Infrared baking oven

Abstract

The invention discloses an infrared baking oven. The infrared baking oven comprises an oven body; the infrared heating unit is arranged on the inner wall of the box body and is used for generating infrared radiation; the infrared heating unit comprises at least one wavy heating wire, and the heating wires are wound according to concentric ring routing so as to form a uniform radiation surface; two ends of the at least one heating wire are led out and connected to a power supply; the reflecting plate is arranged on the inner wall of the box body and is used for reflecting the infrared rays radiated to the corresponding inner wall of the box body back into the box body; and the temperature control assembly is used for monitoring and controlling the heating state in the box body. According to the infrared baking oven, a uniform radiation surface can be formed through the wavy heating wires of the infrared heating units and the routing structure of the concentric rings of the wavy heating wires. Meanwhile, the irradiation angle in the box body is increased with the help of a reflecting plate, the heating state in the box body is monitored and adjusted through a temperature control assembly, and the heating uniformity is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of baking oven technology, and in particular to an infrared baking oven. Background Technology

[0002] Composite materials are widely used in aerospace, automotive, wind turbine blades, and sporting goods due to their high strength, lightweight, and corrosion resistance. The performance of thermoplastic composites is highly dependent on the quality of the heating and baking process of the resin matrix, which requires precise temperature control. While traditional hot air circulating ovens or autoclaves are widely used, they suffer from the following problems: 1. Low heat transfer efficiency: Relying on convection and conduction, the heating rate is slow, especially for thick-walled or large-sized components (such as wind turbine blades), easily leading to internal and external temperature differences. 2. High energy consumption: Hot air circulation requires maintaining a high-temperature environment for extended periods, resulting in low energy utilization. 3. Poor temperature uniformity: Uneven hot air distribution may lead to localized overheating or incomplete baking, affecting the material's mechanical properties (such as interlaminar shear strength).

[0003] Infrared baking ovens are important equipment in the molding and processing of composite materials. Their main advantage lies in their ability to directly act on the material surface through radiation, reducing the heat transfer path and increasing the heating rate, making them suitable for rapid prototyping needs.

[0004] However, traditional infrared baking ovens still suffer from uneven heating. Summary of the Invention

[0005] Therefore, it is necessary to provide an infrared baking oven that can improve heating uniformity, addressing the problem of uneven heating in traditional infrared baking ovens.

[0006] An infrared baking oven, comprising:

[0007] Box;

[0008] An infrared heating unit is disposed on the inner wall of the box and is used to generate infrared radiation; the infrared heating unit includes at least one wavy heating wire, which is wound in concentric loops to form a uniform radiation surface; the two ends of the at least one wavy heating wire are led out and connected to a power source.

[0009] A reflector, located on the inner wall of the box, is used to reflect infrared rays radiated to the corresponding inner wall of the box back into the box.

[0010] Temperature control components are used to monitor and control the heating status inside the chamber.

[0011] In one embodiment, the concentric loops of the heating wire are non-closed square loops, each non-closed square loop being nested and connected layer by layer from small to large and from the inside out; each non-closed square loop extends from its starting point in a first direction, then extends a first distance matching the current loop size, then turns to extend in a second direction perpendicular to the first direction, then extends a second distance matching the current loop size, then turns to extend in a third direction opposite to the first direction, then extends a second distance, then turns to extend in a fourth direction opposite to the second direction, and finally extends a second distance, then turns to extend in the first direction to the end point of the current loop; the starting point and end point of the next non-closed square loop are obtained by extending the loop spacing outward from the starting point and end point of the current loop.

[0012] In one embodiment, there are multiple infrared heating units arranged in parallel on the inner wall of the box; the temperature control component independently controls each of the multiple infrared heating units according to the heating state inside the box.

[0013] In one embodiment, the reflector is angle-adjustable.

[0014] In one embodiment, the temperature control component includes:

[0015] Temperature sensor to monitor the temperature inside the chamber in real time;

[0016] The temperature controller controls the heating power of the infrared heating unit in real time based on the detected temperature inside the chamber.

[0017] In one embodiment, there are multiple temperature sensors, which are deployed at multiple temperature acquisition points inside the enclosure.

[0018] In one embodiment, the temperature control component further includes a circulating fan located outside the enclosure, and the temperature controller is also used to control the start, stop and speed of the circulating fan in real time based on the detected temperature inside the enclosure.

[0019] In one embodiment, the temperature controller stores preset process parameters.

[0020] In one embodiment, the enclosure is made of heat-insulating material and a heat-insulating sealing strip is provided at the enclosure door.

[0021] In one embodiment, the exterior of the enclosure is provided with an observation window and an operation panel.

[0022] The aforementioned infrared baking oven, through the wavy heating wire and concentric ring wiring structure of the infrared heating unit, can form a uniform radiation surface. Simultaneously, a reflector is used to increase the irradiation angle inside the oven, and the temperature control component monitors and adjusts the heating status within the oven, greatly improving the problem of heating uniformity. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an infrared baking oven according to one embodiment;

[0024] Figure 2 This is a schematic diagram showing the structure and connection relationship of an infrared baking oven according to one embodiment;

[0025] Figure 3A and Figure 3B These are schematic diagrams showing the waveform structure of the heating wire in an infrared baking oven according to one embodiment;

[0026] Figure 4A This is a schematic diagram of the wiring and connection of the heating wire in an infrared baking oven according to one embodiment;

[0027] Figure 4B A perspective view of the heating wire of an infrared baking oven according to one embodiment;

[0028] Figure 5 This is a schematic diagram of the wiring of the heating wire in an infrared baking oven according to one embodiment;

[0029] Figure 6 This is a top view of the bottom surface of an infrared baking oven according to one embodiment. Detailed Implementation

[0030] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] This application provides an infrared baking oven that utilizes infrared rays for efficient heating. For example... Figure 1 As shown, the infrared baking oven includes a box body 100, an infrared heating unit 200, a reflector 300 (located opposite the infrared heating unit 200 and not explicitly shown), and a temperature control component 400.

[0037] The enclosure 100 is the outer shell and container of the infrared baking oven, typically made of high-temperature resistant insulating materials, such as polyurethane foam, which provides excellent insulation performance, effectively reducing heat loss and improving energy efficiency by more than 30% compared to traditional products. The interior of the enclosure 100 can also be insulated. An insulating sealing strip can be further installed at the door to reduce internal heat loss and maintain a stable internal temperature. The enclosure 100 may also be equipped with a high-temperature resistant glass observation window and control panel. The observation window allows for easy monitoring of the material baking status. A touch-screen control panel integrated on the front of the enclosure 100 allows all control functions to be performed via touch, greatly improving the automation level and ease of operation of the equipment.

[0038] The infrared heating unit 200 is an infrared radiation unit that can use a resistive heating element to form various heating structures. The resistive heating element can be made of materials such as nickel-chromium alloy wire. This filamentary resistive heating element is called a heating wire. The two ends of the heating wire are connected to a power source via cables. When the heating wire is energized, it generates heat, and when its temperature rises to 500-1200℃, it radiates infrared radiation. The infrared baking oven uses radiative heat transfer, allowing energy to directly act on the object being baked, reducing heat conduction.

[0039] The reflector 300 can be made of polished aluminum or silver-plated metal and is installed on the inner wall of the cabinet 100 opposite or around the infrared heating unit 200. It can reflect the infrared rays radiated by the infrared heating unit 200 towards other inner walls of the cabinet 100 back into the cabinet 100, avoiding heat waste. For example, in an industrial infrared baking oven, if the infrared heating unit 200 is installed on the bottom inner wall of the cabinet 100, a reflector 300 is installed on the top inner wall to reflect the infrared rays radiated upwards from the bottom onto the surface of the material that is not directly radiated. This can also fill the radiation dead zones between the infrared heating units 200, making the heating of all parts of the material more uniform.

[0040] refer to Figure 1 and Figure 2 The temperature control component 400 may include a temperature sensor 402 and a temperature controller 404. The temperature sensor 402 detects the temperature inside the enclosure 100 in real time and transmits the signal to the temperature controller 404. The temperature sensor 402 may be a thermocouple or similar device. The temperature sensor 402 is communicatively connected to the temperature controller 404. The temperature controller 404 receives the temperature detected by the temperature sensor 402, compares the detected temperature with a set temperature, and if the detected temperature is lower than the set value, controls the infrared heating unit 200 to heat; if the temperature is higher than the set value, it disconnects the power supply or reduces the heating power to lower the temperature.

[0041] The working process of an infrared baking oven generally includes: after power is supplied, the infrared heating unit 200 radiates infrared rays due to the thermal effect of the current. The infrared rays act directly on the material, causing the internal molecules of the material to vibrate and heat up. The reflector 300 reflects the infrared rays that are dispersed to other inner walls back into the oven body 100 and concentrate them on the material. The temperature control component 400 controls the infrared heating unit 200 in real time to ensure that the temperature inside the cavity is stable at the set value, ultimately completing the baking or drying process. Utilizing direct infrared heating provides a more efficient heating effect.

[0042] In this embodiment, to make the heating temperature inside the housing 100 more uniform, the infrared heating unit 200 includes at least one wavy heating wire. The heating wire is wound in concentric loops to form a uniform radiation surface.

[0043] The heating wire is processed into a wavy shape, such as... Figure 3A and Figure 3B As shown, the total length of the heating wire can be increased within a limited space. For example, in a heating unit with a length of 20cm, a straight heating wire is about 20cm long, while a wavy heating wire can be extended to 30-40cm. Under the same current, a longer heating wire can generate more heat and increase the intensity of infrared radiation. It can be understood that a wavy shape is a basic repeating structure, and repeating structures can include various waveforms.

[0044] Arranging the heating wires in a concentric loop allows for more even energy radiation. In some embodiments, such as... Figure 4A As shown, the concentric loops of the heating wire are non-closed square loops, with each non-closed square loop nested and connected layer by layer from small to large and from the inside to the outside. The heating wire lines in the illustration are simplified to straight lines, but are actually wavy. Figure 4A In this process, the innermost square ring is connected to the positive terminal of the power supply, and its end point is connected to the end point of the next square ring. The other end point of the next square ring is then connected to the end point of the outermost square ring, and so on, until the end point of the outermost square ring is connected to the negative terminal of the power supply. This connects all the square rings in series. It can also be understood that the square rings can be connected in parallel or in mixed configurations. Different connection methods require adjusting the wavy line parameters of the square rings to meet the requirement of uniform heating. A three-dimensional diagram of the infrared heating unit 200 formed after the heating wire wiring is shown below. Figure 4B As shown.

[0045] For the structure of a square ring, such as Figure 5As shown, taking two non-closed square loops as examples: Each non-closed square loop extends from its starting point in a first direction. After extending a first distance matching the current loop size, it turns to extend in a second direction perpendicular to the first direction. After extending a second distance matching the current loop size, it turns to extend in a third direction opposite to the first direction. After extending a second distance, it turns to extend in a fourth direction opposite to the second direction. After extending a second distance, it turns to extend in the first direction to the end point of the current loop. The starting and ending points of the current loop are then extended outwards to increase the loop spacing, resulting in the starting and ending points of the next non-closed square loop. Repeating this extension process yields the next non-closed square loop. All non-closed square loops can be connected in series. The starting point of the innermost non-closed square loop is connected to the positive power supply (or vice versa), and the ending point (or starting point, depending on whether the outermost loop is odd or even) of the outermost non-closed square loop is connected to the negative power supply (or vice versa). The starting and ending points defined here are not the actual starting and ending positions that must be followed during actual routing; they are points defined for the convenience of describing the routing extension shape.

[0046] In one embodiment, for the inner ring of the concentric ring, due to its smaller ring size, the wavy heating wire can maintain the heating wire length per unit area by reducing the peak spacing. For the outer ring of the concentric ring, with its larger ring size, the peak spacing can be appropriately increased to make the heating power per unit area of ​​the inner and outer rings more consistent, thereby ensuring the formation of a uniform radiation surface. The aforementioned concentric ring is not limited to a square ring, but can also be a circular ring, a polygonal ring, etc. Furthermore, while changing or not changing the wave repetition density of the heating wire, the uniformity of energy radiation can also be adjusted by setting different ring spacings. In some embodiments, the number of heating wires can be more than two. Taking two heating wires as an example, the innermost ring formed by one heating wire is larger than the outermost ring formed by the other heating wire, so that they can be nested and connected together.

[0047] The heating wire with the above structure is easy to wind and adjust the distribution, so that the temperature distribution is smooth, the isotherms are symmetrical, and the temperature difference gradient is less than 5 degrees Celsius / square centimeter, thus making the overall radiation more uniform.

[0048] To increase the radiation area and achieve zoned control, multiple infrared heating units 200 can be arranged side-by-side on the inner wall of the housing 100. The temperature control component 400 independently controls each of the multiple infrared heating units 200 according to the heating status within the housing 100. The side-by-side installation of multiple infrared heating units 200 can cover a larger area within the housing 100. With fewer or smaller infrared heating units 200, infrared radiation is prone to causing near-hot and far-cold distribution due to differences in radiation distance; however, the side-by-side arrangement allows infrared radiation to radiate materials from multiple directions, reducing radiation dead zones.

[0049] Temperatures at different locations within the enclosure 100 may vary due to material obstruction and differences in heat dissipation. Multiple temperature sensors 402 can be installed within the enclosure 100, positioned at multiple temperature acquisition points to collect real-time temperatures in each area. If a significant deviation occurs in the temperature at a corresponding acquisition point, the infrared heating unit 200 affecting that point can be individually controlled and adjusted. After adjustment, the individual infrared heating units 200 can be adjusted based on the temperature data collected, achieving coordinated temperature control. A PID precise temperature control algorithm is used to uniformly adjust the overall temperature.

[0050] In some embodiments, the reflector 300 is angle-adjustable. By changing the relative angle between the reflector 300 and the infrared heating unit 200 and the material, the direction of infrared reflection is controlled, further improving heating uniformity and scene adaptability. The tilt of the reflector 300 can be changed manually or automatically to adapt to heating needs. For example, when the height of the materials being baked varies, adjusting the angle of the reflector 300 can prevent infrared rays from concentrating in a certain area: if the material is short, increasing the angle of the reflector 300 allows the infrared rays to cover the material more dispersedly; if the material is tall, decreasing the angle of the reflector 300 allows the infrared rays to penetrate the surface of the material more concentratedly.

[0051] In some embodiments, such as Figure 2 As shown, the temperature control component 400 also includes a circulating fan 500 disposed outside the housing 100, and the temperature controller 404 is also used to control the start, stop and speed of the circulating fan 500 in real time according to the detected temperature inside the housing 100.

[0052] When an infrared baking oven is operating, the internal air undergoes natural convection due to the lower density of hot air compared to cold air, resulting in temperature differences at different locations within the oven chamber 100 and causing uneven heating of the materials. The circulating fan 500, through forced convection, propels airflow within the oven chamber 100, eliminating these temperature differences. Furthermore, for materials with obstructions, heating cannot proceed quickly if radiation cannot directly reach them. Airflow within the oven chamber 100 supplements heat transfer, shortening the overall baking time. The circulating fan 500 can be an axial fan, typically installed on the side or back of the oven, driving horizontal air circulation.

[0053] In some embodiments, the temperature controller 404 stores preset process parameters. These preset parameters enable automated and standardized heating processes. By pre-storing heating parameters adapted to different materials, repeated adjustments are avoided each time the material is used, while ensuring the stability of the baking effect. Process parameters are not simply single temperature values, but rather combinations of parameters including target temperature, holding time, and heating rate. For example, a process parameter might be "160℃ holding for 40 minutes, heating rate 5℃ / minute" or "80℃ holding for 60 minutes, heating rate 2℃ / minute." These parameters can be input and stored in advance via the operation panel. The built-in storage chip of the temperature controller 404 can save multiple sets of process parameters; when needed, only the corresponding set of process parameters needs to be selected. Pre-setting process parameters eliminates the need for repeated adjustments, reducing operational difficulty and avoiding quality fluctuations caused by manual adjustments. Furthermore, if process optimization is required, only modifications to existing process parameters need to be made and the parameters re-stored, flexibly adapting to the heating requirements of different materials.

[0054] The applicant provided an infrared baking oven sample that conforms to the inventive concept of this application and conducted a comparative experiment with a traditional hot air circulating oven.

[0055] Box sample parameters:

[0056] Length: Approximately 1550cm; Width: Approximately 810cm; Height: Approximately 450cm.

[0057] refer to Figure 6 The bottom surface of the enclosure features 3×5 infrared heating units arranged in a matrix. Each infrared heating unit consists of a wavy heating wire arranged in a concentric square pattern. The dimensions of each infrared heating unit are approximately 260cm×260cm.

[0058] A high-reflectivity reflector is installed on the top surface of the enclosure.

[0059] Experimental data:

[0060] PPGF40 sample (size: 150mm×150mm×5mm, reinforced polypropylene composite material, glass fiber content 40%).

[0061] Thermocouple temperature measuring instrument (accuracy ±0.5℃).

[0062] Power meter (records real-time energy consumption).

[0063] Infrared thermal imager (for monitoring temperature distribution).

[0064] Experimental steps:

[0065] Preheating stage: Set the target temperature to 180℃ and record the time required for both ovens to rise from room temperature to 180℃.

[0066] Constant temperature phase: Maintain a constant temperature of 180℃ for 1 hour, and monitor temperature fluctuations and energy consumption.

[0067] Cooling phase: Turn off the heating and record the time it takes for the temperature to cool naturally to 80°C.

[0068] Material performance testing: After heating, the changes in surface quality and mechanical properties (tensile strength, flexural strength) of the PPGF40 sample were detected.

[0069] Table 1 Experimental subjects

[0070] Infrared baking oven samples Traditional hot air circulating oven (control group) Heating method Infrared radiation (heated by nickel-chromium alloy wire, wavelength 0.754-1000μm) Electric heating element + forced hot air circulation Temperature control range Ambient temperature ~ 250℃ Ambient temperature ~ 250℃ Temperature uniformity ±2.5℃ (actual measurement) ±8℃ (actual measurement) Energy consumption Energy consumption: 1.8kW (peak) 3.5kW (peak) Additional features Forced convection fan, intelligent temperature control system Mechanical temperature control

[0071] According to the experimental results in Table 1, traditional ovens rely on air convection, resulting in large heat loss, slow heating, and high energy consumption.

[0072] Table 2 Comparison of Heating Performance

[0073] index Infrared baking oven samples Traditional hot air drying oven Comparison results Preheating time (room temperature → 260°C) 12 minutes 28 minutes Infrared drying oven is 133% faster. Temperature fluctuations during the constant temperature phase ±2.5℃ ±8℃ Infrared ovens are more stable Energy consumption (1 hour constant temperature) 1.2kWh 2.8kWh Infrared ovens save 57% energy.

[0074] According to the experimental results in Table 2, the infrared oven sample has high thermal efficiency and rapid heating.

[0075] Table 3 Tensile Test Results

[0076] Test Project Unheated PPGF40 After heating in the infrared oven After heating in a traditional oven Tensile strength (MPa) 85 83 78 Bending strength (MPa) 120 118 110 Surface quality smooth No change Slightly yellow

[0077] According to the experimental results in Table 2, with precise control of the infrared heating temperature, the mechanical properties of PPGF40 show almost no degradation. Traditional ovens cause slight degradation of the material due to localized overheating, resulting in a 5% to 8% decrease in mechanical properties. Therefore, this product can heat the material more evenly, reducing the loss of mechanical properties.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An infrared baking oven, characterized in that, include: Box; An infrared heating unit is disposed on the inner wall of the box and is used to generate infrared radiation; the infrared heating unit includes at least one wavy heating wire, which is wound in concentric loops to form a uniform radiation surface; the two ends of the at least one wavy heating wire are led out and connected to a power source. A reflector, located on the inner wall of the box, is used to reflect infrared rays radiated to the corresponding inner wall of the box back into the box. Temperature control components are used to monitor and control the heating status inside the chamber.

2. The infrared baking oven according to claim 1, characterized in that, The concentric loops of the heating wire are non-closed square loops, and each non-closed square loop is nested and connected layer by layer from small to large and from the inside to the outside. Each non-closed square loop extends from the starting point in a first direction, and after extending a first distance matching the current loop size, it turns to extend in a second direction perpendicular to the first direction. After extending a second distance matching the current loop size, it turns to extend in a third direction opposite to the first direction. After extending a second distance, it turns to extend in a fourth direction opposite to the second direction. After extending a second distance, it turns to extend in the first direction to the end point of the current loop. By extending the distance outward from the starting and ending points of the current ring, the starting and ending points of the next non-closed square ring can be obtained.

3. The infrared baking oven according to claim 1, characterized in that, The infrared heating units are multiple and arranged side by side on the inner wall of the box; the temperature control component independently controls each of the multiple infrared heating units according to the heating state inside the box.

4. The infrared baking oven according to claim 1, characterized in that, The reflector is angle-adjustable.

5. The infrared baking oven according to claim 1, characterized in that, The temperature control component includes: Temperature sensor to monitor the temperature inside the chamber in real time; The temperature controller controls the heating power of the infrared heating unit in real time based on the detected temperature inside the chamber.

6. The infrared baking oven according to claim 5, characterized in that, There are multiple temperature sensors, which are installed at multiple temperature acquisition points inside the box.

7. The infrared baking oven according to claim 5, characterized in that, The temperature control component also includes a circulating fan located outside the enclosure, and the temperature controller is also used to control the start, stop and speed of the circulating fan in real time based on the detected temperature inside the enclosure.

8. The infrared baking oven according to claim 5, characterized in that, The temperature controller stores preset process parameters.

9. The infrared baking oven according to claim 1, characterized in that, The enclosure is made of heat-insulating material, and a heat-insulating sealing strip is installed at the door.

10. The infrared baking oven according to claim 1, characterized in that, The exterior of the enclosure is equipped with an observation window and an operation panel.

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