Composite electrodes, electric flame stove burner head and electric flame stove

Abstract

This utility model discloses a composite electrode, an electric flame stove burner head, and an electric flame stove. The composite electrode includes a conductive post, an electrode needle, and an electrode cap arranged sequentially from bottom to top. The electrode needle is cylindrical, with its lower end connected to the upper end of the conductive post. The electrode cap is detachably fixed to the top of the electrode needle. The conductive post is made of copper, the electrode needle is made of 310S or 314 stainless steel, and the electrode cap is made of high-temperature resistant ceramic. Effects: The conductive post is made of copper, giving it excellent conductivity. This allows for easy transmission of high voltage along the shorter electrode needle to the electrode cap, significantly improving the heat transfer intensity of the plasma. The electrode needle, made of 310S or 314 stainless steel, is resistant to high temperatures, corrosion, and oxidation, resulting in a long service life. It is not easily oxidized by the high-temperature burning and corrosion of the plasma flame generated at the electrode cap. The electrode cap, made of high-temperature resistant ceramic, has strong high-temperature resistance, allowing it to adapt to extreme high-temperature working environments. Its excellent insulation properties ensure electrical safety. Furthermore, it exhibits good chemical stability, strong corrosion resistance, high mechanical strength, wear resistance, impact resistance, and low thermal conductivity, reducing heat conduction loss and indirectly improving the thermal efficiency of the electric flame stove during use.

Description

Technical Field

[0001] This utility model relates to the field of electric flame stove technology, and in particular to a composite electrode, an electric flame stove burner head, and an electric flame stove. Background Technology

[0002] Air plasma is plasma mediated by air. Under high voltage, discharge between electrode needles can generate air plasma. If a stable high voltage is maintained, the air will continue to ionize, and the ionized air becomes a conductor. The current passing through it causes the air to heat up rapidly and diffuse outward. When the temperature reaches above 800 degrees Celsius, the diffused hot air appears as an open flame. It can be used for metal cutting and electrothermal conversion, which is a very high-intensity electrothermal conversion method. When used in cooktops, it is also called an electric flame cooktop. Compared to rice cookers, microwave ovens, and air fryers, electric flame cooktops have the characteristic of high heat density. They can not only boil, steam, fry, grill, and roast, but also stir-fry. Compared to induction cookers, they have the advantages of no radiation and no dependence on the material of the cookware, making them the future direction of kitchen appliances.

[0003] In the process of air plasma generation, electrode needles are crucial, requiring high temperature resistance, corrosion resistance, and oxidation resistance. Among stainless steels, there is an austenitic high-temperature resistant stainless steel, represented by 310S and 314, which is a very economical choice for electrode needles. However, the electrical conductivity of this stainless steel is not ideal, thus affecting the heat transfer intensity of the plasma.

[0004] In response, the inventor of this patent, drawing on experience, deeply considered the problems encountered in his work, reviewed a large amount of scientific research data and literature, and gradually conceived and designed this application through a novelty search to solve the relevant technical problems. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this utility model is to provide a composite electrode, an electric flame stove burner head, and an electric flame stove.

[0006] To achieve one of the above objectives, the composite electrode according to an embodiment of the present invention includes a conductive post, an electrode needle, and an electrode cap arranged sequentially from bottom to top;

[0007] The electrode needle is cylindrical, with its lower end inserted into the upper end of the conductive post. The electrode cap is detachably fixed to the top of the electrode needle. The conductive post is made of copper, the electrode needle is made of 310S or 314 stainless steel, and the electrode cap is made of high-temperature resistant ceramic.

[0008] In addition, the composite electrode according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the electrode cap is formed into an inverted conical truncated structure, with an insertion hole A opened upward in the middle of its lower bottom surface. The upper end of the electrode needle is inserted into the insertion hole A so as to connect with the electrode cap to form an integral unit.

[0010] According to one embodiment of the present invention, the upper end of the electrode needle is threaded into the insertion hole A, or is glued into the insertion hole A by high-temperature resistant adhesive.

[0011] According to one embodiment of the present invention, a countersunk hole is formed at the center of the upper end face of the electrode cap.

[0012] According to one embodiment of the present invention, the outer diameter of the lower end of the electrode cap is equal to the outer diameter of the electrode needle, and the upper end of the electrode needle is cut to form a pin in its middle part, and the pin is inserted into the insertion hole A with an interference fit.

[0013] According to one embodiment of the present invention, the outer diameter of the conductive post is smaller than the outer diameter of the electrode needle, and an insertion hole B is provided in the middle of the bottom surface of the electrode needle. The upper end of the conductive post is inserted into the insertion hole B so as to connect with the electrode needle to form an integral unit.

[0014] To achieve the second objective mentioned above, the electric flame stove burner head according to an embodiment of the present utility model includes a burner head base plate and multiple composite electrodes as described above;

[0015] The lower ends of the multiple electrode needles protrude outward to form a ring of convex portions. The bottom plate of the burner head is evenly provided with multiple through holes penetrating its upper and lower end faces. The multiple conductive pillars are correspondingly inserted into the multiple through holes. The multiple convex portions are correspondingly located on the upper part of the multiple through holes, so that they are all supported by the upper surface of the bottom plate of the burner head.

[0016] In addition, the composite electrode according to the above embodiments of the present invention may also have the following additional technical features:

[0017] According to one embodiment of the present invention, a top plate of the furnace head is also included, which is mounted above the bottom plate of the furnace head;

[0018] The upper surface of the furnace head top plate is uniformly provided with multiple flame tubes whose bottoms are connected to the lower surface of the furnace head. The multiple flame tubes are located directly above the multiple through holes, and the multiple flame tubes are enclosed by the multiple electrode needles. An air flow channel is formed between the inner wall of the flame tubes and the outer wall of the electrode needles. The upper ends of the multiple electrode caps are exposed on the upper part of the multiple flame tubes.

[0019] According to one embodiment of the present invention, it also includes a furnace surround for supporting the cookware, which is framed outside the upper part of the top plate of the stove head;

[0020] The furnace enclosure is installed on the top plate of the furnace head, and its height is higher than the height of the plurality of electrode caps.

[0021] To achieve the third objective mentioned above, the electric flame stove according to the present utility model includes a housing and an electric flame generating device disposed in the housing, and also includes the electric flame stove burner head mentioned above.

[0022] The upper surface of the housing has an installation port, the electric flame stove burner head is fitted into the installation port, and the multiple conductive posts of the electric flame stove burner head are electrically connected to the electric flame generating device.

[0023] The beneficial effects of this utility model are:

[0024] The composite electrode, electric flame stove burner head, and electric flame stove provided in this application, in specific implementation, have the following advantages: Firstly, because the conductive post is made of copper, it has excellent conductivity, making it easier to transmit high voltage along the shorter electrode needle to the electrode cap, thus improving the heat transfer intensity of the plasma. Secondly, because the electrode needle is made of 310S or 314 stainless steel, it is resistant to high temperatures, corrosion, and oxidation, resulting in a long service life and resistance to oxidation caused by the high-temperature burning corrosion of the plasma electric flame generated at the electrode cap. Furthermore, because the electrode cap is made of high-temperature resistant ceramic material, it has strong high-temperature resistance, can adapt to extreme high-temperature working environments, and its excellent insulation properties ensure electrical safety, effectively preventing the risk of electric shock caused by current leakage or short circuits. It also has good chemical stability, strong corrosion resistance, high mechanical strength, wear resistance, impact resistance, and low thermal conductivity, reducing heat conduction loss and indirectly improving the thermal efficiency of the electric flame stove during use.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the composite electrode of this utility model. Figure 1 ;

[0028] Figure 2This is a breakdown of the composite electrode of this utility model. Figure 1 ;

[0029] Figure 3 This is a schematic diagram of the overall structure of the composite electrode of this utility model. Figure 2 ;

[0030] Figure 4 This is a breakdown of the composite electrode of this utility model. Figure 2 ;

[0031] Figure 5 This is a schematic diagram of the overall structure of the electric flame stove burner head of this utility model;

[0032] Figure 6 This is a longitudinal sectional view of the electric flame stove burner head of this utility model;

[0033] Figure label:

[0034] Composite electrode 1000;

[0035] Conductive post 10;

[0036] Flow channel 101;

[0037] Electrode needle 20;

[0038] Pin 201;

[0039] Socket B202;

[0040] 203 convex portion;

[0041] Electrode cap 30;

[0042] Socket A301;

[0043] Countersunk hole 302;

[0044] Electric flame stove burner head 2000;

[0045] Stove head bottom plate 40;

[0046] The top plate of the furnace head is 50 mm.

[0047] Flamethrower 501;

[0048] Airflow channel 60;

[0049] Furnace circumference 70;

[0050] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0053] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] 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.

[0056] The composite electrode 1000, the electric flame stove burner head 2000, and the electric flame stove of this utility model are described in detail below with reference to the accompanying drawings.

[0057] Example 1

[0058] Reference Figures 1 to 4 As shown;

[0059] The composite electrode 1000 provided according to the embodiment of the present invention includes a conductive post 10, an electrode needle 20 and an electrode cap 30 arranged sequentially from bottom to top.

[0060] The electrode needle 20 is cylindrical, with its lower end inserted into the upper end of the conductive post 10. The electrode cap 30 is detachably fixed to the top of the electrode needle 20. The conductive post 10 is made of copper, the electrode needle 20 is made of 310S or 314 stainless steel, and the electrode cap 30 is made of high-temperature resistant ceramic.

[0061] Based on the above, it is clear that in specific implementation, this application is mainly used as a composite electrode 1000. When applying this application in this embodiment to an electric flame stove, compared with the traditional single stainless steel electrode, this application improves and optimizes it so that it has a conductive post 10 made of copper, an electrode needle 20 made of 310S or 314 stainless steel, and an electrode cap 30 made of high-temperature resistant ceramic material arranged sequentially from bottom to top, so that the composite electrode 1000 is made of three different materials. When the conductive post 10 is electrically connected to the electric flame generating device of the electric flame stove, it is obvious that this application will have the following technical effects:

[0062] On the one hand, since the conductive post 10 is made of copper, it has excellent conductivity, making it easier to transmit high voltage along the shorter electrode needle 20 to the electrode cap 30, thus improving the heat transfer intensity of the plasma. On the other hand, since the electrode needle 20 is made of 310S or 314 stainless steel, it is resistant to high temperatures, corrosion, and oxidation, resulting in a long service life and resistance to oxidation caused by the high temperature of the plasma electric flame generated at the electrode cap 30. Furthermore, since the electrode cap 30 is made of high-temperature resistant ceramic, it has strong high-temperature resistance and can adapt to extreme high-temperature working environments. Its excellent insulation properties also ensure electrical safety, effectively preventing the risk of electric shock caused by current leakage or short circuits. In addition, it has good chemical stability, strong corrosion resistance, high mechanical strength, wear resistance, impact resistance, and low thermal conductivity, which reduces heat conduction loss and indirectly improves the thermal efficiency of the electric flame stove during use.

[0063] Furthermore, through the above-mentioned optimized design, the whole constituted by this application is highly practical and has a good effect in use.

[0064] Furthermore, in a specific implementation, according to one embodiment of the present invention, the electrode cap 30 is formed into an inverted conical truncated structure, with an insertion hole A301 opened upward in the middle of its lower bottom surface. The upper end of the electrode needle 20 is inserted into the insertion hole A301 so as to connect with the electrode cap 30 to form an integral unit.

[0065] Therefore, it can be clearly understood that when the upper end of the electrode needle 20 is inserted into the insertion hole A301 opened upward in the middle of the bottom surface of the electrode cap 30, the electrode cap 30 can be better supported, so that the electrode cap 30 is well fixed.

[0066] Preferably, in this technical solution, according to an embodiment of the present invention, the upper end of the electrode needle 20 is threaded into the insertion hole A301, or is glued into the insertion hole A301 by high-temperature resistant adhesive.

[0067] This makes the electrode cap 30 more securely fixed, less likely to loosen or fall off, and thus more stable in use.

[0068] Furthermore, in a specific implementation, according to one embodiment of the present invention, a countersunk hole 302 is provided downward in the middle of the upper end face of the electrode cap 30.

[0069] In this regard, it is clear that, on the one hand, because the electrode cap 30 is formed into an inverted conical truncated structure, when a plasma electric flame is generated around it, a negative pressure zone is formed in the area where its upper end face is located, so that the plasma electric flame can be gathered towards the area where its upper end face is located to form an upward burning flame. On the other hand, when the countersunk hole 302 is opened downward in the middle of the upper end face of the electrode cap 30, a negative pressure zone can be better formed in the area where the upper end face of the electrode cap 30 is located, so that the flame can be better gathered, which can better play the role of stabilizing the high-pressure airflow and achieve the effect of stabilizing the plasma electric flame.

[0070] Furthermore, through the above-mentioned optimized design, the overall performance of this application can be effectively improved.

[0071] Furthermore, in this technical solution, according to one embodiment of the present utility model, the outer diameter of the lower end of the electrode cap 30 is equal to the outer diameter of the electrode needle 20, so that its insertion part can be smoothly transitioned to facilitate the smooth passage of airflow. The upper end of the electrode needle 20 is cut so that a pin 201 is formed in its middle part. The pin 201 is inserted into the insertion hole A301 with an interference fit so that the electrode cap 30 can be stably inserted and supported and fixed.

[0072] Furthermore, in a specific implementation, according to one embodiment of the present invention, the outer diameter of the conductive post 10 is smaller than the outer diameter of the electrode needle 20, and the bottom surface of the electrode needle 20 is provided with an insertion hole B202 at the center. The upper end of the conductive post 10 is inserted into the insertion hole B202 so as to connect with the electrode needle 20 to form an integral unit.

[0073] This facilitates the stable insertion and fixation of the electrode needle 20 and the electrode cap 30 inserted thereon.

[0074] In a preferred embodiment, the upper outer wall of the conductive post 10 is cut inward to form a plurality of flow grooves 101, and the lower ends of the plurality of flow grooves 101 are exposed outside the lower end of the electrode needle 20.

[0075] Thus, on the one hand, the solder introduced through the multiple flow channels 101 stabilizes the electrode pin 20 and the conductive post 10, making it less likely for the electrode pin 20 and the conductive post 10 to come loose when they are connected as one unit, resulting in strong fixation between them and increasing the conductivity of the electrode pin 20. On the other hand, the solder remaining inside the multiple flow channels 101 is not very hard, so even if expansion stress is generated at the upper end of the conductive post 10, the resulting expansion stress is not likely to cause the upper end of the conductive post 10 to become thicker and larger, because at this time the multiple flow channels 101 can be locally squeezed to form a pressure relief space, so that the lower end of the electrode pin 20 is not likely to be squeezed and broken due to the related expansion stress. Thus, the service life of the electrode pin 20 is longer.

[0076] Example 2

[0077] Reference Figures 5 to 6 As shown;

[0078] Based on Embodiment 1, the electric flame stove burner head 2000 according to this utility model embodiment includes a burner head bottom plate 40 and multiple composite electrodes 1000 as described in Embodiment 1 above.

[0079] Among them, the lower ends of the multiple electrode needles 20 each protrude outward to form a ring of outward protrusions 203. The burner bottom plate 40 is evenly provided with multiple through holes penetrating its upper and lower end faces. The multiple conductive pillars 10 are correspondingly inserted into the multiple through holes. The multiple outward protrusions 203 are correspondingly located on the upper part of the multiple through holes, so that they are all supported by the upper end face of the burner bottom plate 40.

[0080] Thus, by setting the furnace head base plate 40, multiple composite electrodes 1000 can be stably supported.

[0081] Furthermore, in a specific implementation, according to one embodiment of the present invention, this application in this embodiment also includes a furnace head top plate 50 mounted above the furnace head bottom plate 40;

[0082] The upper surface of the furnace head top plate 50 is uniformly provided with a plurality of flame tubes 501 whose bottoms are connected to its lower bottom surface. The plurality of flame tubes 501 are located directly above the plurality of through holes, and the plurality of flame tubes 501 are correspondingly enclosed around the plurality of electrode needles 20. An air flow channel 60 is formed between the inner wall of the flame tubes 501 and the outer wall of the electrode needles 20. The upper ends of the plurality of electrode caps 30 are correspondingly exposed outside the upper part of the plurality of flame tubes 501.

[0083] Meanwhile, in a specific implementation, according to an embodiment of the present utility model, the present application in this embodiment also includes a furnace enclosure 70 framed outside the upper part of the stove top plate 50 for supporting the pot.

[0084] The furnace enclosure 70 is disposed on the top plate 50 of the furnace head, and its height is higher than that of the plurality of electrode caps 30.

[0085] In this regard, it is clear that the burner bottom plate 40, burner top plate 50 and the furnace enclosure 70 described in this embodiment are all common structures in the prior art. When the electric flame stove burner 2000 described in this application includes the burner bottom plate 40, burner top plate 50 and furnace enclosure 70, and also includes the composite electrode 1000, when they are assembled together, they constitute a brand new electric flame stove burner 2000. Its usage effect is exactly the same as that of this application in Embodiment 1, and will not be repeated here.

[0086] Example 3

[0087] To achieve the third objective mentioned above, the electric flame stove according to the embodiment of this utility model includes a housing and an electric flame generating device disposed in the housing, and also includes the electric flame stove burner 2000 mentioned above.

[0088] The upper surface of the housing has an installation port, the electric flame stove burner head 2000 is fitted into the installation port, and the multiple conductive posts 10 of the electric flame stove burner head 2000 are electrically connected to the electric flame generating device.

[0089] It is also clear that the housing and the electric flame generating device described in this embodiment are common structures in the prior art. When the electric flame stove described in this application includes the housing and the electric flame generating device, it also includes a corresponding electric flame stove burner 2000 with the composite electrode 1000. When they are assembled together, they constitute a brand new electric flame stove. Its usage effect is exactly the same as that of this application in Embodiment 1 and Embodiment 2, and will not be repeated here.

[0090] Other embodiments, etc., will not be described here.

[0091] In summary, the composite electrode 1000, electric flame stove burner head 2000, and electric flame stove provided in this application, in specific implementation, have the following advantages: Firstly, because the conductive post 10 is made of copper, it has excellent conductivity, making it easier to transmit high voltage along the shorter electrode needle 20 to the electrode cap 30, thus effectively improving the heat transfer intensity of the plasma. Secondly, because the electrode needle 20 is made of 310S or 314 stainless steel, it is resistant to high temperatures, corrosion, and oxidation, resulting in a long service life. It is not easily oxidized by the high-temperature burning and corrosion of the plasma electric flame generated at the electrode cap 30. Furthermore, since the electrode cap 30 is made of high-temperature resistant ceramic material, it has strong high-temperature resistance and can adapt to extreme high-temperature working environments. Due to its excellent insulation properties, it can also ensure electrical safety and effectively prevent the risk of electric shock caused by current leakage or short circuit. In addition, it has good chemical stability, strong corrosion resistance, high mechanical strength, wear resistance, impact resistance, and low thermal conductivity, which can reduce heat conduction loss and indirectly improve the thermal efficiency of the electric flame stove during use.

[0092] Furthermore, the composite electrode 1000, electric flame stove burner head 2000, and electric flame stove provided in this application are indeed highly practical and have excellent performance, which makes this application inherently valuable for market promotion and will certainly be very popular and effectively popularized.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A composite electrode, characterized by, It includes, from bottom to top, conductive posts, electrode needles, and electrode caps; The electrode needle is cylindrical, with its lower end inserted into the upper end of the conductive post. The electrode cap is detachably fixed to the top of the electrode needle. The conductive post is made of copper, the electrode needle is made of 310S or 314 stainless steel, and the electrode cap is made of high-temperature resistant ceramic.

2. The composite electrode according to claim 1, wherein The electrode cap is formed into an inverted conical truncated structure, with an insertion hole A opened in the middle of its lower bottom surface. The upper end of the electrode needle is inserted into the insertion hole A so as to connect with the electrode cap to form an integral unit.

3. The composite electrode of claim 2, wherein The upper end of the electrode needle is threaded into the insertion hole A, or it is glued to the insertion hole A with high-temperature resistant adhesive.

4. The composite electrode according to claim 2, characterized in that, A countersunk hole is formed at the center of the upper end face of the electrode cap.

5. The composite electrode of claim 2, wherein The outer diameter of the lower end of the electrode cap is equal to the outer diameter of the electrode needle. The upper end of the electrode needle is cut to form a pin in its middle part. The pin is inserted into the insertion hole A with an interference fit.

6. The composite electrode of claim 1, wherein The outer diameter of the conductive post is smaller than the outer diameter of the electrode needle. The bottom surface of the electrode needle has an upward-facing insertion hole B. The upper end of the conductive post is inserted into the insertion hole B so as to connect with the electrode needle to form an integral unit.

7. An electric flame burner characterized by Includes a furnace head base plate and multiple composite electrodes as described in any one of claims 1-6; The lower ends of the multiple electrode needles protrude outward to form a ring of convex portions. The bottom plate of the burner head is evenly provided with multiple through holes penetrating its upper and lower end faces. The multiple conductive pillars are correspondingly inserted into the multiple through holes. The multiple convex portions are correspondingly located on the upper part of the multiple through holes, so that they are all supported by the upper surface of the bottom plate of the burner head.

8. The electric burner according to claim 7, characterized in that It also includes the furnace head top plate mounted above the furnace head bottom plate; The upper surface of the furnace head top plate is uniformly provided with multiple flame tubes whose bottoms are connected to the lower surface of the furnace head. The multiple flame tubes are located directly above the multiple through holes, and the multiple flame tubes are enclosed by the multiple electrode needles. An air flow channel is formed between the inner wall of the flame tubes and the outer wall of the electrode needles. The upper ends of the multiple electrode caps are exposed on the upper part of the multiple flame tubes.

9. The electric burner of claim 8, wherein It also includes a furnace surround framed outside the upper part of the top plate of the stove head for supporting the cookware; The furnace enclosure is installed on the top plate of the furnace head, and its height is higher than the height of the plurality of electrode caps.

10. An electric flame, comprising a housing and an electric flame generating device provided in the housing, characterized in that, It also includes the electric flame stove head as described in claim 9; The upper surface of the housing has an installation port, the electric flame stove burner head is fitted into the installation port, and the multiple conductive posts of the electric flame stove burner head are electrically connected to the electric flame generating device.

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