A burner and hob

Abstract

A burner and a cooking stove, which belong to the field of cooking stoves, are used to solve the problem that when the burner heats a pot, a ring-shaped flame blank area is formed on the bottom surface of the pot, causing the pot to be unevenly heated. The burner comprises a burner head and a fire cover, the fire cover is arranged on the burner head, the fire cover comprises a center fire cover and an outer ring fire cover, the center fire cover is provided with a center fire hole, the outer ring fire cover is sleeved outside the center fire cover, the outer ring fire cover has a top wall and an outer ring wall away from the center fire cover, the outer ring wall is provided with an outer ring fire hole, the top wall is provided with an inner ring fire hole and a strip-shaped fire hole, the inner ring fire hole is arranged on one side of the top wall close to the center fire cover, the strip-shaped fire hole is arranged on one side of the inner ring fire hole away from the center fire cover, and the strip-shaped fire hole extends along the radial direction of the outer ring fire cover. The cooking stove comprises the above-mentioned burner and a base, and the burner is arranged in the base. Through the above-mentioned burner, a ring-shaped flame from inside to outside is formed, which can heat a larger area of the pot and make the pot be more evenly heated.

Description

Technical Field

[0001] This application relates to the field of kitchen burners, and more particularly to a burner and a stove. Background Technology

[0002] For gas stoves, the burner is a key component that determines the product's core technical indicators such as heat load, energy efficiency, and flue gas emissions. The burners commonly used in gas stoves on the market are usually double-ring burners. Although this increases combustion power compared to single-ring burners, this type of flame has the disadvantage of uneven heating when heating the bottom of the pot.

[0003] The dual-ring burner includes a central burner cap and an outer ring burner cap. A central burner hole is opened on the outer ring wall of the central burner cap, and an outer ring burner hole is opened on the outer ring wall of the outer ring burner cap. The flames at the central burner hole and the outer ring burner hole heat the central area of ​​the cookware and the area near the edge of the cookware, respectively. During heating, a ring-shaped flame blank area will be formed on the bottom surface of the cookware, resulting in uneven heating of the cookware, which cannot meet the user's needs. Summary of the Invention

[0004] This application provides a burner and a stove to solve the problem of uneven heating of cookware when the burner heats the cookware.

[0005] This application provides a burner, including a burner head and a burner cap; the burner cap is disposed on the burner head, and the burner cap includes a central burner cap and an outer ring burner cap: the central burner cap is provided with a central burner hole, the outer ring burner cap is sleeved outside the central burner cap, the outer ring burner cap has a top wall and an outer ring wall away from the central burner cap, the outer ring wall is provided with an outer ring burner hole, the top wall is provided with an inner ring burner hole and a strip-shaped burner hole, the inner ring burner hole is disposed on the side of the top wall close to the central burner cap, and the strip-shaped burner hole is disposed on the side of the inner ring burner hole away from the central burner cap, and the strip-shaped burner hole extends radially along the outer ring burner cap.

[0006] The burner in this application is provided with a central flame hole, an inner ring flame hole, a strip flame hole, and an outer ring flame hole in sequence from the inside out. These four types of flame holes heat the cookware through flames that burn sequentially from the inside out. The flame in the strip flame hole can heat the flame blank area on the bottom surface of the cookware, increasing the flame coverage area on the bottom surface of the cookware when the burner heats it, thereby making the cookware heat more evenly and improving its performance.

[0007] In some embodiments of this application, the outer ring flame cap further includes a plurality of first protrusions distributed on the top wall around the axis of the outer ring flame cap. The number of strip-shaped flame holes is set to a plurality, with each of the first protrusions corresponding to one of the strip-shaped flame holes. The strip-shaped flame holes are disposed on the top surface of the corresponding first protrusion, and an air channel is formed between adjacent first protrusions. The first protrusions can locally increase the height of the top wall of the outer ring flame cap. With the top wall thickness remaining unchanged, this makes the processing of the strip-shaped flame holes easier and avoids additional damage to other parts of the top wall. Simultaneously, the higher height of the first protrusions allows for a higher flame height, facilitating air intake from the gap between the first protrusion and the top wall, and also increasing the flame height for easier heating of the cookware.

[0008] In some embodiments of this application, the top surface is inclined, and along the axis of the outer ring burner cap towards the outer ring wall, the top surface gradually approaches the top wall. Along the axis of the outer ring burner cap towards the outer wall, the top surface of the first protrusion gradually approaches the top wall, while an outer ring flame hole is provided on the outer ring wall. This allows the flame at the position of the strip flame hole near the outer ring wall to connect with the flame of the gas combustion within the outer ring flame hole, thereby preventing dead zones when heating the cookware and increasing the heated area of ​​the cookware.

[0009] In some embodiments of this application, the first protrusion has an inner side facing the central burner cap, and an inner ring flame hole is disposed on the inner side. Each first protrusion has at least one inner ring flame hole. The inner ring flame hole, located on the inner side of the first protrusion, allows the flame from the side of the strip flame hole closest to the inner side to connect with the flame generated by the combustion of gas within the inner ring flame hole. This prevents dead zones from forming inside the strip flame hole when heating the cookware, resulting in a larger heated area for the cookware.

[0010] In some embodiments of this application, the inner surface is a slope, and the distance between the edge of the inner surface near the central burner cap and the top wall is less than the distance between the edge of the inner surface away from the central burner cap and the top wall. The inner surface is a slope, and the slope gradually moves away from the outer ring burner cap from its axis along the outer ring wall. This allows the flame from the inner ring burner holes to face the central area of ​​the cookware, thus covering the annular area between the central burner hole and the strip burner holes, resulting in better heating of the cookware.

[0011] In some embodiments of this application, the outer ring flame cap further includes a plurality of second protrusions, each in the shape of a triangular pyramid, and disposed on the top wall. Each second protrusion corresponds one-to-one with a plurality of first protrusions, with each second protrusion located between two adjacent first protrusions, such that the plurality of second protrusions are distributed around the axis of the outer ring flame cap, forming an air channel between adjacent first and second protrusions. Because the second protrusions are disposed on the top wall, and an air channel is provided between the second and first protrusions, the flame at the strip-shaped flame hole can be supplemented with secondary air through the air in the air channel during combustion, resulting in more complete combustion and preventing incomplete combustion.

[0012] In some embodiments of this application, the number of outer ring flame holes is set to multiple groups, with each group comprising multiple outer ring flame holes. These multiple groups of outer ring flame holes are spaced apart around the axis of the outer ring flame cap, and the gap between two adjacent groups of outer ring flame holes is larger than the gap between two adjacent outer ring flame holes within the same group, thus forming a first air intake channel between adjacent groups of outer ring flame holes. By setting multiple groups of outer ring flame holes and leaving gaps between adjacent groups, air at the gaps can circulate with air at the air channel, thereby allowing more oxygen to be introduced into the air channel.

[0013] In some embodiments of this application, the central burner cap has an annular wall near the outer ring burner cap, and a central burner hole is disposed on the annular wall. An annular protrusion is also provided on the annular wall of the central burner cap, extending circumferentially around the central burner cap and located on the side of the central burner hole furthest from the burner head. The annular protrusion, located on the annular wall and above the central burner hole, can block spillage when the pot overflows, thus preventing the spillage from clogging the central burner hole and causing a gas flow interruption.

[0014] In some embodiments of this application, the number of central flame holes is set to multiple groups, with each group including multiple central flame holes, and the multiple groups of central flame holes are distributed around the axis of the central flame cap. When multiple groups of central flame holes are set, the flame power at the central flame holes can be increased by increasing the number of central flame holes, thereby increasing the combustion power of the burner.

[0015] This application provides a cooktop, including a base, a burner, a control panel, and a pot support. The burner is the aforementioned type of burner. The control panel is mounted on the base, and the burner is installed within the space formed by the base and the control panel, with a portion of the burner penetrating the control panel. The pot support is mounted on the control panel, and the pot support is fitted onto the portion of the burner that extends beyond the control panel. When a pot is placed on the pot support, the burner heats the pot. Through the aforementioned multi-ring flame from the inside out, a larger heating area and more even heating of the pot are achieved, resulting in better heating performance and meeting the user's high-heating power requirements for stir-frying and other high-heating applications. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0017] Figure 1 A schematic diagram of an existing burner provided for this application.

[0018] Figure 2 A front view of a burner provided in an embodiment of this application.

[0019] Figure 3 This is one of the perspective views of a burner provided in the embodiments of this application.

[0020] Figure 4 This is a top view of the outer ring flame cap provided in an embodiment of this application.

[0021] Figure 5 This is a second perspective view of the burner provided in the embodiments of this application.

[0022] Figure 6 This is a cross-sectional schematic diagram of the flame cover provided in an embodiment of this application.

[0023] Figure 7 This is a three-dimensional schematic diagram of the flame cover provided in an embodiment of this application.

[0024] Figure 8 This is a cross-sectional schematic diagram of the outer ring flame cap provided in an embodiment of this application.

[0025] Figure 9 This is one of the enlarged schematic diagrams of the outer ring fire cover provided in the embodiments of this application.

[0026] Figure 10 This is a second partially enlarged schematic diagram of the outer ring fire cover provided in an embodiment of this application.

[0027] Figure 11 This is the third partially enlarged schematic diagram of the outer ring fire cover provided in the embodiments of this application.

[0028] Figure 12 This is one of the top views of the flame cover provided in the embodiments of this application.

[0029] Figure 13 This is a second top view of the flame cover provided in an embodiment of this application.

[0030] Figure 14 The third top view of the flame cover provided in the embodiment of this application.

[0031] Figure 15 This is a front view of the fire cover provided in an embodiment of this application.

[0032] Figure 16 This is a cross-sectional schematic diagram of a burner provided in an embodiment of this application.

[0033] Figure 17 This is a three-dimensional schematic diagram of the center flame cap provided in an embodiment of this application.

[0034] Figure 18 One of the front views of the center fire cover provided in the embodiments of this application.

[0035] Figure 19 The second front view of the center fire cover provided in the embodiment of this application.

[0036] Figure 20 A schematic diagram of a stove provided in an embodiment of this application.

[0037] Reference numerals: 1-Burner; 11-Burner head; 111-Burner head body; 112-Burner distributor; 1121-Air inlet hole; 12-Burner cap; 121-Center burner cap; 1211-Center burner hole; 1212-Ring wall; 1213-Upper wall; 1214-Annular protrusion; 122-Outer ring burner cap; 1221-Outer ring wall; 1222-Top wall; 1223-Inner ring wall; 1224-Outer ring burner hole; 1225-Inner ring burner hole; 1226-Strip burner hole; 1227-First protrusion; 12271-Top surface; 12272-Transition surface; 12273-Inner side surface; 1228-Second protrusion; 2-Base; 3-Panel; 4-Pot support. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0042] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0043] Please refer to Figure 1 The burner 1 commonly used in gas stoves on the market is a double-ring burner. Although the double-ring burner improves the combustion power of burner 1 compared to the single-ring burner, the pot has the disadvantage of uneven heating when this type of flame heats the pot.

[0044] Please continue to refer to Figure 1 The dual-ring burner includes a central flame cap 121 and an outer ring flame cap 122. A central flame hole 1211 is opened on the outer ring wall 1221 of the central flame cap 121, and an outer ring flame hole 1224 is opened on the outer ring wall 1221 of the outer ring flame cap 122. The flames at the central flame hole 1211 and the outer ring flame hole 1224 respectively heat the central area of ​​the pot and the area near the edge of the pot. During heating, an annular flame blank area will be formed on the bottom surface of the pot, resulting in uneven heating of the pot, which cannot meet the needs of users for high heat loads such as stir-frying.

[0045] Please refer to Figure 2 Therefore, this application provides a new burner, including a burner head 11 and a burner cap 12.

[0046] Please continue to refer to Figure 2 The burner head 11 includes a burner head body 111 and a burner distributor 112. The burner distributor 112 is disposed on the burner head body 111. An air inlet pipe is connected to the end of the burner head body 111 away from the burner distributor 112 to provide gas to the burner head 11 through the air inlet pipe. A first gas passage is provided inside the burner head body 111, and a second gas passage communicating with the first gas passage is provided on the burner distributor 112.

[0047] Please continue to refer to Figure 2The burner cap 12 is located on the burner head 11 and is mounted on the flame distributor 112. A third gas passage is provided inside the burner cap 12, and the third gas passage should be connected to the second gas passage on the flame distributor 112 so as to provide gas to the burner cap 12 through the second gas passage.

[0048] Please refer to Figure 3 The burner cap 12 includes a central burner cap 121 and an outer ring burner cap 122. The outer ring burner cap 122 is fitted outside the central burner cap 121. Both the outer ring burner cap 122 and the central burner cap 121 are located on the burner head 11. The outer ring burner cap 122 and the central burner cap 121 are specifically set on the burner distributor 112. The outer ring burner hole 1224 and the inner ring burner hole 1225 are both connected to the second gas passage on the burner distributor 112. That is, the third gas passage includes the central gas passage set inside the central burner cap 121 and the outer ring gas passage set inside the outer ring burner cap 122.

[0049] Please continue to refer to Figure 3 The central burner cap 121 is provided with a central burner hole 1211, which is connected to the central gas passage inside the central burner cap 121 to provide gas to the central burner hole 1211 through the central gas passage. The central burner cap 121 can be cylindrical, and the central burner hole 1211 can be set on the annular wall 1212 of the central burner cap 121, which is the cylindrical surface of the central burner cap 121.

[0050] Please continue to refer to Figure 3 The outer ring burner cap 122 has an outer ring gas passage. The outer ring burner cap 122 has a top wall 1222 and an outer ring wall 1221 away from the central burner cap 121. The top wall 1222 is the wall surface that indirectly contacts the cookware when the burner 1 is in use, and it is also the upper surface of the outer ring burner cap 122. The outer ring wall 1221 is the outer ring wall surface of the outer ring burner cap 122 away from its axis.

[0051] Please continue to refer to Figure 3 The outer ring wall 1221 is provided with an outer ring flame hole 1224, and the top wall 1222 is provided with an inner ring flame hole 1225 and a strip flame hole 1226. The inner ring flame hole 1225, the strip flame hole 1226 and the outer ring flame hole 1224 are all connected to the outer ring gas passage. The inner ring flame hole 1225 is located on the side of the top wall 1222 close to the central flame cap 121, and the strip flame hole 1226 is located on the side of the inner ring flame hole 1225 away from the central flame cap 121. The strip flame hole 1226 extends radially along the outer ring flame cap 122.

[0052] Please refer to Figure 2 and Figure 3The burner 1 in this application is provided with a central flame hole 1211, an inner ring flame hole 1225, a strip flame hole 1226 and an outer ring flame hole 1224 from the inside out. These four types of flame holes heat the cookware through flames that burn sequentially from the inside out. The flame in the strip flame hole 1226 can heat the flame blank area on the bottom surface of the cookware, increasing the flame coverage area on the bottom surface of the cookware when the burner 1 heats the cookware, thereby making the cookware heat more evenly and improving its performance.

[0053] Please refer to Figure 4 In some examples, the cross-section of the strip-shaped flame hole 1226 can be rectangular, making the flame hole easier to manufacture; it can simply be cut with a saw blade or milled with a milling cutter. The cross-section of the strip-shaped flame hole 1226 can also be triangular or spindle-shaped, all of which can achieve the desired function of generating the corresponding flame.

[0054] Please continue to refer to Figure 4 In some examples, the strip-shaped flame hole 1226 can extend radially along the outer ring flame cap 122. The extension direction of the strip-shaped flame hole 1226 is the opening direction of the strip-shaped flame hole 1226 on the top wall 1222, that is, the direction perpendicular to the depth. The extension direction of the strip-shaped flame hole 1226 can coincide with the radius of the outer ring flame cap 1222, or it can form a certain angle with the radius of the outer ring flame hole 1224. Regardless of which extension direction is adopted, the strip-shaped flame hole 1226 should penetrate the top wall 1222 of the outer ring flame cap 122, and emit a strip-shaped flame from the outer ring flame hole 1224 to heat the annular flame blank area on the bottom surface of the pot.

[0055] In some examples, the burner 112 can be installed with the outer ring burner cap 122 and the center burner cap 121 through fasteners to ensure the installation stability of the outer ring burner cap 122, the center burner cap 121 and the burner 112, as well as the sealing between the second gas passage and the outer ring gas passage and the inner ring gas passage after installation.

[0056] Please refer to Figure 5 In some examples, the central burner cap 121 and the outer ring burner cap 122 can be coaxially arranged. When the central burner cap 121 and the outer ring burner cap 122 are coaxially arranged, the central burner hole 1211, the inner ring burner hole 1225, the strip burner hole 1226 and the outer ring burner hole 1224 on the central burner cap 121 and the outer ring burner cap 122 can extend outward in sequence with the axis of the outer ring burner cap 122 to achieve a uniform heating effect on the cookware.

[0057] In some examples, the center burner cap 121 and the outer ring burner cap 122 can also be arranged off-axis, so that the center burner hole 1211, inner ring burner hole 1225, strip burner hole 1226, and outer ring burner hole 1224 on the center burner cap 121 and the outer ring burner cap 122 can provide eccentric heating to the area above the center burner cap 121. This can produce a better heating effect on the area with eccentric heating, which can meet the needs of many chefs who prefer to use cookware at an angle, and can also meet the needs of non-uniform cookware. Non-uniform cookware can be cookware with uneven materials or irregular shapes.

[0058] Please continue to refer to Figure 5 In some examples, the central flame cap 121 has an upper wall 1213, that is, the upper surface of the central flame cap 121. The upper wall 1213 of the central flame cap 121 and the top wall 1222 of the outer ring flame cap 122 can be located on the same plane or on close planes, and are arranged parallel to each other. In this way, the flames on the central flame cap 121 and the outer ring flame cap 122 can be located on the same plane or close planes, thereby providing a better heating effect for flat-bottomed cookware and some convex-bottomed cookware.

[0059] Please refer to Figure 6 In some examples, the central burner cap 121 has an upper wall 1213. The upper wall 1213 of the central burner cap 121 is flat, and the top wall 1222 of the outer ring burner cap 122 is conical. The strip-shaped flame holes 1226 are opened on the top wall 1222 of the conical surface. At this time, the central burner cap 121 and the outer ring burner cap 122 are coaxially arranged, and the conical surface of the outer ring burner cap 122 extends upward from the inside to the outside, that is, from the axis of the outer ring burner cap 122 to the outer ring wall 1221 of the outer ring burner cap 122, the top wall 1222 gradually moves away from the burner head 11. At this time, for cookware with a conical bottom, the inner ring flame hole 1225, the strip flame hole 1226, and the outer ring flame hole 1224 on the outer ring burner cap 122 are successively moved away from the burner head 11, that is, the distance between the inner ring flame hole 1225, the strip flame hole 1226, and the outer ring flame hole 1224 is relatively close, so that the flames on the inner ring flame hole 1225, the strip flame hole 1226, and the outer ring flame hole 1224 can all have a good heating effect on the cookware.

[0060] In other examples, both the first gas passage and the second gas passage include two independent sub-passages, and the sub-passages of the two first gas passages correspond one-to-one with and are connected to the sub-passages of the two second gas passages, respectively providing gas to the inner ring gas passage and the outer ring gas passage.

[0061] Please refer to Figure 7Based on this, the outer ring flame cap 122 also includes a plurality of first protrusions 1227, which are distributed on the top wall 1222 around the axis of the outer ring flame cap 122. The number of strip-shaped flame holes 1226 is set to be multiple, with each of the plurality of first protrusions 1227 corresponding to one of the plurality of strip-shaped flame holes 1226. The strip-shaped flame holes 1226 are set on the top surface 12271 of the corresponding first protrusion 1227, and an air channel is formed between two adjacent first protrusions 1227.

[0062] Please refer to Figure 8 The first protrusion 1227 can locally increase the height of the top wall 1222 of the outer ring flame cap 122. With the wall thickness of the top wall 1222 remaining unchanged, it can make the processing of the strip flame hole 1226 easier and will not cause additional damage to other parts of the top wall 1222. At the same time, the higher height of the first protrusion 1227 can make the flame higher. On the one hand, it is convenient for air to enter the flame from the gap between the first protrusion 1227 and the top wall 1222. On the other hand, it can increase the flame height, which is convenient for heating the pot.

[0063] Please continue to refer to Figure 7 and Figure 8 In some examples, the number of first protrusions 1227 can be 3-20, preferably 10. All the first protrusions 1227 can be evenly distributed around the axis of the outer ring cover 122, so that the first protrusions 1227 have a more uniform heating effect on the pot.

[0064] Please continue to refer to Figure 7 and Figure 8 In some examples, the width of the strip-shaped flame hole 1226 can be 0.5mm-2mm, preferably 0.8mm.

[0065] Please continue to refer to Figure 7 and Figure 8 In some examples, the first boss 1227 can be a triangular pyramid, a triangular prism, or a trapezoidal truncated pyramid, all of which can meet the usage requirements.

[0066] In some examples, all the first protrusions 1227 can be the same shape or different shapes. Their shapes can be arranged regularly or irregularly. All of them can make flames burn at the strip fire holes 1226 on the first protrusions 1227, increasing the heating area of ​​the burner 1 on the pot.

[0067] Please refer to Figure 9 Based on this, the top surface 12271 is a slope, and along the axis of the outer ring flame cap 122 to the outer ring wall 1221, the top surface 12271 gradually approaches the top wall 1222. Along the axis of the outer ring flame cap 122 to the outer wall, the top surface 12271 of the first protrusion 1227 gradually approaches the top wall.

[0068] 1222, while an outer ring fire hole 1224 is provided on the outer ring wall 1221. At this time, the flame of the strip fire hole 1226 near the outer ring wall 1221 can be connected with the flame of the gas combustion in the outer ring fire hole 1224, thereby preventing dead corners when heating the cookware and making the cookware heat-receiving area larger.

[0069] In some examples, the top surface 12271 can be a flat surface or a curved surface. Regardless of whether the top surface 12271 is flat, curved, or even irregular, corresponding strip-shaped flame holes 1226 can be opened on the top surface 12271 to allow flames to burn at the strip-shaped flame holes 1226 and increase the heating area of ​​the cookware by the burner 1.

[0070] Please continue to refer to Figure 9 In some examples, the first boss 1227 has a top surface 12271, a transition surface 12272 connecting the top surface 12271 and the top wall 1222, and an inner surface 12273 located between the top surface 12271 and the inner surface 12273. The inner surface 12273 should be the surface of the first boss 1227 facing the central flame cap 121. The number of transition surfaces 12272 should be two, so the first boss 1227 has five surfaces in this case.

[0071] Please continue to refer to Figure 9 In some examples, the top surface 12271 of the first protrusion 1227 contacts the top wall 1222 of the outer ring flame cap 122, and the contact is a point contact. That is, the top surface 12271 of the first protrusion 1227 is a triangular surface, and the three sides of the triangular surface are located on the two transition surfaces 12272 and the inner surface 12273, respectively. In this case, the strip-shaped flame hole 1226 located on the top surface 12271 can be completely located on the top surface 12271 or partially located on the top wall 1222, both of which can meet the usage requirements. At this time, there should be an included angle between the top surface 12271 and the top wall 1222, and the included angle can be 5°-35°, preferably 15°.

[0072] In some other examples, the top surface 12271 of the first boss 1227 contacts the top wall 1222 of the outer ring flame cap 122, and the contact is a line contact. That is, the top surface 12271 of the first boss 1227 is a quadrilateral surface, and the four sides of the quadrilateral surface are located on the top wall 1222, the two transition surfaces 12272, and the inner surface 12273, respectively. In this case, the strip-shaped flame hole 1226 located on the top surface 12271 can be completely located on the top surface 12271 or partially located on the top wall 1222, both of which can meet the usage requirements.

[0073] In some other examples, the top surface 12271 of the first protrusion 1227 does not contact the top wall 1222 of the outer ring burner cap 122. When the top surface 12271 of the first protrusion 1227 does not contact the top wall 1222, the top surface 12271, the transition surface 12272, and the top can still enclose to form a rear wall surface, at which time the first protrusion 1227 has six planes. At this time, the first protrusion 1227 can be one of a trapezoidal platform, a trapezoidal platform-like platform (a trapezoidal platform whose part of the surface is composed of curved surfaces), a cuboid, or a cuboid-like platform (a cuboid whose part of the surface is composed of curved surfaces). Corresponding strip-shaped flame holes 1226 can still be opened on the top surface 12271 of the first protrusion 1227, so that flames burn at the strip-shaped flame holes 1226 and increase the heating area of ​​the burner 1 on the pot.

[0074] In some other examples, when the top surface 12271 of the first boss 1227 does not contact the top wall 1222, a ridge can be formed between the two transition surfaces 12272. In this case, the first boss 1227 can be in the shape of a triangular prism or a quasi-triangular prism (a triangular prism whose surface is partly composed of curved surfaces). However, since the strip-shaped fire hole 1226 on the top surface 12271 needs to penetrate through the first boss 1227 and the top wall 1222 when the first boss 1227 is fully protruding, the processing is relatively complicated, so this solution is generally not adopted.

[0075] Please refer to Figure 9 and Figure 10 Based on this, the first protrusion 1227 has an inner surface 12273 facing the central burner cap 121. An inner ring flame hole 1225 is disposed on the inner surface 12273, and each first protrusion 1227 has at least one inner ring flame hole 1225. The inner ring flame hole 1225, disposed on the inner surface 12273 of the first protrusion 1227, allows the flame from the side of the strip flame hole 1226 closest to the inner surface 12273 to connect with the flame generated by the combustion of gas within the inner ring flame hole 1225. This prevents dead zones from forming inside the strip flame hole 1226 when heating the cookware, resulting in a larger heated area for the cookware.

[0076] Please continue to refer to Figure 10 In some examples, the inner surface 12273 of the first protrusion 1227 is connected to the inner ring wall 1223 of the outer ring flame cap 122. The inner ring wall 1223 of the outer ring flame cap 122 is the annular wall surface of the outer ring flame cap 122 facing the central flame cap 121. An included angle should be provided between the inner surface 12273 of the first protrusion 1227 and the inner ring wall 1223 of the annular flame cap 122, so that the inner ring flame hole 1225 faces upward towards the central flame cap 121. This included angle can be 15°-65°, preferably 35°.

[0077] In some examples, the inner surface 12273 of the first boss 1227 can be either a plane or a curved surface. When the inner surface 12273 is a plane, it is easier to process and the processing cost is lower. When the inner surface 12273 is a curved surface, it can be either a concave or convex surface, or it can be an irregular surface. Regardless of whether the inner surface 12273 is concave or convex, the purpose of opening the inner annular fire hole 1225 on the inner surface 12273 can be achieved as described above.

[0078] Please refer to Figure 11 Based on this, the inner surface 12273 is a slope, and the distance between the edge of the inner surface 12273 near the central burner cap 121 and the top wall 1222 is smaller than the distance between the edge of the inner surface 12273 away from the central burner cap 121 and the top wall 1222. The inner surface 12273 is a slope, and the slope gradually moves away from the burner head 11 from the outer ring wall 1221 of the outer ring burner cap 122 along the axis of the outer ring burner cap 122. This allows the flame of the inner ring burner hole 1225 to face the central area of ​​the cookware, thereby covering the annular area between the central burner hole 1211 and the strip burner hole 1226 with the flame at the inner ring burner hole 1225, resulting in better heating of the cookware.

[0079] In some examples, the inner surface 12273 on each first boss 1227 can be a single surface or a group of multiple adjacent surfaces.

[0080] Please refer to Figure 12 In some examples, all the first protrusions 1227 are evenly distributed around the axis of the outer ring cap 122, and all the first protrusions 1227 are the same size and similar in shape. All the inner surfaces 12273 are also located on the same frustum. When the frustum is a truncated cone, the inner surface 12273 is an arc surface and tilts inward. The cone angle of the truncated cone can be related to the tilt angle of the inner surface 12273 of the first protrusions 1227. The two angles can be equal or similar. When the frustum is a truncated pyramid, the number of edges of the truncated pyramid should be equal to the number of first protrusions 1227. In this case, the inner surface 12273 is a plane.

[0081] Please continue to refer to Figure 12 In some examples, each inner surface 12273 may be provided with only a plurality of inner ring burner holes 1225, and the number of the plurality of inner ring burner holes 1225 may be 2-5, preferably 3. In this case, each inner ring burner hole 1225 should be connected to the outer ring gas passage so as to provide gas to the inner ring burner hole 1225 through the outer ring gas passage.

[0082] At this time, the three inner ring flame holes 1225 can be distributed around the axis of the outer ring flame cap 122. The middle inner ring flame hole 1225 can communicate with the strip flame hole 1226. That is, the strip flame hole 1226 extends from the side wall of the flame hole located in the middle of the three inner ring flame holes 1225 along the radial direction of the outer ring flame cap 122 to the outer ring wall 1221 of the outer ring flame cap 1222. When produced in this way, during use, the gas at the central flame hole 1211 can be ignited first to form a flame. Then, the flame spreads outward to ignite the gas at the inner ring flame holes 1225. At the same time, the gas at the strip flame hole 1226, which is connected to the inner ring flame hole 1225, can be ignited simultaneously. Finally, the flame ignites the flame of the outer ring flame hole 1224 outward through the extension direction of the strip flame hole 1226, achieving the expected automatic ignition and rapid ignition purpose.

[0083] In some other examples, the strip flame hole 1226 and the inner ring flame hole 1225 may not have the aforementioned connection; that is, the strip flame hole 1226 and the inner ring flame hole 1225 are independent of each other on the first boss 1227, and they do not have a direct spatial connection. In this case, there can be a clearer division of labor between the flame of the inner ring flame hole 1225 and the flame of the strip flame hole 1226, and the heating area is more clearly defined.

[0084] Please refer to Figure 13 Based on this, the outer ring flame cap 122 also includes multiple second protrusions 1228. Each second protrusion 1228 is triangular pyramidal in shape and is located on the top wall 1222. Each second protrusion 1228 corresponds one-to-one with a plurality of first protrusions 1227. Each second protrusion 1228 is located between two adjacent first protrusions 1227, so that the multiple second protrusions 1228 are distributed around the axis of the outer ring flame cap 122, forming an air channel between adjacent first protrusions 1227 and second protrusions 1228. Since the second protrusions 1228 are located on the top wall 1222, and an air channel is formed between the second protrusions 1228 and the first protrusions 1227, the flame at the strip flame hole 1226 can receive secondary air through the air channel during combustion, resulting in more complete combustion and preventing incomplete combustion.

[0085] Please continue to refer to Figure 13In some examples, both the first protrusion 1227 and the second protrusion 1228 can be protrusions provided on the top wall 1222. That is, the highest height of the first protrusion 1227 and the highest height of the second protrusion 1228 are both higher than the height of the top wall 1222 in the axial direction of the outer ring burner cap 122 (with the opposite direction of gravity as positive). In this case, the strip-shaped flame hole 1226 and the inner ring flame hole 1225 located on the first protrusion 1227 can be closer to the pot mounted on the burner 1. When a structure such as a pot support 4 is installed between the burner 1 and the pot, the outer flame of the strip-shaped flame hole 1226 and the inner ring flame hole 1225 can provide a better heating effect to the pot through the outer flame of the flame emitted by them.

[0086] In some examples, both the first boss 1227 and the second boss 1228 can be formed by casting. When the outer ring burner cap 122 body is cast, it is easier to cast the cavity located inside the outer ring burner cap 122, making it an outer ring gas passage. Furthermore, the wall thickness of the cast outer ring burner cap 122 can be set to be equal everywhere, which makes it easier to cut and process the strip-shaped flame holes 1226 and the inner ring flame holes 1225 on the first boss 1227. The strip-shaped flame holes 1226 can be processed by sawing with a saw blade or milling with a milling cutter.

[0087] Meanwhile, the second boss 1228, which is formed by casting, can be a hollow boss, thereby reducing the overall weight of the burner 1 itself, making it more convenient to use and requiring less material.

[0088] Please continue to refer to Figure 13 In some examples, the number of second bosses 1228 is equal to the number of first bosses 1227, and a second boss 1228 is provided between each two adjacent first bosses 1227. There should be a gap between the edge line of the second boss 1228 contacting the top wall 1222 and the edge line of the first boss 1227 contacting the top wall 1222.

[0089] Please refer to Figure 14 In some examples, the second boss 1228 is similar in shape to the first boss 1227 and can be one or more of the following: trapezoidal platform, trapezoidal platform (a trapezoidal platform whose surface is partly composed of curved surfaces), cuboid or cuboid (a cuboid whose surface is partly composed of curved surfaces), triangular prism or triangular prism (a triangular prism whose surface is partly composed of curved surfaces).

[0090] In some other examples, since the main function of the second protrusion 1228 here is to separate the airflow between the adjacent first protrusions 1227 and allow it to flow along the gap between the second protrusion 1228 and the first protrusion 1227, the second protrusion 1228 can also be composed of multiple sub-protrusions to form a plane with the second protrusion 1228 facing the first protrusion 1227.

[0091] In some examples, adjacent second protrusions 1228 may or may not be physically connected. Regardless of whether there is a connection between adjacent second protrusions 1228, there should be a corresponding angle between them that promotes airflow. The angle between adjacent second protrusions 1228 allows air to flow through the sidewalls of the two second protrusions 1228 at that angle, achieving an airflow effect. During flame combustion, more secondary air can be supplied through this channel.

[0092] Please refer to Figure 15 Based on this, the number of outer ring burner holes 1224 is set to multiple groups, with each group including multiple outer ring burner holes 1224. These multiple groups of outer ring burner holes 1224 are distributed at intervals around the axis of the outer ring burner cap 122, and the gap between two adjacent groups of outer ring burner holes 1224 is larger than the gap between two adjacent outer ring burner holes 1224 within the same group, so that a first air supply channel is formed between adjacent groups of outer ring burner holes 1224. When multiple groups of outer ring burner holes 1224 are set and gaps are left between adjacent groups, the air at these gaps can circulate with the air in the air channel, thereby allowing the air channel to supply more oxygen to the combustion gas.

[0093] Please continue to refer to Figure 13 and Figure 15 In some examples, the number of groups of outer ring flame holes 1224 is not equal to the number of first protrusions 1227, and the first air supply channels between adjacent groups of outer ring flame holes 1224 and the air channels between the first protrusion 1227 and the second protrusion 1228 do not completely correspond. When flames burn at the outer ring flame holes 1224, strip flame holes 1226, and inner ring flame holes 1225, and the burner 1 operates at maximum power, the first air supply channels between adjacent groups of outer ring flame holes 1224 supply air to the gas at the strip flame holes 1226 and the inner ring flame holes 1225 to supplement the air outside the burner 1, thereby improving the combustion efficiency of the gas in the burner 1. The incomplete correspondence between the gaps between adjacent groups of outer ring flame holes 1224 and the air channels between the first protrusion 1227 and the second protrusion 1228 can be interpreted as a partial correspondence between the air channels and the first air supply channels. A partial air channel can be interpreted as a portion of the air channels or a portion of any air channel.

[0094] Please continue to refer to Figure 15 In this example, gaps are also left between the multiple outer ring burners 1224 in each group of outer ring burners 1224. These gaps allow the combustion at each outer ring burner 1224 to be relatively independent. Under the premise of mutual ignition, the direction of gas flow and air supply in adjacent outer ring burners 1224 will not be affected, so that the gas at the outer ring burner 1224 can also be burned more completely.

[0095] In some other examples, the number of groups of outer ring flame holes 1224 is equal to the number of first protrusions 1227. In this case, the first air supply channels between adjacent groups of outer ring flame holes 1224 and the air channels between the first protrusion 1227 and the second protrusion 1228 correspond one-to-one, and more air is supplied to the air channels through the first air supply channels. In this way, the number of outer ring flame holes 1224 is further reduced, and the overall power of burner 1 is reduced. When burner 1 only uses the method of supplying air in the previous example, it will lead to insufficient secondary air supply, which will further lead to incomplete combustion of gas in the inner ring flame holes 1225. Through the one-to-one correspondence of the first air supply channels and air channels in this example, the phenomenon of incomplete combustion of gas at the inner ring flame holes 1225 and the strip flame holes 1226 can be alleviated.

[0096] Please refer to Figure 16 Based on this, a gap is left between the central burner cap 121 and the outer ring burner cap 122, and this gap forms a second air supply channel. The burner distributor 112 is provided with an air supply hole 1121 that communicates with the second air supply channel. Air from outside the burner 1 can also enter the second air supply channel through the air supply hole 1121, and the second air supply channel enters the area of ​​the burner cap 12 (i.e., the combustion area of ​​the burner 1), first directly contacting the central burner hole 1211 and the inner ring burner hole 1225, supplying them with secondary air, so that the central burner hole 1211 and the inner ring burner hole 1225 are supplied with air, and then supplying air to the strip burner hole 1226 through the air channel. In conjunction with the first air channel mentioned above, the combustion of the gas in each area of ​​the burner cap 12 can be more complete.

[0097] Please continue to refer to Figure 16 In some examples, the number of air inlet holes 1121 can be set to multiple, and the number of multiple air inlet holes 1121 can be 2-6, and all air inlet holes 1121 are not in contact with the second gas passage inside the igniter 112. That is, the second gas passage and the air inlet holes are both set on the igniter 112 and isolated by the body of the igniter 112.

[0098] In some examples, multiple air inlet holes 1121 may be evenly distributed around the axis of the fire distributor 112.

[0099] In some examples, guide tubes are distributed within the space where the second air supply channel is located. The guide tubes penetrate the outer wall of the flame spreader 112 and are connected to the second gas passage. The other end of the guide tubes is connected to the outer ring gas passage of the outer ring burner cap 122. The number of guide tubes can be set to multiple, and the multiple guide tubes are distributed around the axis of the flame spreader 112.

[0100] Please refer to Figure 17Based on this, the number of central flame holes 1211 is set to multiple groups, each group of central flame holes 1211 includes multiple central flame holes 1211, and the multiple groups of central flame holes 1211 are distributed around the axis of the central flame cap 121. When multiple groups of central flame holes 1211 are set, the flame power at the central flame holes 1211 can be increased by increasing the number of central flame holes 1211, thereby increasing the combustion power of the burner 1.

[0101] In some examples, the number of central flame holes 1211 in each group can be two or three.

[0102] Please refer to Figure 18 In some examples, the size of the central flame hole 1211 in different groups may be equal or unequal; the diameter of the central flame hole 1211 may gradually decrease from top to bottom along the axis of the central flame cap 121.

[0103] In some examples, a third protrusion may be provided on the center flame cap 121, and the third protrusion can make the pattern formed by the first protrusion 1227 and the second protrusion 1228 on the outer ring flame cap 122 match, so that it looks like a whole and has better aesthetics.

[0104] Please refer to Figure 19 Based on this, the central burner cap 121 has an annular wall 1212 near the outer ring burner cap 122, and a central burner hole 1211 is disposed on the annular wall 1212. An annular protrusion 1214 is also disposed on the annular wall 1212 of the central burner cap 121. The annular protrusion 1214 extends circumferentially around the central burner cap 121 and is disposed on the side of the central burner hole 1211 away from the burner head 11. The annular protrusion 1214 is disposed on the annular wall 1212 and located above the central burner hole 1211, so that when liquid overflows from the pot, the annular protrusion 1214 can block the overflow, preventing the overflow from clogging the central burner hole 1211 and causing a gas flow interruption.

[0105] In some examples, the annular wall 1212 is a cap-like structure located on the central flame cap 121 to prevent spillage, mainly used to protect the central flame hole 1211 on the central flame cap 121. When the burner 1 is in use, a protective device is installed inside the burner 1. The central flame cap 121 of the burner 1 is the most basic combustion zone of the flame. Regardless of the combustion mode used, the flame at the central flame hole 1211 on the central flame cap 121 is always in a combustion state.

[0106] Therefore, when the gas supply at the center burner cap 121 is interrupted, the protection device will detect this phenomenon and directly cut off the gas supply to the entire burner 1 to prevent the burner 1 from becoming dangerous. When the annular protrusion 1214 is provided above the center burner cap 121, the annular protrusion 1214 can provide corresponding protection for the center burner hole 1211.

[0107] In some examples, the burner 1 includes a central flame hole 1211, an inner ring flame hole 1225, a strip flame hole 1226, and an outer ring flame hole 1224. However, only the central flame hole 1211 has the annular protrusion 1214 to prevent liquid overflow. When liquid overflows into the inner ring flame hole 1225, the strip flame hole 1226, or the outer ring flame hole 1224, causing a flow interruption, the protection device is not triggered, and the burner 1 continues to operate normally, allowing the user to continue cooking and improving the user experience. After cooking, the user can simply clean the overflow from the inner ring flame hole 1225, the strip flame hole 1226, and the outer ring flame hole 1224.

[0108] Please refer to Figure 20 This application provides a cooktop, including a base 2, a burner 1, a panel 3, and a pot support 4. The burner 1 is the aforementioned burner 1. The panel 3 is disposed on the base 2, and the burner 1 is installed within the space formed by the base 2 and the panel 3, with a portion of the burner 1 penetrating the panel 3. The pot support 4 is disposed on the panel 3, and the pot support 4 is fitted onto the portion of the burner 1 that extends out of the panel 3. The pot is placed on the pot support 4, and the burner 1 heats the pot. Through the aforementioned multi-ring flame from the inside out, the heating area of ​​the pot can be larger, and the pot can be heated more evenly, thereby improving the heating effect of the cooktop and meeting the user's high heating power needs for stir-frying and other high-heating applications.

[0109] Please continue to refer to Figure 20 In some examples, each stove can be equipped with multiple burners 1, and each burner 1 should be equipped with a pot support 4 so that multiple burners 1 can be used simultaneously to heat multiple pots, making the pots more effective.

[0110] Please continue to refer to Figure 20 In some examples, for a typical household stove, each stove is equipped with two burners 1 and two pot supports 4 to heat two pots simultaneously.

[0111] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0112] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A burner for heating cookware, characterized in that, include: Stove head; A flame cover, disposed on the burner head, the flame cover comprising: The center flame cap is equipped with a center flame hole; An outer ring flame cap is fitted over the central flame cap. The outer ring flame cap has a top wall and an outer ring wall away from the central flame cap. An outer ring flame hole is formed on the outer ring wall, and an inner ring flame hole and a strip-shaped flame hole are formed on the top wall. The inner ring flame hole is located on the side of the top wall closer to the central flame cap, and the strip-shaped flame hole is located on the side of the inner ring flame hole away from the central flame cap, and the strip-shaped flame hole extends radially along the outer ring flame cap. The outer ring flame cap also includes a plurality of first protrusions. Each first protrusion has an inner surface facing the central flame cap, and the inner ring flame hole is located on the inner surface. Each first protrusion has at least one inner ring flame hole. The inner surface is inclined, and the distance between the edge of the inner surface near the central flame cap and the top wall is less than the distance between the edge of the inner surface away from the central flame cap and the top wall.

2. A burner according to claim 1, characterized in that, Multiple first protrusions are distributed on the top wall around the axis of the outer ring flame cap. The number of strip-shaped flame holes is set to multiple. Each of the multiple first protrusions corresponds to one of the multiple strip-shaped flame holes. The strip-shaped flame holes are disposed on the top surface of the corresponding first protrusions, and an air channel is formed between two adjacent first protrusions.

3. A burner according to claim 2, characterized in that, The top surface is an inclined surface, and along the axis of the outer ring fire cover to the outer ring wall, the top surface gradually approaches the top wall.

4. A burner according to any one of claims 2-3, characterized in that, The outer ring fire cap also includes a plurality of second protrusions, the second protrusions being triangular pyramidal in shape and disposed on the top wall; Each of the second protrusions corresponds one-to-one with a plurality of the first protrusions, and each second protrusion is located between two adjacent first protrusions, so that the plurality of second protrusions are distributed around the axis of the outer ring fire cap, and the air passage is formed between adjacent first protrusions and second protrusions.

5. A burner according to any one of claims 1-3, characterized in that, The number of outer ring flame holes is set to multiple groups, and each group of outer ring flame holes includes multiple outer ring flame holes. The multiple groups of outer ring flame holes are distributed at intervals around the axis of the outer ring flame cap, and the gap between two adjacent groups of outer ring flame holes is greater than the gap between two adjacent outer ring flame holes in the same group, so that a first air supply channel is formed between two adjacent groups of outer ring flame holes.

6. A burner according to any one of claims 1-3, characterized in that, The central flame cap has an annular wall near the outer ring flame cap, and the central flame hole is disposed on the annular wall; The central burner cap is also provided with an annular protrusion on its ring wall. The annular protrusion extends around the circumference of the central burner cap and is located on the side of the central burner hole away from the burner head.

7. A burner according to claim 6, characterized in that, The number of central flame holes is set to multiple groups, and each group of central flame holes includes multiple central flame holes. The multiple groups of central flame holes are distributed around the axis of the central flame cover.

8. A stove, characterized in that, The device includes a base, a burner, a panel, and a pot support; the burner is the burner according to any one of claims 1-7, the panel is disposed on the base, the burner is installed in the space formed by the base and the panel, and a portion of the burner penetrates the panel, the pot support is disposed on the panel, and the pot support is sleeved on the portion of the burner that extends out of the panel.

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