High-voltage arc rapid cooling ignition head, arc igniter and kitchen arc stove
By designing a high-voltage arc rapid cooling ignition head in an arc igniter, and using structures such as the heat dissipation fin kit and thermal conduction head, the problem of the high temperature of the arc igniter causing the driving circuit board to burn, achieving effective heat dissipation protection.
Patent Information
- Application Number
- CN202421154111.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-24
AI Technical Summary
Existing arc ignitors can easily cause the drive circuit board to burn and cause failure at high temperatures.
Design a high-voltage arc fast cooling ignition head, a heat dissipation fin kit made of non-conductive thermally conductive material, combined with a heat conduction head and a heat dissipation fin, to improve the heat dissipation ability of the conductor rod and prevent heat from being transferred to the circuit board.
Through effective heat dissipation structure design, heat energy is quickly released, the bottom temperature of the conductor rod is suitable, the driving circuit is protected, and the working life is avoided.
Smart Images
Figure CN222437966U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of igniters, in particular to a high-voltage electric arc fast-cooling ignition head, an electric arc igniter and a kitchen electric arc stove. Background Art
[0002] The arc igniter is a common device used in kitchen arc stoves. It converts the low voltage 12 volts into high voltage through frequency conversion. The high voltage current passes through the arc head, and multiple protruding ignition heads generate a relatively high voltage arc to achieve ignition.
[0003] The arc head will generate high temperature during operation. At present, there are two main research directions. The first direction is to improve the high temperature resistance of the igniter material, and the other direction is to set up a heat dissipation structure so that the high temperature can be effectively transferred to the outside to prevent heat accumulation.
[0004] Since the driving end of the igniter is connected to the circuit board at the end of the conductive rod, once the high heat is transferred to the circuit board, it is easy to burn the circuit board. This is also one of the more common faults in electric arc stoves.
[0005] To solve this problem, it is necessary to optimize the heat dissipation structure so that the high heat generated can be diffused as much as possible, and to prevent the heat from being transferred to one side of the circuit board to the greatest extent, thereby achieving the purpose of protecting the circuit board. Utility Model Content
[0006] The utility model aims to address the deficiencies of the prior art and thus provide a high-voltage arc fast-cooling ignition head, an arc igniter and a kitchen arc stove which have excellent heat dissipation performance and can prevent a driving circuit board from being burned.
[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-voltage arc rapid cooling ignition head, including an arc head and a conductive rod with conductive ability, the arc head is installed at the top of the conductive rod, the bottom end of the conductive rod is the drive circuit connection end, and the outside of the conductive rod is equipped with a heat dissipation fin kit, and the material of the heat dissipation fin kit is a non-conductive thermal conductive material.
[0008] Preferably, the heat dissipation fin kit includes a central through hole and a plurality of fins arranged around the central through hole, the central through hole is used to pass the conductive rod, the fins are annular, and the fins are coaxially stacked outside the central through hole at intervals, and the diameters of the fins are the same or different or vary according to a specific rule.
[0009] Preferably, the heat dissipation fin set is made of ceramic, and the overall length of the heat dissipation fin set is ≥ two-thirds of the length of the conductive rod.
[0010] Preferably, heat conducting heads are respectively arranged at the upper and lower parts of the conduction rod, the diameter of the heat conducting heads is larger than the diameter of the conduction rod, and the heat conducting heads are tightly matched with the central through hole of the heat dissipation fin kit.
[0011] Preferably, heat dissipating conductive sheets are integrally provided at the middle and bottom of the conductive rod respectively. The heat dissipating conductive sheets are serrated bodies formed outside the conductive rod and distributed in a ring shape. The diameter of the heat dissipating conductive sheets is larger than the diameter of the conductive rod. The heat dissipating conductive sheet located in the middle is tightly fitted with the central through hole of the heat dissipating fin kit, and the heat dissipating conductive sheet located at the bottom is located outside the heat dissipating fin kit.
[0012] Preferably, an arc head connecting threaded opening is provided at the top end of the conductive rod, and the arc head is threadedly connected to the conductive rod.
[0013] Preferably, a stepped heat dissipation section is provided at the bottom end of the conductive rod, and a plurality of annular heat dissipation fins integrally formed on the conductive rod are provided at the stepped heat dissipation section.
[0014] Preferably, the arc head is bullet-shaped as a whole, a central screw hole is arranged at the bottom end of the arc head, an annular high-heat boss is arranged around the central screw hole, an annular heat dissipation skirt is arranged around the outer contour of the bottom end of the arc head, and an annular groove is formed between the heat dissipation skirt and the high-heat boss.
[0015] An arc igniter comprises a driving circuit and a high-voltage arc rapid cooling ignition head, wherein the bottom end of the conductive rod is welded to the connection point of the driving circuit.
[0016] A kitchen electric arc stove comprises an electric arc stove and an arc igniter arranged in the electric arc stove, wherein the electric arc igniter comprises a driving circuit and a high-voltage electric arc rapid cooling ignition head, and the bottom end of the conductive rod is welded to the connection point of the driving circuit; the high-voltage electric arc rapid cooling ignition heads are distributed in an array in the electric arc stove, and each high-voltage electric arc rapid cooling ignition head shares the same driving circuit or shares multiple driving circuits in groups or each electric arc igniter is independently connected to a driving circuit.
[0017] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:
[0018] 1. Install a heat sink fin kit outside the conduction rod. The high temperature generated by the arc head is transferred to the heat sink fin kit through the conduction rod, and then diffused and dissipated by the heat sink gear kit. The heat energy is quickly released by the heat sink fin kit, so that the temperature at the bottom of the conduction rod is appropriate, thereby ensuring that the drive circuit can always work in a stable state and is not easily burned or affected in service life.
[0019] 2. The heat dissipation sheet and the heat conduction head are distributed on the conduction rod. The diameters of these two structures are larger than the diameter of the conduction rod. On the one hand, the heat conduction capacity of the conduction rod with a small diameter is worse. On the other hand, the heat energy transferred from the conduction rod with a small diameter can be dispersed through the heat dissipation sheet with a large diameter, and transferred to the heat dissipation fin kit through the heat conduction head, which can improve the heat conduction efficiency and further ensure the safety of the working temperature of the circuit board.
[0020] 3. A heat dissipation skirt and a high-heat boss are set at the bottom of the arc head to improve the heat dissipation capacity of the arc head and prevent heat energy from gathering at the connection of the conduction rod.
[0021] 4. The stepped heat dissipation section at the bottom of the conduction rod can hinder heat transfer, so that the waste heat transfer at the bottom of the conduction rod is further hindered, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the high-voltage arc rapid cooling ignition head in Example 1 of the utility model.
[0023] Figure 2 It is a structural schematic diagram of the heat dissipation fin kit in Example 1 of the utility model.
[0024] Figure 3 It is a cross-sectional view of the high-voltage arc rapid cooling ignition head in Example 2 of the utility model.
[0025] Figure 4 It is a schematic structural diagram of the conduction rod in Example 2 of the utility model.
[0026] Figure 5 It is a structural schematic diagram of the arc head in Example 3 of the utility model.
[0027] In the figure: 1. Arc head; 2. Conducting rod; 3. Heat sink fin kit;
[0028] 11. Center screw hole; 12. High heat boss; 13. Heat dissipation skirt; 14. Annular groove;
[0029] 21. Heat conducting head; 22. Heat dissipation sheet; 23. Connection screw; 24. Stepped heat dissipation section;
[0030] 31. Center perforation; 32. Fins. DETAILED DESCRIPTION
[0031] The technical solution of the utility model is further described in detail below through specific implementation methods.
[0032] Example 1
[0033] like Figure 1 and Figure 2As shown, a high-voltage arc rapid cooling ignition head includes an arc head 1 and a conductive rod 2 with conductive ability, wherein the arc head 1 is installed at the top end of the conductive rod 2, the bottom end of the conductive rod 2 is a drive circuit connection end, and the outside of the conductive rod 2 is provided with a heat dissipation fin kit 3, and the material of the heat dissipation fin kit 3 is a non-conductive thermal conductive material.
[0034] An arc head connecting screw hole 23 is provided at the top end of the conductive rod 2 , and the arc head 1 is threadedly connected to the conductive rod 2 .
[0035] The core of this embodiment is to add a heat dissipation fin set 3, which can greatly improve the heat dissipation capacity of the conductive rod 2 to the outside, thereby preventing heat from being transferred downward to the driving circuit connection end and affecting circuit safety.
[0036] Moreover, it is foreseeable that when the overall size of the ignition head is limited, the size of the arc head 1 is not constrained, and the conductive rod 2 needs to reduce its diameter to ensure the size of the heat dissipation fin kit 3. The reduction in the size of the conductive rod 2 itself can reduce the heat transfer capacity. With the help of the heat dissipation fin kit 3, it can not only prevent the conductive rod 2 itself from being burned by high temperature, but also assist in heat dissipation.
[0037] This product generates a continuous arc during high-voltage ignition. The arc head will be conducted to the peripheral heat sink fin kit through the conduction rod under the high temperature of the arc. The heat energy will be quickly released and dropped by the heat sink fin kit to achieve continuous release of the product's high-temperature arc and a suitable bottom temperature, which plays a role in mutual stability.
[0038] Specifically, in this embodiment, the heat dissipation fin kit 3 includes a central through hole 31 and a plurality of fins 32 arranged around the central through hole, the central through hole 31 is used to pass the conductive rod 2, the fins 32 are annular, and the fins 32 are coaxially stacked outside the central through hole 31 at intervals, and the diameters of the fins 32 are the same or different or vary according to a specific rule. The specific rule refers to a rule of change from one end to the other in the form of a certain mathematical curve, such as a gradually increasing diameter, a gradually decreasing diameter, a larger diameter in the middle and a smaller diameter at both ends, etc., which conform to the law of a specific mathematical curve.
[0039] In this embodiment, the heat dissipation fin set 3 is made of ceramic, which has thermal conductivity and insulation capabilities and is a common heat dissipation insulation component in power components.
[0040] In a preferred embodiment, the overall length of the heat dissipation fin assembly is ≥ two-thirds of the length of the conductive rod, so as to improve the heat dissipation capacity as much as possible.
[0041] Example 2
[0042] like Figure 3 and Figure 4As shown, the main difference between this embodiment and embodiment 1 is that: heat conductive heads 21 are respectively arranged at the upper and lower parts of the conductive rod 2, the diameter of the heat conductive head 21 is larger than the diameter of the conductive rod 2, and the heat conductive head 21 is tightly matched with the central through hole of the heat dissipation fin kit 3. The heat conductive head 21 can fix the heat dissipation fin kit 3 and the conductive rod 2 to each other on the one hand, and can promote heat transfer to the heat dissipation fin kit 3 on the other hand.
[0043] In a preferred embodiment, heat dissipating fins 22 are respectively integrally provided at the middle and bottom of the conductive rod 2. The heat dissipating fins 22 are serrated bodies formed outside the conductive rod and distributed in a ring shape. The diameter of the heat dissipating fins 22 is larger than the diameter of the conductive rod. The heat dissipating fins 22 located in the middle are tightly fitted with the central through hole of the heat dissipating fin kit 3, and the heat dissipating fins 22 located at the bottom are located outside the heat dissipating fin kit.
[0044] The heat dissipation conductive sheet 22 itself has a higher heat dissipation capacity and can better transfer the heat energy in the conductive rod 2 to the outside. The middle heat dissipation conductive sheet 22 transfers the heat energy to the heat dissipation fin kit 3, and the bottom heat dissipation conductive sheet 22 transfers the heat energy to the outside.
[0045] Furthermore, in order to delay the heat transfer to the circuit board, a stepped heat dissipation section 24 is provided at the bottom end of the conductive rod 2. The stepped heat dissipation section 24 is provided with a plurality of annular heat sinks integrally formed on the conductive rod, which can further alleviate the heat transfer and protect the circuit board.
[0046] Example 3
[0047] like Figure 5 As shown, the main difference between this embodiment and embodiment 1 or 2 is that the arc head 1 is bullet-shaped as a whole, a central screw hole 11 is arranged at the bottom end of the arc head 1, an annular high-heat boss 12 is arranged around the central screw hole 11, an annular heat dissipation skirt 13 is arranged around the outer contour of the bottom end of the arc head, and an annular groove 14 is formed between the heat dissipation skirt 13 and the high-heat boss 12.
[0048] The heat dissipation skirt 13 can help dissipate heat from the arc head 1, while the annular groove 14 can prevent the heat energy at the heat dissipation skirt 13 from converging toward the central screw hole 11, thereby preventing the heat energy from being transferred to the circuit board below.
[0049] Example 4
[0050] An arc igniter comprises a driving circuit and a high-voltage arc rapid cooling ignition head, wherein the bottom end of the conductive rod is welded to the connection point of the driving circuit.
[0051] Example 5
[0052] A kitchen electric arc stove comprises an electric arc stove and an arc igniter arranged in the electric arc stove, wherein the electric arc igniter comprises a driving circuit and a high-voltage electric arc rapid cooling ignition head, and the bottom end of the conductive rod is welded to the connection point of the driving circuit; the high-voltage electric arc rapid cooling ignition heads are distributed in an array in the electric arc stove, and each high-voltage electric arc rapid cooling ignition head shares the same driving circuit or shares multiple driving circuits in groups or each electric arc igniter is independently connected to a driving circuit.
[0053] Finally, it should be noted that: The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. A high-voltage arc rapid cooling ignition head, comprising an arc head and a conductive rod with conductive ability, wherein the arc head is mounted on the top of the conductive rod, and the bottom of the conductive rod is a drive circuit connection end, characterized in that: The outside of the conductive rod is covered with a heat dissipation fin set, and the material of the heat dissipation fin set is a non-conductive heat-conductive material.
2. The high-voltage arc rapid cooling ignition head according to claim 1, characterized in that: The heat dissipation fin kit includes a central through hole and a plurality of fins arranged around the central through hole. The central through hole is used to pass a conductive rod. The fins are annular. The fins are coaxially stacked outside the central through hole at intervals. The diameters of the fins are the same or different or vary according to a specific rule.
3. The high-voltage arc rapid cooling ignition head according to claim 1 or 2, characterized in that: The heat dissipation fin set is made of ceramic, and the overall length of the heat dissipation fin set is greater than or equal to two-thirds of the length of the conductive rod.
4. The high-voltage arc rapid cooling ignition head according to claim 3, characterized in that: The upper part and the lower part of the conductive rod are respectively provided with heat conducting heads, the diameter of the heat conducting heads is larger than the diameter of the conductive rod, and the heat conducting heads are tightly matched with the central through hole of the heat dissipation fin set.
5. The high-voltage arc rapid cooling ignition head according to claim 1, 2 or 4, characterized in that: The middle and bottom of the conductive rod are respectively provided with heat dissipation conductive sheets, which are toothed bodies formed outside the conductive rod and distributed in a ring shape. The diameter of the heat dissipation conductive sheets is larger than the diameter of the conductive rod. The heat dissipation conductive sheet located in the middle is tightly matched with the central through hole of the heat dissipation fin kit, and the heat dissipation conductive sheet located at the bottom is located outside the heat dissipation fin kit.
6. The high-voltage arc rapid cooling ignition head according to claim 5, characterized in that: An arc head connecting screw hole is arranged on the top of the conductive rod, and the arc head is threadedly connected to the conductive rod.
7. The high-voltage arc rapid cooling ignition head according to claim 6, characterized in that: A stepped heat dissipation section is arranged at the bottom end of the conductive rod, and a plurality of annular heat dissipation fins integrally formed on the conductive rod are arranged at the stepped heat dissipation section.
8. The high-voltage arc rapid cooling ignition head according to claim 7, characterized in that: The arc head is bullet-shaped as a whole, with a central screw hole at the bottom of the arc head, an annular high-heat boss around the central screw hole, and an annular heat dissipation skirt around the outer contour of the bottom of the arc head, forming an annular groove between the heat dissipation skirt and the high-heat boss.
9. An arc igniter, characterized in that: It comprises a driving circuit and the high-voltage arc rapid cooling ignition head according to any one of claims 1 to 8, wherein the bottom end of the conductive rod is welded to the connection point of the driving circuit.
10. A kitchen arc stove, characterized in that: It comprises an arc stove and an arc igniter arranged in the arc stove, the arc igniter comprises a drive circuit and the high-voltage arc rapid cooling ignition head according to any one of claims 1 to 8, the bottom end of the conductive rod is welded to the connection point of the drive circuit; the high-voltage arc rapid cooling ignition heads are distributed in an array in the arc stove, each high-voltage arc rapid cooling ignition head shares the same drive circuit or shares multiple drive circuits in groups or each arc igniter is independently connected to a drive circuit.