Constant-temperature air-speed-control humidity-control drying oven

Abstract

The utility model discloses a constant-temperature, wind speed and humidity control drying oven and an implementation method of the constant-temperature, wind speed and humidity control drying oven. The device comprises a drying unit, a first temperature control unit, a first air circulation supply unit, a temperature control unit, an air speed control unit, a master control unit, a second air circulation supply unit, a humidifying unit and a second temperature control unit. The device can control the temperature and humidity in the drying oven and automatically adjust the air speed, can be used for automatic constant-temperature drying of roll type membrane materials and sheet type membrane materials, and can also be used for verification tests under specific temperature and humidity conditions. The problems that the difficulty of manual intervention on the humidity of the drying oven is large, the hot air loss of the drying oven is large, and hot air circulation of the drying oven is difficult are solved, and in addition, the device can achieve full-automatic and high-precision constant-temperature drying on the roll type membrane materials and the sheet type membrane materials according to the preset temperature and humidity.

Description

Technical Field

[0001] This technical solution mainly relates to the fields of "industrial drying oven technology", "environmental temperature and humidity control technology", and "automation control technology", and in particular to a constant temperature, wind speed and humidity control drying oven. Background Technology

[0002] In the production of in vitro diagnostic test strips, membrane drying is a crucial step that directly impacts product quality and performance. Traditional drying ovens typically only have basic heating functions and lack precise control over the internal environment, resulting in unstable drying effects, high energy consumption, and ineffective moisture removal, affecting the uniformity and quality of membrane drying. These ovens often employ simple hot air circulation systems without temperature and humidity detection and automatic adjustment capabilities, requiring operators to monitor and adjust the oven's operation in real time, increasing labor intensity and operational difficulty.

[0003] Some drying ovens, while equipped with temperature and humidity detection functions, lack effective moisture removal mechanisms. This prevents timely removal of moisture from the oven's interior under high humidity conditions, affecting drying efficiency and product quality. Other ovens, although designed with moisture removal systems, fail to automatically adjust the removal rate based on actual humidity changes, resulting in inaccurate moisture removal, wasted energy, and potential environmental pollution.

[0004] Furthermore, most existing drying ovens are designed for fixed-position drying of specific materials, making them unsuitable for the efficient drying of materials in motion. Additionally, temperature control of materials in motion requires addressing heat loss and replenishment to achieve a relatively constant temperature within the oven.

[0005] To address the aforementioned issues, existing oven technology solutions have the following shortcomings:

[0006] 1. For drying membrane materials during operation, the internal environment of the drying oven is not precisely controlled, and automatic adjustment of temperature and humidity cannot be achieved, resulting in unstable drying effect.

[0007] 2. Existing drying ovens are mainly used for the closed drying of stationary materials, and are not suitable for the stable drying of materials in motion.

[0008] 3. The operation is complex, requiring manual monitoring and adjustment of the oven's working status, which increases labor intensity and operational difficulty.

[0009] 4. High energy consumption and lack of energy-saving measures lead to increased production costs.

[0010] 5. Existing equipment has limited functionality, which restricts its scalability.

[0011] 6. Existing drying ovens cannot guarantee the uniformity of drying film materials, and the unidirectional circulation of hot air often results in the near-air end being dried first. Utility Model Content

[0012] Based on this, this technical solution mainly solves the following problems: 1) For drying open materials, the internal environment control of the drying oven is not precise, and the automatic adjustment of temperature and humidity cannot be achieved, resulting in unstable drying effect; 2) For drying materials in motion, it is necessary to solve the technical problems of heat loss and maintaining efficient drying within a specific temperature range; 3) The operation is complicated, requiring manual monitoring and adjustment of the working status of the drying oven, which increases labor intensity and operational difficulty; 4) The energy consumption is high, and the lack of energy-saving measures leads to increased production costs; 5) The film (roll) type film is etched and sprayed with gold, and the material environment is tested under specific temperature and humidity conditions.

[0013] The purpose of this invention is to overcome the shortcomings of the prior art and provide a constant temperature, airflow, and humidity control oven. This oven features precise internal environment control, automatic temperature and humidity adjustment, automatic moisture removal, and energy saving.

[0014] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a constant temperature, wind speed, and humidity controlled drying oven, comprising:

[0015] A drying unit, which includes a material handling component, can be used for drying rolled or sheet materials;

[0016] The first temperature control unit includes a temperature sensing component and a heating component, wherein the heating component can adjust the temperature of fresh air and circulating air according to the temperature value.

[0017] The first air circulation supply unit includes a first air circulation component and a fresh air control component. The fresh air control component is surrounded by a heating component. The first air circulation component is located after the heating component and before the drying unit.

[0018] A humidity control unit, comprising a humidity sensing component and an exhaust component, wherein the exhaust component is located on the upper part of the drying unit and can adjust the air volume according to the feedback value of the humidity sensing component in the drying unit;

[0019] A wind speed control unit, comprising a wind speed sensing component, which can display a wind speed value and is used to adjust the circulating wind speed;

[0020] The main control unit is connected to the drying unit, the first temperature control unit, the first air circulation supply unit, the humidity control unit, and the wind speed control unit, respectively, and is used to control the drying unit, the first temperature control unit, the first air circulation supply unit, the humidity control unit, and the wind speed control unit.

[0021] The second air circulation supply unit includes a second air circulation component, which is arranged in parallel with the first air circulation component and can alternately supply air circulation in the forward and reverse directions.

[0022] The humidification unit can be one or more of ultrasonic humidifiers, evaporative humidifiers, and electric heating humidifiers. The humidification unit can set the test environment humidity according to the standard of the material to be tested.

[0023] The second temperature control unit includes an electric heating element, which is arranged parallel to the running direction of the material to be dried and at a distance of 5-10 mm from the material to be dried, and can provide stable radiant heat to the material to be dried.

[0024] Furthermore, the fresh air control component is one or both of a fan or a valve, which can control the air volume;

[0025] Furthermore, the heating element can be a PTC electric heater, with at least one unit provided. The main control unit controls the temperature value and the frequency of power-on to achieve heating and temperature control of the airflow passing through the heating element.

[0026] Furthermore, the circulating air component is a centrifugal fan or a ducted fan, which can stably deliver the heated air into the drying unit.

[0027] Furthermore, the exhaust component includes an electric control element or a manual control element, which can control the exhaust volume of the drying unit. The electric control element is located at the top of the drying oven and can automatically adjust the opening size or exhaust volume of the exhaust component based on the output data of the humidity sensor to control the exhaust volume. The manual control element is located at the top of the drying oven and can manually control the air volume. Then, based on the output data of the humidity sensor, it can automatically adjust the fresh air intake and the circulating air volume of the circulating air component to control the humidity value.

[0028] Furthermore, the material handling component is located within the drying unit and can store and transport rolled or non-rolled materials. There is a partition with multiple rows of air holes between the drying unit and the first and second air circulation supply units. The air circulation supply units and the second air circulation supply units work alternately on a regular basis, which can realize the periodic reversible exchange of the direction of the heated airflow in the drying unit, and finally form a transverse bidirectional constant temperature and speed controlled airflow in the drying unit.

[0029] The beneficial effects of this invention are as follows: 1. Improved drying efficiency: The constant temperature, wind speed, and humidity controlled oven of this invention, through the first and second air circulation supply units, can quickly and evenly heat the film material, improving drying efficiency. 2. Precise temperature and humidity control: Through built-in temperature and humidity sensors, this invention can monitor the temperature and humidity inside the oven in real time, and automatically adjust the heating components, fresh air control components, circulating air components, and exhaust components according to the monitoring results, ensuring a stable internal environment and improving drying quality. 3. Energy saving and consumption reduction: The oven of this invention adjusts the ratio of circulating air volume to fresh air volume through the circulating air component, reducing energy consumption. Simultaneously, the radiant heat provided by the PI film further reduces energy consumption. 4. Automated operation: The oven of this invention has automated hot air circulation and moisture warning and discharge functions, reducing manual operation and improving production efficiency and safety. 5. Strong adaptability: The oven design of this invention can adapt to the drying needs of materials in motion, avoiding problems such as large temperature fluctuations and poor drying effects, exhibiting strong adaptability and flexibility. 6. Improved Product Quality: By precisely controlling the temperature and humidity during the drying process, this invention effectively avoids damage to the membrane material caused by excessively high temperature or unsuitable humidity, thus improving product quality. 7. Increased Drying Efficiency: Based on feedback values ​​from humidity and wind speed sensors, the ventilation volume is adjusted to enhance the drying effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a constant temperature, wind speed and humidity control oven according to the present invention;

[0032] Figure 2 This is a left view of a constant temperature, wind speed and humidity control oven according to the present invention;

[0033] Figure 3 This is a frame diagram of a constant temperature, wind speed and humidity control drying oven according to the present invention;

[0034] Figure 4 This is a frame diagram of a constant temperature, wind speed and humidity controlled drying oven according to an embodiment of this utility model;

[0035] Figure 5 This is a flowchart of a constant temperature, wind speed and humidity control oven according to an embodiment of this utility model. Detailed Implementation

[0036] 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.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] In addition, the term "and / or" in the text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] Example 1

[0040] like Figure 1 - Figure 3 As shown, this application provides a technical solution in one aspect: a constant temperature, wind speed and humidity control oven, including a drying unit 80, a first temperature control unit, a first air circulation supply unit, a humidity control unit, a wind speed control unit and a main control unit;

[0041] In this embodiment, the first temperature control unit includes a temperature sensing component 90 and a heating component 20. The heating component 20 can adjust the temperature of fresh air and circulating air according to the temperature value.

[0042] Specifically, the air intake of the fresh air control component 10 first passes through the heating component 20, and the amount of fresh air entering can be adjusted according to needs; the fresh air control component 10 is one or both of a fan or a valve, which can realize the control of air volume;

[0043] Specifically, the heating element 20 is located around the fresh air control element 10 and has a flat plate structure, which can maintain the temperature of the circulating air entering the drying unit 80 within the target range. The heating element can be a PTC electric heater, and at least one is installed. The main control unit controls the temperature value and the frequency of power-on to achieve heating and temperature control of the airflow passing through the heating element.

[0044] In this embodiment, the first air circulation supply unit includes a first circulating air component 30 and a fresh air control component 10. The fresh air control component 10 is surrounded by the heating component 20, and the first circulating air component 30 is located in front of the drying unit 80 after the heating component.

[0045] Specifically, the first circulating air component 30 and the second circulating air component 31 are centrifugal fans or ducted fans, which can guide the mixed heated air and fresh air into the drying unit 80 in the forward and reverse directions according to the feedback value of the wind speed sensor component 50.

[0046] In this embodiment, the humidity control unit includes a humidity sensing component 60 and an exhaust component 70. The exhaust component 70 is placed on the upper part of the drying unit 80 and can adjust the air volume according to the feedback value of the humidity sensing component 60 in the drying unit 80.

[0047] Specifically, the humidity control unit can feed back the detection value of the humidity sensor 60 to the main control unit, and control the exhaust component 70 and other linkage components to adjust the humidity inside the oven.

[0048] Specifically, the exhaust component 70 includes an electric control element or a manual control element, which can control the exhaust volume of the drying unit 80. The electric control element is located at the top of the oven and can automatically adjust the opening size or exhaust volume of the exhaust component 70 according to the output data of the humidity sensor to achieve exhaust volume control. The manual control element is located at the top of the oven and can realize manual control of the exhaust volume. Then, according to the output data of the humidity sensor, it can automatically adjust the fresh air intake and the circulating air volume of the circulating fan to achieve humidity control.

[0049] In this embodiment, the material handling component 85 is located inside the drying unit 80 and can handle rolled or non-rolled materials. There is a partition with multiple rows of air holes between the drying unit and the first air circulation supply unit and the second air circulation supply unit. The air circulation supply unit and the second air circulation supply unit work alternately on a regular basis, which can realize the periodic reversible exchange of the direction of the heated airflow in the drying unit, and finally form a transverse bidirectional constant temperature and speed controlled airflow in the drying unit.

[0050] The technical effects of this embodiment are as follows:

[0051] This constant temperature, wind speed, and humidity control oven facilitates real-time adjustment of the temperature sensor and heating components by the first temperature control unit, continuous supply of constant hot air to the drying unit by the first air circulation unit, real-time monitoring and adjustment of humidity inside the oven by the humidity control unit, and adjustment of air intake speed by the wind speed control unit according to temperature and humidity requirements and wind speed value. This achieves multi-functional integration of the equipment, improving production efficiency and automation level.

[0052] Example 2

[0053] This embodiment is a modified embodiment of embodiment 1.

[0054] like Figure 4 As shown, the constant temperature, wind speed and humidity control oven also includes a second air circulation supply unit. The second air circulation supply unit includes a second air circulation component 31. The second air circulation component 31 is arranged in parallel with the first air circulation component 30 and can alternately supply air circulation in the forward and reverse directions with the first air circulation component 30.

[0055] When the second air circulation supply unit is working, the first air circulation supply unit stops working, that is, the first circulation air component 30 stops working and the second circulation air component 31 starts working; the original first air circulation duct stops supplying hot air and instead becomes a duct for circulating hot air. At this time, the direction of the hot air in the drying unit 80 changes from left to right to right to left.

[0056] The first circulating air component 30 and the second circulating air component 31 work alternately, with only one component allowed to work at a time. Through the bidirectional circulating air supply mode, uneven heating and drying caused by hot air at the far end of the oven can be avoided, thus achieving uniform drying of materials in the oven.

[0057] The technical effects of this embodiment are as follows:

[0058] By utilizing this constant temperature, wind speed, and humidity control oven, a second air circulation supply unit is introduced, which has the function of real-time adjustment of the hot air direction inside the oven. Through the symmetrically arranged first circulating air component 30 and second circulating air component 31, hot air can be sent into the drying unit 80 in both forward and reverse directions, realizing uniform drying air supply for complex materials and avoiding the problem of uneven heating and drying.

[0059] Example 3

[0060] This embodiment is a modified embodiment of Embodiments 1 and 2.

[0061] like Figure 5 As shown, the constant temperature, wind speed and humidity control oven also includes a humidification unit 32. The humidification unit 32 can be one or more of an ultrasonic humidifier, an evaporative humidifier, and an electric heating humidifier. The humidification unit can set the test environment humidity according to the standard of the material to be tested.

[0062] By adding a humidification unit 32, the application scenarios of the oven can be expanded, and the oven originally used for drying film materials can be upgraded into a multi-functional experimental chamber, enabling the oven to maintain a specific temperature and humidity, and meet the testing requirements of materials under specific temperature and humidity conditions.

[0063] The technical effects of this embodiment are as follows:

[0064] This constant temperature, wind speed and humidity control oven incorporates a humidification unit to regulate the humidity inside the oven. Based on the humidifier and humidity sensor, the humidity inside the oven is maintained within a specific range. In addition, the oven has a temperature control function, which can adjust the specific temperature and humidity inside the oven, transforming the oven into a test chamber under specific temperature and humidity conditions for various test experiments.

[0065] Example 4

[0066] This embodiment is a modified embodiment of Embodiments 1 to 3.

[0067] like Figure 1 As shown, the constant temperature, wind speed and humidity control oven also includes a second temperature control unit, which includes an electric heating element 83. The electric heating element 83 is arranged parallel to the running direction of the material to be dried and is 5-10mm away from the material to be dried, so as to provide stable radiant heat to the material to be dried.

[0068] The technical effects of this embodiment are as follows:

[0069] By incorporating a second temperature control unit into this constant temperature, wind speed, and humidity control oven, which provides supplementary temperature regulation, it can assist in adjusting the oven temperature and accelerating drying efficiency, thereby increasing the oven's drying efficiency and improving the drying effect.

[0070] Example 5

[0071] This embodiment is a modified embodiment of Embodiments 1 to 4.

[0072] like Figure 5 As shown, the constant temperature, wind speed, and humidity control oven also includes a microwave-assisted drying unit 86. Located within the drying unit, the microwave-assisted drying unit 86 comprises a microwave magnetron component, a waveguide component, and a microwave field distribution component. This enables efficient drying of roll-to-roll film materials while preventing microwave leakage. At least one microwave magnetron component is installed at the top of the oven's back panel and the bottom of the front door. The waveguide component is connected to the microwave magnetron component, with its top tilted downwards at 30°–45° and its bottom tilted upwards at the same angle to meet cross-radiation requirements. The microwave field distribution component includes a stirring element, a reflecting element, and a shielding element, improving drying uniformity and efficiency while preventing microwave escaping.

[0073] The waveguide component contains a rectangular waveguide, adapted to a 2.45GHz frequency, with dimensions of 43.18mm x 86.36mm, suitable for high-efficiency transmission requirements of an oven with a depth of 33cm;

[0074] The stirring element is located at the top of the oven and is made of metal blades. Through periodic rotation, it can disturb the distribution of the microwave field, break the standing wave effect, avoid local energy accumulation in the oven, and improve the drying uniformity.

[0075] The reflective element is located on the inside of the back plate and has a sawtooth structure, which can enhance microwave scattering and extend the propagation path of microwaves in the cavity;

[0076] The shielding elements include a metallized transparent window, a microwave absorption structure, and choke grooves. The metallized transparent window uses ITO conductive coated glass, balancing microwave shielding and transparency. The coating surface resistance is ≤10Ω / sq, reflecting over 99% of microwave energy. The microwave absorption structure is located at the membrane material inlet and outlet, using a silicon carbide coated ceramic structure to suppress microwave leakage from the door gaps through a labyrinthine design. The choke grooves are located around the door frame, with a depth of 1 / 4 of the door frame thickness, forming a high-frequency short circuit to prevent microwave leakage from the door gaps. The waveguide components and microwave magnetron components within the microwave-assisted drying unit correspond one-to-one, providing continuous microwaves to the membrane material while simultaneously aided by a stirring element.

[0077] The technical effects of this embodiment are as follows:

[0078] This constant temperature, wind speed and humidity control oven incorporates a microwave-assisted drying unit, which can enhance the drying effect on rolled materials. Through optimized structural layout and innovative design, the oven not only has microwave drying function, but also effectively avoids microwave leakage.

[0079] 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. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A constant temperature, constant air flow, constant humidity oven, characterized in that, It comprises: a drying unit, which comprises material handling components, and can be used for drying roll materials or sheet materials; a first temperature control unit, which comprises temperature sensing components and heating components, and can adjust the temperature of fresh air and circulating air according to temperature values; a first air circulation supply unit, which comprises first circulating air components and fresh air control components, and the fresh air control components are surrounded by the heating components, and the first circulating air components are located behind the heating components and in front of the drying unit; a second air circulation supply unit, which comprises second circulating air components, and the second circulating air components are arranged parallel to the first circulating air components and can complete the forward and reverse supply of circulating air alternately with the first circulating air components, while the two sides of the first circulating air components and the second circulating air components are alternately heated at the same time, the temperature difference at the far end is reduced, and the overall heating is more uniform; a total control unit, which is connected with the above-mentioned units respectively, and is used for controlling the above-mentioned units respectively.

2. The constant temperature, constant air flow, constant humidity oven of claim 1, wherein, It also comprises: a humidity control unit, which comprises humidity sensing components and exhaust components, and the exhaust components are arranged on the upper part of the drying unit, and the exhaust amount can be adjusted according to the feedback value of the humidity sensing components in the drying unit; an air speed control unit, which comprises air speed sensing components, and the air speed sensing components can display the air speed value, and are used for guiding the adjustment of the circulating air speed.

3. The constant temperature, constant air flow, constant humidity oven of claim 2, wherein, It also comprises: a humidifying unit, which can be one or more of ultrasonic humidifiers, evaporative humidifiers and electric heating humidifiers, and the humidifying unit can set the test environment humidity according to the material to be detected.

4. The constant temperature, constant air flow, constant humidity oven of claim 3, wherein, It also comprises: a second temperature control unit, which comprises electric heating components, and the electric heating components are arranged parallel to the running direction of the material to be dried, and are 5-10 mm away from the material to be dried.

5. The constant temperature, constant air flow, constant humidity oven of claim 3, wherein, It also comprises: a microwave-assisted drying unit, which is located in the drying unit and comprises microwave magnetron components, waveguide tube components and microwave field distribution components; wherein the microwave magnetron components are arranged on the top of the back plate of the drying oven and the bottom of the front door respectively, and at least one is arranged; the waveguide tube components are connected with the microwave magnetron components, the top is inclined downward by 30°-45°, and the bottom is inclined upward by the same angle, which meets the cross-radiation requirement; the microwave field distribution components comprise stirring elements, reflecting elements and shielding elements.

6. The constant temperature control air speed control humidity oven according to claim 4 or 5, wherein: the air inlet of the fresh air control component passes through the heating component first, and the amount of fresh air entering can be adjusted according to the demand; the first circulating air components and the second circulating air components can introduce the mixed heated hot air and fresh air into the drying unit in the forward and reverse directions according to the feedback value of the air speed sensing components; the heating component is arranged outside the fresh air control component in a flat plate structure, which can maintain the circulating air temperature before entering the drying unit within the target range; the humidity control unit can feed back the detection value of the humidity sensing components to the total control unit, and control the exhaust components and the remaining linkage components to complete the adjustment of the humidity in the oven.

7. The constant temperature control air speed control humidity oven according to claim 6, wherein The new air control component is one or both of a fan or a valve, which can control the air volume; The heating component can be a PTC electric heater, and at least one piece is provided; The circulating air component is a centrifugal fan or a ducted fan, which can stably send the heated hot air into the drying unit; The exhaust component includes an electric control element or a manual control element, which can control the exhaust volume of the drying unit; The electric control element is located at the upper part of the oven, and the opening size or the exhaust volume of the exhaust component can be automatically adjusted according to the output data of the humidity sensing component to achieve the control of the exhaust volume; the manual control element is located at the upper part of the oven, and the exhaust volume can be manually controlled.

8. The constant-temperature, air-controlled and humidity-controlled oven according to claim 7, wherein The material handling component is located in the drying unit, which can store and transport the roll material or non-roll material; There is a partition plate with multiple exhaust holes between the drying unit and the first and second air circulation supply units, and the air circulation supply units work periodically and alternately.

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