A drying furnace

Abstract

The utility model discloses a kind of drying furnaces, including furnace body, the furnace body upper end is provided with air inlet passage, the furnace body lower end is provided with air outlet passage, the furnace body one side is provided with mounting cavity, fan assembly and heating component that the wind introduced is heated are provided in the mounting cavity, vortex tube assembly is provided below the fan assembly, the vortex tube assembly includes vortex tube, the vortex tube first end is compressed gas inlet, the vortex tube second end is cold gas outlet, the vortex tube third end is hot gas outlet, the vortex tube second end is provided with cold gas discharge pipe, the outlet of the cold gas discharge pipe is set in the outside of furnace body, the vortex tube third end is provided with hot gas discharge pipe, the cold gas discharge pipe is set at air outlet passage, the outlet of the hot gas discharge pipe is towards fan assembly setting, in the structure, effective circulation and dehumidification of gas in drying furnace are realized by the setting of vortex tube, improve drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of drying ovens, and in particular to a drying oven. Background Technology

[0002] A drying oven is a commonly used piece of equipment in industrial production and laboratories. Its main function is to remove moisture or solvents from materials through heating, thereby achieving the purpose of drying. Traditional drying ovens have some problems in their design and use. For example, during drying, moisture or solvents in the product remain in the drying oven, resulting in excessively high relative humidity or solvent ratio, which in turn affects the drying efficiency of the product. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a drying oven that improves product drying efficiency and saves energy.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a drying oven, including an oven body, an air inlet channel at the upper end of the oven body, an air outlet channel at the lower end of the oven body, an installation cavity on one side of the oven body, a fan assembly and a heating assembly for heating the introduced air are arranged in the installation cavity, a vortex tube assembly is arranged below the fan assembly, the vortex tube assembly includes a vortex tube, a first end of the vortex tube is a compressed gas inlet, a second end of the vortex tube is a cold gas outlet, a third end of the vortex tube is a hot gas outlet, a cold gas exhaust pipe is arranged at the second end of the vortex tube, the outlet of the cold gas exhaust pipe is located outside the oven body, a hot gas exhaust pipe is arranged at the third end of the vortex tube, the cold gas exhaust pipe is located at the air outlet channel, and the outlet of the hot gas exhaust pipe faces the fan assembly.

[0005] Furthermore, the fan assembly includes a wind turbine and a motor that drives the wind turbine to rotate. The wind turbine includes an air inlet and an air outlet. The air inlet is located on one side of the hot air exhaust pipe, and the air outlet is located on one side of the air inlet channel.

[0006] Furthermore, the heating component is located at the air inlet or air outlet of the impeller.

[0007] Furthermore, the installation cavity is provided with a condensation chamber, the cold air exhaust pipe is provided in the condensation chamber, the condensation chamber is provided with a condensation chamber inlet and a condensation chamber outlet, and a gas pipe is provided between the condensation chamber inlet and the air outlet channel;

[0008] The bottom is provided with a drain outlet, and a solvent recovery bottle is provided at the drain outlet.

[0009] Furthermore, the drain outlet is provided with threads, and the solvent recovery bottle is threadedly connected to the drain outlet.

[0010] Furthermore, the air vent pipe is a spiral pipe.

[0011] Furthermore, the surface of the spiral pipe and the inner surface of the condensation chamber are coated with Teflon.

[0012] The beneficial effects of this utility model are:

[0013] 1. This structure utilizes vortex tubes to achieve effective circulation and dehumidification of the gas inside the drying furnace, thereby improving drying efficiency. The vortex tubes divide the introduced compressed air into two parts: cold air and hot air. The cold air is discharged to the outside of the furnace through the cold air exhaust pipe, simultaneously carrying away the water vapor evaporated inside the furnace and reducing the humidity of the gas inside the furnace. The hot air, on the other hand, is discharged to the fan assembly through the hot air exhaust pipe, where it mixes with the gas heated by the heating components and then flows back into the furnace, increasing the temperature inside the furnace and accelerating the drying process of the material.

[0014] 2. The dehumidification effect is further improved by the inclusion of a condensation chamber in this structure. The cold air exhaust pipe within the condensation chamber ensures that the cold air discharged from the vortex tubes fully contacts the humid gas exiting the furnace. The spiral or finned pipe design increases the contact area between the cold and humid gas, thereby improving condensation efficiency. The condensed liquid drips down the cold air exhaust pipe and flows through the drain port into the solvent recovery bottle. This not only achieves effective collection of the condensate but also prevents the condensate from polluting the internal environment of the drying furnace, maintaining the cleanliness and efficient operation of the drying furnace.

[0015] 3. The hot gas exhaust pipe allows for the reheating of cooled gas, and since heating cold air via the hot gas exhaust pipe requires no additional electricity, the entire drying process is more energy-efficient and environmentally friendly. Furthermore, this drying oven and its drying method are simple to operate and easy to maintain, and have broad application prospects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a drying oven according to the first embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the drying oven of the second structure according to an embodiment of this application.

[0018] Figure 3 This is a side view of a drying oven with a second structure according to an embodiment of this application.

[0019] The components in the diagram are labeled as follows: Furnace body 1, mounting cavity 2, impeller 3, motor 4, heating component 5, vortex tube 6, compressed gas inlet 7, cold gas exhaust pipe 8, hot gas exhaust pipe 9, condensing chamber 10, condensing chamber inlet 11, condensing chamber outlet 12, solvent recovery bottle 13, Teflon coating 14. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, an embodiment of this application discloses a drying oven, including an oven body 1. The upper end of the oven body 1 is provided with an air inlet channel, and the lower end of the oven body 1 is provided with an air outlet channel. An installation cavity 2 is provided on one side of the oven body 1. A fan assembly and a heating assembly 5 for heating the introduced air are provided in the installation cavity 2. A vortex tube 6 assembly is provided below the fan assembly. The vortex tube 6 assembly includes a vortex tube 6. The first end of the vortex tube 6 is a compressed gas inlet 7, the second end of the vortex tube 6 is a cold gas outlet, and the third end of the vortex tube 6 is a hot gas outlet. A cold gas exhaust pipe 8 is provided at the second end of the vortex tube 6. The outlet of the cold gas exhaust pipe 8 is located outside the oven body 1. A hot gas exhaust pipe 9 is provided at the third end of the vortex tube 6. The cold gas exhaust pipe 8 is located at the air outlet channel, and the outlet of the hot gas exhaust pipe 9 is oriented towards the fan assembly.

[0022] In actual operation, the drying oven is started, the product is placed in the oven body 1, compressed air is introduced into the first end of the vortex tube 6, cold air is discharged from the second end of the vortex tube 6 to the cold air discharge pipe 8, and hot air is discharged from the third end of the vortex tube 6 to the hot air discharge pipe 9. The hot air is discharged to the fan assembly through the hot air discharge pipe 9 and then flows back into the oven body 1 through the fan assembly and the heating assembly 5. At the same time, the gas in the oven body 1 is discharged from the air outlet channel and comes into contact with the cold air discharge pipe 8. The liquid condenses in the cold air discharge pipe 8, and the dried gas is heated by contact with the hot air discharge pipe 9 and then flows back into the oven body 1 through the fan assembly and the heating assembly 5.

[0023] The aforementioned structural design not only optimizes the gas circulation process within the drying oven but also significantly improves drying efficiency. During operation, the vortex tube 6 plays a crucial role, cleverly splitting the input compressed air in two: one part is discharged as cold air to remove moisture from the oven, while the other part is recycled as hot air to heat and maintain the oven temperature. This design not only simplifies the drying process but also reduces energy consumption, achieving the dual goals of high efficiency and environmental protection.

[0024] In this embodiment, the fan assembly includes a fan wheel 3 and a motor 4 that drives the fan wheel 3 to rotate. The fan wheel 3 includes an air inlet and an air outlet. The air inlet is located on one side of the hot air exhaust pipe 9, and the air outlet is located on one side of the air inlet channel.

[0025] In actual operation, the motor 4 drives the impeller 3 to rotate. During the rotation of the impeller 3, the gas flowing back from the furnace body 1 and the gas discharged from the hot gas exhaust pipe 9 are heated by the heating component 5 and then flow back into the furnace body 1. At the same time, by adjusting the speed of the impeller 3 and the temperature of the heating component 5, the temperature and gas flow rate inside the furnace body 1 can be precisely controlled, thereby further improving the drying efficiency and product quality.

[0026] In this embodiment, the heating component 5 is disposed at the air inlet or air outlet of the impeller 3.

[0027] It should be explained that the heating component 5 can be a resistance heating element, such as a heating wire or heating film, which generates heat through electric current to heat the passing gas. Alternatively, the heating component 5 can employ a heat pump system, which absorbs heat from the environment and transfers it to the gas inside the furnace 1 through heat pump circulation, achieving efficient energy utilization. Different selections of the heating component 5 allow for flexible configuration based on specific application scenarios and needs, to meet varying drying requirements and efficiency demands.

[0028] Specifically, the position of the heating component 5 is flexibly designed and can be adjusted according to actual needs. When the heating component 5 is placed at the air inlet of the impeller 3, it ensures that the gas entering the furnace body 1 is preheated before entering the impeller 3, thereby improving the overall heating efficiency. When the heating component 5 is placed at the air outlet of the impeller 3, it can perform secondary heating on the gas that has already been pressurized by the impeller 3, further enhancing the temperature uniformity and stability within the furnace body 1. This design allows the drying oven to adapt to the needs of different materials and different drying conditions, improving the versatility and practicality of the equipment.

[0029] In this embodiment, a condensing chamber 10 is provided inside the mounting cavity 2, and a cold air exhaust pipe 8 is provided inside the condensing chamber 10. A condensing chamber inlet 11 and a condensing chamber outlet 12 are provided in the condensing chamber 10, and a gas pipe is provided between the condensing chamber inlet 11 and the air outlet channel.

[0030] The bottom is provided with a drain outlet, and a solvent recovery bottle 13 is provided at the drain outlet.

[0031] Specifically, when this drying oven is used for drying products such as circuit boards, solvents will evaporate from the gas inside the oven body 1.

[0032] These solvents flow with the gas to the air outlet channel and enter the condensing chamber 10 through the gas pipe. Inside the condensing chamber 10, due to the presence of the cold gas exhaust pipe 8, the solvent-containing gas discharged from the furnace body 1 comes into full contact with the cold gas exhaust pipe 8, and the solvent in the gas condenses on the surface of the cold gas exhaust pipe 8. The condensed solvent drips down the cold gas exhaust pipe 8 to the bottom of the condensing chamber 10 and finally flows into the solvent recovery bottle 13 through the drain port.

[0033] The solvent recovery bottle 13 in this structure not only facilitates the collection and processing of solvents but also effectively avoids solvent pollution to the environment, reflecting the environmental protection concept of this utility model. In addition, the design of the condensation chamber 10 optimizes the gas flow path within the furnace body 1, allowing the gas to undergo sufficient condensation before exiting the furnace body 1, further improving the dehumidification efficiency and drying effect of the drying furnace.

[0034] In this embodiment, the drain outlet is provided with threads, and the solvent recovery bottle 13 is threadedly connected to the drain outlet.

[0035] Specifically, this threaded connection design not only facilitates the installation and disassembly of the solvent recovery bottle 13, but also helps ensure the seal between the drain port and the solvent recovery bottle 13, preventing leakage of condensed solvent during discharge, thereby ensuring the cleanliness and efficiency of the entire drying process. Furthermore, the threaded connection structure is simple and reliable, easy to maintain and replace, reducing equipment operating costs and maintenance difficulty.

[0036] In this embodiment, the cold air exhaust pipe 8 is a spiral pipe or a finned pipe.

[0037] Specifically, the spiral pipe design not only increases the length of the cold air exhaust pipe 8, allowing for more thorough heat exchange between the cold air and the humid gas discharged from the furnace 1 during the exhaust process, thus improving condensation efficiency; at the same time, the shape of the spiral pipe also facilitates the smooth dripping of the condensed liquid along the inner wall of the pipe to the bottom of the condensation chamber 10, preventing liquid accumulation or blockage within the pipe. This design not only optimizes the condensation process but also improves the stability and reliability of the drying furnace.

[0038] In this embodiment, the inner surface of the spiral pipe and the condensation chamber is provided with a Teflon coating 14.

[0039] Specifically, due to the viscosity of the solvent, it may adhere to the outer wall of the cold air exhaust pipe 8 during the condensation process. The Teflon coating 14, with its excellent anti-adhesion and corrosion resistance, effectively prevents the solvent from adhering to the surface of the spiral pipe, thus ensuring the smooth progress of the condensation process. Furthermore, the Teflon coating 14 also possesses good wear resistance and high-temperature resistance, extending the service life of the cold air exhaust pipe 8 and improving the overall stability and reliability of the drying oven.

[0040] In implementing this invention, the vortex tube 6, as a core component, plays a crucial role in the overall drying efficiency due to its stable operation. The vortex tube 6 achieves efficient utilization of both cold and hot air by precisely dividing the compressed air. The cold air is used to reduce the humidity of the gas inside the furnace 1, while the hot air is further heated by the heating component 5 and then flows back into the furnace 1, maintaining a high-temperature environment inside the furnace and accelerating the drying speed of the material. This design not only improves drying efficiency but also significantly reduces energy consumption, making the entire drying process more economical and environmentally friendly.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drying oven, characterized in that: The furnace includes a furnace body (1), an air inlet channel at the upper end of the furnace body (1), an air outlet channel at the lower end of the furnace body (1), an installation cavity (2) on one side of the furnace body (1), a fan assembly and a heating assembly (5) for heating the introduced air are provided in the installation cavity (2), a vortex tube (6) assembly is provided below the fan assembly, the vortex tube (6) assembly includes a vortex tube (6), the first end of the vortex tube (6) is a compressed gas inlet (7), the second end of the vortex tube (6) is a cold gas outlet, the third end of the vortex tube (6) is a hot gas outlet, the second end of the vortex tube (6) is provided with a cold gas exhaust pipe (8), the outlet of the cold gas exhaust pipe (8) is located outside the furnace body (1), the third end of the vortex tube (6) is provided with a hot gas exhaust pipe (9), the cold gas exhaust pipe (8) is located at the air outlet channel, and the outlet of the hot gas exhaust pipe (9) is located towards the fan assembly.

2. The drying oven as described in claim 1, characterized in that: The fan assembly includes a fan wheel (3) and a motor (4) that drives the fan wheel (3) to rotate. The fan wheel (3) includes an air inlet and an air outlet. The air inlet is located on one side of the hot air exhaust pipe (9), and the air outlet is located on one side of the air inlet channel.

3. The drying oven as described in claim 2, characterized in that: The heating component (5) is located at the air inlet or air outlet of the impeller (3).

4. The drying oven as described in claim 2, characterized in that: The mounting cavity (2) is provided with a condensing cavity (10), the cold air exhaust pipe (8) is provided in the condensing cavity (10), the condensing cavity (10) is provided with a condensing cavity inlet (11) and a condensing cavity outlet (12), and a gas pipe is provided between the condensing cavity inlet (11) and the air outlet channel; The bottom of the condensation chamber (10) is provided with a drain port, and a solvent recovery bottle (13) is provided at the drain port.

5. The drying oven as described in claim 4, characterized in that: The drain outlet is provided with threads, and the solvent recovery bottle (13) is threadedly connected at the drain outlet.

6. The drying oven as described in claim 1, characterized in that: The air vent pipe (8) is a spiral pipe or a finned pipe.

7. The drying oven as described in claim 6, characterized in that: The surface of the spiral pipe and the inner surface of the condensation chamber are provided with a Teflon coating (14).

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