Novel induction heating coil
By cross-arranged the same-direction main and secondary coils and refrigerant pipe structures, the problem of easy damage to the induction coils during mechanical adjustment is solved, and the pitch is flexibly adjusted and the service life is extended.
Patent Information
- Application Number
- CN202421877510.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-05
AI Technical Summary
Existing induction coils are prone to deform or break when adjusted by mechanical stretching or compression pitch, which affects their service life.
The cross-arranged co-ordinated main induction coil and sub-coil are adopted to adjust the effective pitch by controlling the intervention and exit of the sub-coil, and combine the refrigerant tube and insulating structure to avoid damage caused by mechanical adjustment.
Effectively adjust the pitch of the induction coil, extend the service life, avoid damage caused by mechanical adjustment, and adapt to different process needs.
Smart Images
Figure CN223093907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an induction coil, in particular to a novel induction heating coil. Background Art
[0002] The induction heating coil is an important part of the medium frequency melting furnace. The induction coil is powered by a medium frequency power supply and generates a strong magnetic field under the action of medium frequency voltage and current. This magnetic field causes the metal in the furnace to generate eddy currents and generate heat. The coil is the key to converting electrical energy into thermal energy. The coil is usually supported by a hollow copper tube, and the coolant circulates in the cavity to take away the heat generated by the coil's own impedance.
[0003] Since the pitch of the induction coil affects the temperature field distribution in the reaction chamber, it is necessary to adjust the pitch of the induction coil so that the temperature field it generates meets the process requirements. The existing adjustment method of the induction coil usually adopts mechanical stretching or compression of the pitch of the coil. The hollow copper tube will be deformed or broken when frequently stretched or compressed, which affects the service life of the induction coil. Utility Model Content
[0004] The utility model aims to provide a novel induction heating coil, which is used to solve the problem that the existing induction coil adjustment method usually adopts mechanical stretching or compression of the coil pitch, and the hollow copper tube will be deformed or broken when frequently stretched or compressed, thereby affecting the service life of the induction coil.
[0005] In order to solve the above problems, the utility model provides a novel induction heating coil, including a spiral main induction coil, wherein secondary coils with the same direction are cross-arranged between the pitches of the main induction coils, the pitch of the secondary coils is the same as the pitch of the main induction coils, the main induction coils and the secondary coils are respectively connected to wiring devices, and the current directions of the main induction coils and the secondary coils are consistent.
[0006] The utility model provides a novel induction heating coil which also has the following technical features:
[0007] Furthermore, both the main induction coil and the auxiliary coil are hollow structures, and the cavities of the main induction coil and the auxiliary coil are connected with a refrigerant pipe.
[0008] Furthermore, a fixing plate is provided on the main induction coil and the secondary coil, a bracket is fixedly connected to the fixing plate, the bracket extends into the gap between the main induction coil and the secondary coil, a groove is provided at one end of the bracket, a pressure plate is provided in the groove, a screw is fixedly connected to the pressure plate, the bracket and the fixing plate are provided with holes for the screw to pass through, and the screw is threadedly connected to the fixing plate with a fastening nut.
[0009] Furthermore, the number of the secondary coils is one or more.
[0010] Furthermore, the main induction coil and the auxiliary coil are coated with an insulating layer.
[0011] Further, the fixing plate, the bracket, and the pressing plate are all made of insulating materials.
[0012] The utility model has the following beneficial effects: The novel induction heating coil described in this application utilizes the main induction coil and the secondary coil that cross and have the same direction. By whether the secondary coil intervenes, the effective pitch of the induction coil is adjusted, so that the induction heating coil meets different applicable environments, avoiding damage to the coil caused by forced pitch adjustment and affecting the service life of the induction coil. Description of the Drawings
[0013] Figure 1 Isometric schematic diagram of the novel induction heating coil of the embodiment of the utility model;
[0014] Figure 2 The novel induction heating coil of the embodiment of the utility model Figure 1 Enlarged view of node A in
[0015] Figure 3 Front view sectional schematic diagram of the novel induction heating coil of the embodiment of the utility model;
[0016] Figure 4 The novel induction heating coil of the embodiment of the utility model Figure 3 Enlarged view of node B in
[0017] (1 - Main induction coil, 2 - Secondary coil, 3 - Wiring device, 4 - Refrigerant pipe, 5 - Fixing plate, 6 - Bracket, 7 - Groove, 8 - Pressing plate, 9 - Screw, 10 - Fastening nut) Detailed Embodiment
[0018] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.
[0019] As Figures 1 to 4 shown in the embodiment of the novel induction heating coil of the present utility model, the novel induction heating coil includes a spiral main induction coil 1, and a secondary coil 2 with the same direction is cross - arranged between the pitches of the main induction coil 1. The pitch of the secondary coil 2 is the same as that of the main induction coil 1. The main induction coil 1 and the secondary coil 2 are respectively connected with a wiring device 3, and the current directions of the main induction coil 1 and the secondary coil 2 are the same.
[0020] Specifically, the wiring devices 3 of the main induction coil 1 and the secondary coil 2 are respectively connected to different power supplies, so that the current directions of the main induction coil 1 and the secondary coil 2 are the same. When the main induction coil 1 and the secondary coil 2 work simultaneously, the effective pitch decreases. When the secondary coil 2 does not participate in the work, the effective pitch is the same as the pitch of the main induction coil 1. By whether the secondary coil 2 participates, the effective pitch of the induction coil is adjusted, so that the induction heating coil meets different applicable environments, avoiding coil damage caused by forced pitch adjustment and affecting the service life of the induction coil.
[0021] In an embodiment of the present application, preferably, both the main induction coil 1 and the secondary coil 2 are of a hollow structure. The cavities of the main induction coil 1 and the secondary coil 2 are connected to a refrigerant pipe 4 for passing a coolant into the hollow coil to cool down the heat of the coil itself and reduce energy consumption loss.
[0022] In an embodiment of the present application, preferably, fixing plates 5 are provided on the main induction coil 1 and the secondary coil 2. A bracket 6 is fixedly connected to the fixing plate 5. The bracket 6 extends into the gap between the main induction coil 1 and the secondary coil 2. A groove 7 is provided at one end of the bracket 6. A pressing plate 8 is provided in the groove 7. A screw rod 9 is fixedly connected to the pressing plate 8. Holes (not marked in the figure) for the screw rod 9 to pass through are provided on the bracket 6 and the fixing plate 5. A fastening nut 10 is threadedly connected to the screw rod 9 on the fixing plate 5 to fix the distance between the main induction coil 1 and the secondary coil 2 and avoid distance deformation. Specifically, the bracket 6 is extended into the pitch gap to press the pressing plate 8 into the groove 7, and the fastening nut 10 outside the fixing plate 5 is tightened. This fixing method can avoid welding deformation and fastening deformation compared with the traditional method of welding screw rods on the outer wall of the coil.
[0023] In an embodiment of the present application, preferably, the number of the secondary coils 2 is one or more for more precise control of the effective pitch.
[0024] In an embodiment of the present application, preferably, an insulating layer (not shown in the figure) is coated on the main induction coil 1 and the secondary coil 2 to avoid short circuits.
[0025] In an embodiment of the present application, preferably, the fixing plate 5, the bracket 6 and the pressing plate 8 are all made of insulating materials to avoid short circuits and electric leakage.
[0026] In summary, for the novel induction heating coil in the above embodiments of the present utility model, specifically, one or more secondary coils 2 are arranged crosswise within one pitch of a primary induction coil 1. The distance between the coils is fixed and spaced by a fixing plate 5, and a pressing plate 8 and the fixing plate 5 are fixed. The wiring devices 3 of the primary induction coil 1 and the secondary coils 2 are respectively connected to different power supplies so that the current directions of the primary induction coil 1 and the secondary coils 2 are the same. When the primary induction coil 1 and the secondary coils 2 work simultaneously, the effective pitch is reduced. When the secondary coils 2 do not participate in the work, the effective pitch is the same as the pitch of the primary induction coil 1. By whether the secondary coils 2 participate or the number of participating coils, the effective pitch of the induction coil is adjusted, enabling the induction heating coil to meet different applicable environments, avoiding coil damage caused by forced pitch adjustment and affecting the service life of the induction coil.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims
1. A novel induction heating coil, characterized in that, It includes a spiral main induction coil, and sub-coils with the same direction are arranged crosswise between the pitches of the main induction coil. The pitch of the sub-coil is the same as that of the main induction coil. The main induction coil and the sub-coil are respectively connected with wiring devices, and the current directions of the main induction coil and the sub-coil are the same.
2. The novel induction heating coil according to claim 1, wherein: Both the main induction coil and the sub-coil are of hollow structure, and the cavities of the main induction coil and the sub-coil are connected with a refrigerant pipe.
3. The novel induction heating coil according to claim 2, wherein: Fixing plates are provided on the main induction coil and the sub-coil. A bracket is fixedly connected to the fixing plate. The bracket extends into the gap between the main induction coil and the sub-coil. A groove is provided at one end of the bracket, and a pressing plate is arranged in the groove. A screw rod is fixedly connected to the pressing plate. Holes for the screw rod to pass through are provided on the bracket and the fixing plate, and a fastening nut is threadedly connected to the screw rod on the fixing plate.
4. The novel induction heating coil according to claim 1, wherein: The number of the sub-coils is one or more.
5. The novel induction heating coil according to claim 1, wherein: Insulating layers are coated on the main induction coil and the sub-coil.
6. The novel induction heating coil according to claim 3, wherein: The fixing plate, the bracket and the pressing plate are all made of insulating materials.