Burner structure and electric flame stove

Abstract

The furnace end structure comprises a first furnace plate, a second furnace plate, a third furnace plate, a fourth furnace plate and a plurality of anode needles, the second furnace plate and a plurality of ceramic tubes are of an integrally-formed ceramic structure, and the third furnace plate and a plurality of connecting tubes are of an integrally-formed ceramic structure. The first furnace plate and the multiple cathode spray pipes are of an integrally-formed stainless steel structure. According to the furnace end structure, the first furnace plate, the second furnace plate, the third furnace plate and the fourth furnace plate are integrated with multiple accessories, the structure is greatly simplified, assembly and maintenance of the furnace end structure are facilitated, and the manufacturing difficulty and cost are reduced.

Description

Technical Field

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

[0002] Electric arc is a gas discharge phenomenon, which produces high-temperature and highly conductive free gas, namely plasma. The electric flame stove uses high-voltage electricity to break through the air to form a stable electric arc, and the high-temperature plasma generated heats the pot body. The working principle of the electric flame stoves currently on the market is basically that the transformer module increases the low-voltage electricity to high-voltage electricity and outputs it to the rectifier circuit, converts the alternating current into direct current through the rectifier and distributes the high-voltage power supply to multiple anode needles for arc initiation. When the anode needle discharges, a high-temperature plasma flame is generated, providing a powerful heating capacity for the electric flame stove.

[0003] For example, the patent with the authorization disclosure (announcement) number CN118532725B proposes an electric flame stove burner head that prevents electromagnetic external radiation and has a strong structure, including a shell, a base plate arranged at the bottom of the shell, and a plurality of plasma combustion components arranged between the shell and the base plate, wherein the plasma combustion components include an anode needle, a first ceramic tube, a second ceramic tube and a cathode nozzle.

[0004] The above-mentioned existing patents have a relatively complex structure. Each plasma combustion assembly is composed of four components: an anode needle, a first ceramic tube, a second ceramic tube and a cathode nozzle. For example, a commercial electric flame stove with a power of 20KW is equipped with at least 200 plasma combustion assemblies, and its various components are as many as more than 800. This makes the component manufacturing difficult and requires a large number of manufacturing processes, resulting in high production costs. At the same time, the numerous components and parts make the installation process extremely complicated, requiring professional technicians to spend a lot of time and energy to organize and install them, increasing the installation cost and time cost.

[0005] The above-mentioned existing patents also have problems in terms of performance impact. For example, there is a certain gap between the first ceramic tube and the second ceramic tube in the abutment connection. The anode needle installed between the two may arc with the stainless steel base plate through the gap, which affects the normal use of the electric flame stove. 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 burner structure, comprising a first burner plate, a second burner plate, a third burner plate, a fourth burner plate and a plurality of anode pins, wherein the first burner plate and the fourth burner plate together form a burner cavity, and the second burner plate, the third burner plate and the plurality of anode pins are all installed in the burner cavity; The lower end surface of the second furnace plate is provided with a plurality of ceramic tubes corresponding to the anode needles, a limiting ring is provided in the middle section of the ceramic tube, and an annular fixing ring is provided in the middle section of the anode needle, the fixing ring is embedded in the lower end of the ceramic tube, and the upper end of the anode needle passes through the limiting ring and extends upward, and the inner diameter of the limiting ring is smaller than the outer diameter of the fixing ring; The lower end surface of the third furnace plate is provided with a plurality of connecting tubes corresponding to the ceramic tubes, and the connecting tubes provide a channel for electrical connection between the anode needle and the anode end of the circuit board below; The second furnace plate and the plurality of ceramic tubes are an integrally formed ceramic structure, and the third furnace plate and the plurality of connecting tubes are an integrally formed ceramic structure; Preferably, the upper end surface of the first furnace plate is provided with a plurality of cathode nozzles corresponding to the ceramic tubes, and the first furnace plate and the plurality of cathode nozzles are an integrally formed stainless steel structure; Preferably, at least two positioning bolts are arranged around the lower end surface of the first furnace plate, and the second furnace plate, the third furnace plate and the fourth furnace plate are respectively provided with positioning holes 2, 3 and 4 corresponding to the positioning bolts; Preferably, each set of corresponding cathode nozzles, ceramic tubes, anode needles and connecting needles constitutes a plasma generator; Preferably, the fourth furnace plate is provided with a plurality of through holes corresponding to the connecting pipes, the connecting pipes extend downward through the through holes, and the fourth furnace plate is made of stainless steel; Preferably, the lower end surface of the fourth furnace plate is also provided with a connecting column connected to the cathode end of the circuit board; Preferably, a blower for air intake is installed on the lower end surface of the first furnace plate; Preferably, a plurality of air inlet holes are arranged on the wall of the ceramic tube.

[0008] The present invention also provides an electric flame stove, comprising the structure of any one of the burner heads described above.

[0009] Compared with the prior art, the advantages of the present invention are: the first furnace plate, the second furnace plate, the third furnace plate and the fourth furnace plate of the furnace head structure of the present invention integrate multiple accessories, which greatly simplifies the structure, facilitates the assembly and maintenance of the furnace head structure, and reduces the manufacturing difficulty and cost.

[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 structural exploded view of a burner head of the present invention.

[0013] Figure 2 It is a three-dimensional view of the second furnace plate of the present invention.

[0014] Figure 3 It is a stereoscopic diagram of the overall structure of the furnace head and the circuit board of the present invention. DETAILED DESCRIPTION

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] See also Figure 1-2In an embodiment of the present invention, a burner structure includes a first furnace plate 100, a second furnace plate 200, a third furnace plate 300, a fourth furnace plate 400 and a plurality of anode needles 500. The first furnace plate 100 and the fourth furnace plate 400 together form a hollow burner cavity, and the second furnace plate 200, the third furnace plate 300 and the plurality of anode needles 500 are all installed in the burner cavity.

[0020] In the embodiment of the present invention, the lower end surface of the second furnace plate 200 is provided with a plurality of ceramic tubes 210 corresponding to the anode needle 500, and the limiting ring 211 provided in the middle section of the ceramic tube 210 cooperates with the fixing ring 510 in the middle section of the anode needle 500. Since the inner diameter of the limiting ring 211 is smaller than the outer diameter of the fixing ring 510, when the fixing ring 510 is embedded in the lower end of the ceramic tube 210, the limiting ring 211 limits the upward movement of the fixing ring 510, so that the upward movement of the anode needle 500 in the vertical direction is constrained. At the same time, the upper end surface of the third furnace plate 300 limits the downward movement of the fixing ring 510, and the anode needle 500 is constrained from the upper and lower directions by the limiting ring 211 and the third furnace plate 300 in the vertical direction, ensuring that the position of the anode needle 500 in the furnace head cavity is accurate and stable. This design ensures that the anode needle 500 will not affect the performance and working effect of the furnace head due to shaking, displacement, etc. during the operation of the furnace head, so that the anode needle 500 can always be in a suitable working position.

[0021] In the embodiment of the present invention, the upper end of the anode needle 500 extends upward through the limiting ring 211, and an air duct is formed between the upper end of the anode needle 500 and the ceramic tube 210. Gas can flow in the air duct, and the heat generated by the anode needle 500 is taken away by the heat exchange of the gas, and the anode needle 500 and the surrounding components are cooled. At the same time, the gas after heat exchange provides sufficient working medium for generating high-temperature plasma.

[0022] In the embodiment of the present invention, the second furnace plate 200 and the plurality of ceramic tubes 210 are an integrally formed ceramic structure, the third furnace plate 300 and the plurality of connecting tubes 310 are an integrally formed ceramic structure, and the first furnace plate 100 and the plurality of cathode nozzles 110 are an integrally formed stainless steel structure. This integrated overall structure greatly simplifies the furnace head structure and reduces numerous parts. It not only greatly reduces the complexity of the manufacturing process, but also facilitates the assembly operation of the workers, reducing the difficulty of assembly and the difficulty of parts management.

[0023] like Figure 1 and Figure 3As shown, in the embodiment of the present invention, the fourth furnace plate 400 is provided with a plurality of through holes 410 corresponding to the connecting tube 310, the connecting tube 310 extends downward through the through holes 410, and the anode needle 500 is electrically connected to the anode end of the circuit board 700 below through the inside of the connecting tube 310. Since there is no gap in the integrally formed structure of the third furnace plate 300 and the connecting tube 310, it is possible to prevent the electric field from forming an abnormal distribution through the gap between the anode needle 500 and the fourth furnace plate 400, thereby avoiding the arcing phenomenon between the anode needle 500 and the fourth furnace plate 400 due to excessive electric field strength.

[0024] In the embodiment of the present invention, the positioning bolts 120 of the first furnace plate 100 pass through the second positioning hole 220, the third positioning hole 320 and the fourth positioning hole 420 respectively, so that each group of corresponding cathode nozzles 110, ceramic tubes 210, anode needles 500 and connecting tubes 310 can be accurately positioned, thereby forming a plasma generator, and finally the positioning bolts 120 are fixed by nuts to tightly connect the first furnace plate 100, the second furnace plate 200, the third furnace plate 300 and the fourth furnace plate 400 together, so that the furnace head forms a whole. This fixing method enhances the integrity and stability of the furnace head structure and ensures that the relative positions of the components remain unchanged during operation.

[0025] like Figure 3 As shown, in the embodiment of the present invention, the connecting column 430 at the lower end surface of the fourth furnace plate 400 can electrically connect the fourth furnace plate 400, the first furnace plate 100 and the cathode nozzle 110 to the cathode end of the circuit board 700 to form a complete circuit loop, and the setting of the connecting column 430. While achieving electrical connection, it also plays a role of mechanical fixing, tightly combining the furnace head with the circuit board 700, so that the furnace head can operate more stably and reliably during operation.

[0026] like Figure 1 As shown, in the embodiment of the present invention, a blower 600 for air intake is installed on the lower end surface of the fourth furnace plate 400. The blower 600 introduces external air into the interior of the furnace head, providing a necessary gas source for the operation of the furnace head. A plurality of air inlet holes 212 are arranged on the wall of the ceramic tube 210, and the air inlet holes 212 enable the air introduced by the blower 600 to enter the air duct in the plasma generator. On the one hand, the air entering the air duct can participate in the heat dissipation and cooling process of the anode needle 500 and other components, thereby improving the heat dissipation efficiency; on the other hand, the air entering the air duct can provide sufficient gas for the anode needle 500 to discharge and ionize the air to form enough plasma.

[0027] like Figure 1-2As shown, the structure of the burner head of the present invention is mainly composed of a first furnace plate 100, a second furnace plate 200, a third furnace plate 300, a fourth furnace plate 400 and a plurality of anode needles 500 for discharge. The first furnace plate 100, the second furnace plate 200, the third furnace plate 300 and the fourth furnace plate 400 of the burner head structure of the present invention integrate multiple accessories, so they can be mass-produced by molds, and the subsequent installation process is simple. The installation steps of the burner head of the present invention mainly include: S1, passing the upper ends of the plurality of anode needles 500 through the corresponding limiting rings 211 of the second furnace plate 200, and fitting the fixing rings 510 of the anode needles 500 into the lower ends of the ceramic tubes 210; S2, passing the positioning bolts 120 on the first furnace plate 100 through the corresponding positioning holes 220, 320 and 420, so that the corresponding cathode nozzle 110, ceramic tube 210, anode needle 500 and connecting needle are accurately positioned to form a plasma generator; S3. Fix the positioning bolt 120 by means of the nut thread to fix the structure of the furnace head.

[0028] Compared with the numerous and complicated burner head accessories in the prior art, the burner head of the present invention only needs the core components such as the first burner plate 100, the second burner plate 200, the third burner plate 300, the fourth burner plate 400 and a plurality of anode pins 500, which greatly simplifies the structure. Therefore, the burner head of the present invention is easy to assemble and maintain, and reduces the manufacturing difficulty and cost.

[0029] The present invention also provides an electric flame stove, comprising the structure of a burner according to any one of the above technical solutions.

[0030] 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 furnace head structure, comprising a first furnace plate, a second furnace plate, a third furnace plate, a fourth furnace plate and a plurality of anode needles, characterized in that: The first furnace plate and the fourth furnace plate together form a hollow furnace head cavity, and the second furnace plate, the third furnace plate and the plurality of anode needles are all installed in the furnace head cavity; The lower end surface of the second furnace plate is provided with a plurality of ceramic tubes corresponding to the anode needles, a limiting ring is provided in the middle section of the ceramic tube, and an annular fixing ring is provided in the middle section of the anode needle, the fixing ring is embedded in the lower end of the ceramic tube, and the upper end of the anode needle passes through the limiting ring and extends upward, and the inner diameter of the limiting ring is smaller than the outer diameter of the fixing ring; The lower end surface of the third furnace plate is provided with a plurality of connecting tubes corresponding to the ceramic tubes, and the connecting tubes provide a channel for electrical connection between the anode needle and the anode end of the circuit board below; The second furnace plate and the plurality of ceramic tubes are an integrally formed ceramic structure, and the third furnace plate and the plurality of connecting tubes are an integrally formed ceramic structure.

2. The structure of the burner head according to claim 1, characterized in that: A plurality of cathode nozzles corresponding to the ceramic tubes are disposed on the upper end surface of the first furnace plate, and the first furnace plate and the plurality of cathode nozzles are an integrally formed stainless steel structure.

3. The structure of the furnace head according to claim 1, characterized in that: At least two positioning bolts are arranged around the lower end surface of the first furnace plate, and the second furnace plate, the third furnace plate and the fourth furnace plate are respectively provided with positioning holes 2, 3 and 4 corresponding to the positioning bolts.

4. The structure of the burner head according to claim 2, characterized in that: Each set of corresponding cathode nozzles, ceramic tubes, anode needles and connecting needles constitutes a plasma generator.

5. The structure of the burner head according to claim 1, characterized in that: The fourth furnace plate is provided with a plurality of through holes corresponding to the connecting pipes, the connecting pipes extend downward through the through holes, and the fourth furnace plate is made of stainless steel.

6. The structure of the furnace head according to claim 1, characterized in that: The lower end surface of the fourth furnace plate is also provided with a connecting column connected to the cathode end of the circuit board.

7. The structure of the burner according to claim 1, characterized in that: A blower for air intake is installed on the lower end surface of the first furnace plate.

8. The structure of the furnace head according to claim 1, characterized in that: A plurality of air inlet holes are arranged on the wall of the ceramic tube.

9. An electric flame cooker, characterized in that: A structure comprising a burner head as claimed in any one of claims 1 to 8.

Images