An adaptive temperature control tunnel furnace

By introducing temperature sensors and air supply mechanisms into the tunnel furnace, combined with a PLC controller, adaptive temperature control is achieved, solving the problem of unsatisfactory temperature control in the tunnel furnace, improving the quality of handicrafts and reducing costs.

CN224580692UActive Publication Date: 2026-07-31SHENZHEN RUILAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN RUILAN TECH CO LTD
Filing Date
2025-08-05
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The temperature control capability of existing tunnel furnaces is not ideal, making it difficult to meet high process requirements, resulting in substandard finished products.

Method used

Temperature sensors are used to monitor the temperature inside the tunnel in real time, and the temperature is kept within a preset range through dynamic adjustment of the air supply mechanism and heating device. Combined with a PLC controller, adaptive temperature control is achieved.

Benefits of technology

Precise temperature control inside the tunnel furnace has been achieved, improving the quality of the handicrafts and reducing production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to an adaptive temperature-controlled tunnel furnace, belonging to the field of tunnel furnace technology. It includes: a first support frame, several heating devices mounted on the first support frame, several temperature sensors arranged in a linear array on the first support frame, and an air supply mechanism mounted on a second support frame. If the temperature data in various areas within the tunnel between the first and second supports is not within a preset temperature threshold range, the air supply mechanism makes adjustments. This utility model, through the integrated use of temperature sensors and the air supply mechanism, dynamically adjusts the air supply mechanism and heating devices when the temperature data within the tunnel is not within the preset temperature range, ensuring that the temperature data within the tunnel remains within the preset temperature range. This achieves adaptive temperature control, meeting the processing needs of certain special handicrafts, improving the quality of the handicrafts, and thereby reducing production costs.
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Description

Technical Field

[0001] This utility model relates to the field of tunnel furnace technology, and in particular to a tunnel furnace with adaptive temperature control. Background Technology

[0002] A tunnel oven is a tunnel-shaped mechanical device that bakes food through heat conduction, convection, and radiation. The product is conveyed by a chain conveyor, steel belt, or mesh belt, creating relative movement between the product and electric heating elements or direct-fired burners, thus achieving uniform baking. Tunnel ovens include electric tunnel ovens, gas-fired tunnel ovens or natural gas tunnel ovens, and flame tunnel ovens. Different heat sources are suitable for different production environments and needs. For example, electric tunnel ovens are relatively clean and easy to control in temperature, making them suitable for food processing with high hygiene requirements; gas-fired tunnel ovens are characterized by fast heating speed and relatively low cost. Tunnel ovens are widely used in industries such as non-woven fabrics, textiles, meltblown fabrics, electronics, motors, communications, electroplating, plastics, hardware and chemicals, printing, pharmaceuticals, PC boards, powder coatings, impregnation, spraying, glass, ceramics, and wood building materials for precision baking, drying, tempering, preheating, shaping, and processing. However, currently, the temperature control capabilities of tunnel ovens are not ideal, making it difficult to achieve the desired results when processing some crafts with high technological requirements, leading to substandard products. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art and provides an adaptive temperature control tunnel furnace.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides an adaptive temperature-controlled tunnel furnace, comprising:

[0006] A first support, a plurality of heating devices mounted on the first support, and a plurality of temperature sensors arranged in a linear array on the first support.

[0007] A second bracket is fixedly connected to the first bracket, and a tunnel is formed between the first bracket and the second bracket;

[0008] Temperature data of various areas inside the tunnel of the first and second supports are collected by the temperature sensor.

[0009] An air supply mechanism is provided on the second support. If the temperature data of each area inside the tunnel between the first and second supports is not within the preset temperature threshold range, the air supply mechanism will be used for adjustment.

[0010] Furthermore, in the adaptive temperature-controlled tunnel furnace, a conveyor line is installed on the first support, and a conveyor outlet is provided at one end of the first support, while the other end is a conveyor inlet.

[0011] Furthermore, the adaptive temperature-controlled tunnel furnace also includes a PLC controller, and the entire device is controlled by the PLC controller.

[0012] Furthermore, in the adaptive temperature-controlled tunnel furnace, the air supply mechanism includes an inner liner, on which a plurality of through holes arranged in a linear array are opened, and a fan is arranged above the inner liner.

[0013] Furthermore, in the adaptive temperature-controlled tunnel furnace, the inner liner is made of 316 stainless steel.

[0014] Furthermore, in the adaptive temperature-controlled tunnel furnace, the tunnel furnace also includes a door closing mechanism.

[0015] Furthermore, in the adaptive temperature-controlled tunnel furnace, the door closing mechanism includes a cylinder mounted on the second bracket, the output end of the cylinder being connected to the door panel, and a linear guide rail being mounted on one side of the door panel, the linear guide rail being mounted on the second bracket.

[0016] Furthermore, in the adaptive temperature-controlled tunnel furnace, the door panel is made of 304 stainless steel.

[0017] Furthermore, in the adaptive temperature-controlled tunnel furnace, exhaust pipes are provided at both the inlet and closing ends of the second support.

[0018] This utility model solves the defects existing in the background technology, and this utility model has the following features:

[0019] Beneficial effects:

[0020] This invention combines a temperature sensor and an air supply mechanism to dynamically adjust the air supply mechanism and heating device when the temperature data inside the tunnel is outside the preset temperature range, so that the temperature data inside the tunnel is within the preset temperature range. This achieves adaptive temperature control, which can meet the processing needs of some special handicrafts, improve the quality of the handicrafts, and thus reduce production costs. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0022] Figure 1 A three-dimensional structural diagram of a tunnel furnace with adaptive temperature control;

[0023] Figure 2 A side view of the tunnel furnace with adaptive temperature control.

[0024] Figure 3 A schematic diagram of the first cross-sectional structure of an adaptive temperature-controlled tunnel furnace;

[0025] Figure 4 A schematic diagram of the second cross-sectional structure of an adaptive temperature-controlled tunnel furnace;

[0026] Figure 5 A partial three-dimensional structural diagram of a tunnel furnace with adaptive temperature control;

[0027] Figure 6 This is a schematic diagram of the internal structure of a tunnel furnace with adaptive temperature control.

[0028] In the picture:

[0029] 1. First support, 2. Heating equipment, 3. Temperature sensor, 4. Second support, 5. Air supply mechanism, 6. Exhaust pipe, 7. Conveyor line, 8. Door closing mechanism, 9. Conveyor inlet, 10. PLC controller, 11. Conveyor outlet, 501. Inner liner, 502. Fan, 5011. Through hole, 801. Cylinder, 802. Door panel, 803. Linear guide rail. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, references to "embodiment," "one embodiment," "some embodiments," or "other embodiments" indicate that a specific feature, structure, or characteristic described in connection with an embodiment is included in at least some embodiments, but not necessarily all embodiments. Multiple appearances of "embodiment," "one embodiment," or "some embodiments" do not necessarily refer to the same embodiment. If the specification describes a component, feature, structure, or characteristic as "may," "may," or "can" be included, then that particular component, feature, structure, or characteristic is not required to be included. If the specification or claims refer to an element "a," it does not mean that there is only one element. If the specification or claims refer to "an additional" element, it does not exclude the existence of more than one additional element. Furthermore, specific features, structures, functions, or characteristics can be combined in any suitable manner into one or more embodiments. For example, a first embodiment can be combined with a second embodiment, provided that the specific features, structures, functions, or characteristics associated with the two embodiments are not mutually exclusive.

[0032] In the description of this utility model, unless otherwise specified, ordinal adjectives such as "first," "second," and "third" are used to describe common objects, indicating only different instances of the same object, and not implying that the objects described must be in a given order, whether temporally, spatially, sequentially, or in any other way. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] like Figures 1 to 6 As shown, this utility model provides an adaptive temperature-controlled tunnel oven, comprising: a first support 1, a plurality of heating devices 2 disposed on the first support 1, and a plurality of temperature sensors 3 disposed in a linear array on the first support 1, and a second support 4 fixedly connected to the first support 1, wherein a tunnel is formed between the first support 1 and the second support 4; temperature data of various areas within the tunnel of the first support 1 and the second support 4 are collected by the temperature sensors 3; an air supply mechanism 5 is disposed on the second support 4, and if the temperature data of various areas within the tunnel of the first support 1 and the second support 2 are not within a preset temperature threshold range (e.g., a temperature range of 100-120 degrees Celsius), the air supply mechanism 5 is used for adjustment.

[0035] It should be noted that when the temperature data of various areas within the tunnel of the first support 1 and the second support 2 is not within the preset temperature threshold range (e.g., a temperature range of 100-120 degrees Celsius), if it is lower than the lower deviation (100 degrees Celsius) of the preset temperature threshold range, the air supply mechanism 5 stops, and the power of the heating equipment (e.g., heating wire, heating tube, etc.) is increased until it is within the preset temperature threshold range. When the temperature data of various areas within the tunnel of the first support 1 and the second support 2 is not within the preset temperature threshold range (e.g., a temperature range of 100-120 degrees Celsius), if it is higher than 120 degrees Celsius, the air supply mechanism 5 can be activated to accelerate the internal airflow, thereby expelling some heat from the exhaust pipe to lower the temperature until the temperature data of various areas within the tunnel of the first support 1 and the second support 2 is within the preset temperature threshold range.

[0036] Furthermore, in the adaptive temperature-controlled tunnel furnace, a conveyor line 7 is installed on the first support 1, and a conveyor outlet is provided at one end of the first support 1, while the other end is a conveyor inlet 9.

[0037] It should be noted that the handicrafts (such as lithium battery materials, refractory materials, ceramic materials, etc.) are fed into the tunnel furnace through the conveying inlet 9, and after being calcined for a predetermined time, they are conveyed out through the conveying outlet 11.

[0038] Furthermore, the adaptive temperature-controlled tunnel furnace also includes a PLC controller 10, and the entire device is controlled by the PLC controller 10.

[0039] Furthermore, in the adaptive temperature-controlled tunnel furnace, the air supply mechanism 5 includes an inner liner 501, on which a plurality of through holes 5011 arranged in a linear array are opened, and a fan 502 is arranged above the inner liner.

[0040] It should be noted that if the temperature data of each area inside the tunnel of the first support 1 and the second support 2 is not within the preset temperature threshold range (such as a temperature range of 100-120 degrees Celsius), such as when it is higher than 120 degrees Celsius, the fan 502 can be started, and the airflow enters the interior of the tunnel through the through hole 5011, thereby accelerating the internal airflow and expelling some heat from the exhaust pipe to reduce the temperature until the temperature data of each area inside the tunnel of the first support 1 and the second support 2 is within the preset temperature threshold range.

[0041] Furthermore, in the adaptive temperature-controlled tunnel furnace, the inner liner 501 is made of 316 stainless steel.

[0042] Furthermore, in the adaptive temperature-controlled tunnel furnace, the tunnel furnace also includes a door closing mechanism 8.

[0043] Furthermore, in the adaptive temperature-controlled tunnel furnace, the door closing mechanism 8 includes a cylinder 801 mounted on the second bracket 4. The output end of the cylinder 801 is connected to the door panel 802. A linear guide rail 803 is mounted on one side of the door panel 802, and the linear guide rail 803 is mounted on the second bracket 4.

[0044] It should be noted that during calcination, the door panel 802 is driven by the cylinder 801, which enables the door panel 802 to move linearly, thereby closing the output outlet, avoiding excessive heat loss and saving heating costs.

[0045] Furthermore, in the adaptive temperature-controlled tunnel furnace, the door panel is made of 304 stainless steel.

[0046] Furthermore, in the adaptive temperature-controlled tunnel furnace, exhaust pipes 6 are provided at both the inlet and closing ends of the second support 4.

[0047] It should be noted that when the temperature data of each area inside the tunnel of the first support 1 and the second support 2 is not within the preset temperature threshold range (such as setting the temperature range of 100-120 degrees Celsius), some heat is discharged from the exhaust pipe 6 to reduce the temperature until the temperature data of each area inside the tunnel of the first support 1 and the second support 2 is within the preset temperature threshold range.

[0048] In summary, this utility model, through the integrated combination of temperature sensor and air supply mechanism, dynamically adjusts the air supply mechanism and heating device when the temperature data inside the tunnel is not within the preset temperature range, so that the temperature data inside the tunnel is within the preset temperature range, achieving adaptive temperature control. This meets the processing needs of some special handicrafts, improves the quality of the handicrafts, and thus reduces production costs.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

[0050] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A self-adapting temperature-controlled tunnel furnace, characterized in that, include: A first support, a plurality of heating devices mounted on the first support, and a plurality of temperature sensors arranged in a linear array on the first support. A second bracket is fixedly connected to the first bracket, and a tunnel is formed between the first bracket and the second bracket; Temperature data of various areas inside the tunnel of the first and second supports are collected by the temperature sensor. An air supply mechanism is provided on the second support. If the temperature data of each area inside the tunnel between the first and second supports is not within the preset temperature threshold range, the air supply mechanism will be used for adjustment.

2. The self-adapting temperature-controlled tunnel furnace according to claim 1, characterized in that, A conveyor line is installed on the first support, and a conveyor outlet is provided at one end of the first support, while the other end is a conveyor inlet.

3. The self-adapting temperature-controlled tunnel furnace according to claim 1, characterized in that, It also includes a PLC controller, through which the entire device is controlled.

4. The self-regulating temperature-controlled tunnel furnace of claim 1, wherein, The air supply mechanism includes an inner liner with a plurality of through holes arranged in a linear array, and a fan is arranged above the inner liner.

5. The self-regulating temperature-controlled tunnel furnace according to claim 4, characterized in that, The inner liner is made of 316 stainless steel.

6. The self-regulating temperature-controlled tunnel furnace of claim 1, wherein, The tunnel furnace also includes a door closing mechanism.

7. A self-regulating temperature-controlled tunnel furnace according to claim 6, characterized in that, The door closing mechanism includes a cylinder mounted on the second bracket, the output end of the cylinder being connected to the door panel, and a linear guide rail mounted on one side of the door panel, the linear guide rail being mounted on the second bracket.

8. The self-regulating temperature-controlled tunnel furnace of claim 7, wherein, The door panel is made of 304 stainless steel.

9. The self-regulating temperature-controlled tunnel furnace of claim 1, wherein, Both the inlet and closing ends of the second bracket are equipped with exhaust pipes.