Plasma burner and burner head of electric flame stove

Abstract

The present invention discloses a plasma burner, comprising a flamethrower tube, a first ceramic tube, a second ceramic tube, a third ceramic tube, and an electrode needle installed inside the plasma burner. The present invention simplifies the production process, adopts a direct mold forming process, omits the steps of burying and pulling out the iron needle, greatly shortens the production cycle, creates favorable conditions for large-scale production, and avoids defective products caused by pulling out the needle, reduces material waste, and further reduces production costs; the present invention completely eliminates the risk of ventilation slot blockage, ensures that the ventilation slot is unobstructed, and the stable rotating airflow helps efficient plasma generation; the present invention has a simple structural connection method, and is easy to assemble through the sleeve connection and interlocking between components and the clamping and fixing of the shell, thereby improving installation efficiency.

Description

Technical Field

[0001] The invention relates to a plasma burner, in particular to an electric flame cooker. Background Art

[0002] The electric flame stove is a new type of kitchen appliance that uses the technology of electrode needle discharge to ionize gas, converting electrical energy into heat energy to heat food. As a product of new technology, technicians in this field strive to reduce production costs through creative technical improvements.

[0003] For example, the invention patent with authorization number CN118532725B proposes an electric flame stove burner head that prevents electromagnetic external radiation and has a strong structure. The electrode needle is stably fixed between the first ceramic tube and the second ceramic tube by a clamping and abutting method, and does not require threaded connection or other connection methods. The simple structure and simple process reduce the material cost and labor cost of production.

[0004] However, in actual mass production, this existing technology still has many problems. For example, in the mass production of ceramic tubes, in addition to the ceramic tube mold, it is also necessary to pre-embed iron needles in the mold for reserving air guide grooves. After the ceramic blank is air-dried and shaped, the iron needles need to be pulled out and then fired. This process is relatively complicated and requires manual needle pulling, which invisibly increases labor costs. In addition, the air guide groove is easily blocked during the needle pulling process.

[0005] Another example is the patent with the authorization number CN221403136U, which proposes a rotating plasma arc electric flame stove burner head, which can directly use a mold to produce a ceramic blank, and then air-dry and fire the blank to make a finished ceramic tube, which simplifies the manufacturing process of the ceramic tube and saves manufacturing time and labor costs. However, the design of the inclined groove extending from the bottom to the top surface of the circumferential wall of the ceramic tube, due to the excessive size of the inclined groove, when the gas enters the inside of the ceramic tube, the flow rate is reduced, and the ceramic tube and the flamethrower cannot be effectively cooled. In addition, when the ceramic tube blank is taken out of the mold, the narrow inclined groove is still easy to cause blockage. Therefore, technicians in this field need to make further improvements and design a method that can reduce costs while solving the technical problems of plasma burner cooling. 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] A plasma burner comprises a flamethrower tube, a first ceramic tube, a second ceramic tube, a third ceramic tube coaxially abutted in sequence, and an electrode needle installed inside the plasma burner; the bottom surface of the first ceramic tube and the top surface of the second ceramic tube are respectively provided with a first tangential groove and a second tangential groove corresponding to each other, and the first tangential groove and the second tangential groove form a ventilation groove penetrating the plasma burner; the bottom surface of the first ceramic tube and the top surface of the second ceramic tube are respectively provided with a mounting column and an embedding groove corresponding to each other, and the embedding of the mounting column and the embedding groove prevents relative displacement between the first ceramic tube and the second ceramic tube; Preferably, the third ceramic tube is in the shape of a tube with a large inner diameter at the upper end and a small inner diameter at the lower end, and the inner diameter of the upper end is slightly larger than the outer diameter of the lower end of the second ceramic tube, so that the lower end of the second ceramic tube can be embedded in the upper end of the third ceramic tube; Preferably, the lower end of the electrode needle is provided with a mounting ring whose outer diameter is slightly smaller than the inner diameter of the lower end of the second ceramic tube, and the middle section of the inner part of the second ceramic tube is provided with a limiting ring, and the limiting ring limits the upward movement of the mounting ring; Preferably, a stepped convex ring is provided at the lower end of the flame-spraying tube; The present invention also discloses a burner head of an electric flame stove, comprising any one of the above-mentioned plasma burners, and also comprising a burner head upper shell and a burner head lower shell which are fixedly connected to form an internal cavity structure; Preferably, the upper shell of the burner head is provided with a first through hole whose diameter is smaller than the outer diameter of the convex ring, and the lower shell of the burner head is provided with a second through hole whose diameter is smaller than the outer diameter of the upper end of the third ceramic tube.

[0008] Compared with the prior art, the advantages of the present invention are: 1. The present invention simplifies the production process, adopts a direct mold forming process, omits the steps of burying and pulling out the iron needles, greatly shortens the production cycle, and creates favorable conditions for large-scale production.

[0009] 2. Avoid defective products caused by needle removal, reduce material waste, and further reduce production costs; 3. The present invention completely eliminates the risk of ventilation slot blockage, ensures that the ventilation slot is unobstructed, and the stable rotating airflow helps to generate efficient plasma; 4. The structural connection method of the present invention is simple, and the sleeve connection and interlocking between the components and the clamping and fixing of the shell are convenient for assembly and improve the installation efficiency.

[0010] 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

[0011] 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.

[0012] Figure 1 It is a cross-sectional view of the plasma burner of the present invention.

[0013] Figure 2 It is a structural diagram of the first ceramic tube of the present invention.

[0014] Figure 3 It is a structural diagram of the second ceramic tube of the present invention.

[0015] Figure 4 It is a structural diagram of the third ceramic tube of the present invention.

[0016] Figure 5 It is a structural diagram of the electrode needle of the present invention.

[0017] Figure 6 It is a cross-sectional view of the overall structure of the furnace head of the present invention. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] See also Figure 1 In an embodiment of the present invention, a plasma burner 100 includes a flame-spraying tube 140, a first ceramic tube 110, a second ceramic tube 120, a third ceramic tube 130, which are coaxially connected in sequence, and an electrode needle 150 installed inside the plasma burner 100; like Figure 2-Figure 3 As shown, in an embodiment of the present invention, the bottom surface of the first ceramic tube 110 and the top surface of the second ceramic tube 120 are respectively provided with first tangential grooves 111 and second tangential grooves 121 corresponding to each other, and the first tangential grooves 111 and the second tangential grooves 121 form a ventilation groove 160 that runs through the inside and outside of the plasma burner 100; the bottom surface of the first ceramic tube 110 and the top surface of the second ceramic tube 120 are respectively provided with mounting columns 112 and embedding grooves 122 corresponding to each other, and the embedding of the mounting columns 112 and the embedding grooves 122 prevents relative displacement between the first ceramic tube 110 and the second ceramic tube 120.

[0023] In the embodiment of the present invention, the specific manufacturing process of the first ceramic tube 110, the second ceramic tube 120, and the third ceramic tube 130 is as follows: S1. Put the prepared ceramic raw materials into the corresponding mold, and use a specific molding process and dry pressing to ensure that the density of each part of the ceramic embryo is consistent; S2, the formed ceramic embryo is taken out from the mold and air-dried to fix the shape; S2. Place the ceramic body into a high temperature kiln for firing.

[0024] The present invention adopts the direct mold forming manufacturing technology, which is completed in one step, and omits the steps of burying the iron needle and pulling out the iron needle.

[0025] The present invention avoids defective products caused by needle removal, reduces material waste, and further reduces production costs.

[0026] In terms of product quality control, the present invention completely eliminates the risk of blockage of the ventilation slot 160 because there is no need to remove the needle, ensures the smooth flow of the ventilation slot 160, allows air to smoothly enter the burner, and forms a stable rotating airflow, providing a strong guarantee for the efficient combustion of the plasma burner 100.

[0027] The present invention simplifies the production process, reduces costs, and improves product quality.

[0028] like Figure 3-Figure 4As shown, in the embodiment of the present invention, the third ceramic tube 130 is a tube with a large inner diameter at the upper end and a small inner diameter at the lower end, and the inner diameter of the upper end is slightly larger than the outer diameter of the lower end of the second ceramic tube 120, so that the lower end of the second ceramic tube 120 can be embedded in the upper end of the third ceramic tube 130; In the embodiment of the present invention, the lower end of the electrode needle 150 is provided with a mounting ring 151 whose outer diameter is slightly smaller than the inner diameter of the lower end of the second ceramic tube 120, and the middle section of the second ceramic tube 120 is provided with a limiting ring 123, which limits the upward movement of the mounting ring 151; like Figure 1 As shown, in the embodiment of the present invention, a stepped convex ring 141 is provided at the lower end of the flame-spraying tube 140; See also Figure 6 In an embodiment of the present invention, the present invention further discloses a burner head of an electric flame stove, comprising any of the plasma burners 100 described above, and also comprising an upper shell 200 and a lower shell 300 that are fixedly connected to form an internal cavity structure; like Figure 1 and Figure 6 As shown, in the embodiment of the present invention, the upper shell 200 is provided with a first through hole 210 whose diameter is smaller than the outer diameter of the convex ring 141 , and the lower shell 300 is provided with a second through hole 310 whose diameter is smaller than the outer diameter of the upper end of the third ceramic tube 130 .

[0029] Installation steps of the present invention: Step 1: Pass the upper end of the flame-spraying tube 140 through the first through hole 210 , and make the convex ring 141 at the lower end of the flame-spraying tube 140 abut against the first through hole 210 of the upper shell 200 ; Step 2: insert the upper end of the first ceramic tube 110 into the convex ring 141 at the lower end of the flame-spraying tube 140; Step 3: The mounting column 112 on the bottom surface of the first ceramic tube 110 is correspondingly engaged with the embedding groove 122 on the top surface of the second ceramic tube 120, so that the first ceramic tube 110 and the second ceramic tube 120 are in contact with each other; Step 4: The limiting ring 123 in the middle section of the second ceramic tube 120 is sleeved onto the upper end of the electrode needle 150 , so that the mounting ring 151 at the lower end of the electrode needle 150 is embedded in the lower end of the second ceramic tube 120 ; Step 5: The upper end of the third ceramic tube 130 is sleeved with the lower end of the second ceramic tube 120, and the upper end of the third ceramic tube 130 limits the installation ring 151 on the electrode needle 150 from moving downward; Step 6: The second through hole 310 on the lower shell 300 is sleeved onto the lower end of the third ceramic tube 130 , and the upper end of the third ceramic tube 130 is abutted against the circumference of the second through hole 310 on the lower shell 300 ; Step 7: Fix the upper shell 200 and the lower shell 300 by bolt connection. The upper shell 200 and the lower shell 300 are pressed together to fix the plasma burner 100 as a whole.

[0030] The present invention facilitates assembly and improves installation efficiency through sleeve connection and interlocking between various components and clamping and fixing of the shell.

[0031] 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 plasma burner, comprising a flamethrower tube, a first ceramic tube, a second ceramic tube, a third ceramic tube, and an electrode needle installed inside the plasma burner, characterized in that: The bottom surface of the first ceramic tube and the top surface of the second ceramic tube are respectively provided with a first tangential groove and a second tangential groove corresponding to each other, and the first tangential groove and the second tangential groove form a ventilation groove that penetrates the plasma burner; The bottom surface of the first ceramic tube and the top surface of the second ceramic tube are respectively provided with corresponding mounting columns and embedding grooves, and the embedding of the mounting columns and the embedding grooves prevents relative displacement between the first ceramic tube and the second ceramic tube.

2. The plasma burner according to claim 1, characterized in that: The third ceramic tube is in the shape of a tube with a large inner diameter at the upper end and a small inner diameter at the lower end, and its upper inner diameter is slightly larger than the outer diameter of the lower end of the second ceramic tube, so that the lower end of the second ceramic tube can be embedded in the upper end of the third ceramic tube.

3. The plasma burner according to claim 1, characterized in that: The lower end of the electrode needle is provided with a mounting ring whose outer diameter is slightly smaller than the inner diameter of the lower end of the second ceramic tube, and the middle section of the second ceramic tube is provided with a limiting ring, which limits the upward movement of the mounting ring.

4. The plasma burner according to claim 1, characterized in that: A stepped convex ring is arranged at the lower end of the flame-spraying tube.

5. A burner head of an electric flame stove, characterized in that: The plasma burner comprises the plasma burner as described in any one of claims 1 to 4, and further comprises a burner upper shell and a burner lower shell which are fixedly connected to form an internal cavity structure.

6. The burner head of the electric flame range according to claim 5, characterized in that: The upper shell of the burner head is provided with a first through hole with a diameter smaller than the outer diameter of the convex ring, and the lower shell of the burner head is provided with a second through hole with a diameter smaller than the outer diameter of the upper end of the third ceramic tube.

Images