A gas stove

Abstract

The application relates to the technical field of kitchen appliances, in particular to a gas stove which comprises a panel and a burner installed on the panel, the burner comprises a burner head, a distributor, an outer fire cover, an inner fire cover, an energy-gathering disc and a liquid receiving disc, the burner head is provided with an injection pipe which is communicated with the distributor, the distributor is installed on the burner head, the outer fire cover and the inner fire cover are both installed on the distributor, the energy-gathering disc is arranged outside the outer fire cover and internally provided with an energy-gathering cavity, the liquid receiving disc is located below the energy-gathering disc, the energy-gathering disc is provided with a first air inlet and a first air outlet which are both communicated with the energy-gathering cavity, the liquid receiving disc is provided with an air cavity, a second air inlet and a second air outlet, the second air inlet and the second air outlet are both communicated with the air cavity, and the second air inlet is communicated with the first air outlet; external air is blown to the burner head through the first air inlet, the energy-gathering cavity, the first air outlet, the second air inlet, the air cavity and the second air outlet in sequence, and is sucked into the injection pipe under negative pressure after absorbing the heat of the burner head. The application can solve the problem that the heat energy of the existing gas stove is not fully utilized.

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 existing gas stoves, during use, some of the heat generated by combustion is transferred to the burner head and energy-concentrating plate, preventing this heat from being used for cooking and thus affecting the full utilization of heat energy. Furthermore, 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. The burner includes a burner head, a flame distributor, an outer flame cap, an inner flame cap, a concentrating plate, and a liquid receiving plate. The burner head is equipped with an injector tube communicating with the flame distributor. The flame distributor is mounted on the burner head. The outer flame cap and the inner flame cap are both mounted on the flame distributor, with the outer flame cap surrounding the inner flame cap. The concentrating plate surrounds the outer flame cap and has a concentrating cavity inside. The liquid receiving plate is located below the concentrating plate. The energy-concentrating plate is provided with a first air inlet located on the outer side wall and a first air outlet located on the bottom wall. The first air inlet and the first air outlet are both connected to the energy-concentrating cavity. The liquid receiving plate is provided with an air cavity, a second air inlet and a second air outlet. The second air inlet and the second air outlet are both connected to the air cavity. The second air inlet is connected to the first air outlet. Outside air is sequentially blown toward the furnace head through the first air inlet, the energy-concentrating cavity, the first air outlet, the second air inlet, the air cavity, and the second air outlet. After absorbing the heat from the furnace head, it is drawn into the ejector tube by negative pressure.

[0006] Compared to existing technologies, the embodiments of this application, through the aforementioned structural arrangement, allow outside air to enter the energy-concentrating chamber through the first air inlet, first absorbing the heat accumulated in the energy-concentrating plate, then being guided into the air cavity of the liquid-receiving plate through the first air outlet and the second air inlet, and finally flowing from the second air outlet to the burner head. After the airflow further absorbs the heat of the burner head itself, it is drawn into the injector tube under the negative pressure of the injector tube, serving as primary combustion air supply. This structure, on the one hand, continuously replenishes primary air, effectively improving the deficiency of insufficient primary air supply in traditional burners, and significantly improving the completeness of combustion; at the same time, it recovers the waste heat of the energy-concentrating plate and burner head in stages, achieving preheating of the outside air to increase the initial temperature of the combustion reaction, accelerate the flame propagation rate, further enhance the combustion conditions, and significantly improve the completeness of combustion and the overall thermal efficiency of the machine. On the other hand, the embodiments of this application efficiently recover and reuse the heat of the burner head and energy-concentrating plate that would otherwise be lost and wasted, realizing the resource utilization of waste heat, reducing ineffective heat loss, significantly improving the overall thermal energy utilization rate of the gas stove, and achieving better energy-saving effects.

[0007] Furthermore, in this embodiment, the first air inlet is located on the outer wall of the energy-concentrating plate, allowing outside air to flow from the outside inwards towards the injector tube, creating a counter-current flow. This ensures that all outside air enters from the top outside of the burner, solving the problem of insufficient primary air intake in traditional gas stoves that can only draw air from inside the cabinet. Moreover, this first air inlet design avoids affecting the burner's combustion performance, and its location also prevents food residue, food, and boiling water from affecting the first air inlet, ensuring smooth airflow.

[0008] In some embodiments, a baffle is provided upstream of the inlet end of the ejector tube along the ejection direction of the ejector tube. After absorbing the heat from the furnace head, the outside air is blown toward the baffle and is drawn into the ejector tube after being blocked by the baffle.

[0009] Therefore, the baffle can block, gather, and guide the outside air after it has absorbed heat, allowing it to concentrate and converge at the inlet area of ​​the ejector tube, thus steadily increasing the primary air intake and uniformity of the ejector tube. This further replenishes the primary air required for combustion, maintains the initial high temperature of the combustion reaction, steadily accelerates the flame propagation speed, and further improves combustion completeness and thermal efficiency.

[0010] In some embodiments, the burner further includes a fan configured to drive outside air from the second air outlet toward the burner head.

[0011] Therefore, by forcibly driving the flow of outside air through a fan, the efficiency of outside air delivery and the uniformity of air intake can be significantly improved. Furthermore, it allows outside air to continuously pass through the energy-concentrating plate and the burner, constantly absorbing heat from these components. In addition, the baffle's airflow guiding effect ensures that the outside air, having absorbed heat from the energy-concentrating plate and burner, is quickly drawn into the injector tube under negative pressure, continuously and stably replenishing the primary air required for combustion.

[0012] In some embodiments, the liquid receiving tray extends downward and has a protrusion, the interior of which forms part of the air cavity, and the sidewall of the protrusion is provided with a second air outlet, and the fan is placed inside the protrusion and located at the second air outlet.

[0013] Therefore, the protrusion extends downwards, which can make reasonable use of vertical space without increasing the lateral volume of the burner, and can also increase the volume of the air cavity. By installing the fan near the second air outlet, the airflow resistance and pressure loss along the way can be reduced, and the airflow output by the fan can be blown directionally and smoothly through the second air outlet to the furnace head area.

[0014] In addition, the protrusion, as the final convergence point of the air cavity, allows the outside air in the air cavity to converge at the protrusion. Combined with the forced air delivery of the fan and the airflow guidance of the baffle, the airflow direction and flow rate of the outside air are stabilized, ensuring that the outside air is stably and centrally delivered to the ejector tube.

[0015] 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.

[0016] Therefore, when the outside air flowing out of the second air outlet encounters the burner head, a portion of the outside air will rise due to the resistance of the burner head. At this time, through the connecting holes on the liquid receiving plate, this portion of outside air can be transported to the annular channel between the outer and inner burner caps, thus supplementing the secondary air and further improving the degree of combustion. That is, outside air simultaneously replenishes both primary and secondary air.

[0017] In some embodiments, the projections of the first air inlet and the first air outlet on the horizontal plane are staggered.

[0018] Therefore, the staggered arrangement of the first air inlet and the first air outlet can extend the flow path of outside air in the energy-concentrating cavity, allowing outside air to stay in the energy-concentrating cavity for a longer time, thereby improving the degree of heat energy recovery of the energy-concentrating plate.

[0019] In some embodiments, the energy-concentrating disk is provided with a partition located inside the energy-concentrating cavity, the partition dividing the energy-concentrating cavity into a convection cavity and a closed heat insulation cavity, and the first air inlet and the first air outlet are both connected to the convection cavity.

[0020] Therefore, the energy-concentrating chamber is divided into an independent convection chamber and an insulation chamber by a partition. The convection chamber is used to allow the circulation and heat exchange of outside air, while the insulation chamber is used to insulate the energy-concentrating plate and prevent accelerated heat loss at the burner cap. In addition, the combination of the convection chamber and the insulation chamber can also prevent excessive heat on the outer wall of the energy-concentrating plate, which could cause harm to the user.

[0021] In some embodiments, the energy-concentrating disk extends downward to form a guide column, the guide column having a guide channel communicating with the energy-concentrating cavity, and one end of the guide channel forming the first air outlet.

[0022] This allows outside air inside the energy-concentrating cavity to flow through the guide channel to the air cavity of the liquid receiving plate, and the guide column can also be used as a support for the energy-concentrating plate to improve the support stability of the energy-concentrating plate.

[0023] In some embodiments, the outer flame cap includes an outer surface located at the top, 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.

[0024] Therefore, the downward-sloping inner annular surface allows more secondary air to flow upward along the inner annular surface, effectively supplementing the secondary air required for combustion and improving combustion efficiency.

[0025] In some embodiments, the outer flame cover is provided with a flame hole that opens vertically and penetrates the inner annular surface.

[0026] Therefore, the vertically opened flame holes can effectively prevent interference between the flames of the outer and inner flame caps, thus avoiding affecting combustion. Moreover, the downward-sloping extension allows the flames generated by the outer flame cap to be concentrated inward, preventing them from drifting outward. The heat is concentrated within the space enclosed by the inner annular surface, improving energy efficiency. Attached Figure Description

[0027] 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.

[0028] 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.

[0029] Figure 1 This is a schematic diagram of the structure of the gas stove described in the embodiment of this application; Figure 2 This is a schematic diagram of the burner structure of the gas stove described in the embodiments of this application; 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; Figure 4 This is a top view of the burner of the gas stove described in the embodiment of this application; Figure 5 Examples of this application Figure 4 AA section view in the middle; Figure 6 Examples of this application Figure 5 Enlarged view of point B; Figure 7 Examples of this application Figure 5 Enlarged view of point C; 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; Figure 9 This is a cross-sectional view of the energy-concentrating disk described in the embodiments of this application; Figure 10 This is a schematic diagram of the liquid receiving tray described in the embodiments of this application; Figure 11 Examples of this application Figure 10 Enlarged diagram of point D; Figure 12 This is a schematic diagram of the structure of the outer flame cap as described in an embodiment of this application; Figure 13 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.

[0030] in: 1. Panel; 2. Burner; 21. Furnace head; 211. Injector tube; 22. Flame distributor; 23. Outer flame cap; 231. Inner annular surface; 232. Flame hole; 24. Inner flame cap; 25. Concentrating plate; 251. Concentrating cavity; 2511. Convection cavity; 2512. Insulation cavity; 252. First air inlet; 253. First air outlet; 254. Guide column; 255. Baffle plate; 26. Liquid receiving plate; 261. Air cavity; 262. Second air inlet; 263. Second air outlet; 264. Protrusion; 265. Connecting hole; 2651. Flanged edge; 27. Baffle plate; 28. Fan. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] Considering that in the gas stoves of related technologies, during use, some of the heat generated by the burner combustion is transferred to the burner head and energy-concentrating plate, resulting in this portion of heat not being used for cooking, thus affecting the full utilization of heat energy to some extent. This application provides a gas stove to solve the above-mentioned problem.

[0034] 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.

[0035] The base has an internal chamber 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.

[0036] 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.

[0037] 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 3This 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 AA section view in the image.

[0038] The burner 2 includes a burner head 21, a flame distributor 22, an outer flame cap 23, an inner flame cap 24, a concentrating plate 25, and a liquid collection tray 26. 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. The burner head 21 also includes an injector tube 211, which connects to the flame distributor 22 and is used to inject combustion gas and primary air into the flame distributor 22. 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 24 are mounted on the flame distributor 22. The concentrating plate 25 surrounds the outer flame cap 23, and the liquid collection tray 26 is located below the concentrating plate 25 and above the panel 1, covering the clearance opening on the panel 1 to collect liquid and prevent leakage.

[0039] like Figure 5 and Figure 6 As shown, where Figure 6 Examples of this application Figure 5 The enlarged schematic diagram at point B shows that, in this embodiment of the application, the energy-concentrating disk 25 has an energy-concentrating cavity 251 inside, a first air inlet 252 on the outer wall of the energy-concentrating disk 25, and a first air outlet 253 on the bottom wall of the energy-concentrating disk 25. The first air inlet 252 and the first air outlet 253 are connected to the energy-concentrating cavity 251, allowing outside air to enter the energy-concentrating cavity 251 through the first air inlet 252 and exit through the first air outlet 253. Multiple first air inlets 252 and multiple first air outlets 253 can be provided, and these multiple first air inlets 252 and multiple first air outlets 253 are evenly distributed along the circumference of the energy-concentrating disk 25.

[0040] like Figure 5 and Figure 7 As shown, Figure 7 Examples of this application Figure 5The enlarged schematic diagram at point C is shown. The aforementioned liquid receiving tray 26 includes an air chamber 261, a second air inlet 262, and a second air outlet 263. The air chamber 261 is located inside the liquid receiving tray 26 and can have an annular chamber structure. The second air inlet 262 is located above the top of the liquid receiving tray 26 and is connected to the first air outlet 253 of the energy concentrating tray 25, allowing outside air in the energy concentrating tray 251 to enter the air chamber 261 through the first air outlet 253 and the second air inlet 262. The aforementioned second air outlet 263 is located on the side of the liquid receiving tray 26 facing the burner head 21, so that outside air entering the air chamber 261 flows to the burner head 21 through the second air outlet 263.

[0041] Through the structure of the aforementioned energy-concentrating plate 25 and liquid-receiving plate 26, outside air sequentially passes through the first air inlet 252, energy-concentrating cavity 251, first air outlet 253, second air inlet 262, air cavity 261, and second air outlet 263 (the flow path of outside air is...). Figure 5 The air (as shown by the arrow) blows toward the burner head 21, and after absorbing the heat of the burner head 21 itself, it flows to the inlet of the ejector tube 211 of the burner head 21, and is injected into the flame distributor 22 by the ejector tube 211 as a supplement to the primary air.

[0042] In this embodiment, the above-described structure allows outside air to enter the energy-concentrating chamber 251 through the first air inlet 252, first absorbing the heat accumulated in the energy-concentrating plate 25, then flowing through the first air outlet 253 and the second air inlet 262 into the air cavity 261 of the liquid-receiving plate 26, and finally flowing from the second air outlet 263 to the burner head 21. After further absorbing the heat of the burner head 21 itself, the airflow is drawn into the injector tube 211 under the negative pressure, serving as primary combustion air replenishment. This structure, on the one hand, continuously replenishes primary air, effectively improving the deficiency of insufficient primary air replenishment in traditional burners and significantly improving combustion completeness; on the other hand, it recovers the waste heat of the energy-concentrating plate 25 and the burner head 21 in stages, preheating the outside air to increase the initial temperature of the combustion reaction, accelerate the flame propagation rate, further enhance the combustion conditions, and significantly improve combustion completeness and overall thermal efficiency. On the other hand, the embodiments of this application efficiently recover and reuse the heat that was originally lost and wasted by the burner head 21 and the energy-concentrating plate 25, realize the resource utilization of waste heat, reduce the ineffective loss of heat energy, greatly improve the overall heat energy utilization rate of the gas stove, and achieve better energy-saving effect.

[0043] Furthermore, in this embodiment, the first air inlet 252 is located on the outer wall of the energy-concentrating plate 25, allowing outside air to flow from the outside to the inside towards the injector pipe 211 in a counter-current manner. This ensures that all outside air enters from the top outside of the burner, solving the problem of insufficient primary air volume caused by traditional gas stoves only drawing air from inside the cabinet. Moreover, the placement of the first air inlet 252 avoids affecting the combustion performance of the burner 2, and its location also ensures that the first air inlet 252 is not affected by food residue, food, or boiling water, guaranteeing smooth airflow.

[0044] In this embodiment of the application, in order to better guide the outside air that has absorbed the heat from the energy-concentrating plate 25 and the burner head 21 into the ejector tube 211, such as Figure 2 and Figure 3 As shown, along the ejection direction of the ejector tube 211, a baffle 27 is provided upstream of the inlet end of the ejector tube 211. Outside air that has absorbed heat from the burner head 21 is blown towards the baffle 27 and, after being blocked by the baffle 27, is drawn into the ejector tube 211. In other words, the baffle 27 acts as a barrier, concentrating, and guiding element for the heat-absorbing outside air, allowing it to concentrate at the inlet area of ​​the ejector tube 211, thus steadily increasing the primary air intake and uniformity of the ejector tube 211. This further replenishes the primary air required for combustion, maintains the initial high temperature of the combustion reaction, steadily accelerates the flame propagation speed, and further improves combustion completeness and thermal efficiency.

[0045] The baffle 27 can be roughly U-shaped, so that when outside air flows to the baffle 27, part of it is directly blocked by the middle area of ​​the baffle 27 and guided by the areas on both sides to the inlet end of the ejector tube 211.

[0046] Furthermore, to better facilitate the delivery of outside air to the inlet of the injector tube 211, the burner 2 in this embodiment may also include a fan 28, which is configured to drive outside air from the second air outlet 263 towards the burner head 21. By forcibly driving the outside air flow through the fan 28, the delivery efficiency and uniformity of the outside air can be significantly improved. Moreover, it allows outside air to continuously pass through the energy-concentrating plate 25 and the burner head 21, constantly absorbing heat from them. In addition, in conjunction with the flow-guiding effect of the baffle 27, the outside air that has absorbed heat from the energy-concentrating plate 25 and the burner head 21 can be quickly drawn into the injector tube 211 under negative pressure, continuously and stably replenishing the primary air required for combustion.

[0047] Optionally, such as Figure 7As shown, the liquid receiving tray 26 extends downwards and has a protrusion 264. The protrusion 264 is hollow to form part of the air cavity 261, and the side wall of the protrusion 264 is provided with the aforementioned second air outlet 263. The aforementioned fan 28 is placed inside the protrusion 264 and located at the second air outlet 263. By installing the fan 28 close to the second air outlet 263, the airflow resistance and pressure loss along the way can be reduced, allowing the airflow output by the fan 28 to be blown directionally and smoothly through the second air outlet 263 to the burner head 21 area.

[0048] Furthermore, the downward extension of the protrusion 264 allows for efficient use of vertical space without increasing the lateral volume of the burner 2, while also increasing the volume of the air cavity 261. As the final convergence point of the air cavity 261, the protrusion 264 allows outside air within the air cavity 261 to converge at the protrusion 264. Combined with the forced airflow from the fan 28 and the airflow guidance from the baffle 27, this ensures a stable airflow direction and flow rate, guaranteeing a stable and concentrated delivery of outside air to the ejector tube 211.

[0049] It is understandable that the aforementioned fan 28 can be installed not only inside the protrusion 264, but also in other locations, such as on the outer wall of the protrusion 264 and directly opposite the second air outlet 263. Alternatively, a separate bracket can be installed on one side of the burner head 21, and the fan 28 can be mounted on the bracket, as long as it can drive the outside air to flow to the burner head 21 and the ejector tube 211.

[0050] In the embodiments of this application, such as Figure 8 As shown, Figure 8 This is a schematic diagram showing the structure of the energy-concentrating disk 25 described in this embodiment, which includes a first air inlet 252 and a first air outlet 253. The projections of the first air inlet 252 and the first air outlet 253 on the horizontal plane of the energy-concentrating disk 25 are staggered. This staggered distribution of the first air inlet 252 and the first air outlet 253 extends the flow path of outside air within the energy-concentrating cavity 251, allowing the outside air to remain in the energy-concentrating cavity 251 for a longer period, thereby improving the degree of heat energy recovery from the energy-concentrating disk 25.

[0051] Please continue to refer to Figure 7 and Figure 8 The aforementioned energy-concentrating disk 25 extends downward to form a guide column 254. The guide column 254 has a guide channel communicating with the energy-concentrating cavity 251, and one end of the guide channel forms a first air outlet 253. The arrangement of the guide column 254 allows outside air in the energy-concentrating cavity 251 to flow through the guide channel to the air cavity 261 of the liquid receiving disk 26. Furthermore, the guide column 254 can also be used as a support for the energy-concentrating disk 25 to improve the support stability of the energy-concentrating disk 25.

[0052] In some embodiments, such as Figure 9 As shown, Figure 9 This is a cross-sectional view of the energy-concentrating disk 25 described in this embodiment. The energy-concentrating disk 25 has a partition 255 located within the energy-concentrating cavity 251. This partition 255 divides the energy-concentrating cavity 251 into a convection cavity 2511 and a closed heat-insulating cavity 2512. The first air inlet 252 and the first air outlet 253 are both connected to the convection cavity 2511. Thus, the partition 255 divides the energy-concentrating cavity 251 into an independent convection cavity 2511 and heat-insulating cavity 2512. The convection cavity 2511 is used to allow for the circulation and heat exchange of outside air, while the heat-insulating cavity 2512 is used to provide heat insulation for the energy-concentrating disk 25, preventing accelerated heat loss at the burner cap 2. Furthermore, the combined effect of the convection cavity 2511 and the heat-insulating cavity 2512 also prevents excessive heat on the outer wall of the energy-concentrating disk 25, thus avoiding injury to the user.

[0053] In the embodiments of this application, such as Figure 10 As shown, Figure 10 This is a schematic diagram of the liquid receiving tray 26 described in this embodiment. The liquid receiving tray 26 can have several connecting holes 265 located at the bottom of the burner 22. The burner 22 has an annular channel between the outer burner cap 23 and the inner burner cap 24, and the connecting holes 265 are corresponding to the annular channel. Therefore, when the outside air flowing out of the second air outlet 263 encounters the burner head 21, a portion of the outside air will rise due to the resistance of the burner head 21. At this time, through the connecting holes 265 on the liquid receiving tray 26, this portion of outside air can be transported to the annular channel between the outer burner cap 23 and the inner burner cap 24, thus supplementing it as secondary air and further improving the degree of combustion. That is, through the structure of the connecting holes 265, the liquid receiving tray 26 can simultaneously supplement outside air as both primary and secondary air.

[0054] like Figure 11 As shown, Figure 11 Examples of this application Figure 10 Enlarged schematic diagram at point D. The aforementioned connecting hole 265 extends circumferentially upward with a flange 2651. By setting this flange 2651, liquid during the cooking process can be prevented from leaking into the burner head 21 and other structures through the connecting hole 265.

[0055] For reference Figure 12 , Figure 12This 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 located at the top. 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 24. The inner annular surface 231 extends downward at an angle from the apex of the outer surface. The inner annular surface 231 faces the inner flame cap 24 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.

[0056] 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 24, 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.

[0057] In some embodiments, such as Figure 12 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.

[0058] In the above embodiments, such as Figure 12 and Figure 13 As shown, Figure 13 This 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 24. 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.

[0059] 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.

[0060] In some embodiments, the angle α between the inner annular surface 231 and the horizontal plane is 10°-15°.

[0061] In the above embodiments, such as Figure 12 and Figure 13 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 24 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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 liquid receiving plate. The burner head is equipped with an injector tube communicating with the flame distributor. The flame distributor is mounted on the burner head. The outer flame cap and the inner flame cap are both mounted on the flame distributor, with the outer flame cap surrounding the inner flame cap. The concentrating plate surrounds the outer flame cap and has a concentrating cavity inside. The liquid receiving plate is located below the concentrating plate. The energy-concentrating plate is provided with a first air inlet located on the outer side wall and a first air outlet located on the bottom wall. The first air inlet and the first air outlet are both connected to the energy-concentrating cavity. The liquid receiving plate is provided with an air cavity, a second air inlet and a second air outlet. The second air inlet and the second air outlet are both connected to the air cavity. The second air inlet is connected to the first air outlet. Outside air is sequentially blown toward the furnace head through the first air inlet, the energy-concentrating cavity, the first air outlet, the second air inlet, the air cavity, and the second air outlet. After absorbing the heat from the furnace head, it is drawn into the ejector tube by negative pressure. The burner also includes a fan configured to drive outside air from the second air outlet toward the burner head; The liquid receiving tray extends downward and has a protrusion. The interior of the protrusion forms part of the air cavity, and the side wall of the protrusion is provided with the second air outlet. The fan is placed inside the protrusion and is located at the second air outlet.

2. The gas stove according to claim 1, characterized in that, Along the ejection direction of the ejector tube, a baffle is provided upstream of the inlet end of the ejector tube. After absorbing the heat from the furnace head, the outside air blows towards the baffle and is drawn into the ejector tube after being blocked by the baffle.

3. The gas stove according to claim 1 or 2, 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.

4. The gas stove according to claim 1 or 2, characterized in that, The projections of the first air inlet and the first air outlet on the horizontal plane are staggered.

5. The gas stove according to claim 1 or 2, characterized in that, The energy-concentrating plate is provided with a partition located inside the energy-concentrating cavity. The partition divides the energy-concentrating cavity into a convection cavity and a closed heat insulation cavity. The first air inlet and the first air outlet are both connected to the convection cavity.

6. The gas stove according to claim 1 or 2, characterized in that, The energy-concentrating disk extends downward to form a guide column, and the guide column has a guide channel that connects to the energy-concentrating cavity. One end of the guide channel forms the first air outlet.

7. The gas stove according to claim 1 or 2, characterized in that, The outer flame cap includes an outer surface located at the top, 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.

8. The gas stove according to claim 7, characterized in that, The outer flame cover is provided with a flame hole that opens vertically and penetrates the inner annular surface.

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