Combustor

Abstract

The burner comprises a fire cover, a base and an air inducing piece, and two fire holes are formed in the fire cover at intervals in the radial direction of the fire cover; the base is provided with injection channels, gas mixing cavities and air inducing cavities, the injection channels, the gas mixing cavities and the fire holes are in one-to-one correspondence, the corresponding injection channels, the corresponding gas mixing cavities and the corresponding fire holes are sequentially communicated, the air inducing cavities are communicated with one gas mixing cavity, and the air inducing pieces are communicated with the air inducing cavities.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, and in particular relates to a burner. Background Technology

[0002] In related technologies, the burner's ignition adjustment process often involves adjusting the air intake of the control fan, which is complex. Summary of the Invention

[0003] This application aims to at least partially solve the technical problem of complex control of the ignition process in burners. To this end, this application provides a burner.

[0004] This application provides a burner comprising: a burner cap having two flame holes spaced apart along its radial direction; a base having an ejector channel, a mixing chamber, and an induced draft chamber, wherein the ejector channel, the mixing chamber, and the flame holes correspond one-to-one, and the corresponding ejector channel, the mixing chamber, and the flame holes are sequentially connected, and the induced draft chamber is connected to one of the two mixing chambers; and an induced draft element disposed within the induced draft chamber.

[0005] The burner provided in this application features a one-to-one correspondence between the ejector channel, mixing chamber, and flame hole. Therefore, the combustion gas can be drawn to the flame hole through the ejector channel and mixing chamber. Since the induced draft chamber is connected to one of the mixing chambers, and the induced draft element is located within the induced draft chamber, air can be drawn through the induced draft chamber and mixing chamber to one of the flame holes through the operation of the induced draft element. With this configuration, the induced draft element always operates at the set power during the burner's ignition adjustment process. The burner's flame output can be adjusted simply by controlling the opening and closing of the ejector channel. The control logic is simple and highly practical.

[0006] In some implementations, the two flame holes are configured as an inner ring flame hole and an outer ring flame hole, respectively, with the inner ring flame hole connected to the mixing chamber and the induced draft chamber via a gas mixing chamber.

[0007] In some implementations, the two flame holes are configured as an inner ring flame hole and an outer ring flame hole, respectively, with the outer ring flame hole connected to the mixing chamber and the induced draft chamber via a gas mixing chamber.

[0008] In some embodiments, at least a portion of the ignition end of the inner ring ignition hole is disposed above the ignition end of the outer ring ignition hole.

[0009] In some implementations, the flame cap is further provided with a flame outlet groove, and the outer ring flame hole is connected to the bottom of the flame outlet groove.

[0010] In some implementations, the base is provided with a first cavity and a second cavity, the air intake cavity and the first cavity are connected to the corresponding mixing cavity, and the ejection channel and the second cavity are connected to the corresponding mixing cavity.

[0011] In some embodiments, a first nozzle is provided on the side wall of the second cavity facing the connected mixing chamber.

[0012] In some implementations, the air intake chamber is arranged opposite to the ejection channel that connects to the first chamber.

[0013] In some embodiments, the base is provided with a transfer cavity, which is connected to the corresponding ejector channel and the gas mixing chamber.

[0014] In some implementations, a second nozzle is provided on the side wall of the transfer chamber facing the connected mixing chamber. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments 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 without creative effort.

[0016] Figure 1 A schematic diagram of a burner is shown.

[0017] Figure 2 It shows Figure 1 A top view of the burner.

[0018] Figure 3 It shows Figure 2 AA sectional view.

[0019] Figure 4 It shows Figure 2 BB cross-sectional view.

[0020] Figure 5 It shows Figure 3 CC section view.

[0021] Figure 6 It shows Figure 1 A schematic diagram of the burner cap structure.

[0022] Figure 7 It shows Figure 6 Another structural diagram of the fire cap from another angle.

[0023] Figure 8 It shows Figure 1 A schematic diagram of the structure of the first support of the burner.

[0024] Figure 9 It shows Figure 1A schematic diagram of the structure of the second support of the burner.

[0025] Figure 10 It shows Figure 9 A structural diagram of the second support from another angle.

[0026] Figure 11 A schematic diagram showing the flow of gas and air through the inner ring ignition port is provided.

[0027] Figure 12 A schematic diagram showing the flow of combustion gas and air through the outer ring burner hole is shown.

[0028] Figure label:

[0029] 100-Burner, 110-Flame cap, 111-Flame hole, 111a-Inner ring flame hole, 111b-Outer ring flame hole, 112-Flame outlet groove, 113-Upper inner ring groove, 114-Upper outer ring groove, 115-Flame outlet surface, 116-Top surface, 120-Base, 121-First support, 122-Second support, 1221-Lower inner ring groove, 1222-Lower outer ring groove, 123-Induced air chamber, 124-Injector channel, 124a - First ejector channel, 124b - Second ejector channel, 1241 - Gas inlet, 125 - First cavity, 126 - Second cavity, 1261 - Connecting hole, 127 - Transfer cavity, 128 - Mixing cavity, 128a - First mixing cavity, 128b - Second mixing cavity, 1281 - Air inlet, 130 - Air duct, 140 - First nozzle, 150 - Second nozzle; 101 - Inner annular cavity, 102 - Outer annular cavity. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] In related technologies, top-intake burners are burners with the injector tube located above the cooktop panel, offering advantages such as safety, reduced internal cooktop temperature rise, and reduced cabinet space occupation. However, because the entire burner is positioned above the cooktop panel, it faces space limitations due to the need to balance aesthetics and operating height. This results in insufficient injector capacity, inadequate air supply, incomplete combustion leading to low thermal efficiency and high flue gas emissions. To address these issues, this type of burner typically includes a blower to supplement the primary air supply and improve combustion efficiency. However, in practice, ignition control is usually achieved by adjusting the blower's airflow, presenting complex technical challenges.

[0035] To address the aforementioned technical problems, this application provides a burner that eliminates the need to adjust the fan airflow during burner ignition adjustment. Normal combustion of the stove can be achieved solely through a single airflow, simplifying control and thus resolving, to some extent, the complex technical problem of adjusting the burner's flame using a fan. This application is described below with reference to the accompanying drawings and specific embodiments.

[0036] Figure 1 and Figure 2 A schematic diagram of the burner 100 is shown, combined with Figure 1 as well as Figure 2The burner 100 provided in this application includes a base 120, a flame cap 110, and an induced draft fan 130. The base 120 serves as the mounting foundation for the burner 100, supporting and fixing the flame cap 110 and the induced draft fan 130. Combined with... Figure 3 as well as Figure 4 The base 120 is provided with an ejector channel 124, a mixing chamber 128 and an air duct 123. The ejector channel 124 is a gas flow channel. The ejector channel 124 is connected to the mixing chamber 128. The gas can enter the mixing chamber 128 from the ejector channel 124 and mix with the air entering the mixing chamber 128.

[0037] The burner cap 110 is the outlet for the mixture of fuel gas and air. Generally, the burner cap 110 is circular, but it can also be rectangular, depending on the requirements. Please refer to... Figure 1 Along the radial direction of the flame cap 110, the flame cap 110 is provided with two flame holes 111 at intervals, which will form two rings of mixed gas outlets. The corresponding ejector channel 124 and mixing chamber 128 are also provided with two. The ejector channel 124, mixing chamber 128 and flame hole 111 are connected in sequence, thus forming two flow paths for forming mixed gas. The air duct 123 is connected to one of the two mixing chambers 128. The air duct 130, such as an induced draft fan or a blower, is connected to the air duct 123. Therefore, the air in one flow path is provided by the air duct 130, and the air in the other flow path is provided by natural air.

[0038] During the combustion process of the burner 100, the induced draft fan 130 can always operate at the set power. When both ejector channels 124 are open, the burner 100 provides a large flame. When one of the ejector channels 124 is closed, the burner 100 provides a small flame. In other words, the combustion can be adjusted by opening and closing the ejector channel 124 to adjust the flame output of the burner 100. The control logic is simple and highly practical.

[0039] For ease of explanation, the two spaced flame holes 111 are defined as inner ring flame hole 111a and outer ring flame hole 111b, respectively. After understanding the inner ring flame hole 111a and outer ring flame hole 111b, the specific details of the base 120 and the flame cover 110 will be described in detail below.

[0040] The flame cap 110 serves as the outlet structure for the gas mixture. In some embodiments, please refer to... Figure 3The inner ring flame port 111a of the burner cap 110 can be connected to the air intake chamber 123 through the mixing chamber 128. The inner ring flame port 111a uses gas to inject induced air to supply the gas mixture, while the outer ring flame port 111b uses gas to inject natural air to supply the gas mixture, thus achieving combustion of the gas. In other embodiments, the outer ring flame port 111b of the burner cap 110 can be connected to the air intake chamber 123 through the mixing chamber 128. The outer ring flame port 111b uses gas to inject induced air to supply the gas mixture, while the inner ring flame port 111a uses gas to inject natural air to supply the gas mixture, thus achieving combustion of the gas.

[0041] In some embodiments, please continue to combine Figure 3 At least a portion of the outlet end of the inner ring flame hole 111a is positioned above the outlet end of the outer ring flame hole 111b. Specifically, the entire outlet end of the inner ring flame hole 111a is located above the outlet end of the outer ring flame hole 111b, or a portion of the outlet end of the inner ring flame hole 111a is located above the outlet end of the outer ring flame hole 111b, while the height of the other portion is lower than the outlet end of the outer ring flame hole 111b. With the outlet end of the inner ring flame hole 111a being higher and the outlet end of the outer ring flame hole 111b being lower, when both the inner and outer ring flame holes 111a and 111b of the burner 100 are operating, the flame tip of the outer ring flame hole 111b will pull back the flame root of the inner ring flame hole 111a, maintaining the flame's position and volume, making it less prone to backfire and flame detachment, thereby improving flame stability.

[0042] In addition, when the outer ring burner 111b is connected to the induced draft chamber 123 through a mixing chamber 128, and both the inner ring burner 111a and the outer ring burner 111b are working, the induced draft fan's air volume is higher than the natural air volume. Therefore, the amount of air in the mixture of the outer ring burner 111b is higher than the amount of air in the mixture of the inner ring burner 111a. The ignition end of the outer ring burner 111b is lower, and the air discharged from the outer ring burner 111b will flow upward as a supplement to the air in the inner ring burner 111a, which is more conducive to the combustion of the gas in the inner ring burner 111a and improves the combustion efficiency.

[0043] In other embodiments, the flaming end of the inner ring flame hole 111a is lower than the flaming end of the outer ring flame hole 111b, which can also be achieved by opening and closing only the ejector channel 124 to adjust the combustion flame.

[0044] In some embodiments, please combine Figure 3 The axis of the inner ring flame hole 111a is inclined relative to the axis of the flame cap 110. The flame outlet end of the inner ring flame hole 111a is away from the axis of the flame cap 110 and faces outward, which facilitates the outward extension of the flame, increases the heating area of ​​the heated item such as a pot, and improves the heat utilization rate. The angle between the axis of the inner ring flame hole 111a and the axis of the flame cap 110 can be 10° to 60°, such as 15°, 30° or 45°.

[0045] The inner ring flame hole 111a can be cylindrical or prismatic, such as a cuboid or pentagonal prism. The diameter of the inner ring flame hole 111a can be fixed or can increase gradually towards the flame outlet end, that is, the diameter of the inner ring flame hole 111a is smaller at the end near the mixing chamber 128 and larger at the flame outlet end.

[0046] The outer ring flame hole 111b can be similar to the inner ring flame hole 111a, with its axis inclined relative to the axis of the flame cap 110. The flame outlet of the outer ring flame hole 111b is far from the axis of the flame cap 110 and faces outward, which facilitates the outward extension of the flame, increases the heating area of ​​the heated item such as a pot, and improves heat utilization. The angle between the axis of the outer ring flame hole 111b and the axis of the flame cap 110 can be referred to the description of the angle between the inner ring flame hole 111a and the axis of the flame cap 110, and further details will not be elaborated here.

[0047] The axes of the inner ring flame port 111a and the outer ring flame port 111b can be parallel to each other. For example, both the inner ring flame port 111a and the outer ring flame port 111b can be inclined at the same angle relative to the axis of the flame cap 110, or the axes of both the inner ring flame port 111a and the outer ring flame port 111b can be vertical. The parallel arrangement of the inner ring flame port 111a and the outer ring flame port 111b ensures that the combustion direction of the gas mixture is the same, allowing them to interact and stabilize the flame.

[0048] Of course, the inner ring fire hole 111a can also have an angle with the outer ring fire hole 111b. For example, please refer to... Figure 3 The inner ring flame hole 111a is inclined relative to the axis of the flame cap 110, and the outer ring flame hole 111b is vertically arranged; or the inner ring flame hole 111a is vertically arranged, and the outer ring flame hole 111b is inclined relative to the axis of the flame cap 110; or both the inner ring flame hole 111a and the outer ring flame hole 111b are inclined relative to the axis of the flame cap 110, but the inclination angles of the two are different.

[0049] The diameters of the inner ring flame hole 111a and the outer ring flame hole 111b can be the same or different. In some embodiments, among the two flame holes 111, the diameter of the flame hole 111 corresponding to the air duct 123 is larger than the diameter of the other flame hole 111. That is, when the inner ring flame hole 111a is connected to the air duct 123 through the mixing chamber 128, the diameter of the inner ring flame hole 111a is larger than the diameter of the outer ring flame hole 111b. When the outer ring flame hole 111b is connected to the air duct 123 through the mixing chamber 128, the diameter of the outer ring flame hole 111b is larger than the diameter of the inner ring flame hole 111a.

[0050] Taking the example where the diameter of the inner ring burner hole 111a is larger than that of the outer ring burner hole 111b: When using gas to inject natural air, the mixture volume is large, and the diameter of the inner ring burner hole 111a is large, matching the large volume of the mixture. When using gas to inject natural air, the mixture volume is small, and the diameter of the outer ring burner hole 111b is small, matching the small volume of the mixture. This allows for more precise flame control, more complete combustion, and reduced carbon monoxide emissions.

[0051] In some embodiments, please combine Figure 3 The burner cap 110 is provided with a flame outlet groove 112, and the outer ring flame holes 111b are connected to the bottom of the flame outlet groove 112, forming a structure in which the outer ring flame holes 111b are recessed into the top surface 116 of the burner cap 110, so that the gas mixture in the outer ring flame holes 111b is discharged and burned at the opening of the flame outlet groove 112. The setting of the flame outlet groove 112 increases the space, and the gas mixture flows in the flame outlet groove 112, forming flame strips distributed along the extension direction of the flame outlet groove 112. The flame strips surround the flame of the inner ring flame holes 111a. The flame outlet end of the inner ring flame holes 111a is at least partially located on the upper part of the flame outlet groove 112. Therefore, the top of the flame strips can hold the flame root of the inner ring flame holes 111a, thereby achieving the effect of stabilizing the flame of multiple inner ring flame holes 111a.

[0052] In some embodiments, the flame outlet groove 112 can be an annular groove coaxial with the flame cap 110, and the flame of the outer annular flame hole 111b is annular, which can stabilize the flame of the inner annular flame hole 111a. In other embodiments, multiple flame outlet grooves 112 can be provided, and multiple flame outlet grooves 112 are arranged at intervals along the circumference of the flame cap 110. The inner annular flame holes 111a can be divided into multiple groups, and the number of groups of inner annular flame holes 111a is the same as the number of flame outlet grooves 112, and they correspond one-to-one. The flame outlet groove 112 is arranged around the inner annular flame holes 111a of the corresponding group, which can also achieve flame stabilization of all inner annular flames. Of course, a flame outlet groove 112 can also be arranged around multiple groups of inner annular flame holes 111a, which can be adjusted according to actual conditions, and this application does not impose any restrictions.

[0053] Similar to the inner ring flame hole 111a, the flame outlet direction of the flame outlet groove 112 can be inclined relative to the axis of the flame cap 110. The opening of the flame outlet groove 112 is set outward, which facilitates the outward extension of the flame, increases the heating area of ​​the heated item such as a pot, and improves the heat utilization rate. The flame outlet direction of the flame outlet groove 112 can be parallel to the flame outlet direction of the inner ring flame hole 111a, or it can be at an angle to each other; further details will not be elaborated here.

[0054] In some embodiments, please combine Figure 6The burner cap 110 has a flame-emission surface 115. The flame-emission ends of the inner ring flame holes 111a and the flame-emission groove 112 are all located on the flame-emission surface 115. The flame-emission surface 115 is inclined relative to the axis of the burner cap 110, so that the flame-emission ends of the inner ring flame holes 111a are at least partially located above the flame-emission ends of the flame-emission groove 112. The top surface 116 of the burner cap 110 intersects with the flame-emission surface 115, and the inner ring flame holes 111a are located at the intersection of the top surface 116 and the flame-emission surface 115, so as to shorten the distance between the flame and the cookware and improve the heat utilization rate.

[0055] The base 120 serves as the mounting base. Since the burner cap 110 has two burner holes 111, there are also two injection channels 124 for supplying gas and two mixing chambers 128 for mixing air and gas. The two injection channels 124 are defined as the first injection channel 124a and the second injection channel 124b, respectively. The two mixing chambers 128 are the first mixing chamber 128a and the second mixing chamber 128b, respectively. The first injection channel 124a is connected to the inner ring burner hole 111a through the first mixing chamber 128a, and the second injection channel 124b is connected to the outer ring burner hole 111b through the second mixing chamber 128b. The air intake chamber 123 of the base 120 can be connected to the inner ring flame hole 111a through the first mixing chamber 128a, or it can be connected to the outer ring flame hole 111b through the second mixing chamber 128b. For ease of explanation, the following text will take the connection between the air intake chamber 123 and the inner ring flame hole 111a through the first mixing chamber 128a as an example for detailed explanation.

[0056] For the gas and air supply to the inner ring fire hole 111a:

[0057] Please combine Figure 3 The air duct 123 serves as the mounting structure for the air duct 130 that supplies air. The air duct 123 is arranged opposite to the first ejection channel 124a. This arrangement allows the air duct 123 to have sufficient space to increase the air volume of the air duct 123 and improve the air ducting effect.

[0058] In other embodiments, the air duct 123 and the first ejection channel 124a can also be arranged close to each other, which can also realize the arrangement of the air duct 123 and the first ejection channel 124a. When the air duct 123 and the first ejection channel 124a are arranged close to each other, they can be arranged sequentially along the height direction, which can also provide a large-sized air duct 123.

[0059] Please continue to combine Figure 3The base 120 is provided with a first cavity 125 and a second cavity 126. The induced draft cavity 123, the first cavity 125, and the first mixing cavity 128a are sequentially connected, so that the air supplied by the induced draft fan enters the first mixing cavity 128a through the first cavity 125. The first cavity 125 serves as a transfer structure between the induced draft cavity 123 and the first mixing cavity 128a, realizing the connection between the induced draft cavity 123 and the first mixing cavity 128a. The induced draft cavity 123 can also be set according to the spatial arrangement, improving the design flexibility of the burner 100. The first ejector channel 124a, the second cavity 126, and the first mixing cavity 128a are sequentially connected, so that the gas enters the first mixing cavity 128a through the first ejector channel 124a and the second cavity 126. The second cavity 126 serves as a transfer structure between the first air intake channel and the first mixing chamber 128a, enabling the connection between the first air intake channel and the first mixing chamber 128a. The first air intake channel can also be set according to the spatial arrangement, improving the design flexibility of the burner 100.

[0060] Please continue to combine Figure 3 The first cavity 125 and the second cavity 126 can be arranged side by side along the radial direction of the burner cap 110, which not only realizes the flow channel design for the gas supply and induced draft air, but also saves space. Of course, the first cavity 125 and the second cavity 126 can also adopt other arrangements, such as arranging the first cavity 125 and the second cavity 126 on both sides of the radial direction of the burner cap 110, which can also realize the flow channel design for the gas supply and induced draft air.

[0061] The first cavity 125 and the second cavity 126 can be configured as either a long and narrow channel or a wide channel. The specific shape can be adjusted according to the space, and this application does not impose any restrictions.

[0062] Along the flow direction perpendicular to their respective internal media, the cross-sectional area of ​​the first cavity 125 is larger than that of the second cavity 126. The first cavity 125 receives airflow from the induced draft fan, resulting in a large flow rate. The large cross-sectional area of ​​the first cavity 125 matches the large flow rate of air, ensuring sufficient air supply to the inner ring flame hole 111a. The second cavity 126 receives gas flow, which has a small flow rate. The small cross-sectional area of ​​the second cavity 126 matches the small flow rate of gas, thus not wasting space while meeting the gas delivery requirements.

[0063] Please combine Figure 3 The second cavity 126 has a first nozzle 140 on its side wall facing the connected first mixing cavity 128a. The first nozzle 140 is an ejector nozzle, and its outlet diameter is smaller than the inlet diameter so that the gas is accelerated out. The ejector air 130 provides the induced air and supplies it to the inner ring flame hole 111a.

[0064] Please combine Figure 5The second chamber 126 is connected to the first mixing chamber 128a through a connecting hole 1261, which corresponds to the middle position of the first nozzle 140. The output end of the first nozzle 140 extends into the first mixing chamber 128a. The gas in the second chamber 126 is injected at high speed into the first mixing chamber 128a through the first nozzle 140, and then the exhaust air around the first nozzle 140 is drawn in, and energy is exchanged between the two. The gas is then uniformly mixed and flows within the first mixing chamber 128a to the inner ring flame hole 111a for combustion. The first mixing chamber 128a can be a channel-shaped chamber, which occupies less space and has a more compact structure.

[0065] In some embodiments, multiple connecting holes 1261 may be provided, such as two, three, or four. These multiple connecting holes 1261 surround the periphery of the first nozzle 140, which not only allows for the installation of the first nozzle 140 but also improves the ejection effect. In some embodiments, please refer to... Figure 5 Two connecting holes 1261 are provided, and the two connecting holes 1261 are located on both sides of the first nozzle 140 in the radial direction. The number of connecting holes 1261 is relatively small, which not only does not occupy too much space, but also ensures a sufficient supply of ejector air.

[0066] For the gas and air supply to the outer ring fire hole 111b:

[0067] Please combine Figure 4 The base 120 is provided with a transfer chamber 127, which is connected to the second ejector channel 124b and the second mixing chamber 128b. The second ejector channel 124b, the transfer chamber 127, and the second mixing chamber 128b are sequentially connected to form a channel for the gas to flow through the outer ring flame hole 111b. The transfer chamber 127 connects the second ejector channel 124b and the second mixing chamber 128b, and the second air duct can be set according to the spatial arrangement, which improves the design flexibility of the burner 100.

[0068] The transfer cavity 127 can be similar to the first cavity 125 and the second cavity 126, and can be set as a long and narrow channel shape, or it can be set as a large space shape. The shape can be adjusted according to the spatial arrangement of each structure, and this application does not impose any restrictions.

[0069] The extension direction of the transfer chamber 127 can be the same as that of the first chamber 125 and the second chamber 126, for example, both extending along the height direction. This allows the transfer chamber 127, the first chamber 125, and the second chamber 126 to be arranged in a concentrated manner, making the shape of the burner 100 more concise. Of course, the extension direction of the transfer chamber 127 can also be different from that of the first chamber 125 and the second chamber 126, while still achieving gas supply to the outer ring flame port 111b.

[0070] In some embodiments, please continue to combine Figure 4 The transfer chamber 127 has a second nozzle 150 on its side wall facing the connected second mixing chamber 128b. The second nozzle 150 is an ejector nozzle, and its outlet diameter is smaller than the inlet diameter so that the gas is accelerated out, ejecting natural air and supplying it to the outer ring flame hole 111b.

[0071] Please continue to combine Figure 4 The transfer chamber 127 and the second mixing chamber 128b are arranged at intervals. The output end of the second nozzle 150 faces the air inlet 1281 of the second mixing chamber 128b. The high-speed gas jet ejected by the second nozzle 150 guides the natural air located at the air inlet 1281 into the second mixing chamber 128b, mixes it, and then sends it to the outer ring flame hole 111b.

[0072] In a specific arrangement, the second nozzle 150 can be coaxially arranged with the air inlet 1281 of the second mixing chamber 128b, allowing the second nozzle 150 to extract natural air from its surroundings. The large extraction volume increases the amount of natural air extracted. Alternatively, the second nozzle 150 can be coaxial with the air inlet 1281 of the second mixing chamber 128b, still achieving the extraction of natural air. In one embodiment, the output end of the second nozzle 150 can be at least partially located outside the air inlet 1281 of the second mixing chamber 128b, further increasing the amount of natural air extracted. In other embodiments, the output end of the second nozzle 150 can also be located inside the air inlet 1281 of the second mixing chamber 128b, still allowing for the extraction of natural air.

[0073] In some embodiments, please continue to combine Figure 4 The diameter of the air inlet 1281 of the second mixing chamber 128b decreases sequentially along the medium flow direction, forming a trumpet-shaped air inlet 1281 to improve the entrainment effect of natural air. In other embodiments, the diameter of the air inlet 1281 of the second mixing chamber 128b remains unchanged along the medium flow direction, which can also achieve the entrainment of natural air.

[0074] Like the first mixing chamber 128a, the second mixing chamber 128b can be a channel-shaped chamber. The first mixing chamber 128a and the second mixing chamber 128b can be arranged side by side, occupying less space and having a more compact structure. Of course, the second mixing chamber 128b can also be set as a large-bellied chamber like the first mixing chamber 128a, which can also achieve the mixing of fuel gas and induced draft air.

[0075] The air in the second mixing chamber 128b is natural air with a small air volume, while the air in the first mixing chamber 128a is induced air with a large air volume. The aperture of the second mixing chamber 128b is smaller than that of the first mixing chamber 128a, so it can match the air volume of each chamber and ensure the required air volume for the mixture.

[0076] The first ejector channel 124a and the second ejector channel 124b can be arranged opposite each other, with their gas inlets 1241 facing opposite directions, facilitating the arrangement of gas flow channels and ensuring they do not interfere with each other. Alternatively, the first ejector channel 124a and the second ejector channel 124b can be arranged close together, with their gas inlets 1241 facing the same direction, still allowing for gas supply to both the inner ring burner hole 111a and the outer ring burner hole 111b. Valves can be installed on each of the first ejector channel 124a and the second ejector channel 124b to control the opening or closing of their respective ejector channels, thus enabling gas flow or shut-off.

[0077] Please see Figure 1 , Figure 8 as well as Figure 9 The base 120 includes a first support 121 and a second support 122. The first support 121 is provided with a first ejector channel 124a, a second ejector channel 124b, a first cavity 125, and a second cavity 126. A first nozzle 140 and a second nozzle 150 are both mounted on the first support 121, and the output ends of both the first nozzle 140 and the second nozzle 150 extend out of the first support 121. The second support 122 is provided with a first mixing chamber 128a and a second mixing chamber 128b. The base 120 is designed as a split structure, which facilitates the installation and fixation of the first nozzle 140 and the second nozzle 150, and realizes the setting of two gas-air ejector channels.

[0078] In some embodiments, the second support 122 is provided with a lower inner ring groove 1221 and a lower outer ring groove 1222. The lower inner ring groove 1221 communicates with the first mixing chamber 128a, and the lower outer ring groove 1222 communicates with the second mixing chamber 128b. The burner cap 110 is provided with an upper inner ring groove 113 and an upper outer ring groove 114. The burner cap 110 is connected to the second support 122. The lower inner ring groove 1221 and the upper inner ring groove 113 together form an inner ring cavity 101 that communicates with the inner ring flame hole 111a. The lower outer ring groove 1222 and the upper outer ring groove 114 together form an outer ring cavity 102 that communicates with the outer ring flame hole 111b. The arrangement of the inner ring cavity 101 and the outer ring cavity 102 enables the distribution of the mixed gas to multiple flame holes 111, increases the flame area, and improves the heating efficiency of multiple cookware.

[0079] The above description is based on the example of the inner ring flame hole 111a, the first mixing chamber 128a and the induced draft chamber 123 being connected in sequence. In other embodiments, when the outer ring flame hole 111b, the second mixing chamber 128b and the induced draft chamber 123 are connected in sequence, the above content is still applicable and only needs to be adjusted accordingly, which will not be repeated here.

[0080] Taking the sequential connection of the inner ring flame hole 111a, the first mixing chamber 128a, and the induced draft chamber 123 as an example, the working process of the burner 100 provided in this application is as follows:

[0081] Fire conditions: Please refer to Figure 11 as well as Figure 12 The first ejector channel 124a opens, and the gas flow within it flows through the second chamber 126 and is then ejected at high speed through the first nozzle 140. The air supplied by the induced draft fan flows through the first chamber 125 and is discharged through the connecting hole 1261. The air discharged through the connecting hole 1261 is ejected by the high-speed gas ejected by the first nozzle 140, and the two mix in the first mixing chamber 128a, entering the inner annular chamber 101 and being discharged for combustion through the inner annular flame hole 111a. At the same time, the gas in the second ejector channel 124b flows through the transfer chamber 127 and is ejected at high speed through the second nozzle 150. The natural air around the output end of the second nozzle 150 is ejected by the high-speed gas, and the two mix in the second mixing chamber 128b, entering the outer annular chamber 102 and being discharged for combustion through the outer annular flame hole 111b.

[0082] Small fire operation condition: Please refer to Figure 12 The induced draft fan continues to operate at the set power. The first ejector channel 124a is closed. The air supplied by the induced draft fan flows through the first chamber 125 and is discharged into the first mixing chamber 128a through the connecting hole 1261, and then discharged through the inner ring chamber 101 and the inner ring flame hole 111a. The gas in the second ejector channel 124b flows through the transfer chamber 127 and is ejected at high speed through the second nozzle 150. The natural air around the output end of the second nozzle 150 is ejected by the high-speed gas, and the two mix in the second mixing chamber 128b, entering the outer ring chamber 102 and being discharged for combustion through the outer ring flame hole 111b. The air discharged from the inner ring flame hole 111a can also supplement the combustion of the gas in the outer ring flame hole 111b, improving combustion efficiency.

[0083] The burner 100 provided in this application supplies a mixture of gas and air to the inner ring flame port 111a and the outer ring flame port 111b through two channels. One channel uses induced draft air provided by an induced draft fan as the combustion-supporting gas, and the other channel uses induced natural air as the combustion-supporting gas. In the process of adjusting the flame of the burner 100, it is only necessary to control the opening and closing of the gas in each channel to achieve flame adjustment. There is no need to adjust the air volume of the induced draft fan. It always operates at the set power. Therefore, the control logic is simple, the practicality is strong, and the product is stable and reliable.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0085] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0086] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A burner, characterized in that, include: The flame cap has two flame holes spaced apart along its radial direction. The base is provided with an ejector channel, a gas mixing chamber and an air duct. The ejector channel, the gas mixing chamber and the flame hole correspond one-to-one. The corresponding ejector channel, gas mixing chamber and flame hole are connected in sequence. The air duct is connected to one of the gas mixing chambers. An air-expelling component is connected to the air-expelling cavity.

2. The burner according to claim 1, characterized in that, The two flame holes are respectively configured as an inner ring flame hole and an outer ring flame hole, and the inner ring flame hole is connected to the mixing chamber and the induced draft chamber through a mixing chamber.

3. The burner according to claim 1, characterized in that, The two flame holes are respectively configured as an inner ring flame hole and an outer ring flame hole, and the outer ring flame hole is connected to the mixing chamber and the induced draft chamber through a mixing chamber.

4. The burner according to claim 2 or 3, characterized in that, At least a portion of the outlet end of the inner ring fire hole is disposed above the outlet end of the outer ring fire hole.

5. The burner according to claim 4, characterized in that, The flame cap is also provided with a flame outlet groove, and the outer ring flame hole is connected to the bottom of the flame outlet groove.

6. The burner according to any one of claims 1-3 and 5, characterized in that, The base is provided with a first cavity and a second cavity. The air duct, the first cavity and the corresponding gas mixing cavity are connected. The ejection channel, the second cavity and the corresponding gas mixing cavity are connected.

7. The burner according to claim 6, characterized in that, The second cavity has a first nozzle disposed on the side wall facing the connected mixing chamber.

8. The burner according to claim 6, characterized in that, The air intake chamber is arranged opposite to the ejection channel that connects to the first chamber.

9. The burner according to any one of claims 1-3, 5, and 7-8, characterized in that, The base is provided with a transfer cavity, which is connected to the corresponding ejection channel and the gas mixing chamber.

10. The burner according to claim 9, characterized in that, A second nozzle is provided on the side wall of the transfer chamber facing the connected mixing chamber.

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