WO2024088270A1 - 一种面积导向的裸露式低电压大电流加热装置的制造方法 - Google Patents

一种面积导向的裸露式低电压大电流加热装置的制造方法 Download PDF

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WO2024088270A1
WO2024088270A1 PCT/CN2023/126290 CN2023126290W WO2024088270A1 WO 2024088270 A1 WO2024088270 A1 WO 2024088270A1 CN 2023126290 W CN2023126290 W CN 2023126290W WO 2024088270 A1 WO2024088270 A1 WO 2024088270A1
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Prior art keywords
heating
area
zone
available
heating element
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PCT/CN2023/126290
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English (en)
French (fr)
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董文利
黄波
何龙起
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耀能（上海）节能科技股份有限公司
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Publication of WO2024088270A1 publication Critical patent/WO2024088270A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/10—Numerical modelling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/06—Power analysis or power optimisation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/08—Thermal analysis or thermal optimisation

Definitions

  • the present application relates to the field of heating, and in particular to a method for manufacturing a low-voltage, high-current labyrinth heating device.
  • resistive heating tubes and heating plates are based on 380V and 220V resistance wires for heating. They break through the thick insulation to heat the metal pipe or metal plate wrapped outside and then heat the heated object.
  • This indirect heating has large thermal resistance, small heating area of the resistance wire, low heat transfer efficiency, and is not conducive to saving electricity.
  • the disadvantages of the resistance wire heating method in traditional heating devices include:
  • the heating used in existing asphalt machines and lead melting furnaces is made of resistance wire.
  • the inner and outer surfaces of the tube or plate generate heat.
  • the heat from the inner surface (close to the heated object) is transferred to the heated object, while most of the heat from the outside is dissipated into the air, resulting in a waste of electrical energy.
  • the power density is low and cannot be adapted to some occasions that require higher temperatures
  • the thermal inertia is large and the temperature fluctuates greatly.
  • Another improved heating device uses electromagnetic induction heating, which works on the principle of magnetic field induction eddy current heating.
  • the electromagnetic induction heating coil does not generate heat, and in actual use, a certain thickness of insulation material will be wrapped around the barrel.
  • the surface temperature of the electromagnetic induction heating coil is below 60°C, and only a small amount of heat inside the barrel is radiated into the air, so that the heat loss will be greatly reduced, and the thermal efficiency will be improved, so the energy saving effect is significant.
  • the high-frequency current passes through the coil to generate a high-speed alternating magnetic field. When the magnetic field intensity reaches a certain amount, it will cause harm to the human central nervous system.
  • the purpose of the present application is to provide a method for manufacturing a low-voltage, high-current heating device that pursues maximum heat transfer area, high thermal efficiency, low heat loss, and long service life, thereby ensuring heating efficiency while improving energy-saving efficiency.
  • the present application discloses a method for manufacturing an area-oriented exposed low-voltage high-current heating device, the manufacturing method comprising the following steps:
  • Designing the heating device comprises the following sub-steps:
  • the power used for heating is determined according to the preset performance of the heat treatment equipment, and then the available heating area of the heating chamber is determined.
  • the heating chamber is the space inside the heat treatment equipment for heating, and the available heating area is the sum of the areas of the surfaces on the heating chamber that can be used for heat exchange;
  • the power and area are calculated, and the specific value of the low voltage actually used is preliminarily determined based on the big data table summarized by experience.
  • the range of the low voltage is 1V-110V;
  • the material of the heating element of the heating device is selected according to the maximum temperature or heating characteristics required to be reached when the heat treatment equipment is heated inside, and the material includes: various high-temperature resistant alloy plates such as high-temperature Hastelloy plate, nickel-based alloy plate, titanium-based alloy plate, tungsten-based alloy plate, copper-based alloy plate, various high-temperature resistant stainless steel plates such as 2520 and 800H, 904l, 310s, 309S, 304, 316L and other stainless steel plates or aluminum plates, copper plates; the heating element is composed of a single-zone heating module, and the single-zone heating module is composed of a tortuous continuous resistor; then, the heat exchange area of each available surface on the heating chamber is determined according to the thermal conductivity of the material, and the heat exchange area is the area of heat exchange between the heating module and the available surface of the heating chamber during the actual heat exchange process, and the ratio of the sum of the heat exchange areas to the available heating area is greater than 40%, preferably greater than 60%;
  • the optimal specific parameters of the single-zone heating module can be determined according to the power, available heating area and low voltage through empirical values and formulas.
  • the specific parameters include: current, current carrying capacity, length, thickness, width and spacing of the resistance of the single-zone heating module;
  • the shape of the single-zone heating module is drawn according to the thickness of the single-zone heating module, the length, width and spacing of the resistor calculated by design.
  • the shape is a shape in which the zigzag resistors are continuously spread out to the required area.
  • the shape is similar to a maze and is composed of N zigzag straight lines to ensure that the available heating area is utilized to the maximum extent;
  • the metal plate of the required thickness cut it into the required area and shape of the single zone heating module by cutting equipment, and cut screw holes at both ends of the current inlet and outlet resistors of the single zone heating module to
  • the cable is connected to the transformer, and the cutting equipment includes a laser cutting machine;
  • the heating element is in contact with the heat treatment equipment or with a non-insulating object and the fixed part is separated by an insulating layer for insulation treatment.
  • the thickness of the insulating layer is 1-10mm and the outside does not need to be wrapped with metal.
  • the sub-steps of step (1) of the design method further include steps 1-4, wherein steps 1-4 are to customize the transformer according to the specific values of the power, low voltage, and high current of the determined heating device.
  • the number of the single-zone heating modules may be greater than one depending on the available heating area.
  • the plurality of single-zone heating modules are designed to be connected in parallel or in series.
  • steps 1-3 also include: adjusting the number of the single-zone heating modules, and adaptively adjusting the width, length, thickness, spacing, and current carrying capacity of the single-zone heating module resistors to perform multiple calculations to obtain the number of single-zone heating modules with the highest efficiency.
  • the steps 1-3 further include recording specific parameters obtained from each calculation to update the empirical formula.
  • the heating device also includes a temperature control system of a zone-controlled heating device customized according to the parameters of the transformer, the number of the zone-controlled temperature control systems is less than or equal to the number of the transformers, and the method of using the heating device includes: planar contact direct heating, external contact indirect heating, internal radiation, convection heating and indirect heating using a certain medium, wherein the indirect heating using a certain medium refers to using the heating device to heat a certain medium such as a liquid or a gas, and then using the heated certain medium such as a liquid or a gas to heat the object to be heated.
  • the object of the planar contact direct heating includes solid and fluid.
  • planar contact direct heating, external contact indirect heating, internal Local radiation, convection heating and indirect heating using a medium can be used in combination according to actual work needs.
  • the inlet and outlet current ends of the low voltage and high current single zone heating module resistor are connected to the two inlet and outlet terminals of the isolation transformer with two sets of matching cables, and then the 220V or 380V power is connected to the isolation transformer with matching cables.
  • the temperature control system detects the temperature change of the object to be heated and regulates the transformer in real time to ensure accurate temperature.
  • the inlet and outlet current ends of the low voltage and high current multiple single zone heating module resistors are connected in parallel or in series with multiple sets of matching cables, and then connected to the two inlet and outlet terminals of the isolation transformer, and then the 220V or 380V power is connected to the isolation transformer with matching cables.
  • the temperature control system detects the temperature change of the object to be heated and regulates the transformer in real time to ensure temperature accuracy.
  • the heating device manufactured by the present invention has the following advantages:
  • the heating device manufactured by the present invention can increase the heat transfer area, reduce the thermal resistance and improve the thermal efficiency in the exposed type, greatly save energy consumption, and the saving ratio is at least 30%.
  • the present invention adopts area-oriented low-pressure heating, the heat transfer area can be expanded to the maximum extent, and its insulating material can be very thin, with small heat transfer resistance, large heat transfer area and high heat transfer efficiency.
  • This makes the temperature of the heating section close to the working temperature, the heat transfer speed is fast, and the heat generated and the heat absorbed by the object to be heated basically reach 1 to 0.9 or more, and the consumption in the heat transfer process is less.
  • the use of a low-voltage isolation transformer makes it highly safe, and even if there is leakage, there will be no risk of electric shock. Low-voltage heating can improve the efficiency of heat utilization and save power costs, making it more economical.
  • the heating device designed and manufactured by the present invention can ensure that the current carrying capacity of the control resistor is not greater than 10A/ mm2 , thereby greatly improving the service life of the heating device.
  • the design method of the present invention is area-oriented, and uses a design method that adjusts low voltage and high current parameters to ensure the heat transfer area. It can ensure that the available heating area is fully utilized, thereby ensuring the highest heat transfer efficiency.
  • the present invention is also beneficial to improving the working environment of the heating device and reducing the working temperature of the workshop.
  • the characteristics of traditional heating determine that it cannot keep heat tightly, and the dissipated heat energy makes the working environment of the workshop bad in summer.
  • This heating device has low voltage, large heat transfer area, high heat transfer efficiency, and low voltage characteristics. It can keep heat tightly without much heat dissipation, so it will not cause a sharp rise in the working environment temperature.
  • feature A+B+C is disclosed
  • feature A+B+D+E is disclosed
  • features C and D are equivalent technical means that play the same role.
  • Feature E can be combined with feature C technically. Then, the solution of A+B+C+D should not be deemed to have been recorded because it is technically infeasible, and the solution of A+B+C+E should be deemed to have been recorded.
  • FIG1 is a schematic diagram of the overall structure of a heating device manufactured by the manufacturing method of the present invention.
  • FIG. 2 is a schematic structural diagram of a heating element designed according to a first embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a heating element designed according to a second embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a heating element designed according to a third embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a heating element designed according to a fourth embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a heating element designed according to a fifth embodiment of the present invention.
  • this application designs a corresponding low-voltage and high-current heating module according to the available heating area of the heat treatment equipment using this heating device, ensuring that the heat exchange area is maximized, thereby ensuring the improvement of heat exchange efficiency and energy saving efficiency, and because this design uses a low-voltage, high-current, exposed heating method, it does not require a very thick anti-breakdown insulation package and an additional metal shell package, which reduces thermal resistance and improves thermal efficiency.
  • the area-oriented exposed low-voltage and high-current heating device described in the present invention is shown in Figure 1, which includes: a heating element 2, a temperature control device 3, a heat treatment equipment 4, and an isolation transformer 5.
  • the length, width, and spacing of the heating element 2 are designed according to the available heating area and the design voltage of the heat treatment equipment 4 through empirical formulas and are installed on the heat treatment equipment 4.
  • the connection is insulated.
  • the heat treatment equipment 4 is connected to the isolation transformer 5.
  • the isolation transformer 5 is designed according to the specific value of the low voltage used by the heat treatment equipment 4.
  • the isolation transformer 5 is connected to the temperature control device 3.
  • the temperature control device 3 is used to monitor the specific heating value of the heating element 2 to ensure the safety and stability of the heating process.
  • FIG2 The design of the heating element of an area-oriented exposed low-voltage high-current heating device of the present invention is shown in FIG2 , and the design steps are as follows:
  • the power and The available heating area is used to determine the specific value of the low voltage and high current actually used.
  • the preset power of the heat treatment equipment in this embodiment is 5.6kw, and 20V is selected as the low voltage value used in this embodiment through experience.
  • the available heating area of the heating chamber is determined. In this embodiment, the available heating area is about 0.29m2 ;
  • the material of the heating element of the heating device (hereinafter also referred to as the single-zone heating element 2) is selected according to the maximum temperature or heating characteristics that can be achieved when the heat treatment equipment is heated inside. Since the maximum heating temperature in this embodiment can reach 280°C, the material selected in this embodiment is a high-temperature Hastelloy plate; then, the heat exchange area of each available surface on the heating chamber is determined according to the thermal conductivity of the material.
  • the heat exchange area is the area of heat exchange between the heating element and the available surface of the heating chamber during the actual heat exchange process.
  • the ratio of the sum of the heat exchange areas to the available heating area is greater than 40%, preferably greater than 60%; the heat exchange area in this embodiment is approximately 65%.
  • the optimal specific parameters of the single-zone heating element 2 can be determined by empirical values and formulas based on the power, available heating area and low voltage.
  • the specific values of the heating element 2 after calculation are: the thickness of the heating element 2 is 2.8mm, and the meandering continuous resistance width is 10mm. After calculation, it can be obtained that in this embodiment, by using the low-voltage and high-current heating device manufactured by the manufacturing method of the present invention, the power saving rate can reach about 40%.
  • FIG3 The design of the heating element 2 of an area-oriented exposed low-voltage high-current heating device of the present invention is shown in FIG3 , and the design steps are as follows:
  • the power used for heating is determined according to the preset performance of the heat treatment equipment 4, so as to determine the specific value of the low voltage and high current actually used.
  • the preset power of the heat treatment equipment is 25kw, and 45V is selected as the low voltage value used in this embodiment through experience.
  • the available heating area of the heating chamber is determined. In this embodiment, the available heating area is about 6.64m2 ;
  • the material of the heating element of the heating device (hereinafter also referred to as the single-zone heating element 2) is selected according to the maximum temperature or heating characteristics that can be achieved when the heat treatment equipment is heated inside. Since the maximum heating temperature in this embodiment can reach 550°C, the material selected in this embodiment is 2520 stainless steel resistant to 1500°C high temperature; then, the heat exchange area of each available surface on the heating chamber is determined according to the thermal conductivity of the material.
  • the heat exchange area is the area of heat exchange between the heating element 2 and the available surface of the heating chamber during the actual heat exchange process.
  • the ratio of the sum of the heat exchange areas to the available heating area is greater than 40%, preferably greater than 60%; the heat exchange area in this embodiment is about 70%.
  • the specific parameters of the optimal single-zone heating element 2 can be determined by empirical values and formulas based on the power, available heating area and low voltage.
  • this embodiment since the heat treatment equipment 4 is annular, this embodiment selects three parallel single-zone heating elements 2 as the final design.
  • the specific values of the heating element 2 calculated after the parameters are substituted are: the thickness of the heating element 2 is 3.9mm, and the zigzag resistance width is 27mm. After calculation, it can be obtained that in this embodiment, by using the low-voltage and high-current heating device manufactured by the manufacturing method described in the present invention, the power saving rate can reach about 50%
  • FIG4 The design of the heating element 2 of an area-oriented exposed low-voltage high-current heating device of the present invention is shown in FIG4 , and the design steps are as follows:
  • the power used for heating is determined according to the preset performance of the heat treatment equipment 4 to determine the specific value of the low voltage and high current actually used.
  • the shape of the heat treatment equipment in this embodiment is irregular, so the middle and the two sides are designed separately.
  • the preset power of the single-zone heating element 2 in the middle is 6kw, and 40V is selected as the low voltage value used in this embodiment through experience.
  • the preset power of the single-zone heating elements 2 on both sides is 17.3kw, and 60V is selected as the low voltage value used through experience.
  • the available heating area of the heating chamber is determined.
  • the available heating area in this embodiment is about 5.5m2 ;
  • the material of the heating element of the heating device (hereinafter also referred to as the single-zone heating element 2) is selected according to the maximum temperature or heating characteristics that can be achieved when the heat treatment equipment is heated. Since the maximum heating temperature in this embodiment can reach 200°C, the material selected in this embodiment is 904L; then, the heat exchange area of each available surface on the heating chamber is determined according to the thermal conductivity of the material.
  • the heat exchange area is the area of heat exchange between the heating element and the available surface of the heating chamber during the actual heat exchange process.
  • the ratio of the sum of the heat exchange areas to the available heating area is greater than 40%, preferably greater than 60%; the heat exchange area in this embodiment is about 50%.
  • the optimal specific parameters of the single-zone heating element 2 can be determined by empirical values and formulas according to the power, available heating area and low voltage.
  • the specific values of the single-zone heating element 2 after calculation are: The thickness of the zone heating element 2 is 8 mm, the meandering resistance width is 36 mm, and the thickness of the single zone heating element 2 on both sides is 10 mm, and the meandering resistance width is 18.8 mm. After calculation, it can be obtained that in this embodiment, by using the low-voltage and high-current heating device manufactured by the manufacturing method of the present invention, the power saving rate can reach about 50%.
  • FIG5 The design of the heating element of an area-oriented exposed low-voltage and high-current heating device of the present invention is shown in FIG5 , and the design steps are as follows:
  • the power used for heating is determined according to the preset performance of the heat treatment equipment 4 to determine the specific value of the low voltage and high current actually used.
  • the shape of the heat treatment equipment in this embodiment is a rectangular parallelepiped, and the preset power of the entire rectangular parallelepiped is 90KW. Since the shape of the internal heating chamber is also three small rectangular parallelepipeds, one side of the three small rectangular parallelepipeds is designed as an available heating surface.
  • the power of the three single-zone heating elements 2 of the three small rectangular parallelepipeds is set to 30KW. 35V is selected as the low voltage value used in this embodiment through experience. After determining the low voltage value, the available heating area of the heating chamber is determined. The available heating area in this embodiment is about 9m2 ;
  • the material of the heating element of the heating device (hereinafter also referred to as the single-zone heating element 2) is selected according to the maximum temperature or heating characteristics that can be achieved when the heat treatment equipment is heated inside. Since the maximum heating temperature in this embodiment can reach 450°C, the material selected in this embodiment is a nickel-based alloy; then, the heat exchange area of each available surface on the heating chamber is determined according to the thermal conductivity of the material.
  • the heat exchange area is the area of heat exchange between the heating element and the available surface of the heating chamber during the actual heat exchange process.
  • the ratio of the sum of the heat exchange areas to the available heating area is greater than 40%, preferably greater than 60%; the heat exchange area in this embodiment is about 80%.
  • the optimal specific parameters of the single-zone heating element 2 can be determined by empirical values and formulas according to the power, available heating area and low voltage.
  • the specific values of the three single-zone heating elements 2 after calculation are: the thickness of the single-zone heating element 2 is 8 mm, and the meandering resistance width is 50.
  • the power saving rate can reach about 40%.
  • FIG6 The design of the heating element of an area-oriented exposed low-voltage and high-current heating device of the present invention is shown in FIG6 , and the design steps are as follows:
  • the power used for heating is determined according to the preset performance of the heat treatment equipment 4 to determine the specific value of the low voltage and high current actually used.
  • the shape of the heat treatment equipment in this embodiment is a rectangular parallelepiped, and the preset power of the entire rectangular parallelepiped is 200KW. Since the shape of the internal heating chamber is also a rectangular parallelepiped, the bottom of the rectangular parallelepiped is designed as an available heating surface.
  • the bottom heating element 2 of the rectangular parallelepiped is composed of a single resistance module.
  • the power of a single resistance heating element 2 is set to 203KW. 85V is selected as the low voltage value used in this embodiment through experience.
  • the available heating area of the heating chamber is determined.
  • the available heating area in this embodiment is about 12.8m2 ;
  • the material of the heating element of the heating device (hereinafter also referred to as the single resistance heating element 2) is selected according to the maximum temperature or heating characteristics that can be achieved when the heat treatment equipment is heated. Since the maximum heating temperature in this embodiment is 80°C, the material selected in this embodiment is 310S stainless steel plate; then, the heat exchange capacity of the available heating surface on the heating chamber is determined according to the thermal conductivity of the material.
  • the heat exchange area is the area of heat exchange between the heating element and the available surface of the heating chamber during the actual heat exchange process.
  • the ratio of the sum of the heat exchange areas to the available heating area is greater than 40%, preferably greater than 60%; the heat exchange area in this embodiment is about 60%.
  • the optimal specific parameters of the single-zone heating element 2 can be determined by empirical values and formulas according to the power, available heating area and low voltage.
  • the specific values of the single resistance heating element 2 after calculation are: the thickness of the single resistance heating element 2 is 1 mm, and the width of the single resistance module is 450 mm. In this embodiment, it can be calculated that by using the low-voltage and high-current heating device manufactured by the manufacturing method of the present invention, the power saving rate can reach about 45%.
  • an action is performed according to an element, it means that the action is performed at least according to the element, which includes two situations: performing the action only according to the element, and performing the action according to the element and other elements.
  • Expressions such as multiple, multiple, and multiple include 2, 2 times, 2 kinds, and more than 2, more than 2 times, and more than 2 kinds.

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Abstract

本申请涉及一种面积导向的裸露式低电压大电流加热装置的制造方法，其特征在于，所述方法包括以下步骤：(1)根据所需加热功率及可用加热面积，确定低电压(1V-110V)数值,再确定所述加热装置中的加热元件电阻的厚度、长度、宽度等参数，根据参数定制隔离变压器；(2)根据计算结果设计绘制加热元件的图片；(3)根据所述图片切割板材制作加热元件；(4)对所述加热元件固定在热处理设备的可用加热面积上时进行绝缘处理。与现有技术相比，本发明所制造的加热装置可以减少热阻、增大传热面积、提高热效率，节省能耗，节约比例至少在30％以上，并且可以极大的提高加热装置的使用寿命。本发明还有利于改善加热装置所处的工作环境，降低车间工作温度。

Description

一种面积导向的裸露式低电压大电流加热装置的制造方法 技术领域
本申请涉及加热领域，特别涉及一种低电压大电流迷宫状加热装置的制造方法。
背景技术
目前工业平面加热、沥青熔化、金属熔化、维持物料熔融态、空气加热物料烘干、保持恒温等的电加热仍然采用电阻式加热管、加热板加热，电阻式加热管、加热板是基于380V、220V电阻丝发热，突破很厚的绝缘将外部包裹的金属管体或金属板加热后再对被加热物体加热，这种间接加热，热阻大，电阻丝的加热面积小，传热效率不高，不利于节电，传统式的加热装置中电阻丝加热方式的缺点包括：
1.热损失大，现有沥青机、熔铅炉等采用的加热是由电阻丝制，管或板的内外双面发热，其内面(紧贴被加热物体部分)的热传导到被加热物体上，而外面的热量大部分散失到空气中，造成电能的损失浪费；
2.环境温度上升：由于热量大量散失，周围环境温度升高，尤其是夏季对生产环境影响很大，现场工作温度超过了40℃，有些企业不得不采用空调降低温度，这又造成能源二次浪费；
3.使用寿命短，维修量大:由于采用电阻丝发热，电阻丝容易因高温老化变形而烧断，烧坏后不易更换，正常使用电热管、板使用寿命约在半年左右，经常坏影响生产，因此，维修的工作量相对较大；
4.功率密度低，在一些需要较高温度的场合无法适应；
5.热惯性大，温度上下浮动大。
另一种改进型的加热装置使用的是电磁感应加热，其工作原理是利用磁场感应涡流加热原理进行工作。电磁感应加热圈本体并不发热，且实际使用中会在料筒外部包裹一定厚度的保温材料，电磁感应加热圈的表面温度在60℃以下，料筒内部的热量只有微量辐射到空气中，这样热能损失会大大降低，提高了热效率，因此节能效果显著。但是由高频电流通过线圈产生高速变化的交变磁场，当磁场强度到达一定量时会对人体的中枢神经系统构成危害。目前国内仅对家用和类似用途电器的电磁设备作了具体的规定，并没有适用于工业用途而设计的电磁设备的相关标准。电磁感应加热装置的厂商也只根据欧盟标准，对单个加热装置的四周进行EMF测试，但在实际工况下进行检测，电磁加热装置的电磁辐射强度仍然较大，存在不确定的危险性。另电磁感应加热装置寿命短，一般2-3年。
发明内容
本申请的目的在于提供一种追求最大传热面积、热效率高热损失小，使用寿命长的，低电压大电流加热装置的制作方法，从而在提高节能效率的情况下保证加热效率。
本申请公开了一种面积导向的裸露式低电压大电流加热装置的制造方法，所述制造方法包括以下步骤：
(1)设计所述加热装置，其包括以下子步骤：
1-1:确定加热功率以及安装所述加热装置的热处理设备的可用加热面积；
首先根据所述热处理设备的预设性能确定加热时使用的功率，再确定加热腔的可用加热面积，所述加热腔为所述热处理设备内部用以加热的空间，所述可用加热面积为所述加热腔上可用以热交换的面的面积之和；有 了功率和面积，根据经验总结的大数据表格初步确定实际使用到的低电压的具体数值，所述低电压的范围为1V-110V；
1-2:确定加热装置的加热元件材料及热交换面积；
之后根据所述热处理设备内部加热时所需达到的最高温度或加热特性选择所述加热装置的加热元件的材料，所述材料包括：高温哈氏合金板、镍基合金板、钛基合金板、钨基合金板、铜基合金板等各种耐高温合金板、2520、800H等各种耐高温不锈钢板、904l、310s、309S、304、316L等不锈钢板或铝板、铜板；所述加热元件由单区加热模块组成，所述单区加热模块由曲折连续电阻构成；接着根据所述材料的导热性能确定所述加热腔上每个可用面的热交换面积，所述热交换面积为实际换热过程中所述加热模块与所述加热腔的可用面进行热交换的面积，所述热交换面积之和与所述可用加热面积的比值大于40％，优选地大于60％；
1-3:根据功率及加热腔的可用加热面积及初步确定的(1V-110V)低电压数值来确定所述单区加热模块的具体参数
在确定所述功率、可用加热面积及低电压后，就可以根据所述功率、可用加热面积及低电压，通过经验数值、公式确定最佳的所述单区加热模块的具体参数，所述具体参数包括:单区加热模块电阻的电流、载流量、长度、厚度、宽度和间宽；
(2)根据计算结果设计绘制加热元件图片
根据设计计算出的单区加热模块的厚度、电阻的长度、宽度、间宽绘制出所述单区加热模块的形状，所述形状为曲折电阻连续成片展开至所需面积的形状,该形状类似迷宫状，有N条曲折的直线构成，以保证最大程度利用所述可用加热面积；
(3)根据所述图片切割板材制作加热元件；
根据所述图片采用所需厚度的金属板材，用切割设备切割成所需的面积、形状的单区加热模块并将单区加热模块进出电流电阻的两端切割出螺丝孔以 便缆线与变压器连接，所述切割设备包括激光切割机；
(4)对所述加热模块固定在热处理设备的可用加热面积上时进行绝缘处理；
将所述加热元件与所述热处理设备接触或与非绝缘物体接触、固定的部分使用绝缘层隔开做绝缘处理，所述绝缘层的厚度为1-10mm，其外部不需要金属包裹。
在一个优选例中，所述设计方法的步骤(1)的子步骤还包括步骤1-4，所述步骤1-4为根据确定的加热装置的功率、低电压、大电流的具体数值定制变压器。
在一个优选例中，所述单区加热模块的数量根据所述可用加热面积的不同可以大于1个。
在一个优选例中，当所述单区加热模块的数量大于1时，多个所述单区加热模块被设计为并联连接或串联连接。
在一个优选例中，所述步骤1-3还包括：调整所述单区加热模块的数量，并适应性调整所述单区加热模块电阻的宽度、长度、厚度、间宽、载流量进行多次计算以得出效率最高的单区加热模块的数量。
在一个优选例中，所述步骤1-3还包括对每次计算所得的具体参数进行记录以对所述经验公式进行更新。
在一个优选例中，所述加热装置还包括根据变压器的参数定制的区控加热装置的温控系统，所述区控温控系统的数量小于等于所述变压器的数量，所述加热装置的使用方法包括：平面接触式直接加热、外部接触式间接加热、内部辐射式、对流式加热和利用某媒介间接加热，所述利用某媒介间接加热指使用所述加热装置将某媒介如液体或气体加热，再用被加热的某媒介如液体或气体去加热待加热物体。
在一个优选例中，所述平面接触式直接加热的对象包括固体和流体。
在一个优选例中，所述平面接触式直接加热、外部接触式间接加热、内 部辐射式、对流式加热和利用某媒介间接加热可根据实际的工作需求结合使用。
在一个优选例中，将低电压大电流单区加热模块电阻的进出电流两端用两套配套缆线，接入隔离变压器的两个进出端子，然后将220V或380V的电用配套线缆接入隔离变压器。温控系统是通过检测待加热物体的温度变化实时对变压器进行调控以确保温度精准。
在一个优选例中，将低电压大电流多个单区加热模块电阻的进出电流两端用多套配套缆线用并联或串联的方式接线，再合并接入隔离变压器的两个进出端子，然后将220V或380V的电用配套线缆接入隔离变压器。温控系统是通过检测待加热物体的温度变化实时对变压器进行调控以确保温度精度。
与现有技术相比，本发明制造的加热装置具有如下的优点:
1)本发明的制造的加热装置，其与现有的电阻丝加热装置相比，可以加大传热面积，裸露式减小热阻、提高热效率，极大的节省能耗，节约比例至少在30％以上，这是因为本发明采用面积导向的低压加热，传热面积可最大限度的展开，其绝缘材料可以非常薄，传热热阻小，传热面积大，传热效率高，这使得加热段的温度与工作温度接近，热量传递速度快，发热量与待加热物体所吸收的热量基本达到1比0.9以上，热量传递过程中的消耗较少。另外，采用低压的隔离变压器，使得安全性高，即便漏电也不会产生触电的危险。低电压加热能够提高热利用效率节省电源成本，使其比较经济实惠。
2)本发明设计制造的加热装置，可以保证控制电阻的载流量不大于10A/mm2，从而可以极大的提高加热装置的使用寿命。
3)本发明的设计方法为面积导向，用调节低电压大电流参数以保证传热面积的设计方法，其可以保证完全利用了可用的加热面积，从而保证传热效率最高。
4)本发明还有利于改善加热装置所处的工作环境，降低车间工作温度。 传统加热的特性决定不能严密保温，散失的热能使夏天车间工作环境恶劣，本加热装置由于低电压、传热面积大、传热效率高，低电压特性决定可以严密保温，无较多的逸散热能，所以不会导致工作环境温度的急剧上升。
本申请的说明书中记载了大量的技术特征，分布在各个技术方案中，如果要罗列出本申请所有可能的技术特征的组合(即技术方案)的话，会使得说明书过于冗长。为了避免这个问题，本申请上述发明内容中公开的各个技术特征、在下文各个实施方式和例子中公开的各技术特征、以及附图中公开的各个技术特征，都可以自由地互相组合，从而构成各种新的技术方案(这些技术方案均因视为在本说明书中已经记载)，除非这种技术特征的组合在技术上是不可行的。例如，在一个例子中公开了特征A+B+C，在另一个例子中公开了特征A+B+D+E，而特征C和D是起到相同作用的等同技术手段，技术上只要择一使用即可，不可能同时采用，特征E技术上可以与特征C相组合，则，A+B+C+D的方案因技术不可行而应当不被视为已经记载，而A+B+C+E的方案应当视为已经被记载。
附图说明
图1是本发明所述的制作方法所制造的加热装置的整体结构示意图；
图2是根据本发明的第一实施方式设计的加热元件的结构示意图。
图3是根据本发明的第二实施方式设计的加热元件的结构示意图。
图4是根据本发明的第三实施方式设计的加热元件的结构示意图。
图5是根据本发明的第四实施方式设计的加热元件的结构示意图。
图6是根据本发明的第五实施方式设计的加热元件的结构示意图。
1-可用加热面；2-加热元件；3-温控装置；；4-热处理设备；5-隔离变压器；
具体实施方式
本申请发明人经过深入研究，大量筛选，开发了一种面积导向的裸露式低电压大电流加热装置的制造方法。与现有技术相比，本申请根据使用本加热装置的热处理设备的可用加热面积进行相应的低电压大电流加热模块的设计，保证热交换面积最大化，从而保证换热效率以及节能效率的提高，并且由于本设计使用的是低电压、大电流、裸露式的加热方法，不需要进行很厚的防击穿的绝缘包裹和额外的金属外壳包裹，减少了热阻，提高了热效率。
在以下的叙述中，为了使读者更好地理解本申请而提出了许多技术细节。但是，本领域的普通技术人员可以理解，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本申请所要求保护的技术方案。
本发明所述的面积导向的裸露式低电压大电流加热装置如图1所示，其包括：加热元件2、温控装置3、热处理设备4、隔离变压器5，所述加热元件2的长度、宽度、间隔根据所述热处理设备4的可用加热面积以及设计电压通过经验公式设计而成并被安装在所述热处理设备4上，连接处做绝缘处理，所述热处理设备4与所述隔离变压器5连接，所述隔离变压器5根据所述热处理设备4使用的低电压的具体数值设计而成，所述隔离变压器5与所述温控装置3连接，所述温控装置3用以监控所述加热元件2的具体加热数值，用以保证加热过程的安全性以及稳定性。
实施例1
本发明所述的一种面积导向的裸露式低电压大电流加热装置的加热元件设计如图2所示，其设计步骤如下：
1-1:确定加热功率以及安装所述加热装置的热处理设备的可用加热面积；
首先根据所述热处理设备4的预设性能确定加热时使用的功率和 可用加热面积，以确定实际使用到的低电压大电流的具体数值，该实施例中所述热处理设备的预设功率为5.6kw，通过经验选择了20V作为该实施例中使用到的低电压数值。确定低电压数值后再确定加热腔的可用加热面积，本实施例可用加热面积约为0.29m2；
1-2:确定加热装置的加热元件2的材料及热交换面积；
之后根据所述热处理设备内部加热时所能达到的最高温度或加热特性选择所述加热装置的加热元件的材料(以下也称单区加热元件2)，由于本实施例中的最高加热温度可达到280℃，故本实施例选择的材料为高温哈氏合金板；接着根据所述材料的导热性能确定所述加热腔上每个可用面的热交换面积，所述热交换面积为实际换热过程中所述加热元件与所述加热腔的可用面进行热交换的面积，所述热交换面积之和与所述可用加热面积的比值大于40％，优选地大于60％；本实施例中的热交换面积约为65％
1-3:根据功率及加热腔的可用加热面积及初步确定的(1V-110V)低电压数值来确定所述单区加热元件2的具体参数
在确定所述可用加热面积后，就可以根据所述功率、可用加热面积及低电压，通过经验数值、公式确定最佳的所述单区加热元件2的具体参数，本实施例中，所述加热元件2计算后的具体数值为：加热元件2厚度为2.8mm，曲折连续电阻宽为10mm。计算后可得，本实施例中，通过使用本发明所述的制造方法所制造的低电压大电流加热装置，节电率可达到约40％
实施例2
本发明所述的一种面积导向的裸露式低电压大电流加热装置的加热元件2设计如图3所示，其设计步骤如下：
1-1:确定加热功率以及安装所述加热装置的热处理设备的可用加热面积；
首先根据所述热处理设备4的预设性能确定加热时使用的功率，以确定实际使用到的低电压大电流的具体数值，该实施例中所述热处理设备的预设功率为25kw，通过经验选择了45V作为该实施例中使用到的低电压数值，确定低电压数值后再确定加热腔的可用加热面积，本实施例中的可用加热面积约为6.64m2；
1-2:确定加热装置的加热元件2材料及热交换面积；
之后根据所述热处理设备内部加热时所能达到的最高温度或加热特性选择所述加热装置加热元件的材料(以下也称单区加热元件2)，由于本实施例中的最高加热温度可达到550℃，故本实施例选择的材料为2520耐1500℃高温不锈钢；接着根据所述材料的导热性能确定所述加热腔上每个可用面的热交换面积，所述热交换面积为实际换热过程中所述加热元件2与所述加热腔的可用面进行热交换的面积，所述热交换面积之和与所述可用加热面积的比值大于40％，优选地大于60％；本实施例中的热交换面积约为70％
1-3:根据功率及加热腔的可用加热面积及初步确定的(1V-110V)低电压数值来确定所述单区加热元件2的具体参数
在确定所述可用加热面积后，就可以根据所述功率、可用加热面积及低电压，通过经验数值、公式确定最佳的所述单区加热元件2的具体参数，本实施例中，由于热处理设备4呈环形，故本实施例选择了三个并联的单区加热元件2作为最终设计，所述加热元件2计算在参数代入后的具体数值为：加热元件2厚度为3.9mm，曲折电阻宽为27mm。计算后可得，本实施例中，通过使用本发明所述的制造方法所制造的低电压大电流加热装置，节电率可达到约50％
实施例3
本发明所述的一种面积导向的裸露式低电压大电流加热装置的加热元件2设计如图4所示，其设计步骤如下：
1-1:确定加热功率以及安装所述加热装置的热处理设备的可用加热面积；
首先根据所述热处理设备4的预设性能确定加热时使用的功率，以确定实际使用到的低电压大电流的具体数值，该实施例中所述热处理设备的形状为不规则形状，所以将中间与两侧进行了分别设计，中间的加热单区加热元件2的预设功率为6kw，通过经验选择了40V作为该实施例中使用到的低电压数值，两侧的单区加热元件2的预设功率皆为17.3kw，通过经验选择了60V作为使用到的低电压数值，确定低电压数值后再确定加热腔的可用加热面积，本实施例中的可用加热面积约为5.5m2；
1-2:确定加热装置的加热元件2材料及热交换面积；
之后根据所述热处理设备内部加热时所能达到的最高温度或加热特性选择所述加热装置加热元件的材料(以下也称单区加热元件2),由于本实施例中的最高加热温度可达到200℃，故本实施例选择的材料为904L；接着根据所述材料的导热性能确定所述加热腔上每个可用面的热交换面积，所述热交换面积为实际换热过程中所述加热元件与所述加热腔的可用面进行热交换的面积，所述热交换面积之和与所述可用加热面积的比值大于40％，优选地大于60％；本实施例中的热交换面积约为50％
1-3:根据功率及加热腔的可用加热面积及初步确定的(1V-110V)低电压数值来确定所述单区加热元件2的具体参数
在确定所述可用加热面积后，就可以根据所述功率、可用加热面积及低电压，通过经验数值、公式确定最佳的所述单区加热元件2的具体参数，本实施例中，所述单区加热元件2计算后的具体数值为：中间部分的单 区加热元件2厚度为8mm，曲折电阻宽为36mm，两侧的单区加热元件2的厚度为10mm，曲折电阻宽为18.8mm。计算后可得，本实施例中，通过使用本发明所述的制造方法所制造的低电压大电流加热装置，节电率可达到约50％。
实施例4
本发明所述的一种面积导向的裸露式低电压大电流加热装置的加热元件设计如图5所示，其设计步骤如下：
1-1:确定加热功率以及安装所述加热装置的热处理设备的可用加热面积；
首先根据所述热处理设备4的预设性能确定加热时使用的功率，以确定实际使用到的低电压大电流的具体数值，该实施例中所述热处理设备的形状为长方体，整个长方体预设功率为90KW,因内部的加热腔的形状也同样为三个小长方体，所以将三个小长方体的一侧各作为可用加热面进行设计，三个小长方体的三个单区加热元件2功率皆定为30KW，通过经验选择了35V作为该实施例中使用到的低电压数值，确定低电压数值后再确定加热腔的可用加热面积，本实施例中的可用加热面积约为9m2；
1-2:确定加热装置的加热元件2材料及热交换面积；
之后根据所述热处理设备内部加热时所能达到的最高温度或加热特性选择所述加热装置加热元件的材料(以下也称单区加热元件2),由于本实施例中的最高加热温度可达到450℃，故本实施例选择的材料为镍基合金；接着根据所述材料的导热性能确定所述加热腔上每个可用面的热交换面积，所述热交换面积为实际换热过程中所述加热元件与所述加热腔的可用面进行热交换的面积，所述热交换面积之和与所述可用加热面积的比值大于40％，优选地大于60％；本实施例中的热交换面积约为80％
1-3:根据功率及加热腔的可用加热面积及初步确定的(1V-110V)低电压数值来确定所述单区加热元件2的具体参数
在确定所述可用加热面积后，就可以根据所述功率、可用加热面积及低电压，通过经验数值、公式确定最佳的所述单区加热元件2的具体参数，本实施例中，所述三个单区加热元件2计算后的具体数值皆为：单区加热元件2厚度为8mm，曲折电阻宽为50。本实施例中，计算后可得，通过使用本发明所述的制造方法所制造大低电压大电流加热装置，节电率可达到约40％。
实施例5
本发明所述的一种面积导向的裸露式低电压大电流加热装置的加热元件设计如图6所示，其设计步骤如下：
1-1:确定加热功率以及安装所述加热装置的热处理设备的可用加热面积；
首先根据所述热处理设备4的预设性能确定加热时使用的功率，以确定实际使用到的低电压大电流的具体数值，该实施例中所述热处理设备的形状为长方体，整个长方体预设功率为200KW,因内部的加热腔的形状也同样长方体，所以将长方体的底部作为可用加热面进行设计，长方体的底部加热元件2由一个单条电阻模块组成，一个单条电阻加热元件2功率定为203KW，通过经验选择了85V作为该实施例中使用到的低电压数值，确定低电压数值后再确定加热腔的可用加热面积，本实施例中的可用加热面积约为12.8m2；
1-2:确定加热装置的加热元件2材料及热交换面积；
之后根据所述热处理设备内部加热时所能达到的最高温度或加热特性选择所述加热装置加热元件的材料(以下也称单条电阻加热元件2),由于本实施例中的最高加热温度为80℃，故本实施例选择的材料为310S不锈钢板；接着根据所述材料的导热性能确定所述加热腔上可用加热面的热交换 面积，所述热交换面积为实际换热过程中所述加热元件与所述加热腔的可用面进行热交换的面积，所述热交换面积之和与所述可用加热面积的比值大于40％，优选地大于60％；本实施例中的热交换面积约为60％
1-3:根据功率及加热腔的可用加热面积及初步确定的(1V-110V)低电压数值来确定所述单区加热元件2的具体参数
在确定所述可用加热面积后，就可以根据所述功率、可用加热面积及低电压，通过经验数值、公式确定最佳的所述单区加热元件2的具体参数，本实施例中，所述一个单条电阻加热元件2计算后的具体数值为：单条电阻加热元件2厚度为1mm，单条电阻模块宽为450mm。本实施例中，计算后可得，通过使用本发明所述的制造方法所制造的低电压大电流加热装置，节电率可达到约45％。
需要说明的是，在本专利的申请文件中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。本专利的申请文件中，如果提到根据某要素执行某行为，则是指至少根据该要素执行该行为的意思，其中包括了两种情况：仅根据该要素执行该行为、和根据该要素和其它要素执行该行为。多个、多次、多种等表达包括2个、2次、2种以及2个以上、2次以上、2种以上。
在本申请提及的所有文献都被认为是整体性地包括在本申请的公开内 容中，以便在必要时可以作为修改的依据。此外应理解，在阅读了本申请的上述公开内容之后，本领域技术人员可以对本申请作各种改动或修改，这些等价形式同样落于本申请所要求保护的范围。

Claims (10)

  1. 一种面积导向的裸露式低电压大电流加热装置的制造方法，其特征在于，所述制造方法包括以下步骤：
    (1)设计所述加热装置，其包括以下子步骤：
    1-1:确定加热功率以及安装所述加热装置的热处理设备的可用加热面积；
    首先根据所述热处理设备的预设性能确定加热时使用的功率，再确定加热腔的可用加热面积，所述加热腔为所述热处理设备内部用以加热的空间，所述可用加热面积为所述加热腔上可用以热交换的面的面积之和；有了功率和面积，根据经验总结的大数据表格初步确定实际使用到的低电压的具体数值，所述低电压的范围为1V-110V；
    1-2:确定加热装置的加热元件材料及热交换面积；
    之后根据所述热处理设备内部加热时所需达到的最高温度或加热特性选择所述加热装置的加热元件的材料，所述材料包括：高温哈氏合金板、镍基合金板、钛基合金板、钨基合金板、铜基合金板等各种耐高温合金板、2520、800H等各种耐高温不锈钢板、904l、310s、309S、304、316L等不锈钢板或铝板、铜板；所述加热元件由单区加热模块组成，单区加热模块可以是单条电阻展开面积的模块，也可以是曲折连续电阻展开面积的模块；接着根据所述材料的导热性能确定所述加热腔上每个可用面的热交换面积，所述热交换面积为实际换热过程中所述加热模块与所述加热腔的可用面进行热交换的面积，所述热交换面积之和与所述可用加热面积的比值大于40％，优选地大于60％；
    1-3:根据功率及加热腔的可用加热面积及初步确定的(1V-110V)低电压数值来确定所述单区加热模块的具体参数
    在确定所述功率、可用加热面积及低电压后，就可以根据所述功率、可用加热面积及低电压，通过经验数值、公式确定最佳的所述单区加热模块的具体参数，所述具体参数包括:单区加热模块电阻的电流、载流量、长度、厚度、宽度和间宽；
    (2)根据计算结果设计绘制加热元件图片；
    根据设计计算出的单区加热模块的厚度、电阻的长度、宽度、间宽绘制出所述单区加热模块的形状，所述形状为曲折电阻连续成片展开至所需面积的形状，以保证最大程度利用所述可用加热面积；
    (3)根据所述图片切割板材制作加热元件；
    根据所述图片采用所需厚度的金属板材，用切割设备切割成所需的面积、形状的单区加热模块并将单区加热模块进出电流的两端切割出螺丝孔以便缆线与变压器连接，所述切割设备包括激光切割机；
    (4)对所述加热模块固定在热处理设备的可用加热面积上时进行绝缘处理；
    将所述加热元件与所述热处理设备接触或与非绝缘物体接触、固定的部分使用绝缘层隔开做绝缘处理，所述绝缘层的厚度为1-10mm，其外部不需要金属包裹。
  2. 根据权利要求1所述的制造方法，其特征在于，所述设计方法的步骤(1)的子步骤还包括步骤1-4，所述步骤1-4为根据确定的加热装置的功率、低电压、大电流的具体数值定制变压器。
  3. 根据权利要求1所述的制造方法，其特征在于，所述单区加热模块的数量根据所述可用加热面积的不同可以大于1个。
  4. 根据权利要求3所述的制造方法，其特征在于，当所述单区加热模块的数量大于1时，多个所述单区加热模块被设计为并联连接或串联连接。
  5. 根据权利要求3所述的制造方法，其特征在于，所述步骤1-3还包括：调整所述单区加热模块的数量，并适应性调整所述单区加热模块电阻的宽度、长度、厚度、间宽、载流量进行多次计算以得出效率最高的单区加热模块的数量。
  6. 根据权利要求5所述的制造方法，其特征在于，所述步骤1-3还包括对每次计算所得的具体参数进行记录以对所述经验公式进行更新。
  7. 一种如权利要求1至6任一项所述的方法制作的加热装置，其特征在于，所述加热装置还包括根据变压器的参数定制的区控加热装置的温控系统，所述区控温控系统的数量小于等于所述变压器的数量，所述加热装置的使用方法包括：平面接触式直接加热、外部接触式间接加热、内部辐射式、对流式加热和利用某媒介间接加热，所述利用某媒介间接加热指使用所述加热装置将某媒介如液体或气体加热，再用被加热的某媒介如液体或气体去加热待加热物体。
  8. 根据权利要求7所述的加热装置，其特征在于，所述平面接触式直接加热的对象包括固体和流体。
  9. 根据权利要求7所述的加热装置，其特征在于，所述平面接触式直接加热、外部接触式间接加热、内部辐射式、对流式加热和利用某媒介间接加热可根据实际的工作需求结合使用。
  10. 一种如权利要求1至6任一项所述的方法制作的加热装置的安装方法，其特征在于，根据设计，将低电压大电流单区加热模块的两端用两套配套的缆线，或单独接入隔离变压器的两个进出端，或将多个所述单区加热模块的两端通过多套配套缆线用并联或串联的方式接线，再合并接入隔离变压器的两个进出端子，最后将220V或380V的电用配套线缆接入隔离变压器；最后通过温控系统检测热处理设备内部的温度变化实时对变压器进行调控以确保温度精准。
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