Ozone-reducing burner and electric flame cooker

Abstract

This utility model discloses a burner head and electric flame stove that reduces ozone leakage, comprising: an upper shell, a lower shell, and multiple plasma combustion devices; the upper shell and the lower shell are respectively provided with multiple mounting holes and connection holes corresponding to the plasma combustion devices; the plasma combustion device includes a cathode tube, a first ceramic component, a first anode component, a second ceramic component, and a second anode component arranged coaxially. This utility model simplifies the disassembly and installation process, reducing labor costs; this utility model 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, increasing the number of high-energy particles and further improving ionization efficiency; this utility model's "secondary excitation" causes the unstable ozone ions O₃⁺ to dissociate, reducing ozone emissions.

Description

Technical Field

[0001] This utility model specifically relates to an electric flame stove. Background Technology

[0002] In today's society, electric flame cooktops are becoming increasingly popular and widely used as a fast and efficient cooking appliance. The working principle of an electric flame cooktop is mainly based on the formation of an electric arc through electrode electrical discharge, using the Joule heat of the arc to heat the cookware. However, the ozone problem generated when using traditional electric flame cooktops has gradually attracted attention. Ozone is a strong oxidant that is harmful to the human respiratory system and eyes; long-term exposure may lead to health problems. Therefore, existing technologies have developed various electric flame cooktops with ozone emission suppression capabilities.

[0003] For example, utility model patent application number CN202311071564.X proposes an electric flame stove that can suppress ozone. This prior art involves inputting a small amount of hydrogen to participate in combustion, causing the ozone formed by the discharge to decompose rapidly, forming water mist and oxygen.

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

[0005] Furthermore, each high-voltage discharge device in this utility model patent uses a single electrode needle to ionize the gas. The plasma flows rapidly with the gas flow, which cannot increase the electron density, resulting in low efficiency. Even with a high-power current input, the energy of the high-power input is difficult to convert into the "high-energy state" (particle excited state, dissociated state) of the plasma, instead generating a large amount of loss. Moreover, in high-power electric flame stoves, the voltage multiplier circuit applies tens of thousands of volts to the electrode needle and nozzle. The higher the power, the greater the current. Its core components need to withstand the total power stress, and long-term high-load operation can easily lead to component damage.

[0006] Meanwhile, in the existing technology, the installation process or the preparation process of accessories for high-voltage discharge devices (electrode needles, insulating cyclones, nozzles) are relatively complicated, resulting in high manufacturing costs for electric flame stoves.

[0007] Therefore, this utility model 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. Utility Model Content

[0008] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0009] A burner head for reducing ozone leakage includes: an upper shell, a lower shell, and multiple plasma combustion devices; the upper shell and the lower shell are respectively provided with multiple mounting holes and connection holes corresponding to the plasma combustion devices;

[0010] The plasma combustion device includes a cathode tube, a first ceramic component, a first anode component, a second ceramic component, and a second anode component arranged coaxially.

[0011] The second ceramic part has a second annular groove inside its bottom end, and the second anode part has a second limiting ring on its outer side that matches the second annular groove.

[0012] An annular step is provided on the outer side of the middle section of the second ceramic component, and an annular terminal is also sleeved on the outer side of the middle section of the second ceramic component. The bottom surface of the annular terminal abuts against the upper surface of the annular step. The first anode component is sleeved on the outer side of the upper end of the second ceramic component, and the bottom of the first anode component abuts against the lower surface of the annular terminal.

[0013] Preferably, the bottom end of the first ceramic part is provided with a first annular groove, and the bottom end of the first anode part is provided with a first limiting ring that matches the first annular groove.

[0014] Preferably, the upper surface of the first ceramic part is provided with an annular protrusion, the protrusion is embedded inside the bottom end of the cathode nozzle, and the annular edge of the upper surface of the first ceramic part abuts against the bottom end of the cathode nozzle.

[0015] Preferably, the cathode nozzle has a thread on the outer side of its bottom end, and the mounting hole of the upper housing also has a thread along its circumference, so that the bottom end of the cathode nozzle can be threaded into the mounting hole.

[0016] Preferably, the upper end of the first ceramic component has an air guide hole that is interconnected with the upper part;

[0017] Preferably, the inside of the connecting hole is conical, and its upper end is a constricted opening;

[0018] Preferably, the first anode is mounted above the connecting hole, and the outer diameter of the first limiting ring is larger than the inner diameter of the contraction opening of the connecting hole;

[0019] Preferably, the lower housing is further provided with an air duct, and the other end of the air duct is connected to an intake fan;

[0020] Preferably, the upper housing is provided with at least two positioning bolts, and the lower housing is provided with at least two bolt holes corresponding to the positioning bolts;

[0021] An electric flame stove, comprising the burner head that reduces ozone leakage as described in any one of the above-mentioned methods.

[0022] Compared with the prior art, the advantages of this utility model are:

[0023] This invention simplifies the installation process by eliminating the need for special tools during installation. Furthermore, when a single plasma combustion device in the furnace head malfunctions, the component of the plasma combustion device can be replaced simply by unscrewing the cathode nozzle of the faulty device. This simplifies the disassembly and installation process during maintenance and repair, thereby reducing labor costs.

[0024] This invention utilizes the first anode to ionize gas and form initial plasma, and the second anode 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.

[0025] The "secondary excitation" of this invention causes the unstable ozone ions O3⁺ to dissociate, thereby reducing ozone emissions.

[0026] This invention uses two voltage multiplier circuits to output power to two anodes respectively, thereby dispersing the power pressure and reducing the load on a single voltage multiplier circuit module.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a structural cross-sectional view of the present invention.

[0030] Figure 2 yes Figure 1 A magnified view of circle A in the middle.

[0031] Figure 3 This is a schematic diagram of the upper and lower shells of this utility model.

[0032] Figure 4 This is an exploded view of the plasma combustion device of this utility model. Detailed Implementation

[0033] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Please see Figures 1-4 In this embodiment of the present invention, a burner head for reducing ozone leakage includes: an upper shell 1, a lower shell 2, and multiple plasma combustion devices 3.

[0038] like Figure 2 and Figure 4 As shown, the plasma combustion device 3 includes a cathode tube 31, a first ceramic component 32, a first anode component 33, a second ceramic component 34, and a second anode component 35 arranged coaxially; the annular gap between the head of the first anode component 33 and the inner wall of the nearest cathode tube 31 forms the lower first discharge region 100, and the radial gap between the head of the second anode component 35 and the inner wall of the nearest cathode tube 31 forms the upper second discharge region 200. Example 1

[0039] A voltage of several kilovolts is applied between the first anode 33 and the cathode tube 31, forming a primary electric field in the first discharge region 100. When the gas flows through the first discharge region 100 from below, a small number of free electrons in the gas are accelerated by the electric field, colliding with neutral molecules and ionizing the gas into electrons and positive ions, generating initial plasma.

[0040] A higher voltage (such as 10,000 volts) is applied between the second anode 35 and the cathode tube 31, and a secondary strong electric field is formed in the second discharge region 200. The initial plasma that has passed through the first discharge region 100 flows into the second discharge region 200 and undergoes "secondary excitation". The high-frequency collisions between high-heat electrons and neutral molecules can enable more molecules to break through the energy barrier and enter a higher excited state, forming a high-energy excited state plasma.

[0041] The initial plasma provides a large number of "pre-activated" charged particles, reducing the "start-up energy" of secondary excitation. The energy of the secondary electric field is concentrated on increasing particle energy rather than being consumed in initial ionization, resulting in a "number of high-energy particles" produced per unit energy input that is several times greater than that of a single-stage excitation. This is due to a "balloon avalanche effect" triggered by secondary excitation, where the collision frequency between high-energy particles increases with concentration. A single superthermal electron excites multiple molecules, which in turn excite more particles through collisions, ultimately leading to a significant increase in the overall energy state of the plasma. Example 2

[0042] When air enters the first discharge zone 100, oxygen molecules O2 in the air are ionized into oxygen ions O⁺ under a strong electric field. Some oxygen ions O⁺ combine with some unionized oxygen molecules O2⁺ to form ozone ions O3⁺. However, ozone ions O3⁺ are relatively unstable and are prone to dissociation or reaction with other particles. When ozone ions O3⁺ enter the second discharge zone 200, under the influence of a higher electric field, ozone ions O3⁺ react with other surrounding ions (such as oxygen ions, nitrogen ions, and hydrogen ions) to generate composite ions. The higher the intensity and energy of the ionization, the more complete the dissociation.

[0043] Therefore, in this embodiment, the dual-anode configuration of the present invention can effectively reduce and suppress ozone emissions. Example 3

[0044] The electric flame stove of this utility model provides two sets of voltage multiplier circuit modules. The first voltage multiplier circuit module is electrically connected to the annular terminal 36 of the plasma combustion device 3 and provides several thousand volts of high voltage to the first anode 33. The second voltage multiplier circuit module is electrically connected to the bottom of the second anode 35 through a flexible and lifting conductor connecting pin and provides tens of thousands of volts of high voltage to the second anode 35.

[0045] This invention divides the total power of the electric flame stove into two parts, which are distributed to the first anode 33 and the second anode 35 through the first voltage multiplier circuit module and the second voltage multiplier circuit module, respectively. This not only increases the ionization effect of the two anodes, but also reduces the load on a single voltage multiplier circuit module and reduces the failure rate of the voltage multiplier circuit module. Example 4

[0046] like Figures 1-4 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, so that the corresponding mounting holes 11 and connecting holes 21 are aligned and aligned. The upper shell 1 and the lower shell 2 together form a furnace cavity 300 with an internal cavity.

[0047] The second anode 35 is installed above the connecting hole 21, and its second limiting ring 351 fits against the edge of the connecting hole 21.

[0048] The second ceramic part 34 has a second annular groove 341 inside its bottom end. The upper end of the second anode part 35 passes through the interior of the second ceramic part 34 and extends upward. The second limiting ring 351 on the outer side of the bottom end of the second anode part 35 is embedded in the second annular groove 341.

[0049] An annular step 342 is provided on the outer side of the middle section of the second ceramic component 34. An annular terminal 36 is also sleeved on the outer side of the middle section of the second ceramic component 34. The bottom surface of the annular terminal 36 abuts against the upper surface of the annular step 342. One end of the annular terminal 36 is electrically connected to the first voltage multiplier circuit module inside the electric flame stove through a wire.

[0050] The first anode 33 is sleeved on the outer side of the upper end of the second ceramic part 34, and the bottom of the first anode 33 abuts against the lower end face of the annular terminal 36, so that the first anode 33 and the annular terminal 36 are electrically connected.

[0051] The first ceramic component 32 has a first annular groove 321 inside its bottom end. The upper end of the first anode component 33 passes through the interior of the first ceramic component 32 and extends upward. The first limiting ring 331 on the outer side of the bottom end of the first anode component 33 is embedded in the first annular groove 321.

[0052] The cathode tube 31 has a thread on the outer side of its bottom end, and the mounting hole 11 of the upper housing 1 also has a thread along its circumference, so that the bottom end of the cathode tube 31 is threaded into the mounting hole 11.

[0053] The upper surface of the first ceramic component 32 is provided with an annular boss 322. When the bottom end of the cathode tube 31 is rotated and installed in the mounting hole 11, the boss 322 is embedded inside the bottom end of the cathode tube 31, and the annular edge of the upper surface of the first ceramic component 32 abuts against the bottom end of the cathode tube 31.

[0054] After completing the above installation steps, the entire plasma combustion device 3 can be installed inside the furnace head without the need for special tools. Furthermore, if a single plasma combustion device 3 in the furnace head malfunctions, the component can be replaced simply by unscrewing the cathode tube 31 of the faulty device. This simplifies the disassembly and installation process during maintenance and repair, reducing labor costs.

[0055] The inside of the connecting hole 21 is conical, and its upper end is a contracted opening. When the elastically lifting conductor connecting pin on the second voltage multiplier circuit module is connected to the second anode 35, the funnel-shaped design of the connecting hole 21 allows for calibration errors between the connecting pin and the second anode 35, thus making it convenient to install the connecting pin. Example 5

[0056] The upper end of the first ceramic component 32 is provided with an air guide hole 333 that is interconnected with the upper and lower parts, and the air guide hole 333 connects the furnace cavity 300 with the first discharge zone 100 and the second discharge zone 200.

[0057] The lower housing 2 is also provided with an air duct 22. The other end of the air duct 22 is connected to the air intake fan 4. When the electric flame stove is in operation, the air intake fan 4 draws in external air and continuously supplies gas to the furnace cavity 300. The gas enters the first discharge zone 100 and the second discharge zone 200 sequentially from the air guide hole 333, and the gas forms a spiral shape to cool the cathode tube 31.

[0058] This utility model also proposes an electric flame stove, including the aforementioned burner head that reduces ozone leakage.

[0059] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A burner head that reduces ozone leakage, characterized in that, The system includes: an upper shell, a lower shell, and multiple plasma combustion devices. The upper shell and the lower shell are respectively provided with multiple mounting holes and connection holes corresponding to the plasma combustion devices. The plasma combustion device includes a cathode tube, a first ceramic component, a first anode component, a second ceramic component, and a second anode component arranged coaxially. The second ceramic part has a second annular groove inside its bottom end, and the second anode part has a second limiting ring on its outer side that matches the second annular groove. An annular step is provided on the outer side of the middle section of the second ceramic component, and an annular terminal is also sleeved on the outer side of the middle section of the second ceramic component. The bottom surface of the annular terminal abuts against the upper surface of the annular step. The first anode component is sleeved on the outer side of the upper end of the second ceramic component, and the bottom of the first anode component abuts against the lower surface of the annular terminal.

2. The burner head for reducing ozone leakage according to claim 1, characterized in that, The first ceramic part has a first annular groove inside its bottom end, and the first anode part has a first limiting ring on its outer side that matches the first annular groove.

3. The burner head for reducing ozone leakage according to claim 1, characterized in that, The upper surface of the first ceramic component is provided with an annular protrusion, which is embedded inside the bottom end of the cathode tube, and the annular edge of the upper surface of the first ceramic component abuts against the bottom end of the cathode tube.

4. The burner head for reducing ozone leakage according to claim 1, characterized in that, The cathode tube has a thread on the outer side of its bottom end, and the mounting hole of the upper shell also has a thread along its circumference, so that the bottom end of the cathode tube can be threaded into the mounting hole.

5. The burner head for reducing ozone leakage according to claim 1, characterized in that, The upper end of the first ceramic component has an air guide hole that is open to both the upper and lower parts.

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

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

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

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

10. An electric flame stove, characterized in that, The burner head that reduces ozone leakage, as described in any one of claims 1-9.

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