Electric flame stove capable of effectively inhibiting ozone overflow

Abstract

The invention discloses an electric flame stove capable of effectively inhibiting ozone overflow. The electric flame stove comprises a stove body, a burner mounted on the stove body and a hydrogen pipe, according to the plasma burner, the electrodes are adopted for spraying hydrogen, so that the hydrogen can be quickly diffused in the plasma burner and is in full contact with ozone generated by discharging, the ozone is timely converted into harmless substances such as oxygen and the like, ozone overflow is reduced to the maximum extent, and the risk caused by insufficient combustion of the hydrogen is also reduced; according to the invention, the electrodes are adopted to inject hydrogen, so that additional ejectors are reduced, the manufacturing cost is reduced, and the structure of the electric flame stove is simplified; according to the invention, the electrodes are used for spraying hydrogen, so that the plasma obtains higher temperature, and the plasma spraying speed and spraying distance are improved; according to the furnace end, due to the simplified structure and the simple mounting and dismounting mode, the mounting and maintenance difficulty and workload are greatly reduced.

Description

Technical Field

[0001] The invention relates to an electric flame cooker which can effectively inhibit ozone spillage, 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 the electric shock of electrodes, and use the Joule heat of the arc to heat the pot. However, the problem of ozone 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.

[0003] Therefore, developing an electric flame stove that can eliminate or suppress ozone is a technical problem that urgently needs to be solved. In the prior art, the invention patent with application number CN202311071564.X proposes an electric flame stove that can suppress ozone. The ejector of the patent connects the electric valve and the hydrogen tank through a conduit. The ejector is also provided with a number of injection holes for spraying hydrogen. By adding hydrogen and ozone to mix and burn, ozone is effectively eliminated or suppressed. The hydrogen ejector in the furnace of this invention faces challenges. Long-term high temperature may cause the ejector to deform or break, which will cause hydrogen leakage and easily cause major accidents. Even if the ejector uses better high-temperature resistant materials, the high temperature of the plasma will also affect the service life of the ejector, and there is also a risk of leakage in the end.

[0004] Therefore, the invention patent with application number CN202410719922.1 proposes an electric flame stove that suppresses ozone emissions. The ejector of the invention is installed in the annular channel between the back of the inner furnace ring and the outer furnace ring, so that the ejector is not directly exposed to the high temperature of the plasma jet, and its components will not be affected by extreme temperatures, eliminating safety hazards and helping to extend the service life of the ejector; at the same time, this solution effectively dilutes the ozone emitted by the electric flame stove in working state. This invention solves the problem of partial hydrogen leakage, but the hydrogen combustion generated in the outer furnace ring heats the outer ring of the pot bottom, making the outer ring of the pot lacking water or oil easy to burn, while the food that needs to be heated (stir-fried) in the center of the pot fails to get enough heat.

[0005] The two existing technical solutions still have problems: hydrogen is introduced into the furnace in a larger space, the contact and reaction between hydrogen and ozone are relatively inefficient, resulting in incomplete combustion, causing some ozone to overflow without being eliminated in time, and increasing the risk of hydrogen leakage. Summary of the invention

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] An electric flame stove that effectively inhibits ozone spillage comprises: a stove body, a burner installed on the stove body, and a hydrogen pipe; The furnace head comprises a furnace head shell with an internal cavity and a plurality of plasma burners installed in the furnace head shell; The plasma burner is composed of a flame-spraying tube, a ceramic tube and an electrode which are coaxially arranged; The ceramic tube has a large diameter at the upper end and a small diameter at the lower end, and a plurality of tangential holes are arranged on the tube wall at the upper end; The electrode is a hollow structure with a large diameter at the upper end and a small diameter at the lower end, and its lower end is installed at the lower end of the ceramic tube; The lower end of the electrode penetrates the lower end of the ceramic tube, and the end of the electrode is connected to the hydrogen pipe, and is connected to the small hydrogen tank through the hydrogen pipe; the top surface of the head end of the electrode is closed, and the head end tube wall is provided with a plurality of spray holes; Preferably, the convex ring at the lower end of the flame spraying tube abuts against the top of the burner shell, and the upper end of the flame spraying tube passes through the top of the burner shell and extends upward; Preferably, the flame-spraying tube is in a tapered shape with a gradually shrinking upper end; Preferably, the bottom surface of the flame-spraying tube abuts against the top surface of the ceramic tube; the upper end of the ceramic tube abuts against the bottom end of the burner shell, and the lower end of the ceramic tube passes through the bottom end of the burner shell and extends downward; Preferably, the housing is also provided with an air intake fan; Preferably, the upper end of the electrode abuts against the bottom of the upper end of the ceramic tube, and the end of the electrode is threadedly fixed to the hydrogen tube, so that the electrode is fixed to the lower end of the ceramic tube.

[0008] Compared with the prior art, the advantages of the present invention are: The present invention uses an electrode to spray hydrogen, so that the hydrogen can quickly diffuse in the plasma burner and fully contact with the ozone generated by the discharge, and timely convert the ozone into harmless substances such as oxygen, thereby minimizing ozone spillage and reducing the risk of incomplete combustion of hydrogen. The present invention adopts electrodes to spray hydrogen, which reduces the need for an additional ejector, reduces manufacturing costs, and simplifies the structure of the electric flame cooker. The present invention uses electrodes to spray hydrogen, so that the plasma reaches a higher temperature, thereby increasing the plasma spray speed and spray distance; The simplified structure and simple installation and disassembly method of the burner head of the present invention greatly reduce the difficulty and workload of installation and maintenance.

[0009] 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

[0010] 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.

[0011] Figure 1 It is a cross-sectional view of the present invention.

[0012] Figure 2 It is a perspective view of the present invention.

[0013] Figure 3 It is a stereogram of the plasma burner of the present invention.

[0014] Figure 4 It is an exploded view of the plasma burner of the present invention.

[0015] Figure 5 It is a cross-sectional view of the plasma burner of the present invention. DETAILED DESCRIPTION

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] See also Figure 1 to Figure 4 In an embodiment of the present invention, an electric flame stove that effectively inhibits ozone spillage includes: a stove body 1, a burner 2 installed on the stove body 1, and a hydrogen pipe 3; The furnace head 2 comprises a furnace head shell 20 with an internal cavity and a plurality of plasma burners 200 installed in the furnace head shell 20; like Figure 3~Figure 5 As shown, the plasma burner 200 comprises a flame-spraying tube 210, a ceramic tube 220 and an electrode 230 which are coaxially arranged; The ceramic tube 220 has a large diameter at the upper end and a small diameter at the lower end, and a plurality of tangential holes 221 are provided on the tube wall at the upper end, so that the external gas entering from the tangential holes 221 forms a specific cyclone in the ceramic tube 220, thereby increasing the gas residence time, allowing the gas to be fully ionized to generate plasma, and maintaining a high energy density and stability after generation.

[0021] The hollow structure of the electrode 230 provides a dedicated hydrogen delivery channel, from the hydrogen pipe 3 connected at the end to the nozzle 231 at the head end, forming a relatively closed and stable hydrogen delivery path.

[0022] The gradual structure of the electrode 230 with a large diameter at the upper end and a small diameter at the lower end allows the hydrogen to maintain a certain flow rate and pressure in the small diameter part at the lower end when flowing inside the electrode 230. After entering the large diameter part at the upper end, there is a buffer space, allowing the hydrogen to be more evenly dispersed.

[0023] The multiple spray holes 231 arranged on the pipe wall at the head end further refine the hydrogen into multiple uniform airflows for spraying out, thereby ensuring that the hydrogen can be distributed in a relatively uniform state when entering the plasma region in the plasma burner 200 .

[0024] Hydrogen is ejected from the spray hole 231 of the electrode 230 and hits the wall of the flame-spraying tube 210 , and needs to be fully mixed with the spiral plasma in the plasma burner 200 and chemically combusted, and ozone is promptly converted into harmless substances such as oxygen during the combustion process.

[0025] This structure of the electrode 230 ensures that hydrogen can efficiently participate in the reaction with ozone, minimizes the situation where ozone overflows from the burner 200 without being processed, improves the effect of ozone suppression, and prevents hydrogen from escaping and leaking.

[0026] The specific working principle of the present invention is: After the power of the plasma burner 200 is turned on, a high voltage is applied between the positive and negative electrodes to form a strong electric field. Under the action of the strong electric field, the gas molecules in the burner 200 are ionized, causing the atoms in the gas to lose or gain electrons, forming a plasma containing a large number of electrons, ions and neutral particles. This plasma has extremely high energy and activity, and the temperature can reach thousands or even tens of thousands of degrees.

[0027] At the same time, hydrogen from the small hydrogen tank 5 is transported to the lower end of the electrode 230 through the hydrogen pipe 3. Since the electrode 230 is a hollow structure, the hydrogen can be smoothly transmitted upward along the hollow channel. After reaching the head end of the electrode 230, the hydrogen is blocked by the closed top surface of the head end and can only be ejected outward from the multiple spray holes 231 on the head end tube wall.

[0028] The structural design of the electrode 230 with a large diameter at the upper end and a small diameter at the lower end has multiple advantages. On the one hand, the small diameter at the lower end is conducive to close connection with the hydrogen pipe 3, ensuring stable hydrogen transportation and reducing the risk of leakage; on the other hand, the large diameter at the upper end provides a buffer space for hydrogen, so that the hydrogen can be more evenly distributed inside the electrode 230 before being ejected, thereby ensuring that when the hydrogen is ejected from the nozzle 231, it can enter the plasma reaction area with a relatively uniform flow rate, flow rate and angle.

[0029] The upper end wall of the ceramic tube 220 is provided with a plurality of tangential holes 221, and external gas enters the annular space between the ceramic tube 220 and the electrode 230 through the tangential holes 221, forming a cyclone, and the rotating plasma meets and fully mixes with the hydrogen gas ejected from the nozzle 231 of the electrode 230. In the plasma environment, the hydrogen gas of the mixed gas can efficiently react chemically with the ozone generated by the discharge of the electrode 230, and the reducing property of the hydrogen gas is used to convert the ozone into harmless substances such as oxygen, thereby achieving the effect of suppressing the overflow of ozone.

[0030] The hydrogen burns in the plasma burner 200, ensuring that the electric flame cooker continuously and efficiently generates heat for concentrated spraying, and heats the effective heating position in the center of the pot bottom. During the whole process, the unique structural design of the electrode 230 not only ensures the accurate supply and efficient use of hydrogen, but also cooperates with the ceramic tube 220 and other components to optimize the gas mixing and reaction environment, improve the comprehensive performance of the electric flame cooker, and effectively prevent hydrogen leakage and ozone spillage.

[0031] The flame-spraying tube 210 is a tapered tube with a gradually contracting upper end. According to the principle of fluid mechanics, the gradual decrease in the cross-sectional area of ​​the tube will accelerate the gas flow rate. The combustion of hydrogen increases the energy and temperature of the plasma. The higher energy and temperature make the flame generated by the plasma combustion more concentrated and powerful. In addition, the contraction design of the flame-spraying tube 210 allows the mixed flame to be ejected through the flame-spraying tube 210 at a faster speed.

[0032] The housing 20 is also provided with an air intake fan 4 , which can introduce external air into the plasma burner 200 to replenish the gas inside the plasma burner 200 .

[0033] In the embodiment of the present invention, the burner head 2 of the present invention has a relatively simple structure and is also easy to install: The electrode 230 is installed in a manner in which the upper end abuts against the bottom of the upper end of the ceramic tube 220 and the end is threadedly fixed to the hydrogen tube 3. This not only ensures the convenience of installation of the electrode 230, but also when the electrode 230 needs to be maintained or replaced, it is only necessary to reversely loosen the threaded connection between the end of the electrode 230 and the hydrogen tube 3 to remove the electrode 230 from above the flamethrower 210. The whole process is relatively simple and direct, and there is no need to perform large-scale disassembly operations on the entire furnace head 2, which greatly reduces the difficulty and workload of maintenance.

[0034] The convex ring at the lower end of the flame-spraying tube 210 abuts against the top of the burner shell 20, and the upper end of the flame-spraying tube 210 passes through the top of the burner shell 20 and extends upward; the bottom surface of the flame-spraying tube 210 abuts against the top surface of the ceramic tube 220; the upper end of the ceramic tube 220 abuts against the bottom of the burner shell 20, and the lower end of the ceramic tube 220 passes through the bottom of the burner shell 20 and extends downward. The flame-spraying tube 210 and the ceramic tube 220 are installed in an abutting manner. After the abutting is completed, the flame-spraying tube 210 and the ceramic tube 220 are finally fixed by the pressing of the burner shell 20. This method cleverly integrates the various components into a stable whole.

[0035] 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. An electric flame stove that effectively inhibits ozone spillage, comprising: A stove body, a burner installed on the stove body, and a hydrogen pipe; characterized in that: The furnace head comprises a furnace head shell with an internal cavity and a plurality of plasma burners installed in the furnace head shell; The plasma burner is composed of a flame-spraying tube, a ceramic tube and an electrode which are coaxially arranged; The ceramic tube has a large diameter at the upper end and a small diameter at the lower end, and a plurality of tangential holes are arranged on the tube wall at the upper end; The electrode is a hollow structure with a large diameter at the upper end and a small diameter at the lower end, and its lower end is installed at the lower end of the ceramic tube; The lower end of the electrode penetrates the lower end of the ceramic tube, and the end of the electrode is connected to the hydrogen pipe, and is connected to a small hydrogen tank through the hydrogen pipe; the top surface of the head end of the electrode is closed, and a plurality of spray holes are arranged on the head end tube wall.

2. The electric flame cooker for effectively suppressing ozone spillage according to claim 1, characterized in that: The convex ring at the lower end of the flame spraying tube abuts against the top end of the burner head shell, and the upper end of the flame spraying tube passes through the top end of the burner head shell and extends upward.

3. The electric flame cooker for effectively suppressing ozone leakage according to claim 2, characterized in that: The flame-spraying tube is in a cone shape with a gradually contracting upper end.

4. The electric flame cooker for effectively suppressing ozone leakage according to claim 3, characterized in that: The bottom surface of the flame-spraying tube abuts against the top surface of the ceramic tube; the upper end of the ceramic tube abuts against the bottom end of the burner shell, and the lower end of the ceramic tube passes through the bottom end of the burner shell and extends downward.

5. The electric flame cooker for effectively suppressing ozone leakage according to claim 1, characterized in that: The shell is also provided with an air suction fan.

6. The electric flame cooker for effectively suppressing ozone spillage according to claim 1, characterized in that: The upper end of the electrode abuts against the bottom of the upper end of the ceramic tube, and the end of the electrode is threadedly fixed to the hydrogen tube, so that the electrode is fixed to the lower end of the ceramic tube.

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