A marine temperature and humidity control box

Abstract

This invention relates to the field of environmental control devices, specifically to a marine temperature and humidity control box, comprising a box body and a door. The box body houses a heating device, a cooling device, a dehumidification device, a gas device, a temperature sensor, a humidity sensor, a sample chamber, a chamber plate, and a PLC controller. The temperature and humidity sensors are electrically connected to the PLC controller. The PLC controller is electrically connected to the heating device, cooling device, dehumidification device, and gas device via the chamber plate. Through the cooperation of the temperature and humidity sensors and the PLC controller, the internal temperature and humidity of the box can be detected in real time. Based on the detection results, the operation of the heating device, cooling device, dehumidification device, and gas device can be automatically controlled to achieve heating, cooling, dehumidification, and gas circulation regulation, ensuring that the internal temperature and humidity of the box is maintained within a preset range for an extended period, thereby improving the stability, accuracy, and automation of temperature and humidity control.

Description

Technical Field

[0001] This invention relates to the field of environmental control devices, and more specifically to a marine temperature and humidity control box. Background Technology

[0002] During ship voyages, the cabin environment is susceptible to fluctuations in environmental parameters such as marine climate, diurnal temperature variations, changes in navigation area, and ventilation conditions within the ship's enclosed spaces. For certain electronic components, precision instrument spare parts, test samples, pharmaceuticals, and other items with stringent storage requirements, prolonged exposure to high humidity, unstable temperatures, or significant environmental fluctuations can easily lead to moisture absorption, corrosion, performance degradation, inaccurate test results, or storage failure. Therefore, in marine applications, storage equipment capable of stably controlling internal temperature and humidity is necessary to meet the safe storage needs of these items during voyages.

[0003] Existing temperature and humidity control boxes typically consist of temperature and humidity control sections. They regulate the internal environment through heating, cooling, dehumidification, humidification, or ventilation circulation, and monitor and control the temperature and humidity within the box using temperature sensors, humidity sensors, and controllers. However, existing temperature and humidity control boxes still have certain shortcomings in marine environments: Traditional temperature and humidity control boxes often use a single air duct or ordinary circulating air structure to regulate the gas inside the box. After the internal space of the box is divided by partitions, sample racks or multiple sample chambers, the internal airflow circulation effect is poor, which can easily form local dead zones. This leads to uneven temperature and humidity distribution in different parts of the box, affecting the consistency of environmental conditions for stored items. Moreover, temperature and humidity control boxes usually cannot maintain a low humidity storage environment, especially in the high humidity marine environment of ships. If the external air humidity is high, and the dehumidification efficiency is insufficient or the box sealing and airflow organization design are unreasonable, it is difficult to meet the requirements of dry storage or low humidity preservation. In addition, the box door needs to be opened and closed to store and retrieve samples. Since the internal environmental conditions are greatly affected by the external environment when the box door is opened or closed, the temperature and humidity inside the box fluctuate drastically, which will have an adverse effect on the items inside. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a marine temperature and humidity control box.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A marine temperature and humidity control box includes a box body and a box door. The box body is equipped with a heating device, a cooling device, a dehumidification device, a gas device, a temperature sensor, a humidity sensor, a sample chamber, a chamber plate, and a PLC controller. The temperature sensor and humidity sensor are both electrically connected to the PLC controller. The PLC controller is electrically connected to the heating device, cooling device, dehumidification device, and gas device respectively through the chamber plate, and is used to control the operation of the heating device, cooling device, dehumidification device, and gas device according to the temperature and humidity signals inside the box to regulate the temperature and humidity inside the box. A support frame is connected to the inner top wall of the box body, and a receiving chamber plate is connected to the box door through the support frame. A constraint seal is provided on one end of the upper surface of the receiving chamber plate. A cylindrical shell is fitted at the connection between the side and the receiving cavity plate. An inner sleeve shell is movably inserted into the cylindrical shell. An anti-backflow cone pad is connected to one end of the cylindrical shell, and a sleeve is connected to one end of the anti-backflow cone pad. A gap is formed between the anti-backflow cone pad and the sleeve, and a steel ball is placed in the gap. Both the anti-backflow cone pad and the sleeve have interconnected channels. A spring connects the anti-backflow cone pad and the inner sleeve shell. A locking post is fixedly connected to one end face of the sleeve. The locking post is movably engaged with a support frame plate. A sliding plate is connected to the support frame plate. The sliding plate is slidably engaged with a slide rail. An outlet groove is opened near the slide rail in the box. The outlet groove is adapted to the sliding plate so that the temperature and humidity environment inside the box is constrained by the cylindrical shell, inner sleeve shell, anti-backflow cone pad, sleeve, and steel ball during sample storage and retrieval.

[0006] In a preferred embodiment, the gas device includes an air inlet, an air outlet, a compressor, and a blower. The air inlet is located at the bottom of the housing and communicates with the interior of the housing through the blower. The air outlet is located at the top of the housing and communicates with the exterior of the housing through the blower. The compressor is used in conjunction with a refrigeration device or a dehumidification device to refrigerate or dehumidify the gas entering the housing.

[0007] In a preferred embodiment, the heating device is located at the rear of the box, and the heat source of the heating device is an electric heating source. The refrigeration device includes a refrigeration compressor and refrigeration pipes. The refrigeration compressor is located at the bottom of the box, and the refrigeration pipes are located inside the box. The dehumidification device includes an internal condenser located inside the box. The internal condenser is composed of several condensation pipes to reduce the humidity inside the box by condensation.

[0008] In a preferred embodiment, the heating device is located at the rear of the box, and the heat source of the heating device is an electric heating source. The refrigeration device includes a refrigeration compressor and refrigeration pipes. The refrigeration compressor is located at the bottom of the box, and the refrigeration pipes are located inside the box. The dehumidification device includes an internal condenser located inside the box. The internal condenser is composed of several condensation pipes to reduce the humidity inside the box by condensation.

[0009] In a preferred embodiment, one side of the outer arc surface of the cylindrical shell is configured as a straight cylinder structure, and the other side is configured as a conical cylinder structure. The straight cylinder structure is used to cooperate with the receiving cavity plate and the constraint sealing edge for positioning, and the conical cylinder structure is used to cooperate with the anti-backflow cone pad to form a flow guiding and anti-backflow structure.

[0010] In a preferred embodiment, the inner arc surface of the cylindrical shell is provided with a pressing end in the middle, one end of the inner sleeve shell is movably inserted into the pressing end, and the outer arc surface of the inner sleeve shell is provided with an anti-backflow edge near the straight cylinder structure. The anti-backflow edge cooperates with the inner wall of the cylindrical shell to block the reverse flow of airflow or moisture inside the box.

[0011] In a preferred embodiment, the anti-backflow cone pad is provided with a flow guide rod at one end near the inner sleeve shell, the inner arc surface of the inner sleeve shell is provided with a rotation channel, the flow guide rod is provided corresponding to the rotation channel, and is used to guide the airflow along the rotation channel. The front end of the anti-backflow cone pad is provided with a sealing wing section, and the sleeve is snapped onto the outer arc surface of the sealing wing section.

[0012] In a preferred embodiment, the anti-backflow cone pad is provided with a flow guide rod at one end near the inner sleeve shell, the inner arc surface of the inner sleeve shell is provided with a rotation channel, the flow guide rod is provided corresponding to the rotation channel, and is used to guide the airflow along the rotation channel. The front end of the anti-backflow cone pad is provided with a sealing wing section, and the sleeve is snapped onto the outer arc surface of the sealing wing section.

[0013] In a preferred embodiment, the outer arc surface of the locking pin is provided with a tongue lock, the tongue lock is sloping, the support frame plate is U-shaped, the locking pin is movably engaged with the support frame plate through the tongue lock, the upper surface of the support frame plate is provided with a connecting edge, the sliding plate is fixedly installed on the surface of the connecting edge, the slide rail slides in cooperation with the sliding plate, so that the sliding plate can extend or retract along the direction of the outlet groove, thereby driving the locking pin, the sleeve, the anti-return cone pad and the inner sleeve shell to move relative to the box body.

[0014] The beneficial effects of this invention are: By combining temperature and humidity sensors with a PLC controller, the internal temperature and humidity of the enclosure can be detected in real time. Based on the detection results, the heating, cooling, dehumidifying and gas devices can be automatically controlled to achieve heating, cooling, dehumidification and gas circulation regulation, so that the internal temperature and humidity of the enclosure can be maintained within the preset range for a long time, thereby improving the stability, accuracy and automation of temperature and humidity control.

[0015] The structure uses multiple small doors corresponding to multiple sample chambers. When storing or retrieving items, only the corresponding small door needs to be opened, avoiding the large amount of humid air from entering the entire box when the entire box is opened. At the same time, the sample chambers are separated from each other, which can reduce the impact of opening a door in one area on other storage areas, thereby reducing the fluctuation of temperature and humidity inside the box and ensuring that unretrieved items remain in a relatively stable storage environment.

[0016] The structure forms a buffer, flow guide, and one-way anti-backflow structure through a cylindrical shell, inner sleeve shell, anti-backflow cone pad, sleeve, steel ball, and spring. The linkage displacement of the sliding plate and slide rail after the door is opened allows the structure to constrain the airflow channel when the door is opened to pick up or put in items. This reduces the impact of airflow, limits the backflow of humid air from external ships into the container, reduces the rapid leakage of regulated air from inside the container, and improves the ability to maintain a low-humidity and constant-temperature environment inside the container.

[0017] It can provide stable temperature and humidity storage conditions for environmentally sensitive items such as pharmaceuticals and high-precision electronic components. It reduces the impact of the external environment through partitioned storage, partial opening and anti-backflow constraints. Since the temperature and humidity deviation inside the cabinet is small after the door is opened and closed, the PLC controller can quickly complete the compensation adjustment, reducing the frequent or long-term operation of heating, cooling and dehumidification devices, thereby improving storage reliability and reducing equipment operating load. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the front side of the housing of the present invention; Figure 2 This is a front view of the internal structure of the cabinet door of the present invention; Figure 3 This is a structural diagram of the back of the housing of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the internal disassembly of the box door of the present invention; Figure 5 This is a display diagram of the support frame three-dimensional structure of the present invention; Figure 6 This is a schematic diagram of the connection between the cylindrical shells of the present invention; Figure 7 This is a cross-sectional view of the connection between the cylindrical shell and the anti-return cone pad of the present invention.

[0019] In the diagram: 1. Chamber; 2. Chamber door; 6. PLC controller; 7. Blower; 8. Dehumidifier; 9. Refrigeration unit; 10. Heating unit; 11. Exhaust vent; 12. Temperature sensor; 13. Humidity sensor; 14. Chamber plate; 15. Air inlet; 16. Compressor; 17. Sample chamber; 18. Support frame; 19. Receiving cavity plate; 191. Restraining edge sealing; 20. Cylindrical shell; 201. Pressing end; 21. Inner sleeve shell; 211. Anti-backflow edge; 212. Rotation channel; 22. Anti-rebound cone pad; 221. Flow guide rod; 222. Sealing wing section; 23. Sleeve body; 231. Vent hole; 24. Steel ball; 25. Spring; 26. Locking pin; 261. Tongue lock; 27. Support plate; 271. Connecting edge; 28. Slide plate; 29. ​​Slide rail; 30. Outlet groove. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] Combination Figures 1 to 7This embodiment provides a marine temperature and humidity control box, including a box body 1 and a door 2. The box body 1 houses a heating device 10, a cooling device 9, a dehumidifying device 8, a gas device, a temperature sensor 12, a humidity sensor 13, a sample chamber 17, a chamber plate 14, and a PLC controller 6. The temperature sensor 12 and humidity sensor 13 are electrically connected to the PLC controller 6. The PLC controller 6 is electrically connected to the heating device 10, cooling device 9, dehumidifying device 8, and gas device via the chamber plate 14, and is used to control the operation of the heating device 10, cooling device 9, dehumidifying device 8, and gas device based on the temperature and humidity signals within the box body 1, thereby regulating the temperature and humidity within the box body 1. A support frame 18 is connected to the inner top wall of the box body 1. The door 2 is connected to a receiving chamber plate 19 via the support frame 18. A constraint seal 191 is provided on one end of the upper surface of the receiving chamber plate 19, and the constraint seal 191 is connected to the receiving chamber plate 19. A cylindrical shell 20 is fitted at the connection point, and an inner sleeve shell 21 is movably inserted inside the cylindrical shell 20. One end of the cylindrical shell 20 is connected to an anti-backflow cone pad 22, and one end of the anti-backflow cone pad 22 is connected to a sleeve 23. A gap is formed between the anti-backflow cone pad 22 and the sleeve 23, and a steel ball 24 is placed within the gap. Both the anti-backflow cone pad 22 and the sleeve 23 have interconnected channels. A spring 25 connects the anti-backflow cone pad 22 and the inner sleeve shell 21. The sleeve 23... A locking post 26 is fixedly connected to one end face. The locking post 26 is movably engaged with a support frame plate 27. The support frame plate 27 is connected to a sliding plate 28. The sliding plate 28 is slidably engaged with a slide rail 29. A cavity groove 30 is opened near the slide rail 29 in the box body 1. The cavity groove 30 is adapted to the sliding plate 28 so that the box door 2 can constrain the internal temperature and humidity environment of the box body 1 through the cylindrical shell 20, the inner sleeve shell 21, the anti-backflow cone pad 22, the sleeve 23 and the steel ball 24 during the sample storage and retrieval process.

[0022] according to Figure 1 and Figure 2 Specifically, after the marine temperature and humidity control box is started, the user can preset the target temperature and humidity values ​​inside the box 1 through the PLC controller 6. The temperature sensor 12 installed inside the box 1 collects the temperature signal inside the box 1 in real time, and the humidity sensor 13 collects the humidity signal inside the box 1 in real time. The collected temperature and humidity signals are transmitted to the PLC controller 6. After receiving the above signals, the PLC controller 6 compares the actual detected values ​​with the preset target values, and controls the start / stop or operation status of the heating device 10, the cooling device 9, the dehumidification device 8 and the gas device through the cavity plate 14 according to the comparison results, thereby adjusting the internal environment of the box 1.

[0023] During temperature regulation, when the temperature sensor 12 detects that the internal temperature of the chamber 1 is lower than the set temperature range, the PLC controller 6 controls the heating device 10 to turn on. The heating device 10 is located at the rear of the chamber 1, and its heat source can be an electric heating source. When it is working, it heats the air inside the chamber 1, causing the internal temperature of the chamber 1 to gradually rise. When the temperature sensor 12 detects that the internal temperature of the chamber 1 has reached the set range, the PLC controller 6 controls the heating device 10 to stop or reduce its working state to prevent the internal temperature of the chamber 1 from continuing to rise.

[0024] When the temperature sensor 12 detects that the internal temperature of the enclosure 1 is higher than the set temperature range, the PLC controller 6 controls the refrigeration device 9 to work. The refrigeration device 9 includes a refrigerator and refrigeration pipes. The refrigerator is located at the bottom of the enclosure 1, and the refrigeration pipes are located inside the enclosure 1. After the refrigeration device 9 is started, the refrigeration compressor drives the refrigerant to circulate and cools the air inside the enclosure 1 through the refrigeration pipes, so that the internal temperature of the enclosure 1 gradually decreases. When the internal temperature of the enclosure 1 drops to the set range, the PLC controller 6 controls the refrigeration device 9 to stop or enter the maintenance operation state, thereby realizing the automatic adjustment and constant control of the internal temperature of the enclosure 1.

[0025] During humidity regulation, when the humidity sensor 13 detects that the humidity inside the cabinet 1 is higher than the set humidity range, the PLC controller 6 controls the dehumidification device 8 and the compressor 16 that works with it. The dehumidification device 8 includes an internal condenser located inside the cabinet 1, which consists of several condenser tubes. When the dehumidification device 8 is working, the humid air inside the cabinet 1 comes into contact with the surface of the condenser tubes, and the water vapor in the air condenses into liquid water, thereby reducing the humidity content in the air inside the cabinet 1 and achieving dehumidification. At the same time, the compressor 16 can work with the refrigeration device 9 or the dehumidification device 8 to cool or dehumidify the gas entering the cabinet 1 to further improve the humidity regulation efficiency inside the cabinet 1. When the humidity sensor 13 detects that the humidity inside the cabinet 1 has reached the set range, the PLC controller 6 controls the dehumidification device 8 to stop or reduce its operating intensity, thereby keeping the humidity inside the cabinet 1 within the required range.

[0026] The gas device is used to assist in the gas flow, ventilation, and environmental equalization inside the chamber 1. The gas device includes an air inlet 15, an air outlet 11, a compressor 16, and a blower 7. The air inlet 15 is located at the bottom of the chamber 1, and the air outlet 11 is located at the top of the chamber 1. When the blower 7 is working, gas can enter the chamber 1 through the air inlet 15 and cause the air inside the chamber 1 to circulate. At the same time, the air outlet 11 can work with the blower 7 to discharge some gas to the outside of the chamber 1. Since the air inlet 15 is located at the bottom of the chamber 1 and the air outlet 11 is located at the top of the chamber 1, an airflow organization from bottom to top is formed inside the chamber 1, which is conducive to the uniformity of temperature and humidity in different areas inside the chamber 1 and reduces local temperature and humidity differences.

[0027] When the ship's temperature and humidity control box is used to store medicines, high-precision electronic components, or other items sensitive to environmental conditions, the box door 2 is usually closed first, and the target temperature and humidity are set through the PLC controller 6. Then, based on the detection data fed back by the temperature sensor 12 and the humidity sensor 13, the PLC controller 6 controls the heating device 10, the cooling device 9, the dehumidification device 8, and the gas device to work, so that the inside of the box 1 gradually reaches the set temperature and humidity environmental conditions. After the environment inside the box 1 reaches the set requirements, the user opens the corresponding small door and puts the medicines, high-precision electronic components, or samples into the corresponding sample chamber 17.

[0028] The door 2 is located on the front side of the box body 1 and consists of several small doors with handles. Each small door is equipped with an observation window. The sample chamber 17 is located inside the box body 1 and is correspondingly arranged with the door 2. Different sample chambers 17 are separated by stainless steel plates. Several small holes are provided on the stainless steel plate behind the sample chamber 17. The sample chamber 17 is connected to the internal environment of the box body 1 through the small holes. Thus, gas exchange can be achieved between the large space behind the box body 1 and each sample chamber 17, allowing air that has been heated, cooled, or dehumidified to enter each sample chamber 17 through the small holes, thereby ensuring that the temperature and humidity in each sample chamber 17 meet the storage requirements.

[0029] During the storage or retrieval of items, users only need to open the small door matching the corresponding sample chamber 17, without having to open the large door on the front of the entire box 1. Because the area of ​​each small door opened is small, and the sample chambers 17 are separated from each other, the humid air from the external ship's cabin will only have a limited impact on the corresponding opened area and is unlikely to directly diffuse into the entire interior space of the box 1. This reduces the amount of high-humidity air entering the box 1 during the opening and closing of the box door 2, reduces temperature and humidity fluctuations inside the box 1, and ensures that other items not yet retrieved remain in a relatively stable temperature and humidity environment. Furthermore, when the door 2 is closed, the cylindrical shell 20 cooperates with the receiving cavity plate 19 and the constraint sealing edge 191 to form a relatively stable airflow constraint space. The inner sleeve shell 21 is inserted into the cylindrical shell 20. The anti-backflow cone pad 22, the sleeve body 23 and the steel ball 24 are located at one end of the airflow path, making this position form a structure similar to a one-way valve. At this time, the air inside the box 1 will not leak out quickly through this area, and the external humid air will not easily enter the box 1 in reverse.

[0030] When the gas inside the housing 1 flows due to the circulation of the blower 7, temperature and humidity regulation, or pressure changes near the door 2, the airflow first enters the cylindrical shell 20. Since one side of the cylindrical shell 20 is a straight cylinder and the other side is a conical transition, the airflow is gradually guided as it passes through, rather than directly impacting the opening area near the door 2. This structure can slow down the airflow speed and make the airflow more stable, thereby reducing the drastic fluctuations in temperature and humidity inside the housing 1.

[0031] like Figure 6 and Figure 7 The inner sleeve shell 21 has a certain amount of room for movement within the cylindrical shell 20. When the airflow pressure changes, the inner sleeve shell 21 can produce a slight displacement within the cylindrical shell 20 and work with the spring 25 to form a buffer effect. In other words, when the air pressure disturbance occurs at the moment the box door 2 opens or closes, this structure will not allow the airflow to flow directly through. Instead, it will absorb part of the airflow impact through the displacement of the inner sleeve shell 21 and the elastic reset of the spring 25, making the air pressure change inside the box 1 more gradual.

[0032] The inner arc surface of the cylindrical shell 20 is provided with a pressing end 201. One end of the inner sleeve shell 21 is movably inserted into the pressing end 201. The outer arc surface of the inner sleeve shell 21 is provided with an anti-backflow edge 211 near the straight cylinder structure. The anti-backflow edge 211 cooperates with the inner wall of the cylindrical shell 20 to block the reverse flow of airflow or moisture in the box 1.

[0033] A steel ball 24 is provided between the anti-backflow cone pad 22 and the sleeve 23. The steel ball 24 can move under the action of airflow pressure. When the airflow flows in the permissible direction, the steel ball 24 is pushed open by the airflow, so that the channel maintains a certain ventilation capacity, and the inside of the box 1 can carry out necessary gas buffering or micro-flow. When the external humid air attempts to enter the inside of the box 1 in the reverse direction, the reverse airflow will push the steel ball 24 close to the channel opening of the anti-backflow cone pad 22 or the sleeve 23, so that the channel is blocked or narrowed, thereby inhibiting the backflow of external humid air. This process is similar to the working mode of a one-way check structure.

[0034] When the door 2 is opened to access items, the door 2 opens outward relative to the body 1. Since there is a movable locking relationship between the locking pin 26 and the support plate 27, the opening action of the door 2 will cause the support plate 27 to move. The support plate 27 will further cause the slide plate 28 to slide along the slide rail 29. In other words, the slide plate 28 is displaced along the slide rail 29 after the door 2 is opened due to the linkage action of the door 2.

[0035] As the slide plate 28 slides along the slide rail 29 toward the outlet groove 30, the support frame plate 27 connected to it moves synchronously, and through the locking pin 26, it drives the sleeve 23, the anti-backflow cone pad 22 and the inner sleeve shell 21 to generate corresponding axial displacement. This displacement causes the airflow channel inside the cylindrical shell 20 to change, forming a constraint channel that expands or extends synchronously with the opening of the box door 2. At this time, even if the external humid air enters the vicinity of the box door 2 due to the opening of the box door 2, it will not directly rush into the box body 1 in large quantities, but will be blocked, buffered and limited by the cylindrical shell 20, the inner sleeve shell 21, the anti-backflow cone pad 22 and the steel ball 24.

[0036] The anti-backflow cone pad 22 has a flow guide rod 221 at one end near the inner sleeve shell 21. The inner arc surface of the inner sleeve shell 21 has a rotary channel 212. The flow guide rod 221 is correspondingly arranged with the rotary channel 212 to guide the airflow along the rotary channel 212. The front end of the anti-backflow cone pad 22 has a sealing wing section 222, and the sleeve 23 is snapped onto the outer arc surface of the sealing wing section 222.

[0037] A vent 231 is provided at the bottom of the outer arc surface of the sleeve 23. The vent 231 is connected to the channel inside the sleeve 23. The steel ball 24 is placed in the gap between the anti-backflow cone pad 22 and the sleeve 23. It can open or close the channel or limit the flow under the action of airflow or the reset action of the spring 25 to form a one-way anti-backflow structure.

[0038] The outer arc surface of the locking pin 26 is provided with a tongue lock 261, which is sloping. The support frame plate 27 has a U-shaped structure. The locking pin 26 is movably engaged with the support frame plate 27 through the tongue lock 261. The upper surface of the support frame plate 27 is provided with a connecting edge 271. The sliding plate 28 is fixedly installed on the surface of the connecting edge 271. The slide rail 29 slides with the sliding plate 28, so that the sliding plate 28 can extend or retract along the direction of the outlet groove 30, thereby driving the locking pin 26, the sleeve 23, the anti-return cone pad 22 and the inner sleeve shell 21 to move relative to the box 1.

[0039] Specifically, after the door 2 is opened, the slide plate 28 moves along the slide rail 29, so that the steel ball 24 between the anti-backflow cone pad 22 and the sleeve 23 can open and close or restrict the flow according to the airflow direction and pressure changes. When the external humid air attempts to backflow into the box 1, the reverse airflow pushes the steel ball 24 close to the channel opening, so that the channel is partially or completely blocked, thereby reducing the speed and flow of the external humid air entering the box 1. At the same time, the rotation and buffer channel formed between the inner sleeve shell 21 and the cylindrical shell 20 can extend the airflow path, weaken the airflow impact generated at the moment of opening the door, and avoid drastic fluctuations in the temperature and humidity environment inside the box 1.

[0040] When the box door 2 continues to open to the pick-up and put-down position, the displacement of the slide plate 28 on the slide rail 29 keeps the above-mentioned constraint structure in the extended or working position, forming a continuous airflow constraint on the opening area of ​​the box door 2. When the user picks up and puts down the sample in this state, a completely open direct airflow path will not be formed between the inside of the box 1 and the external environment, thereby reducing the impact of the ship's humid environment on the low humidity and constant temperature environment inside the box 1.

[0041] When the door 2 is closed, the door 2 drives the support plate 27 to move in the opposite direction, and the slide plate 28 returns to the initial position along the slide rail 29. At the same time, the spring 25 pushes the inner sleeve shell 21, the anti-backflow cone pad 22 and other components to reset, and the steel ball 24 also returns to the flow limiting or blocking position, so that the inside of the cylindrical shell 20 re-forms a stable anti-backflow state. After that, the inside of the box 1 continues to be detected and regulated by the temperature sensor 12, the humidity sensor 13 and the PLC controller 6, so that the temperature and humidity are restored and maintained within the set range.

[0042] Meanwhile, the airflow guiding structure on the anti-backflow cone pad 22 cooperates with the rotary channel 212 inside the inner sleeve shell 21, so that the airflow entering this area does not pass through in a straight line quickly, but flows along a rotary path. The rotary channel 212 can extend the airflow path and increase the flow resistance, making it difficult for moisture in the airflow to quickly enter the interior of the box 1, and also preventing the stable low-humidity air inside the box 1 from being quickly carried out. In this way, when the box door 2 is opened and closed, even if there is a pressure difference between the inside and outside, the airflow will be restricted and buffered.

Claims

1. A marine temperature and humidity control box, comprising a box body (1) and a box door (2), characterized in that: The housing (1) is equipped with a heating device (10), a cooling device (9), a dehumidifying device (8), a gas device, a temperature sensor (12), a humidity sensor (13), a sample chamber (17), a chamber plate (14), and a PLC controller (6). The temperature sensor (12) and humidity sensor (13) are both electrically connected to the PLC controller (6). The PLC controller (6) is electrically connected to the heating device (10), cooling device (9), dehumidifying device (8) and gas device respectively through the cavity plate (14). It is used to control the heating device (10), cooling device (9), dehumidifying device (8) and gas device to work according to the temperature and humidity signals inside the box (1) in order to adjust the temperature and humidity inside the box (1). The inner top wall of the box (1) is connected to a support frame (18), and the box door (2) is connected to a receiving cavity plate (19) through the support frame (18). A constraint seal (191) is provided on one side of the upper surface of the receiving cavity plate (19), and a cylindrical shell (20) is sleeved at the connection between the constraint seal (191) and the receiving cavity plate (19). An inner sleeve shell (21) is movably inserted into the cylindrical shell (20). One end of the cylindrical shell (20) is connected to an anti-return cone pad (22), and one end of the anti-return cone pad (22) is connected to a sleeve (23). A gap is formed between the anti-return cone pad (22) and the sleeve (23), and a steel ball (24) is provided in the gap. Both the anti-return cone pad (22) and the sleeve (23) have interconnected channels inside. A spring (25) is connected between the anti-return cone pad (22) and the inner sleeve shell (21); A locking post (26) is fixedly connected to one end face of the sleeve (23). The locking post (26) is movably engaged with a support frame plate (27). The support frame plate (27) is connected with a sliding plate (28). The sliding plate (28) is slidably engaged with a slide rail (29). The box body (1) has an outlet groove (30) near the slide rail (29). The outlet groove (30) is adapted to the slide plate (28) so that the box door (2) can constrain the internal temperature and humidity environment of the box body (1) through the cylindrical shell (20), inner sleeve shell (21), anti-return cone pad (22), sleeve (23) and steel ball (24) during the sample storage and retrieval process.

2. A marine temperature and humidity control box according to claim 1, characterized in that: The gas device includes an air inlet (15), an air outlet (11), a compressor (16), and a blower (7). The air inlet (15) is located at the bottom of the housing (1) and is connected to the inside of the housing (1) through the blower (7). The air outlet (11) is located at the top of the housing (1) and is connected to the outside of the housing (1) through the blower (7). The compressor (16) is used to work with the refrigeration device (9) or the dehumidification device (8) to refrigerate or dehumidify the gas entering the housing (1).

3. A marine temperature and humidity control box according to claim 1, characterized in that: The heating device (10) is located at the rear of the box (1), and the heat source of the heating device (10) is an electric heating source. The refrigeration device (9) includes a refrigeration compressor and a refrigeration pipe. The refrigeration compressor is located at the bottom of the box (1), and the refrigeration pipe is located inside the box (1). The dehumidification device (8) includes an in-box condenser located inside the box (1). The in-box condenser is composed of several condensation pipes to reduce the humidity inside the box (1) by condensation.

4. A marine temperature and humidity control box according to claim 1, characterized in that: The door (2) is located on the front side of the box body (1), and the door (2) is composed of several small doors with handles. Each of the small doors is provided with an observation window. The sample chamber (17) is located inside the box body (1) and is correspondingly provided with the door (2). The sample chambers (17) are separated by stainless steel plates, and several small holes are provided on the stainless steel plate behind the sample chambers (17). The sample chambers (17) are connected to the internal environment of the box body (1) through the small holes.

5. A marine temperature and humidity control box according to claim 1, characterized in that: The outer arc surface of the cylindrical shell (20) is configured as a straight cylinder structure on one side and a conical cylinder structure on the other side. The straight cylinder structure is used to cooperate with the receiving cavity plate (19) and the constraint sealing edge (191) for positioning. The conical cylinder structure is used to cooperate with the anti-backflow cone pad (22) to form a flow guiding and anti-backflow structure.

6. A marine temperature and humidity control box according to claim 5, characterized in that: The cylindrical shell (20) has a pressing end (201) in the middle of the inner arc surface. One end of the inner sleeve shell (21) is movably inserted into the pressing end (201). The outer arc surface of the inner sleeve shell (21) is provided with an anti-backflow edge (211) near the straight cylinder structure. The anti-backflow edge (211) cooperates with the inner wall of the cylindrical shell (20) to block the airflow or moisture in the box (1) from flowing in the opposite direction.

7. A marine temperature and humidity control box according to claim 1, characterized in that: The anti-backflow cone pad (22) is provided with a flow guide rod (221) at one end near the inner sleeve shell (21). The inner arc surface of the inner sleeve shell (21) is provided with a rotary channel (212). The flow guide rod (221) is provided in correspondence with the rotary channel (212) to guide the airflow along the rotary channel (212). The front end of the anti-backflow cone pad (22) is provided with a sealing wing section (222). The sleeve (23) is snapped onto the outer arc surface of the sealing wing section (222).

8. A marine temperature and humidity control box according to claim 7, characterized in that: The bottom of the outer arc surface of the sleeve (23) is provided with a vent hole (231), which is connected to the channel inside the sleeve (23). The steel ball (24) is set in the gap between the anti-backflow cone pad (22) and the sleeve (23), and can open or close the channel or limit the flow under the action of airflow or the reset action of the spring (25) to form a one-way anti-backflow structure.

9. A marine temperature and humidity control box according to claim 1, characterized in that: The outer arc surface of the locking pin (26) is provided with a tongue lock (261), the tongue lock (261) is sloping, the support frame plate (27) is U-shaped, the locking pin (26) is movably engaged with the support frame plate (27) through the tongue lock (261), the upper surface of the support frame plate (27) is provided with a connecting edge (271), the sliding plate (28) is fixedly installed on the surface of the connecting edge (271), the slide rail (29) slides and engages with the sliding plate (28), so that the sliding plate (28) can extend or retract along the direction of the outlet groove (30), thereby driving the locking pin (26), the sleeve (23), the anti-return cone pad (22) and the inner sleeve shell (21) to move relative to the box (1).

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