Dehumidifying drying system and oven thereof
By combining a hot air circulating oven and an electromagnetic oven, and using an energy-saving drying device for heat recovery and utilization, the problems of low heat transfer efficiency and high energy consumption of existing ovens are solved, achieving efficient and energy-saving drying effects and microbial disinfection functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU JINCHUANG ECO-TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-07-21
AI Technical Summary
Existing drying ovens suffer from problems such as insufficient heat transfer efficiency of hot air during the drying process, high operating costs of electromagnetic drying ovens, and temperature fluctuations and unevenness caused by high humidity, which affect the quality of finished products.
Combining a hot air circulating oven and an electromagnetic oven, the oven uses low-temperature hot air drying followed by hot air circulation drying and then electromagnetic waves with matching electromagnetic resonance frequency for heating. This is combined with an energy-saving drying device for heat recovery and utilization.
It improves drying efficiency, shortens drying time, reduces energy consumption, achieves efficient heat recovery and microbial elimination, and ensures the quality of finished products.
Smart Images
Figure CN224534632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drying technology, and in particular to a dehumidification drying system and its drying oven. Background Technology
[0002] An oven is a device that uses heat to dry, sterilize, or heat-treat materials. Its core function is to meet the processing needs of different industries by controlling temperature and environmental conditions. Existing ovens include high-temperature ovens, constant-temperature ovens, hot air circulating ovens, nitrogen-filled ovens, and electromagnetic ovens. Among them, hot air circulating ovens rely on flowing air to transfer heat to achieve the drying purpose, but the heat transfer efficiency of hot air is insufficient, resulting in inconsistent drying efficiency of workpieces. Electromagnetic ovens, on the other hand, act directly on the workpiece through the eddy current effect, resulting in high energy conversion efficiency. However, electromagnetic ovens have high operating costs and are prone to large temperature fluctuations and uneven heating of workpieces with high humidity, thus affecting the quality of the finished product. Utility Model Content
[0003] The purpose of this invention is to provide a dehumidification and drying system and its oven, which improves the drying efficiency of workpieces by combining a hot air circulating oven and an electromagnetic oven.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] As a first aspect, this utility model relates to an oven, which includes a hot air circulating oven and an electromagnetic oven that are interconnected.
[0006] The hot air circulating oven is provided with an oven air inlet and an oven air outlet. The oven air inlet is used to introduce heated low-temperature fresh air, and the oven air outlet is used to discharge hot and humid air.
[0007] The electromagnetic oven is equipped with an electromagnetic generator, which is used to emit a specific frequency that matches the resonance frequency of water molecules toward the workpiece entering the electromagnetic oven.
[0008] Further configuration: Both the hot air circulating oven and the electromagnetic oven are equipped with a feed inlet and a discharge outlet, and the discharge outlet of the hot air circulating oven is connected to the feed inlet of the electromagnetic oven.
[0009] Further configuration: The electromagnetic drying oven is equipped with wave traps at the inlet and outlet.
[0010] Further configuration: The side walls of the electromagnetic oven are coated with magnetic wave-absorbing powder.
[0011] Further configuration: The electromagnetic oven is equipped with a power supply for powering the electromagnetic generator.
[0012] Further configuration: The electromagnetic oven is equipped with a heat dissipation vent at the electromagnetic generator and power supply, the heat dissipation vent is equipped with a cooling fan, and the heat dissipation vent is connected to the air outlet of the oven.
[0013] Further configuration: The electromagnetic oven is equipped with a moisture-dissipating air inlet and a moisture-dissipating air outlet. The moisture-dissipating air inlet allows flowing air to be introduced so that the water vapor inside the electromagnetic oven that has absorbed electromagnetic wave energy is discharged to the outside of the electromagnetic oven through the moisture-dissipating air outlet.
[0014] Further configuration: The oven includes an oven made of stainless steel.
[0015] As a second aspect, this utility model relates to a dehumidification and drying system, which includes an oven and an energy-saving drying device as described above, wherein the energy-saving drying device is connected to the hot air circulating oven.
[0016] Further configuration: The energy-saving drying device includes a casing and an air inlet, an air outlet, a return air outlet and an exhaust air outlet located inside the casing. The air outlet is connected to the air inlet of the hot air circulating oven, and the return air outlet is connected to the air outlet of the hot air circulating oven.
[0017] Compared with the prior art, the solution of this utility model has the following advantages:
[0018] 1. In the oven involved in this utility model, the workpiece is dried by low-temperature hot air conduction in the hot air circulation oven, and then further dried by electromagnetic drying. The step-by-step drying process can improve the drying efficiency of the workpiece and shorten the drying time. Moreover, the high penetration of electromagnetic drying can quickly evaporate the moisture inside the workpiece, reducing the energy waste of traditional single temperature mode.
[0019] 2. In the oven involved in this utility model, when the electromagnetic oven is running, the heat generated by its electromagnetic generator and power supply can be sent into the energy-saving drying device through the air duct. The heat generated by the electromagnetic oven can be recovered and reused, reducing the additional heating requirement for fresh air in the energy-saving drying device.
[0020] 3. In the oven involved in this utility model, when the electromagnetic generator in the electromagnetic oven emits electromagnetic waves, the electromagnetic waves will directly destroy the microbial cell structure. Under the high temperature environment of the oven, 99% of the mold and bacteria produced by water on the workpiece can be inactivated, and it has the function of eliminating mold and bacteria.
[0021] 4. In the dehumidification and drying system involved in this utility model, when the hot air circulating oven is running, the heat carried by the hot and humid air can be recovered and reused by the energy-saving drying device before it is discharged into the atmosphere, thereby reducing heat emission loss and achieving the purpose of energy saving and emission reduction.
[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description
[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0024] Figure 1 This is a schematic diagram of the energy-saving drying device in the dehumidification and drying system of this utility model;
[0025] Figure 2 This is a schematic diagram of the internal structure of the energy-saving drying device in the dehumidification and drying system of this utility model;
[0026] Figure 3 This is a schematic diagram of the air supply and return air inlets used to illustrate the energy-saving drying device in the dehumidification and drying system of this utility model.
[0027] Figure 4 This is a schematic diagram of the gas flow direction of the energy-saving drying device in the dehumidification and drying system of this utility model;
[0028] Figure 5 This is a schematic diagram of the drying oven in the dehumidification and drying system of this utility model;
[0029] Figure 6 This is a schematic diagram showing the connection between the hot air circulating oven and the electromagnetic oven in the dehumidification and drying system of this utility model.
[0030] In the diagram, 1. Hot air circulating oven; 11. Oven air inlet; 12. Oven air outlet; 2. Electromagnetic oven; 21. Electromagnetic generator; 22. Heat dissipation vent; 3. Energy-saving drying device; 31. Chassis; 311. Fresh air inlet; 312. Air supply outlet; 313. Return air inlet; 314. Exhaust outlet; 3141. Fan; 32. Heat exchanger; 331. Dehumidifying evaporator; 332. Dehumidifying condenser; 333. Dehumidifying compressor; 341. Heating evaporator; 342. Heating condenser; 343. Heating compressor; 35. Refrigerant circulation channel; 36. Condensate drain pipe; 37. Base; 38. Electrical control box. Detailed Implementation
[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0032] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in this specification means the presence of the described features, parts, and / or components, but does not exclude implementation as other features, parts, components, and / or combinations thereof supported by this art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."
[0033] In the description of this utility model, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0034] The terms "first" and "second" are used 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 as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0035] 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 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.
[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0037] This utility model relates to a dehumidification and drying system. Please refer to [link / reference]. Figures 1 to 6 The oven includes an electromagnetic oven 2 and a hot air circulating oven 1. The electromagnetic oven 2 and the hot air circulating oven 1 are interconnected. The workpiece to be dried passes through the hot air circulating oven 1 and the electromagnetic oven 2 in sequence. Low-temperature hot air and electromagnetic induction are used to achieve dehumidification and drying of the workpiece from the inside out, thereby improving the drying efficiency of the workpiece.
[0038] It should be noted that the workpiece to be dried in this embodiment is a coated workpiece, specifically including fiber fabrics or polymer films, etc. Drying is used to remove organic solvents such as NMP and DMF contained in the coating slurry, ensuring the safety of subsequent processes.
[0039] Specifically, both the electromagnetic oven 2 and the hot air circulating oven 1 of this utility model are provided with a feed inlet (not shown in the figure) and a discharge outlet (not shown in the figure). The discharge outlet of the hot air circulating oven 1 is connected to the feed inlet. The feed inlet of the hot air circulating oven 1 to the discharge outlet of the electromagnetic oven 2 forms a conveying channel for the workpiece to be dried, so that the workpiece passes through the hot air circulating oven 1 and the electromagnetic oven 2 in sequence for drying.
[0040] Please combine Figure 5 and Figure 6 The hot air circulating oven 1 is equipped with an oven air inlet 11 and an oven air outlet 12. The dehumidification and drying system also includes an energy-saving drying device 3 connected to the hot air circulating oven 1. Heated low-temperature fresh air is introduced into the hot air circulating oven 1 through the energy-saving drying device 3. The heated low-temperature fresh air comes into contact with the surface of the workpiece and transfers heat to the workpiece, causing the moisture in the workpiece to absorb heat and evaporate. Then, the hot and humid air carrying a large amount of water vapor is discharged into the energy-saving drying device 3 through the oven air outlet 12 for heat recovery and dehumidification, and then discharged into the atmosphere.
[0041] Please combine Figures 1 to 4 The energy-saving drying device 3 of this utility model includes a casing 31 and a fresh air inlet 311, a supply air inlet 312, a return air inlet 313, and an exhaust air inlet 314 disposed on the casing 31. The supply air inlet 312 is connected to the oven air inlet 11 of the hot air circulating oven 1, and the return air inlet 313 is connected to the oven air outlet 12 of the hot air circulating oven 1, so that a fresh air channel is formed between the fresh air inlet 311 and the supply air inlet 312, and an exhaust air channel is formed between the return air inlet 313 and the exhaust air inlet 314. A fan 3141 is provided at the exhaust air inlet 314 to drive the formation of a negative pressure environment, providing power for the discharge of hot and humid exhaust air. The casing 31 is provided with a heat exchange component for exchanging heat between the exhaust air and the fresh air of the hot air circulating oven 1. The heat exchange component is disposed on the fresh air channel and the exhaust air channel to facilitate the heat exchange between the fresh air and the exhaust air.
[0042] The heat exchange components include heat exchangers 32 installed in the fresh air duct and the exhaust air duct. Specifically, plate heat exchangers or heat pipe heat exchangers can be used. In this embodiment, a plate heat exchanger is preferred. The plate heat exchanger uses stacked stainless steel corrugated plates. The air in the fresh air duct and the exhaust air duct flows in opposite directions to exchange heat, thereby recovering and reusing the heat in the exhaust air, reducing heat emission loss, and achieving the purpose of energy saving and emission reduction.
[0043] In addition, the heat exchange assembly also includes a dehumidifying evaporator 331 located in the fresh air duct between the fresh air inlet 311 and the heat exchanger 32, and a dehumidifying condenser 332 located between the air outlet 312 and the heat exchanger 32. A dehumidifying compressor 333 is located between the dehumidifying evaporator 331 and the dehumidifying condenser 332. A refrigerant circulation passage 35 is also provided between the dehumidifying evaporator 331, the dehumidifying condenser 332 and the dehumidifying compressor 333. Therefore, when fresh air enters the casing 31 from the fresh air inlet 311, it first passes through the dehumidifying evaporator 331 for cooling and dehumidification. The refrigerant in the dehumidifying evaporator 331 absorbs heat from the fresh air to cool and dehumidify it. The refrigerant then enters the dehumidifying compressor 333, which further compresses it into a high-temperature, high-pressure gaseous state. The gaseous refrigerant is then sent to the dehumidifying condenser 332, where it releases heat. This further heats the fresh air that has undergone heat exchange in the heat exchanger 32. After releasing heat, the refrigerant becomes liquid and returns to the dehumidifying evaporator 331. By circulating the refrigerant through the dehumidifying evaporator 331, dehumidifying compressor 333, and dehumidifying condenser 332, the heat recovered by the refrigerant can be reused, improving heat utilization efficiency and reducing heat loss.
[0044] Furthermore, the exhaust air that has undergone heat exchange in heat exchanger 32 can be further dehumidified and heat recovered. A heated evaporator 341 is located between the exhaust outlet 314 and the heat exchanger 32, and a heated condenser 342 is located between the air outlet 312 and the heat exchanger 32. A heated compressor 343 is located between the heated evaporator 341 and the heated condenser 342. Similarly, the heated evaporator 341, the heated condenser 342, and the heated compressor 343 are also equipped with a refrigerant circulation channel 35. Therefore, the exhaust air after heat exchange... After the evaporator 341 releases heat and dehumidifies, the humidity of the exhaust air is reduced. At the same time, the refrigerant in the evaporator 341 absorbs heat and enters the compressor 343, where it is compressed into a high-temperature and high-pressure gaseous state. The condenser 342 is connected to the fresh air duct to further recover the heat from the exhaust air and reheat the fresh air. The refrigerant released heat at the condenser 342 turns back into liquid and flows back into the evaporator 341. This cycle is repeated to recover and reuse the heat from the exhaust air, thereby improving the recovery and utilization rate of the exhaust air.
[0045] Heated fresh air enters the hot air circulating oven 1 to dry the coated workpiece. The hot, humid air carries a large amount of moisture, which is released and condensed into water after passing through the heat exchanger 32 and the heating evaporator 341. Therefore, in this embodiment, a condensate collection tray is connected to the exhaust duct at the heating evaporator 341. The condensate collection tray is connected to a condensate drain pipe 36 extending outside the casing 31. The collection tray collects condensate droplets, preventing direct dripping into the casing 31 and causing corrosion or short circuits. The condensate drain pipe 36 directs the collected condensate from the collection tray to the outside of the casing 31, ensuring stable equipment operation and environmental safety.
[0046] The coated workpieces, after passing through the hot air circulating oven 1, are then conveyed into the electromagnetic oven 2. The electromagnetic oven 2 utilizes microwave resonance heating technology based on electromagnetic induction to heat and dry the workpieces. Please refer to... Figure 6 The electromagnetic drying oven 2 of this invention is equipped with an electromagnetic generator 21 and a power supply for the electromagnetic generator 21. As the core component of the electromagnetic drying oven 2, the electromagnetic generator 21 converts electrical energy into electromagnetic waves of a specific frequency. When the coated workpiece enters the electromagnetic drying oven 2, the electromagnetic generator 21 emits a specific frequency that matches the resonance frequency of water molecules towards the workpiece. That is, when the frequency of the electromagnetic wave matches the natural resonance frequency of the vibration and rotation of water molecules, microwaves can couple with the movement of water molecules to produce a resonance phenomenon, thereby generating heat energy and achieving rapid drying of the coated workpiece. Because electromagnetic waves have strong penetrating power, they can penetrate deep into the interior of the coated workpiece, rather than being limited to heating the surface, thus achieving drying of the workpiece from the inside out.
[0047] Meanwhile, wave traps (not shown in the figure) are also installed at the inlet and outlet of the electromagnetic oven 2, and magnetic wave-absorbing powder is sprayed on the side walls of the electromagnetic oven 2 where the inlet and outlet are located. The wave traps can prevent electromagnetic waves from leaking into the external environment, avoiding electromagnetic radiation to the operators. The magnetic wave-absorbing powder sprayed on the side walls of the electromagnetic oven 2 can absorb electromagnetic waves reflected or scattered inside the electromagnetic oven 2 and convert them into heat energy, avoiding uneven heating caused by energy not being reflected inside the oven. This utility model uses wave traps and magnetic wave-absorbing powder to form an "active shielding + passive absorption" protection system: the wave traps intercept the main leakage path, and the magnetic wave-absorbing powder treats residual radiation, so that the microwave leakage is controlled below the safety standard (e.g., ≤5mW / cm2).
[0048] In addition, the electromagnetic drying oven 2 is equipped with a heat dissipation vent 22 at the location of the electromagnetic generator 21 and the power supply. The heat dissipation vent 22 is connected to the return air vent 313 of the energy-saving drying device 3. The electromagnetic generator 21 and the power supply also generate heat during operation. This heat is then discharged into the energy-saving drying device 3 to further recover the heat.
[0049] The oven in this embodiment is preferably made of 304 stainless steel. 304 stainless steel remains stable in the range of -196℃ to 800℃, which is suitable for long-term high-temperature operation of the oven (such as 60-80℃ in the electromagnetic drying section), and avoids deformation or oxidation of the oven under long-term high-temperature environment.
[0050] Therefore, when using the dehumidification and drying system of this utility model to dry the coated workpiece, the coated workpiece is fed into the hot air circulating oven 1 through the feed port of the hot air circulating oven 1. Heated fresh air enters the hot air circulating oven 1 through the oven air inlet 11 from the dehumidification and drying device and circulates. The hot air will wrap around the surface of the workpiece to form a temperature difference. The moisture of the coated workpiece absorbs heat and evaporates. The evaporated water vapor is discharged from the hot air circulating oven 1 through the oven air outlet 12 with the flow of hot air.
[0051] The hot and humid air discharged from the oven outlet 12 enters the casing 31 of the dehumidification and drying device through the return air inlet 313. The exhaust air forms a counter-current contact with the fresh air at the heat exchanger 32 to exchange heat, recovering and reusing the heat in the exhaust air. After heat exchange, the exhaust air then enters the heating evaporator 341 to further absorb heat for condensation and dehumidification, ensuring the dryness of the exhaust air discharged into the atmosphere. The condensate can be discharged to the outside of the casing 31 through the condensate drip tray and condensate drain pipe 36.
[0052] Fresh air enters the casing 31 through the fresh air inlet 311 of the dehumidifying and drying device. It is first dehumidified by condensation at the dehumidifying evaporator 331 to ensure the dryness of the fresh air entering the hot air circulating oven 1. The dehumidified fresh air enters the heat exchanger 32 to exchange heat with the exhaust air, so as to recover and reuse the heat in the exhaust air. After being heated by the heat exchanger 32, the fresh air is then heated again by the dehumidifying condenser 332 and the heating condenser 342. The heat of the dehumidifying condenser 332 comes from the heat absorbed by the dehumidifying evaporator 331 from the fresh air, and the heat of the heating condenser 342 comes from the heat absorbed by the heating evaporator 341 from the exhaust air. This realizes heat recovery and reuse, reducing the heating cost of fresh air.
[0053] After the coated workpiece is dried in the hot air circulating oven 1, most of the moisture can be removed. Then it enters the electromagnetic oven 2. The electromagnetic oven 2 uses an electromagnetic generator 21 to emit electromagnetic waves that resonate with water molecules towards the coated workpiece, so as to convert electrical energy into heat energy, so that the coated workpiece can be dried from the inside to the outside.
[0054] In addition, a filter screen is installed at the fresh air inlet 311 of the energy-saving drying device 3. The filter screen can effectively intercept large particulate pollutants from entering the interior of the energy-saving drying device 3, avoiding blockage of the internal equipment of the drying device and resulting in a decrease in heat transfer efficiency. It also reduces the wear of impurities on the internal equipment of the energy-saving drying device 3, thereby extending the service life of the brush. Furthermore, it can prevent impurities from entering the hot air circulating oven 1 and causing contamination to the coated workpiece to be dried.
[0055] The energy-saving drying device 3 has an electrical control box 38 inside its casing 31. The electrical control box 38 can realize the automatic control of the heat exchange components. The electrical control box 38 is installed on the bottom side wall of the casing 31 and is isolated from the heat exchange components and other core components to avoid the high temperature and high humidity environment from affecting the life of electronic components.
[0056] The bottom of the casing 31 of the energy-saving drying device 3 is also provided with a base 37. The base 37 is used to support the casing 31 on the ground and keep the bottom surface of the casing 31 away from the ground. The base 37 bears and transmits the weight and external load of the energy-saving drying device 3 of this utility model, ensuring the stability and safety of the oven heat exchange auxiliary device. At the same time, a forklift opening is formed between adjacent bases 37. The design of the forklift opening allows forklifts to easily enter under the casing 31 to lift the casing 31, thereby improving the efficiency of loading, unloading and handling.
[0057] In summary, the dehumidification and drying system of this utility model uses low-temperature hot air conduction drying in the hot air circulating oven 1, and then uses electromagnetic drying to further dry the workpiece. The step-by-step drying process can improve the drying efficiency of the workpiece and shorten the drying time. Furthermore, the high penetration of electromagnetic drying can quickly evaporate the moisture inside the workpiece, reducing the energy waste of traditional single-temperature mode.
[0058] When the hot air circulating oven 1 is running, the heat carried by the hot and humid air can be recovered and reused by the energy-saving drying device 3 before it is discharged into the atmosphere, thereby reducing heat loss and achieving the goal of energy conservation and emission reduction.
[0059] When the electromagnetic oven 2 is running, the heat generated by its electromagnetic generator 21 and power supply can be sent into the energy-saving drying device 3 through the air duct. The heat generated by the electromagnetic oven 2 can be recovered and reused, reducing the additional heating requirement for fresh air in the energy-saving drying device 3.
[0060] When the electromagnetic generator 21 inside the electromagnetic oven 2 emits electromagnetic waves, the electromagnetic waves directly destroy the structure of microbial cells. Under the high temperature environment of the oven, it can inactivate 99% of the mold and bacteria produced by water on the workpiece, and has the function of eliminating mold and bacteria.
[0061] The above description is only a partial embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. An oven, characterized in that, It includes a hot air circulating oven (1) and an electromagnetic oven (2) that are interconnected; The hot air circulating oven (1) is provided with an oven air inlet (11) and an oven air outlet (12). The oven air inlet (11) is used to introduce heated low-temperature fresh air, and the oven air outlet (12) is used to discharge hot and humid air. The electromagnetic oven (2) is equipped with an electromagnetic generator (21), which is used to emit a specific frequency that matches the resonance frequency of water molecules toward the workpiece entering the electromagnetic oven (2).
2. The drying oven according to claim 1, characterized in that, Both the hot air circulating oven (1) and the electromagnetic oven (2) are provided with a feed inlet and a discharge outlet, and the discharge outlet of the hot air circulating oven (1) is connected to the feed inlet of the electromagnetic oven (2).
3. The drying oven according to claim 2, characterized in that, The electromagnetic oven (2) is equipped with wave traps at the inlet and outlet.
4. The drying oven according to claim 2, characterized in that, The side wall of the electromagnetic oven (2) is coated with magnetic wave powder.
5. The drying oven according to claim 1, characterized in that, The electromagnetic oven (2) is equipped with a power supply for supplying power to the electromagnetic generator (21).
6. The drying oven according to claim 5, characterized in that, The electromagnetic oven (2) has a heat dissipation vent (22) located at the electromagnetic generator (21) and power supply. The heat dissipation vent (22) is equipped with a cooling fan and is connected to the oven air outlet (12).
7. The drying oven according to claim 1, characterized in that, The electromagnetic oven (2) is provided with a moisture inlet and a moisture outlet. The moisture inlet allows flowing air to pass through so that the water vapor inside the electromagnetic oven (2) that has absorbed electromagnetic wave energy is discharged to the outside of the electromagnetic oven (2) through the moisture outlet.
8. The drying oven according to claim 1, characterized in that, The oven includes an oven made of stainless steel.
9. A dehumidification and drying system, characterized in that, Includes the oven and energy-saving drying device (3) as described in any one of claims 1-8, wherein the energy-saving drying device (3) is connected to the hot air circulating oven (1).
10. The dehumidification and drying system according to claim 9, characterized in that, The energy-saving drying device (3) includes a casing (31) and an air inlet, an air outlet (312), a return air outlet (313) and an exhaust air outlet (314) provided in the casing (31). The air outlet (312) is connected to the oven air inlet (11) of the hot air circulating oven (1), and the return air outlet (313) is connected to the oven air outlet (12) of the hot air circulating oven (1).