Burner head and electric flame stove

Abstract

The present invention discloses a stove head, including a stove head inner cavity formed by an upper shell and a lower shell, and a plurality of plasma burners are arranged on the stove head. The present invention provides a fire-spraying hole on the wall of the ceramic nozzle for allowing the plasma to be normally sprayed around the furnace to achieve uniform heating of the pot body; the top of the ceramic nozzle of the present invention adopts a closed setting, which effectively prevents the soup of the frying pan from overflowing and entering the plasma burner; most of the components of the plasma burner of the present invention adopt a butt-joint manner, which not only provides a stable and reliable support for the entire internal structure of the plasma burner, but also ensures that each component will not be displaced or shaken during operation; the butt-joint manner of the upper end of the anode needle and the top end of the ceramic nozzle of the present invention, and the detachable spiral connection manner of the upper end of the cathode ring and the lower end of the ceramic nozzle, are combined with each other, which brings convenience to the installation, disassembly, reassembly, and later maintenance and cleaning in production, saving labor costs and unnecessary processes.

Description

Technical Field

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

[0002] The electric flame stove is a new type of stove that uses electrical energy converted into plasma flame to heat the pot. This heating method solves the risk of gas leakage and explosion in existing gas stoves.

[0003] For example, the utility model patent with authorization announcement number CN220582508U is an electric flame stove with a pressurized flamethrower. A nozzle mesh is set by the pressurized flamethrower, and the plasma flame ejected from multiple flame holes on the nozzle mesh heats the upper pot more evenly.

[0004] However, in the above-mentioned patent, the plasma flame still sprays outwards to directly heat the pot, so that the pot is heated locally, while other parts of the bottom of the pot are less heated, resulting in uneven heating and poor cooking effect.

[0005] The above patent still has many defects. For example, when liquid such as soup or water in the pot overflows, the soup can easily penetrate into the stove through the flame hole, causing a circuit short circuit.

[0006] In addition, when the arc generating device needs to be repaired or cleaned, the entire furnace head needs to be disassembled, which brings inconvenience to maintenance personnel or users. 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 furnace head comprises: an upper shell, a lower shell and a plurality of plasma burners;

[0009] The upper shell and the lower shell together form a furnace head inner cavity;

[0010] The plasma burner comprises a ceramic nozzle, a ceramic cyclone tube, an anode needle and a cathode ring which is arranged on the upper shell and communicates with each other from top to bottom;

[0011] The top surface of the ceramic cyclone tube abuts against the lower end of the cathode ring, and the bottom surface of the ceramic cyclone tube abuts against the lower shell; the top end of the ceramic nozzle is closed, and the upper end of the cathode ring is detachably spirally connected to the lower end of the ceramic nozzle;

[0012] The ceramic cyclone tube wall is provided with a tangentially arranged air inlet hole, so that the gas enters the plasma burner to form a spiral airflow, and the ceramic nozzle wall is provided with a flame injection hole;

[0013] Preferably, the lower end of the anode needle abuts against the bottom of the ceramic cyclone tube, and the upper end of the anode needle abuts against the top of the ceramic nozzle;

[0014] Preferably, a ring-shaped discharge electrode is provided in the middle section of the anode needle, and a high voltage difference is generated between the discharge electrode and the cathode ring to form an electrode discharge phenomenon;

[0015] Preferably, the upper shell and the lower shell are both made of stainless steel and fixed by bolts, and the lower shell is provided with a plurality of fixing columns, which are fixedly connected and electrically connected to the cathode of the circuit board below;

[0016] Preferably, an insulating tube is provided below the bottom of the ceramic cyclone tube, and the interior of the insulating tube is interconnected with the interior of the ceramic cyclone tube;

[0017] Preferably, the anode needle is electrically connected to the anode of the circuit board below through the inside of the insulating tube.

[0018] Preferably, the flame-spraying hole is tangentially arranged on the tube wall of the ceramic nozzle, and the tangential direction of the flame-spraying hole is opposite to the tangential direction of the air inlet hole, so that the ejection direction of the flame-spraying hole is consistent with the rotation direction of the spiral airflow.

[0019] The present invention also provides an electric flame cooker, comprising any one of the burner heads described above.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] The present invention provides a fire-spraying hole on the wall of the ceramic nozzle for allowing the plasma to be normally sprayed around the furnace to achieve uniform heating of the pot body;

[0022] The top of the ceramic nozzle of the present invention is closed, which effectively prevents the soup from the frying pan from overflowing and entering the plasma burner.

[0023] Most of the components of the plasma burner of the present invention adopt abutment mode, which not only provides stable and reliable support for the internal structure of the entire plasma burner, but also ensures that each component will not be displaced or shaken during operation;

[0024] The abutment mode between the upper end of the anode needle and the top end of the ceramic nozzle and the detachable spiral connection mode between the upper end of the cathode ring and the lower end of the ceramic nozzle of the present invention are combined with each other, which brings convenience to installation, disassembly, reassembly and later maintenance and cleaning in production, saving labor costs and unnecessary processes.

[0025] 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

[0026] 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.

[0027] Figure 1 It is a stereogram of the plasma burner of the present invention.

[0028] Figure 2 It is a front view of a plasma burner of the present invention.

[0029] Figure 3 yes Figure 2 Cross-section along line AA.

[0030] Figure 4 yes Figure 2 Cross-section along line BB.

[0031] Figure 5 It is a cross-sectional view of the plasma burner of the present invention.

[0032] Figure 6 It is a cross-sectional view of a furnace head of the present invention. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] See also Figure 6 In an embodiment of the present invention, a furnace head includes a furnace head inner cavity formed by an upper shell 10 and a lower shell 20, and a plurality of plasma burners 30 are arranged on the furnace head.

[0038] See also Figure 1 to Figure 5 In the embodiment of the present invention, the plasma burner 30 includes a ceramic nozzle 31, a ceramic cyclone tube 33, an anode needle 34 and a cathode ring 32 which is arranged on the upper shell 10 and communicates with each other up and down; the cathode ring 32 can be a stainless steel semi-finished product in which the cathode ring 32 and the upper shell 10 are integrated during the manufacturing process. Since it is formed in one time, the assembly error that may occur in the later assembly process is avoided. The cathode ring 32 can also be the cathode ring 32 abutting against the mounting hole of the upper shell 10.

[0039] In the embodiment of the present invention, the top surface of the ceramic cyclone tube 33 abuts against the lower end of the cathode ring 32, and the bottom surface of the ceramic cyclone tube 33 abuts against the lower shell 20; the top end of the ceramic nozzle 31 is a closed setting, the lower end of the anode needle 34 abuts against the bottom of the ceramic cyclone tube 33, and the upper end of the anode needle 34 abuts against the top of the ceramic nozzle 31.

[0040] This tight abutment not only provides stable and reliable support for the entire internal structure of the plasma burner 30, but also ensures that each component will not be displaced or shaken during operation.

[0041] The present invention further proposes that the upper end of the cathode ring 32 is detachably spirally connected to the lower end of the ceramic nozzle 31. This flexible installation structure of abutment and detachable spiral connection greatly reduces the difficulty of installation.

[0042] When a component of the plasma burner 30 fails, maintenance personnel can quickly locate and disassemble the failed component for replacement or maintenance due to the flexible connection between the components. At the same time, it is convenient for users to clean the inside of the plasma burner 30.

[0043] Therefore, the abutment between the upper end of the anode needle 34 and the top end of the ceramic nozzle 31, and the detachable spiral connection between the upper end of the cathode ring 32 and the lower end of the ceramic nozzle 31, are combined with each other, which brings convenience to installation, disassembly, reassembly, and later maintenance and cleaning during production, saving labor costs and unnecessary processes.

[0044] In the embodiment of the present invention, the top of the ceramic nozzle 31 of the present invention is closed, which effectively prevents the soup from the frying pan from overflowing and entering the plasma burner 30, thereby ensuring the stable formation of the electric field and the continuous generation of plasma, thereby ensuring the stable operation of the burner head;

[0045] In the embodiment of the present invention, a flame injection hole 311 is provided on the wall of the ceramic nozzle 31 to allow the plasma to be normally injected around the furnace. The plasma flame has buoyancy in the air and moves upward to heat the bottom of the pot. This injection method disperses the heat and achieves uniform heating of the pot body. This not only avoids local overheating of the pot body, ensures that the food is heated evenly, improves the cooking quality and taste, but also prevents the food from being burnt due to overheating.

[0046] See also Figure 2 to Figure 5 In the embodiment of the present invention, the gas enters the plasma burner 30 from the air inlet hole 331 tangentially arranged on the wall of the ceramic cyclone tube 33. Due to the tangential arrangement of the air inlet hole 331, the gas forms a spiral airflow after entering. The spiral airflow increases the residence time of the gas in the generator, allowing the gas to fully interact with the electric field, which is conducive to the generation and stability of plasma; the rotational motion of the spiral airflow can also cool the various components of the plasma burner.

[0047] In the embodiment of the present invention, under the action of the electric field, the gas is ionized to form plasma. The plasma moves along the ceramic nozzle 31 to the flame-spraying hole 311. The tangential direction of the flame-spraying hole 311 on the wall of the ceramic nozzle 31 is opposite to the tangential direction of the air inlet hole 331, so that the ejection direction of the flame-spraying hole 311 is consistent with the rotation direction of the spiral airflow. Such a design enables the plasma to be ejected in a more stable and concentrated manner with the help of the aerodynamic force of the spiral airflow when it is ejected.

[0048] In the embodiment of the present invention, the annular discharge electrode 341 disposed in the middle of the anode needle 34 increases the surface area of ​​the electrode, making the discharge process more uniform and stable. Uniform discharge can avoid the problem of unstable plasma caused by local overheating or uneven discharge, thereby ensuring the stability and reliability of the furnace head operation.

[0049] In the next embodiment, the upper shell 10 and the lower shell 20 are both made of stainless steel and fixed by bolts. The lower shell 20 is provided with a plurality of fixing columns 21, which are fixedly connected and electrically connected to the cathode of the circuit board below.

[0050] In the next embodiment, an insulating tube 332 is provided below the bottom of the ceramic cyclone tube 33 , and the interior of the insulating tube 332 is interconnected with the interior of the ceramic cyclone tube 33 ; the anode needle 34 is electrically connected to the anode of the circuit board below through the interior of the insulating tube 332 .

[0051] 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, characterized in that: include: An upper shell, a lower shell and a number of plasma burners; The upper shell and the lower shell together form a furnace head inner cavity; The plasma burner comprises a ceramic nozzle, a ceramic cyclone tube, an anode needle and a cathode ring which is arranged on the upper shell and communicates with each other from top to bottom; A ring-shaped discharge electrode is provided in the middle section of the anode needle, and a high voltage difference is generated between the discharge electrode and the cathode ring to form an electrode discharge phenomenon; The top surface of the ceramic cyclone tube abuts against the lower end of the cathode ring, and the bottom surface of the ceramic cyclone tube abuts against the lower shell; the top end of the ceramic nozzle is closed, and the upper end of the cathode ring is detachably spirally connected to the lower end of the ceramic nozzle; The ceramic cyclone tube wall is provided with a tangentially arranged air inlet hole, so that gas enters the plasma burner to form a spiral airflow. The ceramic nozzle tube wall is provided with a flame-spraying hole, which is tangentially arranged on the tube wall of the ceramic nozzle, and the tangential direction of the flame-spraying hole is opposite to the tangential direction of the air inlet hole, so that the ejection direction of the flame-spraying hole is consistent with the rotation direction of the spiral airflow. When the plasma is ejected, it can be ejected in a more stable and concentrated manner with the help of the aerodynamic force of the rotating spiral airflow.

2. The burner head according to claim 1, characterized in that: The lower end of the anode needle abuts against the bottom of the ceramic cyclone tube, and the upper end of the anode needle abuts against the top of the ceramic nozzle.

3. The burner head according to claim 1, characterized in that: The upper shell and the lower shell are both made of stainless steel and are fixed by bolts. The lower shell is provided with a plurality of fixing columns, which are fixedly connected and electrically connected to the cathode of the circuit board below.

4. The burner head according to claim 1, characterized in that: An insulating tube is arranged below the bottom of the ceramic cyclone tube, and the interior of the insulating tube is communicated with the interior of the ceramic cyclone tube.

5. The burner head according to claim 4, characterized in that: The anode needle is electrically connected to the anode of the circuit board below through the inside of the insulating tube.

6. The burner head according to claim 1, characterized in that: The flame-spraying holes are tangentially arranged on the tube wall of the ceramic nozzle, and the tangential direction of the flame-spraying holes is opposite to the tangential direction of the air inlet holes, so that the ejection direction of the flame-spraying holes is consistent with the rotation direction of the spiral airflow.

7. An electric flame cooker, characterized in that: The invention comprises the burner head according to any one of claims 1 to 6.

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