outlet of the first flame stabilizing hole is connected to the first flame stabilizing groove, and the first flame stabilizing groove is connected to the outside. The drilled hole is located below the flame transfer groove and above the first flame stabilizing hole.

6. The burner cap for a burner according to claim 5, characterized in that, Along the direction from the inside out, the first flame stabilizing hole is inclined upward, wherein the inclination angle of the first flame stabilizing hole is greater than the inclination angle of the drill hole.

7. The burner cap for a burner according to claim 5, characterized in that, The first outer side wall is also provided with a fifth fire hole. The diameter of the drill hole is smaller than the diameter of the fifth fire hole and larger than the diameter of the first flame stabilizing hole.

8. The burner cap for a burner according to claim 1, characterized in that, The outer side wall includes a second outer side wall, the second outer side wall is provided with a second sealing protrusion, the second sealing protrusion and the second outer side wall are integrally formed, the second outer side wall is provided with a second flame stabilizing groove, the bottom of the second sealing protrusion is provided with a second flame stabilizing hole, the inlet end of the second flame stabilizing hole is connected to the second mixing chamber, the outlet end of the second flame stabilizing hole is connected to the second flame stabilizing groove, wherein the sealing protrusion includes the second sealing protrusion, and the mixing chamber includes the second mixing chamber.

9. The burner cap for a burner according to claim 8, characterized in that, The second sealing protrusion and the inner wall of the second outer wall are provided with two third flame holes. There are multiple second flame stabilizing holes, and the multiple second flame stabilizing holes are located between two third flame holes.

10. A gas stove, characterized in that, Includes a burner, said burner comprising a flame cap for the burner as claimed in any one of claims 1 to 9.

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