Burner capable of reducing ozone overflow and electric flame stove

Abstract

The invention discloses a furnace end capable of reducing ozone overflow and an electric flame stove. The furnace end comprises an upper shell, a lower shell and a plurality of plasma combustion devices. The upper shell and the lower shell are respectively provided with a plurality of mounting holes and connecting holes corresponding to the plasma combustion devices; the plasma combustion device comprises a cathode tube, a first ceramic piece, a first anode piece, a second ceramic piece and a second anode piece which are coaxially arranged. According to the invention, the dismounting and mounting procedures are simplified, and the labor cost is reduced; the first anode piece is used for ionizing gas to form initial plasma, and the second anode piece is used for secondarily exciting the initial plasma to form high-energy excited state plasma, so that the number of high-energy particles is increased, and the ionization efficiency is further improved; ozone ions O with poor stability are dissociated through secondary excitation, and ozone emission is reduced.

Description

Technical Field

[0001] The present invention particularly relates to electric flame cookers. Background Art

[0002] In today's society, electric flame cookers are becoming increasingly popular and widely used as fast and efficient cooking devices. The main operating principle of electric flame cookers is to create an arc through the electric shock of electrodes, using the Joule heat of the arc to heat the cookware. However, the ozone generated by traditional electric flame cookers has gradually attracted 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 cookers with features that can suppress ozone emissions have been developed.

[0003] For example, patent application number CN202311071564.X proposes an electric flame stove that can suppress ozone. This prior art uses a small amount of hydrogen to participate in combustion, which rapidly decomposes the ozone formed by the discharge into water mist and oxygen.

[0004] However, in actual use of this invention patent, the hydrogen tank poses a safety hazard and needs to be replaced frequently, causing trouble to users.

[0005] Furthermore, each high-voltage discharge device in this patented invention utilizes a single electrode needle to ionize the gas. The plasma rapidly flows with the airflow, failing to increase electron density, resulting in low efficiency. Even with high-power current input, the energy from this high-power input is difficult to convert into the plasma's "high-energy state" (particle excitation and dissociation states), resulting in significant losses. Furthermore, in high-power electric flame cookers, the voltage multiplier circuit applies 10,000 volts to the electrode needle and nozzle. The higher the power, the greater the current. Core components must withstand the total power stress, and prolonged high-load operation can easily lead to component damage.

[0006] At the same time, in the prior art, the installation process of the high-voltage discharge device (electrode needle, insulating cyclone, nozzle) or the preparation process of accessories is relatively complicated, resulting in a high manufacturing cost of the electric flame stove.

[0007] Therefore, the present invention aims to solve the technical problems of how to reduce ozone emissions, how to completely eliminate safety hazards, how to improve thermal efficiency, and how to reduce manufacturing costs. Summary of the Invention

[0008] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0009] A burner head for reducing ozone overflow comprises: an upper shell, a lower shell and a plurality of plasma combustion devices; the upper shell and the lower shell are respectively provided with a plurality of mounting holes and connection holes corresponding to the plasma combustion devices; The plasma combustion device comprises a coaxially arranged cathode tube, a first ceramic member, a first anode member, a second ceramic member and a second anode member; A second annular embedding groove is provided inside the bottom end of the second ceramic member, and a second limiting ring adapted to the second annular embedding groove is provided outside the bottom end of the second anode member; An annular step is provided on the outer side of the middle section of the second ceramic member, and an annular terminal is also sleeved on the outer side of the middle section of the second ceramic member, and the bottom surface of the annular terminal abuts against the upper end surface of the annular step; the first anode member is sleeved on the outer side of the upper end of the second ceramic member, and the bottom of the first anode member abuts against the lower end surface of the annular terminal; Preferably, a first annular embedding groove is provided inside the bottom end of the first ceramic member, and a first limiting ring adapted to the first annular embedding groove is provided outside the bottom end of the first anode member; Preferably, the upper end surface of the first ceramic member is provided with an annular boss, the boss is embedded in the bottom end of the cathode nozzle, and the annular edge of the upper end surface of the first ceramic member abuts against the bottom end of the cathode nozzle; Preferably, the outer side of the bottom end of the cathode nozzle is provided with a thread, and the mounting hole of the upper shell is also provided with a thread along the circumference, so that the bottom end of the cathode nozzle can be threadedly installed in the mounting hole; Preferably, an air guide hole communicating with each other is provided at the upper end of the first ceramic member; Preferably, the interior of the connecting hole is conical, and the upper end thereof is a contraction opening; Preferably, the first anode member is installed above the connecting hole, and the outer diameter of the first limiting ring is larger than the inner diameter of the shrinkage opening of the connecting hole; Preferably, the lower shell is further provided with an air duct, the other end of which is connected to an air intake fan; Preferably, the upper shell is provided with at least two positioning bolts, and the lower shell is provided with at least two bolt holes corresponding to the positioning bolts; An electric flame stove comprises any one of the above-mentioned burners for reducing ozone leakage.

[0010] Compared with the prior art, the advantages of the present invention are: The present invention does not require special tools during installation, which simplifies the installation process. In addition, when a single plasma combustion device of the furnace head fails, it is only necessary to unscrew the cathode nozzle of the faulty plasma combustion device to replace the components of the plasma combustion device. This simplifies the disassembly and installation processes during maintenance and repair, and reduces labor costs.

[0011] The present invention utilizes the first anode component to ionize gas to form initial plasma, and utilizes the second anode component to "secondarily excite" the initial plasma to form high-energy excited-state plasma, thereby increasing the number of high-energy particles and further improving the ionization efficiency.

[0012] The "secondary excitation" of the present invention causes the poorly stable ozone ions O3⁺ to dissociate, reducing ozone efflux.

[0013] The present invention outputs power to two anode components respectively through two voltage doubling circuits, disperses power pressure, and reduces the load of a single voltage doubling circuit module.

[0014] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0016] Figure 1 It is a structural sectional view of the present invention.

[0017] Figure 2 yes Figure 1 Enlarged view of circle A in the middle.

[0018] Figure 3 It is a structural schematic diagram of the upper shell and the lower shell of the present invention.

[0019] Figure 4 It is an exploded view of the plasma combustion device of the present invention. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are 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 limiting the present invention.

[0022] Furthermore, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; internal communication between two components; and wireless or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] 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.

[0024] See also Figures 1 to 4 In an embodiment of the present invention, a burner head for reducing ozone overflow includes: an upper shell 1, a lower shell 2 and a plurality of plasma combustion devices 3.

[0025] like Figure 2 and Figure 4 As shown, the plasma combustion device 3 includes a coaxially arranged cathode tube 31, a first ceramic component 32, a first anode component 33, a second ceramic component 34 and a second anode component 35; the annular gap between the head of the first anode component 33 and the inner wall of the nearest cathode tube 31 forms a first discharge zone 100 below, and the radial gap between the head of the second anode component 35 and the inner wall of the nearest cathode tube 31 forms a second discharge zone 200 above. Example

[0026] A voltage of several thousand volts is applied between the first anode element 33 and the cathode tube 31, forming a primary electric field in the first discharge region 100. As gas flows through the first discharge region 100 from below, the electric field accelerates a small amount of free electrons in the gas, colliding with neutral molecules and ionizing the gas into electrons and positive ions, generating an initial plasma.

[0027] A higher voltage (e.g., 10,000 volts) is applied between the second anode 35 and the cathode tube 31, creating a strong secondary electric field in the second discharge region 200. The initial plasma, which has passed through the first discharge region 100, flows into the second discharge region 200, causing "secondary excitation." High-frequency collisions between high-heat electrons and neutral molecules can cause more molecules to break through energy barriers and enter higher excited states, forming a high-energy excited-state plasma.

[0028] The initial plasma provides a large number of "pre-activated" charged particles, reducing the "startup energy" for secondary excitation. The energy of the secondary electric field is concentrated on increasing particle energy, rather than being consumed in initial ionization. This results in a "number of high-energy particles" produced per unit energy input that is several times greater than that of single-stage excitation. This is due to a phenomenon called an "electron avalanche effect" triggered by secondary excitation. The frequency of collisions between high-energy particles increases with concentration. A single superhot electron excites multiple molecules, which in turn excite more particles through collisions, ultimately significantly increasing the overall energy state of the plasma. Example

[0029] When air enters the first discharge region 100, the oxygen molecules O2 in the air are ionized into oxygen ions O⁺ under the strong electric field. Some of the oxygen ions O⁺ combine with some unionized oxygen molecules O2⁺ to form ozone ions O3⁺. However, the ozone ions O3⁺ are less stable and easily dissociate or react with other particles. When the ozone ions O3⁺ enter the second discharge region 200, under the action of a higher electric field, the ozone ions O3⁺ react with other surrounding ions (such as oxygen ions, nitrogen ions, and hydrogen ions) to form composite ions. The higher the intensity and energy of the ionization energy, the more complete the dissociation.

[0030] Therefore, in this embodiment, the dual anode arrangement of the present invention can effectively reduce and suppress ozone emissions. Example

[0031] The electric flame stove of the present invention provides two sets of voltage-doubling circuit modules, wherein the first voltage-doubling circuit module is electrically connected to the ring terminal 36 of the plasma combustion device 3 and provides several thousand volts of high voltage electricity to the first anode member 33; and the second voltage-doubling circuit module is electrically connected to the bottom of the second anode member 35 through an elastically rising and falling conductor connecting pin, and provides ten thousand volts of high voltage electricity to the second anode member 35.

[0032] The present invention divides the total power of the electric flame cooker into two parts, and distributes the power to the first anode member 33 and the second anode member 35 through the first voltage doubling circuit module and the second voltage doubling circuit module respectively. This not only increases the ionization effect of the two anodes, but also reduces the load of a single voltage doubling circuit module and reduces the failure rate of the voltage doubling circuit module. Example

[0033] like Figures 1 to 4 As shown, in this embodiment, the upper shell 1 and the lower shell 2 are respectively provided with a plurality of mounting holes 11 and connecting holes 21 corresponding to the plasma combustion device 3. The upper shell 1 is provided with at least two positioning bolts, and the lower shell 2 is provided with at least two bolt holes corresponding to the positioning bolts. The corresponding mounting holes 11 and connecting holes 21 are aligned, and the upper shell 1 and the lower shell 2 together form an internal cavity 300. The second anode member 35 is installed above the connection hole 21, and its second limiting ring 351 is attached to the edge of the connection hole 21; A second annular groove 341 is provided inside the bottom end of the second ceramic member 34. The upper end of the second anode member 35 passes through the second ceramic member 34 and extends upward. A second limiting ring 351 on the outer side of the bottom end of the second anode member 35 is embedded in the second annular groove 341. An annular step 342 is provided on the outer side of the middle section of the second ceramic member 34. A ring terminal 36 is also sleeved on the outer side of the middle section of the second ceramic member 34. The bottom surface of the ring terminal 36 abuts against the upper end surface of the annular step 342. One end of the ring terminal 36 is electrically connected to the first voltage multiplier circuit module in the electric flame cooker body via a wire. The first anode member 33 is sleeved on the outer side of the upper end of the second ceramic member 34, and the bottom of the first anode member 33 abuts against the lower end surface of the ring terminal 36, so that the first anode member 33 and the ring terminal 36 are electrically connected; A first annular groove 321 is provided inside the bottom end of the first ceramic member 32. The upper end of the first anode member 33 passes through the first ceramic member 32 and extends upward. A first stopper 331 on the outer side of the bottom end of the first anode member 33 is embedded in the first annular groove 321. The outer side of the bottom end of the cathode tube 31 is provided with a thread, and the mounting hole 11 of the upper shell 1 is also provided with a thread along the circumference, and the bottom end of the cathode tube 31 is threadedly installed in the mounting hole 11; An annular boss 322 is provided on the upper end surface of the first ceramic member 32. When the bottom end of the cathode tube 31 is rotatably mounted in the mounting hole 11, the boss 322 is embedded in the bottom end of the cathode tube 31, and the annular edge of the upper end surface of the first ceramic member 32 abuts against the bottom end of the cathode tube 31. After completing the above installation steps, the entire plasma combustion device 3 can be installed in the furnace head without the use of special tools. In addition, if a single plasma combustion device 3 in the furnace head fails, it is only necessary to unscrew the cathode tube 31 of the faulty plasma combustion device 3 to replace the component of the plasma combustion device 3. This simplifies the disassembly and installation procedures during maintenance and repair, reducing labor costs.

[0034] The interior of the connecting hole 21 is conical, and its upper end is a contraction opening. When the elastically rising and falling conductor connecting needle on the second voltage doubling circuit module is connected to the second anode component 35, the funnel-shaped design of the connecting hole 21 allows the connecting needle and the second anode component 35 to have calibration errors, thereby bringing convenience to the installation of the connecting needle. Example

[0035] The first ceramic member 32 has an upper end formed with an air guide hole 333 that communicates with each other. The air guide hole 333 connects the furnace cavity 300 with the first discharge area 100 and the second discharge area 200. The lower shell 2 is also provided with an air duct 22, the other end of which is connected to an intake fan 4. When the electric flame cooker is in operation, the intake fan 4 draws in external air and continuously supplies gas to the furnace cavity 300. The gas enters the first discharge area 100 and the second discharge area 200 in sequence from the air guide holes 333, and the gas forms a spiral shape to cool the cathode tube 31.

[0036] The present invention also provides an electric flame stove, comprising the burner head for reducing ozone leakage.

[0037] 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 invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

Claims

1. A burner head for reducing ozone leakage, characterized in that: include: An upper shell, a lower shell and a plurality of plasma combustion devices; the upper shell and the lower shell are respectively provided with a plurality of mounting holes and connection holes corresponding to the plasma combustion devices; The plasma combustion device comprises a coaxially arranged cathode tube, a first ceramic member, a first anode member, a second ceramic member and a second anode member; A second annular embedding groove is provided inside the bottom end of the second ceramic member, and a second limiting ring adapted to the second annular embedding groove is provided outside the bottom end of the second anode member; An annular step is provided on the outside of the middle section of the second ceramic component, and an annular terminal is also sleeved on the outside of the middle section of the second ceramic component, the bottom surface of the annular terminal abuts against the upper end surface of the annular step, the first anode component is sleeved on the outside of the upper end of the second ceramic component, and the bottom of the first anode component abuts against the lower end surface of the annular terminal.

2. The burner head for reducing ozone leakage according to claim 1, characterized in that: A first annular embedding groove is provided inside the bottom end of the first ceramic component, and a first limiting ring adapted to the first annular embedding groove is provided outside the bottom end of the first anode component.

3. The burner head for reducing ozone leakage according to claim 1, characterized in that: An annular boss is provided on the upper end surface of the first ceramic component. The boss is embedded in the bottom end of the cathode nozzle, and the annular edge of the upper end surface of the first ceramic component abuts against the bottom end of the cathode nozzle.

4. The burner head for reducing ozone leakage according to claim 1, characterized in that: The outer side of the bottom end of the cathode nozzle is provided with a thread, and the mounting hole of the upper shell is also provided with a thread along the circumference, so that the bottom end of the cathode nozzle can be threadedly installed in the mounting hole.

5. The burner head for reducing ozone leakage according to claim 1, characterized in that: An air guide hole communicating with each other from top to bottom is formed on the upper end of the first ceramic component.

6. The burner head for reducing ozone leakage according to claim 1, characterized in that: The interior of the connecting hole is conical, and the upper end thereof is a contraction opening.

7. The burner head for reducing ozone leakage according to claim 1, characterized in that: The first anode component is installed above the connecting hole, and the outer diameter of the first limiting ring is larger than the inner diameter of the shrinkage opening of the connecting hole.

8. The burner head for reducing ozone leakage according to claim 1, characterized in that: The lower shell is also provided with an air duct, and the other end of the air duct is connected to an air intake fan.

9. The burner head for reducing ozone leakage according to claim 1, characterized in that: The upper shell is provided with at least two positioning bolts, and the lower shell is provided with at least two bolt holes corresponding to the positioning bolts.

10. An electric flame cooker, characterized in that: A burner head for reducing ozone leakage according to any one of claims 1 to 9.

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