Electro-thermal conversion device based on electro-magnetic-thermal coupling effect

Abstract

The invention discloses an electro-thermal conversion device based on an electro-magnetic-thermal coupling effect, and relates to the technical field of electro-thermal conversion, the electro-thermal conversion device comprises a supporting isolation structure, an induction coil and a heated structure, the supporting isolation structure comprises a base and a support, the support is arranged on the base, the induction coil is arranged on the outer side of the support, and the heated structure is arranged on the base. The heated structure is arranged on the inner side of the support. According to the electro-thermal conversion device based on the electro-magnetic-thermal coupling effect, efficient electro-thermal conversion of electromagnetic induction and high-temperature radiation coupling is achieved through the induction coil, the energy conversion efficiency is improved, energy consumption is reduced, and the electro-thermal conversion device based on the electro-magnetic-thermal coupling effect has important significance on energy conservation and emission reduction.

Description

Technical Field

[0001] The present invention relates to the technical field of electrothermal conversion, and in particular to an electrothermal conversion device based on electro-magnetic-thermal coupling. Background Art

[0002] Currently, traditional methods for converting electricity into heat in industrial heating primarily include resistance heating and arc heating. While widely adopted, these methods have inherent limitations. Resistance heating typically uses a metal resistance wire or ribbon as the heating element, heating the material through Joule heating generated by the passage of current.

[0003] However, due to the inherent limitations of the resistor material, this heating method often has low energy conversion efficiency, resulting in unnecessary heat loss while converting a large amount of electrical energy into heat. Arc heating, on the other hand, utilizes an arc discharge between two electrodes to generate high temperatures. While this method can achieve high heating temperatures, it suffers from arc instability and uneven heating of the area, leading to low energy utilization and increased energy consumption.

[0004] Furthermore, resistance heating and arc heating equipment are prone to material aging and wear over long periods of operation due to frequent thermal expansion and contraction and the effects of high temperatures. This shortens the equipment lifespan, necessitating frequent replacement and repair, and increasing maintenance costs. Finally, traditional electrothermal conversion methods can generate harmful gases and dust during the heating process, causing some environmental pollution. Summary of the Invention

[0005] The purpose of the present invention is to provide an electrothermal conversion device based on electro-magnetic-thermal coupling to solve the problems existing in the above-mentioned prior art, improve energy conversion efficiency and reduce energy consumption.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an electrothermal conversion device based on electro-magnetic-thermal coupling, comprising: a supporting isolation structure, an induction coil and a heated structure, wherein the supporting isolation structure comprises a base and a bracket, the bracket is arranged on the base, the induction coil is arranged on the outside of the bracket, and the heated structure is arranged on the inside of the bracket.

[0008] Preferably, the supporting isolation structure is made of ceramic or quartz.

[0009] Preferably, the induction coil is fixed to the bracket by screws or buckles.

[0010] Preferably, an insulating layer is provided between the induction coil and the bracket.

[0011] Preferably, the induction coil is made of nickel-chromium alloy or iron-nickel alloy.

[0012] Preferably, a cooling water channel is provided in the bracket.

[0013] Preferably, a heat dissipation structure is provided in the bracket.

[0014] Preferably, it further comprises a first water tank and a second water tank, a heating chamber is provided inside the heated structure, the inlet of the heated structure is used to be connected to the outlet of the first water tank, and the outlet of the heated structure is connected to the inlet of the second water tank.

[0015] Preferably, a purification structure is further included, wherein the inlet of the purification structure is connected to the outlet of the first water tank, and the outlet of the purification structure is connected to the inlet of the heated structure.

[0016] Preferably, the purification structure includes a pretreatment unit, a softening treatment unit, a reverse osmosis membrane treatment unit, a deionization unit and a terminal refining unit which are sequentially arranged from the inlet of the purification structure to the outlet of the purification structure.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The electrothermal conversion device based on electro-magnetic-thermal coupling of the present invention realizes efficient electrothermal conversion by coupling electromagnetic induction and high-temperature radiation through an induction coil, thereby improving energy conversion efficiency and reducing energy consumption, which is of great significance for energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0020] Figure 1 Schematic diagram of the electrothermal conversion device based on electro-magnetic-thermal coupling of the present invention;

[0021] Figure 2 This is a graph showing energy changes in the electrothermal conversion device based on the electro-magnetic-thermal coupling of the present invention;

[0022] Figure 3 is a waveform diagram of the current at both ends of the induction coil of the present invention;

[0023] Figure 4 It is the voltage waveform diagram of both ends of the induction coil of the present invention;

[0024] Figure 5 It is a system diagram of the voltage waveform across the capacitor of the present invention;

[0025] Figure 6 It is the skin layer current waveform diagram of the present invention;

[0026] Figure 7 It is the non-skin layer current waveform diagram of the present invention;

[0027] In the figure: 1-induction coil, 2-support isolation structure, 3-heated structure, 4-purification structure, 5-water tank structure. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide an electrothermal conversion device based on electro-magnetic-thermal coupling to solve the problems existing in the above-mentioned prior art, improve energy conversion efficiency and reduce energy consumption.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 7 As shown, this embodiment provides an electrothermal conversion device based on electro-magnetic-thermal coupling, comprising: a supporting isolation structure 2, an induction coil 1, and a heated structure 3. The supporting isolation structure 2 comprises a base and a bracket, which is mounted on the base. The induction coil 1 is mounted on the outside of the bracket, and the heated structure 3 is mounted on the inside of the bracket. When the heated structure 3 is placed in the magnetic field generated by the induction coil 1, the eddy current effect and hysteresis loss convert the magnetic field into thermal energy, causing the heated structure 3 to heat up rapidly.

[0032] Specifically, in this embodiment, the induction coil 1 is connected to a high-frequency power supply via a wire. The alternating current provided by the high-frequency power supply passes through the induction coil 1, generating a varying magnetic field. A capacitor is provided between the induction coil 1 and the high-frequency power supply. Utilizing the principle of electromagnetic induction, eddy currents are generated within the heated structure 3, thereby generating heat. The induction coil 1 not only generates an electromagnetic field but also acts as a resistive heating element. To achieve efficient electrothermal conversion, the induction coil 1 is made of a high-temperature-resistant, highly conductive alloy material, such as nickel-chromium alloy or iron-nickel alloy. Conductive materials such as copper or aluminum may also be used. The induction coil 1 is spiral or in other shapes to optimize magnetic field distribution and improve electromagnetic induction efficiency.

[0033] In this embodiment, the optimal electromagnetic coupling effect is achieved by optimizing the set parameters of the induction coil 1. The magnetic field strength H is controlled by adjusting the number of turns N of the induction coil 1, the current I passing through the induction coil 1, and the length L of the induction coil 1, thereby achieving the optimal electromagnetic coupling effect. The relationship between the magnetic field strength H and the number of turns N of the induction coil 1, the current I passing through the induction coil 1, and the length L of the induction coil 1 can be expressed as:

[0034]

[0035] The selection of the induction coil 1's diameter and number of turns requires consideration of factors such as the size and shape of the heated structure 3, as well as the required heating power. The distance between the induction coil 1 and the heated structure 3 must balance electromagnetic coupling efficiency and safety distance requirements. Through theoretical calculations and experimental verification, the optimal diameter D of the induction coil 1 was determined to be 30 mm, with 80 to 100 turns, and a distance between the induction coil 1 and the heated structure 3 of 200 to 500 mm, achieving optimal electromagnetic coupling efficiency.

[0036] Specifically, simulation calculations were performed using an induction coil 1 made of copper, and the loss of the induction coil 1 was approximately 228 watts, and the eddy current loss induced by the steel pipe was approximately 29.45 kilowatts. Simulation calculations were performed using an induction coil 1 made of iron-chromium-aluminum, and the wire loss of the induction coil 1 was approximately 5.4 kilowatts, the eddy current and hysteresis loss induced by the steel pipe was approximately 24.38 kilowatts, and the total loss (heat source) was approximately 29.8 kilowatts.

[0037] In the present embodiment, the main function of the supporting isolation structure 2 is to fix the induction coil 1 and ensure that the induction coil 1 maintains appropriate electrical isolation from the surrounding environment. The supporting isolation structure 2 is made of materials with high temperature resistance, good insulation performance, high resistivity and low dielectric loss characteristics, such as ceramics, quartz, etc., which can effectively prevent current leakage even under high pressure conditions to ensure the safety and reliability of the system. In addition, when selecting the material of the supporting isolation structure 2, it is also necessary to consider the compatibility of its thermal expansion coefficient with the material of the induction coil 1 to ensure the stability and reliability of the structure under different temperature conditions to reduce the stress concentration and deformation problems caused by thermal expansion and contraction. The choice of material also needs to take into account cost factors to meet the needs of commercial applications. The design of the supporting isolation structure 2 also needs to consider factors that are easy to install and maintain.

[0038] In this embodiment, the bracket is made of ceramic or quartz, for example, a ceramic tube or quartz tube. This bracket provides sufficient mechanical strength without affecting the effective transmission of the electromagnetic field. An insulating layer, made of mica, is provided between the induction coil 1 and the bracket. This layer further enhances electrical isolation and prevents partial discharge caused by surface defects. The induction coil 1 is secured to the bracket using screws or clips made of insulating material to prevent displacement of the induction coil 1 during operation.

[0039] This embodiment rationally arranges the relative positions of various components to maximize the minimum air gap between the induction coil 1 and other conductors, thereby increasing the breakdown voltage threshold. All sharp corners of the structure are rounded to reduce electric field concentration points and mitigate the risk of surface flashover.

[0040] In this embodiment, the heated structure 3 is a metal part, a liquid container, or other object to be heated. When the heated structure 3 is placed in the magnetic field generated by the induction coil 1, the heated structure 3 will heat up rapidly due to eddy current effect and hysteresis loss.

[0041] When the heated structure 3 is a liquid container, this embodiment further includes a water tank structure 5 and a purification structure 4. The water tank structure 5 comprises a first water tank and a second water tank. A heating chamber is provided within the heated structure 3. The inlet of the purification structure 4 is connected to the outlet of the first water tank, the outlet of the purification structure 4 is connected to the inlet of the heated structure 3, and the outlet of the heated structure 3 is connected to the inlet of the second water tank. After being purified by the purification structure 4, the water in the first water tank enters the heated structure 3, where it is heated by the induction coil 1. The heated water then enters the second water tank and, when needed, flows from the second water tank into the other structures.

[0042] In this embodiment, the purification structure 4 is used to improve the water quality. The purification structure 4 includes a pretreatment unit, a softening treatment unit, a reverse osmosis membrane treatment unit, a deionization unit and a terminal refining unit, which are arranged in sequence from the inlet of the purification structure 4 to the outlet of the purification structure 4. The pretreatment unit, the softening treatment unit, the reverse osmosis membrane treatment unit, the deionization unit and the terminal refining unit are all existing technologies. The pretreatment unit uses a mechanical filter (such as a filter filled with sand and activated carbon) to preliminarily remove large particles and organic matter; the softening treatment unit uses a cation exchange resin to remove calcium and magnesium ions to reduce water hardness; the reverse osmosis membrane treatment unit uses a semipermeable membrane to separate water and dissolved solids under high pressure conditions, and further removes inorganic salts and microorganisms; the deionization unit combines mixed bed or continuous electrodeionization (CDI / EDI) technology to completely remove the remaining charged particles; the terminal refining unit can be configured with ultraviolet sterilization lamps (UV) or ultrafiltration (UF) as needed to meet the highest standards of water quality requirements. The purification structure 4 can be automatically managed by a PLC control system, supports unattended operation, and has a fault alarm function. Energy-saving pump units and optimized process flows can also be used to reduce energy consumption and achieve partial wastewater recycling. The purification structure 4 adopts a modular design for easy installation and subsequent maintenance, and key components are made of corrosion-resistant materials to extend their service life.

[0043] In this embodiment, for some application scenarios with extremely high working temperatures, a cooling water channel and / or a heat dissipation structure is provided in the heated structure 3 to help control the overall temperature and extend the service life.

[0044] To further improve the efficiency and stability of the system, this embodiment may also integrate a temperature control system. The temperature control system can monitor the operating temperature of the induction coil 1 in real time and automatically adjust the current output based on the feedback to ensure the safety of the system operation and prevent equipment damage due to overheating.

[0045] This embodiment achieves efficient electrothermal conversion by coupling electromagnetic induction with high-temperature radiation by optimizing the induction coil 1, adopting a high-temperature-resistant, highly conductive alloy material, and combining it with a supporting isolation structure 2. It also has good stability and reliability, solves many problems existing in traditional electrothermal conversion technology, and has important application prospects.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An electrothermal conversion device based on electro-magnetic-thermal coupling, characterized in that: include: A supporting isolation structure, an induction coil and a heated structure, wherein the supporting isolation structure comprises a base and a bracket, the bracket is arranged on the base, the induction coil is arranged on the outside of the bracket, and the heated structure is arranged on the inside of the bracket.

2. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 1 is characterized in that: The supporting isolation structure is made of ceramic or quartz.

3. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2 is characterized in that: The induction coil is fixed on the bracket by screws or buckles.

4. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2 is characterized in that: An insulating layer is arranged between the induction coil and the bracket.

5. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 1 is characterized in that: The induction coil is made of nickel-chromium alloy or iron-nickel alloy.

6. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2 is characterized in that: A cooling water channel is arranged in the bracket.

7. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 2 is characterized in that: A heat dissipation structure is arranged in the bracket.

8. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 1 is characterized in that: It also includes a first water tank and a second water tank. A heating chamber is provided inside the heated structure. The inlet of the heated structure is used to be connected to the outlet of the first water tank, and the outlet of the heated structure is connected to the inlet of the second water tank.

9. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 8 is characterized in that: It also includes a purification structure, the inlet of the purification structure is connected to the outlet of the first water tank, and the outlet of the purification structure is connected to the inlet of the heated structure.

10. The electrothermal conversion device based on electro-magnetic-thermal coupling according to claim 9, characterized in that: The purification structure comprises a pretreatment unit, a softening treatment unit, a reverse osmosis membrane treatment unit, a deionization unit and a terminal refining unit which are sequentially arranged from the inlet of the purification structure to the outlet of the purification structure.

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