Annular transformer

Abstract

The invention discloses an annular transformer, which belongs to the technical field of electromagnetic induction and comprises an annular magnetic core. The primary side coil is uniformly wound on the annular magnetic core; the secondary coil is uniformly wound on the annular magnetic core; an output end, wherein the primary coil is connected to the output end; the secondary side coil is connected to the second output end; wherein the primary side coil is coupled with the secondary side coil. By adopting the annular magnetic core, the uniformly wound primary side coil and the uniformly wound secondary side coil, high-efficiency energy transmission and tight magnetic coupling are realized, energy loss is reduced, the secondary side coil is connected with a load, such as a heating coil, so that high-frequency and large-current driving the heating coil can be determined to come from the transformer, namely a high-frequency transformer; and a complete energy transfer path is formed.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic induction technology, and specifically relates to a toroidal transformer. Background Technology

[0002] Transformers, as core components for electrical energy conversion and transmission, are widely used in power systems, industrial equipment, and electronic devices. Traditional transformers typically employ E-type, C-type, or R-type core structures, achieving voltage transformation through electromagnetic induction between the primary and secondary windings. Although these structures are technically mature, they still have a series of inherent limitations in terms of efficiency, size, heat dissipation, and electromagnetic compatibility.

[0003] There is an urgent need for a transformer that is small in size, has high-efficiency energy transmission, tight magnetic coupling, and can reduce energy loss. Summary of the Invention

[0004] To address the aforementioned problems, the primary objective of this invention is to provide a toroidal transformer that is small in size, has high-efficiency energy transmission, tight magnetic coupling, and can reduce energy loss.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] This invention provides a toroidal transformer, comprising:

[0007] Toroidal magnetic core;

[0008] The primary coil is uniformly wound around the toroidal magnetic core;

[0009] The secondary coil is uniformly wound around the toroidal magnetic core;

[0010] One output terminal, the primary coil is connected to the output terminal;

[0011] The secondary coil is connected to the two output terminals.

[0012] The primary coil is coupled to the secondary coil.

[0013] By employing a toroidal magnetic core, a uniformly wound primary coil, and a uniformly wound secondary coil, efficient energy transmission and tight magnetic coupling are achieved, reducing energy loss. By connecting the load, such as a heating coil, through the secondary coil, it can be established that the high-frequency, high-current driving the heating coil originates from the transformer, i.e., the high-frequency transformer, thus forming a complete energy transfer path.

[0014] Furthermore, both the output end and the output end are annular plates, and they are arranged in a concentric ring shape, forming an isolation gap between them. This concentric ring shape makes efficient use of space, and the resulting isolation gap not only ensures the normal operation of the transformer but can also be used for wiring and passage through other structures when necessary.

[0015] Furthermore, both output terminals are located on the same side of the toroidal core. This arrangement allows for convenient installation of a load on one end of the toroidal transformer, while the other end can accommodate a control module or power supply.

[0016] Furthermore, the diameter of one output end is larger than the diameter of the other two output ends, and the diameter of one output end is smaller than the diameter of the toroidal core. These dimensional settings facilitate the gradual mounting of the primary and secondary coils, and also reduce the overall size, resulting in a compact structure.

[0017] Furthermore, the toroidal transformer also includes a heating coil, which is connected to the secondary coil via its output terminals. The heating coil enables the toroidal transformer to have a heating function; magnetic induction heating can be achieved simply by installing a magnetic induction component on the heating coil.

[0018] Furthermore, the toroidal transformer also includes a heating element, which is positioned within the alternating magnetic field generated by the heating coil.

[0019] Furthermore, the heated component includes:

[0020] The heating layer is positioned within the alternating magnetic field generated by the heating coil;

[0021] A heat-conducting layer is disposed on the inner periphery of the heating layer.

[0022] By wrapping the heating layer around the heat-conducting layer and placing the heating layer within the alternating magnetic field generated by the heating coil, the heating layer can directly and efficiently absorb the energy of the alternating magnetic field and convert it into heat energy. Then, the heat is quickly and evenly transferred axially to the soldering iron tip by the internal heat-conducting layer. This achieves the separation and synergy of external heating and internal heat conduction, and optimizes the heat transfer efficiency.

[0023] Furthermore, the heat-conducting layer is a copper layer. By limiting the heat-conducting layer to copper, the extremely high thermal conductivity of copper is utilized, which can transfer the heat generated by the heating layer to the soldering iron tip with almost no delay. This ensures that the soldering iron tip responds quickly and has a uniform temperature distribution, avoiding localized overheating.

[0024] Furthermore, the heating layer is a magnetic stainless steel layer. By defining the heating layer as a magnetic stainless steel layer, it is possible to generate a strong eddy current effect and hysteresis loss in a high-frequency alternating magnetic field due to the good ferromagnetism and suitable resistivity of magnetic stainless steel, thereby achieving efficient heating. At the same time, magnetic stainless steel itself has a certain high-temperature strength and corrosion resistance, ensuring the service life of the heated component.

[0025] The beneficial effects of this invention are as follows: Compared with the prior art, the toroidal transformer provided in this application achieves efficient energy transmission and tight magnetic coupling by using a toroidal magnetic core, a uniformly wound primary coil, and a uniformly wound secondary coil, thereby reducing energy loss. By connecting the load, such as a heating coil, through the secondary coil, it can be established that the high-frequency, high-current driving the heating coil originates from the transformer, i.e., the high-frequency transformer, thus forming a complete energy transfer path. Attached Figure Description

[0026] Figure 1 This is a 3D schematic diagram of a toroidal transformer used in a handheld electromagnetic induction soldering iron.

[0027] Figure 2 yes Figure 1 Internal structure diagram.

[0028] Figure 3 yes Figure 2 A schematic diagram of the assembly of the transformer and the heating coil.

[0029] Figure 4 yes Figure 3 A cross-sectional view along the AA direction.

[0030] In the diagram: 10. Housing; 20. Transformer; 21. Toroidal core; 22. Primary coil; 23. Secondary coil; 24. Output terminal 1; 25. Output terminal 2; 30. Heating coil; 40. Heated component; 41. Heating layer; 42. Heat-conducting layer; 43. Mounting part; 60. Soldering tip; 70. Switch; 80. Circuit board. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] To achieve the above objectives, the technical solution of the present invention is as follows:

[0033] See Figures 1-4 As shown, this embodiment provides a handheld electromagnetic induction soldering iron, including:

[0034] The housing 10 has a receiving cavity;

[0035] A toroidal transformer 20 is disposed within the receiving cavity;

[0036] Heating coil 30 is disposed inside the receiving cavity and on one side of toroidal transformer 20;

[0037] The heated element 40 is disposed within the receiving cavity and within the alternating magnetic field generated by the heating coil 30;

[0038] Soldering tip 60 is connected to the end of the heated component 40 away from the toroidal transformer 20 and extends outside the housing 10.

[0039] In this embodiment, the toroidal transformer 20 includes:

[0040] 21-ring magnetic core;

[0041] The primary coil 22 is evenly wound around the toroidal magnetic core 21;

[0042] The secondary coil 23 is evenly wound around the toroidal magnetic core 21;

[0043] One output terminal 24, the primary coil 22 is connected to the output terminal 24;

[0044] The output terminals 25 are connected to the secondary coil 23.

[0045] The primary coil 22 is coupled to the secondary coil 23; the secondary coil 23 is connected to the heating coil 30.

[0046] By employing a toroidal magnetic core 21, a uniformly wound primary coil 22, and a uniformly wound secondary coil 23, efficient energy transmission and tight magnetic coupling are achieved, reducing energy loss. The heating coil 30 is connected through the secondary coil 23, establishing that the high-frequency, high-current driving the heating coil 30 originates from the toroidal transformer 20, i.e., the high-frequency transformer, thus forming a complete energy transfer path.

[0047] In this embodiment, both the output end and the output end are annular plates, and they are arranged in a concentric ring shape, forming an isolation gap between them. This concentric ring shape makes efficient use of space, and the resulting isolation gap not only ensures the normal operation of the transformer but can also be used for wiring and passage through other structures when necessary.

[0048] In this embodiment, both output terminals are located on the same side of the toroidal core. Having both output terminals on the same side of the toroidal core allows for convenient installation of a load at one end of the toroidal transformer, while the other end can house a control module or power supply.

[0049] In this embodiment, the diameter of one output end is larger than the diameter of the other two output ends, and the diameter of one output end is smaller than the diameter of the toroidal core. This dimensional arrangement facilitates the gradual mounting of the primary and secondary coils, and also reduces the overall size, resulting in a compact structure.

[0050] In this embodiment, the heat-receiving element 40 includes:

[0051] The heating layer 41 is disposed within the alternating magnetic field generated by the heating coil 30;

[0052] The heat-conducting layer 42 is disposed on the inner periphery of the heat-conducting layer 41.

[0053] By covering the outer periphery of the heat-conducting layer 42 with the heating layer 41 and placing the heating layer 41 within the alternating magnetic field generated by the heating coil 30, the heating layer 41 can absorb the energy of the alternating magnetic field directly and efficiently and convert it into heat energy. Then, the heat is quickly and evenly transferred axially to the soldering tip 60 by the internal heat-conducting layer 42, realizing the functional separation and synergy of external heating and internal heat conduction, and optimizing the heat transfer efficiency.

[0054] In this embodiment, the thermally conductive layer 42 is a copper layer.

[0055] By defining the heat-conducting layer 42 as a copper layer, the extremely high thermal conductivity of copper is utilized to transfer the heat generated by the heating layer 41 to the soldering tip 60 with almost no delay, ensuring that the soldering tip 60 responds quickly and has a uniform temperature distribution, thus avoiding local overheating.

[0056] In this embodiment, the heating layer 41 is a magnetic stainless steel layer.

[0057] By defining the heating layer 41 as a magnetic stainless steel layer, the magnetic stainless steel has good ferromagnetism and suitable resistivity, which can generate strong eddy current effect and hysteresis loss in a high-frequency alternating magnetic field, thus generating heat efficiently; at the same time, the magnetic stainless steel itself has a certain high-temperature strength and corrosion resistance, ensuring the service life of the heated component 40.

[0058] In this embodiment, the heat-conducting layer 42 is provided with a mounting part 43, which is recessed from one end of the heat-conducting layer 42 away from the toroidal transformer 20 toward the interior of the heat-conducting layer 42 to form the mounting part 43, which is used to mount the soldering iron tip 60.

[0059] The mounting part 43 is specifically designed as a blind mounting hole. By setting the mounting part 43, a stable and reliable mechanical connection and a large-area thermal contact between the soldering tip 60 and the heated component 40 are achieved, ensuring efficient heat transfer from the heat-conducting layer 42 to the soldering tip 60, while also facilitating the replacement and maintenance of the soldering tip 60.

[0060] In this embodiment, it also includes:

[0061] A temperature sensor is disposed on the thermally conductive layer 42 and close to the mounting part 43.

[0062] By setting a temperature sensor and placing it close to the mounting part 43, the temperature of the part closest to the working end, i.e. the soldering tip 60, can be monitored in real time and accurately. This provides a key feedback signal for subsequent precise temperature control and is the basis for achieving constant temperature control.

[0063] In this embodiment, it also includes:

[0064] The switch 70 is located in the housing 10 and includes power-on command, power-off command, and temperature adjustment command.

[0065] By setting up a multi-functional switch 70, an intuitive and convenient human-machine interface is provided for users, enabling them to directly control the start-up and shutdown of the equipment and the operating temperature, thereby improving the ease of use and functionality of the product.

[0066] In this embodiment, it also includes:

[0067] Circuit board 80 is located inside the receiving cavity and connects primary coil 22, temperature sensor and switch 70.

[0068] The circuit board 80 is connected to the primary coil 22, the temperature sensor, and the switch 70 respectively, forming a complete closed-loop automatic control system, which upgrades the soldering iron from a simple heating tool to an intelligent and controllable device.

[0069] In this embodiment, the circuit board 80 further includes:

[0070] The microprocessor 81 is used to adjust the output power of the heating coil 30 and perform constant temperature control of the heating element 40 and the soldering iron tip 60 based on the temperature of the soldering iron tip 60 or the heated element 40 monitored by the temperature sensor, or based on any one of the power-on command, power-off command, or temperature adjustment command set by the user via the switch 70.

[0071] The circuit board 80 can process temperature signals and user commands through temperature sensors and switches 70; based on the processing results, the microprocessor 81 can dynamically adjust the power output to the heating coil 30; thus achieving precise temperature control of the heated component 40 and the soldering iron tip 60.

[0072] In this embodiment, the device includes: a housing 10 with a receiving cavity; a toroidal transformer 20 disposed within the receiving cavity; a heating coil 30 disposed within the receiving cavity and on one side of the transformer 20; a heating element 40 disposed within the receiving cavity and within the alternating magnetic field generated by the heating coil 30; and a soldering iron tip 60 connected to the end of the heating element 40 away from the transformer 20 and extending outside the housing 10. By integrating the transformer 20, the heating coil 30, and the heating element 40 within the receiving cavity of the housing 10, a convenient device design is achieved. Utilizing the principle of electromagnetic induction, the heating coil 30 directly heats the heating element 40 non-contactly, achieving rapid heating and efficient energy conversion. Since the soldering iron tip 60 itself does not carry a large current, the overall structure is safer, and the soldering iron tip 60 can be easily extended outside the housing 10 for convenient replacement and operation.

[0073] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A toroidal transformer, characterized by, The annular transformer comprises: an annular magnetic core; a primary coil uniformly wound on the annular magnetic core; a secondary coil uniformly wound on the annular magnetic core; an output one end, to which the primary coil is connected; an output two end, to which the secondary coil is connected; wherein the primary coil is coupled with the secondary coil.

2. A toroidal transformer as claimed in claim 1, characterised in that, The output one end and the output two end are both annular plates and are concentrically distributed, and an isolation gap is formed between the output one end and the output two end.

3. A toroidal transformer as claimed in claim 2, characterised in that, The output one end and the output two end are both located on the same side of the annular magnetic core.

4. A toroidal transformer as claimed in claim 2, characterised in that, The diameter of the output one end is greater than the diameter of the output two end, and the diameter of the output one end is less than the diameter of the annular magnetic core.

5. A toroidal transformer as claimed in claim 2, characterised in that, The annular transformer further comprises a heating coil, and the secondary coil is connected to the output two end through the heating coil.

6. A toroidal transformer as claimed in claim 5, characterised in that The annular transformer further comprises a heated member arranged in an alternating magnetic field generated by the heating coil.

7. A toroidal transformer as claimed in claim 6, characterised in that The heated member comprises: a heating layer arranged in the alternating magnetic field generated by the heating coil; a heat-conducting layer arranged at the inner periphery of the heating layer.

8. A toroidal transformer as claimed in claim 7, characterised in that, The heat-conducting layer is a copper layer.

9. A toroidal transformer as claimed in claim 8, characterised in that, The heating layer is a magnetic stainless steel layer.

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