A gas stove

Abstract

This invention relates to the field of kitchen appliance technology, and more particularly to a gas stove, comprising a panel and a burner mounted on the panel. The burner includes a burner head, a flame distributor, an outer burner cap, an inner burner cap, an energy-concentrating plate, and a fan coil unit. The flame distributor is mounted on the burner head, and the outer and inner burner caps are mounted on the flame distributor. The energy-concentrating plate surrounds the outer burner cap and has a cavity inside. The fan coil unit is located below the panel and connected to a blower. The energy-concentrating plate has several first air inlets on the bottom wall and several first air outlets on the side walls along its circumference. The first air outlets face the outer burner cap. Both the first air inlets and the first air outlets communicate with the cavity. The fan coil unit has several second air outlets along its circumference. Air flowing out of the second air outlets surrounds the burner head. The fan coil unit is configured to sequentially deliver the air blown in by the blower through the second air outlets and the first air inlets to the cavity, and then blow it towards the outer burner cap through the first air outlets. This application can solve the problem of insufficient utilization of thermal energy in existing gas stoves.

Description

Technical Field

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

[0002] Gas stoves typically inject gas from a gas nozzle into an injector tube at a certain flow rate. As the gas enters the injector tube, it draws in primary air due to its own flow inertia. The gas and primary air are premixed in the injector tube, and then enter the burner to be fully mixed and burned to form a flame. During the combustion process, the flame interacts with the secondary air around it.

[0003] In related technologies, secondary air supply mainly relies on natural negative pressure injection. This method suffers from unstable secondary air introduction. Insufficient secondary air input leads to incomplete combustion of the gas, resulting in excessive flue gas emissions and inefficient heat utilization. Furthermore, during operation, some of the heat generated by combustion in existing gas stoves is transferred to the burner head and energy-concentrating plate, preventing this heat from being used for cooking and further hindering efficient heat utilization. Additionally, components such as electrical controls, glass panels, and knobs are located around the burner head, and these components are susceptible to damage and failure due to high temperatures. Summary of the Invention

[0004] This application provides a gas stove to solve the problem that the heat energy of existing gas stoves is not fully utilized.

[0005] This application provides a gas stove, including a panel and a burner mounted on the panel.

[0006] The burner includes a burner head, a flame distributor, an outer flame cap, an inner flame cap, a concentrating plate, and a fan coil unit. The flame distributor is mounted on the burner head. The outer flame cap and the inner flame cap are mounted on the flame distributor, with the outer flame cap covering the inner flame cap. The concentrating plate surrounds the outer flame cap and has an internal chamber. The fan coil unit is located below the control panel and is connected to a blower.

[0007] The energy-concentrating plate is provided with several first air inlets on the bottom wall and several first air outlets on the side wall along the circumference. The first air outlets are arranged facing the outer flame cover. Both the first air inlets and the first air outlets are connected to the chamber. The fan plate is provided with several second air outlets along the circumference. The air flowing out through the second air outlets surrounds the outside of the furnace head. The fan plate is configured to transport the air blown in by the blower to the chamber in sequence through the second air outlets and the first air inlets, and blow it towards the outer flame cover through the first air outlets.

[0008] Compared to existing technologies, this application utilizes a blower to supplement and reinforce secondary air, enabling a stable output of secondary air and thus ensuring more complete combustion of the gas. Furthermore, the secondary air flow path is: second air outlet, first air inlet, chamber, and first air outlet. As it flows out through the second air outlet, it absorbs heat from the burner itself, then enters the energy-concentrating plate chamber, further absorbing heat from within the chamber, before exiting through the first air outlet as a supplement to the secondary air supply. This effectively recovers and utilizes the heat from the burner and energy-concentrating plate chamber, which would otherwise be unusable, thereby achieving full utilization of the gas stove's thermal energy.

[0009] In addition, the fan coil unit of this application embodiment is provided with several second air outlets along the circumference. The air flowing out through the second air outlets surrounds the burner head, forming an air curtain to wrap around the burner head, thereby preventing the heat of the burner head itself from being transferred outward, protecting the electrical control components, panels, knobs and other components around the burner head, and reducing the temperature rise and damage to these components due to high temperature.

[0010] In some embodiments, the energy-concentrating disk is provided with a partition located in the cavity and separating the first air inlet and the first air outlet. A tortuous flow path is formed between the partition and the inner wall of the cavity, and the air entering through the first air inlet flows along the flow path to the first air outlet.

[0011] Therefore, by creating a secondary airflow path within the chamber through the partition, the circulation time of the secondary air within the chamber is extended, thereby enhancing the absorption of heat by the secondary air within the chamber, increasing the intensity of heat recovery from the energy-concentrating plate, and improving the utilization rate of thermal energy.

[0012] In some embodiments, the chamber includes an inner annular wall and an outer annular wall disposed opposite to each other, the inner annular wall being located inside the outer annular wall;

[0013] The partition is provided with at least two partitions, which are arranged longitudinally at intervals. One of the two adjacent partitions extends from the inner ring wall to the outer ring wall and is spaced apart from the outer ring wall, while the other extends from the outer ring wall to the inner ring wall and is spaced apart from the inner ring wall.

[0014] Therefore, by setting at least two baffles, the flow path formed in the chamber is longer, which further improves the heat recovery intensity in the energy-concentrating plate.

[0015] In some embodiments, the projections of the first air inlet and the first air outlet on the horizontal plane are staggered.

[0016] Therefore, the staggered arrangement of the first air inlet and the first air outlet allows the secondary air circulation path to be further extended, thereby improving the heat recovery intensity.

[0017] In some embodiments, the first air outlet is located at the upper end of the side wall of the energy-concentrating disk, and the air flowing out of the first air outlet flows around the outer flame cover.

[0018] Alternatively, the first air outlet is located at the lower end of the side wall of the energy-concentrating disk, and the air flowing out of the first air outlet flows to the outside of the outer flame cover and the area between the outer flame cover and the inner flame cover.

[0019] Therefore, by setting the first air outlet at the lower end of the side wall, secondary air can be supplied to both the outer and inner burner caps simultaneously, further improving combustion thermal efficiency.

[0020] In some embodiments, the energy-concentrating disk extends downward to form a guide column, the guide column having a guide channel communicating with the chamber, and one end of the guide channel forming the first air inlet.

[0021] This allows the secondary air entering through the first air inlet to be guided into the cavity of the energy-concentrating disk through the guide channel, and the guide column can also be used as a support for the energy-concentrating disk to improve the support stability of the energy-concentrating disk.

[0022] In some embodiments, the burner further includes a liquid receiving tray, which is mounted on the panel and has an air inlet channel with one end facing the second air outlet. The other end of the air inlet channel is connected to the first air inlet, and the air flowing out of the second air outlet enters the chamber sequentially through the air inlet channel and the first air inlet.

[0023] Therefore, by using the air intake channel of the liquid receiving tray as a flow bridge between the first air inlet and the second air outlet, on the one hand, there is no need to open holes in the panel to avoid leakage problems, and on the other hand, the liquid receiving tray is closer to the fan plate, and its air intake channel is closer to the second air outlet, so the air flowing out of the second air outlet can enter the air intake channel more accurately and quickly.

[0024] In some embodiments, the liquid receiving tray has a plurality of connecting holes located at the bottom of the flame distributor, the connecting holes having flanges extending upward in the circumferential direction, the flame distributor having an annular channel located between the outer flame cap and the inner flame cap, and the plurality of connecting holes being provided corresponding to the annular channel.

[0025] Therefore, by connecting the hole to the annular channel, secondary air can be supplied from the connecting hole to the annular channel to achieve complete combustion.

[0026] In addition, by setting up a flange, it is possible to prevent liquid from leaking into the burner and other structures through the connecting holes during the cooking process.

[0027] In some embodiments, the fan disc has an upwardly protruding annular chamber, the upper end of which is connected to the air inlet channel and the lower end of which is connected to the second air outlet.

[0028] Therefore, the use of a solid annular chamber connecting the second air outlet and the air inlet channel of the liquid receiving plate provides a better wrapping effect on the burner head, thereby effectively absorbing the heat of the burner head itself.

[0029] In some embodiments, the outer flame cap includes an outer surface, the outer surface including an inner annular surface extending downwardly from the apex of the outer surface, the inner annular surface facing the inner flame cap, and the bottom of the inner annular surface being closer to the central axis of the outer flame cap than the top.

[0030] Therefore, by setting a downward-sloping inner annular surface on the outer surface of the outer flame cap facing the inner flame cap, and by having the flame holes vertically penetrate the inner annular surface, the flame generated by the outer flame cap is in a cohesive state and will not drift outward. The heat is concentrated in the space enclosed by the inner annular surface, thus improving energy efficiency. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the gas stove described in the embodiment of this application;

[0034] Figure 2 This is a schematic diagram of the burner structure of the gas stove described in the embodiments of this application;

[0035] Figure 3 This is a schematic diagram of the exploded structure of the burner of the gas stove described in the embodiments of this application;

[0036] Figure 4 This is a top view of the burner of the gas stove described in the embodiment of this application;

[0037] Figure 5 Examples of this application Figure 4 AA section view in the middle;

[0038] Figure 6 Examples of this application Figure 5 Enlarged view of point B;

[0039] Figure 7 This is a schematic diagram of the structure of the energy-concentrating disk with two partitions as described in the embodiment of this application;

[0040] Figure 8 This is a schematic diagram showing the structure of the energy-concentrating disk with a first air inlet and a first air outlet as described in the embodiments of this application;

[0041] Figure 9 This is a schematic diagram of the structure of the first air outlet of the energy-concentrating disk described in the embodiment of this application;

[0042] Figure 10 This is a schematic diagram of the structure of the energy-concentrating disk described in this application embodiment, where the first air outlet is located at the lower end of the side wall;

[0043] Figure 11 This is a schematic diagram of the liquid receiving tray described in an embodiment of this application;

[0044] Figure 12 Examples of this application Figure 11 Enlarged view of point C;

[0045] Figure 13 This is a schematic diagram of the structure of the outer flame cap as described in an embodiment of this application;

[0046] Figure 14 This is a schematic diagram of the connection structure between the flame distributor and the outer flame cap as described in an embodiment of this application.

[0047] in:

[0048] 1. Panel;

[0049] 2. Burner; 21. Burner head; 22. Flame distributor; 23. Outer flame cover; 231. Inner annular surface; 232. Flame hole; 24. Concentrating plate; 241. Chamber; 242. First air inlet; 243. First air outlet; 244. Baffle; 245. Inner annular wall; 246. Outer annular wall; 247. Guide column; 248. Guide edge; 25. Fan plate; 251. Second air outlet; 26. Blower; 27. Liquid receiving plate; 271. Air inlet channel; 272. Annular snap-fit ​​part; 273. Connecting hole; 2731. Flanged edge; 28. Inner flame cover. Detailed Implementation

[0050] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0052] Considering that the secondary air in the gas stoves of the related technology is introduced by natural negative pressure injection, which has the problem of unstable introduction leading to incomplete combustion, and that the heat in the existing burner and energy-concentrating plate cannot be utilized, resulting in the gas stove's heat energy not being fully utilized, this application provides a gas stove to solve the above problems.

[0053] For example, such as Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of the gas stove described in the embodiment of this application. The gas stove includes a panel 1, a burner 2, and a base (not shown in the figure). The panel 1 can be understood as the cooktop of the gas stove, which can be made of glass or metal. Functional components, such as knobs or touch screens, can be installed on the panel 1.

[0054] The base has an internal cavity that can accommodate components such as gas valves and gas pipes, as well as part of the structure of the burner 2. The panel 1 is placed on top of the base so that the panel 1 and the base form an integral shell structure.

[0055] The burner 2 can be embedded in the panel 1. For example, the panel 1 can have a clearance opening, through which the burner 2 is placed.

[0056] like Figures 2-5 As shown, where Figure 2 This is a schematic diagram of the burner 2 of the gas stove described in this application embodiment. Figure 3 This is a schematic diagram of the exploded structure of the burner 2 of the gas stove described in this application embodiment. Figure 4 This is a top view of the burner 2 of the gas stove described in the embodiment of this application. Figure 5 Examples of this application Figure 4 The image shows a cross-sectional view (AA) of the burner. The burner 2 includes a burner head 21, a flame distributor 22, an outer flame cap 23, a concentrating plate 24, and a fan coil unit 25. The burner head 21 is installed within the housing formed by the panel 1 and the base, with a portion of the burner head 21 located above the panel 1. An electrical control unit located within the base can also be installed on one side of the burner head 21. The flame distributor 22 is installed on the burner head 21, and an outer flame cap 23 and an inner flame cap 28 are installed on the flame distributor 22. The outer flame cap 23 is fitted over the inner flame cap 28. The concentrating plate 24 surrounds the outer flame cap 23. The fan coil unit 25 is located below the panel 1 and is connected to a blower 26, which supplies air into the fan coil unit 25.

[0057] like Figure 4 As shown in this embodiment, the energy-concentrating disk 24 has a chamber 241 inside, and the energy-concentrating disk 24 has several first air inlets 242 located on the bottom wall and several first air outlets 243 located on the side wall along the circumference. The first air inlets 242 and the first air outlets 243 are all connected to the chamber 241, and the first air outlets 243 are arranged facing the outer burner cover 23. The fan disk 25 has several second air outlets 251 along the circumference. The air output by the blower 26 enters the fan disk 25 and flows out through the second air outlets 251. The air flowing out through the second air outlets 251 surrounds the burner head 21, which can form an air curtain around the burner head 21. This can block the heat of the burner head 21 from being transferred to nearby electrical control components, panel 1, knobs and other components, reduce the temperature rise of electrical control components, panel 1, knobs and other components, and protect electrical control components, panel 1, knobs and other components from heat damage.

[0058] In this embodiment of the application, the second air outlet 251 is provided corresponding to the first air inlet 242. That is to say, the air flowing out through the second air outlet 251 can enter the first air inlet 242, then enter the chamber 241 of the energy-concentrating disk 24 through the first air inlet 242, and be blown towards the outer flame cover 23 through the first air outlet 243.

[0059] This embodiment of the application uses a blower 26 to supplement and reinforce secondary air, which can stably output secondary air, thereby making the combustion of the gas more complete. Furthermore, the flow path of the secondary air is: second air outlet 251, first air inlet 242, chamber 241, first air outlet 243 (…). Figure 5 As indicated by the arrows on the left and right sides (in the image), during the process of flowing out of the second air outlet 251, it can absorb the heat of the burner 21 itself, and then enter the chamber 241 of the energy-concentrating plate 24, where it convects and exchanges heat with the inner surface of the chamber 241, further absorbing the heat conducted to the chamber 241 of the energy-concentrating plate 24 to increase the temperature of the secondary air. Afterwards, the secondary air flows out through the first air outlet 243 and replenishes the outer burner cap 23 with secondary air to improve the combustion efficiency at the outer burner cap 23. On the one hand, by improving the combustion thermal efficiency at the outer burner cap 23, the heat energy of the gas stove is fully utilized. On the other hand, the heat that would otherwise be unusable in the burner 21 and the chamber 241 of the energy-concentrating plate 24 is fully recovered and utilized to achieve full utilization of heat energy.

[0060] In some embodiments, optionally, heat recovery within the energy-concentrating disk 24 can be better achieved by extending the flow path of secondary air within the chamber 241 of the energy-concentrating disk 24. For example, it can be as follows: Figure 6 As shown, Figure 6 Examples of this application Figure 5The enlarged schematic diagram at point B shows that a partition 244 is provided in the chamber 241 of the energy-concentrating disk 24 to isolate the first air inlet 242 and the first air outlet 243. For example, the chamber 241 of the energy-concentrating disk 24 may include an inner ring wall 245 and an outer ring wall 246 arranged opposite to each other. The inner ring wall 245 is located near the outer flame cap 23, and the outer ring wall 246 is located outside the inner ring wall 245. One end of the partition 244 can be installed on one of the inner ring wall 245 and the outer ring wall 246, and the other end forms a gap with the wall of the other, so that a flow path is formed between the partition 244 and the inner wall of the chamber 241. The air entering through the first air inlet 242 flows along the flow path to the first air outlet 243. Figure 6 (As shown by the middle arrow). The baffle 244 forms a bent flow path, which prolongs the flow time of secondary air in the chamber 241, thereby enhancing the absorption of heat in the chamber 241 by the secondary air, improving the heat recovery intensity in the energy-concentrating disk 24, and improving the utilization rate of thermal energy.

[0061] It is understandable that the number of the aforementioned partitions 244 can be one or at least two. When there are at least two, such as... Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of the energy-concentrating disk 24 with two partitions 244 as described in this embodiment. At least two partitions 244 are arranged longitudinally at intervals, with one of two adjacent partitions extending from the inner ring wall 245 to the outer ring wall 246 and spaced apart from the outer ring wall 246, and the other extending from the outer ring wall 246 to the inner ring wall 245 and spaced apart from the inner ring wall 245. Thus, by providing multiple partitions 244, a flow path with multiple bends can be formed, making the flow path longer. This results in a longer flow time for secondary air within the chamber 241 of the energy-concentrating disk 24, increasing the time for the secondary air to absorb heat, resulting in more heat absorbed, and further improving the heat recovery intensity within the energy-concentrating disk 24.

[0062] In addition, such as Figure 8 As shown, Figure 8 This is a schematic diagram showing the structure of the energy-concentrating disk 24 described in this embodiment, which includes a first air inlet 242 and a first air outlet 243. In this embodiment, the projections of the first air inlet 242 and the first air outlet 243 of the energy-concentrating disk 24 on the horizontal plane can also be staggered. This structural arrangement further extends the flow path of the secondary air, thereby improving the heat recovery intensity.

[0063] In the embodiments of this application, please refer to Figure 8The energy-concentrating disk 24 extends downward to form a guide column 247, which can be used as a support for the energy-concentrating disk 24 to improve its support stability. In addition, the guide column 247 has a guide channel that connects to the chamber 241. One end of the guide channel forms a first air inlet 242, and the secondary air entering through the first air inlet 242 can be guided into the chamber 241 of the energy-concentrating disk 24 through the guide channel.

[0064] In this embodiment of the application, the above-mentioned guide column 247 can be installed through the panel 1. At this time, one end of the guide channel forming the first air inlet 242 is positioned directly opposite the second air outlet 251 of the above-mentioned fan plate 25, so that the secondary air flowing out of the second air outlet 251 can smoothly enter the guide channel of the guide column 247.

[0065] In some embodiments, such as Figure 9 As shown, Figure 9 This is a schematic diagram of the structure of the first air outlet 243 of the energy-concentrating plate 24 according to an embodiment of this application. The first air outlet 243 can be an elongated through hole opened on the side wall of the energy-concentrating plate 24, and the side wall of the energy-concentrating plate 24 extends outward from the elongated through hole to form a guide edge 248. The guide edge 248 is formed by extending outward from the edge of the elongated through hole, and the guide edge 248 extends in a horizontal or nearly horizontal direction, so that the secondary air in the energy-concentrating plate 24 can be discharged in parallel and blown towards the periphery of the outer flame cap 23.

[0066] In the embodiments of this application, such as Figure 8 As shown, the first air outlet 243 is located at the upper end of the side wall of the energy-concentrating plate 24. The secondary air flowing from the first air outlet 243 will then flow towards the periphery of the outer burner cap 23 to improve the combustion thermal efficiency at the outer burner cap 23. It is understandable that in another technical solution, such as... Figure 10 As shown, Figure 10 This is a schematic diagram of the structure of the first air outlet 243 of the energy-concentrating disk 24 described in this application embodiment, located at the lower end of the side wall. The first air outlet 243 can also be located at the lower end of the side wall of the energy-concentrating disk 24. In this case, since there is airflow space at the bottom of the burner 22, the secondary air flowing out through the first air outlet 243 can flow through the space at the bottom of the burner 22 to the outer side of the outer burner cap 23 and the area between the outer burner cap 23 and the inner burner cap 28, respectively. This allows for the replenishment of secondary air to both the outer burner cap 23 and the inner burner cap 28, further improving combustion thermal efficiency.

[0067] In some embodiments of this application, the burner 2 further includes a liquid receiving tray 27, which can be referred to as... Figure 5 and Figure 11 ,in Figure 11This is a schematic diagram of the liquid collection tray 27 described in an embodiment of this application. The liquid collection tray 27 is located above the panel 1 and covers the clearance opening on the panel 1 to achieve liquid collection and prevent leakage. The liquid collection tray 27 is provided with an air inlet channel 271 with one end facing the second air outlet 251, and the other end of the air inlet channel 271 is connected to the first air inlet 242. The air flowing out of the second air outlet 251 enters the chamber 241 in sequence through the air inlet channel 271 and the first air inlet 242. By using the air inlet channel 271 of the liquid receiving tray 27 as a flow bridge between the first air inlet 242 and the second air outlet 251, on the one hand, there is no need to open holes in the panel 1 to avoid leakage problems, and there is no need to set up a separate structure to connect the first air inlet 242 and the second air outlet 251; on the other hand, the liquid receiving tray 27 is closer to the fan plate 25, and its air inlet channel 271 is closer to the second air outlet 251, so the air flowing out of the second air outlet 251 can enter the air inlet channel 271 more accurately and quickly.

[0068] It should be pointed out that, as Figure 11 As shown, the air inlet channel 271 of the aforementioned liquid receiving tray 27 can be a hole formed on the tray body of the liquid receiving tray 27, and a raised annular locking portion 272 can be formed extending upward around the periphery of the hole. The guide column 247 of the aforementioned energy concentrating tray 24 can be locked onto the annular locking portion 272. It can be understood that the cross-sectional shape of the aforementioned air inlet channel 271 and the cross-sectional shape of the guide channel of the guide column 247 can both be arc-shaped racetracks.

[0069] As an optional technical solution, in some embodiments, reference can be made to Figure 11 The liquid receiving tray 27 can have several connecting holes 273 located at the bottom of the flame distributor 22. The flame distributor 22 has an annular channel between the outer flame cap 23 and the inner flame cap 28, and the connecting holes 273 are arranged corresponding to the annular channel. Thus, secondary air can be supplied to the annular channel from the connecting holes 273 to achieve complete combustion. It should be noted that the secondary air at the connecting holes 273 can be secondary air introduced by natural negative pressure, or secondary air flowing out through the second air outlet 251 of the fan 25.

[0070] like Figure 12 As shown, Figure 12 Examples of this application Figure 11 Enlarged schematic diagram at point C. The aforementioned connecting hole 273 extends circumferentially upward with a flange 2731. By setting this flange 2731, liquid during the cooking process can be prevented from leaking into the burner head 21 and other structures through the connecting hole 273.

[0071] In some embodiments, to better seal the heat of the burner head 21, an upwardly protruding annular chamber can be provided on the fan plate 25. The upper end of the annular chamber is connected to the air inlet channel 271, and the lower end is connected to the second air outlet 251. Thus, by using a solid annular chamber to connect the second air outlet 251 and the air inlet channel 271 of the liquid receiving plate 27, the effect of enveloping the burner head 21 is better, thereby effectively absorbing the heat of the burner head 21 itself.

[0072] For reference Figure 13 , Figure 13 This is a schematic diagram of the structure of the outer flame cap 23 according to an embodiment of this application. The outer flame cap 23 may include an outer surface. An inner annular surface 231 may be provided on the side of the outer surface of the outer flame cap 23 near the inner flame cap 28. The inner annular surface 231 extends downward from the apex of the outer surface. The inner annular surface 231 faces the inner flame cap 28 of the burner 2, and the bottom of the inner annular surface 231 is closer to the central axis of the outer flame cap 23 than the top. That is, the distance between the inner annular surface 231 and the central axis of the outer flame cap 23 gradually decreases from top to bottom. The outer flame cap 23 is provided with a flame hole 232 that opens vertically and penetrates the inner annular surface 231.

[0073] Compared to existing technologies, this embodiment features a downwardly extending inner annular surface 231 on the outer surface of the outer flame cap 23 facing the outer surface of the inner flame cap 28, with the flame hole 232 penetrating vertically through the inner annular surface 231. This causes the flame at the outer flame cap 23 to be converging, preventing it from drifting outwards, and concentrating heat within the space enclosed by the inner annular surface 231, thus improving energy efficiency. Furthermore, the downwardly extending inner annular surface 231 in this embodiment allows more secondary air to flow upwards along the inner annular surface 231, effectively replenishing the secondary air required for combustion and improving combustion efficiency.

[0074] In some embodiments, such as Figure 13 As shown, the outer flame cover 23 is provided with multiple rings of flame holes 232, which are arranged from the inside to the outside along the radial direction of the inner annular surface 231, and each ring of flame holes 232 includes multiple flame holes 232 distributed circumferentially.

[0075] In the above embodiments, such as Figure 13 and Figure 14 As shown, Figure 14This is a schematic diagram of the connection structure between the flame distributor 22 and the outer flame cap 23 as described in this application embodiment. The inner annular surface 231 is provided with multiple rings of flame holes 232. Each ring of flame holes 232 can be composed of multiple evenly arranged flame holes 232. The axes of the multiple rings of flame holes 232 are all aligned with the axis of the inner flame cap 28. The multiple rings of flame holes 232 are distributed in a stepped manner from the bottom to the top of the inner annular surface 231, resulting in a flame distribution from low to high at the outer flame cap 23, thus making the flame more cohesive and improving thermal efficiency. It can be understood that the distance between two adjacent rings of flame holes 232 is equal, thereby making the flame on the outer flame cap 23 more uniform and heating the cookware more evenly.

[0076] In some embodiments, the diameter of the burner holes 232 located in the innermost and outermost rings is larger than the diameter of the burner holes 232 located between the innermost and outermost rings. Since the secondary air is relatively abundant at the burner holes 232 in the innermost and outermost rings, larger diameter burner holes 232 can be used to ensure complete combustion. Conversely, the secondary air is less at the burner holes 232 in the middle ring, so smaller burner holes 232 can be used to effectively prevent incomplete combustion. In the above embodiment, the diameters of the outermost and innermost rings of flame holes 232 can both be set to 2.2 mm, while the diameters of the three middle rings of flame holes 232 can be set to 2 mm. This allows the outermost and innermost rings of flame holes 232 to contact sufficient secondary air while supplying an air-fuel mixture through the larger diameter flame holes 232, ensuring complete combustion and higher combustion efficiency. Since there is less secondary air in the three middle rings of flame holes 232, the diameter of the three middle rings of flame holes 232 is reduced to ensure complete combustion even with less secondary air, avoiding incomplete combustion and improving combustion efficiency.

[0077] In some embodiments, the angle α between the inner annular surface 231 and the horizontal plane is 10°-15°.

[0078] In the above embodiments, such as Figure 13 and Figure 14 As shown, the inner annular surface 231 is set at an angle to the horizontal plane, which facilitates the flow of secondary air between the gap between the outer flame cap 23 and the inner flame cap 28 through the inner annular surface 231. This allows the secondary air to come into contact with the flame holes 232 on the inner annular surface 231, thereby maintaining the inward-inclined flame concentration effect and improving combustion efficiency. Preferably, the angle α between the inner annular surface 231 and the horizontal plane can be set to 10°, which can maintain the inward-inclined flame concentration effect and improve combustion efficiency while preserving the flat plate combustion effect of the flat plate burner 2.

[0079] The gas stove described in this embodiment of the application uses a blower 26 to forcibly replenish secondary air, which increases the degree of combustion at the outer burner cap 23 and the inner burner cap 28. Furthermore, in addition to meeting combustion requirements, the replenishment of secondary air allows for a reduction in the height of the energy-concentrating plate 24 (existing gas stoves require sufficient height between the energy-concentrating plate 24 and the panel 1 to ensure combustion efficiency and introduce negative pressure for secondary air), resulting in a flatter and thinner structure for the gas stove. Moreover, replenishing secondary air via the blower 26 eliminates the need to consider factors such as the mixing ratio with the gas, thus eliminating the need to adjust the blower 26's speed according to the size of the flame, making the control logic and structure for secondary air replenishment simpler.

[0080] 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.

[0081] 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.

[0082] 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 used 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.

[0083] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0084] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas stove, characterized in that, Includes a panel and a burner mounted on the panel. The burner includes a burner head, a flame distributor, an outer flame cap, an inner flame cap, a concentrating plate, and a fan coil unit. The flame distributor is mounted on the burner head. The outer flame cap and the inner flame cap are mounted on the flame distributor, with the outer flame cap covering the inner flame cap. The concentrating plate surrounds the outer flame cap and has an internal chamber. The fan coil unit is located below the control panel and is connected to a blower. The energy-concentrating plate is provided with several first air inlets on the bottom wall and several first air outlets on the side wall along the circumferential direction. The first air outlets are arranged facing the outer flame cover. Both the first air inlets and the first air outlets are connected to the chamber. The fan plate is provided with several second air outlets along the circumferential direction. The air flowing out through the second air outlets surrounds the outside of the furnace head. The fan plate is configured to deliver the air blown in by the blower to the chamber in sequence through the second air outlets and the first air inlets, and blow it towards the outer flame cover through the first air outlets. The energy-concentrating plate is provided with a partition located in the cavity and separating the first air inlet and the first air outlet. A tortuous flow path is formed between the partition and the inner wall of the cavity, and the air entering through the first air inlet flows to the first air outlet along the flow path.

2. The gas stove according to claim 1, characterized in that, The chamber includes an inner ring wall and an outer ring wall disposed opposite to each other, with the inner ring wall located inside the outer ring wall; The partition is provided with at least two partitions, which are arranged longitudinally at intervals. One of the two adjacent partitions extends from the inner ring wall to the outer ring wall and is spaced apart from the outer ring wall, while the other extends from the outer ring wall to the inner ring wall and is spaced apart from the inner ring wall.

3. The gas stove according to claim 1, characterized in that, The projections of the first air inlet and the first air outlet on the horizontal plane are staggered.

4. The gas stove according to claim 1, characterized in that, The first air outlet is located at the upper end of the side wall of the energy-concentrating plate, and the air flowing out of the first air outlet flows around the outer flame cover; Alternatively, the first air outlet is located at the lower end of the side wall of the energy-concentrating disk, and the air flowing out of the first air outlet flows to the outside of the outer flame cover and the area between the outer flame cover and the inner flame cover.

5. The gas stove according to claim 1, characterized in that, The energy-concentrating disk extends downward to form a flow guide column, and the flow guide column has a flow guide channel that connects to the chamber. One end of the flow guide channel forms the first air inlet.

6. The gas stove according to claim 1, characterized in that, The burner also includes a liquid receiving tray, which is installed on the panel and has an air inlet channel with one end facing the second air outlet. The other end of the air inlet channel is connected to the first air inlet. The air flowing out of the second air outlet enters the chamber sequentially through the air inlet channel and the first air inlet.

7. The gas stove according to claim 6, characterized in that, The liquid receiving tray has several connecting holes located at the bottom of the flame distributor. The connecting holes extend upward in the circumferential direction and have flanges. The flame distributor has an annular channel located between the outer flame cap and the inner flame cap. The several connecting holes are arranged corresponding to the annular channel.

8. The gas stove according to claim 6, characterized in that, The fan disc has an upwardly protruding annular chamber, the upper end of which is connected to the air inlet channel and the lower end of which is connected to the second air outlet.

9. The gas stove according to claim 1, characterized in that, The outer flame cap includes an outer surface, the outer surface including an inner annular surface extending downward from the apex of the outer surface, the inner annular surface facing the inner flame cap, and the bottom of the inner annular surface being closer to the central axis of the outer flame cap than the top.

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