Flat plate type combustor and gas stove

Abstract

The embodiment of the utility model belongs to the kitchen range technology, and provides a flat plate type burner and a gas stove. The fire cover is arranged at the top of the furnace end; the fire cover comprises a first fire outlet part, the first fire outlet part is provided with a plurality of first fire ports, an included angle is formed between the depth direction of each first fire port and the vertical direction, and compared with the bottoms of the first fire ports, the tops of the first fire ports are close to the axis of the first fire outlet part; the second fire outlet part is arranged on the peripheral side of the first fire outlet part in a surrounding mode, a plurality of second fire openings are formed in the second fire outlet part, and compared with the bottoms of the second fire openings, the tops of the second fire openings are not far away from the axis of the second fire outlet part. According to the flat plate type combustor and the gas stove, the energy efficiency is good.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and in particular to a flat-plate burner and a gas stove. Background Technology

[0002] A gas stove is a common kitchen appliance used for cooking food. It produces a flame by burning natural gas, liquefied petroleum gas, or other combustible gases, thereby heating cookware.

[0003] In related technologies, gas stoves include flat-plate burners, which include burner heads, inner burner caps and outer burner caps. The top of the inner burner cap is provided with multiple first burner openings, and the top of the outer burner cap is provided with second burner openings.

[0004] However, flat-plate burners have poor energy efficiency. Utility Model Content

[0005] This application provides a flat-plate burner and a gas stove with good energy efficiency.

[0006] In a first aspect, embodiments of this application provide a flat-plate burner, comprising:

[0007] Stove head;

[0008] At least one burner cap, disposed on top of the burner head; the burner cap includes:

[0009] The first fire outlet section is provided with multiple first fire holes. The depth direction of the first fire hole forms an angle with the vertical direction, and the top of the first fire hole is closer to the axis of the first fire outlet section than the bottom of the first fire hole.

[0010] The second fire outlet is arranged around the outer periphery of the first fire outlet. The second fire outlet is provided with multiple second fire ports. Compared with the bottom of the second fire port, the top of the second fire port is not far from the axis of the second fire outlet.

[0011] The flat-plate burner provided in this application includes a burner head and at least one burner cap, with the burner cap positioned on top of the burner head. The burner cap includes a first flame outlet and a second flame outlet. The first flame outlet has multiple first flame holes, the depth direction of which forms an angle with the vertical direction, and the top of the first flame hole is closer to the axis of the first flame outlet than its bottom. The second flame outlet is arranged around the outer periphery of the first flame outlet and has multiple second flame holes. The top of the second flame hole is not far from the axis of the second flame outlet than its bottom. In this way, the flame ejected from the first flame hole is angled inwards, concentrating inwards, resulting in slower heat diffusion and better energy efficiency.

[0012] In some embodiments, the depth direction of the second vent forms an angle with the vertical direction, and the top of the second vent is closer to the axis of the second flame outlet than the bottom of the second vent.

[0013] In this way, the flames ejected from the second vent are tilted inward, the flames are concentrated inward, the heat dissipates slowly, and the energy efficiency is improved.

[0014] In some embodiments, the extension plane of the first flame outlet has a first angle with the horizontal plane, and the depth direction of the first flame outlet is perpendicular to the extension plane of the first flame outlet.

[0015] The height of the top of the side of the first fire outlet closest to the second fire outlet is higher than the height of the top of the side of the first fire outlet opposite to the second fire outlet.

[0016] Thus, compared to machining a non-vertical first flame nozzle in the first flame outlet, the machining difficulty of the first flame nozzle in this embodiment is relatively small.

[0017] In some embodiments, the extension plane of the second flame outlet has a second angle with the horizontal plane, and the depth direction of the second flame outlet is perpendicular to the extension plane of the second flame outlet.

[0018] The height of the top of the second fire exit section on the side closest to the first fire exit section is lower than the height of the top of the side of the second fire exit section away from the first fire exit section.

[0019] Thus, compared to machining a non-vertical second flame outlet in the second flame outlet section, the machining difficulty of the first flame outlet in this embodiment is relatively small.

[0020] In some embodiments, the extension plane of the second flame outlet is parallel to the horizontal plane, and the depth direction of the second flame outlet is perpendicular to the extension plane of the second flame outlet.

[0021] This helps to maintain the advantages of flat-plate burners.

[0022] In some embodiments, the second included angle is smaller than the first included angle.

[0023] The second burner section is located closer to the outside, resulting in better secondary air replenishment and enabling higher firepower. The second included angle is smaller than the first included angle, thus reducing the tilt angle of the second burner section and maintaining the advantages of flat-plate combustion.

[0024] In some embodiments, the first included angle is greater than 25° and less than 35°;

[0025] And / or, the second included angle is greater than 3° and less than 10°.

[0026] When the first included angle is less than 25°, the tilt angle of the first flame outlet is small, resulting in poor flame concentration and poor energy efficiency improvement. Moreover, the first flame outlet has a good guiding effect on the air inside the burner cap, and the air inside the burner cap tends to flow along the first flame outlet towards the second flame outlet, resulting in poor secondary air replenishment at the first burner opening and a large amount of combustion smoke.

[0027] When the first included angle is greater than 35°, the tilt angle of the first flame outlet is large, and the heat is not easily transferred upward to the cookware.

[0028] When the second included angle is less than 3°, the tilt angle of the second flame outlet is small, the effect of concentrating the flame is poor, and the energy efficiency improvement effect is poor.

[0029] When the second included angle is greater than 10°, the tilt angle of the second flame outlet is larger, and the air inside the flame cap flows from the first flame outlet to the second flame outlet. The second flame outlet occupies more secondary air, which easily reduces the amount of secondary air in the first flame outlet. When the flame in the first flame outlet burns, there is more smoke.

[0030] In some embodiments, the opening area of ​​the second burner is larger than the opening area of ​​the first burner.

[0031] The second burner, being closer to the outer edge, allows for better secondary air replenishment, thus meeting the requirement for high firepower. Therefore, a larger opening area for the second burner than the first burner improves combustion efficiency. Furthermore, this larger opening area also helps increase the flame height of the first burner and improves the consistency of flame height between the second and first burners, thereby enhancing the flat-plate combustion performance of the burner cap.

[0032] In some embodiments, the first vent is circular;

[0033] The radial dimension of the second nozzle along the second flame outlet is greater than the circumferential dimension of the second nozzle along the second flame outlet.

[0034] The first burner has less secondary air and uses a round hole structure, which improves the ejection and secondary air replenishment effects, resulting in higher utilization of secondary air. The second burner has more secondary air and uses a strip-shaped burner hole structure to meet the need for greater firepower.

[0035] In some embodiments, in the projection of the flame cap toward the horizontal plane, the size of the second flame outlet is more than twice the size of the first flame outlet along the radial direction of the flame cap.

[0036] In this way, the second burner is located close to the outside, resulting in better secondary air replenishment and enabling the achievement of high firepower requirements. The larger area of ​​the second burner also helps maintain the advantage of flat-plate combustion.

[0037] Secondly, embodiments of this application provide a gas stove, including a body and at least one of the above-mentioned flat-plate burners, the flat-plate burners being connected to the body.

[0038] In this way, the gas stove flame is concentrated inward, heat spreads slowly, and energy efficiency is improved. Attached Figure Description

[0039] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0040] Figure 1 This is a schematic diagram of the structure of a gas stove provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of the structure of a flat-plate burner provided in an embodiment of this application;

[0042] Figure 3 This is a schematic diagram of the outer flame cap in a flat-plate burner provided in an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the inner flame cap in a flat-plate burner provided in an embodiment of this application;

[0044] Figure 5 for Figure 3 Top view;

[0045] Figure 6 for Figure 3 A sectional view;

[0046] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0047] Figure 8 for Figure 4 Top view;

[0048] Figure 9 for Figure 4 A sectional view;

[0049] Figure 10 for Figure 9 A magnified view of a section at point B.

[0050] Explanation of reference numerals in the attached figures:

[0051] 100-Ontology;

[0052] 200- Flat plate burner; 210- Burner cap; 211- Inner burner cap; 212- Outer burner cap; 213- First flame outlet; 2131- First burner opening; 214- Second flame outlet; 2141- Second burner opening; 220- Furnace head. Detailed Implementation

[0053] As described in the background section, the inner burner cap has multiple first burner openings on its top, and the outer burner cap has a second burner opening on its top. The flames from both the first and second burner openings are projected vertically upwards, resulting in poor flame cohesion and rapid heat dissipation. Therefore, the flat-plate burner has poor energy efficiency.

[0054] To address the aforementioned technical problems, this application provides a flat-plate burner, comprising a burner head and at least one flame cap, the flame cap being disposed on the top of the burner head. The flame cap includes a first flame outlet and a second flame outlet. The first flame outlet has multiple first flame holes, the depth direction of which forms an angle with the vertical direction, and the top of the first flame hole is closer to the axis of the first flame outlet than its bottom. The second flame outlet is disposed around the outer periphery of the first flame outlet, and has multiple second flame holes, the top of which is not far from the axis of the second flame outlet than its bottom. In this way, the flame ejected from the first flame hole is angled inwards, concentrating inwards, resulting in slower heat diffusion and improved energy efficiency.

[0055] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0056] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0057] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0058] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] 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.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0061] 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.

[0062] Figure 1 This is a schematic diagram of the structure of a gas stove provided in an embodiment of this application.

[0063] See Figure 1 As shown, this application provides a gas stove.

[0064] In some embodiments, the gas stove includes a body.

[0065] In some embodiments, the gas stove includes a flat-plate burner. Because the surface of a flat-plate burner is relatively flat, it can better distribute the flame evenly across the bottom of the cookware, providing uniform heat output and improving cooking results.

[0066] The flat-plate burner is connected to the main body.

[0067] It should be noted that the number of flat-plate burners is at least one.

[0068] In some embodiments, the number of plate burners is at least two, and the at least two plate burners are spaced apart.

[0069] For example, the number of flat-plate burners can be one, two, three, or four, etc.

[0070] In some embodiments, the body 100 includes a housing that can accommodate and protect other devices.

[0071] In some embodiments, the housing includes a bottom shell. The bottom shell encloses a mounting cavity with an opening. The mounting cavity can be used to accommodate components such as a flat-plate burner.

[0072] Specifically, in some embodiments, the bottom shell may include a side plate and a bottom plate. The side plate is located on one side of the bottom plate and is disposed around the circumference of the bottom plate. The bottom plate and the side plate form the aforementioned mounting cavity.

[0073] For example, the base plate and side plates can form a rectangular mounting cavity. It is understood that the shape of the mounting cavity can be designed according to the actual situation, and no further limitations are made here.

[0074] In some embodiments, the housing includes a panel. The panel can be used to carry and support items.

[0075] The panel is placed on top of the bottom shell and is used to cover part of the opening in the mounting cavity.

[0076] The flat-plate burner 200 is embedded in the top of the housing. Specifically, the panel has a clearance opening to allow the flat-plate burner 200 to pass. The clearance opening allows the flat-plate burner 200 to be placed, enabling it to heat the cookware.

[0077] In some embodiments, the panel has a touch area. The touch area can be used to control the gas stove, adjust the flame, and select functions. The touch area of ​​the panel enables users to operate the gas stove conveniently, realizing intelligent operation of the gas stove.

[0078] In some embodiments, the body 100 includes an energy-concentrating pot support. The energy-concentrating pot support can concentrate energy and support the pot.

[0079] The energy-concentrating pan-pot support is sleeved on the outside of the flat-plate burner 200, and is located on the top of the shell. The bottom of the energy-concentrating pan-pot support abuts against the top of the shell.

[0080] In some embodiments, the body 100 includes a liquid collection tray. The liquid collection tray can direct liquid splashed during cooking to the top wall of the housing, thereby effectively preventing liquid from entering the interior of the housing.

[0081] The liquid collection tray is fitted around the outside of the flat-plate burner 200 and is embedded in the top of the shell.

[0082] Figure 2 This is a schematic diagram of the flat-plate burner provided in an embodiment of this application. Figure 3 This is a schematic diagram of the outer flame cap in the flat-plate burner provided in the embodiments of this application. Figure 4 This is a schematic diagram of the inner flame cover in a flat-plate burner provided in an embodiment of this application.

[0083] See Figures 2 to 4 As shown, this application embodiment provides a flat-plate burner 200, which can be used to generate flames and heat to heat cookware.

[0084] In some embodiments, the flat-plate burner 200 includes a burner head 220.

[0085] In some embodiments, the flat-plate burner 200 includes at least one flame cap 210.

[0086] The burner cap 210 is located on top of the burner head 220.

[0087] It should be noted that the number of flame caps 210 can be one, two, or three, etc.

[0088] Specifically, there can be two flame covers 210, which include an inner flame cover 211 and an outer flame cover 212. The inner flame cover 211 is located within the area enclosed by the outer flame cover 212.

[0089] Figure 5 for Figure 3 Top view, Figure 6 for Figure 3 sectional view, Figure 7 for Figure 6 A magnified view of a portion of point A in the middle. Figure 8 for Figure 4 Top view, Figure 9 for Figure 4 sectional view, Figure 10 for Figure 9 A magnified view of a section at point B.

[0090] See Figures 5 to 10 As shown, in some embodiments, the flame cap 210 includes a first flame outlet 213.

[0091] The first flame outlet 213 is provided with multiple first flame ports 2131. Specifically, the first flame outlet 213 may be annular.

[0092] The depth direction of the first vent 2131 forms an angle with the vertical direction, and compared to the bottom of the first vent 2131, the top of the first vent 2131 is closer to the axis of the first flame outlet 213. That is to say, the first vent 2131 is inclined inward, and the flame ejected from the first vent 2131 is inclined inward. In this way, the flame is concentrated inward, the heat diffusion is slow, and the energy efficiency is improved.

[0093] Specifically, the vertical direction is the direction shown by the Z-axis in the figure. When the first nozzle 2131 is a circular hole, the depth direction of the first nozzle 2131 is the axial direction of the first nozzle 2131.

[0094] In some embodiments, the flame cap 210 includes a second flame outlet 214.

[0095] The second flame outlet 214 is arranged around the outer periphery of the first flame outlet 213, and the second flame outlet 214 is provided with a plurality of second flame ports 2141. Specifically, the second flame outlet 214 can be annular.

[0096] Specifically, compared to the bottom of the second fire port 2141, the top of the second fire port 2141 is not far from the axis of the second fire outlet 214.

[0097] In some embodiments, the depth direction of the second burner 2141 forms an angle with the vertical direction, and the top of the second burner 2141 is closer to the axis of the second flame outlet 214 than the bottom of the second burner 2141. That is, the second burner 2141 is tilted inwards, and the flame ejected from the second burner 2141 is tilted inwards. This concentrates the flame inwards, slows heat diffusion, and improves energy efficiency.

[0098] In other embodiments, the depth direction of the second vent 2141 is consistent with the vertical direction.

[0099] Specifically, the vertical direction is the direction shown by the Z-axis in the figure.

[0100] Understandably, compared to conventional outward or upward flames, the flames ejected from the first burner 2131 and the second burner 2141 in this embodiment are angled inward, concentrating the flames inward, resulting in slower heat diffusion and better energy efficiency.

[0101] In some embodiments, the extending plane of the first flame outlet 213 has a first angle c with the horizontal plane, and the depth direction of the first flame port 2131 is perpendicular to the extending plane of the first flame outlet 213. Thus, compared to machining a non-perpendicular first flame port 2131 in the first flame outlet 213, the machining difficulty of the first flame port 2131 in this embodiment is relatively small.

[0102] The extended plane of the first firing section 213 is shown as g in the figure.

[0103] The height of the top of the first fire exit section 213 on the side closer to the second fire exit section 214 is higher than the height of the top of the side of the first fire exit section 213 away from the second fire exit section 214.

[0104] In some embodiments, the extending plane of the second flame outlet 214 has a second included angle d with the horizontal plane, and the depth direction of the second flame port 2141 is perpendicular to the extending plane of the second flame outlet 214. Thus, compared to machining the non-perpendicular second flame port 2141 in the second flame outlet 214, the machining difficulty of the first flame port 2131 in this embodiment is relatively small.

[0105] The extension plane of the second firing section 214 is shown as h in the figure. The horizontal plane is the plane formed by the X-axis and Y-axis directions shown in the figure.

[0106] The height of the top of the second fire exit section 214 on the side closest to the first fire exit section 213 is lower than the height of the top of the side of the second fire exit section 214 away from the first fire exit section 213.

[0107] It is understandable that when the first flame outlet 213 is tilted, the second flame outlet 214 and the first flame outlet 213 are not on the same horizontal plane, which is conducive to the air outside the flame cap flowing from the second flame outlet 214 toward the first flame outlet 213, and can improve the secondary air replenishment effect of the first flame outlet 2131.

[0108] Furthermore, when both the first flame outlet 213 and the second flame outlet 214 are inclined, the air inside the flame cap flows along the first flame outlet 213 toward the second flame outlet 214, which can improve the secondary air replenishment effect of the first flame outlet 2131 and the second flame outlet 2141.

[0109] In some embodiments, the top of the second flame outlet 214 on the side near the first flame outlet 213 is at the same height as the top of the first flame outlet 213 on the side near the second flame outlet 214.

[0110] The height direction is the direction shown by the Z-axis in the figure.

[0111] In some embodiments, the extension plane of the second flame outlet 214 is parallel to the horizontal plane, and the depth direction of the second flame port 2141 is perpendicular to the extension plane of the second flame outlet 214.

[0112] This helps to maintain the advantages of flat-plate burners.

[0113] In some embodiments, the extended plane of the second flame outlet 214 of the inner flame cover 211 is parallel to the horizontal plane.

[0114] In some embodiments, the second included angle d is smaller than the first included angle c.

[0115] Understandably, the second flame outlet 214 is located closer to the outside, resulting in better secondary air replenishment and enabling it to meet the demand for high firepower. The second included angle d is smaller than the first included angle c, thus the tilt angle of the second flame outlet 214 is smaller, which helps maintain the advantages of flat-plate combustion.

[0116] In some embodiments, the first included angle c is greater than 25° and less than 35°.

[0117] In some embodiments, the first included angle c is 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33° or 34°.

[0118] When the first included angle c is less than 25°, the tilt angle of the first flame outlet 213 is small, resulting in poor flame concentration and poor energy efficiency improvement. Moreover, the first flame outlet 213 has a good guiding effect on the air inside the burner cap 210, and the air inside the burner cap 210 tends to flow along the first flame outlet 213 toward the second flame outlet 214. This results in poor secondary air replenishment at the first burner opening 2131 and a large amount of combustion smoke.

[0119] When the first included angle c is greater than 35°, the tilt angle of the first flame outlet 213 is large, and the heat is not easily transferred upward to the cookware.

[0120] In some embodiments, the second included angle d is greater than 3° and less than 10°.

[0121] When the second included angle d is less than 3°, the tilt angle of the second flame outlet 214 is small, the effect of concentrating the flame is poor, and the energy efficiency improvement effect is poor.

[0122] When the second included angle d is greater than 10°, the tilt angle of the second flame outlet 214 is larger, and the air inside the flame cap 210 flows along the first flame outlet 213 toward the second flame outlet 214. The second flame outlet 2141 occupies more secondary air, which easily causes the amount of secondary air in the first flame outlet 2131 to decrease. When the flame in the first flame outlet 2131 burns, the smoke is larger.

[0123] In some embodiments, the second included angle d is 4°, 5°, 6°, 7°, 8° or 9°.

[0124] In some embodiments, the opening area of ​​the second vent 2141 is larger than the opening area of ​​the first vent 2131.

[0125] It should be noted that the opening area is the cross-sectional area along the section perpendicular to the depth direction.

[0126] Understandably, the second burner 2141, being closer to the outer edge, provides better secondary air replenishment, thus meeting the requirement for high firepower. Therefore, having a larger opening area for the second burner 2141 than the first burner 2131 is beneficial for improving combustion efficiency. Furthermore, this larger opening area also helps to increase the flame height of the first burner 2131 and improves the consistency of flame height between the second and first burners 2141, thereby enhancing the flat-plate combustion performance of the burner cap 210.

[0127] See Figure 5 As shown, in some embodiments, in the projection of the flame cap 210 toward the horizontal plane, along the radial direction of the flame cap 210, the size e of the second flame outlet 214 is more than twice the size f of the first flame outlet 213.

[0128] Understandably, the second flame outlet 214 is located close to the outside, resulting in better secondary air replenishment and enabling it to meet the demand for high firepower. In the projection of the flame cap 210 toward the horizontal plane, along the radial direction of the flame cap 210, the dimension e of the second flame outlet 214 is more than twice the dimension f of the first flame outlet 213. Thus, the second flame outlet 214 has a larger area, which is beneficial for maintaining the advantage of flat-plate combustion.

[0129] In some embodiments, the first vent 2131 is circular.

[0130] The symmetry of a circular burner orifice results in more uniform and stable gas flow. This symmetry helps create a uniform airflow, reducing turbulence and irregular flow, thereby improving the initial mixing efficiency of fuel gas and primary air. Furthermore, the boundary layer of a circular orifice is relatively small, meaning that the gas experiences less frictional resistance as it passes through the orifice. Lower frictional resistance can increase the flow velocity of the fuel gas, thus enhancing its mixing with primary air. A circular burner orifice also provides a more uniform velocity distribution, which helps create a consistent negative pressure area around the orifice, thus more effectively entraining secondary air into the combustion zone. Moreover, a circular burner orifice typically produces a more stable flame shape, helping to maintain flame stability and combustion efficiency. This stability contributes to more efficient utilization of secondary air, as the flame can better cover and utilize the incoming air.

[0131] Furthermore, round burners are generally easier to manufacture with precise dimensional control, ensuring consistent performance across each burner. In addition, round holes are less prone to accumulating dirt during use, making maintenance relatively simple.

[0132] In some embodiments, the radial dimension of the second fire port 2141 along the second fire outlet 214 is greater than the circumferential dimension of the second fire port 2141 along the second fire outlet 214.

[0133] Specifically, the second crater 2141 is elongated.

[0134] Understandably, the first blast hole 2131 has less secondary air and uses a round hole structure, which improves its ejection and secondary air replenishment effects, resulting in higher utilization of secondary air. The second blast hole 2141 has more secondary air and uses a strip-shaped blast hole structure to meet the requirement of high firepower.

[0135] It should be noted that, due to the height difference between the first flame outlet 213 and the second flame outlet 214 of the flame cap 210, the second flame port 2141 is machined by cutting grooves with a lathe tool, while the first flame port 2131 is machined by drilling. Compared with the machining methods in related technologies that all require cutting grooves with a lathe tool, the machining process and implementation path of the flame cap 210 provided in this application are simpler.

[0136] In some embodiments, a plurality of first flame ports 2131 are arranged at circumferential intervals along the first flame outlet 213. This is advantageous for increasing the number of first flame ports 2131 provided.

[0137] Specifically, the first flame port 2131 on the inner flame cover 211 is arranged at intervals along the circumference of the first flame outlet 213.

[0138] In some embodiments, a plurality of first flame ports 2131 are arranged in a circumferential and radial array along the first flame outlet 213. This is advantageous for increasing the number of first flame ports 2131 provided.

[0139] Specifically, the first flame holes 2131 on the outer flame cap 212 are arranged in a circumferential and radial array along the first flame outlet 213.

[0140] In some embodiments, a plurality of second flame ports 2141 are arranged at circumferential intervals along the second flame outlet 214. This is advantageous for increasing the number of second flame ports 2141 provided.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0142] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A flat burner, characterized by The burner head (220) comprises: a fire cover (210) disposed on top of the burner head (220); the fire cover (210) comprises: a first fire outlet portion (213) provided with a plurality of first fire ports (2131) at intervals, the depth direction of the first fire ports (2131) has an angle with the vertical direction, and the top of the first fire ports (2131) is closer to the axis of the first fire outlet portion (213) compared to the bottom of the first fire ports (2131); a second fire outlet portion (214) disposed around the outer circumferential side of the first fire outlet portion (213), the second fire outlet portion (214) is provided with a plurality of second fire ports (2141) at intervals, and the top of the second fire ports (2141) is not far away from the axis of the second fire outlet portion (214) compared to the bottom of the second fire ports (2141). the depth direction of the second fire ports (2141) has an angle with the vertical direction, and the top of the second fire ports (2141) is closer to the axis of the second fire outlet portion (214) compared to the bottom of the second fire ports (2141).

2. Flat burner according to claim 1, characterized in that the first fire outlet portion (213) has a first angle with the horizontal plane, and the depth direction of the first fire ports (2131) is perpendicular to the extension plane of the first fire outlet portion (213); 3. The flat burner according to claim 1, characterized in that the height of the top of the side of the first fire outlet portion (213) close to the second fire outlet portion (214) is higher than the height of the top of the side of the first fire outlet portion (213) away from the second fire outlet portion (214). the second fire outlet portion (214) has a second angle with the horizontal plane, and the depth direction of the second fire ports (2141) is perpendicular to the extension plane of the second fire outlet portion (214); 4. The flat burner according to claim 3, characterized in that the height of the top of the side of the second fire outlet portion (214) close to the first fire outlet portion (213) is lower than the height of the top of the side of the second fire outlet portion (214) away from the first fire outlet portion (213). the extension plane of the second fire outlet portion (214) is parallel to the horizontal plane, and the depth direction of the second fire ports (2141) is perpendicular to the extension plane of the second fire outlet portion (214).

5. The flat burner according to claim 1, characterized in that the second angle is smaller than the first angle.

6. The flat burner according to claim 4, characterized in that the first angle is greater than 25° and less than 35°; 7. The flat burner according to claim 4, characterized in that and / or, the second angle is greater than 3° and less than 10°. the opening area of the second fire ports (2141) is greater than the opening area of the first fire ports (2131).

8. Flat burner according to any one of claims 1 to 7, characterized in that the first fire ports (2131) are circular; 9. Flat burner according to any one of claims 1 to 7, characterized in that the size of the second fire ports (2141) along the radial direction of the second fire outlet portion (214) is greater than the size of the second fire ports (2141) along the circumferential direction of the second fire outlet portion (214). in the projection of the fire cover (210) toward the horizontal plane, the size of the second fire outlet portion (214) along the radial direction of the fire cover (210) is greater than twice the size of the first fire outlet portion (213).

10. Flat burner according to any one of claims 1 to 7, characterized in that ​ 11. A gas hob, characterized in that A flat burner (200) according to any one of claims 1 to 10 is included in a body (100) to which the flat burner (200) is connected.

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