A structure of an electrically heated vacuum phase change furnace

Abstract

This utility model provides an electrically heated vacuum phase change furnace structure, relating to the field of vacuum phase change furnaces. It includes an electric heating assembly comprising a cover tube, a heat-conducting seat fixedly connected to the inner cavity of the cover tube, an electric heating tube movably connected to the inner cavity of the heat-conducting seat, a cover threaded to one end of the cover tube, a spring fixedly connected to one side of the inner cavity of the cover, and a pressure plate fixedly connected to the other end of the spring and in contact with the electric heating tube. In this utility model, the electric heating tube is movably connected to the inner cavity of the heat-conducting seat. By opening the threaded cover, the electric heating tube can be easily removed for maintenance or replacement, eliminating the need to shut down and open the entire furnace as in existing technologies. This significantly saves time and manpower, avoids production interruptions, and improves the operating efficiency and reliability of the equipment. Furthermore, the spring and pressure plate design on one side of the inner cavity of the cover ensures that the pressure plate is in close contact with the electric heating tube under the action of the spring, guaranteeing a stable connection between the electric heating tube and the heat-conducting seat, while also ensuring good heat conduction and heating efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum phase change furnaces, specifically an electrically heated vacuum phase change furnace structure. Background Technology

[0002] As a novel and highly efficient heating device, the electrically heated vacuum phase change furnace ingeniously integrates advanced electric heating technology with the unique vacuum phase change heat transfer principle. It plays a vital role in various fields, including industrial production, scientific research experiments, and residential heating. Specifically, in a vacuum environment, this equipment fully utilizes the phase change characteristics of the phase change medium to achieve heat transfer. This innovative design significantly improves heat transfer efficiency, offering substantial advantages over traditional heating methods. During operation, the phase change medium absorbs heat generated by the electric heating element under vacuum conditions, rapidly undergoing a phase change and transforming into a gaseous state. The gaseous medium flows rapidly within the furnace and comes into contact with the object to be heated, releasing a large amount of latent heat through condensation. The condensed medium then flows back to the heating area to re-enter the phase change cycle, forming a highly efficient and stable closed-loop heat transfer system. This circulation mode not only reduces heat loss during transfer but also ensures a more uniform temperature distribution within the furnace, effectively preventing localized overheating and thus guaranteeing the safety and reliability of the heating process while extending the equipment's service life.

[0003] Current electrically heated vacuum phase change furnaces mainly consist of a furnace body, an electric heating system, a vacuum system, and a phase change medium. Upon initial use, the vacuum system is activated first, gradually evacuating the air from the furnace body to create a high-vacuum environment. Next, the electric heating system begins operation. When the heating elements are energized, electrical energy is efficiently converted into heat energy, which then heats the phase change medium inside the furnace. When the phase change medium is heated to its specific phase change temperature, a phase change occurs, such as a gradual transition from a liquid to a gaseous state. The phase change medium, in this phase change state, flows to the vicinity of the heated object and exchanges heat with it. During this process, the phase change medium transfers its absorbed latent heat to the heated object, thereby increasing the object's temperature. After heat exchange, the phase change medium can return to the electric heating area to continue absorbing heat and undergoing phase change, thus continuously cycling and providing a stable and efficient heating environment for the heated object. However, in practical applications, this type of traditional phase change furnace often has some areas for improvement. For example, the phase change medium circulation path design in some devices is not optimized, resulting in greater flow resistance within the furnace body, affecting the efficiency and speed of heat exchange. Simultaneously, some furnace bodies have poor insulation performance, leading to excessive heat loss during long-term operation, increasing energy consumption and potentially adversely affecting the external ambient temperature. Furthermore, the layout of heating elements in traditional electric heating systems is sometimes unreasonable, resulting in uneven temperature distribution in different areas of the furnace body, which may cause instability in the phase change process of the phase change medium, thereby affecting the heating effect and quality stability of the heated object.

[0004] However, under current technological conditions, electrically heated vacuum phase change furnaces have a significant problem: the heating elements are typically fixedly installed inside the furnace body and tightly integrated with it. From a certain perspective, this unique design does ensure relatively good heat conduction between the heating elements and the furnace body, thus guaranteeing efficient heat transfer during normal operation.

[0005] However, we cannot ignore the series of problems arising from the tight connection between the heating element and the furnace body. Once the heating element malfunctions, such as being damaged, experiencing performance degradation, or needing replacement due to prolonged use, numerous unavoidable difficulties arise. In such cases, maintenance personnel must first stop the entire furnace to ensure the safety and accuracy of the repair process. Subsequently, they need to spend considerable time and effort opening the furnace body. This process itself is complex, potentially requiring the disassembly of multiple components and adherence to strict operating procedures to access the internal heating element and carry out repair and replacement operations.

[0006] This series of tedious processes not only consumes significant time and manpower, as maintenance personnel need to dedicate substantial energy to completing these tasks, but also directly leads to production interruptions. For many companies relying on electrically heated vacuum phase change furnaces for production, such interruptions represent a substantial loss, potentially impacting the normal operation of the entire production line and leading to a chain reaction of delayed product delivery. This situation severely affects the normal operation of electrically heated vacuum phase change furnaces, significantly reducing equipment efficiency and economic benefits, and posing enormous challenges to companies in terms of equipment maintenance and production planning.

[0007] In summary, this utility model provides an electrically heated vacuum phase change furnace structure to solve the above problems. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: An electrically heated vacuum phase change furnace structure, including The vacuum heating unit includes a furnace body, a first connecting plate and a second connecting plate fixedly connected to both sides of the furnace body, a heat exchange tube fixedly connected to the inner cavity of the furnace body and communicating with the first connecting plate and the second connecting plate, a vacuum pump fixedly connected to the top of the furnace body and whose suction end communicates with the furnace body, an electric heating component disposed in the inner cavity of the furnace body for heating, and a descaling component disposed at the lower end of the inner cavity of the furnace body for descaling the surface of the electric heating component. The electric heating assembly includes a cover tube, a heat-conducting seat fixedly connected to the inner cavity of the cover tube, an electric heating tube movably connected to the inner cavity of the heat-conducting seat, a cover threaded to one end of the cover tube, a spring fixedly connected to one side of the inner cavity of the cover, and a pressure plate fixedly connected to the other end of the spring and in contact with the electric heating tube. With the operation of a vacuum pump, air present inside the furnace can be efficiently extracted. The core purpose of this extraction process is to create a vacuum environment inside the furnace. Under such a vacuum, the boiling point of the phase change medium will decrease significantly. Next, an electric heating component is used to efficiently convert electrical energy into heat energy, which then heats the phase change medium inside the furnace, causing it to undergo a phase change. After the phase change, the medium has the ability to flow freely and can flow to the location of the heat exchange tubes. Here, it exchanges heat with the object being heated. Through this heat exchange process, the latent heat absorbed by the phase change medium can be effectively transferred to the object being heated, thereby causing the temperature of the object to rise. After the heat exchange process, the phase change medium can flow back to the electric heating area.

[0009] Furthermore, in this utility model, a feeding assembly is provided on the top of the first connecting plate. The feeding assembly includes a fixed pipe, a connecting pipe disposed on the top of the fixed pipe, and an interception net disposed in the inner cavity of the fixed pipe for intercepting impurities. The main function of the interception net is to effectively intercept impurities in the incoming material.

[0010] Furthermore, in this utility model, the connecting tube is sleeved on the surface of the fixed tube and threadedly connected to the surface of the fixed tube, a limiting ring is fixedly connected to the upper end of the inner cavity of the fixed tube, and the bottom of the interception net is in contact with the top of the limiting ring.

[0011] Furthermore, in this utility model, the top of the second connecting plate is connected to a discharge pipe, the top of the furnace body is connected to a liquid inlet pipe, and the bottom of the furnace body is connected to a drain pipe.

[0012] Furthermore, in this utility model, a base is fixedly connected to the bottom of the furnace body, a ladder is fixedly connected to the front of the base, and the other end of the ladder is fixedly connected to the top of the furnace body.

[0013] Furthermore, in this utility model, a baffle is movably connected to one side of the cover via a damping pivot, and through holes are provided on one side of the pressure plate and one side of the inner cavity of the cover.

[0014] Furthermore, in this utility model, the descaling assembly includes a servo geared motor, a threaded rod connected to the output shaft of the servo geared motor, a threaded sleeve threaded to the surface of the threaded rod, and an annular brush fixedly connected to the top of the threaded sleeve and whose inner wall contacts the surface of the cover tube.

[0015] Furthermore, in this utility model, a baffle plate is fixedly connected to the inner cavity of the first connecting plate, and the servo geared motor is fixed to the lower end of the inner cavity of the first connecting plate by bolts and threads.

[0016] Furthermore, in this invention, a temperature sensor is provided on the left side of the back of the furnace inner cavity, and a vacuum gauge is provided on the right side of the back of the furnace inner cavity.

[0017] Furthermore, in this invention, a microcontroller is provided on one side of the second connecting plate, and the output terminals of the temperature sensor and the vacuum gauge are both connected to the input terminal of the microcontroller.

[0018] Furthermore, in this invention, the input end of the electric heating tube is connected to the output end of the microcontroller, and the output end of the microcontroller is connected to the input ends of the vacuum pump and the servo geared motor. By carefully designing the descaling components, after the equipment has been running for a certain period of time, or according to a pre-set descaling cycle, when the microcontroller receives an instruction to perform a descaling operation, it begins to issue a start control command to the descaling components. In this process, the microcontroller plays the role of the decision-maker, determining whether to start the descaling operation based on the equipment running time and the preset cycle. At this time, the microcontroller sends a start signal to the servo geared motor, and after receiving this start signal, its output shaft begins to rotate. Since the output shaft of the servo geared motor and the threaded rod are connected by a transmission connection, this transmission connection is a tight mechanical fit, so the rotation of the output shaft will drive the threaded rod to rotate together. The threaded rod and the threaded sleeve are connected by a thread, which has a certain degree of constraint and adjustability, and a ring brush is fixed at the top of the threaded sleeve, which is fitted onto the surface of the cover tube. This constraint restricts the threaded sleeve to move only along the axial direction of the threaded rod. As the threaded rod rotates, the threaded sleeve moves linearly along its surface. The annular brush, fixed to the top of the threaded sleeve, also moves with it. The inner wall of the annular brush contacts the surface of the casing, wiping the casing surface during its movement and removing the scale buildup. Once the annular brush has finished cleaning the casing surface, the microcontroller sends a stop signal to the servo motor. Upon receiving the stop signal, the servo motor stops rotating, the threaded rod stops rotating, and the threaded sleeve and annular brush stop moving. The descaling operation is then complete.

[0019] Beneficial effects: This utility model has the following beneficial effects: 1. This utility model relates to a heating furnace device, which effectively extracts air from the furnace body through a vacuum pump, thereby creating a stable vacuum environment within the furnace. This vacuum environment is established using a high-efficiency vacuum pump, which rapidly removes air molecules from the furnace body, significantly reducing the gas density. Due to the lower gas pressure in the vacuum environment, according to physical principles, this significantly lowers the boiling point of the phase change medium, making the phase change process easier to occur. Specifically, the low pressure condition lowers the energy threshold required for a liquid or solid to transform into a gas, thus allowing the phase change medium to complete its state change at a relatively low temperature. Simultaneously, the electric heating component, as the core heating element, efficiently converts the input electrical energy into heat energy to heat the phase change medium within the furnace, causing it to transform from a liquid to a gaseous state or from a solid state. In the phase change process to liquid state, the electric heating component employs advanced heating technology to ensure uniform heat distribution and stable output, thereby improving heating efficiency and reducing energy consumption. When the phase change medium is heated, it flows within the system and enters the heat exchange tube area, where it undergoes efficient heat exchange with the heated object. During this stage, the phase change medium utilizes its own physical properties to store the absorbed heat as latent heat, which is released upon contact with the heated object. At this point, the latent heat absorbed by the phase change medium is transferred to the heated object, achieving rapid heating. This method not only improves heat transfer efficiency but also ensures full utilization of heat, avoiding energy waste. Furthermore, the design of the entire heating process fully considers environmental protection and economy, striving to meet industrial needs while minimizing environmental impact and reducing operating costs.

[0020] Furthermore, this invention features innovative optimizations in the design of the electric heating component. The electric heating tube is installed in the inner cavity of the heat-conducting seat via a movable connection. This design offers significant convenience: when the electric heating tube needs maintenance or replacement, it can be easily removed simply by opening the threaded connection with the cover, without having to stop work and disassemble the entire heating furnace as required by existing technologies. This improvement greatly saves maintenance time and labor costs, while also avoiding production interruptions caused by equipment downtime, thereby significantly improving the overall operating efficiency and reliability of the equipment.

[0021] To further enhance equipment performance, this invention cleverly incorporates a spring and pressure plate structure on one side of the inner cavity of the cover. This design utilizes the elastic force of the spring to ensure the pressure plate remains in close contact with the electric heating tube. This not only guarantees a more stable connection between the electric heating tube and the heat-conducting seat but also effectively improves heat conduction between them, thereby ensuring the high efficiency and stability of the heating process. In summary, this invention, through a series of innovative designs, achieves both efficient heat transfer and ease of maintenance and long-term reliability, possessing high practical application value. In practical applications, this electrically heated vacuum phase change furnace structure exhibits superior performance. Due to its unique design, the vacuum environment inside the furnace effectively reduces heat loss, further improving energy utilization efficiency. Simultaneously, the selection of the phase change medium has been carefully considered to ensure its stability and efficiency across different temperature ranges. Furthermore, the furnace exterior uses high-quality insulation materials, which not only protect operators from high-temperature injuries but also reduce the impact of ambient temperature on the furnace's internal operating conditions to a certain extent.

[0022] To meet the needs of different scenarios, this utility model also provides electric heating components of various specifications and configurations. Users can flexibly adjust the power and heating method according to specific heating requirements. At the same time, the control system of the equipment has also been upgraded to be intelligent, equipped with high-precision sensors and automatic adjustment devices, which can monitor key parameters such as temperature and pressure inside the furnace in real time, and automatically adjust the heating power and vacuum degree according to preset conditions, thereby achieving more precise process control.

[0023] In terms of safety, this invention also performs exceptionally well. In addition to the aforementioned spring pressure plate structure that effectively prevents the electric heating tube from loosening, the equipment is equipped with multiple protection mechanisms, such as over-temperature protection, over-pressure protection, and emergency shutdown function. These designs greatly reduce the risks that may occur during equipment operation and provide users with a more reliable operating experience. In short, this innovative electric heating vacuum phase change furnace structure, with its high efficiency, safety, and ease of maintenance, represents a major breakthrough in the field of industrial heating.

[0024] 2. This utility model designs a high-efficiency descaling component, which can effectively remove the scale layer attached to the surface of the cover tube, thereby realizing the descaling operation of the equipment. This automated descaling method is not only efficient but also very convenient. It can effectively prevent the heat conduction effect between the electric heating tube and the cover tube from being affected by the continuous accumulation of scale layer, thus ensuring that the equipment always maintains a high heating efficiency and can also significantly extend the service life of the equipment. At the same time, the equipment is also equipped with a temperature sensor and a vacuum gauge, which can monitor the temperature change and vacuum level in the furnace in real time. When used with a microcontroller, it can automatically control the operating status of the electric heating tube and the vacuum pump according to the preset parameters, thereby realizing the automated control and precise operation of the equipment.

[0025] In addition, the equipment is equipped with a specially designed feeding component. This component not only facilitates the injection of materials but also effectively intercepts impurities in the materials, preventing them from entering the furnace and causing problems such as pipe blockage, affecting heating efficiency, or contaminating the phase change medium. This ensures the normal operation of the equipment and the quality of the final product. A discharge pipe is installed at the bottom of the equipment, mainly used to discharge materials that have completed heating and other processes within the furnace. This facilitates subsequent processing or collection of these materials. A liquid inlet pipe is installed at the top of the furnace for injecting the phase change medium into the furnace, while a liquid outlet pipe is installed at the bottom for discharging the phase change medium. This design facilitates the replacement of the phase change medium or maintenance of the equipment, ensuring continuous and stable operation. To further enhance the safety and reliability of the equipment, an additional heat insulation protective layer is added to the outside of the furnace. This protective material not only effectively reduces heat loss and improves energy efficiency but also avoids the risk of accidental burns caused by high temperatures, providing a safer working environment for operators. Meanwhile, the equipment design fully considers the modular concept, with all key components using detachable connections. This not only facilitates daily maintenance and repair but also significantly reduces the time cost of replacing parts. Furthermore, the electric heating tubes inside the furnace are made of special corrosion-resistant and high-temperature-resistant materials, ensuring stable performance even under prolonged high-temperature operation, thus further extending the overall service life of the equipment. The structure of this electric heating vacuum phase change furnace emphasizes detailed optimization in its design, striving to provide users with a more convenient and efficient user experience. The internal spatial layout of the furnace body has been precisely calculated to ensure that materials and phase change media can exchange heat under optimal conditions while minimizing energy loss. In addition, the equipment is equipped with an intelligent alarm system. When abnormal conditions occur during operation, such as the temperature exceeding the set range or the vacuum level decreasing, the system will immediately issue an alarm and automatically take emergency measures, effectively avoiding losses caused by operational errors or equipment malfunctions. To meet the diverse needs of different users, the equipment also supports switching between multiple operating modes. Users can flexibly adjust operating parameters according to actual process requirements to achieve personalized operation settings. This highly intelligent and user-friendly functional design not only enhances the adaptability of the equipment but also further strengthens its competitiveness in the industry. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the furnace body of this utility model; Figure 3 This is a cross-sectional structural diagram of the first connecting disc of this utility model; Figure 4This is a schematic diagram of the connection structure of the cover tube, annular brush, threaded sleeve and threaded rod of this utility model; Figure 5 This is a schematic diagram of the structure of the cover tube and cover in the separated state of this utility model; Figure 6 This is a cross-sectional structural diagram of the cover of this utility model; Figure 7 This is a schematic diagram of the structure of the fixed tube and the connecting tube in the separated state of this utility model.

[0027] In the picture: 100. Vacuum heating unit; 110. Furnace body; 111. Temperature sensor; 112. Vacuum gauge; 113. Base; 114. Ladder; 120. First connecting plate; 130. Second connecting plate; 131. Microcontroller; 140. Vacuum pump; 150. Electric heating assembly; 151. Cover tube; 152. Heat-conducting seat; 153. Electric heating tube; 154. Cover; 155. Spring; 156. Pressure plate; 157. Baffle; 160. Descaling assembly; 161. Servo geared motor; 162. Threaded rod; 163. Threaded sleeve; 164. Annular brush; 170. Feeding assembly; 171. Fixing pipe; 172. Connecting pipe; 173. Interception net; 174. Limiting ring; 180. Discharge pipe; 190. Drainage pipe. Detailed Implementation

[0028] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0029] Example 1 like Figure 1-7 As shown, this is the first embodiment of the present invention, which provides an electrically heated vacuum phase change furnace structure, including... The vacuum heating unit 100 includes a furnace body 110, a first connecting plate 120 and a second connecting plate 130 fixedly connected to both sides of the furnace body 110, a heat exchange tube fixedly connected to the inner cavity of the furnace body 110 and communicating with the first connecting plate 120 and the second connecting plate 130, a vacuum pump 140 fixedly connected to the top of the furnace body 110 and communicating with the furnace body 110 at its suction end, an electric heating component 150 disposed in the inner cavity of the furnace body 110 and used for heating, and a descaling component 160 disposed at the lower end of the inner cavity of the furnace body 110 and used for descaling the surface of the electric heating component 150. The electric heating assembly 150 includes a cover tube 151, a heat-conducting seat 152 fixedly connected to the inner cavity of the cover tube 151, an electric heating tube 153 movably connected to the inner cavity of the heat-conducting seat 152, a cover 154 threadedly connected to one end of the cover tube 151, a spring 155 fixedly connected to one side of the inner cavity of the cover 154, and a pressure plate 156 fixedly connected to the other end of the spring 155 and in contact with the electric heating tube 153.

[0030] like Figure 1-7 As shown, with the operation of vacuum pump 140, the air inside furnace body 110 can be efficiently extracted. The core purpose of this extraction process is to create a vacuum environment inside furnace body 110. Under such a vacuum, the boiling point of the phase change medium will drop significantly. Next, the electric heating component 150 is used to efficiently convert electrical energy into heat energy, thereby heating the phase change medium inside furnace body 110 and causing the phase change medium to undergo a phase change. After the phase change, the medium has the ability to flow freely and can flow to the location of the heat exchange tube, where it can carry out heat exchange with the object being heated. Through this heat exchange process, the latent heat absorbed by the phase change medium can be effectively transferred to the object being heated, thereby causing the temperature of the object being heated to rise. After the heat exchange process, the phase change medium can also flow back to the electric heating area.

[0031] This design not only ensures efficient heat transfer but also maintains a stable and efficient heating environment. In the electric heating assembly 150, the electric heating element 153 is placed inside the heat-conducting base 152 via a movable connection. When maintenance or replacement is needed, the electric heating element 153 can be easily removed simply by opening the cover 154, which is fixed by a threaded connection. During installation, the heat-conducting base 152 can limit the position of the electric heating element 153, ensuring its accuracy. In addition, the cover 154 and the cover tube 151 are connected by a threaded connection. The spring 155 on one side of the inner cavity of the cover 154 will drive the pressure plate 156 to move to one side under the drive of the return elastic force. This will make the pressure plate 156 tightly fit with the electric heating tube 153 under the force of the spring 155, thereby ensuring the stability of the connection between the electric heating tube 153 and the heat conduction seat 152. This stable connection form further ensures excellent heat conduction performance and efficient heating effect in the later use process.

[0032] Unlike traditional methods that require stopping and starting the entire heating furnace during the disassembly and installation process, this design significantly saves time and manpower costs, effectively prevents production interruptions, and noticeably improves equipment efficiency and reliability. Furthermore, to further enhance heating efficiency, the inner wall of the furnace body 110 is made of a material with high reflectivity to reduce energy loss from heat radiation. The furnace body 110 also incorporates an optimized thermal insulation layer structure to prevent external heat loss, ensuring that heat is concentrated within the heating area. This improves overall energy efficiency, guaranteeing efficient, stable, and safe operation of the heating system and significantly enhancing its intelligence and automation capabilities. It provides a more convenient and cost-effective heating solution for a wider range of users. To further optimize the heating system's performance, a sophisticated intelligent control system has been designed to monitor the furnace body 110 in real time. The system rapidly transmits key internal parameters, such as temperature, pressure, and the flow rate of the phase change medium, to the control center via precise sensors. The control center then analyzes and processes the data according to pre-set programs and algorithms.

[0033] For example, when the temperature inside the furnace body 110 is detected to be below the expected heating temperature, the intelligent control system will automatically adjust the power of the electric heating component 150 to increase the input of electrical energy and improve the heating rate. If the flow rate of the phase change medium is detected to be too slow, which may affect the heat exchange efficiency, the system will issue a command to adjust the relevant flow control device to ensure that the phase change medium can circulate in the furnace body 110 at a suitable speed.

[0034] Meanwhile, this intelligent control system also has remote monitoring and operation functions. Users can remotely operate and monitor the heating system from anywhere with an internet connection through a mobile APP or computer control software. Whether in the office, at home, or while traveling, users can understand the operating status of the furnace 110 at any time and adjust the system according to actual needs. This remote control function provides great convenience to users, especially for some heating operation scenarios that require long-term continuous operation. Users do not need to stay by the equipment at all times, which greatly improves the flexibility of use.

[0035] In terms of safety, the system is equipped with multiple protection mechanisms. In addition to real-time monitoring of temperature and pressure, it is also equipped with overheat protection and overpressure protection devices. When the temperature inside the furnace body 110 exceeds the safety threshold, the overheat protection device will immediately cut off the power supply to the electric heating component 150 to prevent the temperature from rising further and causing danger. When the overpressure protection device detects an abnormal increase in pressure inside the furnace body 110, it will quickly open the pressure relief channel to release the excess pressure and ensure the safety of the furnace body 110.

[0036] In addition, to ensure the stable operation of vacuum pump 140, regular maintenance reminders are also set. The intelligent control system records the running time and working status of vacuum pump 140. When a certain running time is reached or an abnormal working state occurs, the system will issue a maintenance reminder in a timely manner, informing the user to check and maintain vacuum pump 140 in order to extend its service life and avoid the failure of vacuum pump 140 from affecting the normal operation of the entire heating system.

[0037] The external structure of the furnace body 110 also takes into account the convenience and safety of practical use. The outer shell of the furnace body 110 is made of high-strength, high-temperature resistant materials, which can not only withstand the high temperatures generated inside the furnace, but also effectively prevent damage to the furnace body from collisions with external objects. At the same time, the surface of the outer shell has been treated with anti-slip and heat insulation to prevent operators from being burned or slipping and getting injured when touching the furnace body. The installation of the equipment has also been optimized. The entire heating system adopts a modular design concept, with tight and standardized connections between various components. The installation process is simple and quick. Even personnel without professional installation experience can successfully complete the installation of the equipment by following the detailed installation instructions. This modular design also facilitates the transportation and handling of the equipment, reducing the risk of damage during transportation.

[0038] With continuous technological development and innovation, this heating system also possesses excellent scalability. In the future, new functional modules can be easily added according to different user needs, such as adding new heat exchange methods or integrating more sensors to obtain more comprehensive operating data. This allows the heating system to continue to leverage its advantages in different application scenarios, providing users with more personalized and diversified heating solutions to meet ever-changing market demands. In practical applications, this heating system demonstrates superior performance and wide applicability. For example, in the industrial production field, it can provide stable and efficient heat source support for various processes requiring precise temperature control. For some chemical reaction processes with extremely demanding heating environment requirements, the system, with its precise intelligent control and stable heating capabilities, ensures that the reaction can proceed under optimal temperature conditions, thereby improving product quality and yield.

[0039] Meanwhile, in the food processing industry, the hygiene and safety of this heating system are fully demonstrated. Thanks to the use of high-reflectivity materials and an optimized thermal insulation layer structure inside the furnace body, heat loss is reduced, making the heating process more energy-efficient and effective. Furthermore, the anti-slip and heat-insulating treatment of the furnace shell, along with the overall safety protection mechanism, ensures the safety of operators during food processing and avoids food safety hazards caused by equipment problems.

[0040] Furthermore, in the energy sector, the system's scalability offers greater possibilities for the development and utilization of new energy sources. With the continuous development of new energy technologies, such as solar thermal utilization, this heating system can be easily combined with new energy collection devices. By adding new functional modules, efficient conversion and storage of new energy sources can be achieved, contributing to the transformation of the energy structure and sustainable development.

[0041] In the medical field, this heating system also has significant applications. Many medical devices and instruments require sterilization or to maintain their activity at specific temperatures. This system can precisely meet these temperature requirements, and its remote monitoring function allows medical staff to monitor the operating status of the equipment at any time, ensuring the safety and effectiveness of the medical process.

[0042] For scientific research experiments, this heating system is an indispensable tool. Researchers often need to precisely control the temperature during various materials tests and biological experiments. The system's intelligent control system can monitor and adjust various parameters in real time, providing a stable and reliable heating environment for scientific experiments, thus contributing to the progress of scientific research and the generation of innovative results.

[0043] Example 2 Reference Figure 1 , 2 5, 6 and 7 are the second embodiment of this utility model, which is based on the previous embodiment.

[0044] In this embodiment, a feeding assembly 170 is provided on the top of the first connecting plate 120. The feeding assembly 170 includes a fixed tube 171, a connecting tube 172 disposed on the top of the fixed tube 171, and an interception net 173 disposed in the inner cavity of the fixed tube 171 for intercepting impurities.

[0045] The connecting tube 172 is sleeved on the surface of the fixed tube 171 and threadedly connected to the surface of the fixed tube 171. The upper end of the inner cavity of the fixed tube 171 is fixedly connected to the limiting ring 174, and the bottom of the intercepting net 173 is in contact with the top of the limiting ring 174.

[0046] The top of the second connecting plate 130 is connected to the discharge pipe 180, the top of the furnace body 110 is connected to the liquid inlet pipe, and the bottom of the furnace body 110 is connected to the liquid drain pipe 190.

[0047] A base 113 is fixedly connected to the bottom of the furnace body 110, a ladder 114 is fixedly connected to the front of the base 113, and the other end of the ladder 114 is fixedly connected to the top of the furnace body 110.

[0048] A baffle 157 is movably connected to one side of the cover 154 via a damping pivot, and through holes are provided on one side of the pressure plate 156 and one side of the inner cavity of the cover 154.

[0049] The first connecting plate 120 has a carefully designed and installed complete feeding assembly 170 at its top position. The feeding assembly 170 mainly consists of the following parts: a sturdy fixed tube 171, the top of which is equipped with a connecting tube 172 for connection, and an intercepting net 173 set in the cavity inside the fixed tube 171. The main function of the intercepting net 173 is to effectively intercept impurities in the incoming material.

[0050] Specifically, the connecting pipe 172 is installed on the outer surface of the fixing pipe 171 in a sleeve manner and is tightly fixed to the surface of the fixing pipe 171 by means of threaded connection. At the upper end of the inner cavity of the fixing pipe 171, a limiting ring 174 is firmly connected. The function of the limiting ring 174 is to ensure the stability of the position of the interception net 173. The bottom part of the interception net 173 is in close contact with the top part of the limiting ring 174, thereby forming an effective interception structure.

[0051] The second connecting plate 130 is connected to a discharge pipe 180 at its top position for discharging the processed material. At the same time, the top of the furnace body 110 is also designed with a liquid inlet pipe to facilitate the input of liquid, while the bottom of the furnace body 110 is connected to a discharge pipe 190 for discharging the processed liquid.

[0052] The bottom part of the furnace body 110 is firmly connected to a base 113, which not only provides stable support for the furnace body 110, but also has a ladder 114 fixedly connected to its front position. The other end of the ladder 114 is fixedly connected to the top part of the furnace body 110 to facilitate the safe entry and exit of operators.

[0053] In addition, one side of the cover 154 is movably connected to the baffle 157 via a damping pivot. This design allows the baffle 157 to open and close flexibly. Meanwhile, one side of the pressure plate 156 and one side of the inner cavity of the cover 154 are provided with through holes. These through holes are designed to allow the passage of wiring, facilitating the connection of the electric heating tube 153 to an external power source.

[0054] like Figure 1 , 2 As shown in Figures 5, 6, and 7, the feeding assembly 170 is composed of a fixed pipe 171, a connecting pipe 172, and an intercepting net 173. The fixed pipe 171 serves as the basic support structure of the feeding assembly 170, bearing the responsibility for the stability and reliability of the entire assembly. The connecting pipe 172 is sleeved on the surface of the fixed pipe 171, and the two are fixed by a threaded connection. This threaded connection design has a significant advantage, namely, it greatly facilitates disassembly and installation, making equipment maintenance more efficient and convenient.

[0055] The intercepting net 173 is installed inside the cavity of the fixed tube 171. Its main function is to intercept impurities in the material and prevent these impurities from entering the furnace body 110 with the material and causing adverse effects. In order to ensure that the intercepting net 173 can maintain a stable position inside the fixed tube 171, a limiting ring 174 is fixedly connected to the upper end of the cavity of the fixed tube 171. This limiting ring 174 plays an important role in positioning and supporting the intercepting net 173. It allows the bottom of the intercepting net 173 to contact its own top, thereby ensuring that the position of the intercepting net 173 inside the fixed tube 171 will not shift or shake, and will always remain stable.

[0056] When materials need to be added into the furnace body 110, the materials first enter the fixed pipe 171 through the connecting pipe 172. During this process, the intercepting net 173 plays a crucial role in effectively intercepting various impurities carried in the materials. This interception function is very important because if impurities enter the furnace body 110, they may cause a series of serious problems, such as clogging pipes, affecting the heating effect, or contaminating the phase change medium. These problems may hinder the normal operation of the equipment and thus affect the final product quality. Therefore, the existence of the intercepting net 173 provides a solid guarantee for ensuring the normal operation of the equipment and product quality.

[0057] In addition, since the connecting pipe 172 and the fixed pipe 171 adopt a threaded connection design, it is very convenient to periodically disassemble the interception net 173 for cleaning. When a lot of impurities accumulate on the interception net 173, the operator can easily remove the connecting pipe 172 and then take out the interception net 173 for cleaning. The whole operation process is simple and easy, without complicated tools or cumbersome steps, which greatly improves the efficiency of equipment maintenance.

[0058] The discharge pipe 180 is located at the top of the second connecting plate 130. Its main function is to discharge the material after the heating and other processes in the furnace body 110. After the material has been heated or otherwise treated in the furnace body 110 and has achieved the required heating effect or completed the corresponding process requirements, it can be discharged from the furnace body 110 through the discharge pipe 180. The purpose of this is to facilitate the subsequent processing or collection of these processed materials and ensure that the production process can proceed smoothly.

[0059] The liquid inlet pipe is connected to the top of the furnace body 110. It is an important channel for injecting phase change medium into the furnace body 110. In a vacuum environment, the phase change medium can transfer heat through its own phase change characteristics. This heat transfer method is the key to realizing the efficient heating function of the electric heating vacuum phase change furnace. Through the liquid inlet pipe, the phase change medium can be easily injected into the furnace body 110, thereby providing the necessary medium support for the heating process of the equipment and ensuring the normal operation of the heating process.

[0060] The drain pipe 190 is connected to the bottom of the furnace body 110. Its purpose is to drain the phase change medium inside the furnace body 110. When the equipment needs to replace the phase change medium or perform maintenance work, the phase change medium inside the furnace body 110 can be drained through the drain pipe 190. This provides convenient conditions for subsequent operations, and the work such as replacing the new phase change medium or repairing the equipment can be carried out more smoothly.

[0061] The base 113 is fixedly connected to the bottom of the furnace body 110, providing stable support for the entire electric heating vacuum phase change furnace. This stable support is very important, as it ensures that the equipment will not shake or tilt due to external factors during operation, thereby avoiding interference with the normal operation of the equipment. With the solid support of the base 113, the safety and stability of the equipment are effectively guaranteed.

[0062] One end of the ladder 114 is fixedly connected to the front of the base 113, and the other end is fixedly connected to the top of the furnace body 110. The ladder 114 provides operators with a convenient access for going up and down, allowing them to easily reach the top of the furnace body 110 and components at different heights for installation, maintenance, or repair. This design greatly improves the convenience and maintainability of the equipment, making the operator's work easier and more efficient.

[0063] Both the pressure plate 156 and the inner cavity of the cover 154 have through holes. These through holes are designed to facilitate the passage of connecting lines, thereby enabling the electric heating tube 153 to establish a connection with an external power source or other components and achieve efficient power transmission. At the same time, the baffle 157 can close the through holes. When no connecting line is used to connect to the electric heating tube 153, the baffle 157 can effectively prevent external impurities from entering the equipment through the through holes, avoiding various problems that impurities may cause, and further ensuring the normal operation and safety of the equipment. In the entire operating system of the electric heating vacuum phase change furnace, each component works closely together and performs its own function to jointly ensure the efficient and stable operation of the equipment. In addition to the components that have been described in detail above, some other details also play a crucial role.

[0064] A temperature monitoring device 200 is installed on the side of the furnace body 110. This device uses high-precision sensors that penetrate deep into the furnace body to monitor temperature changes inside the furnace body 110 in real time and accurately. These sensors act like keen "eyes," constantly capturing subtle temperature fluctuations and rapidly transmitting the data to the connected control center. The control center acts as the "brain" of the entire equipment, intelligently analyzing and judging this data based on preset temperature parameters. Once the temperature inside the furnace body 110 is detected to be above or below the set range, the control center will immediately issue an instruction. If the temperature is too high, the control center will appropriately reduce the power output of the electric heating tube 153 to reduce the heating intensity, so as to avoid damage to components inside the furnace body due to overheating or affecting the performance of the phase change medium. If the temperature is too low, the control center will increase the power of the electric heating tube 153 to increase the heating intensity, ensuring that the temperature inside the furnace body 110 can be maintained within a suitable range, thereby ensuring the heating effect of the material and the normal working state of the phase change medium.

[0065] At the top of the furnace body 110, a pressure monitoring device 210 is installed. Like a loyal "guardian," it closely monitors the pressure inside the furnace body 110. Since electrically heated vacuum phase change furnaces typically operate under specific pressure conditions, the stability of the pressure directly affects the safety and energy efficiency of the equipment. The pressure monitoring device 210 can accurately sense any changes in pressure inside the furnace body 110 and promptly feed this pressure data back to the control center. When the pressure inside the furnace body 110 rises abnormally, it may be due to excessive gas production during the phase change process or pipe blockage. In this case, the control center will quickly initiate corresponding pressure relief measures, such as opening the pressure relief valve to discharge excess gas from the furnace body to prevent excessive pressure from causing safety accidents. Conversely, if the pressure is too low, the control center will check for leaks and take corresponding measures to repair and adjust them to ensure that the pressure inside the furnace body 110 is always kept within a safe and stable range.

[0066] To further enhance the automation and ease of operation of the equipment, this electrically heated vacuum phase change furnace is equipped with an advanced intelligent control system 220. Operators only need to input the required process parameters, such as heating temperature, heating time, and pressure range, on the control panel. The intelligent control system 220 will automatically and precisely control each component of the equipment based on these parameters. It can automatically adjust the power of the electric heating tube 153, control the feeding speed of the feeding assembly 170, and monitor the material and liquid discharge of the discharge pipe 180 and the liquid discharge pipe 190. Simultaneously, the intelligent control system 220 also has data recording and analysis functions. It records and analyzes various data during equipment operation, such as temperature, pressure, and power consumption, in detail. Through this data analysis, operators can promptly identify potential problems and hidden dangers during equipment operation and take corresponding preventative measures, thereby improving the reliability and service life of the equipment.

[0067] In addition, a protective outer shell 230 is installed on the outside of the equipment. The protective outer shell 230 not only provides physical protection for the furnace body 110 and its internal components, preventing them from being damaged by external impacts, scratches, and dust intrusion, but also has a certain degree of heat insulation and sound insulation. It can reduce the heat dissipated from the furnace body 110, reduce energy waste, and effectively reduce the noise generated during equipment operation, creating a relatively quiet and comfortable working environment for operators. The surface of the protective outer shell 230 is treated with special wear-resistant and corrosion-resistant materials, which can resist the erosion of various harsh environments and ensure its long-term performance and appearance quality.

[0068] At the bottom of the equipment, on the base 113, vibration damping devices 240 are also installed. These vibration damping devices 240 act like "buffer pads," effectively reducing the vibration and noise generated during equipment operation. When the electric heating vacuum phase change furnace is running, it will inevitably generate a certain amount of vibration due to the heating of the electric heating tube 153 and the flow of the phase change medium. If these vibrations are not effectively controlled, they will not only affect the stability and service life of the equipment, but may also interfere with the surrounding environment and other equipment. The vibration damping devices 240, through special structures and materials, can absorb and disperse the energy of vibration, thereby greatly reducing the amplitude of vibration transmitted from the equipment to the ground. At the same time, the vibration damping devices 240 can also reduce the noise generated by vibration, further improving the user experience and the quality of the working environment.

[0069] In the equipment's operating area, clear and intuitive operation indicator signs 250 are set up. These signs act as thoughtful "guides," providing clear operational instructions for operators. Whether it's the operation buttons of the feeding component 170, the switch of the discharge pipe 180, or the display interfaces of various monitoring devices, there are corresponding signs to explain them. Operators can quickly and accurately find the parts and buttons they need to operate based on these signs, avoiding equipment failures or safety accidents caused by misoperation. Moreover, the operation indicator signs 250 use eye-catching colors and simple and easy-to-understand graphic symbols, so even newly hired operators can easily understand and master them.

[0070] With the continuous advancement of technology and the increasing demands of industrial production, electrically heated vacuum phase change furnaces are constantly being optimized and upgraded. In the future, they are expected to achieve deep integration with Internet of Things (IoT) technology, transmitting equipment operation data to a remote monitoring center in real time via the network. This allows managers to understand the equipment's operating status anytime, anywhere, and to remotely control and manage it, even when they are not on-site. At the same time, with the help of big data analysis and artificial intelligence technology, the equipment can achieve more intelligent self-diagnosis and fault prediction functions. It can detect potential faults in advance and automatically adjust operating parameters or issue maintenance reminders, thereby further improving the reliability and production efficiency of the equipment and providing stronger support for the high-quality development of industrial production.

[0071] An automatic sensing device 260 is installed near the feed inlet of the equipment. This device can accurately identify the type and flow rate of the material and transmit the data to the intelligent control system 220 in real time. Based on the received information, the intelligent control system 220 automatically adjusts the working state of the feeding component 170 to ensure that the material enters the furnace body 110 at the optimal speed, thereby avoiding the impact of excessively fast or slow feeding on heating effect and production efficiency. This design not only improves the intelligence level of the equipment but also significantly reduces the need for manual intervention, making the entire production process more efficient and stable.

[0072] Furthermore, multiple layers of baffles 270 are added inside the furnace body 110. These baffles 270, precisely calculated and optimized, effectively guide the flow path of the phase change medium and materials within the furnace. By rationally distributing the flow of the medium and materials, the baffles 270 can significantly improve the uniformity and efficiency of heat transfer, reducing local overheating or underheating, thereby further enhancing the overall performance of the equipment. Simultaneously, the surface of the baffles 270 is coated with a special high-temperature and corrosion-resistant coating, ensuring a long service life even under extreme operating conditions.

[0073] To handle emergencies, the equipment is also equipped with an emergency stop button 280, which is located in a prominent position in the operating area and has a conspicuous warning label. When an abnormal situation occurs during equipment operation, the operator only needs to press the emergency stop button 280, and the equipment will immediately stop the operation of all operating components to ensure safety. At the same time, the emergency stop system is linked with the intelligent control system 220, which can automatically record the time, location, and relevant parameters of the fault after shutdown, providing important reference for subsequent troubleshooting and maintenance.

[0074] Meanwhile, both the material discharge pipe 180 and the liquid discharge pipe 190 of the equipment are equipped with flow monitoring devices 290. These devices can detect the flow rate and velocity of the material and liquid discharge in real time and feed the data back to the control center. If an abnormal flow rate is detected, such as a sudden increase or decrease, the control center will quickly issue an alarm and take corresponding emergency measures according to the preset program, such as suspending the material or liquid discharge operation, to prevent adverse effects on subsequent processes. This feature design enables the equipment to have higher stability and reliability during continuous operation, providing a strong guarantee for the smooth operation of industrial production.

[0075] Example 3 Reference Figure 1-4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0076] In this embodiment, the descaling assembly 160 includes a servo geared motor 161, a threaded rod 162 that is driven to the output shaft of the servo geared motor 161, a threaded sleeve 163 that is threaded to the surface of the threaded rod 162, and an annular brush 164 that is fixedly connected to the top of the threaded sleeve 163 and whose inner wall is in contact with the surface of the cover tube 151.

[0077] The descaling assembly 160 specifically includes a servo geared motor 161. The output shaft of the servo geared motor 161 is connected to a threaded rod 162 via a transmission connection. A threaded sleeve 163 is threadedly connected to the surface of the threaded rod 162. An annular brush 164 is fixedly connected to the top of the threaded sleeve 163. The inner wall of the annular brush 164 is in close contact with the surface of the cover tube 151 to ensure the descaling effect.

[0078] A baffle plate is fixedly connected to the inner cavity of the first connecting plate 120, and the servo geared motor 161 is fixed to the lower end of the inner cavity of the first connecting plate 120 by bolts and threads.

[0079] A temperature sensor 111 is installed on the left side of the back of the inner cavity of the furnace body 110, and a vacuum gauge 112 is installed on the right side of the back of the inner cavity of the furnace body 110.

[0080] A microcontroller 131 is provided on one side of the second connection plate 130, and the output terminals of the temperature sensor 111 and the vacuum gauge 112 are both connected to the input terminal of the microcontroller 131.

[0081] The input terminal of the electric heating tube 153 is connected to the output terminal of the microcontroller 131, and the output terminal of the microcontroller 131 is connected to the input terminals of the vacuum pump 140 and the servo geared motor 161, respectively.

[0082] A baffle plate is fixedly connected to the inner cavity of the first connecting plate 120 to separate the internal space. The servo geared motor 161 is firmly fixed to the lower end of the inner cavity of the first connecting plate 120 by bolts and threads to ensure its stability and reliability during operation.

[0083] A temperature sensor 111 is installed on the left side of the back of the inner cavity of the furnace body 110 to monitor the temperature changes inside the furnace body 110 in real time; while a vacuum gauge 112 is installed on the right side of the back of the inner cavity of the furnace body 110 to accurately measure the vacuum level inside the furnace body 110.

[0084] A microcontroller 131 is installed on one side of the second connection plate 130. The microcontroller 131 is the control core of the entire system. The output terminals of the temperature sensor 111 and the vacuum gauge 112 are connected to the input terminal of the microcontroller 131 through wires so that the microcontroller 131 can receive and process temperature and vacuum data in real time.

[0085] The input terminal of the electric heating tube 153 is connected to the output terminal of the microcontroller 131. The microcontroller 131 controls the heating power of the electric heating tube 153 according to the received temperature data. In addition, the output terminal of the microcontroller 131 is also connected to the input terminals of the vacuum pump 140 and the servo geared motor 161 respectively, so that the microcontroller 131 can control the operation of the vacuum pump 140 and the operation of the servo geared motor 161 in real time according to the system requirements, ensuring the coordinated operation of the entire system.

[0086] like Figure 1-4As shown, by carefully configuring the descaling component 160, after the equipment has been running for a certain period of time, or according to a pre-set descaling cycle, when the microcontroller 131 receives an instruction to perform a descaling operation, it issues a start control command to the descaling component 160. In this process, the microcontroller 131 acts as the decision-maker, determining whether to initiate the descaling operation based on the equipment's operating time and the preset cycle. At this time, the microcontroller 131 sends a start signal to the servo geared motor 161. Upon receiving this start signal, the output shaft of the servo geared motor 161 begins to rotate. Since the output shaft of the servo geared motor 161 and the threaded rod 162 are connected by a transmission connection—a tight mechanical fit—the rotation of the output shaft drives the threaded rod 162 to rotate as well. The threaded rod 162 and the threaded sleeve 163 are connected by a thread, which provides a certain degree of constraint and adjustability. A ring brush 164 is fixed to the top of the threaded sleeve 163, and this ring brush 164 is fitted onto the surface of the cover tube 151. This constraint restricts the threaded sleeve 163, allowing it to move only along the axial direction of the threaded rod 162. As the threaded rod 162 rotates, the threaded sleeve 163 moves linearly along its surface. The annular brush 164, fixedly connected to the top of the threaded sleeve 163, also moves with it. The inner wall of the annular brush 164 contacts the surface of the cover tube 151, wiping the surface and removing scale. Once the annular brush 164 has finished cleaning the cover tube 151, the microcontroller 131 sends a stop signal to the servo motor 161. Upon receiving the stop signal, the servo motor 161 stops rotating, causing the threaded rod 162 to stop rotating as well. The threaded sleeve 163 and the annular brush 164 then cease moving, completing the descaling operation. If descaling is required again, the relevant components can be restarted following the above procedure.

[0087] The temperature sensor 111 is connected to the microcontroller 131, allowing the sensor to monitor the temperature inside the furnace 110 in real time and output the monitored temperature data to the microcontroller 131 as an electrical signal. Upon receiving this temperature data, the microcontroller 131 compares it with a pre-set temperature range using a precise algorithm. If the temperature exceeds or falls below the preset range, the microcontroller 131 adjusts the power output of the electric heating element 153 according to pre-set parameters to stabilize the furnace temperature within the set range. This adjustment is dynamic and timely, ensuring that the furnace temperature remains at a suitable level.

[0088] Since the vacuum gauge 112 is connected to the microcontroller 131, it can monitor the vacuum level inside the furnace 110 in real time and output the vacuum level data to the microcontroller 131 in the form of an electrical signal. After receiving this vacuum level data, the microcontroller 131 compares it with a preset vacuum level range. If the vacuum level does not meet the requirements, the microcontroller 131 will control the vacuum pump 140 to start or stop, thereby adjusting the vacuum level inside the furnace to within the set range. This series of operations is to ensure that the furnace environment meets the specific conditions required for equipment operation.

[0089] Connected to the electric heating element 153 via microcontroller 131, the microcontroller 131 can adjust the heating power of the electric heating element 153 by controlling the input current of the electric heating element 153 based on the temperature data fed back by the temperature sensor 111, thereby achieving precise control of the furnace temperature. Connected to the vacuum pump 140 via microcontroller 131, the microcontroller 131 can control the start, stop, and operating power of the vacuum pump 140 based on the vacuum level data fed back by the vacuum gauge 112, ensuring that the vacuum level inside the furnace meets the equipment's operating requirements. This precise control is crucial for the normal operation of the equipment.

[0090] Regular descaling of the surface of the cover tube 151 by the descaling component 160 effectively prevents the continuous accumulation of scale, avoiding its impact on the heat transfer between the electric heating tube 153 and the cover tube 151. This ensures that the heat generated by the electric heating tube 153 can be efficiently transferred to the phase change medium, thereby improving the overall heating efficiency of the equipment. The temperature sensor 111, vacuum gauge 112, and microcontroller 131 together form a control system. This control system can monitor and adjust the temperature and vacuum level inside the furnace in real time, ensuring that the equipment operates normally in a stable environment and preventing equipment failure due to abnormal temperature or vacuum levels. This measure greatly extends the service life of the equipment. The entire descaling process and the control of equipment operating parameters are automatically completed by the microcontroller 131, eliminating the need for frequent manual intervention. This not only improves the automation level and operational reliability of the equipment but also reduces the cost and error probability of manual operation.

[0091] From the perspective of overall system operation, the microcontroller 131, as the core control unit, acts like a commander strategizing and coordinating the work of various components in an orderly manner, ensuring that the equipment is always in a state of high efficiency and stability. The periodic descaling work of the descaling component 160 is not merely a simple cleaning of the surface of the casing 151, but rather a meticulous care for the overall thermal conductivity of the equipment. The accumulation of scale acts like an invisible barrier, hindering the smooth transfer of heat, preventing the heat generated by the electric heating element 153 from being absorbed by the phase change medium in a timely and sufficient manner, thus reducing the heating efficiency of the equipment and increasing energy consumption. By regularly descaling and promptly removing this "barrier," the equipment can maintain good thermal conductivity, like injecting a continuous source of vitality, enabling it to operate on a high-efficiency track.

[0092] Temperature sensor 111 and vacuum gauge 112 act like the "eyes" and "ears" of the equipment, constantly and sensitively sensing subtle changes in the furnace temperature and vacuum level. Temperature sensor 111 monitors the temperature inside the furnace body 110 in real time with extremely high precision, like a meticulous doctor, not missing a single temperature fluctuation. Once the temperature exceeds or falls below the preset range, the microcontroller 131 reacts quickly, precisely adjusting the power output of the electric heating tube 153, much like regulating the equipment's "body temperature," ensuring the furnace temperature remains stable within the set comfortable range. Vacuum gauge 112 works similarly, monitoring the vacuum level inside the furnace body 110 in real time, providing accurate vacuum data to the microcontroller 131. Based on this data, the microcontroller 131 flexibly controls the start, stop, and operating power of the vacuum pump 140, like a skilled craftsman meticulously crafting a vacuum environment that meets the equipment's operating requirements.

[0093] During long-term operation, this automated monitoring and control mechanism has demonstrated significant advantages. It not only improves the stability and reliability of the equipment but also reduces the risk of equipment failure due to human error. Imagine, without such an automated control system, manual operation would require a substantial investment of time and effort, and it would be difficult to guarantee precise control on every occasion. Manual monitoring of temperature and vacuum levels may introduce errors, and adjustments to the power of the electric heating element 153 and the operating status of the vacuum pump 140 may be delayed or inaccurate, all of which could adversely affect the equipment's performance and lifespan.

[0094] Now, with the microcontroller 131 and its connected sensors and components, the equipment can self-monitor and self-regulate, much like an intelligent living organism, automatically making optimal responses based on changes in the external environment and its own state. This not only improves production efficiency and reduces production costs but also provides a solid guarantee for the safe operation of the equipment.

[0095] In the long run, this highly automated equipment operation mode has broad application prospects and enormous development potential. With continuous technological advancements, we can foresee that the functions of the microcontroller 131 will become more sophisticated, the precision of sensors will be higher, and the collaboration between various components will be closer. In the future, equipment may possess more intelligent learning capabilities, automatically optimizing operating parameters based on historical operating data and real-time monitoring information, further improving equipment performance and efficiency. Simultaneously, equipment maintenance and management will become more convenient. Through remote monitoring and data analysis, technicians can promptly identify potential equipment problems and perform remote diagnosis and repair, significantly shortening maintenance time and reducing the impact on production.

[0096] Furthermore, this automated control technology can be applied to other similar industrial equipment, bringing higher efficiency and lower costs to the entire industrial production sector. In today's increasingly energy-constrained world, improving equipment energy efficiency and reducing energy consumption is of significant practical importance. This automated temperature and vacuum control technology can effectively reduce energy waste, improve energy utilization efficiency, and make a positive contribution to achieving sustainable development.

[0097] In summary, the automated monitoring and control system based on the Microcontroller 131 currently used in the equipment represents a successful application of technological advancements in industrial production. It not only provides strong support for the efficient operation of the equipment but also lays a solid foundation for the intelligent development of future industrial equipment. In the future, we have reason to believe that this technology will continue to innovate and improve, bringing more surprises and changes to industrial production. Its application will not be limited to current equipment but can be further expanded to more fields. For example, in the chemical industry, many reaction processes require specific temperature and vacuum conditions, and similar automated control systems can ensure that these conditions are always optimal, thereby improving reaction efficiency and product quality. In the food processing industry, precise temperature control is crucial for ensuring food safety and taste. By introducing such a system, precise management of heating and cooling processes can be achieved, reducing the uncertainty caused by human intervention. Furthermore, in the pharmaceutical industry, drug production has extremely stringent environmental requirements; any slight deviation can lead to product quality problems, and automated monitoring and control technology can provide more reliable technical support for drug production.

[0098] From an economic perspective, this highly automated system not only reduces labor costs but also significantly minimizes downtime and maintenance expenses caused by equipment malfunctions or operational errors. Enterprises can optimize equipment operating parameters to maximize resource utilization, thereby gaining a more advantageous position in market competition. Furthermore, with the continuous advancement of the Industry 4.0 concept, intelligent manufacturing has become the mainstream trend for future development, and this microcontroller-based automation system is a crucial component in realizing intelligent manufacturing. It not only helps enterprises digitize and intelligentize their production processes but also provides solid technical support for building smart factories.

[0099] Of course, despite the numerous advantages this technology has demonstrated, it still faces some challenges in practical applications. For example, how to further improve the sensor's anti-interference capabilities to adapt to complex and ever-changing industrial environments; how to optimize algorithms so that microcontrollers can respond more quickly and accurately to various emergencies; and how to enhance system compatibility to enable seamless integration with different types of equipment. These issues require the joint efforts of researchers and engineers to resolve. However, it is foreseeable that with the continuous development and improvement of related technologies, these challenges will eventually be overcome one by one, thereby propelling technological innovation across the entire industrial sector to new heights.

[0100] When in use, first prepare the material to be heated and the phase change medium. Then, add the material into the furnace body 110 through the connecting pipe 172 of the feeding assembly 170. Impurities are intercepted by the interception net 173, which can prevent impurities contained in the material from adhering to the heat exchange tube and causing blockage. Next, an appropriate amount of phase change medium is injected into the furnace body 110 through the liquid inlet pipe, and the vacuum pump 140 is turned on to extract the air from the furnace body 110 to form a vacuum environment. The vacuum gauge 112 monitors the vacuum degree inside the furnace body 110 in real time and outputs the vacuum degree data to the microcontroller 131 in the form of an electrical signal. After receiving the vacuum degree data, the microcontroller 131 compares it with the preset vacuum degree range. If the vacuum degree does not meet the requirements, the microcontroller 131 will control the start or stop of the vacuum pump 140 to adjust the vacuum degree inside the furnace to the set range. The vacuum environment formed inside the furnace body 110 can reduce the boiling point of the phase change medium in the later stage. Then, the microcontroller 131 controls the electric heating tube 153 to be powered on and start heating. The electric heating tube 153 converts electrical energy into heat energy to heat the phase change medium. During the heating process, the temperature sensor 111 can monitor the temperature inside the furnace body 110 in real time and output the temperature data to the microcontroller 131 in the form of an electrical signal. After receiving the temperature data, the microcontroller 131 compares it with the preset temperature range. If the temperature exceeds or falls below the preset range, the microcontroller 131 will adjust the power output of the electric heating tube 153 according to the preset parameters to control the temperature inside the furnace to stabilize within the set range. Afterwards, the phase change medium undergoes a phase change when heated. The phase change medium can vaporize and flow to the heat exchange tube, where it can exchange heat with the heated object inside, transferring the absorbed latent heat to the heated object, thereby raising the temperature of the heated object. After the heat exchange, the phase change medium will condense and fall off, returning to the electric heating area, thus realizing cyclic heating and effectively ensuring heat transfer efficiency and a stable and efficient heating environment. When descaling is required, the microcontroller 131 sends a start signal to the servo geared motor 161. Upon receiving the start signal, the output shaft of the servo geared motor 161 begins to rotate, driving the threaded rod 162 connected to it to rotate. Since the threaded rod 162 is threadedly connected to the threaded sleeve 163, and the annular brush 164 fixed at the top of the threaded sleeve 163 is fitted onto the surface of the cover tube 151, the threaded sleeve 163 is constrained to a certain extent, limiting its movement to the axial direction of the threaded rod 162. Therefore, when the threaded rod 162 rotates, the threaded sleeve 163 moves linearly along the surface of the threaded rod 162, and the annular brush 164 fixedly connected to the top of the threaded sleeve 163 moves with the threaded sleeve 163. The inner wall of the annular brush 164 is flush with the surface of the cover tube 151. 51 Surface contact, during the movement, the surface of the cover tube 151 is wiped to remove the scale layer attached to the surface of the cover tube 151, realizing the descaling operation. When the annular brush 164 finishes cleaning the surface of the cover tube 151, the microcontroller 131 sends a stop signal to the servo geared motor 161, the servo geared motor 161 stops rotating, the threaded rod 162 stops rotating, the threaded sleeve 163 and the annular brush 164 stop moving, and the descaling operation is completed. If descaling is required again, it can be restarted according to the above process. Through the design of the descaling component 160, the accumulation of scale layer is effectively prevented from affecting the heat conduction between the electric heating tube 153 and the cover tube 151, ensuring that the heat generated by the electric heating tube 153 can be efficiently transferred to the phase change medium, and improving the heating efficiency of the equipment; When the heated object reaches the set temperature or heating time, the electric heating tube 153 can be stopped by the microcontroller 131. If it is necessary to discharge the material, it can be discharged through the discharge pipe 180. If it is necessary to replace the phase change medium, the phase change medium can be discharged through the drain pipe 190 and then a new phase change medium can be injected through the inlet pipe. When the electric heating element 153 needs to be disassembled, since it is movably connected to the inner cavity of the heat-conducting seat 152, it can be easily removed for maintenance or replacement by opening the threaded cover 154. During installation, the heat-conducting seat 152 limits the electric heating element 153, and the cover 154 is threadedly connected to the cover tube 151. The return force of the spring 155 on one side of the inner cavity of the cover 154 causes the pressure plate 156 to move to one side, ensuring a tight contact between the pressure plate 156 and the electric heating element 153 under the action of the spring 155. This ensures a stable connection between the electric heating element 153 and the heat-conducting seat 152, guaranteeing good heat conduction and heating efficiency during later use. Because the entire heating furnace does not need to be shut down and opened during disassembly and assembly, time and manpower are greatly saved, production interruptions are avoided, and the operating efficiency and reliability of the equipment are improved. During operation, to ensure the safety and stability of the equipment, a detailed inspection of the furnace body is required before each start-up, especially of the sealing components and connections, to prevent the vacuum environment from failing to form or be maintained due to poor sealing. Furthermore, regular calibration of the temperature sensor and vacuum gauge is necessary to ensure the accuracy of the monitoring data, thus providing a reliable reference for the microcontroller. For the maintenance of the electric heating element, in addition to timely cleaning of surface scale, attention should be paid to the firmness of its electrical connections to avoid overheating or other malfunctions caused by poor contact. During daily use, operators should strictly follow the procedures and keep relevant records for subsequent analysis and optimization of equipment operating parameters, further improving heating efficiency and extending equipment lifespan. In practical applications, this electric heating vacuum phase change furnace structure not only effectively meets the heating needs of various industrial scenarios but also significantly improves equipment safety and ease of operation with its unique design. For example, in the food processing industry, where hygiene requirements are high, the cleaning and maintenance of the equipment's interior is particularly important. The automatic cleaning function of the descaling component can significantly reduce the workload of manual cleaning while avoiding the problem of decreased heat transfer efficiency due to scale accumulation. In addition, the modular design of the furnace body makes the replacement of key components such as electric heating tubes more efficient, thereby reducing downtime and improving the overall operating efficiency of the production line.

[0101] To further optimize equipment performance, an intelligent management system can be integrated to upload data collected by the microcontroller to the cloud for analysis. In-depth analysis of historical data can predict potential equipment failures and allow for proactive maintenance. This approach not only reduces the risk of sudden malfunctions but also extends the equipment's lifespan. Furthermore, users can adjust preset parameters, such as temperature range and vacuum level, to achieve optimal heating performance and energy efficiency for different application scenarios.

[0102] In summary, this electrically heated vacuum phase change furnace, with its innovative design concept and reliable functional configuration, provides an ideal solution for various industries requiring precise temperature control and efficient heating. It demonstrates extremely high practical value and market potential in terms of safety, stability, and maintainability.

[0103] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, apparatus, article, or method. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, apparatus, article, or method that includes that element.

[0104] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

[0105] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0106] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. An electrically heated vacuum phase change oven structure, characterized by: include The vacuum heating unit (100) includes a furnace body (110), a first connecting plate (120) and a second connecting plate (130) fixedly connected to both sides of the furnace body (110), a heat exchange tube fixedly connected to the inner cavity of the furnace body (110) and communicating with the first connecting plate (120) and the second connecting plate (130), a vacuum pump (140) fixedly connected to the top of the furnace body (110) and communicating with the furnace body (110) at its suction end, an electric heating component (150) disposed in the inner cavity of the furnace body (110) for heating, and a descaling component (160) disposed at the lower end of the inner cavity of the furnace body (110) for descaling the surface of the electric heating component (150). The electric heating assembly (150) includes a cover tube (151), a heat-conducting seat (152) fixedly connected to the inner cavity of the cover tube (151), an electric heating tube (153) movably connected to the inner cavity of the heat-conducting seat (152), a cover (154) threadedly connected to one end of the cover tube (151), a spring (155) fixedly connected to one side of the inner cavity of the cover (154), and a pressure plate (156) fixedly connected to the other end of the spring (155) and in contact with the electric heating tube (153).

2. The electric heating vacuum phase-transition furnace structure according to claim 1, wherein: The top of the first connecting plate (120) is provided with a feeding assembly (170), which includes a fixed tube (171), a connecting tube (172) disposed on the top of the fixed tube (171), and an interception net (173) disposed in the inner cavity of the fixed tube (171) for intercepting impurities.

3. The electric heating vacuum phase-transition furnace structure according to claim 2, wherein: The connecting tube (172) is sleeved on the surface of the fixed tube (171) and threadedly connected to the surface of the fixed tube (171). The upper end of the inner cavity of the fixed tube (171) is fixedly connected to a limiting ring (174), and the bottom of the intercepting net (173) is in contact with the top of the limiting ring (174).

4. The structure of the electrically heated vacuum phase change furnace as described in claim 1, characterized in that: The top of the second connecting plate (130) is connected to a discharge pipe (180), the top of the furnace body (110) is connected to a liquid inlet pipe, and the bottom of the furnace body (110) is connected to a discharge pipe (190).

5. The electric heating vacuum phase-transition furnace structure according to claim 1, wherein: The bottom of the furnace body (110) is fixedly connected to a base (113), and the front of the base (113) is fixedly connected to a ladder (114), and the other end of the ladder (114) is fixedly connected to the top of the furnace body (110).

6. The electric heating vacuum phase-transition furnace structure according to claim 1, wherein: A baffle (157) is movably connected to one side of the cover (154) via a damping pivot, and through holes are provided on one side of the pressure plate (156) and one side of the inner cavity of the cover (154).

7. The electric heating vacuum phase-transition furnace structure according to claim 1, wherein: The descaling assembly (160) includes a servo geared motor (161), a threaded rod (162) driven to the output shaft of the servo geared motor (161), a threaded sleeve (163) threaded to the surface of the threaded rod (162), and an annular brush (164) fixedly connected to the top of the threaded sleeve (163) and whose inner wall contacts the surface of the cover tube (151).

8. The structure of the electrically heated vacuum phase change furnace as described in claim 7, characterized in that: A baffle plate is fixedly connected to the inner cavity of the first connecting plate (120), and the servo geared motor (161) is fixed to the lower end of the inner cavity of the first connecting plate (120) by bolt threads.

9. The electric heating vacuum phase-transition furnace structure according to claim 7, wherein: A temperature sensor (111) is provided on the left side of the back of the inner cavity of the furnace body (110), and a vacuum gauge (112) is provided on the right side of the back of the inner cavity of the furnace body (110).

10. The electric heating vacuum phase-transition furnace structure according to claim 9, wherein: A microcontroller (131) is provided on one side of the second connecting plate (130), and the output terminals of the temperature sensor (111) and the vacuum gauge (112) are both connected to the input terminal of the microcontroller (131).

11. The electric heating vacuum phase-transition furnace structure according to claim 10, wherein: The input end of the electric heating tube (153) is connected to the output end of the microcontroller (131), and the output end of the microcontroller (131) is connected to the input ends of the vacuum pump (140) and the servo geared motor (161).

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