High-efficiency furnace end and electric flame stove

Abstract

The utility model discloses a high-efficiency furnace end and an electric flame stove. The high-efficiency furnace end comprises an upper shell, a lower shell and a plurality of anode needles arranged between the upper shell and the lower shell, the upper shell is provided with a plurality of cathode tubes corresponding to the anode needles, and upper ceramic tubes are arranged below the bottoms of the cathode tubes; the lower shell is provided with a plurality of arc striking pieces corresponding to the anode pins, lower ceramic tubes are arranged on the outer sides of the arc striking pieces, and the tops of the lower ceramic tubes abut against the bottoms of the upper ceramic tubes. According to the utility model, the two discharge areas are arranged to form an avalanche effect of secondary ionization, and finally an extremely high temperature plasma jet is formed, so that efficient heat transfer is realized; the cathode tubes, the upper ceramic tubes, the anode needles and the lower ceramic tubes of each group are connected in an abutting manner, and finally, plasma accessories are stabilized by utilizing tightening force between the upper shell and the lower shell, so that the mounting and dismounting efficiency is improved, the complexity of mounting and reworking or overhauling is reduced, and the cost is effectively controlled.

Description

Technical Field

[0001] This utility model specifically relates to an electric flame stove. Background Technology

[0002] An electric flame stove, also known as a plasma stove, is a new type of flame generation method. It uses a high-frequency changing electric field, where two electrodes generate an electric arc under a certain voltage. The electric arc is a beam of high-temperature ionized gas, and the electric flame stove uses the continuous electric arc as energy for heating the pot.

[0003] For example, utility model patent application number 202311369153.9 describes a furnace head with a rotating working medium jet, including: a cathode plate, a plurality of cathode flame tubes disposed on the cathode plate and having a hollow structure, a plurality of insulating seats, and a plurality of anode needles disposed on the insulating seats; the bottom of the insulating seats is provided with a plurality of air inlets, which are designed at an angle and are used to generate rotating air fluid in the arc generating space.

[0004] However, in the aforementioned utility model patent, the plasma moves rapidly outward from the flame tube with the airflow, which cannot increase the electron density, resulting in low efficiency. Even with a high-power current input, the energy of the high-power input is difficult to convert into the "high-energy state" (particle excited state, dissociation state) of the plasma, instead generating a large amount of loss.

[0005] Meanwhile, after the working gas of the furnace head enters the interior of the insulating base, it forms a centrifugal rotating airflow. When this airflow passes through the strong electric field, it is quickly carried away from the discharge area. The gas is not fully ionized, resulting in low efficiency of electrode ionization of the working gas.

[0006] Furthermore, the anode needle of this utility model patent is fixed in the connecting groove by threads. Not only does it require special tools for installation during production and maintenance, making the disassembly and assembly process cumbersome, but the threaded connection may also loosen during use or transportation in high-temperature and high-vibration working environments, affecting the normal use of the electric flame stove.

[0007] At the same time, the electrode discharge effect causes oxygen molecules in the air to separate and recombine to form ozone molecules. Excessive ozone density can harm the human body.

[0008] In response to the numerous technical problems mentioned above in the field of electric flame stoves, this utility model provides an electric flame stove with stable electrode needles, high thermal efficiency, and the ability to prevent the heat from the burner head from affecting electronic components, while also preventing ozone from harming the human body. Utility Model Content

[0009] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0010] A high-efficiency burner head includes: an upper shell, a lower shell, and a plurality of anode needles disposed between the upper shell and the lower shell;

[0011] The upper housing is provided with a plurality of cathode tubes corresponding to the anode needles, and an upper ceramic tube is provided below the bottom of the cathode tubes; the lower housing is provided with a plurality of arc-starting elements corresponding to the anode needles, and a lower ceramic tube is provided on the outside of the arc-starting elements, with the top of the lower ceramic tube abutting against the bottom of the upper ceramic tube.

[0012] The anode needle has a conical top discharge head at the top and an inverted conical bottom discharge head at the bottom. A mounting ring is also provided in the middle section. An annular mounting groove adapted to the mounting ring is provided at the connection between the upper ceramic tube and the lower ceramic tube.

[0013] The cathode tube, upper ceramic tube, anode needle, lower ceramic tube, and arc-starting component of a single set are coaxially arranged.

[0014] Preferably, the space between the end discharge head and the arc-starting component forms a first discharge zone at the central axis of the lower ceramic tube, and the tube wall of the lower ceramic tube has multiple radial air inlets.

[0015] Preferably, a second discharge zone is formed between the top discharge head and the inner wall of the cathode tube, and the mounting ring has multiple interconnected air guide holes.

[0016] Preferably, the air guide hole is inclined;

[0017] Preferably, a limiting ring is provided on the outer side of the bottom of the cathode tube, and the upper shell has a plurality of through holes corresponding to the cathode tube, wherein the outer diameter of the limiting ring is larger than the diameter of the through holes;

[0018] Preferably, the lower housing and the plurality of arc-drawing components are an integrated metal structure, and the upper housing is a metal structure;

[0019] Preferably, the upper shell and the lower shell are fixedly connected by bolts, so that the two enclose the furnace head cavity;

[0020] Preferably, the top of the lower ceramic tube is also provided with a wire groove, and the wire welded to the anode needle is connected to the anode of the power supply through the wire groove;

[0021] Preferably, an air intake device communicating with the furnace head cavity is also installed below the lower shell;

[0022] This utility model also proposes an electric flame stove, which includes the high-efficiency burner head described in any one of the above-mentioned methods.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] The bottom of the anode needle of this utility model is an inverted conical discharge head, and the arc-starting component is also conical. The first discharge zone forms an extremely strong electric field, while the radial air inlet holes are distributed circumferentially along the lower ceramic tube wall. Multiple air holes converge the airflow to the first discharge zone. The high-density gas is more easily broken down and ionized in the extremely strong electric field, and the fully ionized gas forms the initial plasma.

[0025] This invention features two discharge zones, creating a secondary ionization "avalanche effect" that ultimately forms an extremely high-temperature plasma jet, achieving efficient heat transfer.

[0026] In this invention, the cathode tube, upper ceramic tube, anode needle, and lower ceramic tube of each group are connected by abutment. Finally, the plasma components are secured by the tightening force between the upper and lower shells. This improves the efficiency of installation and disassembly, reduces the complexity of installation, rework, or maintenance, and effectively controls costs.

[0027] 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

[0028] 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 these drawings without creative effort.

[0029] Figure 1 This is a cross-sectional view of the burner head of this utility model.

[0030] Figure 2 yes Figure 1 Enlarged view of the area within circle A.

[0031] Figure 3 yes Figure 2 Cross-sectional view of the RR line.

[0032] Figure 4 This is a structural diagram of the lower ceramic tube of this utility model.

[0033] Figure 5 This is a structural diagram of the anode needle of this utility model.

[0034] Figure 6 This is an exploded view of the upper and lower shells of this utility model. Detailed Implementation

[0035] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 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.

[0037] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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; they can refer to the internal connection of two components; they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] Please see Figures 1-6 In this embodiment of the present invention, a high-efficiency burner head includes: an upper shell 1, a lower shell 2, and a plurality of anode needles 5 disposed between the upper shell 1 and the lower shell 2.

[0040] In an embodiment of this utility model, the upper housing 1 is equipped with a plurality of cathode tubes 3, which are positioned one-to-one with the anode needles 5. An upper ceramic tube 4 is provided below the bottom of the cathode tubes 3. The lower housing 2 is equipped with a plurality of arc-inducing elements 20, which are also positioned corresponding to the anode needles 5. A lower ceramic tube 6 is provided on the outside of the arc-inducing elements 20. The top of the lower ceramic tube 6 abuts against the bottom of the upper ceramic tube 4.

[0041] A mounting ring 51 is also provided in the middle section of the anode needle 5. An annular mounting groove 63 adapted to the mounting ring 51 is opened at the connection between the upper ceramic tube 4 and the lower ceramic tube 6. After the mounting ring 51 is embedded in the annular mounting groove 63, the anode needle 5 can be firmly fixed at the connection position of the upper and lower ceramic tubes 6, preventing the anode needle 5 from shifting due to vibration, high temperature deformation or long-term use, and ensuring that the relative position of the anode needle 5 with the cathode tube 3 and the arc ignition element 20 always maintains a precise correspondence (such as coaxiality and stable spacing), thus ensuring the stability of the discharge. The annular mounting groove 63 can be opened at the bottom of the upper ceramic tube 4 or at the top of the lower ceramic tube 6, or it can be formed by the upper ceramic tube 4 and the lower ceramic tube 6 each having a "half groove". There is no limitation here.

[0042] In this embodiment of the invention, the cathode tube 3, upper ceramic tube 4, anode needle 5, lower ceramic tube 6 and arc-starting component 20 of a single set are coaxially arranged.

[0043] In this embodiment of the invention, the top of the anode needle 5 is a conical tip discharge head 53, with the narrowest gap and the highest electric field strength at the tip, ensuring that the electric arc starts stably here (the tip discharge effect is amplified).

[0044] In this embodiment of the invention, the bottom of the anode needle 5 is an inverted conical discharge head 52, and the arc-starting element 20 is also conical. Discharge occurs between the two poles, and the tip focuses the electric field, concentrating the arc energy within a very small discharge gap, forming an extremely strong electric field. The energy released per unit area is far higher than that of planar or large-area discharge, enabling rapid ionization of gas. Radial air inlets 60 are distributed circumferentially along the wall of the lower ceramic tube 6. Multiple radial air inlets 60 converge the airflow into the first discharge zone 100 (the conical gap between the discharge head 52 and the conical arc-starting element 20) at the central axis of the lower ceramic tube 6. The airflow collides and decelerates within the first discharge zone 100, prolonging the residence time of the gas in the first discharge zone 100 and increasing the gas density in this region. High-density gas is more easily ionized in an extremely strong electric field, and the fully ionized gas forms the initial plasma.

[0045] In this embodiment of the invention, a second discharge region 200 is formed between the top discharge head 53 and the inner wall of the cathode tube 3. The initial plasma in the first discharge region 100, driven by a pressure difference, flows into the second discharge region 200 through the inclined air guide hole 510 of the mounting ring 51, forming a spiral plasma fluid. High-energy electrons in the plasma fluid collide with the initial ions in the spiral fluid at high frequencies, generating more electrons and ions—a secondary ionization "avalanche effect"—causing the plasma density in the second discharge region 200 to increase exponentially. The collisions and recombination between particles release a massive amount of heat energy, ultimately forming an extremely high-temperature plasma jet. This jet has highly concentrated energy and can directly act on the heating target (such as the bottom of a pot or food), achieving efficient heat transfer.

[0046] In this embodiment of the present invention, a limiting ring 31 is provided on the outer side of the bottom of the cathode tube 3, and the upper housing 1 is provided with a plurality of through holes 11 corresponding to the cathode tube 3. The outer diameter of the limiting ring 31 is larger than the diameter of the through hole 11. When the cathode tube 3 is installed through the through hole 11, the limiting ring will form a mechanical block with the edge of the through hole 11 of the upper housing 1, limiting the upward insertion depth of the cathode tube 3 into the inner side of the housing, and ensuring the stability of the cathode tube 3.

[0047] In this embodiment of the utility model, the lower housing 2 and the multiple arc-starting elements 20 are an integrated metal structure, the upper housing 1 is a metal structure, and the upper housing 1 and the lower housing 2 are connected to the power supply cathode (negative electrode or ground electrode).

[0048] In this embodiment of the invention, the upper shell 1 and the lower shell 2 are fixedly connected by bolts, so that the two together form the furnace head cavity 300. The tightening force between the upper shell 1 and the lower shell 2 keeps the multiple sets of cathode tubes 3, upper ceramic tubes 4, anode needles 5, and lower ceramic tubes 6 firmly in fixed positions.

[0049] High-power electric flame stove burners typically have hundreds of plasma components (cathodes, ceramic parts, anodes, etc.). Existing burner installation methods usually involve welding, threading, or more complex connection methods for these components. However, in this invention, the cathode tube 3, upper ceramic tube 4, anode needle 5, and lower ceramic tube 6 of each group are all connected by abutment. Finally, the tightening force between the upper shell 1 and the lower shell 2 secures the plasma components, thus improving installation and disassembly efficiency, reducing the complexity of installation, rework, or maintenance, and effectively controlling costs.

[0050] In one embodiment of this utility model, a wire groove 61 is also provided at the top of the lower ceramic tube 6, and the wire welded to the anode needle 5 is connected to the positive terminal of the power supply through the wire groove 61; in another embodiment, the wire groove 61 can also be provided at the bottom of the upper ceramic tube 4.

[0051] In this embodiment of the invention, an air intake device 7 communicating with the furnace head cavity 300 is also installed below the lower housing 2 to continuously provide sufficient gas to the furnace head cavity 300.

[0052] This utility model also proposes an electric flame stove, including any of the above-mentioned high-efficiency burners.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A high-efficiency burner head, characterized in that, include: Upper housing, lower housing, and multiple anode pins disposed between the upper housing and the lower housing; The upper housing is provided with a plurality of cathode tubes corresponding to the anode needles, and an upper ceramic tube is provided below the bottom of the cathode tubes; the lower housing is provided with a plurality of arc-starting elements corresponding to the anode needles, and a lower ceramic tube is provided on the outside of the arc-starting elements, with the top of the lower ceramic tube abutting against the bottom of the upper ceramic tube. The anode needle has a conical top discharge head at the top and an inverted conical bottom discharge head at the bottom. A mounting ring is also provided in the middle section. An annular mounting groove adapted to the mounting ring is provided at the connection between the upper ceramic tube and the lower ceramic tube. The cathode tube, upper ceramic tube, anode needle, lower ceramic tube, and arc-starting component of a single set are coaxially arranged.

2. The high-efficiency burner head according to claim 1, characterized in that, The space between the end discharge head and the arc-starting component forms the first discharge zone at the central axis of the lower ceramic tube, and the tube wall of the lower ceramic tube has multiple radial air inlets.

3. The high-efficiency burner head according to claim 1, characterized in that, A second discharge zone is formed between the top discharge head and the inner wall of the cathode tube, and the mounting ring has multiple interconnected air guide holes.

4. The high-efficiency burner head according to claim 3, characterized in that, The air vent is set at an angle.

5. The high-efficiency burner head according to claim 1, characterized in that, A limiting ring is provided on the outer side of the bottom of the cathode tube, and the upper shell has multiple through holes corresponding to the cathode tube. The outer diameter of the limiting ring is larger than the diameter of the through holes.

6. The high-efficiency burner head according to claim 1, characterized in that, The lower housing and the plurality of arc-drawing components are an integrated metal structure, and the upper housing is a metal structure.

7. The high-efficiency burner head according to claim 1, characterized in that, The upper shell and the lower shell are fixedly connected by bolts, so that the two enclose the furnace head cavity.

8. The high-efficiency burner head according to claim 1, characterized in that, The top of the lower ceramic tube is also provided with a wire groove, and the wire welded to the anode needle is connected to the anode of the power supply through the wire groove.

9. The high-efficiency burner head according to claim 1, characterized in that, An air intake device communicating with the furnace head cavity is also installed below the lower shell.

10. An electric flame stove, characterized in that, The high-efficiency burner head includes any one of claims 1 to 9.

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