Marine invisible ventilation opening

Abstract

The utility model discloses a marine invisible ventilation opening, which relates to the technical field of marine ventilation openings and comprises a mounting frame, an exhaust frame is fixedly mounted in the middle of the inner side of the mounting frame, a mounting groove is formed in the inner side of the mounting frame, and a dustproof ventilation mechanism is slidably connected into the mounting groove. And a limiting mechanism is fixedly mounted at the upper end of the outer side of the dustproof ventilation mechanism. By the adoption of the structure, during application of the device, the stealth shielding assembly is arranged, the shielding cover of the stealth shielding assembly covers the outer side of the installation groove body and the outer side of the outlet of the exhaust frame, the shielding plate and the shielding cover are made of wave absorbing or shielding materials, the outer side of the exhaust frame can be completely covered, radar wave reflection is avoided, the probability of radar detection is greatly reduced during use, and the service life of the device is prolonged. And therefore, the stealth performance of the ship is improved, and the problem of insufficient stealth caused by exposure of an air inlet of a ventilation opening in the prior art is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of marine ventilation openings, and specifically relates to a marine stealth ventilation opening. Background Technology

[0002] With the continuous advancement of marine propulsion system technology, the demand for ventilation and heat dissipation in the engine room is increasing. As the core area of ​​the power system, the engine room generates a large amount of heat during the operation of its internal equipment. If heat dissipation is not timely and effective, it will seriously affect the normal operation and service life of the equipment. However, there is a significant contradiction between engine room ventilation and heat dissipation and the ship's stealth performance: if the ventilation opening area is too large, it will weaken the structural strength of the hull and increase the radar cross-section, making the ship easier for the enemy to detect, identify and attack within a certain range. Stealth is a key factor in ensuring that ships can detect the enemy first, strike first, and improve their survivability in naval warfare. If the opening area is too small, it will not be able to meet the ventilation and heat dissipation requirements of the compartment. Balancing heat dissipation efficiency and stealth performance has become a major challenge in ship ventilation design.

[0003] To address this issue, numerous explorations have been conducted in related technical fields. Chinese patent publication number "CN117446144A" discloses a marine stealth ventilation opening. This device includes a shell, a guide plate, and a pneumatic closing device. A U-shaped air duct is formed inside the shell. After air enters the shell through the vent, it enters the interior through the U-shaped channel and is then distributed to various ventilation shafts, or it can converge from the ventilation shafts and be discharged through the U-shaped channel. The U-shaped channel is separated by the guide plate, and the pneumatic closing device installed above the guide plate can cut off the vent in fire-fighting conditions. The inner and outer sides of the shell are coated with stealth material to reduce the radar cross-section of the channel. The ingenious design is that no louvers are set at the opening, which greatly reduces the flow resistance. At the same time, the ventilation opening adopts an inverted trapezoidal cross-section and the vent is tilted downward, which reduces the area perpendicular to the incident direction of the detection radar and reduces the radar cross-section to a certain extent.

[0004] However, the above-mentioned device still has obvious defects and shortcomings in practical applications. On the one hand, its air inlet is still exposed to the outside. Although it adopts an inverted trapezoidal cross section and places the larger side on top to reduce the area from the direction of air detection radar, some air inlets are still exposed, which cannot completely avoid detection by air detection radar. There is room for improvement in stealth performance. On the other hand, its filter screen is inconvenient to disassemble and install. Ships usually have a large number of small ventilation openings. After long-term use, dust and impurities are easily attached to the filter screen, which requires regular cleaning and maintenance. The cumbersome design of the filter screen of this device will bring great inconvenience to the subsequent maintenance work of the ship. Especially for the numerous small ventilation openings, this inconvenience will significantly increase the workload and difficulty of maintenance, and affect the maintenance efficiency of the ship. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a stealthy marine ventilation opening to solve the problems raised in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A marine stealth ventilation port includes a mounting frame, an exhaust frame fixedly mounted on the inner middle of the mounting frame, a mounting groove opened on the inner side of the mounting frame, a dustproof ventilation mechanism slidably connected inside the mounting groove, and a limiting mechanism fixedly mounted on the upper outer side of the dustproof ventilation mechanism, the end of the limiting mechanism penetrating the dustproof ventilation mechanism and the exhaust frame and engaging with each other.

[0008] The dustproof ventilation mechanism includes an installation strip, which is slidably connected to both ends of the installation groove. A dustproof net is fixedly installed on the inner side of the installation strip, and the dustproof net covers the outer side of the exhaust frame. A sealing plate is fixedly installed on the top of the dustproof net, and the sealing plate covers the top of the installation groove. A stealth shielding component is fixedly installed on the outer side of the sealing plate.

[0009] As a preferred technical solution, the stealth shielding component includes a shielding cover, which is fixedly installed on the outside of the sealing plate. The shielding cover covers the outside of the mounting groove and the exhaust frame outlet, and shielding plates are fixedly installed on both sides of the inside of the shielding cover.

[0010] As a preferred technical solution, the top of the sealing plate is provided with a groove, and the bottom of the sealing plate is provided with a sealing gasket. The sealing plate seals the top of the mounting groove through the sealing gasket.

[0011] As a preferred technical solution, mounting holes are provided at all four corners of the mounting frame, and the mounting holes are countersunk holes. The outer surface edges of the mounting frame and the shielding cover are all rounded.

[0012] As a preferred technical solution, the limiting mechanism includes a locking hole and a limiting clip. The locking hole is opened on both sides of the upper end of the mounting frame away from the exhaust frame. The limiting clip is fixedly installed on both sides of the upper end of the shielding cover. The end of the limiting clip penetrates the shielding cover and is inserted into the inside of the locking hole.

[0013] As a preferred technical solution, the limiting clip includes a side plate, which is fixedly connected to the outside of the sealing plate. A concave frame is fixedly connected to the outside of the side plate, and a limiting spring is fixedly connected inside the concave frame. A push plate is fixedly installed at the end of the limiting spring, and a locking pin is fixedly installed on the side of the push plate near the mounting frame. The end of the locking pin passes through the side plate and is inserted into the inside of the locking hole.

[0014] As a preferred technical solution, a connecting shaft is fixedly connected to the outer side of the push plate, and a bridge-type handrail is fixedly installed at the end of the connecting shaft through the concave frame.

[0015] In summary, the present invention has the following main advantages:

[0016] First, during the application of this device, by setting up a stealth shielding component, the shielding cover covers the outside of the installation trough and the exhaust frame outlet. The shielding plate and shielding cover are made of wave-absorbing or shielding materials, which can completely cover the outside of the exhaust frame and avoid radar wave reflection. This significantly reduces the probability of being detected by radar during use, thereby improving the stealth performance of the ship and solving the problem of insufficient stealth caused by the exposure of the ventilation inlet in the existing technology.

[0017] Secondly, during the application of this device, by setting up a dustproof ventilation mechanism and a limiting mechanism, the dustproof ventilation mechanism is slidably connected to the installation groove through the installation strip, and is engaged with the locking pin and locking hole of the limiting mechanism. The bridge-type handrail can be pushed to realize disassembly and assembly, which makes it easy to clean or replace the dustproof screen during use, thereby improving the maintenance efficiency. This solves the problem of cumbersome disassembly and assembly and inconvenient maintenance of the filter screen in the existing device. At the same time, the sealing gasket and other structures ensure the sealing and safety of the ventilation system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the disassembled rear view structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the stealth shielding component structure of this utility model;

[0022] Figure 5 This is a utility model Figure 2 A magnified structural diagram at point A.

[0023] Reference numerals: 1. Mounting frame; 2. Exhaust frame; 3. Dustproof ventilation mechanism; 31. Mounting strip; 32. Dustproof net; 33. Sealing plate; 34. Concealed shielding assembly; 341. Shielding cover; 342. Shielding plate; 35. Groove; 4. Mounting groove; 5. Mounting hole; 6. Limiting mechanism; 61. Locking hole; 62. Limiting clip; 621. Side plate; 622. Concave frame; 623. Limiting spring; 624. Push plate; 625. Locking pin; 626. Coupling; 627. Bridge-type handrail. Detailed Implementation

[0024] Example

[0025] refer to Figures 1 to 5 This embodiment of a marine stealth ventilation port includes a mounting frame 1, an exhaust frame 2 fixedly mounted on the inner middle of the mounting frame 1, a mounting groove 4 opened on the inner side of the mounting frame 1, a dustproof ventilation mechanism 3 slidably connected inside the mounting groove 4, and a limiting mechanism 6 fixedly mounted on the upper outer side of the dustproof ventilation mechanism 3, with the end of the limiting mechanism 6 penetrating through the dustproof ventilation mechanism 3 and the exhaust frame 2 and engaging with each other.

[0026] The dustproof ventilation mechanism 3 includes a mounting strip 31, which is slidably connected to both ends of the mounting groove 4. A dustproof net 32 ​​is fixedly installed on the inner side of the mounting strip 31, covering the outer side of the exhaust frame 2. A sealing plate 33 is fixedly installed on the top of the dustproof net 32, covering the top of the mounting groove 4. A stealth shielding component 34 is fixedly installed on the outer side of the sealing plate 33. When this device is in operation, the mounting frame 1 is first fixed to the designated ventilation position on the ship through its structure. The dustproof ventilation mechanism 3 is connected to the mounting groove 4 inside the mounting frame 1 through the mounting strip 31. With the sliding connection, during installation, the locking structure of the limiting mechanism 6 fixes the dustproof ventilation mechanism 3. At this time, the dustproof net 32 ​​covers the outside of the exhaust frame 2, the sealing plate 33 covers the top of the mounting groove 4, and the concealed shielding component 34 shields the outlet of the exhaust frame 2. During ventilation, the air enters the exhaust frame 2 after being filtered by the dustproof net 32 ​​to complete air exchange. When maintenance is required, the locking of the limiting mechanism 6 is released, and the dustproof ventilation mechanism 3 can be removed from the mounting groove 4 by sliding. After cleaning or replacing the dustproof net 32, it can be reinstalled in reverse order. The whole system is easy to disassemble and repair quickly.

[0027] refer to Figures 2-4The top of the sealing plate 33 has a groove 35, and the bottom of the sealing plate 33 has a sealing gasket. The sealing plate 33 seals the top of the mounting groove 4 through the sealing gasket. Mounting holes 5 are provided at the four corners of the mounting frame 1. The mounting holes 5 are countersunk holes. The outer edges of the mounting frame 1 and the shielding cover 341 are rounded. During application, the sealing gasket at the bottom of the sealing plate 33 fits against the top of the mounting groove 4. Through the covering effect of the sealing plate 33 and the elastic deformation of the sealing gasket, the top of the mounting groove 4 is sealed, preventing unfiltered air from entering through gaps. The groove 35 on the top of the sealing plate 33... The mounting frame 1 has countersunk holes at its four corners for easy gripping and removal during disassembly and assembly of the dustproof ventilation mechanism 3, allowing for the insertion of bolts with the bolt heads embedded in the holes without protruding from the surface. The rounded corners of the outer surfaces of the mounting frame 1 and the shield 341 reduce the reflection of radar waves from the structural edges. The advantages of this design are that the sealing gaskets ensure the airtightness of the ventilation system and improve the air filtration effect. The groove 35 simplifies the disassembly and assembly of the dustproof ventilation mechanism 3. The countersunk holes avoid operational obstruction and additional radar reflection caused by protruding bolt heads. The rounded corners reduce the radar cross-section and the risk of bumps during installation and maintenance.

[0028] refer to Figures 3-5The limiting mechanism 6 includes a locking hole 61 and a limiting clip 62. The locking hole 61 is located on both sides of the upper end of the mounting frame away from the exhaust frame 2. The limiting clip 62 is fixedly installed on both sides of the upper end of the shielding cover 341. The end of the limiting clip 62 penetrates the shielding cover 341 and is inserted into the inner side of the locking hole 61. The limiting clip 62 includes a side plate 621, which is fixedly connected to the outer side of the sealing plate 33. A concave frame 622 is fixedly connected to the outer side of the side plate 621, and a limiting clip 622 is fixedly connected inside the concave frame 622. Spring 623, a push plate 624 is fixedly installed at the end of the limiting spring 623, and a locking pin 625 is fixedly installed on the side of the push plate 624 near the mounting frame 1. The end of the locking pin 625 passes through the side plate 621 and is inserted into the inner side of the locking hole 61. A connecting shaft 626 is fixedly connected to the outer side of the push plate 624. The end of the connecting shaft 626 passes through the concave frame 622 and is fixedly installed with a bridge-type handrail frame 627. During the application of this device, when the dustproof ventilation mechanism 3 is installed, the bridge-type handrail frame 627 is pushed, and the connecting shaft 626... The push plate 624 compresses the limiting spring 623 inside the concave frame 622, causing the locking pin 625 to retract into the inside of the side plate 621. After the dustproof ventilation mechanism 3 is installed in place, the bridge-type handrail frame 627 is released, the limiting spring 623 returns to its original position, and pushes the push plate 624. The locking pin 625 passes through the side plate 621 and inserts into the locking hole 61 of the mounting frame, thus fixing the dustproof ventilation mechanism 3 to the mounting frame 1. When disassembling, push the bridge-type handrail frame 627 again to disengage the locking pin 625 from the locking hole 61, and the dustproof ventilation fan can be removed. When the structure 3 is removed, during use, the elastic force of the limiting spring 623 enables the locking pin 625 to automatically engage with the locking hole 61. The dustproof ventilation mechanism 3 can be disassembled and assembled without additional tools, making the operation convenient and efficient. This greatly simplifies the cleaning and replacement process of the dustproof net 32, and is especially suitable for the maintenance of a large number of ventilation openings on ships, reducing the workload and time cost of maintenance. At the same time, the locking structure is stable and reliable, ensuring that the dustproof ventilation mechanism 3 remains firmly installed in the vibration environment of ship navigation.

[0029] refer to Figures 1-4The stealth shielding component 34 includes a shielding cover 341, which is fixedly installed on the outside of the sealing plate 33. The shielding cover 341 covers the outside of the mounting groove 4 and the exhaust frame 2 outlet. Shielding plates 342 are fixedly installed on both sides of the inside of the shielding cover 341. Both the shielding plates 342 and the shielding cover 341 are made of wave-absorbing material. Specifically, the shielding plates 342 and the shielding cover 341 can be made of ferrite wave-absorbing plates, carbon fiber composite wave-absorbing plates, conductive polymer wave-absorbing plates, metal shielding plates 342, metallized fabric shielding plates 342, etc. They achieve isolation and reduction of radar detection through their respective wave-absorbing or shielding characteristics. During the application of this device, the shielding cover 341 is fixed on the outside of the sealing plate 33, covering the mounting groove 4 and the exhaust frame 2 outlet. On the outside, the shielding plates 342 and shielding covers 341 on both sides of the interior work together. Since both are made of radar-absorbing or shielding materials, the ferrite radar-absorbing plates, carbon fiber composite radar-absorbing plates, and conductive polymer radar-absorbing plates convert radar wave energy into heat energy through radar absorption properties. The metal shielding plates 342 and metallized fabric shielding plates 342 reflect radar waves by means of shielding properties, thereby achieving isolation and reduction of radar detection. Its advantages are that it can completely cover the outside of the exhaust frame 2, avoiding radar waves from directly illuminating the internal structure of the ventilation opening. Compared with the exposed air inlet of the existing device, it greatly reduces radar wave reflection and reduces the probability of being detected by radar. Moreover, the selection of various radar-absorbing or shielding materials can adapt to different radar band environments and improve the adaptability of the ship's stealth performance.

[0030] Operating principle and advantages: During application, when the device is installed, bolts are inserted through the countersunk holes at the four corners of the mounting frame 1 to fix the entire unit in the designated ventilation position on the ship. The rounded corners of the outer surface of the mounting frame 1 can avoid bumps during installation and maintenance. Before use, the dustproof ventilation mechanism 3 is installed through the limiting mechanism 6: Pushing the bridge-type handrail 627, the connecting shaft 626 drives the push plate 624 to compress the limiting spring 623 in the concave frame 622, causing the locking pin 625 to retract into the side plate 621 and the inner side of the concave frame 622. The mounting strip 31 is aligned with the mounting groove 4 of the mounting frame 1 and slid in until the sealing gasket at the bottom of the sealing plate 33 is in contact with the top of the mounting groove 4. The bridge-type handrail 627 is then released, and the limiting spring 623 returns to its original position, pushing the push plate. 624, the pin 625 penetrates the side plate 621 and is inserted into the locking hole 61 of the mounting frame 1 to fix the dustproof ventilation mechanism 3. At this time, the dustproof net 32 ​​covers the outside of the exhaust frame 2, and the sealing plate 33 seals the top of the mounting groove 4 through the sealing gasket. During ventilation, the air enters the exhaust frame 2 after being filtered by the dustproof net 32, and then the air inside and outside the cabin is exchanged through the exhaust frame 2. When it is necessary to clean or replace the dustproof net 32, push the bridge handrail 627 again to make the pin 625 disengage from the locking hole 61, and pull the dustproof ventilation mechanism 3 out of the mounting groove 4 through the slot 35. The shielding cover 341 of the stealth shielding component 34 covers the outside of the mounting groove 4 and the exhaust frame 2 outlet. The shielding cover 341 and the shielding plates 342 on both sides inside work together to reduce the radar cross section.

[0031] During its application, this device addresses the issue of insufficient stealth caused by exposed air inlets in existing technologies. This is achieved through a stealth shielding component 34, which uses a shielding cover 341 to cover the outer side of the mounting trough 4 and the exhaust frame 2 outlet. The shielding plate 342 and the shielding cover 341 are made of wave-absorbing or shielding materials. Utilizing their wave-absorbing or shielding properties, they completely cover the outer side of the exhaust frame 2, preventing radar wave reflection. Compared to the exposed air inlets of existing devices, this significantly reduces the probability of radar detection and addresses the issue of cumbersome filter installation and removal. The dustproof ventilation mechanism 3 is slidably connected to the mounting groove 4 via the mounting strip 31, and engages with the locking pin 625 of the limiting mechanism 6 and the locking hole 61. It can be disassembled and assembled simply by pushing the bridge-type handrail 627, which solves the problem of inconvenient maintenance of the filter screen in the existing device. In other structures, the sealing gasket at the bottom of the sealing plate 33 enhances the sealing of the top of the mounting groove 4 to prevent unfiltered air from entering; the countersunk hole prevents the head of the mounting bolt from protruding, avoiding affecting the appearance and operation; the rounded corners reduce the reflection of radar waves by the structure and improve the safety of use.

[0032] Meanwhile, the device effectively reduces the radar cross section and improves the ship's stealth performance through the radar-absorbing or shielding material of the stealth shielding component 34. It solves the defect of the exposed air inlet of the existing device. The sliding connection of the dustproof ventilation mechanism 3 and the quick snap-fit ​​design of the limiting mechanism 6 make the dustproof net 32 ​​easy to install and remove, reducing the workload of maintenance. It is especially suitable for the numerous small ventilation openings on the ship, improving maintenance efficiency. The sealing gasket ensures the airtightness of the ventilation system, ensuring that the air enters after being filtered by the dustproof net 32, improving the ventilation quality. The countersunk hole and rounded corner design not only ensures the stability of the installation, but also reduces additional radar reflection sources, further optimizing the stealth effect. The overall structure takes into account ventilation and heat dissipation, stealth performance and maintenance convenience, meeting the use requirements of the ship's engine room.

[0033] Mounting frame 1 is 800-1200mm long, 400-600mm wide, and 5-8mm thick; exhaust frame 2 is adapted to the inner side of mounting frame 1, with ventilation holes of 10-15mm in diameter and 20-30mm in spacing; mounting groove 4 is 30-50mm deep and 20-30mm wide; the mounting strip 31 of dustproof ventilation mechanism 3 is 18-28mm thick, the dustproof mesh 32 has a hole diameter of 0.5-1mm, the sealing plate 33 is 8-12mm thick, and the sealing gasket is 3-5mm thick. The shield 341 has a thickness of 10-15mm, the shielding plate 342 has a thickness of 5-8mm, the height of both is the same as that of the mounting frame 1, and the width is 20-30mm larger than that of the mounting frame 1. The diameter of the locking hole 61 of the limiting mechanism 6 is 8-12mm, the diameter of the limiting spring 623 is 3-5mm, the length is 40-60mm, the diameter of the locking pin 625 is adapted to the locking hole 61, and the length is 20-30mm. The length of the bridge-type handrail 627 is 50-80mm, the diameter of the mounting hole 5 is 10-14mm, and the depth of the countersunk hole is 5-8mm.

Claims

1. A marine stealth ventilation opening, characterized in that: The system includes an installation frame (1), an exhaust frame (2) is fixedly installed in the middle of the inner side of the installation frame (1), an installation groove (4) is opened in the inner side of the installation frame (1), a dustproof ventilation mechanism (3) is slidably connected inside the installation groove (4), a limiting mechanism (6) is fixedly installed on the upper outer side of the dustproof ventilation mechanism (3), and the end of the limiting mechanism (6) passes through the dustproof ventilation mechanism (3) and the exhaust frame (2) and is interlocked with each other. The dustproof ventilation mechanism (3) includes an installation strip (31), which is slidably connected to both ends of the installation groove (4). A dustproof net (32) is fixedly installed on the inner side of the installation strip (31), and the dustproof net (32) covers the outer side of the exhaust frame (2). A sealing plate (33) is fixedly installed on the top of the dustproof net (32), and the sealing plate (33) covers the top of the installation groove (4). A stealth shielding component (34) is fixedly installed on the outer side of the sealing plate (33).

2. The marine stealth ventilation opening according to claim 1, characterized in that: The stealth shielding assembly (34) includes a shielding cover (341), which is fixedly installed on the outside of the sealing plate (33), and shielding plates (342) are fixedly installed on both sides inside the shielding cover (341).

3. A marine stealth ventilation opening according to claim 1, characterized in that: The top of the sealing plate (33) is provided with a groove (35), and the bottom of the sealing plate (33) is provided with a sealing gasket. The sealing plate (33) seals the top of the mounting groove (4) through the sealing gasket.

4. A marine stealth ventilation opening according to claim 2, characterized in that: Mounting holes (5) are provided at the four corners of the mounting frame (1). The mounting holes (5) are countersunk holes. The outer surface corners of the mounting frame (1) and the shield (341) are rounded.

5. A marine stealth ventilation opening according to claim 2, characterized in that: The limiting mechanism (6) includes a locking hole (61) and a limiting clip (62). The locking hole (61) is opened on both sides of the upper end of the mounting frame away from the exhaust frame (2). The limiting clip (62) is fixedly installed on both sides of the upper end of the shielding cover (341). The end of the limiting clip (62) penetrates the shielding cover (341) and is inserted into the inside of the locking hole (61).

6. A marine stealth ventilation opening according to claim 5, characterized in that: The limiting clip (62) includes a side plate (621), which is fixedly connected to the outside of the sealing plate (33). A concave frame (622) is fixedly connected to the outside of the side plate (621). A limiting spring (623) is fixedly connected inside the concave frame (622). A push plate (624) is fixedly installed at the end of the limiting spring (623). A locking pin (625) is fixedly installed on the side of the push plate (624) near the mounting frame (1). The end of the locking pin (625) passes through the side plate (621) and is inserted into the inside of the locking hole (61).

7. A marine stealth ventilation opening according to claim 6, characterized in that: A connecting shaft (626) is fixedly connected to the outside of the push plate (624), and a bridge-type handrail (627) is fixedly installed at the end of the connecting shaft (626) through the concave frame (622).

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