Melting furnace

Abstract

The utility model provides a melting furnace which comprises a furnace, an electric heating rod, a photovoltaic power generation device, an energy storage device, a first switch module, a second switch module and a third switch module, the control module is used for controlling the first switch module, the second switch module and the third switch module to be switched on and switched off and adjusting the magnitude of output current, and the voltage transformation and current conversion device is used for converting direct current into alternating current and is adjustable in voltage. The first switch module is electrically connected with the energy storage device, the energy storage device is electrically connected with the third switch module, the control module is electrically connected with the voltage transformation and current conversion device, the voltage transformation and current conversion device supplies power to the electric heating rod, and the electric heating rod is installed on a pool bottom large brick at the bottom of the kiln and partially located in a hearth. According to the utility model, the problem of high electricity utilization cost of a melting furnace adopting an electric boosting technology can be well solved.

Description

Technical Field

[0001] This utility model relates to the field of electric-assisted melting technology for melting furnaces, and in particular to a melting furnace. Background Technology

[0002] Traditional glass melting typically relies on the high temperatures generated by fuel combustion, which presents challenges such as unstable fuel consumption, incomplete combustion, and high energy consumption. Furthermore, the emission of volatile organic compounds (VOCs) during fuel melting poses a significant environmental challenge; for example, the high levels of fluorides and lead oxides negatively impact glass quality and the production environment.

[0003] Electric-assisted melting technology generates heat by introducing an electric current during the melting process, utilizing the conductivity of the molten glass. This internally heated melting method significantly reduces heat loss, improves thermal efficiency, and lowers energy consumption.

[0004] Electric-assisted melting is not only environmentally friendly but also improves the uniformity and quality of glass. Because the molten glass undergoes a consistent thermal history during the electric melting process, the molten glass supplied to the forming machine exhibits more uniform forming performance, reducing the scrap rate caused by stone formation. Furthermore, with electric-assisted melting, the melting temperature of the furnace can reach above 1650℃, suitable for the production of refractory glass, and it can maintain full-load output at all times, with heat loss quickly compensated by adjusting the voltage. However, electric-assisted melting technology suffers from high electricity costs. Therefore, it is necessary to develop a melting furnace that effectively addresses the high electricity costs associated with furnaces using electric-assisted melting technology. Utility Model Content

[0005] The purpose of this invention is to provide a melting furnace to solve the problem of high electricity costs in existing melting furnaces.

[0006] To solve the above-mentioned technical problems, this utility model provides a melting furnace, including a furnace and an electric heating rod, a photovoltaic power generation device, an energy storage device, a first switch module, a second switch module, and a third switch module for controlling the circuit to turn on and off, a control module for controlling the first switch module, the second switch module, and the third switch module to turn on and off and adjusting the output current, and a transformer-converter device for converting direct current to alternating current with adjustable voltage. The photovoltaic power generation device is electrically connected to the first switch module and the second switch module, the first switch module is electrically connected to the energy storage device, the energy storage device is electrically connected to the third switch module, the first switch module, the second switch module, and the third switch module are electrically connected to the control module, and the control module is electrically connected to the transformer-converter device. The transformer-converter device supplies power to the electric heating rod, which is installed on the bottom brick of the furnace and partially located inside the furnace chamber.

[0007] Optionally, the transformer converter includes an inverter and a transformer, the inverter is electrically connected to the control module, the transformer is electrically connected to the inverter, and the transformer is electrically connected to the electric heating rod.

[0008] Optionally, there are multiple electric heating rods, which are perpendicular to the bottom bricks of the kiln and are arranged along the Z-direction. The electric heating rods are arranged at intervals along the X-direction and at intervals along the Y-direction.

[0009] Optionally, the kiln further includes an electrode support for mounting the electric heating rod. The electrode support is mounted on a large brick at the bottom of the kiln, and the electric heating rod is mounted on the electrode support and inserted into the large brick at the bottom of the kiln, partially located inside the furnace.

[0010] Optionally, the electrode support includes a base, an electrode sleeve, and an insulating plate. The base is fixed to the bottom brick of the kiln. The electrode sleeve is installed on the base. The insulating plate covers the electrode sleeve. The electric heating rod is inserted into the insulating plate and extends into the furnace chamber of the kiln.

[0011] Optionally, the kiln further includes a water-cooling component, which is embedded in the bottom bricks of the kiln and surrounds a portion of the electric heating rods.

[0012] Optionally, the water-cooling assembly includes an inlet pipe, an outlet pipe, a first cooling element, and a second cooling element. The second cooling element is disposed inside the first cooling element, and a cooling gap is formed between the second cooling element and the first cooling element. One end of the second cooling element has a structural hole that connects the inner cavity of the first cooling element and the inner cavity of the second cooling element. The inlet pipe communicates with the cooling gap, and the outlet pipe communicates with the inner cavity of the second cooling element. The first cooling element and the second cooling element have mounting holes through which the electric heating rod passes, and the electric heating rod is sealed to the mounting holes.

[0013] Optionally, the mounting hole is coaxially arranged with the structural hole.

[0014] Optionally, the inlet pipe and the outlet pipe are located on the first side of the first cooling component, and the structural hole and the inlet pipe and the outlet pipe are located on the second side opposite to the first side of the first cooling component.

[0015] Optionally, it also includes a temperature sensor for collecting the temperature of the electric heating rod, the temperature sensor being connected to the control module.

[0016] The melting furnace provided by this utility model has the following beneficial effects:

[0017] By electrically connecting the photovoltaic power generation device to the first switch module and the second switch module respectively, the first switch module to the energy storage device, the energy storage device to the third switch module, the first switch module, the second switch module, and the third switch module to the control module, and the control module to the transformer-converter device, the transformer-converter device supplies power to the electric heating rod, the photovoltaic power generation device has two circuits supplying power to the electric heating rod: one circuit supplies power to the electric heating rod through the second switch module, the control module, and the transformer-converter device, and the other circuit supplies power to the electric heating rod through the first switch module, the energy storage device, the third switch module, the control module, and the transformer-converter device. That is, when the electrical energy of the photovoltaic power generation device exactly meets the needs of the electric heating rod, the control module controls the first switch module to open, the second switch module to close, and the third switch module to open, and the photovoltaic power generation device supplies power to the electric heating rod through the second switch module, the control module, and the transformer-converter device; when the photovoltaic power generation device... When the electrical energy generated by the photovoltaic power generation device exceeds the demand of the electric heating rod, the control module controls the first and second switch modules to conduct and the third switch module to disconnect, so that part of the electrical energy supplies power to the electric heating rod and part is stored in the energy storage device. When the electrical energy generated by the photovoltaic power generation device is less than the demand of the electric heating rod, the control module controls the first switch module to disconnect and the second and third switch modules to conduct, so that the photovoltaic power generation device and the energy storage device supply power to the electric heating rod simultaneously. When the photovoltaic power generation device does not generate electrical energy, the control module controls the first switch module to disconnect, the second switch module to disconnect and the third switch module to conduct, so that the energy storage device supplies power to the electric heating rod. When the electric heating rod is not working, the control module controls the first switch module to conduct and the second and third switch modules to disconnect, so that the electrical energy generated by the photovoltaic power generation device is stored in the energy storage device. In this way, the photovoltaic power generation device can charge the energy storage device, and the electrical energy from the energy storage device and the photovoltaic power generation device can be applied to the electric heating rod after commutation and voltage regulation. Therefore, the electric heating rod can use solar energy, thereby saving the electricity cost of the melting furnace. Attached Figure Description

[0018] Figure 1 This is a structural block diagram of the melting furnace in an embodiment of this utility model;

[0019] Figure 2 This is a structural block diagram of the melting furnace in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram showing the distribution of electric heating rods in the melting furnace in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the bottom brick of the furnace in the present invention after electric heating rods are installed.

[0022] Figure 5 This is a schematic diagram of the structure of the water-cooling component in the melting furnace in this embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100-Kiln; 210-Base; 220-Electrode sleeve; 230-Insulating plate; 240-Water cooling assembly; 241-Water inlet pipe; 242-Water outlet pipe; 243-First cooling component; 244-Second cooling component; 245-Limiter; 246-Cooling gap;

[0025] 300-Electric heating rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 , Figure 1 This is a structural block diagram of the melting furnace in an embodiment of this utility model. Figure 3 This is a schematic diagram showing the distribution of the electric heating rods 300 in the melting furnace according to an embodiment of this utility model. Figure 4 This is a schematic diagram of the structure of the bottom bricks of the furnace 100 in this embodiment of the present invention after the electric heating rods 300 are installed. Figure 5 This is a schematic diagram of the structure of the water-cooled component 240 in the melting furnace in this embodiment of the present invention. This embodiment provides a melting furnace, including a photovoltaic power generation device, an energy storage device, a furnace 100, an electric heating rod 300, and a transformer-converter device for converting direct current to alternating current with adjustable voltage. The photovoltaic power generation device is electrically connected to the energy storage device, and the energy storage device supplies power to the electric heating rod 300 through the transformer-converter device. The electric heating rod 300 is installed on the bottom brick of the furnace 100 and is partially located inside the furnace chamber.

[0033] A melting furnace includes a furnace 100, an electric heating rod 300, a photovoltaic power generation device, an energy storage device, a first switch module, a second switch module, and a third switch module for controlling the on and off of the circuit, a control module for controlling the on and off of the first switch module, the second switch module, and the third switch module and adjusting the output current, and a transformer-converter device for converting direct current to alternating current with adjustable voltage. The photovoltaic power generation device is electrically connected to the first switch module and the second switch module, respectively. The first switch module is electrically connected to the energy storage device, and the energy storage device is electrically connected to the third switch module. The first switch module, the second switch module, and the third switch module are electrically connected to the control module, and the control module is electrically connected to the transformer-converter device. The transformer-converter device supplies power to the electric heating rod 300, which is mounted on a large brick at the bottom of the furnace 100 and partially located inside the furnace chamber.

[0034] By electrically connecting the photovoltaic power generation device to the first switch module and the second switch module respectively, the first switch module to the energy storage device, the energy storage device to the third switch module, the first switch module, the second switch module, and the third switch module to the control module, and the control module to the transformer converter, the transformer converter supplies power to the electric heating rod 300. Therefore, the photovoltaic power generation device has two circuits supplying power to the electric heating rod 300: one circuit supplies power to the electric heating rod through the second switch module, the control module, and the transformer converter; the other circuit supplies power to the electric heating rod through the first switch module, the energy storage device, the third switch module, the control module, and the transformer converter. That is, when the power from the photovoltaic power generation device exactly meets the needs of the electric heating rod, the control module controls the first switch module to open, the second switch module to close, and the third switch module to open, and the photovoltaic power generation device supplies power to the electric heating rod through the second switch module, the control module, and the transformer converter. When the photovoltaic power generation device... When the electrical energy generated by the photovoltaic power generation device exceeds the demand of the electric heating rod, the control module controls the first and second switch modules to conduct and the third switch module to disconnect, so that part of the electrical energy supplies power to the electric heating rod and part is stored in the energy storage device. When the electrical energy generated by the photovoltaic power generation device is less than the demand of the electric heating rod, the control module controls the first switch module to disconnect and the second and third switch modules to conduct, so that the photovoltaic power generation device and the energy storage device supply power to the electric heating rod simultaneously. When the photovoltaic power generation device does not generate electrical energy, the control module controls the first switch module to disconnect, the second switch module to disconnect and the third switch module to conduct, so that the energy storage device supplies power to the electric heating rod. When the electric heating rod is not working, the control module controls the first switch module to conduct and the second and third switch modules to disconnect, so that the electrical energy generated by the photovoltaic power generation device is stored in the energy storage device. In this way, the photovoltaic power generation device can charge the energy storage device, and the electrical energy from the energy storage device and the photovoltaic power generation device can be applied to the electric heating rod 300 after commutation and voltage regulation. Therefore, the electric heating rod 300 can use solar energy, thereby saving the electricity cost of the melting furnace.

[0035] In this embodiment, the control module is manufactured by Shenzhen Apunde New Energy Technology Co., Ltd., and its model is IP-Smart2.

[0036] In this embodiment, the first switch module, the second switch module, and the third switch module are manufactured by Shanghai Anshou Electric Co., Ltd., and the model number is EDS6EL.

[0037] refer to Figure 2 , Figure 2This is a structural block diagram of the melting furnace in this embodiment of the utility model. The transformer-converter device includes an inverter and a transformer. The inverter is electrically connected to the control module, the transformer is electrically connected to the inverter, and the transformer is electrically connected to the electric heating rod 300. During grid-connected power generation, the inverter monitors the voltage and current of the photovoltaic power generation device in real time and adjusts the phase of the output voltage to precisely control the amount of active power, while maintaining synchronous operation with the grid-connected photovoltaic power generation device. This ensures that the photovoltaic power generation device can stably transmit electrical energy and achieve efficient energy utilization.

[0038] The transformer is an independent, load-adjustable transformer, a product of the French company BB. It features a wide adjustable range, high efficiency, energy saving, and a service life of approximately 30 years. Based on the transformer's automatic power adjustment feature, and in conjunction with a temperature sensor, it can reduce fuel consumption and provide compensation to overcome gas instability.

[0039] The photovoltaic power generation device includes a photovoltaic array, and the output end of the photovoltaic array is electrically connected to an energy storage device.

[0040] The photovoltaic array comprises multiple photovoltaic modules, which are connected in series and / or in parallel. The output power of the photovoltaic modules ranges from 20W to 400W.

[0041] The photovoltaic module includes multiple solar panels, which are connected in series and / or in parallel.

[0042] Specifically, the size of the solar panel is generally 42cm. 2 ~1002cm 2 It varies. The normal operating voltage of a solar panel is approximately 0.5V, and the operating current is 20-25mA / 2cm². 2 .

[0043] Solar panels use a doping process to form a PN junction. When sunlight shines on the solar panel, a voltage appears across the PN junction. By connecting the PN junction, a current is generated. This current is direct current (DC).

[0044] The energy storage device includes a battery. When the power of the load (electric heating rod 300) is less than the power generation of the photovoltaic array, the excess electricity can be used to charge the battery. When the power consumption of the electrical equipment increases and the power generation of the photovoltaic array cannot meet the demand, the electrical energy previously stored in the battery can supply power to the load (electric heating rod 300). This can effectively coordinate the supply and demand relationship between the power consumption of the load (electric heating rod 300) and the power generation of the photovoltaic module, playing a two-way regulation role.

[0045] The number of electric heating rods 300 is multiple, and the multiple electric heating rods 300 are evenly distributed in the kiln 100.

[0046] Specifically, the electric heating rod 300 is perpendicular to the bottom brick of the kiln and is arranged along the Z direction. The electric heating rod 300 is arranged at intervals along the X direction and at intervals along the Y direction.

[0047] The electric heating rod 300 consists of φ63.5mm molybdenum electrodes, and the grounding of the clarification zone is protected by two φ32mm molybdenum electrode rods. The molybdenum electrodes are products of the Austrian company PLANSEE, with a smooth, dense, silvery-gray surface.

[0048] Based on the space dimensions of the kiln 100, six electric heating rods 300 are arranged in a row in front of the hot spot, forming a total of eight rows to form an electric heating zone. This electric heating zone uses low-density electrical energy. Therefore, in different sizes of melting kiln spaces, it is ideal for the electric heating rods 300 in the electric heating zone to be evenly distributed in the bottom of the kiln 100. Failure to set the correct layout position will lead to failure of electric fluxing and affect the normal operation of the entire kiln.

[0049] The direct current generated by the photovoltaic power generation device is converted into alternating current by an inverter and connected to a transformer. The transformer is then connected to the electric heating rod 300 in the fluxing zone and the grounded heating electrode rod in the clarification zone via the power grid. In actual production, the transformer adjusts the operating power of the electric heating rod 300 in the fluxing zone according to real-time production needs.

[0050] refer to Figure 4 The kiln 100 also includes an electrode bracket for mounting the electric heating rod 300. The electrode bracket is mounted on the bottom brick of the kiln, and the electric heating rod 300 is mounted on the electrode bracket and inserted into the bottom brick of the kiln, and is partially located inside the furnace.

[0051] Specifically, the electrode support includes a base 210, an electrode sleeve 220, and an insulating plate 230. The base 210 is fixed to the bottom brick of the kiln. The electrode sleeve 220 is mounted on the base 210, and the insulating plate 230 covers the electrode sleeve 220. The electric heating rod 300 is inserted into the insulating plate 230 and extends into the furnace chamber of the kiln. This allows the electric heating rod 300 to be mounted on the insulating plate 230, and the electrode is protected by the electrode sleeve 220.

[0052] The electrode sleeve 220 is made of high-temperature resistant stainless steel 312#.

[0053] The kiln 100 also includes a water-cooling assembly 240, which is embedded in the bottom brick of the kiln and surrounds a portion of the electric heating rods 300. This allows for the cooling of a portion of the electric heating rods 300 inserted into the bottom brick of the kiln.

[0054] refer to Figure 5 The water-cooling assembly 240 includes an inlet pipe 241, an outlet pipe 242, a first cooling element 243, and a second cooling element 244. The second cooling element 244 is disposed inside the first cooling element 243, and a cooling gap 246 is formed between the second cooling element 244 and the first cooling element 243. One end of the second cooling element 244 has a structural hole that connects the inner cavity of the first cooling element 243 and the inner cavity of the second cooling element 244. The inlet pipe 241 communicates with the cooling gap 246, and the outlet pipe 242 communicates with the inner cavity of the second cooling element 244. The first cooling element 243 and the second cooling element 244 have mounting holes through which the electric heating rod 300 passes, and the electric heating rod 300 is sealed to the mounting holes. In this way, cooling water can enter the cooling gap 246 from the inlet pipe 241, then flow into the inner cavity of the second cooling component 244 from the structural hole, and then flow out from the outlet pipe 242. This increases the distance that the cooling water flows in the water-cooling assembly 240, so as to fully cool the electric heating rod 300.

[0055] Preferably, the mounting hole and the structural hole are coaxially arranged. This increases the distance that the cooling water travels in the water-cooling assembly 240, thereby sufficiently cooling the electric heating rod 300.

[0056] Preferably, the inlet pipe 241 and the outlet pipe 242 are located on the first side of the first cooling component 243, and the structural hole and the inlet pipe 241 and the outlet pipe 242 are located on the second side opposite to the first side of the first cooling component 243. This increases the distance the cooling water travels in the water-cooling assembly 240, thus sufficiently cooling the electric heating rod 300.

[0057] Preferably, the water-cooling assembly 240 further includes a limiter located in the cooling gap 246 and connected to the first cooling element 243 and the second cooling element 244. This makes the water-cooling assembly 240 more stable.

[0058] The melting furnace also includes a temperature sensor for collecting the temperature of the electric heating rod 300, and the temperature sensor is connected to the control module. Thus, the control module can control the current output by the control module based on the temperature detected by the temperature sensor, thereby effectively controlling the temperature of the electric heating rod.

[0059] Preferably, the control module limits the charging and discharging conditions of the energy storage device to prevent reverse charging, overcharging, and over-discharging. In addition, the control module also has functions such as short-circuit protection, reverse connection protection, and lightning protection.

[0060] Preferably, the tightness of the protective film sealing on the surface of the photovoltaic module directly determines the service life and reliability of the photovoltaic power generation device.

[0061] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A melting furnace, comprising a furnace and electric heating rods, characterized in that, It also includes a photovoltaic power generation device, an energy storage device, a first switch module, a second switch module, and a third switch module for controlling the circuit to turn on and off, a control module for controlling the first switch module, the second switch module, and the third switch module to turn on and off and adjusting the output current, and a transformer-converter device for converting direct current to alternating current with adjustable voltage. The photovoltaic power generation device is electrically connected to the first switch module and the second switch module, the first switch module is electrically connected to the energy storage device, the energy storage device is electrically connected to the third switch module, the first switch module, the second switch module, and the third switch module are electrically connected to the control module, the control module is electrically connected to the transformer-converter device, the transformer-converter device supplies power to the electric heating rod, and the electric heating rod is installed on the bottom brick of the pool at the bottom of the kiln and partially located inside the furnace.

2. The melting furnace as described in claim 1, characterized in that, The transformer converter includes an inverter and a transformer. The inverter is electrically connected to the control module, the transformer is electrically connected to the inverter, and the transformer is electrically connected to the electric heating rod.

3. The melting furnace as described in claim 1, characterized in that, The number of electric heating rods is multiple. The electric heating rods are perpendicular to the bottom bricks of the kiln and are arranged along the Z direction. The electric heating rods are arranged at intervals along the X direction and at intervals along the Y direction.

4. The melting furnace as described in claim 3, characterized in that, The kiln also includes an electrode support for mounting the electric heating rod. The electrode support is mounted on the bottom brick of the kiln, and the electric heating rod is mounted on the electrode support and inserted into the bottom brick of the kiln, partially located inside the furnace.

5. The melting furnace as described in claim 4, characterized in that, The electrode support includes a base, an electrode sleeve, and an insulating plate. The base is fixed to the bottom brick of the kiln. The electrode sleeve is installed on the base. The insulating plate covers the electrode sleeve. The electric heating rod is inserted into the insulating plate and extends into the furnace chamber of the kiln.

6. The melting furnace as described in claim 3, characterized in that, The kiln also includes a water-cooling component, which is embedded in the bottom bricks of the kiln and surrounds part of the electric heating rods.

7. The melting furnace as described in claim 6, characterized in that, The water-cooling assembly includes an inlet pipe, an outlet pipe, a first cooling element, and a second cooling element. The second cooling element is disposed inside the first cooling element, and a cooling gap is formed between the second cooling element and the first cooling element. One end of the second cooling element has a structural hole that connects the inner cavity of the first cooling element and the inner cavity of the second cooling element. The inlet pipe is connected to the cooling gap, and the outlet pipe is connected to the inner cavity of the second cooling element. The first cooling element and the second cooling element have mounting holes through which the electric heating rod passes, and the electric heating rod is sealed to the mounting holes.

8. The melting furnace as described in claim 7, characterized in that, The mounting hole is coaxially arranged with the structural hole.

9. The melting furnace as described in claim 8, characterized in that, The inlet pipe and the outlet pipe are located on the first side of the first cooling component, and the structural hole and the inlet pipe and the outlet pipe are located on the second side opposite to the first side of the first cooling component.

10. The melting furnace as described in claim 1, characterized in that, It also includes a temperature sensor for collecting the temperature of the electric heating rod, and the temperature sensor is connected to the control module.

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