Electronic drying cabinet based on compressed air assisted dehumidification

Abstract

The application discloses an electronic drying cabinet based on compressed air auxiliary dehumidification, which comprises a main cabinet, a controller, an opening door detector and a compressed air supplement device, and the main cabinet is provided with an air inlet; the controller comprises a first signal input interface and a first signal output interface; the compressed air supplement device comprises an exhaust pipeline and an electronic valve, and the electronic valve is arranged on the exhaust pipeline; the exhaust pipeline is connected with the air inlet; the opening door detector is connected with the first signal input interface of the controller, and the first signal output interface of the controller is connected with the control end of the electronic valve; after the opening door detector detects that the cabinet door of the main cabinet is opened, an opening door signal is sent to the controller, the controller controls the electronic valve to be opened according to the opening door signal, and the exhaust pipeline delivers compressed air to the main cabinet through the air inlet.

Description

Technical Field

[0001] This application relates to the field of drying cabinet technology, and in particular to an electronic drying cabinet based on compressed air-assisted dehumidification. Background Technology

[0002] In recent years, my country has made significant progress in the development of electronic products, with an increasing variety of products and a growing number of humidity-sensitive electronic devices used in the production process. Companies often purchase large quantities of these devices in advance for storage. To meet the storage requirements of these humidity-sensitive electronic devices, the internal humidity of the drying cabinets where they are stored must meet the environmental requirements of the devices.

[0003] Currently, some electronic drying cabinets use humidity sensors to collect the internal humidity to achieve automatic dehumidification. Once the internal humidity exceeds the humidity threshold required by humidity-sensitive electronic devices, nitrogen gas is released to quickly dehumidify the cabinet. However, the internal humidity of electronic drying cabinets changes significantly after humidity-sensitive electronic devices are opened and removed. It often takes a considerable amount of time from when the humidity sensor detects an abnormal humidity level to when nitrogen gas is released to reduce the humidity to the low-humidity environment required for storing the devices. Frequent opening of the cabinet results in some humidity-sensitive electronic devices being stored in an environment exceeding the required humidity range for extended periods, significantly increasing the risk of device failure and affecting the storage reliability of the electronic drying cabinet. Utility Model Content

[0004] This application provides an electronic drying cabinet based on compressed air-assisted dehumidification, which introduces compressed air into the drying cabinet when the door is opened to quickly reduce the humidity inside the drying cabinet, thus solving the problem in the prior art that the internal humidity of electronic drying cabinets cannot be quickly reduced to the standard humidity range in a short time after the door is opened.

[0005] In a first aspect, this application provides an electronic drying cabinet based on compressed air-assisted dehumidification, comprising a main cabinet, a controller, a door opening detector, and a compressed air replenishment device, wherein: The main cabinet is provided with an air inlet; the controller includes a first signal input interface and a first signal output interface; the compressed air replenishment device includes an exhaust pipe and an electronic valve, the electronic valve being mounted on the exhaust pipe; the exhaust pipe is connected to the air inlet; the door opening detector is connected to the first signal input interface of the controller, and the first signal output interface of the controller is connected to the control terminal of the electronic valve; Specifically, after the door opening detector detects that the cabinet door of the main unit is open, it sends an opening signal to the controller. The controller controls the electronic valve to open according to the opening signal, and the exhaust pipe delivers compressed air to the main unit through the air inlet.

[0006] Optionally, the electronic drying cabinet is located in the component storage compartment of the production workshop, and the production workshop is equipped with an air compressor system that provides compressed air to various production equipment in the production workshop. The air compressor system is connected to the compressed air replenishment device to provide compressed air to the compressed air replenishment device.

[0007] Optionally, the air compressor system includes multiple air ducts laid in various areas of the production workshop, and the compressed air replenishment device is connected to the air duct laid in the nearest area.

[0008] Optionally, the air inlet of the main cabinet is located at the bottom of the main cabinet.

[0009] Optionally, the door opening detector is a door magnetic switch sensor, which includes a magnet end and a switch end. The magnet end is installed on the inner wall of the cabinet door of the main cabinet, and the switch end is installed on the door frame of the main cabinet. When the cabinet door of the main cabinet is closed, the switch end contacts the magnet end, and when the cabinet door of the main cabinet is opened, the switch end moves away from the magnet end to trigger an opening signal.

[0010] Optionally, the door opening detector is an infrared distance sensor, which is installed above the main cabinet. The infrared distance sensor forms a detection area within a preset range on the front side of the cabinet door of the main cabinet to trigger a door opening signal when an object is detected within the detection area.

[0011] Optionally, the electronic drying cabinet further includes a timer, the control terminal of which is connected to the second signal output interface of the controller, and the feedback terminal of which is connected to the second signal input interface of the controller; wherein, when the controller receives the door opening signal, it controls the timer to start timing, and when the timing duration reaches a preset duration threshold, the timer feeds back a timing end signal to the controller, and the controller controls the electronic valve to close based on the timing end signal, and the exhaust pipe stops supplying compressed air to the main cabinet.

[0012] Optionally, the electronic drying cabinet further includes a humidity sensor and a signal indicator. The humidity sensor is installed inside the main cabinet and is connected to the third signal input interface of the controller. If the timer sends a timing end signal to the controller when the timing duration reaches a preset duration threshold, and the humidity obtained by the controller from the humidity sensor does not reach the preset humidity threshold, then the signal indicator will be turned on.

[0013] Optionally, the controller is a circuit breaker, the control terminal of the circuit breaker is connected to the door opening detector, the output terminal of the circuit breaker is connected to the control terminal of the electronic valve, and the input terminal of the circuit breaker is connected to the power supply.

[0014] Optionally, the circuit breaker is a time-limited circuit breaker.

[0015] In this application, the electronic drying cabinet includes a main cabinet, a controller, a door opening detector, and a compressed air supply device. The main cabinet has an air inlet. The controller includes a first signal input interface and a first signal output interface. The compressed air supply device includes an exhaust pipe and an electronic valve, with the electronic valve mounted on the exhaust pipe. The exhaust pipe is connected to the air inlet. The door opening detector is connected to the first signal input interface of the controller, and the first signal output interface of the controller is connected to the control terminal of the electronic valve. After the door opening detector detects that the cabinet door of the main cabinet is open, it sends an opening signal to the controller. The controller controls the electronic valve to open according to the opening signal, and the exhaust pipe delivers compressed air to the main cabinet through the air inlet. By employing the aforementioned technical means, a door-opening detector can detect the moment a user opens the cabinet door and notify the controller. The controller then controls the electronic valve to open, allowing dry compressed air to be injected into the cabinet through the exhaust pipe. This dry compressed air displaces the high-humidity air inside the cabinet, leaving mostly dry air. This achieves a rapid reduction in humidity within the cabinet, effectively shortening the time required for the internal humidity of the electronic drying cabinet to drop to the standard humidity range after the door is opened. This solves the problem in existing technologies where electronic drying cabinets cannot quickly reduce the internal humidity to the standard humidity range after the door is opened. Consequently, it prevents humidity-sensitive electronic devices from being stored in an environment exceeding the required humidity range for extended periods, reducing the risk of failure for these devices and ensuring the storage reliability of the electronic drying cabinet. Attached Figure Description

[0016] Figure 1 This is a structural diagram of an electronic drying cabinet based on compressed air-assisted dehumidification provided in an embodiment of this application; Figure 2 This is a schematic diagram of the production workshop structure provided in the embodiments of this application; Figure 3 This is a schematic diagram of the installation of the infrared distance sensor provided in the embodiments of this application; Figure 4 This is a circuit diagram of the electronic drying cabinet provided in the embodiments of this application; Figure 5 This is a diagram showing the humidity change inside the electronic drying cabinet before modification, provided in an embodiment of this application. Figure 6 This is a diagram showing the humidity change inside the modified electronic drying cabinet provided in this application embodiment; In the diagram, 10 is the controller; 11 is the main cabinet; 12 is the door open detector; 13 is the exhaust pipe; 14 is the electronic valve; 15 is the air inlet; 16 is the cabinet door; 17 is the detection area; 18 is the infrared distance sensor; 19 is the circuit breaker; 20 is the air compressor system; 30 is the air compressor storage compartment; 40 is the component storage compartment; VCC is the power supply. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. It should also be noted that, for ease of description, only the parts relevant to this application are shown in the drawings, not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. A process can be terminated when its operation is completed, but it may also have additional steps not included in the drawings. A process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0018] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] In common existing implementations, some electronic drying cabinets use humidity sensors to collect internal humidity data to achieve automatic dehumidification. Once the internal humidity exceeds the threshold required by humidity-sensitive electronic devices, nitrogen gas is released to rapidly dehumidify the cabinet. However, the internal humidity of an electronic drying cabinet changes significantly after humidity-sensitive electronic devices are opened and removed. It often takes a considerable amount of time from when the humidity sensor detects an abnormal humidity level to when nitrogen gas is released to reduce the humidity to the required low-humidity environment for the devices. Frequent opening of the cabinet results in some humidity-sensitive electronic devices being stored in environments exceeding the required humidity range for extended periods, significantly increasing the risk of device failure and affecting the storage reliability of the electronic drying cabinet. Furthermore, nitrogen is a gas with high production costs; its continuous use to reduce humidity in the drying cabinet increases operating costs and impacts its sustainability.

[0020] To address the aforementioned issues, this embodiment provides an electronic drying cabinet based on compressed air-assisted dehumidification. Compressed air is introduced into the drying cabinet when the door is opened to rapidly reduce the internal humidity. Furthermore, the compressed air can be sourced from an air compressor system deployed within the production workshop, utilizing existing compressed air resources as the drying gas for the electronic drying cabinet, effectively saving on its operating costs.

[0021] Figure 1 A structural diagram of an electronic drying cabinet based on compressed air-assisted dehumidification, according to an embodiment of this application, is provided. (Reference) Figure 1 The electronic drying cabinet based on compressed air-assisted dehumidification includes a main cabinet 11, a controller 10, a door opening detector 12, and a compressed air replenishment device. The main cabinet 11 has an air inlet 15; the controller 10 includes a first signal input interface and a first signal output interface; the compressed air replenishment device includes an exhaust pipe 13 and an electronic valve 14, with the electronic valve 14 mounted on the exhaust pipe 13; the exhaust pipe 13 is connected to the air inlet 15; the door opening detector 12 is connected to the first signal input interface of the controller 10, and the first signal output interface of the controller 10 is connected to the control terminal of the electronic valve 14.

[0022] The main cabinet 11 is used to store humidity-sensitive electronic devices; the door open detector 12 is used to detect the opening and closing of the cabinet door 16 of the main cabinet 11; the controller 10 is used to control the electronic valve 14 of the compressed air supply device to open according to the detection status of the cabinet door 16 by the door open detector 12; the compressed air supply device is used to supply dry compressed air to the inside of the main cabinet 11 through the exhaust pipe 13 and the air inlet 15 when the electronic valve 14 is open.

[0023] Specifically, the drying process of the electronic drying cabinet is as follows: after the door opening detector 12 detects that the cabinet door 16 of the main cabinet 11 is open, it sends an opening signal to the controller 10. The controller 10 controls the electronic valve 14 to open according to the opening signal, and the exhaust pipe 13 delivers compressed air to the main cabinet 11 through the air inlet 15. The opening signal is triggered by the door opening detector 12 when it detects that the cabinet door 16 is open. When the user takes out or puts in the humidity-sensitive electronic device in the main cabinet 11, the cabinet door 16 will open. The door opening detector 12 captures the opening of the cabinet door 16 or before it opens, thereby generating an opening signal, which is transmitted to the first signal input interface of the controller 10. After receiving the door opening signal at the first signal input interface, the controller 10 confirms that the cabinet door 16 is open and sends a high-level signal to the control terminal of the electronic valve 14. Under the action of the high-level signal, the control terminal of the electronic valve 14 opens the valve. After the valve opens, the dry compressed air in the compressed air replenishment device enters the main cabinet 11 through the air inlet 15 along the exhaust pipe 13. The high humidity gas that enters the main cabinet 11 after the cabinet door 16 is opened is expelled from the main cabinet 11 by the dry compressed air, leaving most of the dry air in the main cabinet 11. This achieves the effect of quickly reducing the humidity inside the main cabinet 11 after the door is opened.

[0024] It should be noted that, through experimental verification, filling a relatively sealed small space with dry compressed air can rapidly reduce the humidity in the space to below 10% in approximately 5 minutes, thereby meeting the storage requirements of humidity-sensitive electronic devices and demonstrating the feasibility of using compressed air as a substitute for nitrogen. Table 1 shows the experimental data for filling two sizes of drying cabinets with compressed air provided in the embodiments of this application.

[0025] Table 1

[0026] As shown in Table 1, the internal volume of drying cabinet No. 1 is 334L, and the internal volume of drying cabinet No. 2 is 870L. Under traditional drying technology, the humidity in drying cabinet No. 1 is 43% after opening, requiring approximately 20 minutes to reduce it to 10%. However, with dry compressed air, the humidity in drying cabinet No. 1 is 21% after opening, and it only takes 5 minutes and 40 seconds to reduce it to 10%. Similarly, under traditional drying technology, the humidity in drying cabinet No. 2 is 43% after opening, requiring approximately 10 minutes to reduce it to 10%. However, with dry compressed air, the humidity in drying cabinet No. 2 is 20% after opening, and it only takes 3 minutes and 20 seconds to reduce it to 10%. The experimental data above shows that traditional drying cabinets cannot quickly dry the interior of the cabinet upon opening, and they also cannot achieve efficient drying speeds. Therefore, it takes a considerable amount of time to reduce the humidity to the level required for moisture-sensitive electronic devices. If users frequently open the door to remove these devices, the humidity inside the cabinet immediately rises again, causing the devices to be stored in an environment exceeding the required humidity range for extended periods. This significantly increases the risk of device failure and is detrimental to the storage of electronic materials. In contrast, the electronic drying cabinet provided in this embodiment can immediately inject dry compressed air into the cabinet upon opening door 16. This ensures that the humidity only rises to 20% after door 16 is opened, and then quickly drops to 10% within a short time. Even with frequent opening and closing of the door, the humidity inside the drying cabinet remains at a low level, ensuring that the devices are stored in an environment that meets their humidity requirements, reducing the risk of device failure and guaranteeing the reliability of the electronic drying cabinet.

[0027] Optionally, the compressed air replenishment device includes a compressed air storage device, which replenishes dry compressed air into the main cabinet 11.

[0028] In another embodiment, the electronic drying cabinet is located within the component storage compartment 40 of the production workshop. The production workshop is equipped with an air compressor system 20 that supplies compressed air to various production equipment within the workshop. The air compressor system 20 is connected to a compressed air supply device to supply compressed air to the compressed air supply device. For example, Figure 2 This is a schematic diagram of the production workshop provided in an embodiment of this application. For example... Figure 2As shown, the production workshop includes a component storage compartment 40 and an air compressor placement compartment 30. The component storage compartment 40 stores electronic drying cabinets, and the air compressor placement compartment 30 is equipped with an air compressor system 20. The air compressor system 20 generates dry compressed air through a refrigerated dryer and a drying adsorption tower, and then supplies dry compressed air to various production equipment through its exhaust port. The exhaust port is also connected to the inlet end of the exhaust pipe 13 of the compressed air replenishment device, and the outlet end of the exhaust pipe 13 is connected to the inlet 15 of the electronic drying cabinet. When the electronic valve 14 on the exhaust pipe 13 is opened, the dry compressed air generated by the air compressor system 20 enters the electronic drying cabinet through the exhaust pipe 13, thus replenishing the electronic drying cabinet with sufficient dry compressed air in a timely manner. This embodiment utilizes the existing air compressor system 20 in the production workshop as the source of the dry compressed air required by the electronic drying cabinet, making full use of existing dry air resources to achieve a rapid drying effect, balancing drying efficiency and operating costs.

[0029] Furthermore, the air compressor system 20 includes multiple air ducts laid in various areas of the production workshop, with the compressed air supply device connected to the nearest air duct. For example, in cases where the production workshop has a large floor area, the distance between the air compressor system 20 and the electronic drying cabinet is significant, making it impossible to directly connect the exhaust duct 13 to the exhaust port of the air compressor system 20. Since the air compressor system 20 includes multiple air ducts laid in various areas of the production workshop to provide dry compressed air to the production equipment in the corresponding areas, in this case, the exhaust duct 13 of the compressed air supply device can connect to the nearest air duct, introducing the dry compressed air from the air duct into the electronic drying cabinet. This shortens the length of the exhaust duct 13, thereby reducing the manufacturing or modification costs of the electronic drying cabinet.

[0030] refer to Figure 1 The air inlet 15 of the main cabinet 11 is located at the bottom of the main cabinet 11. For example, a magnetic strip is provided on the door frame of the main cabinet 11. When dry compressed air enters the main cabinet 11 from the air inlet 15 at the bottom, the dry compressed air can push the high humidity air in the cabinet out from the magnetic strip above the cabinet door 16, so that most of the dry compressed air remains in the cabinet, thereby achieving a rapid decrease in humidity inside the cabinet.

[0031] In one embodiment, the door opening detector 12 is a door magnetic switch sensor, which includes a magnetic end and a switch end. The magnetic end is installed on the inner wall of the cabinet door 16 of the main cabinet 11, and the switch end is installed on the door frame of the main cabinet 11. When the cabinet door 16 of the main cabinet 11 is closed, the switch end contacts the magnetic end; when the cabinet door 16 of the main cabinet 11 is opened, the switch end moves away from the magnetic end to trigger an opening signal. For example, the magnetic end can be a magnetic strip on the inner wall of the cabinet door 16 of the main cabinet 11, and the switch end is equipped with a reed switch. When the magnetic end contacts the switch end, the magnetic field generated by the magnetic end causes the metal piece inside the reed switch to attract, the circuit is turned on, and a closing signal is transmitted to the first signal input terminal of the controller 10. When the magnetic end does not contact the switch end, the metal piece inside the reed switch is disconnected, the circuit is turned off, and an opening signal is transmitted to the first signal input terminal of the controller 10. This embodiment uses a door magnetic switch sensor as a switch detector to effectively detect the opening and closing action of the cabinet door 16, while also enhancing the sealing of the cabinet door 16 through magnetic attraction.

[0032] The aforementioned door magnetic switch sensor, acting as a contact sensor, only triggers closing and opening signals when the cabinet door 16 contacts or moves away from the door frame. This means compressed air is only introduced into the drying cabinet after the cabinet door 16 is opened. Combined with communication delays, this increases the humidity level in the drying cabinet and prolongs the time required for the humidity to drop to the standard range. To address this, a non-contact sensor can be used to anticipate the user's door-opening action. Upon detection of this action, an opening signal is triggered, allowing dry compressed air to be introduced before or during the opening of the cabinet door 16. Even after the door 16 is opened, the humidity inside the drying cabinet remains low, thus shortening the time required for the humidity to drop to the standard range.

[0033] Optionally, the door opening detector 12 is an infrared distance sensor 18, which is installed above the main cabinet 11. The infrared distance sensor 18 forms a detection area 17 within a preset range on the front side of the cabinet door 16 of the main cabinet 11 to trigger a door opening signal when an object is detected within the detection area 17. For example, Figure 3 This is a schematic diagram of the installation of the infrared distance sensor 18 provided in an embodiment of this application. Figure 3As shown, the infrared probe of the infrared distance sensor 18 extends out of the cabinet door 16 of the main cabinet 11. The infrared probe emits infrared signals downwards, and the radiation area of ​​the infrared signals covers a preset range on the front side of the cabinet door 16, thus forming a detection area 17. When a user wants to open the cabinet door 16, their hand first enters the detection area 17. The infrared distance sensor 18 detects that an object has entered the detection area 17, thereby triggering an opening signal and transmitting the opening signal to the controller 10. Combining the transmission delay of the opening signal and the control delay of the controller 10, the user's action of opening the cabinet door 16 can be predicted in advance by detecting the detection area 17, thus triggering the opening signal in advance. When the user actually opens the cabinet door 16, dry compressed air can be injected with low delay to quickly expel the high humidity gas that enters at the moment of opening the door. This ensures that the humidity inside the drying cabinet remains low after the cabinet door 16 is opened, and also helps to shorten the time required for the humidity to drop to the standard humidity range.

[0034] It should be noted that implementing a magnetic door switch sensor requires installing the switch terminal inside the door frame of the electronic drying cabinet, meaning the electronic drying cabinet needs to be remanufactured. In contrast, the infrared distance sensor 18 can be directly installed on the top of the electronic drying cabinet, allowing for door opening detection through modification of existing cabinets, resulting in a lower cost.

[0035] In one embodiment, the electronic drying cabinet further includes a humidity sensor installed inside the main cabinet 11. The humidity sensor is connected to the third signal input interface of the controller 10. When the humidity inside the main cabinet 11 reaches a preset humidity threshold, the humidity sensor sends a humidity compliance signal to the controller 10. Based on the humidity compliance signal, the controller 10 controls the electronic valve 14 to close, and the exhaust pipe 13 to stop supplying compressed air to the main cabinet 11. For example, the preset humidity threshold is the maximum humidity value required for storing the humidity-sensitive electronic device. The controller 10 can send a data collection start signal to the humidity sensor after receiving an open signal. The humidity sensor collects the humidity inside the drying cabinet based on the data collection start signal. When the collected humidity is lower than the preset humidity threshold and remains below it for a certain period, confirming that the internal temperature of the drying cabinet has decreased to the humidity required by the humidity-sensitive electronic device, the controller 10 sends a humidity compliance signal to the third signal input interface of the controller 10. After receiving the humidity compliance signal, the controller 10 sends a low-level signal to the control terminal of the electronic valve 14. Under the action of the low-level signal, the control terminal of the electronic valve 14 closes the valve, and the exhaust pipe 13 stops supplying dry compressed air to the main cabinet 11. This embodiment uses a humidity sensor to monitor the humidity inside the drying cabinet in real time during the process of filling the drying cabinet with dry compressed air. When the humidity inside the drying cabinet meets the humidity requirements of the humidity-sensitive electronic devices, the supply of dry compressed air to the drying cabinet is stopped, thereby saving the amount of compressed air used.

[0036] In another embodiment, the electronic drying cabinet also includes a timer. The control terminal of the timer is connected to the second signal output interface of the controller 10, and the feedback terminal of the timer is connected to the second signal input interface of the controller 10. When the controller 10 receives a door opening signal, it controls the timer to start timing. When the timing duration reaches a preset time threshold, the timer sends a timing end signal to the controller 10. Based on the timing end signal, the controller 10 controls the electronic valve 14 to close, and the exhaust pipe 13 to stop supplying compressed air to the main cabinet 11. For example, the preset time threshold is the maximum time it takes for the humidity inside the cabinet to decrease to the range required by the humidity-sensitive electronic devices after the cabinet door 16 is opened. As the experimental data above shows, the humidity inside the cabinet can generally be reduced to the range required by the humidity-sensitive electronic devices after compressed air is introduced within 5 minutes; therefore, the preset time threshold can be set to 5 minutes. Upon receiving a door opening signal, the controller 10 sends a start-time signal to the timer, which then begins timing. When the timer's duration reaches a preset threshold, it generates a timeout signal and sends it to the controller 10's second signal input interface. Upon receiving this signal, the controller 10 sends a low-level signal to the control terminal of the electronic valve 14. The control terminal of the electronic valve 14 closes under the influence of the low-level signal, and the exhaust pipe 13 stops supplying dry compressed air to the main cabinet 11. This embodiment achieves rapid drying while conserving compressed air by starting a countdown after the dryer is filled with dry compressed air, thus controlling the amount of dry compressed air supplied to the dryer through a preset time threshold.

[0037] Furthermore, the electronic drying cabinet is equipped with a humidity sensor and a signal indicator light along with a timer. The humidity sensor collects humidity data to determine whether the compressed air supply device has supplied dry compressed gas into the drying cabinet, and illuminates the signal indicator light when the device has not supplied dry compressed gas. Specifically, the electronic drying cabinet also includes a humidity sensor and a signal indicator light. The humidity sensor is installed inside the main cabinet 11 and connected to the third signal input interface of the controller 10. If the timer sends a timeout signal to the controller 10 when the timeout duration reaches a preset threshold, and the humidity obtained by the controller 10 from the humidity sensor does not reach the preset humidity threshold, the control signal indicator light illuminates. For example, after receiving an open signal, the controller 10 sends a start-time signal to the timer and a start-collection signal to the humidity sensor, which collects the humidity after the drying cabinet has been supplied with dry compressed air. Under normal circumstances, when the compressed air supply time reaches the preset threshold, the humidity inside the drying cabinet should drop to the preset humidity threshold. If the humidity obtained by the controller 10 from the humidity sensor does not reach the preset humidity threshold, it indicates that the compressed air supply device is malfunctioning. This could be due to insufficient air supply or a faulty electronic valve 14 failing to open. At this time, the controller 10's control signal indicator light illuminates to alert the operator that the compressed air supply device is malfunctioning. This allows the operator to immediately relocate the humidity-sensitive electronic components inside the drying cabinet or take other drying measures to prevent them from being exposed to an environment exceeding the required humidity range for an extended period. This embodiment utilizes a timer and a humidity sensor to detect and alarm for abnormalities in the compressed air supply device, thereby further improving the reliability of the electronic drying cabinet.

[0038] In another embodiment, when the electronic drying cabinet is equipped with a humidity sensor, the humidity sensor can also detect the humidity inside the electronic drying cabinet in real time, so as to notify the controller 10 to control the compressed air replenishment device to fill the drying cabinet with dry compressed air when the humidity is too high. Specifically, when the humidity inside the main cabinet 11 exceeds a preset humidity threshold, the humidity sensor sends a humidity exceedance signal to the controller 10. The controller 10 controls the electronic valve 14 to open based on the humidity exceedance signal, and the exhaust pipe 13 delivers compressed air to the main cabinet 11 through the air inlet 15. The humidity sensor detects the humidity inside the main cabinet 11 at all times, compares the real-time detected humidity with the preset humidity threshold, and triggers a humidity exceedance signal once the humidity exceeds the preset humidity threshold, sending the humidity exceedance signal to the third signal input interface of the controller 10. The controller 10 may also receive a humidity exceedance signal when the cabinet door 16 is closed, and sends a high-level signal to the control terminal of the electronic valve 14 based on the humidity exceedance signal. The electronic valve 14 opens under the action of the high-level signal, and dry compressed air is replenished into the main cabinet 11. This embodiment uses a humidity sensor to detect the humidity of the electronic drying cabinet in real time. When the humidity of the electronic drying cabinet rises significantly due to interference from the ambient humidity, dry compressed air is quickly added to the cabinet. Even when the cabinet door 16 is closed, a low humidity environment can be maintained inside the cabinet, thereby ensuring the reliability of the electronic drying cabinet.

[0039] In specific application scenarios, controller 10 can select circuit breaker 19. Figure 4 This is a circuit diagram of the electronic drying cabinet provided in an embodiment of this application. Figure 4 As shown, the control terminal of circuit breaker 19 is connected to door open detector 12, the output terminal of circuit breaker 19 is connected to the control terminal of electronic valve 14, and the input terminal of circuit breaker 19 is connected to power supply VCC. The control terminal of circuit breaker 19 is equivalent to the first signal input interface of controller 10, and the output terminal of circuit breaker 19 is equivalent to the first signal output interface of controller 10. When door open detector 12 detects that the cabinet door 16 of the drying cabinet is open, it triggers an open signal. Under the action of the switch signal, the control terminal of circuit breaker 19 controls the input and output terminals to conduct, and power supply VCC directly sends a high-level signal to the control terminal of electronic valve 14, opening electronic valve 14 and allowing exhaust pipe 13 to deliver dry compressed gas into the drying cabinet. When circuit breaker 19 does not receive an open signal, the input and output terminals of circuit breaker 19 are disconnected, the control terminal of electronic valve 14 is at a low level, and electronic valve 14 is closed. When controller 10 selects circuit breaker 19, the circuit structure of the electronic drying cabinet is simpler, and the operating cost is lower.

[0040] Furthermore, if the electronic drying cabinet is to also function as a timer, i.e., to time the filling of compressed air into the cabinet, a time circuit breaker 19 can be used as the controller 10. The time circuit breaker 19 can automatically disconnect the circuit at a set time to achieve timed closing of the electronic valve 14. Specifically, after receiving an opening signal, the control terminal of the time circuit breaker 19 closes its input and output terminals and starts timing. When the timing duration reaches a preset time threshold, the control terminal's input and output terminals disconnect.

[0041] When the door opening detector 12 uses an infrared distance sensor 18 and the compressed air supply device is connected to the air compressor system 20 in the production workshop, the old electronic drying cabinet can be modified. Specifically, this involves adding a compressed air supply device, a controller 10, and an infrared distance sensor 18, as well as opening an air inlet 15 at the bottom of the electronic drying cabinet. Electrical connections are established between the controller 10, the infrared distance sensor 18, and the electronic valve 14 of the compressed air supply device. A pipe connection is established between the exhaust pipe 13 of the compressed air supply device and the air inlet 15. This allows for the modification of an electronic drying cabinet that can use compressed air for rapid drying, taking into account the economy, practicality, and reliability of the electronic drying cabinet.

[0042] To gain a more intuitive understanding of the rapid drying effect of the modified electronic drying cabinet in this embodiment, the humidity changes can be compared with those of the electronic drying cabinet before the modification. For example, Figure 5 This is a diagram showing the humidity change inside the electronic drying cabinet before modification, as provided in the embodiments of this application. Figure 6 This is a diagram showing the humidity change inside the modified electronic drying cabinet provided in an embodiment of this application. (See diagram for example.) Figure 5 and Figure 6 As shown, the electronic drying cabinet maintained a humidity level above 10% for a significantly longer period before the modification than after the modification. Furthermore, [the text abruptly ends here]. Figure 5 and Figure 6 The humidity data can be used to obtain Table 2, which shows a comparison of the data of the electronic drying cabinet before and after the modification.

[0043] Table 2

[0044] As shown in Table 2, the modified drying cabinet can increase the time with humidity below 10% from 400 minutes to 1255 minutes per day, and the proportion of time with humidity below 10% per day increases from 27.78% to 87.15%. Even if the door is opened as many as 14 times, the storage environment of humidity-sensitive electronic devices can be maintained within the standard humidity range for a long time, effectively reducing the failure risk of humidity-sensitive electronic devices and ensuring the reliability of the electronic drying cabinet.

[0045] In summary, the electronic drying cabinet based on compressed air-assisted dehumidification provided in this application embodiment detects the moment when the user opens the cabinet door 16 using the door opening detector 12, and notifies the controller 10 when the cabinet door 16 is opened. The controller 10 then controls the electronic valve 14 to open, allowing the exhaust pipe 13 to fill the cabinet with dry compressed air. The dry compressed air displaces the high-humidity air inside the cabinet, leaving mostly dry air inside. This achieves a rapid reduction in humidity inside the cabinet, effectively shortening the time it takes for the internal humidity of the electronic drying cabinet to drop to the standard humidity range after the door is opened. This solves the problem in the prior art where electronic drying cabinets cannot quickly reduce the internal humidity to the standard humidity range after the door is opened, thereby preventing humidity-sensitive electronic devices from being stored in an environment exceeding the humidity range requirements for a long time, reducing the risk of failure of humidity-sensitive electronic devices, and ensuring the storage reliability of the electronic drying cabinet.

[0046] The above description is merely a preferred embodiment and the technical principles employed in this application. This application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that can be made by those skilled in the art will not depart from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application. The scope of this application is determined by the scope of the claims.

Claims

1. An electronic drying cabinet based on compressed air-assisted dehumidification, characterized in that, Includes the main cabinet, controller, door opening detector, and compressed air supply unit, among which: The main cabinet is provided with an air inlet; the controller includes a first signal input interface and a first signal output interface; the compressed air replenishment device includes an exhaust pipe and an electronic valve, the electronic valve being mounted on the exhaust pipe; the exhaust pipe is connected to the air inlet; the door opening detector is connected to the first signal input interface of the controller, and the first signal output interface of the controller is connected to the control terminal of the electronic valve; Specifically, after the door opening detector detects that the cabinet door of the main unit is open, it sends an opening signal to the controller. The controller controls the electronic valve to open according to the opening signal, and the exhaust pipe delivers compressed air to the main unit through the air inlet.

2. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 1, characterized in that, The electronic drying cabinet is located in the component storage compartment of the production workshop. The production workshop is equipped with an air compressor system that provides compressed air to various production equipment in the production workshop. The air compressor system is connected to the compressed air supply device to supply compressed air to the compressed air supply device.

3. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 2, characterized in that, The air compressor system includes multiple air ducts laid in various areas of the production workshop, and the compressed air replenishment device is connected to the air duct laid in the nearest area.

4. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 1, characterized in that, The air inlet of the main cabinet is located at the bottom of the main cabinet.

5. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 1, characterized in that, The door opening detector is a door magnetic switch sensor, which includes a magnet end and a switch end. The magnet end is installed on the inner wall of the cabinet door of the main cabinet, and the switch end is installed on the door frame of the main cabinet. When the cabinet door of the main cabinet is closed, the switch end contacts the magnet end. When the cabinet door of the main cabinet is opened, the switch end moves away from the magnet end to trigger an opening signal.

6. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 1, characterized in that, The door opening detector is an infrared distance sensor, which is installed above the main cabinet. The infrared distance sensor forms a detection area within a preset range on the front side of the cabinet door to trigger a door opening signal when an object is detected within the detection area.

7. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 1, characterized in that, The electronic drying cabinet also includes a timer. The control terminal of the timer is connected to the second signal output interface of the controller, and the feedback terminal of the timer is connected to the second signal input interface of the controller. When the controller receives the door opening signal, it controls the timer to start timing. When the timing duration reaches a preset duration threshold, the timer sends a timing end signal to the controller. Based on the timing end signal, the controller controls the electronic valve to close, and the exhaust pipe stops supplying compressed air to the main cabinet.

8. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 7, characterized in that, The electronic drying cabinet also includes a humidity sensor and a signal indicator. The humidity sensor is installed inside the main cabinet and is connected to the third signal input interface of the controller. If the timer sends a timing end signal to the controller when the timing duration reaches a preset duration threshold, and the humidity obtained by the controller from the humidity sensor does not reach the preset humidity threshold, then the signal indicator will be turned on.

9. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 1, characterized in that, The controller is a circuit breaker. The control terminal of the circuit breaker is connected to the door opening detector, the output terminal of the circuit breaker is connected to the control terminal of the electronic valve, and the input terminal of the circuit breaker is connected to the power supply.

10. The electronic drying cabinet based on compressed air-assisted dehumidification according to claim 9, characterized in that, The circuit breaker is a time-limited circuit breaker.

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