Burner head and electric flame stove capable of suppressing ozone emission

Abstract

The present invention discloses a burner head for suppressing ozone emission, comprising: an annular top plate, a ceramic shell, an annular bottom plate, a plurality of cathode nozzles, a plurality of ceramic tubes and a plurality of anode needles, wherein the shell has an annular partition inside, and the partition divides the inner cavity of the shell into an air cavity and a hydrogen cavity. The present invention allows hydrogen to enter the plasma combustion channel through the radial hydrogen inlet hole at the upper end of the combustion tube, and a combustion reaction occurs with the generated ozone in a high-temperature plasma environment, which not only consumes ozone and suppresses ozone emission to the outside, but also releases energy to assist combustion; the bottom of the cathode nozzle is embedded in the top of the combustion tube, the upper end of the ceramic tube is embedded in the bottom of the combustion tube, and at the same time, the bottom of the ceramic tube is clamped with the anode needle limiting ring and the clamping ring inside the combustion tube, so that the various components are tightly connected, effectively preventing loosening and displacement between the various components; the embedding method between the various components of the burner head makes the installation process relatively simple and fast, which can shorten the installation time and cost to a certain extent.

Description

Technical Field

[0001] The invention relates to a burner head capable of suppressing ozone emission, in particular to an electric flame cooker. Background Art

[0002] In today's society, electric flame stoves are becoming increasingly popular and used as a fast and efficient cooking device. The working principle of electric flame stoves is mainly to form an arc through electric shock of electrodes, and use the Joule heat of the arc to heat the pot. However, the ozone problem generated when using traditional electric flame stoves has gradually attracted people's attention. Ozone is a strong oxidant that is harmful to the human respiratory system and eyes, and long-term exposure may cause health problems. Therefore, various electric flame stoves with the ability to inhibit ozone emissions have been developed in the prior art.

[0003] For example, the invention patent with application number CN202311071564.X proposes an electric flame stove that can suppress ozone. The hydrogen injector in the furnace of this invention patent faces challenges. Long-term high temperature may cause the injector to deform or break.

[0004] Another example is the invention patent with application number CN202510033115.9, which proposes an electric flame stove that effectively inhibits ozone spillage. It uses electrodes to spray hydrogen, so that hydrogen can quickly diffuse in the plasma burner and fully contact with the ozone generated by the discharge, and timely convert ozone into harmless substances such as oxygen. However, the electric flame stove has a complex structure, and each electrode end needs to be connected to a hydrogen pipe. The electric flame stove usually has hundreds of electrodes. Manually fixing the electrodes and hydrogen pipes is time-consuming and labor-intensive, so it is necessary for technicians in this field to make improvements. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] A burner head for suppressing ozone emission, comprising: an annular top plate, a ceramic shell, an annular bottom plate, a plurality of cathode nozzles, a plurality of ceramic tubes and a plurality of anode needles, wherein the top and bottom of the shell are connected to the top plate and the bottom plate respectively; an annular partition is provided inside the shell, wherein the partition divides the inner cavity of the shell into an air cavity and a hydrogen cavity, a hydrogen pipe is provided on the partition at the bottom of the hydrogen cavity, and the hydrogen pipe extends downward through the bottom plate; a plurality of combustion tubes with internal cavities and interconnected up and down are provided on the partition, wherein the upper end of the combustion tube is located in the hydrogen cavity, and the lower end of the combustion tube is located in the air cavity, a plurality of tangential air inlet holes are provided on the side wall of the lower end of the combustion tube in the circumferential direction, and a plurality of radial hydrogen inlet holes are provided on the side wall of the upper end of the combustion tube in the circumferential direction;

[0007] Preferably, the hydrogen pipe, the combustion pipe, the partition plate and the shell are an integrated ceramic structure;

[0008] Preferably, the top plate is evenly provided with a plurality of nozzle mounting holes, the bottom plate is evenly provided with a plurality of ceramic tube mounting holes, the bottom of the cathode nozzle is installed in the nozzle mounting hole, and the bottom of the cathode nozzle is embedded with the top of the combustion tube, the bottom of the ceramic tube is provided with a connecting tube with an inner diameter smaller than the inner diameter of the ceramic tube, the connecting tube is installed in the ceramic tube mounting hole and extends downward, and the upper end of the ceramic tube is embedded with the bottom of the combustion tube;

[0009] Preferably, a clamping ring is further provided at the lower end of the combustion tube, a limiting ring is provided at the lower end of the anode needle, the upper end of the anode needle passes through the clamping ring and extends upward, and the clamping ring clamps the limiting ring and limits the limiting ring from moving upward;

[0010] Preferably, the bottom of the ceramic tube is clamped under the limiting ring and limits the limiting ring from moving downward;

[0011] Preferably, a plasma combustion channel is formed between the anode needle, the combustion tube and the cathode nozzle;

[0012] Preferably, the top plate and the bottom plate are fixedly connected to the partition plate in the ceramic shell by bolts;

[0013] The present invention also provides an electric flame stove, comprising any one of the burner heads for suppressing ozone emission described above.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] The present invention allows hydrogen to enter the plasma combustion channel through the radial hydrogen inlet hole at the upper end of the combustion tube, and reacts with the generated ozone in a high-temperature plasma environment, which not only consumes ozone and inhibits ozone emission to the outside, but also releases energy to assist combustion;

[0016] The bottom of the cathode nozzle of the present invention is embedded in the top of the combustion tube, the upper end of the ceramic tube is embedded in the bottom of the combustion tube, and the bottom of the ceramic tube is clamped with the anode needle limiting ring and the clamping ring inside the combustion tube, so that the various components are tightly connected, effectively preventing looseness and displacement between the various components;

[0017] The embedding and clamping modes between the components of the present invention make the installation process relatively simple and fast, and can shorten the installation time and cost to a certain extent.

[0018] 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

[0019] 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.

[0020] Figure 1 It is a cross-sectional view of the present invention.

[0021] Figure 2 It is a schematic diagram of the working principle of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the top plate.

[0023] Figure 4 It is a structural diagram of the base plate. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] See also Figure 1In an embodiment of the present invention, a burner for suppressing ozone emission includes: an annular top plate 1, a ceramic shell 2, an annular bottom plate 3, a plurality of cathode nozzles 4, a plurality of ceramic tubes 5 and a plurality of anode needles 6, wherein the top and the bottom of the shell 2 are respectively connected to the top plate 1 and the bottom plate 3;

[0029] In the embodiment of the present invention, the shell 2 has an annular partition 210 inside, and the partition 210 divides the inner cavity of the shell 2 into an air cavity 100 and a hydrogen cavity 200. A hydrogen pipe 22 is arranged on the partition 210, and the hydrogen pipe 22 extends downward through the bottom plate 3; a plurality of combustion tubes 23 with internal cavities and interconnected up and down are arranged on the partition 210, the upper end of the combustion tube 23 is located in the hydrogen cavity 200, and the lower end of the combustion tube 23 is located in the air cavity 100, and a plurality of tangential air inlet holes 231 are arranged on the side wall of the lower end of the combustion tube 23 along the circumferential direction, and a plurality of radial hydrogen inlet holes 232 are arranged on the side wall of the upper end of the combustion tube 23 along the circumferential direction.

[0030] Its working principle is:

[0031] like Figure 1 and Figure 2 As shown, air enters from the air cavity 100 through the tangential air inlet hole 231 at the lower end of the combustion tube 23, forming a rotating airflow for cooling the combustion tube 23 and providing sufficient ionized gas at the same time; discharge between the anode needle 6 and the cathode nozzle 4 causes the gas to form a plasma combustion channel 300, and plasma is generated through high-voltage ionization. During the ionization process, some oxygen atoms in the air generate ozone; hydrogen enters the plasma combustion channel 300 through the radial hydrogen inlet hole 232 at the upper end of the combustion tube 23, and undergoes a combustion reaction with the generated ozone in a high-temperature plasma environment, which not only consumes ozone and suppresses ozone emission to the outside, but also releases energy to assist combustion.

[0032] In the embodiment of the present invention, a plurality of nozzle mounting holes 11 are evenly arranged on the top plate 1, a plurality of ceramic tube mounting holes 31 are evenly arranged on the bottom plate 3, the bottom of the cathode nozzle 4 is engaged with the nozzle mounting hole 11 to achieve installation and fixation, and the outer diameter of the connecting tube 51 is smaller than the inner diameter of the ceramic tube, and the connecting tube 51 passes through the ceramic tube mounting hole 31 and extends downward. This design enables the anode needle 6 to be electrically connected to the power supply through the internal insulating channel of the connecting tube 51.

[0033] The bottom of the cathode nozzle 4 is embedded in the top of the combustion tube 23, the upper end of the ceramic tube 5 is embedded in the bottom of the combustion tube 23, and the bottom of the ceramic tube 5 is abutted against the limiting ring 61 on the anode needle 6 and the clamping ring 230 inside the combustion tube 23 to form a clamping and fixing structure. This clamping and fixing method makes the various components tightly connected as a whole, greatly improving the stability of the burner structure and effectively preventing loosening and displacement between components under complex working conditions such as high temperature and high pressure.

[0034] In this embodiment, the abutment between the retaining ring 230 and the limiting ring 61 can accurately position the anode needle 6 at a specific position inside the combustion tube 23. At the same time, the restriction of the limiting ring 61 by the bottom of the ceramic tube 5 further enhances the stability of the anode needle 6, so that the anode needle 6 will not shake or shift during operation.

[0035] The abutment method is more convenient during assembly. The operator can easily pass the anode needle 6 through the clamp ring 230, and make the limit ring 61 abut against the clamp ring 230 in place, and at the same time abut the bottom of the ceramic tube 5 under the limit ring 61. The whole assembly process is simple and fast. When the furnace head needs to be maintained or repaired, this abutment method is also convenient for disassembly. It only needs to separate the relevant parts in a certain order to inspect, repair or replace the anode needle 6, the combustion tube 23 or the ceramic tube 5, etc., which reduces the maintenance cost and difficulty and improves the maintainability of the equipment.

[0036] In the next embodiment, the top plate 1, the bottom plate 3 and the partition plate 210 are fastened by bolts to form a rigid skeleton, and the upper and lower ends of the combustion tube 23 are respectively embedded with the cathode nozzle 4 and the ceramic tube 5, and the radial force generated by the bolt clamping is used to achieve a gap-free fit to ensure the coaxiality of the plasma combustion channel 300; the anode needle 6 is abutted against the limit ring 61 by the clamping ring 230, and is axially locked in the center of the combustion tube 23 under the action of the bolt preload force to prevent the electrode offset from affecting the discharge stability.

[0037] The inlay and abutment between the components of the present invention make the installation process relatively simple and fast, and can shorten the installation time and cost to a certain extent. The bolt connection is convenient for disassembly during maintenance or overhaul. By unscrewing the bolts, the furnace head can be easily opened to inspect, replace or repair the internal components. Compared with some integral or complex connection furnace heads, it has better maintainability.

[0038] The combination of scarfing and bolting can make the connection between the various parts of the furnace head more stable, and can better maintain the integrity and stability of the structure when facing external forces such as vibration and impact. The tightening force of the bolts can effectively suppress the relative displacement between the parts, and the close fit of the scarfing can also buffer and absorb vibration energy to a certain extent, thereby improving the vibration resistance of the furnace head and extending its service life.

[0039] In the next embodiment, the integrated ceramic structure of the present invention integrates the hydrogen pipe 22, the combustion tube 23, the partition 210 and the outer shell 2, reducing the connection points and sealing links between the components, making the structure of the burner head more compact and simple, which not only reduces the difficulty of assembly and improves production efficiency, but also reduces the leakage, looseness and other problems that may occur at the connection parts, thereby enhancing the overall reliability and stability of the burner head.

[0040] like Figure 1~Figure 4As shown, the installation process of the present invention is:

[0041] S1, passing the upper end of the cathode nozzle 4 through the nozzle mounting hole 11 and making the bottom of the cathode nozzle 4 abut against the top plate 1;

[0042] S2, connecting the outer shell 2 to the top plate 1, and making the top of the combustion tube 23 fit into the bottom of the cathode nozzle 4;

[0043] S3, passing the upper end of the anode needle 6 through the clamping ring 230 of the combustion tube 23, and making the limiting ring 61 at the lower end of the anode needle 6 abut against the clamping ring 230;

[0044] S4, the bottom of the ceramic tube 5 is abutted against the limiting ring 61 at the lower end of the anode needle 6;

[0045] S5. Connect the bottom plate 3 to the bottom of the shell 2, insert the ceramic tube installation hole 31 into the corresponding connecting tube 51, and fix the top plate 1 and the bottom plate 3 with bolts to fix the overall structure of the furnace head.

[0046] The installation method of each component of the present invention is relatively simple and direct, does not require complicated tools or special installation skills, and is easy to install and disassemble.

[0047] 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 for suppressing ozone emission, comprising: An annular top plate, a ceramic shell, an annular bottom plate, a plurality of cathode nozzles, a plurality of ceramic tubes and a plurality of anode needles, wherein the top and the bottom of the shell are respectively connected to the top plate and the bottom plate; characterized in that: The shell has an annular partition inside, the partition divides the inner cavity of the shell into an air cavity and a hydrogen cavity, and a hydrogen pipe is arranged on the partition at the bottom of the hydrogen cavity, and the hydrogen pipe extends downward through the bottom plate; The partition is provided with a plurality of combustion tubes with internal cavities and communicating with each other up and down, the upper end of the combustion tube is located in the hydrogen cavity, the lower end of the combustion tube is located in the air cavity, a plurality of tangential air inlet holes are arranged on the side wall of the lower end of the combustion tube along the circumferential direction, and a plurality of radial hydrogen inlet holes are arranged on the side wall of the upper end of the combustion tube along the circumferential direction; The hydrogen pipe, the combustion pipe, the partition plate and the shell are an integrated ceramic structure; A plurality of nozzle mounting holes are evenly arranged on the top plate, a plurality of ceramic tube mounting holes are evenly arranged on the bottom plate, the bottom of the cathode nozzle is installed in the nozzle mounting hole, and the bottom of the cathode nozzle is embedded with the top of the combustion tube, a connecting tube with an inner diameter smaller than the inner diameter of the ceramic tube is provided at the bottom of the ceramic tube, the connecting tube is installed in the ceramic tube mounting hole and extends downward, and the upper end of the ceramic tube is embedded with the bottom of the combustion tube.

2. The burner head for suppressing ozone emission according to claim 1, characterized in that: A clamping ring is also provided at the lower end of the combustion tube, a limiting ring is provided at the lower end of the anode needle, the upper end of the anode needle extends upward through the clamping ring, and the clamping ring clamps the limiting ring and limits the limiting ring from moving upward.

3. The burner head for suppressing ozone emission according to claim 2, characterized in that: The bottom of the ceramic tube is clamped under the limiting ring and limits the limiting ring from moving downward.

4. The burner head for suppressing ozone emission according to claim 1, characterized in that: A plasma combustion channel is formed between the anode needle, the combustion tube and the cathode nozzle.

5. The burner head for suppressing ozone emission according to claim 1, characterized in that: The top plate and the bottom plate are fixedly connected to the partition plate in the ceramic shell by bolts.

6. An electric flame cooker, characterized in that: A burner head for suppressing ozone emission comprising any one of claims 1-5.

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