Burner head of electric flame stove

Abstract

The invention discloses a burner head of an electric flame stove, comprising a cathode upper shell, a cathode lower shell, and a plurality of plasma burners, wherein the cathode upper shell and the cathode lower shell enclose a furnace chamber. The invention combines the air inlet holes arranged in the normal direction, the heat dissipation duct, and the nearly closed arrangement of the top of the first ceramic tube, so as to efficiently cool the anode needle, effectively reduce the temperature of the anode needle, and avoid high temperature from causing damage to the anode needle itself and components such as a circuit board connected thereto; the plasma burner of the invention abandons the threaded connection method in the prior art, adopts the chimeric connection and abutment connection method, and does not require cumbersome operations such as thread alignment and screwing, thereby saving installation time and labor costs, and simplifying the installation process.

Description

Technical Field

[0001] The invention relates to a burner head of an electric flame stove, in particular to an electric flame stove. Background Art

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

[0003] For example, the invention patent with application number 202311369153.9 discloses a furnace head with a rotating working medium jet, including: a cathode plate, a plurality of cathode flame-spraying tubes with a hollow structure arranged on the cathode plate, a plurality of insulating seats, and a plurality of anode needles arranged on the insulating seats; a plurality of air inlet holes are provided at the bottom of the insulating seat, and the air inlet holes are inclined and used to produce a rotating air fluid in the arc generating space.

[0004] The insulating seat and cathode flame-spraying tube of the invention patent are directly clamped and fixed by the guide plate and the cathode plate, so the assembly process is simple and the production cost is reduced. However, the anode needle of the invention patent is fixed in the connection groove by thread, which not only requires special tools for installation during production and maintenance, resulting in cumbersome disassembly and assembly process, but also the threaded connection may become loose in the high temperature and high vibration working environment during user use or transportation, affecting the normal use of the electric flame stove.

[0005] In addition, the anode needle of the current electric flame stove generates a temperature of several thousand degrees Celsius when discharging, and the high temperature is transmitted to the circuit board through the conductor electrically connected to the anode needle, causing the electronic components to overheat and be damaged. The above-mentioned invention patent has a cyclone air inlet hole and an external rotating airflow cooling insulation seat, but the anode needle is installed in the connection groove, which cannot be effectively cooled, and there is no technical solution for cooling the anode needle.

[0006] Therefore, at this stage, technicians in this field not only need a structure to ensure that the components of the plasma burner are not easily displaced and loosened, but also need to solve the problem of the ultra-high temperature of the anode needle being transferred to the circuit board. Summary of the invention

[0007] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0008] A burner head of an electric flame stove, comprising a cathode upper shell, a cathode lower shell, and a plurality of plasma burners, wherein the cathode upper shell and the cathode lower shell enclose a furnace cavity;

[0009] A single plasma burner is composed of a cathode nozzle, a first ceramic tube, a second ceramic tube and an anode needle, wherein the cathode nozzle, the first ceramic tube and the second ceramic tube are sequentially engaged and connected;

[0010] The top of the first ceramic tube is closed and has an electrode hole, and the bottom of the second ceramic tube is nearly closed;

[0011] The upper end of the anode needle extends upward through the electrode hole, and a plasma torch channel is formed between the upper end of the anode needle and the cathode nozzle;

[0012] A limiting ring is provided at the lower end of the anode needle, and the top of the first ceramic tube and the bottom of the second ceramic tube abut against the limiting ring respectively;

[0013] The tube wall of the first ceramic tube and the gap between the tube wall of the second ceramic tube and the limiting ring form a heat dissipation duct, and the tube wall of the second ceramic tube is also provided with a plurality of air inlet holes;

[0014] Preferably, the air inlet hole is arranged along the normal direction of the ceramic tube wall;

[0015] Preferably, the first ceramic tube top plate is also provided with a plurality of cyclone holes, and the cyclone holes connect the heat dissipation air duct with the plasma torch channel;

[0016] Preferably, a connecting tube is further provided below the bottom of the second ceramic tube, and the anode needle is electrically connected to the external circuit board through the inside of the connecting tube;

[0017] Preferably, the outer diameter of the connecting tube is smaller than the outer diameter of the second ceramic tube, and the connecting tube passes through the cathode lower shell and extends downward;

[0018] The present invention further comprises a burner head fan, wherein the burner head fan is in communication with the furnace cavity of the burner head;

[0019] Preferably, the cathode upper shell and the cathode lower shell are fixed by bolt connection.

[0020] Compared with the prior art, the advantages of the present invention are: the air inlet holes arranged in the normal direction of the present invention, the heat dissipation duct and the nearly closed arrangement of the top of the first ceramic tube are combined to efficiently cool the anode needle, effectively reduce the temperature of the anode needle, and avoid high temperature from damaging the anode needle itself and components such as the circuit board connected thereto; the plasma burner of the present invention abandons the threaded connection method in the prior art, and adopts a chimeric connection and abutment connection method, which does not require tedious operations such as thread alignment and screwing, thereby saving installation time and labor costs and simplifying the installation process.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a cross-sectional schematic diagram of the present invention.

[0024] Figure 2 yes Figure 1 Enlarged view of the middle R circle.

[0025] Figure 3 It is an exploded view of the plasma burner of the present invention.

[0026] Figure 4 It is a front view of the plasma burner of the present invention.

[0027] Figure 5 yes Figure 4 Cross-section along line AA. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0030] In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal communication of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present invention described later can be combined with each other as long as they do not conflict with each other.

[0032] See also Figure 1 In an embodiment of the present invention, a burner head of an electric flame stove includes a cathode upper shell 100, a cathode lower shell 200, and a plurality of plasma burners 300. The cathode upper shell 100 and the cathode lower shell 200 enclose a furnace chamber 120;

[0033] like Figure 2 to Figure 5 As shown, in the embodiment of the present invention, a single plasma burner 300 is composed of a cathode nozzle 310, a first ceramic tube 320, a second ceramic tube 330 and an anode needle 340, and the coaxially arranged cathode nozzle 310, the first ceramic tube 320 and the second ceramic tube 330 are sequentially interlocked and connected; the top of the first ceramic tube 320 is nearly closed, and the bottom of the second ceramic tube 330 is nearly closed, and a limiting ring 341 is provided at the lower end of the anode needle 340, and the top of the first ceramic tube 320 and the bottom of the second ceramic tube 330 respectively abut against the limiting ring 341.

[0034] The combination of the interlocking connection and the abutting connection of the plasma burner 300 effectively constrains the structure of the entire plasma burner 300 in both radial and axial directions, forming a stable whole. It is not easy for components to loosen or fall off in a high-temperature working environment, thereby improving the stability and reliability of the plasma burner 300 structure.

[0035] The plasma burner 300 of the present invention abandons the threaded connection method in the prior art and adopts a chimeric connection and abutment connection method, which does not require tedious operations such as thread alignment and screwing, thereby saving installation time and labor costs and simplifying the installation process.

[0036] In the embodiment of the present invention, an electrode hole 322 is provided on the top of the first ceramic tube 320, and the upper end of the anode needle 340 extends upward through the electrode hole 322, and a plasma torch channel 380 is formed between the upper end of the anode needle 340 and the cathode nozzle 310; when under the action of a certain voltage, the gas in the plasma torch channel 380 is ionized to form plasma, generating a continuous electric arc, thereby providing energy for heating the pot body, which is the basis for the electric flame stove to realize the heating function.

[0037] In the embodiment of the present invention, the gap between the tube wall of the first ceramic tube 320 and the tube wall of the second ceramic tube 330 and the limiting ring 341 forms a heat dissipation duct 390, and a plurality of air inlet holes 331 are provided on the tube wall of the second ceramic tube 330, and the gas in the furnace chamber 120 enters the heat dissipation duct 390 through the air inlet holes 331. The air inlet holes 331 are arranged along the normal direction of the tube wall of the second ceramic tube 330, so that the airflow accurately collides with the limiting ring 341 at a specific angle. This direct contact method can quickly take away the heat of the limiting ring 341, prevent heat from accumulating at the limiting ring 341, and effectively reduce the overall temperature of the anode needle 340.

[0038] In the embodiment of the present invention, since the top of the first ceramic tube 320 is closed, the plasma torch channel 380 is effectively isolated from the heat dissipation duct 390, so that the flow path of air in the heat dissipation duct 390 is clearer and more effective, thereby avoiding direct mixing of high-temperature gas in the plasma torch channel 380 with the air in the heat dissipation duct 390, thereby ensuring the cooling effect of the air in the heat dissipation duct 390.

[0039] The present invention combines the air inlet 331 arranged in the normal direction, the heat dissipation duct 390 and the nearly closed arrangement of the top of the first ceramic tube 320 to efficiently cool the anode needle 340, effectively reduce the temperature of the anode needle 340, and avoid high temperature from damaging the anode needle 340 itself and components such as the circuit board connected thereto.

[0040] In the embodiment of the present invention, a plurality of cyclone holes 321 formed on the top plate of the first ceramic tube 320 allow the heat dissipation air passage 390 to communicate with the plasma torch passage 380 .

[0041] The air in the heat dissipation duct 390 after absorbing the heat enters the plasma torch channel 380 through the multiple cyclone holes 321 opened on the top plate of the first ceramic tube 320 .

[0042] The air entering the plasma torch channel 380 forms a cyclonic airflow, which not only takes away the heat from the cathode nozzle 310 , but also stabilizes and constrains the plasma, making the plasma more concentrated and stable in the torch channel 380 .

[0043] In the next embodiment, a connecting tube 332 is further provided below the bottom of the second ceramic tube 330 , and the connecting tube 332 provides a stable insulating and isolating connecting channel between the anode needle 340 and the external circuit board.

[0044] The present invention further comprises a furnace head fan 400 , which is in communication with the furnace cavity 120 of the furnace head to provide continuous gas to the furnace cavity 120 .

[0045] In the next embodiment, the cathode upper shell 100 and the cathode lower shell 200 are fixed by bolt connection, so that the components of the plasma burner 300 are clamped and pressed. Even if they are shaken or vibrated, the components will not be displaced or loosened.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A burner head of an electric flame stove, comprising a cathode upper shell, a cathode lower shell, and a plurality of plasma burners, wherein the cathode upper shell and the cathode lower shell enclose a furnace chamber; characterized in that: A single plasma burner is composed of a cathode nozzle, a first ceramic tube, a second ceramic tube and an anode needle, wherein the cathode nozzle, the first ceramic tube and the second ceramic tube are sequentially engaged and connected; The top of the first ceramic tube is closed and has an electrode hole, and the bottom of the second ceramic tube is nearly closed; The upper end of the anode needle extends upward through the electrode hole, and a plasma torch channel is formed between the upper end of the anode needle and the cathode nozzle; A limiting ring is provided at the lower end of the anode needle, and the top of the first ceramic tube and the bottom of the second ceramic tube abut against the limiting ring respectively; The gap between the tube wall of the first ceramic tube and the tube wall of the second ceramic tube and the limiting ring forms a heat dissipation duct, and the top plate of the first ceramic tube is also provided with a plurality of cyclone holes, and the cyclone holes connect the heat dissipation duct with the plasma torch channel; The wall of the second ceramic tube is also provided with a plurality of air inlet holes, and the air inlet holes are arranged along the normal direction of the wall of the ceramic tube.

2. The burner head of the electric flame stove according to claim 1, characterized in that: A connecting tube is also provided below the bottom of the second ceramic tube, and the anode needle is electrically connected to the external circuit board through the inside of the connecting tube.

3. The burner head of the electric flame range according to claim 2, characterized in that: The outer diameter of the connecting tube is smaller than the outer diameter of the second ceramic tube, and the connecting tube passes through the cathode lower shell and extends downward.

4. The burner head of the electric flame range according to claim 1, characterized in that: It also includes a furnace head fan, which is communicated with the furnace cavity of the furnace head.

5. The burner head of the electric flame range according to claim 1, characterized in that: The cathode upper shell and the cathode lower shell are fixed by bolt connection.

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