A marine ventilation louvre

Abstract

The utility model discloses a marine ventilation opening louver relates to marine ventilation technical field, including window frame, a plurality of upper and lower parallel arrangement and around horizontal shaft rotation installation on the blade of window frame and the control system of drive each blade rotation, the window frame is located between the upper and lower adjacent blade and is provided with the overlapping piece, the overlapping piece is the long strip structure of left and right extension, and its left and right sides are fixed on the window frame riser respectively, the section of overlapping piece is "s" shape, the top of blade is provided with the top overlapping edge of bending to the cabin outside side, the bottom of blade is provided with the bottom overlapping edge of bending to the cabin inside side, and the bottom overlapping edge inserts into the top limiting slot of the overlapping piece of bottom portion, and with top limiting slot abuts, and the top overlapping edge inserts into the bottom limiting slot of the overlapping piece of top, and with bottom limiting slot abuts. Avoided the direct friction between the adjacent blade, reduced the abrasion of blade surface because of long -term friction, prolonged the service life of louver, reduced the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of marine ventilation technology, and in particular to a marine ventilation louver. Background Technology

[0002] Marine louvers are primarily installed on ships for ventilation and heat dissipation, while also needing to be weatherproof to prevent seawater and rainwater from entering the ship and ensuring the safety of equipment and personnel. Early marine louvers were manually operated, with a handwheel turning to open and close them. With technological advancements, electric and pneumatic louvers have become more common. These louvers typically use a central lever, with the up-and-down movement of the lever controlling the opening and closing of the louvers.

[0003] In existing louver structures, an overlapping design between adjacent blades is typically used to achieve a good seal. However, this structure has some disadvantages. For example, during the opening and closing of the louvers, the friction between adjacent blades not only generates significant noise, affecting the working environment inside the ship, but also leads to wear on the blade surface over time, reducing the louver's lifespan and increasing maintenance costs. Furthermore, when subjected to significant external forces (such as strong winds or wave impacts), the overlapping structure is prone to jamming or even deformation between the blades, affecting the normal opening and closing of the louvers and consequently impacting ventilation and heat dissipation within the ship. Utility Model Content

[0004] The purpose of this invention is to provide a marine ventilation louver to solve the problems of high noise, easy wear, and easy jamming and deformation caused by the overlapping of adjacent blades in the prior art, thereby improving the sealing performance, service life and reliability of the louver.

[0005] To achieve the above objectives, this utility model provides a marine ventilation louver, comprising a window frame, multiple blades arranged vertically and horizontally and rotatably mounted on the window frame around a horizontal axis, and a control system for driving the rotation of each blade; an overlap member is provided between adjacent blades on the window frame; the overlap member is a long strip structure extending horizontally, with its left and right sides respectively fixed to the window frame uprights; the cross-section of the overlap member is "S"-shaped, that is, it has a top limiting groove with an opening facing outwards from the cabin and a bottom limiting groove with an opening facing inwards from the cabin; the top of the blade has a top overlap edge bent outwards from the cabin; the bottom of the blade has a bottom overlap edge bent inwards from the cabin; when the blade closes the ventilation opening, the bottom overlap edge is inserted into the top limiting groove of the bottom overlap member and abuts against the top limiting groove; the top overlap edge is inserted into the bottom limiting groove of the top overlap member and abuts against the bottom limiting groove.

[0006] With the above structure, an "S"-shaped overlapping member is installed on the window frame between adjacent upper and lower blades, allowing the top and bottom overlapping edges of the blades to be inserted into corresponding limiting grooves for contact. This design avoids direct friction between adjacent blades, effectively reducing noise generated during the opening and closing of the louvers and improving the working environment inside the ship. It also reduces wear on the blade surface caused by long-term friction, extending the service life of the louvers and lowering maintenance costs. Furthermore, it improves sealing performance, better preventing seawater and rainwater from entering the ship and ensuring the safety of equipment and personnel inside.

[0007] Preferably, rubber strips are fixedly installed in the top and bottom limiting grooves at the corresponding overlapping edges. The rubber strips have good elasticity and sealing properties, further enhancing the sealing effect between the blades and the overlapping parts, and more effectively preventing seawater and rainwater from entering the ship. At the same time, the rubber strips also act as a buffer, reducing collisions and wear between the blades and the overlapping parts, further protecting the louver structure and extending its service life.

[0008] Preferably, the connecting edge between the top limiting groove and the bottom limiting groove is a sloped surface that slopes downwards from inside the cabin to outside. When encountering rainwater or other liquids, this sloped surface design can guide the liquid to flow smoothly down, preventing liquid from accumulating on the joint, thereby reducing the impact of liquid on the sealing performance of the louvers and ensuring that the louvers maintain a good sealing condition under various weather conditions.

[0009] Preferably, an arc-shaped groove is provided on the upright plate around the central axis of the blade in the circumferential direction; a limiting shaft is provided on the left and right sides of the blade, and a limiting wheel is rotatably mounted on the limiting shaft; the limiting wheel is slidably mounted in the arc-shaped groove; the starting end of the arc-shaped groove corresponds to the closed ventilation opening of the blade, and the ending end corresponds to the maximum opening angle of the blade. Through this limiting structure, the opening and closing angles of the blade can be precisely controlled, preventing excessive rotation or jamming of the blade, and improving the operational stability and reliability of the louver; at the same time, when the blade is at the maximum opening angle, the arc-shaped groove and the limiting wheel can share the weight of the blade and external forces such as wind pressure and vibration, reducing stress concentration on the central axis and bearings, and extending the service life of related components.

[0010] Preferably, each central axis has two arc-shaped grooves arranged circumferentially, with the two arc-shaped grooves distributed at a 180° angle; each arc-shaped groove corresponds to a limiting wheel. This design of double arc-shaped grooves and double limiting wheels further enhances the limiting effect, making the rotation of the blades smoother and more accurate, reducing the shaking and deviation during the blade rotation process, and improving the overall performance and stability of the louvers.

[0011] Preferably, a drainage channel is provided at the lowest point of the arc-shaped groove on the same side of the upright plate; a water collection channel extending vertically downward is provided on one side of the upright plate; the drainage channel extends downward at an angle and connects to the water collection channel; a drain outlet is provided at the bottom of the window frame; and the water collection channel connects to the drain outlet. When rainwater or other liquids enter the louvers, the liquid can flow into the water collection channel through the drainage channel and then be discharged through the drain outlet, effectively preventing liquid from accumulating inside the louvers, avoiding any impact on the normal use and sealing performance of the louvers, and ensuring the normal operation of the louvers in humid environments.

[0012] Preferably, the top wall of the top limiting groove is an upwardly extending slope, and the bottom overlapping edge is a downwardly extending slope that is attached to it; the bottom wall of the bottom limiting groove is a downwardly extending slope, and the top overlapping edge is an upwardly extending slope that is attached to it. This optimized slope design allows for a tighter fit between the blade and the overlapping part, increasing the contact area between them, further improving the sealing performance, and facilitating the smooth discharge of liquid, preventing liquid from accumulating at the contact area and affecting the sealing effect.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are: This utility model, a marine ventilation louver, solves the problems of high noise, easy wear, and easy jamming and deformation caused by the overlapping of adjacent blades in the prior art. This utility model uses an "S"-shaped cross-section overlapping member on the window frame between the upper and lower adjacent blades, allowing the top and bottom overlapping edges of the blades to insert into corresponding limiting grooves for abutment. This design avoids direct friction between adjacent blades, effectively reducing noise generated during the opening and closing of the louver and improving the working environment inside the ship. It also reduces wear on the blade surface caused by long-term friction, extending the service life of the louver and reducing maintenance costs. Furthermore, it improves sealing performance, better preventing seawater and rainwater from entering the ship and ensuring the safety of equipment and personnel inside. Attached Figure Description

[0014] Figure 1 This is a side sectional view of a marine ventilation louver according to the present invention; Figure 2 yes Figure 1 Rear view; Figure 3 yes Figure 1 A magnified view of part A in the image; Figure 4 This is a side sectional view of the marine ventilation louver in Embodiment 2 of this utility model; Figure 5 yes Figure 4 A magnified view of part B in the image; Figure 6 yes Figure 4 A magnified view of part C.

[0015] In the diagram, 1 is the window frame, 11 is the arc groove, 12 is the drainage groove, 13 is the water collection groove, 14 is the drain outlet, 2 is the blade, 21 is the top overlapping edge, 22 is the bottom overlapping edge, 23 is the limiting wheel, 3 is the overlapping piece, 31 is the top limiting groove, 32 is the bottom limiting groove, 33 is the connecting edge, and 4 is the rubber strip. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] The orientations mentioned in this specification are based on the orientation of the marine ventilation louver of this utility model during normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0018] Example 1: like Figure 1 As shown, a marine ventilation louver includes a window frame 1, multiple blades 2 arranged vertically and parallel to each other and rotatably mounted on the window frame 1 around a horizontal axis, and a control system for driving the rotation of each blade 2.

[0019] like Figure 1 and Figure 2 As shown, all blades 2 are connected by connecting rods, which are connected to the control system. The control system controls the raising and lowering of the connecting rods, thereby achieving simultaneous opening and closing of all blades 2. The control system is pneumatic, using a single-acting cylinder, and is a loss-of-air shut-off type. A smoke detection system is installed inside the cabin, and the smoke detection system signal is connected to a solenoid valve, which controls the opening and closing of the louver air passage. The control system also includes manual control, which is achieved by adding a winch outdoors, which drives the raising and lowering of a steel cable to realize the opening and closing of blades 2. The structure of the control system can refer to the pneumatic and manual control structure disclosed in Chinese Patent CN102493749 B. Other existing control structures can also be used, as long as they can control the normal opening and closing of blades 2; this embodiment does not limit this.

[0020] like Figure 3 As shown, an overlap member 3 is provided on the window frame 1 between adjacent blades 2. The overlap member 3 is a long strip structure extending left and right, with its left and right sides fixed to the vertical plate of the window frame 1 respectively. This long strip structure extending left and right can provide stable and reliable support and connection for the blades 2.

[0021] The cross-section of the overlapping member 3 is "S"-shaped, meaning it has a top limiting groove 31 opening outwards from the hull and a bottom limiting groove 32 opening inwards from the hull. This "S"-shaped cross-section design cleverly achieves the sealing and positioning functions between the blade 2 and the overlapping member 3. The top of the blade 2 has a top overlapping edge 21 bent outwards from the hull; the bottom of the blade 2 has a bottom overlapping edge 22 bent inwards from the hull. When the blade 2 closes the vent, the bottom overlapping edge 22 inserts into the top limiting groove 31 of the overlapping member 3 at its bottom and abuts against the top limiting groove 31; the top overlapping edge 21 inserts into the bottom limiting groove 32 of the overlapping member 3 at its top and abuts against the bottom limiting groove 32. This overlapping method avoids direct friction between adjacent blades 2, reduces noise and wear, and improves sealing performance.

[0022] Preferably, a rubber strip 4 is fixedly installed in the top limiting groove 31 and the bottom limiting groove 32 at the corresponding overlapping edge abutment position. The rubber strip 4 is bolted or glued to the top limiting groove 31 and the bottom limiting groove 32. The rubber strip 4 has good elasticity and sealing performance, which can further enhance the sealing effect between the blade 2 and the overlapping part 3, effectively prevent seawater, rainwater, etc. from entering the ship, and at the same time, it can also play a buffering role, reducing the collision and wear between the blade 2 and the overlapping part 3.

[0023] Preferably, the connecting edge 33 between the top limiting groove 31 and the bottom limiting groove 32 is a sloping surface that slopes downwards from inside the cabin to outside. The sloping angle of the connecting edge 33 is 10°~15°. This sloping surface design can guide the liquid to flow smoothly when encountering rainwater or other liquids, avoiding the accumulation of liquid on the overlapping part 3, thereby reducing the impact on the sealing performance of the louvers.

[0024] Example 2: This embodiment is basically the same as Embodiment 1, except that the structure of the overlapping component 3 is different.

[0025] like Figure 4 and Figure 5 As shown, in this embodiment, the top wall of the top limiting groove 31 is an upwardly extending slope, and the bottom overlapping edge 22 is a downwardly extending slope that is attached to it; the bottom wall of the bottom limiting groove 32 is a downwardly extending slope, and the top overlapping edge 21 is an upwardly extending slope that is attached to it. This optimized slope design allows for a tighter fit between the blade 2 and the overlapping member 3, increasing the direct contact area between them, further improving the sealing performance, and facilitating the smooth discharge of liquid.

[0026] Example 3: This embodiment is a further improvement on Embodiment 1 or Embodiment 2. For example... Figure 4As shown, an arc-shaped groove 11 is provided on the upright plate around the central axis of the blade 2. Limiting shafts are provided on the left and right sides of the blade 2, and limiting wheels 23 are rotatably mounted on the limiting shafts. The limiting wheels 23 are slidably mounted within the arc-shaped groove 11. The starting end of the arc-shaped groove 11 corresponds to the closed ventilation opening of the blade 2, and the ending end corresponds to the maximum opening angle of the blade 2. This limiting structure allows for precise control of the opening and closing angles of the blade 2, preventing excessive rotation or jamming, and improving the operational stability and reliability of the louver. Simultaneously, at the maximum opening angle, the arc-shaped groove 11 and the limiting wheels 23 share the weight of the blade 2 and external forces such as wind pressure and vibration, reducing stress concentration on the central axis and bearings.

[0027] Furthermore, each central axis is provided with two arc-shaped grooves 11 in the circumferential direction, and the two arc-shaped grooves 11 are distributed at a 180° angle; each arc-shaped groove 11 corresponds to a limiting wheel 23. This design of double arc-shaped grooves 11 and double limiting wheels 23 further enhances the limiting effect, making the rotation of blade 2 more stable and accurate.

[0028] Furthermore, such as Figure 6 As shown, a drainage channel 12 is provided at the lowest position of the arc-shaped groove 11 on the same side of the upright plate; a water collection channel 13 extending vertically downward is provided on one side of the upright plate; the drainage channel 12 extends downward at an angle and connects to the water collection channel 13; a drain outlet 14 is provided at the bottom of the window frame 1; the water collection channel 13 connects to the drain outlet 14. When rainwater or other liquids enter the louver, the liquid can flow into the water collection channel 13 through the drainage channel 12, and then be discharged through the drain outlet 14, effectively preventing liquid from accumulating inside the louver and avoiding affecting the normal use and sealing performance of the louver.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

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