A burner base and a burner

Abstract

The utility model belongs to the combustion technical field, specifically discloses a kind of furnace base and combustor of combustor.The furnace base has central gas passage and outer ring gas passage, the outer ring gas passage has one outer ring gas inlet and two outer ring gas outlets, the outer ring gas passage includes first gas passage and second gas passage that are horizontally connected at an angle, the first gas passage is communicated with the outer ring gas inlet and one outer ring gas outlet at the end away from the second gas passage, the second gas passage is communicated with another outer ring gas outlet, and the cross-sectional area of the first gas passage is greater than that of the second gas passage.The utility model can improve the uniformity of the outer ring gas cavity, thereby improving the uniformity of the outer ring gas cover, and improving the stability of the outer ring flame.

Description

Technical Field

[0001] This utility model relates to the field of combustion technology, and in particular to a burner base and burner. Background Technology

[0002] The burner heats cooking appliances by burning gas and is the core component of a gas stove. The combustion performance of the burner directly affects the performance of the gas stove.

[0003] The existing top-intake burner includes a burner head, a flame distributor, and a burner cap assembly arranged sequentially from bottom to top. The burner head has a central air intake channel and an outer ring air intake channel. A central gas nozzle connected to the central air intake channel and an outer ring gas nozzle connected to the outer ring air intake channel are installed at the top of the burner head. A central ejector tube and an outer ring ejector tube are installed at the bottom of the flame distributor seat. A central flame distribution chamber and an outer ring flame distribution chamber surrounding the central flame distribution chamber are located at the upper end of the flame distributor seat. The inlet end of the central ejector tube faces the central gas nozzle and its outlet end connects to the central flame distribution chamber. The inlet end of the outer ring ejector tube faces the outer ring gas nozzle and its outlet end connects to the outer ring flame distribution chamber. The burner cap assembly includes a central burner cap and an outer ring burner cap spaced apart. The flame holes on the central burner cap connect to the central flame distribution chamber, and the flame holes on the outer ring burner cap connect to the outer ring flame distribution chamber.

[0004] Existing top-intake burners feature an annular outer gas distribution chamber with a vent at the bottom of a portion of the chamber that connects to the outer ring injector. When the gas-air mixture enters the outer ring gas distribution chamber through this vent, some of the mixture spreads circumferentially to other parts of the chamber. However, this design results in a high gas content at the vent and a low gas content further away, leading to a noticeable uneven distribution of gas content circumferentially within the outer ring gas distribution chamber. This, in turn, causes significant differences in flame size among the multiple outer ring burner holes, affecting the uniformity of heating the cooking appliance and ultimately impacting the cooking experience. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a burner base that can effectively solve the problem of uneven gas supply to the outer ring flame cover of the existing burner base, and improve the uniformity of gas supply and combustion stability.

[0006] The second technical problem solved by this utility model is to provide a burner that can effectively solve the problem of uneven combustion in the circumferential direction of the outer ring flame cap of existing burners, and improve flame uniformity and combustion stability.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A burner base has a central gas passage and an outer ring gas passage. The outer ring gas passage has an outer ring gas inlet and two outer ring gas outlets. The outer ring gas passage includes a first gas passage and a second gas passage that are horizontally connected at an angle. The end of the first gas passage away from the second gas passage is connected to the outer ring gas inlet and one of the outer ring gas outlets. The second gas passage is connected to the other outer ring gas outlet. The cross-sectional area of ​​the first gas passage is larger than the cross-sectional area of ​​the second gas passage.

[0009] Compared with the prior art, the burner base of this utility model has the following advantages: by setting two outer ring gas outlets, the gas distribution assembly installed on the burner base can have two gas inlet positions, and the two gas inlet positions can be spaced apart in the circumference of the outer ring gas distribution chamber, thereby improving the uniformity of the gas in the outer ring gas distribution chamber in the circumferential direction, thus improving the flame uniformity and flame stability at the outer ring burner holes; since the outer ring gas channel includes a first gas channel and a second gas channel connected at an angle, and the cross-sectional area of ​​the second gas channel is smaller than that of the first gas channel, the gas flows from the first... When the gas flows from the first gas passage to the second gas passage, the pressure difference caused by the difference in cross-sectional area between the first and second gas passages can compensate for the pressure drop caused by some gas flowing out through the first outlet in the first gas passage. This makes the gas flow pressure in the first and second gas passages tend to be the same, which helps to ensure that the gas outlet pressure at the first and second outlets tends to be the same. This ensures that the injection pressure of the two outer ring injection channels is approximately the same, thereby improving the circumferential uniformity of the gas in the outer ring gas distribution chamber, improving the flame uniformity at the outer ring burner cap, and improving the combustion performance of the burner.

[0010] In one embodiment, the cross-sectional area of ​​the first gas passage is S1, and the cross-sectional area of ​​the second gas passage is S2, where 1.2 ≤ S1 : S2 ≤ 1.7;

[0011] And / or, the extension direction of the first gas passage is perpendicular to the extension direction of the second gas passage.

[0012] In one embodiment, both the first gas passage and the second gas passage are cylindrical passages, with the diameter of the first gas passage being D1 and the diameter of the second gas passage being D2.

[0013] 1.1≤D1:D2≤1.3, or, 8mm≤D1≤9mm, 6.5mm≤D2≤7.8mm.

[0014] In one embodiment, the furnace base has a support plate portion, the outer ring gas outlet is located above the support plate portion, and the first gas passage and the second gas passage are both located below the support plate portion and are horizontally arranged;

[0015] The two outer ring gas outlets are respectively connected to the corresponding first gas channel or second gas channel through vertically extending outer ring gas outlet channels. The two outer ring gas outlets have the same diameter, the two outer ring gas outlet channels have the same cross-sectional area, and the cross-sectional area of ​​the outer ring gas outlet channel is smaller than that of the second gas channel.

[0016] In one embodiment, the furnace base has a horizontally arranged support plate portion, and two outer ring nozzle seats are protruding from the upper end of the support plate portion. The two outer ring gas outlets are correspondingly arranged on the two outer ring nozzle seats.

[0017] A horizontal outer ring vent pipe is provided at intervals below the support plate. The first gas passage and the second gas passage are both provided in the outer ring vent pipe. One end of the outer ring vent pipe forms the outer ring gas inlet.

[0018] A connecting portion is provided between the support plate portion and the outer ring vent pipe portion. The connecting portion is provided in a one-to-one correspondence with the outer ring nozzle seat. The outer ring gas passage also includes an outer ring gas outlet passage extending upward from the lower end of the connecting portion to the outer ring nozzle seat. The outer ring gas outlet passage connects the outer ring gas outlet with the corresponding first gas passage or second gas passage.

[0019] In one embodiment, the furnace base is provided with a set of mounting holes, which includes a first mounting hole for mounting an ignition needle and a second mounting hole for mounting a thermocouple. The set of mounting holes is provided with two holes spaced apart along the extension direction of the center line of the outer ring gas outlet.

[0020] The second technical problem mentioned above is solved by the following technical solution:

[0021] A burner includes a central flame cap and an outer ring flame cap spaced apart internally and externally, comprising:

[0022] The furnace base as shown above;

[0023] A central gas nozzle is installed on the furnace base and communicates with the central gas passage;

[0024] Two outer ring gas nozzles are installed one-to-one at the two outer ring gas outlets;

[0025] A gas distribution assembly is installed on the furnace base. The lower side of the gas distribution assembly has a central injection channel and two parallel outer ring injection channels with their opening ends facing away from each other. The upper end of the gas distribution assembly has a central gas distribution chamber and an outer ring gas distribution chamber arranged at intervals around the central gas distribution chamber. The bottom of the two outer ring gas distribution chambers on opposite sides is provided with an outer ring vent.

[0026] The air inlet of the central ejector channel is directly connected to the central gas nozzle and the air outlet is connected to the central gas distribution chamber. The air inlets of the two outer ring ejector channels are directly connected to the two outer ring gas nozzles and the air outlets are respectively connected to the two outer ring vents. The central gas distribution chamber is used to supply gas to the central burner cap, and the outer ring gas distribution chamber is used to supply gas to the outer ring burner cap.

[0027] Compared with the prior art, the burner of this utility model has the following advantages: by adopting the above-mentioned furnace base, it is beneficial to achieve approximately the same injection pressure in the two outer ring injection channels, thereby improving the uniformity of the gas in the outer ring gas distribution chamber in the circumferential direction, improving the gas distribution effect, and thus improving the combustion uniformity of the outer ring burner in the circumferential direction.

[0028] In one embodiment, the gas distribution assembly has two outer ring air inlet chambers, which are directly connected to two outer ring air vents. An outer ring ejector connection port is provided on the opposite side wall of the two outer ring air inlet chambers, and the outlet end of the outer ring ejector channel is connected to the corresponding outer ring ejector connection port.

[0029] The bottom of the outer ring air intake chamber gradually rises away from the outer ring ejector port; and / or, the two outer ring air intake chambers and the two outer ring air inlets are symmetrically arranged relative to the center line of the outer ring air distribution chamber.

[0030] In one embodiment, the gas distribution assembly includes:

[0031] The base has a central air intake chamber and two outer ring air intake chambers;

[0032] A central ejector tube, the inner cavity of which forms the central ejector channel and the outlet end is installed on the base, the outlet end of the central ejector channel being connected to the central air inlet chamber;

[0033] Two outer ring ejector tubes, the outlet end of the outer ring ejector tubes is installed on the base and the inner cavity forms the outer ring ejector channel;

[0034] The air distribution seat is detachably installed on the base and has the central air distribution chamber and the outer ring air distribution chamber.

[0035] In one embodiment, the bottom of the air distribution component is recessed downward to form an outer ring air intake, and the recessed space of the outer ring air intake forms the outer ring air intake cavity. The outer ring air intake and the outer ring air intake cavity are arranged in a one-to-one correspondence.

[0036] The bottom of the outer ring air inlet and the upper end of the furnace base are provided with a positioning groove and a positioning protrusion, respectively, and the positioning protrusion is inserted into the positioning groove. Attached Figure Description

[0037] Figure 1 A schematic diagram of the burner provided in an embodiment of this utility model;

[0038] Figure 2 This is a schematic diagram of the disassembled structure of the burner provided in an embodiment of the present utility model;

[0039] Figure 3 A schematic diagram of the furnace base provided in an embodiment of this utility model from one perspective;

[0040] Figure 4 A cross-sectional view of the furnace base provided in an embodiment of this utility model;

[0041] Figure 5 A schematic diagram of the furnace base provided in an embodiment of this utility model from another perspective;

[0042] Figure 6 This is a schematic diagram of the gas distribution component provided in an embodiment of the present invention from one perspective;

[0043] Figure 7 A schematic diagram of the gas distribution component provided in an embodiment of this utility model from another perspective;

[0044] Figure 8 A schematic diagram of the disassembled structure of the gas distribution component provided in an embodiment of this utility model;

[0045] Figure 9 A schematic diagram of the structure of the base provided in an embodiment of this utility model;

[0046] Figure 10 This is a schematic diagram of the structure of the gas distribution seat provided in an embodiment of the present utility model from one perspective;

[0047] Figure 11 This is a schematic diagram of the gas distribution seat provided in an embodiment of the present utility model from another perspective.

[0048] Label Explanation:

[0049] 1. Furnace base; 11. Support plate section; 12. Outer ring nozzle seat; 121. Outer ring gas outlet; 121a. First gas outlet; 121b. Second gas outlet; 13. Central nozzle seat; 131. Central gas outlet; 14. Outer ring channel section; 141. Outer ring vent pipe section; 1411. First pipe section; 1412. Second pipe section; 142. Connecting section; 143. Outer ring gas passage; 1431. First gas passage; 1432. Second gas passage; 14 33. Outer ring air outlet channel; 15. Central channel section; 151. Central gas channel; 16. First support leg; 17. Second support leg; 18. Positioning ring section; 181. Positioning groove; 19. Mounting hole group; 191. First mounting hole; 192. Second mounting hole; 193. First fastening hole; 194. Second fastening hole; 110. First boss section; 120. Second boss section; 130. First reinforcing rib; 140. Second reinforcing rib; 150. Connecting part;

[0050] 2. Air distribution assembly; 21. Ejector tube; 21a. Central ejector tube; 21a1. Central ejector channel; 21b. Outer ring ejector tube; 21b1. Outer ring ejector channel; 22. Base; 221. Mounting plate; 222. Outer ring air inlet; 2221. Outer ring air inlet chamber; 2222. Outer ring ejector connection port; 223. Central air inlet; 2231. Central air inlet chamber; 2232. Central 224. Ejector connection port; 23. Positioning protrusion; 23. Gas distribution seat; 231. Central ring; 2311. Central gas distribution chamber; 232. Inner wall of outer ring; 233. Outer wall of outer ring; 234. Bottom of outer ring; 2341. Base plate; 2342. Flanged edge; 235. Outer ring gas distribution chamber; 236. Outer ring vent; 237. Connecting plate; 238. Cover plate; 239. Positioning edge;

[0051] 3. Outer ring gas nozzle; 4. Center gas nozzle;

[0052] 5. Outer ring flame cap; 51. Outer ring flame hole; 6. Center flame cap; 61. Center flame hole. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] This embodiment provides a burner that can be applied to a gas stove to heat the cooking appliance and cook food by igniting and burning gas.

[0058] like Figures 1 to 4As shown, the burner includes a furnace base 1, a gas distribution assembly 2, a central gas nozzle 4, an outer ring gas nozzle 3, and a burner cap assembly. The furnace base 1 has a central gas passage 151 and an outer ring gas passage 143. The central gas passage 151 has a central gas inlet located at the lower part of the furnace base 1 and a central gas outlet 131 located at the upper end of the furnace base 1. The outer ring gas passage 143 has an outer ring gas inlet located at the lower part of the furnace base 1 and an outer ring gas outlet 121 located at the upper end of the furnace base 1. The outer ring gas nozzle 3 is installed at the outer ring gas outlet 121, and the central gas nozzle 4 is installed at the central gas outlet 131. The lower part of the gas distribution assembly 2 is provided with an outer ring ejector channel 21b1 and a central ejector channel 21a1. The upper part of the gas distribution assembly 2 is provided with a central gas distribution chamber 2311 and an outer ring gas distribution chamber 235 arranged around the central gas distribution chamber 2311 at intervals. The air inlet end of the central ejector channel 21a1 is directly opposite the central gas nozzle 4, and the air outlet end is connected to the central gas distribution chamber 2311. The air inlet end of the outer ring ejector channel 21b1 is directly opposite the outer ring gas nozzle 3, and the air outlet end is connected to the outer ring gas distribution chamber 235. The burner assembly includes a central burner 6 and an outer ring burner 5 installed on the upper part of the gas distribution assembly 2. The central burner 6 has a central gas chamber and a central flame hole 61 connected to the central gas chamber. The central gas chamber is directly opposite and connected to the central gas distribution chamber 2311. The outer ring burner 5 has a connected outer ring gas chamber and an outer ring flame hole 51. The outer ring gas chamber is connected to the outer ring gas distribution chamber 235.

[0059] That is, the central gas passage 151, the central ejector passage 21a1, the central gas distribution chamber 2311, the central gas chamber and the central burner hole 61 are connected in sequence to supply gas to the central burner hole 61 of the central burner cap 6; the outer ring gas passage 143, the outer ring ejector passage 21b1, the outer ring gas distribution chamber 235, the outer ring gas chamber and the outer ring burner hole 51 are connected in sequence to supply gas to the outer ring burner hole 51 of the outer ring burner cap 5.

[0060] In this embodiment, there are two outer ring gas outlets 121, namely a first gas outlet 121a and a second gas outlet 121b, which are located on opposite sides of the gas distribution component 2. The outer ring gas passage 143 includes a first gas passage 1431 and a second gas passage 1432 connected at an angle. The end of the first gas passage 1431 away from the second gas passage 1432 is connected to the outer ring gas inlet and the first gas outlet 121a. The second gas passage 1432 is connected to the second gas outlet 121b. The cross-sectional area of ​​the first gas passage 1431 is larger than the cross-sectional area of ​​the second gas passage 1432.

[0061] There are two outer ring gas nozzles 3 and two outer ring ejector channels 21b1. The two outer ring gas nozzles 3 are arranged one-to-one with the two outer ring gas outlets 121. The two outer ring ejector channels 21b1 are arranged in parallel and spaced apart, and are arranged one-to-one with the two outer ring gas nozzles 3.

[0062] The furnace base 1 and burner provided in this embodiment, by setting two outer ring gas outlets 121, two outer ring gas nozzles 3, and two outer ring ejector channels 21b1, enable the outer ring gas distribution chamber 235 to have two gas inlet positions, and the two gas inlet positions can be spaced apart in the circumference of the outer ring gas distribution chamber 235, thereby improving the uniformity of the gas in the outer ring gas distribution chamber 235 in the circumferential direction, thereby improving the flame uniformity and flame stability at the outer ring flame hole 51; since the outer ring gas channel 143 includes a first gas channel 1431 and a second gas channel 1432 connected at an angle, and the cross-sectional area of ​​the second gas channel 1432 is smaller than the cross-sectional area of ​​the first gas channel 1431, the gas flows from the first gas channel 1431... When the gas flows to the second gas passage 1432, the pressure difference caused by the difference in cross-sectional area between the first gas passage 1431 and the second gas passage 1432 can compensate for the pressure drop caused by some gas flowing out of the first gas outlet 121a in the first gas passage 1431. This makes the gas flow pressure in the first gas passage 1431 and the second gas passage 1432 tend to be the same, which helps to ensure that the gas outlet pressure of the first gas outlet 121a and the second gas outlet 121b tends to be the same. This ensures that the injection pressure of the two outer ring injection channels 21b1 is approximately the same, thereby improving the circumferential uniformity of the gas in the outer ring gas distribution chamber 235, improving the flame uniformity at the outer ring burner cap 5, and improving the combustion performance of the burner.

[0063] It is worth noting that, in one embodiment, multiple central flame holes 61 are spaced apart along the circumference of the central flame cap 6, and multiple outer ring flame holes 51 are spaced apart along the circumference of the outer ring flame cap 5. In other embodiments, the central flame holes 61 and / or the outer ring flame holes 51 are annular flame holes. The specific structures of the central flame cap 6 and the outer ring flame cap 5, as well as their installation structures on the gas distributor 23, can be set with reference to existing technology, which is not the focus of this utility model and will not be described in detail here.

[0064] In one embodiment, the cross-sectional area of ​​the first gas passage 1431 is S1, and the cross-sectional area of ​​the second gas passage (1432) is S2, where 1.2 ≤ S1 : S2 ≤ 1.7. This ratio setting is beneficial for achieving pressure balance between the first gas passage 1431 and the second gas passage 1432.

[0065] In one embodiment, both the first gas passage 1431 and the second gas passage 1432 are cylindrical channels, which facilitates the processing of the first gas passage 1431 and the second gas passage 1432, that is, facilitates the processing of the outer ring gas passage 143. The diameter of the first gas passage 1431 is larger than the diameter of the second gas passage 1432, thereby facilitating the control of the ratio of the cross-sectional area of ​​the first gas passage 1431 to the cross-sectional area of ​​the second gas passage 1432.

[0066] In one embodiment, the diameter of the first gas passage 1431 is D1, and the diameter of the second gas passage 1432 is D2, where 1.1 ≤ D1 : D2 ≤ 1.3. Further, 8 mm ≤ D1 ≤ 9 mm, and 6.5 mm ≤ D2 ≤ 7.8 mm.

[0067] In one embodiment, the furnace base 1 has a support plate portion 11, an outer ring gas outlet 121 is located above the support plate portion 11, and a first gas passage 1431 and a second gas passage 1432 are both located below the support plate portion 11 and are horizontally arranged; the two outer ring gas outlets 121 are respectively connected to the corresponding first gas passage 1431 or second gas passage 1432 through a vertically extending outer ring gas outlet passage 1433, the two outer ring gas outlets 121 have the same diameter, the two outer ring gas outlet passages 1433 have the same cross-sectional area, and the cross-sectional area of ​​the outer ring gas outlet passage 1433 is smaller than the cross-sectional area of ​​the second gas passage 1432.

[0068] The above configuration is more conducive to ensuring that the gas pressure of the first gas outlet 121a and the second gas outlet 121b is the same, avoiding the influence of the size of the two outer ring gas outlet channels 1433 on the gas pressure in the first gas channel 1431 and the second gas channel 1432, and facilitating the processing of the outer ring gas channel 143. At the same time, since the cross-sectional area of ​​the two outer ring gas outlet channels 1433 is the same, the size of the first gas outlet 121a and the second gas outlet 121b can be the same, thereby allowing the two outer ring gas nozzles 3 to adopt the same structure, reducing the cost of the burner.

[0069] In another embodiment, the cross-sectional area of ​​the outer ring gas outlet channel 1433 connected to the first gas passage 1431 may be the same as the cross-sectional area of ​​the first gas passage 1431, and the cross-sectional area of ​​the outer ring gas outlet channel 1433 connected to the second gas passage 1432 may be the same as the cross-sectional area of ​​the second gas passage 1432.

[0070] The first gas passage 1431 and the second gas passage 1432 are both connected at opposite ends to facilitate their processing. A first plug is provided at the end of the second gas passage 1432 away from the first gas passage 1431 to seal the port of the second gas passage 1432 and prevent gas leakage.

[0071] like Figures 3 to 5As shown, a central nozzle seat 13 and two outer ring nozzle seats 12 are provided on the upper side of the support plate portion 11, and two outer ring gas outlets 121 are correspondingly provided on the two outer ring nozzle seats 12. An outer ring channel portion 14 and a central channel portion 15 are provided below the support plate portion 11. The central channel portion 15 is L-shaped, with one end of its horizontal portion forming a central gas inlet, and its vertical portion facing the central nozzle seat 13 and connected to the support plate portion 11 at its upper end. The central gas channel 151 extends along the central channel portion 15 to the central nozzle seat 13.

[0072] The outer ring channel section 14 includes an outer ring vent pipe section 141 spaced below the support plate section 11. The first gas passage 1431 and the second gas passage 1432 are both disposed in the outer ring vent pipe section 141, and one end of the outer ring vent pipe section 141 forms an outer ring gas inlet. The outer ring channel section 14 also includes a connecting section 142 connecting the support plate section 11 and the outer ring vent pipe section 141. The connecting section 142 is disposed in a one-to-one correspondence with the outer ring nozzle seat 12. The outer ring gas passage 143 also includes an outer ring gas outlet passage 1433 extending upward from the lower end of the connecting section 142 to the outer ring nozzle seat 12. The outer ring gas outlet passage 1433 connects the outer ring gas outlet 121 with the corresponding first gas passage 1431 or second gas passage 1432.

[0073] By providing the support plate 11, it is easier to install the gas distribution assembly 2 on the furnace base 1, thereby improving the stability and reliability of the furnace base 1 in supporting the gas distribution assembly 2. By providing the outer ring nozzle seat 12 and the center nozzle seat 13, it is easier to install the outer ring gas nozzle 3 and the center gas nozzle 4 on the furnace base 1, thereby improving the ease of burner assembly. By providing the outer ring channel 14 and the center channel 15 below the support plate 11, it is easier to process the outer ring gas channel 143 and the center gas channel 151, and it simplifies the overall structure of the furnace base 1.

[0074] The outer ring channel section 14 and the support plate section 11 are spaced apart, which facilitates setting the height of the outer ring gas inlet while keeping the height of the support plate section 11 constant, thereby improving the connection convenience between the outer ring gas inlet of the outer ring gas channel 143 and the gas supply pipeline. The connecting section 142 serves to connect the support plate section 11 and the outer ring channel section 14, ensuring the stability of the outer ring channel section 14. Furthermore, a connecting section 150 is also provided between the outer ring channel section 14 and the support plate section 11 to further ensure the stability and reliability of the outer ring channel section 14.

[0075] The outer ring channel section 14 includes a first pipe section 1411 and a second pipe section 1412 connected at an included angle. The inner cavity of the first pipe section 1411 forms a first gas passage 1431, and the inner cavity of the second pipe section 1412 forms a second gas passage 1432. The connecting part 150 is preferably provided at the connection between the first pipe section 1411 and the second pipe section 1412, so as to reduce the number of connecting parts 150 and simplify the structure of the furnace base 1 while ensuring the stability of the outer ring channel section 14.

[0076] In one embodiment, a machining port is provided on the lower side of the outer ring channel 14 directly facing the outer ring gas outlet channel 1433. The machining port facilitates the machining of the outer ring gas outlet channel 1433 and improves the machining convenience of the outer ring gas channel 1433. A second plug is detachably provided at the machining port to seal the machining port.

[0077] In one embodiment, the support plate portion 11 is generally a rectangular plate structure. The extending direction of the first pipe portion 1411 is perpendicular to the extending direction of the second pipe portion 1412. The first pipe portion 1411 is located on one side of the support plate portion 11 and extends along the length direction of that side. The second pipe portion 1412 is located below the other side of the support plate portion 11 and extends along the length direction of that side. Two outer ring nozzle seats 12 are disposed at opposite corners of the support plate portion 11, so that the two outer ring nozzle seats 12 can be located on opposite sides of the air distribution assembly 2, respectively.

[0078] like Figure 5 As shown, to improve the ease of installation of the burner base 1 on the base 22 of the gas stove, a first support leg 16 is connected to the support plate portion 11. The first support leg 16 is L-shaped and has a horizontally extending first fixing portion at its lower end. A second support leg 17 is connected to the outer ring channel portion 14. The second support leg 17 includes a horizontally extending second fixing portion. The first fixing portion and the second fixing portion are coplanar. Thus, through the cooperation of the first support leg 16 and the second support leg 17, the burner base 1 can be installed on the bottom shell of the gas stove, while also ensuring the overall structural stability and reliability of the outer ring channel portion 14.

[0079] Furthermore, at least two first support legs 16 are provided at intervals along the length direction on the side of the support plate portion 11 away from the first tube portion 1411, and at least two second support legs 17 are provided at intervals along the length direction of the first tube portion 1411, so as to improve the installation stability and reliability of the furnace base 1 and avoid interference between the furnace base 1 and other structures on the bottom shell.

[0080] In one embodiment, the furnace base 1 is provided with a mounting hole group 19, which includes a first mounting hole 191 and a second mounting hole 192 spaced apart. The first mounting hole 191 is used to insert an ignition needle, and the second mounting hole 192 is used to insert a thermocouple, so as to realize the installation of the thermocouple and the ignition needle on the furnace base 1. Further, the mounting hole group 19 is provided with at least two spaced apart along the extension direction of the first gas passage 1431 to accommodate gas distribution components 2 of different diameters.

[0081] The furnace base 1 has a preset installation center, and the centerline of the gas distribution assembly 2 passes through this preset installation center. In one embodiment, a first reinforcing rib 130 protrudes from the lower side of the support plate portion 11. The extension direction of the first reinforcing rib 130 is perpendicular to the centerline of the outer ring gas outlet 121, and the first reinforcing rib 130 passes through the preset installation center of the furnace base 1. The orthographic projections of the two outer ring gas outlets 121 on the support plate portion 11 are respectively located on opposite sides of the first reinforcing rib 130. Two mounting hole groups 19 are respectively located on opposite sides of the first reinforcing rib 130, and the spacing between the two first mounting holes 191 and the first reinforcing rib 130 is different.

[0082] By setting the first reinforcing rib 130, the overall structural strength and rigidity of the furnace base 1 can be enhanced, the support performance of the support plate 11 on the gas distribution component 2 and the flame cap component can be improved, and the probability of deformation of the support plate 11 can be reduced, thereby ensuring assembly reliability and stability. At the same time, the extension direction of the first reinforcing rib 130 is perpendicular to the center line of the outer ring gas outlet 121 and passes through the preset installation center, so that the setting of the first reinforcing rib 130 can provide a positioning reference for the processing of the two sets of mounting hole groups 19, ensuring that the distance between the first mounting hole 191 of the two mounting hole groups 19 and the center line of the gas distribution component 2 is different, improving the processing accuracy of the furnace base 1 and enhancing the assembly reliability.

[0083] In one embodiment, a second reinforcing rib 140 protrudes from the lower side of the support plate portion 11. The second reinforcing rib 140 is perpendicular to the first reinforcing rib 130. The first mounting hole 191 and the second mounting hole 192, located in the same mounting hole group 19, are respectively located on opposite sides of the second reinforcing rib 140. The intersection of the first reinforcing rib 130 and the second reinforcing rib 140 is located at a preset mounting center. The provision of the second reinforcing rib 140 can further enhance the overall structural strength and rigidity of the furnace base 1, and can also enhance the specific structural strength and rigidity of the furnace base 1 at the mounting hole, avoiding insufficient local structural strength caused by the opening. Furthermore, the intersection of the second reinforcing rib 140 and the first reinforcing rib 130 can more clearly determine the position of the preset mounting center, which is beneficial to ensuring the installation reliability of the two mounting hole groups 19.

[0084] The two ends of the first reinforcing rib 130 extend to the opposite sides of the support plate portion 11, and the two ends of the second reinforcing rib 140 extend to the opposite sides of the support plate portion 11, so as to improve the convenience of setting the first reinforcing rib 130 and the second reinforcing rib 140, and to enhance the overall structural strength and rigidity of the furnace base 1.

[0085] Furthermore, the first reinforcing rib 130 has two first positioning holes spaced apart, and the second reinforcing rib 140 has two second positioning holes. Both the first and second positioning holes penetrate the support plate portion 11. The two first positioning holes and the two second positioning holes are located on the same circumference with the preset installation center as the center, so as to assist in the processing of the first reinforcing rib 130 and the second reinforcing rib 140 and ensure the correctness of the processing position of the first reinforcing rib 130 and the second reinforcing rib 140.

[0086] The lower side of the support plate 11 has a first boss 110 and a second boss 120 protruding from it. A first mounting hole 191 passes through the first boss 110, and a second mounting hole 192 passes through the second boss 120, thereby increasing the depth of the first mounting hole 191 and the second mounting hole 192, thus improving the installation stability and reliability of the ignition needle and thermocouple on the furnace base 1. The first boss 110 and the second boss 120 are located on opposite sides of the second reinforcing rib 140.

[0087] Mounting hole assembly 19 further includes a first fastening hole 193 near the first mounting hole 191 and a second fastening hole 194 near the second mounting hole 192. A first mounting plate is provided on the ignition needle, and a first fixing hole is provided on the first mounting plate, which is directly opposite the first fastening hole 193. The first mounting plate and the furnace base 1 are connected by a first fastener passing through the first fixing hole and the first fastening hole 193. A second mounting plate is provided on the thermocouple, and a second fixing hole is provided on the second mounting plate, which is directly opposite the second fastening hole 194. The second mounting plate and the furnace base 1 are connected by a second fastener passing through the second fixing hole and the second fastening hole 194. The first fastening hole 193 is a threaded blind hole formed in the first boss portion 110, and the second fastening hole 194 is a threaded blind hole formed in the second boss portion 120.

[0088] In one embodiment, the gas distribution assembly 2 has two outer ring inlet chambers 2221 arranged opposite to each other. The two outer ring inlet chambers 2221 are respectively connected to two outer ring ejector channels 21b1. Thus, the mixed gas ejected by the two outer ring ejector channels 21b1 can be guided through the two outer ring inlet chambers 2221 to enter the outer ring gas distribution chamber 235 through the outer ring vent 236. While allowing the two outer ring vents 236 to be arranged opposite to each other, the positions of the outer ring ejector channels 21b1 and the outer ring inlet chambers 2221 can be flexibly set, improving the convenience of setting the connection structure between the outer ring ejector channels 21b1 and the outer ring gas distribution chamber 235.

[0089] In one embodiment, the two outer ring air inlet chambers 2221 are symmetrically arranged with respect to the center line of the outer ring air distribution chamber 235, and the outer ring air outlet 236 is symmetrically arranged with respect to the center line, which is more conducive to improving the circumferential uniformity of the mixed gas in the outer ring air distribution chamber 235.

[0090] Two outer ring intake chambers 2221 have outer ring ejector ports 2222 on opposite sides of their chamber walls. The outlet of the outer ring ejector channel 21b1 is connected to the corresponding outer ring ejector port 2222. The bottom of the outer ring intake chamber 2221 gradually rises away from the outer ring ejector port 2222, meaning the depth of the outer ring intake chamber 2221 gradually decreases away from the outer ring ejector port 2222. This allows for a sufficient opening area for the outer ring ejector port 2222 while reducing the size of the outer ring intake chamber 2221, thereby improving the structural compactness of the gas distribution assembly 2. Simultaneously, the gradual increase in the bottom of the outer ring intake chamber 2221 away from the outer ring ejector port 2222 also facilitates guiding the airflow within the outer ring intake chamber 2221 towards the outer ring vent 236, ensuring smooth flow of the mixed gas.

[0091] The air distribution assembly 2 also has a central air intake chamber 2231, which is located directly below the central air distribution chamber 2311 and the two are directly connected vertically. A central ejector connection port 2232 is provided on one side wall of the central air intake chamber 2231, and the air outlet of the central ejector channel 21a1 is connected to the central ejector connection port 2232.

[0092] In one embodiment, the bottom of the gas distribution assembly 2 is recessed to form an outer ring air inlet 222, and the recessed space of the outer ring air inlet 222 forms an outer ring air inlet cavity 2221. The outer ring air inlet 222 and the outer ring air inlet cavity 2221 are arranged in a one-to-one correspondence. One of the bottom of the outer ring air inlet 222 and the upper end of the furnace base is provided with a positioning groove 181, and the other is provided with a positioning protrusion 224, which is inserted into the positioning groove 181. This enables the gas distribution assembly 2 to be installed and positioned on the furnace base 1, improves the assembly accuracy, and ensures that the gas nozzle and the corresponding injection channel air inlet end are directly connected.

[0093] In one embodiment, a positioning protrusion 224 protrudes from the bottom of the outer ring air inlet 222, and a positioning groove 181 is provided on the base 1. Specifically, a positioning ring 18 protrudes from the upper end of the support plate 11, and the positioning ring 18 surrounds the positioning groove 181 to enhance the structural strength of the furnace base 1 at the positioning groove 181. The positioning groove 181 can be, but is not limited to, a rectangular groove, a circular groove, or a groove of other shapes. In other embodiments, the positions of the positioning ring and the positioning protrusion can be interchanged.

[0094] In one embodiment, the gas distribution assembly 2 includes a gas distribution seat 23, a base 22, and an ejector tube 21. The gas distribution seat 23 is mounted on the upper side of the base 22 and has a separated central gas distribution chamber 2311 and an outer ring gas distribution chamber 235. The base 22 has an outer ring air intake chamber 2221 and a central air intake chamber 2231. The ejector tube 21 includes a central ejector tube 21a and two outer ring ejector tubes 21b, and is mounted on the bottom of the base 22. The three ejector tubes 21 are arranged parallel and spaced apart, with the central ejector tube 21a located between the two outer ring ejector tubes 21b. The inner cavity of the central ejector tube 21a forms a central ejector channel 21a1, and the inner cavities of the outer ring ejector tubes 21b form outer ring ejector channels 21b1. This configuration facilitates the processing of the gas distribution component 2 and reduces its processing cost. Furthermore, this configuration allows for the adaptation of the outer ring flame cap 5 with different outer diameters by changing the structure of the gas distribution seat 23, while maintaining the original structures of the base 22 and the ejector tube 21, thus improving the versatility of the gas distribution component 2.

[0095] The base 22 includes a mounting plate 221. An outer ring air inlet 222 protrudes from the lower side of the mounting plate 221, and a central air inlet 223 also protrudes from the lower side of the mounting plate 221. The central air inlet 223 has a central air inlet chamber 2231. The outer ring air inlets 222 and outer ring ejector tubes 21b are correspondingly arranged, with the outlet end of the outer ring ejector tube 21b installed in the outer ring air inlet 222, and the outlet end of the central ejector tube 21a installed in the central air inlet 223. The opposing sidewalls of the two outer ring air inlets 222 are parallel and spaced apart, and an outer ring ejector connection port 2222 is opened on the two opposing sidewalls. The outlet end of the outer ring ejector tube 21b is sealed and installed in the outer ring ejector connection port 2222. Further, a positioning protrusion 224 protrudes from the lower side of the outer ring air inlet 222.

[0096] The bottom surface of the outer ring air intake 222 gradually rises from the corresponding outer ring ejector tube 21b to the other outer ring ejector tube 21b. This allows one end of the outer ring air intake 222 to have sufficient matching dimensions with the corresponding outer ring ejector tube 21b, while also providing better avoidance of the other outer ring ejector tube 21b and the central ejector tube 21a. It also increases the extension length of the outer ring air intake 222 to further improve the circumferential uniformity of the outer ring air vent 236.

[0097] like Figures 9 to 11As shown, the air distribution seat 23 includes a central ring portion 231, an inner outer ring wall 232, and an outer outer ring wall 233, which are coaxially arranged from the inside to the outside and spaced apart. The inner cavity of the central ring portion 231 forms a central air chamber. An outer ring bottom 234 connects the inner outer ring wall 232 and the outer outer ring wall 233. The outer ring bottom 234, the inner outer ring wall 232, and the outer outer ring wall 233 together form an outer ring air distribution chamber 235. A connecting plate portion 237 connects the lower end of the central ring portion 231 to the inner outer ring wall 232 or the outer ring bottom 234, so that the air distribution seat 23 forms an integral structure. The outer ring bottom 234 is partially spaced apart from the outer outer ring wall 233 to form an outer ring vent 236.

[0098] In one embodiment, a cover plate 238 extends partially outward from the outer ring outer wall 233. The cover plate 238 is correspondingly disposed with the outer ring air intake chamber 2221, and the cover plate 238 closes the opening of the outer ring air intake chamber 2221 located outside the outer ring outer wall 233. This arrangement allows the outer diameter of the outer ring outer wall 233 to be smaller than the outer diameter of the outer ring air intake chamber 2221.

[0099] To improve assembly reliability, in one embodiment, the cover plate portion 238 and the connecting plate portion 237 are coplanar, and the bottom surfaces of the cover plate portion 238 and the connecting plate portion 237 together form the upper assembly surface. A positioning boss protrudes from the upper surface of the mounting plate portion 221. The shape of the positioning boss is the same as the shape of the upper assembly surface, and the upper assembly surface is fitted onto the positioning boss, thereby achieving the installation and positioning of the air distribution seat 23 on the base 22. Furthermore, the outer periphery of the cover plate portion 238 is an arc edge aligned with the axis of the central ring portion 231, and a positioning edge 239 extends downward from the outer periphery of the cover plate portion 238. The positioning edge 239 fits against the positioning boss to ensure the coaxiality of the air distribution seat 23 and the base 22 after assembly.

[0100] The lower end of the outer ring outer wall 233 is lower than the lower end of the outer ring inner wall 232. The side wall of the outer ring outer wall 233 is provided with an air supply port between the two cover plate portions 238. The air supply port is located on the lower side of the bottom plate portion 2341 and communicates with the space between the outer ring inner wall 232 and the central ring portion 231, thereby facilitating the supply of air to the flame combustion of the central flame cover 6.

[0101] In one embodiment, the bottom 234 of the outer ring includes a base plate portion 2341, and an inner wall 232 of the outer ring is connected to the upper side of the base plate portion 2341. The base plate portion 2341 has two opposing first sides and two opposing second sides. The two first sides are connected to the inner sidewall of the outer ring outer wall 233, and the two second sides are spaced apart from the outer ring outer wall 233 to form an outer ring vent 236. Flanged portions 2342 are connected downwards to the two second sides, and a connecting plate portion 237 is connected between the lower ends of the two flanged portions 2342. This facilitates improved air supply smoothness.

[0102] This embodiment also provides a gas stove, including the burner described above. By using the burner, combustion uniformity can be improved, thereby enhancing the user experience of the gas stove.

[0103] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0104] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A burner base, the burner base having a central gas passage (151) and an outer ring gas passage (143), characterized in that, The outer ring gas passage (143) has an outer ring gas inlet and two outer ring gas outlets (121). The outer ring gas passage (143) includes a first gas passage (1431) and a second gas passage (1432) that are horizontally connected at an angle. The end of the first gas passage (1431) away from the second gas passage (1432) is connected to the outer ring gas inlet and one of the outer ring gas outlets (121). The second gas passage (1432) is connected to the other outer ring gas outlet (121). The cross-sectional area of ​​the first gas passage (1431) is larger than the cross-sectional area of ​​the second gas passage (1432).

2. The furnace base according to claim 1, characterized in that, The cross-sectional area of ​​the first gas passage (1431) is S1, and the cross-sectional area of ​​the second gas passage (1432) is S2, where 1.2≤S1:S2≤1.7; And / or, the extension direction of the first gas passage (1431) is perpendicular to the extension direction of the second gas passage (1432).

3. The furnace base according to claim 1, characterized in that, Both the first gas passage (1431) and the second gas passage (1432) are cylindrical passages. The diameter of the first gas passage (1431) is D1, and the diameter of the second gas passage (1432) is D2. Wherein, 1.1≤D1:D2≤1.3, or 8mm≤D1≤9mm, 6.5mm≤D2≤7.8mm.

4. The furnace base according to claim 1, characterized in that, The furnace base has a support plate (11), the outer ring gas outlet (121) is located above the support plate (11), and the first gas passage (1431) and the second gas passage (1432) are both located below the support plate (11) and are horizontally arranged. The two outer ring gas outlets (121) are respectively connected to the corresponding first gas passage (1431) or second gas passage (1432) through vertically extending outer ring gas outlet channels (1433). The two outer ring gas outlets (121) have the same diameter, the two outer ring gas outlet channels (1433) have the same cross-sectional area, and the cross-sectional area of ​​the outer ring gas outlet channel (1433) is smaller than the cross-sectional area of ​​the second gas passage (1432).

5. The furnace base according to any one of claims 1-4, characterized in that, The furnace base has a horizontally arranged support plate (11), and two outer ring nozzle seats (12) are protruding from the upper end of the support plate (11). The two outer ring gas outlets (121) are arranged one-to-one with the two outer ring nozzle seats (12). A horizontal outer ring vent pipe section (141) is provided at intervals below the support plate section (11). The first gas passage (1431) and the second gas passage (1432) are both provided in the outer ring vent pipe section (141). One end port of the outer ring vent pipe section (141) forms the outer ring gas inlet. A connecting part (142) is connected between the support plate part (11) and the outer ring vent pipe part (141). The connecting part (142) is provided in a one-to-one correspondence with the outer ring nozzle seat (12). The outer ring gas passage (143) also includes an outer ring gas outlet passage (1433) extending upward from the lower end of the connecting part (142) to the outer ring nozzle seat (12). The outer ring gas outlet passage (1433) connects the outer ring gas outlet (121) with the corresponding first gas passage (1431) or second gas passage (1432).

6. The furnace base according to any one of claims 1-4, characterized in that, The furnace base is provided with a set of mounting holes (19), which includes a first mounting hole (191) for mounting an ignition needle and a second mounting hole (192) for mounting a thermocouple. The set of mounting holes (19) is provided in two at intervals along the extension direction of the center line of the outer ring gas outlet (121).

7. A burner comprising a central flame cap (6) and an outer ring flame cap (5) spaced apart from each other, characterized in that, include: The furnace base as described in any one of claims 1-6; A central gas nozzle (4) is installed on the furnace base and connected to the central gas passage (151); Two outer ring gas nozzles (3) are installed one-to-one with the two outer ring gas outlets (121); Gas distribution assembly (2) is installed on the furnace base. The lower side of the gas distribution assembly (2) has a central injection channel (21a1) and two parallel outer ring injection channels (21b1) with their opening ends facing away from each other. The upper end of the gas distribution assembly (2) has a central gas distribution chamber (2311) and an outer ring gas distribution chamber (235) arranged at intervals around the central gas distribution chamber (2311). The bottom of the two outer ring gas distribution chambers (235) on opposite sides is provided with an outer ring vent (236). The air inlet of the central ejector channel (21a1) is directly connected to the central gas nozzle (4) and the air outlet is connected to the central gas distribution chamber. The air inlets of the two outer ring ejector channels (21b1) are directly connected to the two outer ring gas nozzles (3) and the air outlets are connected to the two outer ring vents (236) respectively. The central gas distribution chamber (2311) is used to supply gas to the central burner cap (6), and the outer ring gas distribution chamber (235) is used to supply gas to the outer ring burner cap (5).

8. The burner according to claim 7, characterized in that, The gas distribution assembly (2) has two outer ring air inlet chambers (2221), and the two outer ring air inlet chambers (2221) are directly connected to the two outer ring air vents (236). An outer ring ejector connection port (2222) is opened on the opposite side wall of the two outer ring air inlet chambers (2221). The outlet end of the outer ring ejector channel (21b1) is connected to the corresponding outer ring ejector connection port (2222). The bottom of the outer ring air inlet chamber (2221) gradually rises away from the outer ring ejector port (2222); and / or, the two outer ring air inlets (2221) and the two outer ring air vents (236) are symmetrically arranged with respect to the center line of the outer ring air distribution chamber (235).

9. The burner according to claim 8, characterized in that, The gas distribution component (2) includes: The base (22) has a central air intake chamber (2231) and two outer ring air intake chambers (2221); A central ejector tube (21a) has an inner cavity forming the central ejector channel (21a1) and an outlet end installed on the base (22). The outlet end of the central ejector channel (21a1) is connected to the central air inlet chamber (2231). Two outer ring ejector tubes (21b), the outlet end of the outer ring ejector tubes (21b) is installed on the base (22) and the inner cavity forms the outer ring ejector channel (21b1); The air distribution seat (23) is detachably installed on the base (22) and has the central air distribution chamber (2311) and the outer ring air distribution chamber (235).

10. The burner according to claim 8, characterized in that, The bottom of the air distribution assembly (2) is recessed downward to form an outer ring air inlet (222), and the recessed space of the outer ring air inlet (222) forms the outer ring air inlet cavity (2221). The outer ring air inlet (222) and the outer ring air inlet cavity (2221) are arranged in a one-to-one correspondence. The bottom of the outer ring air inlet (222) and the upper end of the furnace base are provided with a positioning groove (181) and a positioning protrusion (224), respectively, and the positioning protrusion (224) is inserted into the positioning groove (181).

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