An optical cable drying system
By combining a hot and cold air alternating drying system with components such as guide wheels, the problem of incomplete drying in optical cable production has been solved, achieving efficient and energy-saving optical cable drying, and avoiding problems such as sheath damage and unclear printing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG HENGTONG OPTICAL COMM CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-08-04
AI Technical Summary
In current optical cable production, room temperature or cold air dryers are insufficient to completely dry the optical cable, leading to problems such as unclear printing and damage to the sheath.
The system employs an alternating cold air isolation chamber and a hot air isolation chamber drying system. The cold air isolation chamber first performs cold air drying, and the hot air isolation chamber then performs hot air drying. Combined with components such as guide wheels, water brushes, temperature and humidity sensors, and controllers, it achieves efficient drying.
It improves the drying efficiency of optical cables, saves electricity, reduces energy loss, avoids damage to the sheath, and ensures clear printing.
Smart Images
Figure CN224593628U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical cable production technology, and specifically to an optical cable drying system. Background Technology
[0002] In current optical cable production, most dryers use ambient temperature or cold air for drying, typically employing opposing airflow drying methods. Their core principle involves two or more airflows opposing each other within a specific space to enhance heat and mass transfer efficiency, achieving rapid and uniform removal of moisture from the optical cable surface. These devices usually consist of an air source system, airflow guiding devices, and a modular structure, and can be widely used in the drying of finished optical cable sheaths. They are typically positioned between the end of the production water tank and the printing machine. The machine is connected to an air pump via a flexible hose and contains several air outlets. The optical cable is placed inside the machine, dried, and then quickly proceeds to the printing stage.
[0003] Although existing fiber optic cable dryers can generally dry large water droplets on the surface of the cable, their high production speed prevents them from achieving complete and thorough drying. If residual small water droplets or excessive moisture remain on the cable surface, it may negatively impact subsequent printing, resulting in poor adhesion between the ink and the cable, leading to blurry and unclear printing, requiring post-production copying. Furthermore, prolonged storage of a damp cable surface can cause the polymer chains in the sheath to break, leading to brittleness and cracking of the sheath.
[0004] Therefore, achieving high-speed and efficient drying in optical cable production is one of the key tasks for those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide an optical cable drying system that improves drying efficiency, has a simple structure, and high energy utilization efficiency.
[0006] To address the aforementioned technical problems, this utility model provides an optical cable drying system, comprising a cold air isolation chamber and a hot air isolation chamber. The cold air isolation chamber is equipped with a cold air dryer, and the hot air isolation chamber is equipped with a hot air dryer. The cold air dryer has a cold air passage for the optical cable to be dried and a cold air inlet for cold air output. The hot air dryer has a hot air passage for the optical cable to be dried and a hot air inlet for hot air output. The lateral dimension of the cold air passage gradually increases from the inlet to the outlet, and the lateral dimension of the hot air passage gradually decreases from the inlet to the outlet. The optical cable to be dried enters the cold air isolation chamber for cold air drying and is then output, while the optical cable dried by cold air in the hot air isolation chamber is then dried by hot air and output.
[0007] The cold air inlet is located at the outlet of the cold air passage, and the hot air inlet is located at the inlet of the hot air passage. The longitudinal section of the cold air passage and the hot air passage is trapezoidal, parabolic, or elliptical. The cold air inlet and the hot air inlet are duckbill-shaped or cylindrical air outlets.
[0008] It also includes water brushes installed at the entrance and exit of the cold air isolation chamber and at the entrance and exit of the hot air isolation chamber, for physically removing water from the optical cable to be dried. The water brushes are sponge water brushes or fine brush water brushes.
[0009] It also includes a first guide wheel and a first guide wheel bracket for supporting and guiding the optical cable to be dried, which are disposed in the cold air isolation chamber; and a second guide wheel and a second guide wheel bracket for supporting and guiding the optical cable to be dried, which are disposed in the hot air isolation chamber.
[0010] The device also includes an air intake fan located above the second guide wheel in the hot air isolation chamber, a gas recovery pipe located on the support of the second guide wheel, and a desiccant storage chamber located at the output end of the gas recovery pipe. The desiccant storage chamber stores desiccant particles for drying the gas output from the gas recovery pipe. The heater of the hot air dryer is located above the desiccant storage chamber, and the heater is a stainless steel electric heating tube or a PTC electric heater.
[0011] It also includes a cold air dryer bracket installed in the cold air isolation chamber for supporting the cold air dryer, and a hot air dryer bracket installed in the hot air isolation chamber for supporting the hot air dryer.
[0012] It also includes a first thermal insulation cover installed outside the cold air isolation room and a second thermal insulation cover installed in the hot air isolation room. The first thermal insulation cover is used to insulate the interior of the cold air isolation room, and the second thermal insulation cover is used to insulate the interior of the hot air isolation room.
[0013] It also includes a water droplet residue detector installed outside the hot air isolation room to detect residual water droplet information of the optical cable output from the hot air isolation room.
[0014] It also includes a first temperature and humidity sensor installed in the cold air isolation chamber and a second temperature and humidity sensor installed in the hot air isolation chamber.
[0015] The device also includes a controller and a display connected to the water droplet residue detector, the first temperature and humidity sensor, the second temperature and humidity sensor, the cold air dryer, and the hot air dryer. The controller is used to control the operating power of the cold air dryer and the hot air dryer, and the display is used to display the residual water droplet information, the first temperature and humidity information output by the first temperature and humidity sensor, the second temperature and humidity information output by the second temperature and humidity sensor, the cold air operating power of the cold air dryer, and the hot air operating power of the hot air dryer.
[0016] The optical cable drying system provided in this embodiment of the invention has the following advantages compared with the prior art:
[0017] The optical cable drying system provided in this embodiment of the utility model, by setting up a cold air isolation chamber and a hot air isolation chamber, allows the optical cable to be dried to first enter the cold air isolation chamber for cold air drying treatment before being output. Then, the hot air isolation chamber dries the optical cable that was dried by cold air with hot air before outputting it. The cold air dryer is provided with a cold air passage channel for the optical cable to be dried to pass through, and the cold air passage channel is provided with a cold air inlet for cold air output. The hot air dryer is provided with a hot air passage channel for the optical cable to be dried to pass through, and the hot air passage channel is provided with a hot air inlet for hot air output. The lateral dimension of the cold air passage channel gradually increases from the inlet to the outlet, while the lateral dimension of the hot air passage channel gradually decreases from the inlet to the outlet. The alternating blowing of cold and hot air saves more electricity than hot air drying alone. The conical groove can form a backflow, which is beneficial for drying. Energy loss is reduced through heat recovery. Attached Figure Description
[0018] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A schematic diagram of a structure of an embodiment of the optical cable drying system provided by this utility model;
[0020] Among them, 1-water brush, 2-first thermal insulation cover, 3-optical cable, 4-first guide wheel bracket, 5-first guide wheel, 6-cold air dryer, 7-cold air inlet, 8-cold air dryer bracket, 9-cold air duckbill-shaped outlet, 10-temperature and humidity detector, 11-hot air inlet, 12-desiccant storage chamber, 13-heater, 14-exhaust fan, 15-gas recovery pipe, 16-second guide wheel, 17-cable outlet, 18-water droplet detector, 19-controller. Detailed Implementation
[0021] 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.
[0022] Please refer to Figure 1 , Figure 1 This is a schematic diagram of one embodiment of the optical cable drying system provided by this utility model.
[0023] In one specific embodiment, the optical cable drying system includes a cold air isolation chamber and a hot air isolation chamber. A cold air dryer 6 is installed in the cold air isolation chamber, and a hot air dryer is installed in the hot air isolation chamber. The cold air dryer 6 has a cold air passage for the optical cable to be dried and a cold air inlet 7 for cold air output. The hot air dryer has a hot air passage for the optical cable to be dried and a hot air inlet 11 for hot air output. The lateral dimension of the cold air passage gradually increases from the inlet to the outlet, and the lateral dimension of the hot air passage gradually decreases from the inlet to the outlet. The optical cable to be dried enters the cold air isolation chamber for cold air drying and is then output, while the optical cable dried by cold air in the hot air isolation chamber is then dried by hot air and output.
[0024] By setting up a cold air isolation chamber and a hot air isolation chamber, the optical cable to be dried first enters the cold air isolation chamber for cold air drying and then exits. The hot air isolation chamber then dries the optical cable that was dried by cold air with hot air before exiting. The cold air dryer 6 is equipped with a cold air passage for the optical cable to be dried, and the cold air passage is equipped with a cold air inlet 7 for cold air output. The hot air dryer is equipped with a hot air passage for the optical cable to be dried, and the hot air passage is equipped with a hot air inlet 11 for hot air output. The lateral dimension of the cold air passage gradually increases from the inlet to the outlet, and the lateral dimension of the hot air passage gradually decreases from the inlet to the outlet. The alternating hot and cold air drying saves more electricity than hot air drying alone. The conical groove can form a backflow, which is beneficial for drying. Energy loss is reduced through heat recovery.
[0025] This application does not limit the location, number, distribution, and size of the cold air inlet 7 and the hot air inlet 11. In order to further improve energy utilization efficiency, in one embodiment, the cold air inlet 7 is located at the outlet of the cold air passage, and the hot air inlet 11 is located at the inlet of the hot air passage. The longitudinal section of the cold air passage and the hot air passage is trapezoidal, parabolic, or elliptical. The cold air inlet 7 and the hot air inlet 11 are duckbill-shaped air outlets 9 or cylindrical air outlets.
[0026] By using a cold air passage channel with a trapezoidal, parabolic, or elliptical longitudinal section, and a hot air passage channel, grooves are formed in the entry or exit direction of the optical cable 3. This increases the time for the airflow to clean the optical cable 3, and the temperature of the optical cable 3 will not be too high or too low, thus preventing damage to the optical cable 3. This improves the efficiency of power utilization and the drying efficiency of the optical cable 3.
[0027] By designing the hot air inlet 11 and the cold air inlet 7 as duckbill-shaped air outlets 9 or cylindrical air outlets, the airflow can be made more uniform, preventing the hot or cold air from being concentrated in a small area, thus improving the purging efficiency.
[0028] This application does not limit the shape or size of the cold air passage, the hot air passage, the hot air inlet 11, and the cold air inlet 7.
[0029] To further improve the efficiency of removing moisture, in one embodiment, the optical cable 3 drying system further includes a water brush 1 disposed at the inlet and outlet of the cold air isolation chamber and at the inlet and outlet of the hot air isolation chamber, for physically removing water from the optical cable to be dried. The water brush 1 is a sponge water brush or a fine brush water brush.
[0030] By installing water-brushing components 1 at the entrances and exits of the cold air isolation chamber and the hot air isolation chamber, the moisture in the optical cable to be dried can be pre-cleaned when it enters and exits the corresponding isolation chamber, reducing the amount of moisture dried by cold air and hot air in the cold air isolation chamber and the hot air isolation chamber, thereby improving drying efficiency and reducing the amount of electricity used.
[0031] This application does not limit the type, size, shape, or installation method of the water brush component 1.
[0032] Since cold and hot air are blown in the cold air isolation chamber and the hot air isolation chamber, if the channel distance is long, the optical cable 3 may be bent, which is not conducive to the installation of the related cold air dryer 6 and hot air dryer. In one embodiment, the optical cable drying system also includes a first guide wheel 5 and a first guide wheel bracket 4 for supporting and guiding the optical cable to be dried, which are disposed in the cold air isolation chamber; and a second guide wheel 16 and a second guide wheel bracket for supporting and guiding the optical cable to be dried, which are disposed in the hot air isolation chamber.
[0033] By installing and fixing guide wheels and guide wheel brackets in the relevant isolation chamber, the optical cable 3 can be guided freely, reducing the installation efficiency of related components and improving the flexibility of equipment use.
[0034] This application does not limit the structure, size, or installation method of the first guide wheel 5, the first guide wheel bracket 4, the second guide wheel 16, and the second guide wheel bracket.
[0035] To further improve heat utilization efficiency, in one embodiment, the optical cable drying system further includes an air intake fan 14 disposed above the second guide wheel in the hot air isolation chamber, a gas recovery pipe 15 disposed on the support of the second guide wheel, and a desiccant storage chamber 12 disposed at the output end of the gas recovery pipe 15. The desiccant storage chamber 12 stores desiccant particles for drying the gas output from the gas recovery pipe 15. The heater 13 of the hot air dryer is disposed above the desiccant storage chamber 12. The heater 13 is a stainless steel electric heating tube or a PTC electric heater.
[0036] By installing an air intake fan 14 above the second guide wheel, residual heat is drawn in through the air intake fan 14 and then enters the desiccant storage chamber 12 through the gas recovery pipe 15 for reuse, thereby improving energy utilization efficiency. At the same time, water vapor is recovered, which can reduce the water vapor content in the hot air isolation chamber and improve drying efficiency.
[0037] This application does not limit the type or quantity of desiccant particles, nor does it limit the type or location of the heater 13.
[0038] The structure of the cold air dryer 6 and the hot air dryer in this application is not limited. In order to improve the installation flexibility of the device, in one embodiment, the optical cable drying system further includes a cold air dryer bracket 8 disposed in the cold air isolation chamber for supporting the cold air dryer 6, and a hot air dryer bracket disposed in the hot air isolation chamber for supporting the hot air dryer.
[0039] By setting a cold air dryer bracket 8 to support the cold air dryer 6, and setting a hot air dryer bracket to support the hot air dryer, the dryers can be flexibly set in height and position, thus improving their flexibility in setting.
[0040] This application does not limit the structure or installation method of the cold air dryer bracket 8 and the hot air dryer bracket. They can also be set as height-adjustable structures, which can be adjusted as needed to improve the applicability of use.
[0041] To further improve the drying efficiency of each isolation chamber and reduce heat loss, in one embodiment, the optical cable drying system further includes a first thermal insulation cover 2 disposed outside the cold air isolation chamber and a second thermal insulation cover disposed in the hot air isolation chamber. The first thermal insulation cover 2 is used to insulate the interior of the cold air isolation chamber, and the second thermal insulation cover is used to insulate the interior of the hot air isolation chamber.
[0042] By installing thermal insulation covers on the outside of each isolation room to isolate heat, the heat insulation between the inside and outside is reduced, heat loss is reduced, and heat utilization efficiency is improved.
[0043] This application does not impose any restrictions on the size, material, or installation method of the first thermal insulation cover 2 and the second thermal insulation cover.
[0044] To further ensure the reliability of the device operation and avoid malfunctions affecting normal operation, in one embodiment, the optical cable drying system also includes a water droplet residue detector installed outside the hot air isolation room for detecting residual water droplet information of the optical cable 3 output from the hot air isolation room.
[0045] By installing a water droplet residue detector outside the hot air isolation chamber to detect residual water droplets on the optical cable 3 output from the hot air isolation chamber, real-time monitoring of the drying effect is possible. Furthermore, feedback on drying effect parameters can be provided, allowing for adjustments to the operating parameters of other components and timely detection of equipment malfunctions. For example, if a sudden surge in the number of residual water droplets is detected during a test, it indicates a malfunction in at least one piece of equipment during the previous drying process. The specific type of malfunction can be determined based on parameters such as water droplet size and distribution density, enabling rapid equipment maintenance and improving maintenance efficiency.
[0046] This application does not limit the structure or type of the water droplet residue detector. It can be implemented by image recognition, by taking an image and comparing it with the optical cable 3 without water droplets, thereby detecting water droplets. Alternatively, it can be implemented by light reflection, by detecting the position of the reflected light after refraction, etc. For example, the larger the water droplet, the thicker the actual water layer, and the greater the angle of deflection of the reflected light. Other detection structures can also be used.
[0047] To further enable environmental monitoring of the cold air isolation chamber and the hot air isolation chamber, and to monitor the drying process, in one embodiment, the optical cable drying system further includes a first temperature and humidity sensor installed in the cold air isolation chamber and a second temperature and humidity sensor 10 installed in the hot air isolation chamber.
[0048] By installing a first temperature and humidity sensor in the cold air isolation chamber and a second temperature and humidity sensor 10 in the hot air isolation chamber, the temperature and humidity changes can be monitored in real time. Through the feedback of temperature and humidity changes, the current drying information of the optical cable 3 and the operating status of the equipment can be obtained.
[0049] For example, a sudden increase in temperature and a sudden decrease in moisture concentration in the cold air isolation chamber indicates a malfunction in the cold air dryer 6, which is unable to output cold air normally, causing the temperature to rise. Simultaneously, it fails to remove water droplets from the optical cable 3, resulting in a decrease in the moisture content of the air. Similarly, a sudden decrease in temperature in the hot air isolation chamber indicates a deterioration in the heating effect of the hot air dryer.
[0050] This application does not limit the number, location, type, or data transmission method of the first and second temperature and humidity sensors 10.
[0051] To further achieve automated control of the entire system and improve control efficiency, in one embodiment, the optical cable drying system further includes a controller 19 and a display connected to the water droplet residue detector, the first temperature and humidity sensor, the second temperature and humidity sensor, the cold air dryer 6, and the hot air dryer. The controller 19 is used to control the operating power of the cold air dryer 6 and the hot air dryer, and the display is used to display the residual water droplet information, the first temperature and humidity information output by the first temperature and humidity sensor, the second temperature and humidity information output by the second temperature and humidity sensor 10, the cold air operating power of the cold air dryer 6, and the hot air operating power of the hot air dryer.
[0052] By setting up the controller 19 and the display, the operating status of each component is controlled according to the data feedback from the sensor and the external control commands, which improves the drying efficiency of the optical cable 3 and saves energy.
[0053] This application does not limit the type of controller 19 and display.
[0054] In one embodiment, the optical cable drying system, such as Figure 1 As shown, the system includes a sponge water brush 1 installed at the cable inlet of the cold air isolation chamber, a first thermal insulation cover 2 installed outside the cold air isolation chamber and the hot air isolation chamber, and an optical cable 3 entering from the cable inlet of the cold air isolation chamber and being supported and guided by a first guide wheel 5, which is mounted on a first guide wheel bracket 4. A cold air dryer 6 is installed inside the cold air isolation chamber and supported and mounted by a cold air dryer bracket 8, and air is discharged through a cold air inlet 7 installed on the cold air dryer bracket 8. The cold air from the duckbill-shaped cold air outlet to the cold air dryer 6 is output through the channel to clean the optical cable 3. An infrared temperature detector is installed in the hot air isolation chamber for temperature monitoring. A stainless steel electric heating tube is used as the heater 13 of the hot air dryer. The optical cable 3 is supported and guided by the second guide wheel 16, which is installed on the corresponding second guide wheel bracket. A hot air inlet 11 is set on the bracket of the second guide wheel 16. The hot air from the hot air dryer passes through the channel of the optical cable. The hot air outlet is set at the entrance of the channel. An air intake fan 14 is set above the hot air guide wheel 16. A gas recovery pipe 15 and a desiccant storage chamber 12 are set at the bottom. A sponge water brush 1 is set at the cable outlet 17. After the optical cable 3 is output, a water droplet detector 18 is used for water droplet detection. The operation of the entire system is centrally controlled by the controller 19.
[0055] During production, the optical cable 3 passes through the front and rear water inlets from left to right. It first passes through a cold air isolation chamber to blow away larger water droplets remaining on its surface, and then enters a hot air isolation chamber. When the infrared temperature detector reaches the set temperature, the temperature of the stainless steel electric heating tube is reduced, and the airflow is increased. When the water droplet detector 18 detects residual water droplets, the cold air volume is increased, and the temperature of the stainless steel electric heating tube rises. Residual heat is drawn in by the suction fan 14, then recovered by the gas recovery pipe 15, and returned to the desiccant storage chamber 12 for reuse.
[0056] The system described above uses alternating hot and cold air output, which is more energy-efficient than hot air drying alone. It automatically adjusts the temperature to ensure the outer sheath of the optical cable is sufficiently dry without damaging it due to excessive heat. The duckbill-shaped air nozzle ensures more even air distribution. The conical groove in the dryer creates a backflow, which is beneficial for drying. Heat recovery reduces energy loss and improves heat utilization efficiency.
[0057] In summary, the optical cable drying system provided by this utility model embodiment, by setting up a cold air isolation chamber and a hot air isolation chamber, allows the optical cable to be dried to first enter the cold air isolation chamber for cold air drying before being output. Then, the hot air isolation chamber dries the optical cable that was dried by the cold air before outputting it. The cold air dryer is provided with a cold air passage for the optical cable to be dried, and the cold air passage is provided with a cold air inlet for cold air output. The hot air dryer is provided with a hot air passage for the optical cable to be dried, and the hot air passage is provided with a hot air inlet for hot air output. The lateral dimension of the cold air passage gradually increases from the inlet to the outlet, while the lateral dimension of the hot air passage gradually decreases from the inlet to the outlet. The alternating blowing of cold and hot air saves more electricity than hot air drying alone. The conical groove can form a backflow, which is beneficial for drying. Energy loss is reduced through heat recovery.
[0058] The optical cable drying system provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. An optical cable drying system, characterized in that, The device includes a cold air isolation chamber and a hot air isolation chamber. The cold air isolation chamber is equipped with a cold air dryer, and the hot air isolation chamber is equipped with a hot air dryer. The cold air dryer has a cold air passage for the optical cable to be dried and a cold air inlet for cold air output. The hot air dryer has a hot air passage for the optical cable to be dried and a hot air inlet for hot air output. The lateral dimension of the cold air passage gradually increases from the inlet to the outlet, and the lateral dimension of the hot air passage gradually decreases from the inlet to the outlet. The optical cable to be dried enters the cold air isolation chamber for cold air drying and is then output, while the optical cable dried by cold air in the hot air isolation chamber is then dried by hot air and output.
2. The optical cable drying system as described in claim 1, characterized in that, The cold air inlet is located at the outlet of the cold air passage, and the hot air inlet is located at the inlet of the hot air passage. The longitudinal section of the cold air passage and the hot air passage is trapezoidal, parabolic, or elliptical. The cold air inlet and the hot air inlet are duckbill-shaped or cylindrical air outlets.
3. The optical cable drying system as described in claim 1, characterized in that, It also includes water brushes installed at the entrance and exit of the cold air isolation chamber and at the entrance and exit of the hot air isolation chamber, for physically removing water from the optical cable to be dried. The water brushes are sponge water brushes or fine brush water brushes.
4. The optical cable drying system as described in claim 1, characterized in that, It also includes a first guide wheel and a first guide wheel bracket for supporting and guiding the optical cable to be dried, which are disposed in the cold air isolation chamber; and a second guide wheel and a second guide wheel bracket for supporting and guiding the optical cable to be dried, which are disposed in the hot air isolation chamber.
5. The optical cable drying system as described in claim 4, characterized in that, It also includes an air intake fan located above the second guide wheel in the hot air isolation chamber, a gas recovery pipe located on the support of the second guide wheel, and a desiccant storage chamber located at the output end of the gas recovery pipe. The desiccant storage chamber stores desiccant particles for drying the gas output from the gas recovery pipe. The heater of the hot air dryer is located above the desiccant storage chamber. The heater is a stainless steel electric heating tube or a PTC electric heater.
6. The optical cable drying system as described in claim 5, characterized in that, It also includes a cold air dryer bracket disposed in the cold air isolation chamber for supporting the cold air dryer, and a hot air dryer bracket disposed in the hot air isolation chamber for supporting the hot air dryer.
7. The optical cable drying system as described in claim 1, characterized in that, It also includes a first thermal insulation cover installed outside the cold air isolation room and a second thermal insulation cover installed in the hot air isolation room. The first thermal insulation cover is used to insulate the interior of the cold air isolation room, and the second thermal insulation cover is used to insulate the interior of the hot air isolation room.
8. The optical cable drying system as described in claim 1, characterized in that, It also includes a water droplet residue detector installed outside the hot air isolation room for detecting residual water droplet information from the optical cable output from the hot air isolation room.
9. The optical cable drying system as described in claim 8, characterized in that, It also includes a first temperature and humidity sensor installed in the cold air isolation chamber and a second temperature and humidity sensor installed in the hot air isolation chamber.
10. The optical cable drying system as described in claim 9, characterized in that, It also includes a controller and a display connected to the water droplet residue detector, the first temperature and humidity sensor, the second temperature and humidity sensor, the cold air dryer, and the hot air dryer. The controller is used to control the operating power of the cold air dryer and the hot air dryer, and the display is used to display the residual water droplet information, the first temperature and humidity information output by the first temperature and humidity sensor, the second temperature and humidity information output by the second temperature and humidity sensor, the cold air operating power of the cold air dryer, and the hot air operating power of the hot air dryer.