Combustion device and hob

Abstract

The utility model belongs to kitchen utensil technical field discloses a kind of combustion device and stove. Combustion device includes hearth, outer ring burner, inner ring infrared burner and air supply module;Hearth has outer ring ejection passage and inner ring ejection passage;Inner ring infrared burner is installed in the upper end center of hearth, and inner ring ejection passage is used to supply gas to inner ring infrared burner;Outer ring burner is installed in the upper end of hearth and is spacedly set on the outside of inner ring infrared burner, and outer ring ejection passage is used to supply gas to outer ring burner;Air supply module is used to send air to outer ring ejection passage. The utility model can enhance the primary air supplement of outer ring burner combustion, and the infrared combustion of inner ring infrared burner is combined with the air supplement at the place of outer ring burner, to improve the combustion performance of combustion device.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a combustion device and a stove. Background Technology

[0002] The combustion device is the core component of a gas stove. It heats the cooking utensils by igniting and burning the gas. The combustion performance of the combustion device directly determines the performance of the stove.

[0003] The combustion device typically includes a burner cap, a gas distribution seat, and a furnace base arranged sequentially from top to bottom. The burner cap includes an inner ring infrared burner and an outer ring burner spaced outside the inner ring infrared burner. The furnace base is provided with an inner ring ejector channel for supplying gas to the inner ring infrared burner and an outer ring ejector channel for supplying gas to the outer ring burner. The inlet ends of the outer ring ejector channel and the inner ring ejector channel are respectively provided with nozzles. The gas is injected into the ejector channel through the nozzles, and at the same time, the negative pressure formed by the gas injection draws external air into the ejector tube, realizing the primary gas replenishment for gas combustion.

[0004] Existing combustion devices achieve natural air intake when the nozzle injects gas into the corresponding inner and outer ring ejector channels. The air and gas mix in the ejector channels and are then supplied to the corresponding inner ring burner or outer ring burner. However, due to insufficient air injection capacity, there is a tendency for insufficient air intake and uneven mixing of air and gas inside the furnace seat, resulting in incomplete combustion and low combustion thermal efficiency. Utility Model Content

[0005] One objective of this invention is to provide a combustion device that can improve the combustion completeness and thermal efficiency of the combustion device.

[0006] The second objective of this invention is to provide a stove that can improve the completeness of combustion and the thermal efficiency of combustion.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A combustion device, comprising:

[0009] The furnace base has an outer ring ejector channel and an inner ring ejector channel;

[0010] An inner ring infrared burner is installed at the upper center of the furnace base, and the inner ring ejector channel is used to supply gas to the inner ring infrared burner.

[0011] An outer ring burner is installed on the upper end of the furnace base and spaced out from the outer side of the inner ring infrared burner. The outer ring ejector channel is used to supply gas to the outer ring burner.

[0012] An air supply module is used to blow air into the outer ring ejector channel.

[0013] The beneficial effects of this utility model are:

[0014] The combustion device provided by this utility model, by setting an air supply module to blow air into the outer ring ejector channel, can realize primary air replenishment of the outer ring ejector channel, increase the air intake of the outer ring ejector channel, enhance the mixing uniformity of air and gas in the outer ring ejector channel, and thus improve the combustion completeness of the outer ring burner. By setting the inner ring burner as an inner ring infrared burner, the air required for combustion of the inner ring infrared burner can be reduced, so that the inner ring infrared burner can achieve high-efficiency combustion without much air replenishment, effectively enhancing the overall combustion completeness of the combustion device and improving the overall energy efficiency of the combustion device. Furthermore, since only air needs to be blown into the outer ring ejector channel, the structure of the air supply module can also be effectively simplified, reducing the overall cost of the combustion device.

[0015] As an optional technical solution for a combustion device, the air supply module includes a damper plate and an air supply assembly. The damper plate covers at least the air inlet end of the outer ring ejector channel. The damper plate has an outer ring center hole coaxial with the outer ring ejector channel and an outer ring air inlet separated from the outer ring center hole. The air supply assembly is installed on the damper plate, and the air supply port of the air supply assembly is directly opposite the outer ring air inlet.

[0016] The combustion device further includes an outer ring nozzle, which is installed on the damper plate and has its outlet end coaxially inserted through the center hole of the outer ring.

[0017] By mounting the outer ring nozzle and air supply assembly on the damper plate, the furnace base, outer ring nozzle, and air supply assembly are connected via the damper plate to form a modular assembly that can be disassembled and reassembled as a whole, facilitating the assembly and transportation of the combustion device. Simultaneously, since the air supply assembly is mounted on the damper plate, its installation does not require structural modifications to the furnace base; the air supply assembly can be installed and assembled independently, enabling a modular configuration of the furnace base, inner ring infrared burner, and outer ring burner, reducing the cost of improving the combustion device. Furthermore, the jet outlet of the outer ring nozzle is coaxially aligned with the outer ring ejector channel, while an outer ring air inlet offset from the outer ring nozzle is provided on the damper plate. This offset alignment of the air supply inlet and the jet outlet of the outer ring nozzle on the inlet end face of the outer ring ejector tube prevents the air blown by the air supply assembly from forming an air curtain near the jet outlet, thus avoiding interference with the jet's jet propulsion and the ability of the gas injection to draw in natural air. This improves the reliability of gas supply and the adequacy of air replenishment, enhancing the user experience of the combustion device.

[0018] As an optional technical solution for a combustion device, the air supply assembly includes an air supply fan and a fan base. The fan base is installed on the damper plate and has the air supply port. The air supply fan is installed on the side of the fan base away from the damper plate, and the air outlet of the air supply fan is connected to the air supply port.

[0019] The outer ring nozzle has an L-shaped structure and is partially located between the damper plate and the fan base. The outlet end of the outer ring nozzle passes through the damper plate and is coaxially arranged with the inlet end of the outer ring ejector channel. The inlet end of the outer ring nozzle extends outward from the outside of the air supply assembly in a direction away from the inner ring ejector channel.

[0020] By setting up a fan base, it is easier to modularize the air supply components, improve the overall disassembly and assembly performance of the air supply components, and enhance the installation convenience of the air supply components and damper plates. By setting the outer ring nozzle into an L-shaped structure, it is possible to ensure that the air outlet of the outer ring nozzle is coaxially aligned with the outer ring ejector channel, while allowing the air inlet of the outer ring nozzle to extend radially along the outer ring nozzle to avoid the air supply components. This achieves the perpendicularity of the air inlet direction and the air outlet direction of the outer ring nozzle, simplifies the structure of the outer ring nozzle, and ensures the convenience of gas supply to the outer ring ejector tube.

[0021] As an optional technical solution for a combustion device, the distance between the air outlet and the damper plate is greater than or equal to 0 and less than or equal to 25 mm;

[0022] And / or, at least two outer ring air inlets are spaced apart around the axis of the outer ring ejector channel, and at least two air outlets are spaced apart around the axis of the outer ring ejector channel, with each air outlet directly opposite one of the outer ring air inlets.

[0023] By setting the spacing to be less than or equal to 25mm, it is ensured that the air blown out of the air outlet can smoothly enter the outer ring ejector channel, and to prevent some air volume from diffusing to the outside of the outer ring air inlet due to the distance between the air outlet and the damper plate.

[0024] By setting at least two outer ring air inlets, the uniformity of air supply in the circumferential direction of the outer ring ejector channel can be improved, thereby enhancing the mixing uniformity of fuel gas and air within the outer ring ejector channel.

[0025] As an optional technical solution for the combustion device, the air supply assembly further includes an air supply nozzle, which is installed on the side of the fan base facing the outer ring injection channel, and the air inlet of the air supply nozzle is connected to the air outlet of the air supply fan, and the air outlet of the air supply nozzle forms the air supply port.

[0026] By setting air supply nozzles, the air supply pressure of the air supply component can be increased, thereby allowing the air blown by the air supply fan to smoothly enter the outer ring injection channel, improving the uniformity of air and gas mixing in the outer ring injection channel.

[0027] As an optional technical solution for the combustion device, the fan base has an air cavity, and the air outlet is provided on the side of the fan base facing the damper plate. The air outlet is connected to the air cavity, and the air outlet of the air supply fan is connected to the air cavity.

[0028] By setting up an air cavity, the air blown in by the blower first enters the air cavity through the air cavity inlet, and then is distributed to the air outlet by the air cavity. This can improve the uniformity of air volume at the air outlet and facilitate the setting of multiple air outlets.

[0029] As an optional technical solution for the combustion device, the fan base includes a first base body and a second base body. The second base body is detachably connected to the side of the first base body away from the outer ring ejector channel and together with the first base body forms the air cavity. The air supply fan is installed on the second base body, and the first base body is connected to the damper plate. This configuration improves the ease of processing the fan base.

[0030] As an optional technical solution for the combustion device, the damper plate is provided with a mounting boss protruding in the direction away from the outer ring injection channel. Two mounting bosses are provided at a lateral interval. The radial extension of the outer ring nozzle along the outer ring injection channel passes through one of the mounting bosses. Mounting arms extend from opposite sides of the blower base in the direction toward the damper plate. The two mounting arms are detachably connected to the two mounting bosses respectively.

[0031] As an optional technical solution for the combustion device, the air supply assembly includes an air supply fan for supplying air to the outer ring ejector channel, and the rotational speed of the air supply fan can be adjusted according to the amount of gas in the outer ring ejector channel.

[0032] A stove, comprising the combustion device as described above.

[0033] The stove provided by this utility model, by adopting the above-mentioned combustion device, can improve combustion completeness and combustion thermal efficiency, and reduce the improvement cost of the stove. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the combustion device provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the disassembled structure of the combustion device provided in an embodiment of the present utility model;

[0036] Figure 3 A cross-sectional view of the combustion device provided in an embodiment of this utility model;

[0037] Figure 4 A cross-sectional view of the combustion device provided in an embodiment of this utility model from another perspective;

[0038] Figure 5 for Figure 4 A magnified view of a section at point I;

[0039] Figure 6 This is a top view of the combustion device provided in an embodiment of the present invention;

[0040] Figure 7 This is a partial structural schematic diagram of the combustion device provided in an embodiment of the present utility model;

[0041] Figure 8 This is a partial structural diagram of the combustion device provided in an embodiment of the present invention.

[0042] In the picture:

[0043] 100. Air supply assembly; 200. Furnace base; 201. Outer ring ejector tube; 2011. Outer ring ejector channel; 202. Inner ring ejector tube; 2021. Inner ring ejector channel; 300. Damper plate; 301. Plate body; 3011. Outer ring air inlet; 3012. Inner ring air inlet; 302. Mounting boss; 303. Surrounding part; 400. Outer ring nozzle; 401. Vent pipe; 4011. First pipe section; 4012. Second pipe section; 402. Gas nozzle; 500. Inner ring nozzle; 600. Inner ring infrared burner; 700. Outer ring burner; 701. Gas distribution seat; 702. Outer ring flame cap;

[0044] 1. Air supply fan;

[0045] 2. Fan base; 21. First base body; 211. Cavity section; 212. Mounting arm; 2121. First arm section; 2122. Second arm section; 213. Boss section; 22. Second base body; 221. End plate section; 2211. Ventilation port; 222. Positioning ring section; 223. Connecting section; 224. Support section; 2241. Base plate section; 2242. Mounting column section; 2243. Support rib section; 23. Air cavity;

[0046] 3. Air supply nozzle; 31. Fixing part; 32. Nozzle part; 33. Air injection channel. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0051] This embodiment provides a combustion device that can improve combustion completeness, combustion thermal efficiency, and the performance of the combustion device.

[0052] like Figures 1 to 4As shown, the combustion device includes a furnace base 200, an inner ring infrared burner 600, an outer ring burner 700, and an air supply module. The furnace base 200 has an inner ring ejector tube 202 and an outer ring ejector tube 201. The inner cavity of the inner ring ejector tube 202 forms an inner ring ejector channel 2021, and the inner cavity of the outer ring ejector tube 201 forms an outer ring ejector channel 2011. The inner ring infrared burner 600 is installed at the upper center of the furnace base 200, and the inner ring ejector channel 2021 supplies air to the inner ring infrared burner 600. The outer ring burner 700 is installed at the upper end of the furnace base 200 and spaced outside the inner ring infrared burner 600. The outer ring ejector channel 2011 supplies air to the outer ring burner 700. The air supply module blows air into the outer ring ejector channel 2011.

[0053] The combustion device provided in this embodiment, by setting an air supply module to blow air into the outer ring ejector channel 2011, can achieve primary air replenishment of the outer ring ejector channel 2011, increase the air intake of the outer ring ejector channel 2011, enhance the mixing uniformity of air and gas in the outer ring ejector channel 2011, thereby improving the combustion completeness at the outer ring burner 700; by setting the inner ring burner cap as the inner ring infrared burner 600, the air required for combustion of the inner ring infrared burner 600 can be reduced, thereby enabling the inner ring infrared burner 600 to achieve high-efficiency combustion without much air replenishment, effectively enhancing the overall combustion completeness of the combustion device and improving the overall energy efficiency of the combustion device; furthermore, since only air needs to be blown into the outer ring ejector channel 2011, the structure of the air supply module can also be effectively simplified, reducing the overall cost of the combustion device.

[0054] The combustion device also includes an inner ring nozzle 500 and an outer ring nozzle 400. The inner ring nozzle 500 is installed at the air inlet end of the inner ring ejector channel 2021 and is used to supply gas to the inner ring ejector channel 2021. The outer ring nozzle 400 is installed at the air inlet end of the outer ring ejector channel 2011 and is used to supply gas to the outer ring ejector channel 2011.

[0055] In this embodiment, the outer ring burner 700 includes a gas distribution seat 701 disposed on the upper end of the furnace base 200 and an outer ring flame cap 702 mounted on the gas distribution seat. The gas distribution seat 701 has an annular gas distribution chamber, and the outer ring flame cap 702 is provided with an outer ring flame hole. The gas distribution chamber connects the gas outlet end of the outer ring ejector channel 2011 and the outer ring flame hole. After the fuel gas and air in the outer ring ejector channel 2011 are mixed, they are distributed by the gas distribution seat 701 and then enter the flame hole of the outer ring flame cap 702.

[0056] In this embodiment, infrared radiation combustion is used at the inner ring infrared burner 600. By using flameless combustion, the heat generated at the inner ring infrared burner 600 is transferred to the bottom of the pot through thermal radiation, which can greatly increase the heat utilization rate. For example, the diameter of the inner ring infrared burner 600 can be designed to range from 20mm to 80mm, and can be, but is not limited to, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, or 80mm; the thickness is 5mm to 25mm, and can be, but is not limited to, 5mm, 7mm, 9mm, 11mm, 13mm, 15mm, 17mm, 19mm, 21mm, 23mm, or 25mm; the inner ring flame holes are designed as micropores with a diameter of 0.6mm to 2mm, wherein the diameter can be, but is not limited to, 0.6mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, or 2mm; the spacing between adjacent inner ring flame holes is between 1mm and 2mm, specifically, can be, but is not limited to, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, or 2mm. The number of inner ring flame holes is evenly distributed according to the diameter, and the material can be ceramic plate or metal plate.

[0057] It is worth noting that the specific structure and related matching structure of the furnace base 200, the gas distribution base 701, the inner ring infrared burner 600 and the outer ring burner 700 can be set with reference to the existing technology. This is not the focus of this utility model and will not be described in detail here.

[0058] like Figures 5 to 8 As shown, in this embodiment, the air supply module includes a damper plate 300 and an air supply assembly 100. The damper plate 300 covers at least the outer ring ejection channel 2011. The damper plate 300 has an outer ring center hole coaxial with the outer ring ejection channel 2011 and an outer ring air inlet 3011 separated from the outer ring center hole. The outer ring nozzle 400 is installed on the damper plate 300 and its air outlet end is coaxially inserted through the outer ring center hole.

[0059] By mounting both the outer ring nozzle 400 and the air supply assembly 100 on the damper plate 300, the furnace base 200, outer ring nozzle 400, and air supply assembly 100 are connected via the damper plate 300 to form a modular assembly that can be disassembled as a whole, facilitating the assembly and handling of the combustion device. Simultaneously, since the air supply assembly 100 is mounted on the damper plate 300, its installation does not require structural modifications to the furnace base 200; the air supply assembly 100 can be installed and assembled independently, enabling a modular configuration of the furnace base 200, inner ring infrared burner 600, and outer ring burner 700, reducing costs. The improvement cost of the combustion device; furthermore, the jet port of the outer ring nozzle 400 is coaxially arranged with the outer ring ejector channel 2011, while the air damper plate 300 has an outer ring air inlet 3011 that is offset from the outer ring nozzle 400. Since the air supply port and the jet port of the outer ring nozzle 400 are misaligned on the end face of the air inlet end of the outer ring ejector tube 201, it can avoid the air blown by the air supply assembly 100 from forming an air curtain near the jet port, which would affect the jet of the jet port and the ability of the gas injection to eject natural air. This improves the reliability of gas supply and the sufficiency of air replenishment, and improves the user experience of the combustion device.

[0060] Furthermore, the damper plate 300 covers the inner ring ejector channel 2021 and its air inlet. The damper plate 300 has an inner ring central hole coaxial with and connected to the inner ring ejector channel 2021, and an inner ring air inlet 3012 spaced apart from the inner ring central hole. An inner ring nozzle 500 is mounted on the damper plate 300 and coaxially inserted into the inner ring central hole. When the inner ring nozzle 500 injects gas, a negative pressure is formed within the inner ring ejector channel 2021. Under this negative pressure, external air enters the inner ring ejector channel 2021 through the inner ring air inlet 3012.

[0061] It should be noted that the damper plate 300 is installed at the air inlet end of the inner ring ejector tube 202 and the outer ring ejector tube 201. The installation structure of the damper plate 300 on the furnace base 200 can be set with reference to the existing technology. This is not the focus of this embodiment and will not be described in detail here.

[0062] In another embodiment, the outer ring nozzle 400 and the inner ring nozzle 500 are mounted on the damper plate 300, and the combustion device and the air supply assembly 100 can be mounted separately on the bottom shell of the stove. In yet another embodiment, the damper plate 300 may not be provided, or the damper plate 300 may be provided only at the air inlet end of the inner ring injector 202, and the outer ring nozzle 400 and the air supply assembly 100 may be directly mounted at the air inlet end of the outer ring injector 201.

[0063] To improve the uniformity of air supply, at least two air inlets 3011 are spaced apart around the axis of the outer ring ejector tube 201, and at least two air outlets are spaced apart around the axis of the outer ring ejector tube 201. Each outer ring air inlet 3011 is also provided with an air outlet, so as to improve the uniformity of air supply in the circumferential direction of the outer ring ejector channel 2011, thereby improving the uniformity of the mixing of fuel gas and air in the outer ring ejector channel 2011.

[0064] In this embodiment, two outer ring air inlets 3011 are arranged vertically opposite each other to avoid the outer ring nozzle 400 obstructing the outer ring air inlets 3011. The outer ring air inlets 3011 are preferably fan-shaped, with the center of the fan-shaped opening located on the axis of the outer ring ejector channel 2011, thereby increasing the air intake area of ​​the outer ring air inlets 3011 while avoiding structural interference. In other embodiments, one, three, or more outer ring air inlets 3011 may be provided.

[0065] Two air outlets are arranged vertically opposite each other, with each outlet directly facing one of the two outer ring air inlets 3011. This arrangement satisfies the requirement for uniform airflow while simplifying the structure, reducing the size of the air supply assembly 100, and lowering costs. In other embodiments, multiple air outlets may be spaced around the axis of the outer ring ejector channel 2011, and each outer ring air inlet 3011 may correspond to one or more air outlets.

[0066] The air supply assembly 100 includes an air supply fan 1 and a fan base 2. The fan base 2 is mounted on the damper plate 300 and has an air outlet. The air supply fan 1 is mounted on the side of the fan base 2 away from the damper plate 300, and the air outlet of the air supply fan 1 is connected to the air outlet. The outer ring nozzle 400 has an L-shaped structure and is partially located between the damper plate 300 and the fan base 2. The air outlet of the outer ring nozzle 400 passes through the damper plate 300 and is coaxially arranged with the air inlet of the outer ring ejector channel 2011. The air inlet of the outer ring nozzle 400 extends outward from the air supply assembly 100 in a direction away from the inner ring ejector channel 2021. Specifically, the damper plate 300 has a central hole coaxially arranged with the outer ring ejector tube 201, and one side of the outer ring nozzle 400 coaxially passes through the central hole.

[0067] By setting the fan base 2, modular design of the air supply assembly 100 is facilitated, improving the overall disassembly and assembly performance of the air supply assembly 100 and the ease of installation of the air supply assembly 100 and the damper plate 300. By setting the outer ring nozzle 400 into an L-shaped structure, while ensuring that the air outlet of the outer ring nozzle 400 is coaxially aligned with the outer ring ejector channel 2011, the air inlet of the outer ring nozzle 400 can extend radially to avoid the air supply assembly 100, achieving perpendicularity between the air inlet direction and the air outlet direction of the outer ring nozzle 400, simplifying the structure of the outer ring nozzle 400, and ensuring convenient gas supply to the outer ring ejector tube 201. In other embodiments, the outer ring nozzle 400 can also adopt a Z-shaped structure.

[0068] In this embodiment, the rotational speed of the blower 1 can be adjusted according to the amount of gas in the outer ring ejector channel 2011, thereby adjusting the amount of air supply according to the combustion requirements of the outer ring burner 700, so that the amount of air supply matches the amount of gas injected by the outer ring nozzle 400, ensuring complete combustion and combustion stability.

[0069] For example, the primary air coefficient of the outer ring burner 700 can be controlled to be less than 0.88 and greater than 0.7 by controlling the rotational speed of the air supply fan 1. However, it is worth noting that the value of the primary air coefficient should be specifically set according to the type of gas and the specific structure of the combustion device.

[0070] The outer ring nozzle 400 includes a vent pipe 401 and a gas nozzle 402. The vent pipe 401 includes a first pipe section 4011 and a second pipe section 4012 arranged in an L-shape. The first pipe section 4011 is coaxially arranged with the outer ring ejector channel 2011 and coaxially passes through the central hole. The second pipe section 4012 extends radially outward along the outer ring ejector pipe 201 and connects to the damper plate 300. The gas nozzle 402 is installed at the outlet end of the first pipe section 4011 and is located on the side of the damper plate 300 facing the outer ring ejector pipe 201. By setting the gas nozzle 402, the gas ejection force of the outer ring gas channel can be enhanced, and the gas ejection pressure can be guaranteed. By setting the vent pipe 401, it is convenient to install the outer ring nozzle 400 and to control the intake and exhaust directions.

[0071] The inner wall of the outlet end of the first pipe section 4011 is provided with an internal thread. The gas nozzle 402 includes a mounting part and a nozzle head that are coaxially connected. A positioning step surface facing the first pipe section 4011 is formed between the mounting part and the nozzle head. The mounting part is screwed into the inside of the first pipe section 4011 and the end face of the first pipe section 4011 abuts against the positioning step surface. The nozzle head is located on the outside of the first pipe section 4011.

[0072] In this embodiment, the vent pipe 401 is installed on the damper plate 300. Specifically, the damper plate 300 includes a main body 301 and a perimeter portion 303 surrounding the main body 301. The perimeter portion 303 cooperates with the air inlet ends of the outer ring ejector pipe 201 and the inner ring ejector pipe 202. The main body 301 has an outer ring air inlet 3011 and an inner ring air inlet 3012. A mounting boss 302 protrudes from the main body 301 of the damper plate 300, and the second pipe portion 4012 passes through the mounting boss 302, thereby achieving stable installation of both ends of the vent pipe 401 on the damper plate 300. The air inlet end of the second pipe portion 4012 extends outward from the mounting boss 302 to facilitate connection with the gas supply pipeline.

[0073] Furthermore, the outer wall of the air inlet end of the second pipe section 4012 is provided with external threads, and a locking nut is screwed onto the second pipe section 4012. The locking nut abuts against the mounting boss 302 to further secure the outer ring nozzle 400 to the damper plate 300. At the same time, the external threads on the second pipe section 4012 also facilitate the connection between the vent pipe 401 and the gas supply pipeline.

[0074] The fan base 2 has an air cavity 23. An air outlet is provided on the side of the fan base 2 facing the damper plate 300, and the air outlet is connected to the air cavity 23. The air supply fan 1 is installed on the side of the fan base 2 away from the outer ring ejector pipe 201, and the air outlet of the air supply fan 1 is connected to the air cavity 23. By setting the air cavity 23, the air blown in by the air supply fan 1 first enters the air cavity 23 through the inlet of the air cavity 23, and then is distributed by the air cavity 23 to multiple air outlets, thereby improving the air volume uniformity at each air outlet.

[0075] The fan base 2 includes a base body with a mounting arm 212 extending from the base body towards the damper plate 300. The air supply fan 1 and the air outlet are both located on the base body. The mounting arm 212 is detachably connected to the damper plate 300, and the outer ring nozzle 400 is located between the base body and the damper plate 300. The mounting arm 212 facilitates the cross-mounting of the fan base 2, improving the ease of installation on the damper plate 300 while preventing interference between the base body and the outer ring nozzle 400. Specifically, the air cavity 23 is located on the base body.

[0076] The damper plate 300 has mounting bosses 302 protruding from it in the direction away from the outer ring ejector tube 201. Two mounting bosses 302 are spaced laterally. The radial extension of the outer ring nozzle 400 along the outer ring ejector tube 201 passes through one mounting boss 302. Mounting arms 212 are provided on opposite sides of the base body, and each mounting arm 212 is detachably connected to one of the two mounting bosses 302. This arrangement allows the mounting structure of the outer ring nozzle 400 and the fan base 2 on the damper plate 300 to be shared, improving structural compactness and reducing size.

[0077] The mounting arm 212 includes a first arm portion 2121 and a second arm portion 2122 connected at an angle. One end of the first arm portion 2121 is connected to the base body, and the other end of the first arm portion 2121 extends in a direction away from the other mounting arm 212. The second arm portion 2122 extends axially along the outer ring ejection channel 2011. This arrangement of the first arm portion 2121 increases the distance between the two second arms portion 2122, allowing the two mounting bosses 302 to be located on opposite sides of the outer ring air inlet 3011, while simultaneously reducing the size and weight of the base body. In other embodiments, the mounting arm 212 may also extend only axially along the outer ring ejection channel 2011.

[0078] The mounting arm 212 has a first positioning surface and a second positioning surface arranged at an angle. The first positioning surface is fitted with the upper end of the mounting boss 302, and the second positioning surface is fitted with the side of the mounting boss 302 away from the outer ring ejector tube 201. This facilitates the connection and positioning of the mounting arm 212 and the mounting boss 302, improving assembly efficiency and accuracy. Preferably, the first positioning surface is perpendicular to the second positioning surface to simplify the structure.

[0079] Furthermore, the upper end of the mounting boss 302 is provided with a fastening threaded hole, and the mounting arm 212 is provided with a fastening through hole that passes through the first positioning surface. The fastening through hole and the fastening threaded hole are directly opposite each other. The mounting arm 212 and the mounting boss 302 are connected by fastening threaded parts that pass through the fastening through hole and the fastening threaded hole. The first positioning surface, the second positioning surface, and the fastening through hole are all provided on the second arm portion 2122.

[0080] It is worth noting that in other embodiments, other structures can be used to connect the mounting arm 212 and the mounting boss 302. For example, the mounting leg can be mounted on the side of the mounting boss 302 away from the outer ring ejector tube 201.

[0081] The air supply assembly 100 also includes an air supply nozzle 3, which is installed on the side of the blower base 2 facing the outer ring ejector tube 201. The air inlet of the air supply nozzle 3 is connected to the air outlet of the air supply blower 1, and the air outlet of the air supply nozzle 3 forms an air supply port. Specifically, an air injection channel 33 is formed through the interior of the air supply nozzle 3. The air injection channel 33 is connected to the air chamber 23, and the air injection channel 33 has a tapering tendency from the air inlet end to the air outlet end, so as to realize the jet flow of air from the outlet end of the air injection channel 33. The air outlet of the air injection channel 33 forms an air supply port. By setting the air supply nozzle 3, the air supply pressure of the air supply assembly 100 can be increased, so that the air blown by the air supply blower 1 can smoothly enter the outer ring ejector tube 2011, improving the mixing uniformity of air and gas in the outer ring ejector tube 2011.

[0082] Furthermore, the fan base 2 has a mounting hole for connecting the ventilation cavity 23. The mounting hole corresponds to the air supply nozzle 3, and the air supply nozzle 3 is installed in the mounting hole to improve the ease of installation of the air supply nozzle 3. Specifically, the mounting hole is a threaded hole. The air supply nozzle 3 includes a fixing part 31 and a nozzle part 32 coaxially connected. The fixing part 31 is screwed into the mounting hole, and the nozzle part 32 is located outside the mounting hole and abuts against the fan base 2 to improve the reliability of the air supply nozzle 3.

[0083] To improve the installation stability of the air nozzle 3, the fan base 2 has a protruding boss 213 on the side facing the outer ring ejector tube 201. The boss 213 is provided in a one-to-one correspondence with the mounting hole, and the mounting hole passes through the corresponding boss 213 to increase the depth of the mounting hole, thereby increasing the mating length between the fan base 2 and the air nozzle 3.

[0084] In this embodiment, the distance between the air outlet and the damper plate 300 is 0-50mm, preferably less than or equal to 25mm. This arrangement can avoid interference between the air supply assembly 100 and the damper plate 300, while ensuring that the air blown out by the air outlet can smoothly enter the outer ring ejector channel 2011. It also prevents some airflow from diffusing outside the outer ring air inlet 3011 due to the distance between the air outlet and the damper plate 300, and avoids interference between the damper plate 300 and the air supply assembly 100 caused by the air outlet being located on the side of the damper plate 300 facing the outer ring ejector channel 2011.

[0085] The fan base 2 includes a detachably mounted first base 21 and a second base 22, which together form an air cavity 23 to facilitate the processing of the fan base 2. Preferably, the second base 22 is located on the side of the first base 21 away from the combustion device. The first base 21 is detachably connected to the damper plate 300, and the air supply fan 1 is detachably mounted on the second base 22, thereby improving the ease of assembly of the fan base 2 with the air supply fan 1 and the damper plate 300.

[0086] The first base 21 includes a cavity portion 211 and a mounting arm 212 connected to the outer wall of the cavity portion 211. The cavity portion 211 has a groove with an opening facing away from the damper plate 300. The second base 22 covers the open end of the cavity portion 211, and the second base 22 and the groove wall together form an air cavity 23. The second base 22 and the cavity portion 211 together form the main body of the base.

[0087] Specifically, the second seat 22 includes an end plate portion 221 and a positioning ring portion 222 protruding from one side of the end plate portion 221. The positioning ring portion 222 is inserted into the groove, and the end plate portion 221 abuts against the end face of the cavity portion 211 to achieve assembly positioning of the first seat 21 and the second seat 22. The cross-section of the groove is a non-circular cross-section, and the shape of the positioning ring portion 222 matches the shape of the groove to restrict relative rotation between the first seat 21 and the second seat 22, thereby ensuring the assembly reliability of the air supply assembly 100.

[0088] Furthermore, the lower side of the cavity 211 and the lower side wall of the groove are both horizontally arranged planar structures to avoid interference between the air supply assembly 100 and the bottom shell of the stove. This reduces the overall footprint of the air supply assembly 100.

[0089] In this embodiment, the positioning ring portion 222 has a connecting portion 223 extending partially in the direction toward the interior of the air cavity 23. The connecting portion 223 and the cavity portion 211 are fastened together by fasteners passing through both. Preferably, multiple fixing portions 31 are provided at circumferential intervals along the positioning ring portion 222 to ensure the assembly stability and reliability of the first seat 21 and the second seat 22. In other embodiments, connecting ears may also be provided protruding on the outer sides of the cavity portion 211 and the end plate portion 221 respectively to achieve fastening of the first seat 21 and the second seat 22.

[0090] The end plate portion 221 has a ventilation opening 2211. The second base portion also includes a support portion 224 connected to the side of the end plate portion 221 away from the first base body 21. The air supply fan 1 is detachably installed on the support portion 224, and the air outlet end of the air supply fan 1 is inserted into the ventilation opening 2211 to improve the installation reliability of the air supply fan 1 on the fan base 2. In this embodiment, the rotating shaft of the air supply fan 1 is vertically arranged, that is, the air supply fan 1 is horizontally arranged to reduce the footprint and improve the installation convenience of the air supply fan 1. In other embodiments, the rotating axis of the air supply fan 1 can also be horizontally arranged. Specifically, in this embodiment, the air inlet of the air supply fan 1 is arranged downward. In other embodiments, the air inlet of the air supply fan 1 can also be arranged upward.

[0091] The support portion 224 includes a base plate portion 2241 and a plurality of mounting columns 2242 protruding from the base plate portion 2241. The base plate portion 2241 is connected to the end plate portion 221, which can be integrally formed, welded, or detachably connected. The volute sidewall of the blower 1 has a connecting protrusion protruding from it. The connecting protrusion is provided with a one-to-one correspondence with the mounting column portion 2242. The connecting protrusion is supported by the mounting column portion 2242, and the connecting protrusion and the mounting column portion 2242 are fastened by fasteners passing through them.

[0092] Preferably, the support portion 224 further includes a support rib portion 2243 protruding from the base plate portion 2241. The support rib portion 2243 is disposed along the edge of the base plate portion 2241 and abuts against the volute. The provision of the support rib portion 2243 can improve the support stability and reliability of the blower 1.

[0093] This utility model also provides a stove, including the above-mentioned combustion device. The stove provided by this utility model, by employing the above-mentioned combustion device, can improve combustion stability and completeness, and reduce the cost of stove improvement.

[0094] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A combustion device, characterized in that, include: The furnace base (200) has an outer ring ejector channel (2011) and an inner ring ejector channel (2021); An inner ring infrared burner (600) is installed at the upper center of the furnace base (200), and the inner ring ejector channel (2021) is used to supply gas to the inner ring infrared burner (600); An outer ring burner (700) is installed on the upper end of the furnace base (200) and spaced out from the outer side of the inner ring infrared burner (600). The outer ring ejector channel (2011) is used to supply gas to the outer ring burner (700). An air supply module is used to blow air into the outer ring ejector channel (2011).

2. The combustion device according to claim 1, characterized in that, The air supply module includes a damper plate (300) and an air supply assembly (100). The damper plate (300) covers at least the air inlet end of the outer ring ejection channel (2011). The damper plate (300) has an outer ring center hole coaxial with the outer ring ejection channel (2011) and an outer ring air inlet (3011) separated from the outer ring center hole. The air supply assembly (100) is installed on the damper plate (300), and the air supply port of the air supply assembly (100) is directly opposite the outer ring air inlet (3011). The combustion device further includes an outer ring nozzle (400), which is installed on the damper plate (300) and has its outlet end coaxially inserted through the center hole of the outer ring.

3. The combustion device according to claim 2, characterized in that, The air supply assembly (100) includes an air supply fan (1) and a fan base (2). The fan base (2) is installed on the damper plate (300) and has the air supply outlet. The air supply fan (1) is installed on the side of the fan base (2) away from the damper plate (300), and the air outlet of the air supply fan (1) is connected to the air supply outlet. The outer ring nozzle (400) has an L-shaped structure and is partially located between the damper plate (300) and the fan base (2). The air inlet end of the outer ring nozzle (400) extends out of the outside of the air supply assembly (100) in a direction away from the inner ring ejector channel (2021).

4. The combustion device according to claim 3, characterized in that, The distance between the air outlet and the damper plate (300) is greater than or equal to 0 and less than or equal to 25 mm; And / or, at least two outer ring air inlets (3011) are spaced apart around the axis of the outer ring ejector channel (2011), and at least two air outlets are spaced apart around the axis of the outer ring ejector channel (2011), with each air outlet directly opposite one of the outer ring air inlets (3011).

5. The combustion device according to claim 3, characterized in that, The air supply assembly (100) further includes an air supply nozzle (3), which is installed on the side of the fan base (2) facing the outer ring ejector channel (2011), and the air inlet of the air supply nozzle (3) is connected to the air outlet of the air supply fan (1), and the air outlet of the air supply nozzle (3) forms the air supply port.

6. The combustion device according to any one of claims 3-5, characterized in that, The fan base (2) has a wind cavity (23), and the fan base (2) is provided with the air outlet on the side facing the damper plate (300). The air outlet is connected to the wind cavity (23), and the air outlet of the air supply fan (1) is connected to the wind cavity (23).

7. The combustion device according to claim 6, characterized in that, The fan base (2) includes a first base (21) and a second base (22). The second base (22) is detachably connected to the side of the first base (21) away from the outer ring ejector channel (2011) and surrounds the first base (21) to form the air cavity (23). The air supply fan (1) is installed on the second base (22). The first base (21) is connected to the damper plate (300).

8. The combustion device according to any one of claims 3-5, characterized in that, The damper plate (300) is provided with a mounting boss (302) protruding in the direction away from the outer ring ejection channel (2011). There are two mounting bosses (302) spaced apart in the lateral direction. The portion of the outer ring nozzle (400) extending radially along the outer ring ejection channel (2011) passes through one of the mounting bosses (302). The fan base (2) has mounting arms (212) extending on both sides toward the damper plate (300). The two mounting arms (212) are detachably connected to the two mounting bosses (302) respectively.

9. The combustion device according to any one of claims 1-5, characterized in that, The air supply module includes an air supply fan (1) for supplying air to the outer ring ejector channel (2011), and the rotation speed of the air supply fan (1) can be adjusted according to the amount of gas in the outer ring ejector channel (2011).

10. A stove, characterized in that, Includes the combustion device as described in any one of claims 1-9.

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