Electric flame stove burner

Abstract

The invention discloses a burner head of an electric flame stove, comprising: a shell, an air inlet assembly and a plurality of plasma combustion assemblies. The plasma combustion assembly of the invention is provided with a plurality of heat dissipation air ducts, and the air inlet and the air outlet are respectively located at the two ends of the heat dissipation air ducts, so as to form a convection airflow, effectively dissipate the heat dissipation fins on the anode needle, and prevent the heat from being transferred to the circuit board through the conductor; the plasma combustion assembly of the invention does not need to be threaded or welded, and the top and bottom of the shell are used to clamp the accessories of the plasma combustion assembly, so the installation process is more simple and direct, and the operation is also simple and convenient when the plasma combustion assembly is maintained or replaced in the later stage, which reduces the maintenance cost and time; the upper positioning groove on the top of the upper ceramic tube and the lower positioning groove on the bottom of the lower ceramic tube are respectively engaged with the upper end and the lower end of the heat dissipation fin, so as to ensure that the heat dissipation fin is accurately placed in the predetermined position during 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, comprising: 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 arranged 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 comprises: a shell, an air inlet assembly and a plurality of plasma combustion assemblies;

[0009] The plasma combustion assembly is composed of a cathode nozzle, an upper ceramic tube, a lower ceramic tube and an anode needle. The cathode nozzle, the upper ceramic tube and the lower ceramic tube are abutted in sequence. A plurality of heat dissipation fins are arranged at the lower end of the anode needle. A heat dissipation air duct is formed between any two heat dissipation fins and the wall of the upper ceramic tube. A plasma combustion channel is formed between the cathode nozzle and the top of the upper ceramic tube.

[0010] The top of the upper ceramic tube is in a nearly closed state, and a plurality of air outlet holes are provided in the top region thereof, and the air outlet holes connect the heat dissipation air duct with the plasma combustion channel; the bottom of the lower ceramic tube is in a nearly closed state, and a plurality of air inlet holes are provided in the bottom region thereof, and the air inlet holes and the air outlet holes are respectively located at two ends of the heat dissipation air duct and correspond to each other one by one;

[0011] Preferably, a plurality of mounting holes corresponding to the plasma combustion assembly are provided at the bottom of the shell, and a connecting pipe is provided below the lower ceramic tube, and the outer diameter of the upper end of the connecting pipe is greater than the outer diameter of the lower end of the connecting pipe, so that the lower end of the connecting pipe passes through the mounting hole and the upper end of the connecting pipe abuts against the bottom of the shell;

[0012] Preferably, the top area of ​​the upper ceramic tube is also provided with an upper positioning groove corresponding to the heat dissipation fin, so that the upper end of the heat dissipation fin can be engaged and connected with the upper positioning groove;

[0013] Preferably, the bottom area of ​​the lower ceramic tube is also provided with a lower positioning groove corresponding to the heat dissipation fin, so that the lower end of the heat dissipation fin can be engaged and connected with the lower positioning groove;

[0014] Preferably, the cathode nozzle is arranged on the top of the shell, and the air inlet assembly is installed on the bottom of the shell;

[0015] Preferably, an electrode hole is also provided at the center of the top of the upper ceramic tube, and the anode needle passes through the electrode hole and extends upward into the plasma combustion channel;

[0016] Preferably, the interior of the connecting tube is connected to the interior of the lower ceramic tube, and the inner cavity of the connecting tube provides an insulating channel for the anode needle to electrically connect the circuit.

[0017] Preferably, the housing is fixed at its top and bottom by bolts.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The plasma combustion assembly of the present invention is provided with a plurality of heat dissipation air ducts, and the air inlet and the air outlet are respectively located at the two ends of the heat dissipation air duct, so as to form a convection airflow, effectively dissipate the heat dissipation fins on the anode needle, and prevent the heat from being transferred to the circuit board through the conductor;

[0020] The plasma combustion assembly of the present invention does not require threaded connection or welding, and the top and bottom of the shell are used to clamp the accessories of the plasma combustion assembly, so the installation process is simpler and more direct. When the plasma combustion assembly is maintained or replaced in the later stage, the operation is also simple and convenient, which reduces the maintenance cost and time.

[0021] The upper positioning groove on the top of the upper ceramic tube and the lower positioning groove on the bottom of the lower ceramic tube are respectively engaged with the upper end and the lower end of the heat dissipation fin, which can ensure that the heat dissipation fin is accurately placed at a predetermined position during installation.

[0022] 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

[0023] 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.

[0024] Figure 1 It is a cross-sectional view of a furnace head of the present invention.

[0025] Figure 2 It is an exploded view of the plasma combustion assembly of the present invention.

[0026] Figure 3 It is a three-dimensional diagram of the ceramic tube of the present invention.

[0027] Figure 4 It is a cross-sectional view of the plasma combustion assembly of the present invention. 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 to Figure 3 In an embodiment of the present invention, a burner head of an electric flame stove includes: a shell 1, an air inlet component 2 and a plurality of plasma combustion components 3.

[0033] like Figure 2 to Figure 4 As shown, the plasma combustion assembly 3 is composed of a cathode nozzle 31, an upper ceramic tube 32, a lower ceramic tube 33 and an anode needle 34. The cathode nozzle 31, the upper ceramic tube 32 and the lower ceramic tube 33 are abutted in sequence. A plurality of heat dissipation fins 341 are provided at the lower end of the anode needle 34. A heat dissipation duct 100 is formed between any two heat dissipation fins 341 and the wall of the upper ceramic tube 32. Therefore, there are several heat dissipation ducts 100 in the plasma combustion assembly 3, and a plasma combustion channel is formed between the cathode nozzle 31 and the top of the upper ceramic tube 32.

[0034] In the embodiment of the present invention, the top of the upper ceramic tube 32 is in a nearly closed state, and a plurality of air outlet holes 321 are provided in its top area, and the air outlet holes 321 connect the heat dissipation duct 100 with the plasma combustion channel; the bottom of the lower ceramic tube 33 is in a nearly closed state, and a plurality of air inlet holes 331 are provided in its bottom area, and the air inlet holes 331 and the air outlet holes 321 are respectively located at the two ends of the heat dissipation duct 100, and correspond one to one.

[0035] A heat dissipation duct 100 is formed between any two heat dissipation fins 341 and the tube wall of the upper ceramic tube 32, and the existence of the heat dissipation fins 341 increases the heat dissipation area. When the electric flame stove is working, the anode needle 34 generates heat, and the heat is transferred to the heat dissipation fins 341. Since the air inlet 331 and the air outlet 321 are respectively located at the two ends of the heat dissipation duct 100, the cold air enters the heat dissipation ducts 100 from the air inlet 331 with a lower temperature, and in the process of flowing through the heat dissipation duct 100, the cold air exchanges heat with the heat dissipation fins 341 and the upper ceramic tube 32, absorbs heat and becomes hot air, and then is discharged from the air outlet 321 with a higher temperature into the plasma combustion channel.

[0036] The heat dissipation duct 100 forms convection, and the convective airflow smoothly carries the heat generated by the anode needle 34, thereby achieving the purpose of effective heat dissipation, ensuring that the anode needle 34 and other components work within a suitable temperature range, and preventing heat from being transferred to the circuit board.

[0037] After completing the heat exchange with the heat dissipation fins 341 and other components, the hot air flowing out of the air outlet 321 enters the plasma combustion channel. The plasma in the plasma combustion channel is in a continuous ionization and reaction process, and fresh gas needs to be continuously replenished to maintain the reaction. The incoming airflow can provide more gas molecules for the plasma reaction, participate in the ionization reaction of the plasma, and further promote the generation and maintenance of the plasma.

[0038] In the embodiment of the present invention, the mounting hole corresponds to the plasma combustion assembly 3, providing a precise mounting position for the plasma combustion assembly 3. The connecting tube 332 below the lower ceramic tube 33 has a unique design of a larger upper diameter and a smaller lower diameter, so that the lower end of the connecting tube 332 can smoothly pass through the mounting hole, while the upper end cannot pass through due to the larger outer diameter, thereby abutting against the bottom of the shell 1. This structure forms a reasonable space interval between the air inlet 331 and the bottom of the shell 1, allowing air to gather more stably in this space and enter the air inlet 331 at a relatively stable flow rate.

[0039] In the embodiment of the present invention, the top area of ​​the upper ceramic tube 32 is also provided with an upper positioning groove 323 corresponding to the heat dissipation fin 341, so that the upper end of the heat dissipation fin 341 can be interlocked and connected with the upper positioning groove 323; the bottom area of ​​the lower ceramic tube 33 is also provided with a lower positioning groove 333 corresponding to the heat dissipation fin 341, so that the lower end of the heat dissipation fin 341 can be interlocked and connected with the lower positioning groove 333.

[0040] The upper positioning groove 323 at the top area of ​​the upper ceramic tube 32 and the lower positioning groove 333 at the bottom area of ​​the lower ceramic tube 33 are specially designed for the heat dissipation fin 341. During installation, the upper and lower ends of the heat dissipation fin 341 are respectively engaged with the upper and lower positioning grooves 333. This design is like the parts of a puzzle fitting together, which can ensure that the heat dissipation fin 341 is accurately placed at the predetermined position during installation, and ensure that the air inlet 331 and the air outlet 321 are respectively located at the two ends of the heat dissipation duct 100.

[0041] like Figure 1As shown, in the embodiment of the present invention, the present invention uses bolts to fix the top and bottom of the shell 1 to clamp the plasma combustion component 3. Compared with other welding, riveting or threaded connection processes of the plasma combustion component 3, the installation process is simpler and more direct. Workers only need to place the plasma combustion component 3 in the specified position, and then tighten the bolts to fix the top and bottom of the shell 1 to complete the fixation, which greatly shortens the installation time and improves the production assembly efficiency. When maintaining or replacing the plasma combustion component 3 in the later stage, it is only necessary to loosen the bolts on the shell 1 to easily remove the component. The operation is simple and convenient, reducing maintenance costs and time.

[0042] In the embodiment of the present invention, after the bolts are fastened to the housing 1, a strong clamping force can be formed on the plasma combustion assembly 3, so that it fits tightly in the housing 1. This stable connection method can effectively resist the strong vibration generated when the electric flame stove is working and the impact of high-speed airflow. Even in a long-term and high-intensity use environment, the plasma combustion assembly 3 can always remain in place without displacement or loosening, thereby ensuring the stability and reliability of the operation of the electric flame stove.

[0043] An electrode hole 324 is also provided at the center of the top of the upper ceramic tube 32. The anode needle 34 passes through the electrode hole 324 at the center of the top of the upper ceramic tube 32 and extends upward into the plasma combustion channel to produce plasma in cooperation with the cathode nozzle 31. When the circuit is connected, an electric field is formed between the anode needle 34 and the cathode nozzle 31. Under the action of the electric field, the cathode nozzle 31 emits electrons, which collide with gas molecules in the plasma combustion channel under the acceleration of the electric field, ionizing the gas molecules and thus generating plasma.

[0044] In the next embodiment, the interior of the connecting tube 332 is connected to the interior of the lower ceramic tube 33 , and the inner cavity of the connecting tube 332 provides an insulating channel for the anode needle 34 to electrically connect the circuit.

[0045] In the next embodiment, the cathode nozzle 31 is arranged on the top of the shell 1, and the plasma flame can heat the upper pot after being ejected, and the air inlet component 2 is installed at the bottom of the shell 1, and can also be installed on the side of the shell 1.

[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, characterized in that: include: A housing, an air inlet assembly and a plurality of plasma combustion assemblies; The plasma combustion assembly is composed of a cathode nozzle, an upper ceramic tube, a lower ceramic tube and an anode needle. The cathode nozzle, the upper ceramic tube and the lower ceramic tube are abutted in sequence. A plurality of heat dissipation fins are arranged at the lower end of the anode needle. A heat dissipation air duct is formed between any two heat dissipation fins and the wall of the upper ceramic tube. A plasma combustion channel is formed between the cathode nozzle and the top of the upper ceramic tube. The top area of ​​the upper ceramic tube is also provided with an upper positioning groove corresponding to the heat dissipation fin, so that the upper end of the heat dissipation fin can be engaged with the upper positioning groove; the bottom area of ​​the lower ceramic tube is also provided with a lower positioning groove corresponding to the heat dissipation fin, so that the lower end of the heat dissipation fin can be engaged with the lower positioning groove; The top of the upper ceramic tube is in a nearly closed state, and a plurality of air outlet holes are provided in the top area, and the air outlet holes connect the heat dissipation air duct with the plasma combustion channel; the bottom of the lower ceramic tube is in a nearly closed state, and a plurality of air inlet holes are provided in the bottom area, and the air inlet holes and the air outlet holes are respectively located at the two ends of the heat dissipation air duct and correspond one to one.

2. The burner head of the electric flame stove according to claim 1, characterized in that: The shell bottom is provided with a plurality of mounting holes corresponding to the plasma combustion assembly, and a connecting tube is provided below the lower ceramic tube, and the outer diameter of the upper end of the connecting tube is larger than the outer diameter of the lower end of the connecting tube, so that the lower end of the connecting tube passes through the mounting hole and the upper end of the connecting tube abuts against the shell bottom.

3. The burner head of the electric flame stove according to claim 1, characterized in that: The cathode nozzle is arranged on the top of the shell, and the air inlet assembly is installed on the bottom of the shell.

4. The burner head of the electric flame range according to claim 1, characterized in that: An electrode hole is also provided at the center of the top of the upper ceramic tube, and the anode needle passes through the electrode hole and extends upward into the plasma combustion channel.

5. The burner head of the electric flame range according to claim 2, characterized in that: The interior of the connecting tube is connected to the interior of the lower ceramic tube, and the inner cavity of the connecting tube provides an insulating channel for the anode needle to electrically connect the circuit.

6. The burner head of the electric flame range according to claim 1, characterized in that: The housing is fixed at the top and bottom by bolts.

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