Plasma generation assembly and electric combustion stove
By designing the cyclone groove and through-hole structure of the plasma generation assembly in the electric stove, the blowing ability and waterproofing effect of the plasma are improved, breakdown and short circuit problems are solved, and the stable operation of the electric stove is ensured.
Patent Information
- Application Number
- CN202411503722.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The plasma generation components of existing electric stoves are prone to breakdown and liquids may enter the pilot holes during cooking or cleaning, causing short circuits.
A plasma generator assembly is designed, including a plasma needle, a plasma cylinder and a cyclone groove. A plurality of through holes and limit tubes are provided on the side wall of the cyclone groove. A plasma needle is installed in the air cavity. The through hole design makes the wind speed larger. , liquid flows out through the through holes and flows downward along the outer surface of the cyclone groove to the drain outlet to avoid short circuits.
The blowing ability of the plasma is improved, breakdown is avoided, and the liquid is prevented from causing short circuits through effective drainage design, ensuring the normal operation of the electric stove.
Smart Images
Figure CN119255461A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electric stoves, in particular to a plasma generating component and an electric stove. Background Art
[0002] An electric stove is a stove that generates flame-like plasma through high-pressure ionized air and uses the plasma to cook. The patent "Stove Head Structure and Electric Stove" with publication number CN116892738A discloses a stove head structure and an electric stove, including: a plurality of first electrodes, a plurality of second electrodes and an electrode plate; the first electrode is a hollow structure with openings interconnected at both ends, and a first connecting groove for connecting an electrode needle is provided at the bottom of the second electrode; a plurality of electrode grooves are provided on the electrode plate, and the bottom of any electrode groove is insulated and provided with a first pinhole penetrating the electrode plate and at least one guide hole penetrating the electrode plate; the first electrode is correspondingly arranged in the electrode groove, the second electrode is arranged inside the first electrode and does not contact the first electrode, the first connecting groove corresponds to the first pinhole, a flow channel is formed between the first electrode and the second electrode, and the guide holes are all located at the bottom of the flow channel.
[0003] In the above patent, the wind flow generated by the fan has a low wind speed and a small wind force after passing through the guide hole, which makes it difficult to blow the generated plasma, so that after the first electrode and the second electrode generate plasma at a certain arc initiation point, the voltage at the arc initiation point is too high, and the first electrode or the second electrode is broken down. In addition, during cooking or cleaning, liquid may enter the guide hole and flow onto the circuit board inside the electric stove, which may easily cause a short circuit. Summary of the invention
[0004] In view of this, the present invention provides a plasma generating assembly and an electric combustion stove, which are used to solve the problems of easy breakdown and waterproofing of the plasma generating assembly of the electric combustion stove in the prior art.
[0005] To achieve one, part or all of the above purposes or other purposes, the present application provides a plasma generating assembly, including a plasma needle, a plasma cylinder and a cyclone slot;
[0006] The plasma tube is a hollow structure, and is arranged at one end of the notch of the cyclone slot, and the inner side wall of the plasma tube and the cyclone slot are assembled to form a wind cavity, and the bottom wall of the cyclone slot extends into the wind cavity with a limit tube, one end of the plasma needle is located in the wind cavity, and the other end passes through the limit tube and then passes out from the bottom wall of the cyclone slot;
[0007] A plurality of through holes connecting the wind cavity with the outside are arranged on the side wall of the cyclone groove, and an annular boss is arranged at one end of the cyclone groove away from the nozzle.
[0008] Furthermore, a connecting tube is provided on the bottom wall of the cyclone groove, and the bottom wall of the cyclone groove is located between the limiting tube and the connecting tube. After the plasma needle passes through the limiting tube and the bottom wall of the cyclone groove, it passes through the connecting tube.
[0009] Furthermore, the cyclone groove, the limiting pipe and the connecting pipe are integrally formed.
[0010] Furthermore, the cyclone groove is made of insulating material.
[0011] Further, one end of the plasma needle passing through the cyclone slot is connected to a connecting piece;
[0012] The connecting piece can be connected to a circuit board, or the plasma needle can be connected to a circuit board after passing through the cyclone slot and the connecting piece.
[0013] Furthermore, a plurality of through holes are provided, and the plurality of through holes are axially distributed on the side wall of the cyclone groove, and there is a height difference between adjacent through holes.
[0014] Furthermore, the through hole includes a first opening arranged on the outer surface of the cyclone groove side wall and a second opening arranged on the inner surface of the cyclone groove side wall, the first opening is connected to the second opening through an inclined column hole, and the projection of the first opening on the inner surface of the cyclone groove side wall does not overlap with the second opening.
[0015] Further, the area of the first opening is smaller than the area of the second opening.
[0016] Furthermore, a guide portion is provided between the lower end of the position-limiting tube and the bottom wall of the cyclone groove, and the guide portion extends from the position-limiting tube to the side wall of the cyclone groove.
[0017] To achieve one, part, or all of the above purposes or other purposes, the present application provides an electric stove comprising any of the plasma generating components described above.
[0018] Implementing the embodiments of the present invention will have the following beneficial effects:
[0019] After adopting the above plasma generating assembly and electric stove, the shape of the cyclone groove is changed. By setting a limit tube, the distance between the outer surface of the limit tube and the inner surface of the cyclone groove is small, so that after the wind flows into the wind cavity through the through hole, the wind speed is greater. A plurality of through holes are set on the surface of the cyclone groove, and the volume of each through hole is small. Generally speaking, the amount of wind that can enter the wind cavity is greater, and the wind speed is faster, so that the generated plasma can be blown more easily to avoid breaking through the plasma needle or plasma cylinder. In addition, when the liquid flows into the wind cavity through the plasma cylinder, it flows out of the wind cavity through the through hole and flows downward along the outer surface of the cyclone groove. Since a boss is set at the lower end of the cyclone groove, the liquid will not flow along the connecting tube outside the plasma needle to the connecting piece and the circuit board, but will directly flow from the lower end of the boss to the drain port set inside the electric stove, which has a good waterproof effect and will not cause a short circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 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 work.
[0021] in:
[0022] Figure 1 A schematic diagram of the explosion structure of an embodiment of the plasma generating assembly proposed in the present application;
[0023] Figure 2 A front view of an embodiment of a plasma generating assembly proposed in the present application;
[0024] Figure 3 for Figure 2 Sectional view of section AA;
[0025] Figure 4 A schematic diagram of the structure of a cyclone slot in one embodiment of a plasma generating assembly proposed in this application;
[0026] Figure 5 A schematic diagram of an explosion structure of another embodiment of a plasma generating assembly proposed in the present application;
[0027] Figure 6 This is a schematic diagram of the assembled plasma needle and the connecting piece in another embodiment of the plasma generating assembly proposed in the present application;
[0028] Figure 7 for Figure 6 Cross-sectional view of section BB.
[0029] Reference numerals:
[0030] 2. plasma tube; 3. cyclone slot; 31. limit tube; 32. boss; 33. connecting tube; 34. flow guide; 4. wind cavity; 5. through hole; 51. first opening; 52. second opening; 53. oblique column hole;
[0031] Embodiment 1: 1a, plasma needle; 6a, connecting piece;
[0032] Embodiment 2: 1b, plasma needle; 6b, connecting piece. DETAILED DESCRIPTION
[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0036] Embodiment 1:
[0037] Reference Figures 1 to 4 , the present application proposes a plasma generating assembly, comprising a plasma needle 1a, a plasma cylinder 2 and a cyclone slot 3;
[0038] The plasma tube 2 is a hollow structure, and is arranged at one end of the notch of the cyclone slot 3. The inner side wall of the plasma tube 2 and the cyclone slot 3 are assembled to form a wind cavity 4. The bottom wall of the cyclone slot 3 extends into the wind cavity 4 to form a limit tube 31. One end of the plasma needle 1a is located in the wind cavity 4, and the other end passes through the limit tube 31 and then passes out from the bottom wall of the cyclone slot 3.
[0039] Specifically, the plasma tube 2 is a cylindrical structure with a small top and a large bottom. The lower end of the plasma tube 2 is provided with a thread, and is assembled with the upper end of the cyclone slot 3 through the thread. The outer wall of the plasma tube 2 is provided with a groove. Since a plurality of plasma generating components are arranged in a burner, the plasma tube 2 is assembled on the top plate of the burner through the groove, and a plurality of plasma tubes 2 are arranged at intervals. The end of the plasma needle 1a located in the wind cavity 4 is conical. There is no direct contact between the plasma tube 2 and the plasma needle 1a. The plasma tube 2 is electrically connected to one pole of the power supply, and the plasma needle 1a is electrically connected to the other pole of the power supply. After the electric stove is powered on, the current passes through the transformer, so that there is a high voltage between the plasma tube 2 and the plasma needle 1a. The air between the plasma tube 2 and the plasma needle 1a is ionized by the high voltage to generate plasma.
[0040] A plurality of through holes 5 are provided on the side wall of the cyclone groove 3 to connect the ventilation cavity 4 with the outside. An annular boss 32 is provided at one end of the cyclone groove 3 away from the nozzle.
[0041] In this embodiment, a fan is provided in the furnace head, and the wind generated by the fan when working flows into the wind cavity 4 from the through hole 5. For the fluid, the smaller the cross-sectional area flowing through, the faster the wind speed. The limit tube 31 is sleeved on the outside of the plasma needle 1a. The limit tube 31 has a certain thickness, which reduces the distance from the outside of the plasma needle 1a to the inside of the side wall of the cyclone groove 3. After the wind flows into the wind cavity 4, it is accelerated in the wind cavity 4, and the wind speed is greater, which can form a cyclone and flow upward, driving the generated plasma to flow in the wind cavity 4 together. In the existing plasma generating assembly, the width of the wind cavity is determined by the distance between the plasma needle and the plasma cylinder. The scheme in this embodiment can avoid the situation that after the plasma is generated at the arc initiation point, the wind speed is too small, and the position of the arc initiation point cannot be changed, causing the plasma cylinder 2 or the plasma needle 1a to be punctured.
[0042] In addition, when cooking or cleaning the stove, liquid may flow into the wind cavity 4 from the upper end of the plasma tube 2. Since a plurality of plasma generating components are provided on a burner, the volume of each plasma tube 2 is small, the opening at the upper end of the plasma tube 2 is also small, and the amount of liquid flowing into each wind cavity 4 is also small. Since a limiting tube 31 is provided on the outer side of the plasma needle 1a, when the liquid flows to the bottom end of the cyclone groove 3, the cyclone groove 3 and the limiting tube 31 are both insulating materials such as ceramic or mica, and plasma can only be generated between the upper end of the plasma needle 1a and the plasma tube 2, and the arcing point will not be generated on the cyclone groove 3 or the limiting tube 31. The cyclone groove 3 can play a waterproof effect to avoid a short circuit between the plasma tube 2 and the plasma needle 1a. Since a plurality of through holes 5 are arranged on the side wall of the cyclone groove 3, when the electric stove is not working, the fan for generating the cyclone therein also stops working, and the liquid can flow out from the through holes 5 at this time. When the liquid flows to the outer wall of the cyclone groove 3, it flows downward under the action of gravity. The boss 32 arranged at the lower end of the cyclone groove 3 makes the bottom wall of the cyclone groove 3 and the lower end of the outer wall of the cyclone groove 3 have a height difference, and the cross-sectional outer diameter of the boss 32 is equal to the cross-sectional outer diameter of the cyclone groove 3. The liquid can flow downward along the boss 32, and will not flow along the outer wall of the cyclone groove 3 to the bottom wall of the cyclone groove 3, and further flow to the circuit board connected to the plasma needle 1a, causing a short circuit. A stove bottom plate can be arranged between the cyclone groove 3 and the circuit board. After the liquid drips onto the stove bottom plate along the boss 32, it is discharged from the electric stove through the drain port arranged on the stove bottom plate. The waterproof effect is good and will not affect the normal operation of the electronic components inside the electric stove.
[0043] In this embodiment, a connecting tube 33 is further provided on the bottom wall of the cyclone groove 3, and the bottom wall of the cyclone groove 3 is located between the limiting tube 31 and the connecting tube 33. After the plasma needle 1a passes through the limiting tube 31 and the bottom wall of the cyclone groove 3, it passes through the connecting tube 33, so that the part of the plasma needle 1a located on the outer side 4 of the wind cavity is also wrapped by the connecting tube 33, further protecting the plasma needle 1a. In addition, the cyclone groove 3, the limiting tube 31 and the connecting tube 33 are integrally formed and arranged for easy assembly.
[0044] In this embodiment, one end of the plasma needle 1a passing through the cyclone slot 3 is connected to a connector 6a, and the connector 6a can be connected to the circuit board. The lower end of the plasma needle 1a is provided with an external thread, and the upper end of the connector 6a is correspondingly provided with an internal thread. The plasma needle 1a and the connector 6a are assembled together by threads. In addition to threaded connection, they can also be connected by snaps or other means. The other end of the connector 6a can be assembled with the circuit board by plugging or welding. The circuit board is provided with a connection hole at a corresponding position, and the connector 6a is inserted into the connection hole and fixed. In one embodiment, a plurality of through holes 5 are provided, and the plurality of through holes are axially distributed on the side wall of the cyclone slot 3, and there is a height difference between adjacent through holes 5. Each through hole 5 includes a first opening 51 provided on the outer surface of the side wall of the cyclone slot 3 and a second opening 52 provided on the inner surface of the side wall of the cyclone slot 3. The first opening 51 is connected to the second opening 52 through an inclined column hole 53, and the projection of the first opening 51 on the inner surface of the side wall of the cyclone slot 3 does not overlap with the second opening 52.
[0045] Specifically, the size and number of the through holes 5 can be set as required. Figure 2 As shown, four, six or eight through holes 5 of the same height can be provided, or a plurality of through holes 5 can be distributed in a spiral or "Z" shape on the side wall of the cyclone groove 3, and the heights of any two adjacent through holes 5 are not equal. Each through hole 5 is not connected to the adjacent through holes 5, or on the inner surface of the side wall of the cyclone groove 3, a second opening 52 and another second opening 52 adjacent thereto partially overlap, so that several winds converge to form the same wind. The total number of through holes 5 is between 6 and 28. It is preferred to increase the number of through holes 5 and reduce the volume of each through hole 5, so as to ensure the total amount of wind entering the wind cavity 4, and to increase the wind speed by reducing the diameter of the through hole 5, so that the wind has a higher initial velocity as soon as it enters the wind cavity 4, and fully utilizes the wind generated by the fan to drive the plasma to rotate. In addition, the inclination angle of each inclined column hole 53 determines the angle of the wind when it enters the wind cavity 4. When the wind encounters obstacles, such as the inner wall of the cyclone groove 3 and the outer wall of the limiting tube 31, it will slow down. In order to minimize the loss caused by wind obstruction, the inclination angle of the inclined column hole 53 is between 30° and 90°, which can not only ensure that the wind can enter the wind cavity 4, but also ensure that the wind speed is not reduced due to obstruction after entering the wind cavity 4.
[0046] In this embodiment, the first opening 51 is approximately circular, the second opening 52 is approximately teardrop-shaped, and the area of the first opening 51 is smaller than the area of the second opening 52, so that a larger air volume can be obtained. In different embodiments, the first opening 51 and the second opening 52 can also be of the same shape and size. The position of the second opening 52 can be slightly higher than the first opening 51, so that the wind can obtain an upward acceleration when entering the wind cavity 4, so that each wind can converge and flow upward, or it can only rely on the pressure difference caused by the fluid flow rate above and below the wind cavity 4, so that the converged wind flows upward.
[0047] In addition, the through hole 5 is used as an air inlet as well as a water outlet to drain water. Specifically, due to the effect of gravity, the liquid is not likely to remain on the plasma tube 2 or the plasma needle 1a, but will flow downward along the inner wall of the cyclone groove 3 or the outer wall of the limit tube 31. Since the cyclone groove 3 and the limit tube 31 are both made of insulating materials, they will not cause a short circuit and affect the operation of the electronic components inside the electric stove. In one embodiment, a guide portion 34 is provided between the lower end of the limit tube 31 and the bottom wall of the cyclone groove 3, and the guide portion 34 extends from the limit tube 31 to the side wall of the cyclone groove 3. The longitudinal section of the guide portion 34 is approximately a trapezoid with two oblique sides being arcs. On the side wall of the cyclone groove 3, a through hole 5 is provided near the guide portion 34, so that the liquid can flow out of the through hole 5 along the guide portion 34, avoiding liquid remaining in the wind cavity 4, which affects the generation and rotation of plasma when the electric stove is powered on.
[0048] Reference Figures 5 to 7 , the present application also proposes an embodiment 2, which differs from the above embodiments only in the assembly of the plasma needle 1b and the circuit board. In embodiment 2, the plasma needle 1b is provided with an external thread, and the connecting piece 6b is a hollow cylindrical structure, and an internal thread is correspondingly arranged inside it. After the plasma needle 1b and the connecting piece 6b are assembled together by threads, the plasma needle 1a passes through the inside of the connecting piece 6b, and the circuit board is provided with a jack at a corresponding position. One end of the plasma needle 1a can be directly plugged into the circuit board and electrically connected to the circuit board. Compared with the implementation method of embodiment 1, the connecting piece 6b of this embodiment can be an insulating piece to prevent arcing between two adjacent connecting pieces 6b.
[0049] The present application also provides an electric stove, comprising the above-mentioned plasma generating assembly.
[0050] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. A plasma generating assembly, characterized in that: Including plasma needle, plasma cylinder and cyclone slot; The plasma tube is a hollow structure, and is arranged at one end of the notch of the cyclone slot, and the inner side wall of the plasma tube and the cyclone slot are assembled to form a wind cavity, and the bottom wall of the cyclone slot extends into the wind cavity with a limit tube, one end of the plasma needle is located in the wind cavity, and the other end passes through the limit tube and then passes out from the bottom wall of the cyclone slot; A plurality of through holes connecting the wind cavity with the outside are arranged on the side wall of the cyclone groove, and an annular boss is arranged at one end of the cyclone groove away from the nozzle.
2. The plasma generating assembly according to claim 1, characterized in that: A connecting pipe is also provided on the bottom wall of the cyclone groove, and the bottom wall of the cyclone groove is located between the limiting pipe and the connecting pipe. After the plasma needle passes through the limiting pipe and the bottom wall of the cyclone groove, it passes through the connecting pipe.
3. The plasma generating assembly according to claim 2, characterized in that: The cyclone groove, the limiting pipe and the connecting pipe are integrally formed.
4. The plasma generating assembly according to claim 3, characterized in that: The cyclone groove is made of insulating material.
5. The plasma generating assembly according to claim 1, characterized in that: One end of the plasma needle passing through the cyclone slot is connected to a connecting piece; The connecting piece can be connected to a circuit board, or the plasma needle can be connected to a circuit board after passing through the cyclone slot and the connecting piece.
6. The plasma generating assembly according to claim 1, characterized in that: A plurality of through holes are provided, and the plurality of through holes are axially distributed on the side wall of the cyclone groove, and there is a height difference between adjacent through holes.
7. The plasma generating assembly according to claim 6, characterized in that: The through hole includes a first opening arranged on the outer surface of the cyclone groove side wall and a second opening arranged on the inner surface of the cyclone groove side wall, the first opening is connected to the second opening through an inclined column hole, and the projection of the first opening on the inner surface of the cyclone groove side wall does not overlap with the second opening.
8. The plasma generating assembly according to claim 7, characterized in that: An area of the first opening is smaller than an area of the second opening.
9. The plasma generating assembly according to claim 1, characterized in that: A flow guide portion is provided between the lower end of the position limiting tube and the bottom wall of the cyclone groove, and the flow guide portion extends from the position limiting tube to the side wall of the cyclone groove.
10. An electric stove, characterized in that: A plasma generating assembly comprising any one of claims 1 to 9.