NYK Line shutters with heat retention and noise reduction functions
The shutter with aluminum fiber plates and foamed particle balls addresses the challenge of simultaneous sound absorption and heat insulation in cruise ships, achieving noise reduction and heat retention with integrated solar power generation.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- JIANGSU UNIV OF SCI & TECH
- Filing Date
- 2024-04-07
- Publication Date
- 2026-05-19
AI Technical Summary
Conventional shutter materials in cruise ships fail to simultaneously provide effective shading, sound absorption, and heat insulation, especially in marine environments with varying temperatures and noise interference.
The shutter incorporates aluminum fiber sound-absorbing plates with uniformly arranged circular through-holes containing foamed particle sound-absorbing balls made from specific materials, and is covered with a carbon fiber wave mesh, with polycrystalline rods for solar power generation.
The solution achieves noise reduction by 10-15 dB and enhances heat retention, suitable for marine environments with varying climates, while also generating solar power.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of heat-insulating and sound-insulating materials, and particularly to a shutter for a cruise ship having heat-insulating and noise-reducing functions.
Background Art
[0002] With the development of industrial production, transportation, and urban construction, and the continuous increase in population density, environmental noise has a growing impact on human life and has already become one of the main public nuisances polluting the human living environment. Therefore, the sound-insulating performance of the outer windows of buildings directly affects the quality of human life.
[0003] In a cruise ship, the functions of shading, heat insulation, and sound insulation of doors and windows occupy an important position. This is because more than 50% of the energy consumption of the cruise ship is due to the heating and ventilation system, and most of this is energy loss through doors and windows. Currently, the shutter structure used in cruise ships is similar to that of ordinary building shutters and only has a shading function. However, when sailing in a marine environment, the cruise ship faces interference from external noises such as sea waves, strong winds, and siren sounds, and also needs to cope with challenges such as a relatively large temperature difference between day and night and sudden climate changes. Therefore, conventional shutter materials cannot simultaneously have the effects of shading, sound absorption / sound insulation, and heat insulation.
Summary of the Invention
Problems to be Solved by the Invention
[0004] Regarding the object of the invention, the object of the present invention is to provide a shutter for a cruise ship having a heat-insulating and noise-reducing function, in which in the closed state, the shutter blades have a heat-insulating and heat-blocking effect and reduce the energy loss of the heating and ventilation system of the cruise ship.
Means for Solving the Problems
[0005] Regarding the proposed technology, in order to achieve the above objective, the shutter for NYK lines having heat retention and noise reduction functions as described in the present invention has aluminum fiber sound-absorbing plates as the blades of the shutter, and multiple sets of uniformly arranged circular through-holes are provided in the aluminum fiber sound-absorbing plates, and foamed particle sound-absorbing balls are fitted into the circular through-holes, and the foamed particle sound-absorbing balls consist of 90 to 105 parts HB polymer cement type JS-II, 4 to 6 parts carbon powder, 2 to 3 parts wood dust powder, 4 to 6 parts 9003-35-4 heat-resistant phenolic resin, 6 to 7 parts heat-resistant glass microspheres, 9 to 11 parts ultrafine inorganic rock wool fibers, 145 to 155 parts clean distilled water, and 48 to 52 parts AC sound-insulating material foaming agent.
[0006] Preferably, the foamed particle sound-absorbing ball consists of 100 parts HB polymer cement-based JS-II type, 5 parts carbon powder, 2 parts wood dust powder, 5 parts 9003-35-4 heat-resistant phenolic resin, 6.7 parts heat-resistant glass microspheres, 10 parts ultrafine inorganic rock wool fibers, 150 parts clean distilled water, and 50 parts AC sound-insulating material foaming agent.
[0007] The aforementioned aluminum fiber sound-absorbing board is made by placing a layer of aluminum fiber felt in the center of two types of aluminum mesh boards with different mesh hole sizes, and then rolling it into a thin plate with a thickness of 1.0 to 2.5 mm using a roller mill.
[0008] The process for producing the aforementioned foamed particle sound-absorbing ball involves sending the specified proportions of cement, carbon powder, wood chips, phenolic resin, glass microspheres, rock wool fibers, and water to a pulper and uniformly mixing them into a paste, adding a foaming agent to create a cement foaming agent, placing the cement foaming agent in a model, and allowing it to harden in a hardening chamber to form a raw base. The process includes wet cutting of the raw material, creating a cutting unit with six, five, or three peeling surfaces, and allowing the cut raw material to harden and remain moist for 7 to 10 days until it is naturally dried to become the final product.
[0009] The surface of the foamed particle sound-absorbing ball is divided into four regions by carbon fibers with a diameter of 1 mm to 1.5 mm, and the foamed particle sound-absorbing ball is fixed to the circular through-holes of the aluminum fiber sound-absorbing plate using the carbon fibers at both ends of its diameter.
[0010] The surface of the foam particle sound-absorbing ball is covered with a carbon fiber wave mesh.
[0011] A liquid sealant is applied between the foamed particle sound-absorbing ball and the aluminum fiber sound-absorbing plate.
[0012] After the shutter blades are completely closed, multiple sets of polycrystalline rods for solar power generation are attached to the blades facing outwards. [Effects of the Invention]
[0013] Regarding the beneficial effects, the present invention has the following advantages: Firstly, it utilizes a feather made of aluminum fiber sound-absorbing plate to absorb the energy of incident sound waves, thereby achieving noise reduction and heat retention effects; secondly, it is lightweight, has high strength, and is suitable for long-term use in marine environments with varying climates; and thirdly, the foamed particle sound-absorbing ball produced by the present invention has a special void structure, which effectively absorbs the energy of incident sound waves through the viscous resistance of the air within the voids, and converts and dissipates the sound energy into thermal energy, thereby achieving a heat retention effect. [Brief explanation of the drawing]
[0014] [Figure 1] Figure 1 is a schematic diagram of the shutter structure. [Figure 2] Figure 2 shows a single sound-absorbing ball whose surface is covered with a carbon fiber wave mesh. [Figure 3] Figure 3 shows an aluminum fiber sound-absorbing panel into which foam particle sound-absorbing balls are embedded. [Modes for carrying out the invention]
[0015] The technical aspects of the present invention will be described in detail below with reference to the drawings and embodiments.
[0016] As shown in Figure 1, the NYK shutter with heat retention and noise reduction functions described in the present invention has a shutter blade in which a layer of aluminum fiber felt is placed in the center of two types of aluminum mesh plates with different mesh hole sizes, and rolled by a roller mill into an aluminum fiber sound-absorbing plate with a thickness of 1.0 to 2.5 mm. Multiple sets of uniformly arranged circular through holes are provided in the aluminum fiber sound-absorbing plate, with the spacing between adjacent circular through holes being 10 mm to 15 mm, and foam particle sound-absorbing balls are fitted into the circular through holes, as shown in Figure 2.
[0017] As shown in Figure 3, the foamed particle sound-absorbing ball is covered with a carbon fiber wave mesh, and its surface is divided into four regions by carbon fibers with a diameter of 1 mm to 1.5 mm. The foamed particle sound-absorbing ball is fixed to the circular through-holes of the aluminum fiber sound-absorbing plate using the carbon fibers at both ends of its diameter. A liquid sealant is applied between the foamed particle sound-absorbing ball and the aluminum fiber sound-absorbing plate.
[0018] After the shutter blades are completely closed, multiple sets of polycrystalline rods for solar power generation are further attached to the blades facing outwards.
[0019] The present invention further provides suitable components and manufacturing methods for foamed particle sound-absorbing balls. The foamed particle sound-absorbing ball consists of 100 parts HB polymer cement-based JS-II type, 5 parts carbon powder, 2 parts wood dust powder, 5 parts 9003-35-4 heat-resistant phenolic resin, 6.7 parts heat-resistant glass microspheres, 10 parts ultrafine inorganic rock wool fibers, 150 parts clean distilled water, and 50 parts AC sound-insulating material foaming agent.
[0020] The process for producing the aforementioned foamed particle sound-absorbing ball involves sending the specified proportions of cement, carbon powder, wood chips, phenolic resin, glass microspheres, rock wool fibers, and water to a pulper and uniformly mixing them into a paste, adding a foaming agent to create a cement foaming agent, placing the cement foaming agent in a model, and allowing it to harden in a hardening chamber to form a raw base. The process includes wet cutting of the raw material, creating a cutting unit with six, five, or three peeling surfaces, and allowing the cut raw material to harden and remain moist for 7 to 10 days until it is naturally dried to become the final product.
[0021] By making the cutting unit have six, five, or three peeling surfaces, the sound-absorbing balls have multiple non-continuous surfaces, which prevents the occurrence of spherical resonance during the noise absorption process and allows for the formation of more sound-absorbing voids, thus absorbing more noise from the outside. Wet cutting the raw material into multiple units ensures better material strength. From a mechanical standpoint, wet cutting ensures the physical properties of the material, such as the elastic modulus and yield strength, and results in better strength expression after drying. At the same time, cutting into multiple units allows the material to receive external forces in separate parts, reducing the occurrence of physical damage to the material due to external forces, such as cracking or detachment. Therefore, wet cutting the raw material into multiple units is a very effective measure for improving material performance and reducing damage.
[0022] In the manufacturing process of foamed particle sound-absorbing balls, each component plays the following roles: HB polymer cement type JS-II serves as the main base material, providing the structure and rigidity of the sphere; carbon powder increases the sound-absorbing performance of the sound-absorbing ball, reducing noise propagation by absorbing and emitting sound wave energy; wood chips provide a light filler, reducing the weight of the sphere and increasing its sound-absorbing effect; 9003-35-4 heat-resistant phenolic resin acts as an adhesive, firmly fixing the various components together and enhancing the stability and durability of the sphere; heat-resistant glass microspheres have good heat insulation properties, reducing heat conduction inside the sphere and improving the heat retention effect; ultrafine inorganic rock wool fibers increase the sound-absorbing capacity of the sound-absorbing ball, reducing environmental noise by capturing and mitigating noise; clean distilled water acts as a solvent and stirring medium, adjusting the viscosity and fluidity of the materials to facilitate mixing and manufacturing; and AC sound-insulating foaming agent increases the porosity of the sound-absorbing ball, creating a buoyant structure and improving the sound-absorbing effect.
[0023] The blades made of the aluminum fiber sound-absorbing board in the present invention have the advantages of being light in weight, high in strength, and not easily broken when bent, and can withstand the erosion of air flow and water flow, and are excellent in water resistance, heat resistance, frost resistance, corrosion resistance and weather resistance. The surface of the blade can be sprayed with multiple types of colors to achieve a decorative effect, and it is also easy to perforate, bend, or cut into a specific shape. There is no fiber dust that pollutes the environment in the processing process, and it will not affect human health.
[0024] The aluminum fiber sound-absorbing board can absorb the energy of the incident sound wave, reduce the sound reflection, effectively absorb the high-frequency and medium-frequency sound waves, and achieve the noise reduction effect. At the same time, a plurality of sets of circular through-holes are uniformly arranged at equal distances on the aluminum fiber sound-absorbing board, and foamed particle sound-absorbing balls are placed in the through-holes, thereby further improving the sound-absorbing effect of the aluminum fiber sound-absorbing board. The HB polymer cement-based JS-II type, wood chip powder, phenolic resin, and ultra-fine inorganic rock wool fiber used in the foamed particle sound-absorbing balls all have relatively low heat transfer coefficients and are heat insulation, fire protection, and insulation materials. Their heat transfer coefficients are all smaller than 0.5W / (m2·K). After they are synthesized and foamed, they can achieve a better heat insulation effect. In the "sound absorption" process of the shutter, the porous sound-absorbing material generates corresponding thermal energy on the surface of the shutter due to microscopic mechanical vibration phenomena such as the viscous resistance of air and the vibration of fibers from the sound energy, so that the blade has "heat", thereby achieving a heat preservation effect.
[0025] Compared with the sound-absorbing balls made of a single sound-absorbing material commonly seen in the prior art, the foamed particle sound-absorbing balls described in the present invention rationally utilize the sound insulation, fire protection, and heat preservation characteristics after cement-based foaming, the heat preservation and low heat transfer coefficient characteristics of carbon powder, wood chip powder, and phenolic resin, the obvious air sound insulation effect characteristics of heat-resistant glass microspheres, the fire protection, sound absorption, and heat insulation characteristics of ultra-fine inorganic rock wool fibers, and the sound insulation characteristics of the AC sound-absorbing material foaming agent, and have the characteristics of heat insulation, sound insulation, heat preservation, and fire protection.
[0026] The surface of the foamed particle sound-absorbing ball has micropores, and these pores are an important mechanism for sound absorption. When noise collides with these micropores, frequency collisions occur, converting sound energy into thermal energy. In addition, because the particles inside the foamed particle sound-absorbing ball are irregularly adhered together, there are several micro-voids around the micro-voids, which increases the viscous resistance of the air within the voids. When sound waves enter the sound-absorbing ball material, they propagate along the voids on the surface of the fins, causing vibrations of air molecules within the voids. Due to the viscous resistance of the air and friction between the air molecules and the void walls, the sound energy is converted into thermal energy and consumed.
[0027] This phenomenon can be interpreted from two perspectives. First, foamed particle sound-absorbing balls have porous viscosity and internal friction. When sound waves propagate, the vibration velocities of the particle points differ at different locations, forming a velocity gradient. This creates a viscous or internal frictional interaction between adjacent particle points, hindering their motion and thereby constantly converting sound energy into thermal energy. Second, foamed particle sound-absorbing balls belong to the category of microporous sound-absorbing materials, containing a large number of micropores. Similar to wood wool sound-absorbing boards and honeycomb ceramic sound-absorbing boards, sound waves enter the material through these pores and along the edges of the pores, causing friction and converting sound energy into thermal energy. According to the law of conservation of energy, an increase in thermal energy means a decrease in sound energy.
[0028] Experimental tests have shown that these balls can reduce noise levels by approximately 10-15 dB. Simultaneously, the generated thermal energy can improve the insulation performance of the vessel. Such insulation is particularly important when navigating in the ocean environment, where the climate changes frequently and the temperature difference between day and night is relatively large. Therefore, the application of foam particle sound-absorbing balls can effectively reduce noise and improve insulation performance.
[0029] When shutters are used for extended periods in marine environments with varying climates, further consideration must be given to the rigidity with which the foam particle sound-absorbing balls are embedded in the aluminum fiber sound-absorbing plate. This invention increases the surface roughness of the foam particle sound-absorbing balls by covering them with a carbon fiber wave mesh, thereby improving the corrosion resistance and fatigue resistance of the foam particle sound-absorbing balls and extending their service life. At the same time, the surface of the foam particle sound-absorbing balls is divided into four regions by carbon fibers with a diameter of 1 mm to 1.5 mm, and the carbon fibers are used at both ends of the diameter to fix them to the circular through-holes in the aluminum fiber sound-absorbing plate. From the perspective of structural vibration, this prevents the foam particle sound-absorbing balls from falling off due to the "resonance" phenomenon caused by wind and uncertain external forces in the field.
[0030] After the shutter blades are fully closed, multiple sets of polycrystalline photovoltaic rods fixed to the surface convert solar energy into DC power, which may be supplied directly to a DC load for use, or the electrical energy may be stored in an energy storage device such as a battery and released as needed for application in scenes such as unit windows and curtain walls, or the DC power may be converted to AC power by an inverter and integrated into the ship's power consumption system for use.
Claims
1. A shutter for NYK Line that has heat retention and noise reduction functions, with blades made of aluminum fiber sound-absorbing panels. Multiple sets of circular through-holes are uniformly arranged in the aluminum fiber sound-absorbing panel, and foamed particle sound-absorbing balls are fitted into the circular through-holes. The foamed particle sound-absorbing balls consist of 90 to 105 parts HB polymer cement-based JS-II type, 4 to 6 parts carbon powder, 2 to 3 parts wood dust powder, 4 to 6 parts 9003-35-4 heat-resistant phenolic resin, 6 to 7 parts heat-resistant glass microspheres, 9 to 11 parts ultrafine inorganic rock wool fibers, 145 to 155 parts clean distilled water, and 48 to 52 parts AC sound-insulating material foaming agent. The process for producing the aforementioned foamed particle sound-absorbing ball involves sending the specified proportions of cement, carbon powder, wood chips, phenolic resin, glass microspheres, rock wool fibers, and water to a pulper and uniformly mixing them into a paste, adding a foaming agent to create a cement foaming agent, placing the cement foaming agent in a model, and allowing it to harden in a hardening chamber to form a spherical raw material. This process includes wet cutting a spherical raw material into six, five, or three units, hardening the raw material divided into multiple units, moistening it for 7 to 10 days, and then allowing it to air dry naturally until it becomes the final product. A shutter for NYK Line ships having heat retention and noise reduction functions, characterized in that the surface of the foam particle sound-absorbing ball is covered with a carbon fiber wave mesh, the surface of the foam particle sound-absorbing ball is divided into four regions by carbon fibers with a diameter of 1 mm to 1.5 mm, and the foam particle sound-absorbing ball is fixed at both ends of the diameter to a circular through-hole in an aluminum fiber sound-absorbing plate using carbon fibers.
2. A shutter for NYK lines having heat retention and noise reduction functions, as described in claim 1, characterized in that the blades of the shutter are aluminum fiber sound-absorbing plates, a plurality of sets of circular through-holes uniformly arranged in the aluminum fiber sound-absorbing plates are provided, foamed particle sound-absorbing balls are fitted into the circular through-holes, and the foamed particle sound-absorbing balls consist of 100 parts HB polymer cement type JS-II, 5 parts carbon powder, 2 parts wood dust powder, 5 parts 9003-35-4 heat-resistant phenolic resin, 6.7 parts heat-resistant glass microspheres, 10 parts ultrafine inorganic rock wool fibers, 150 parts clean distilled water, and 50 parts AC sound-insulating material foaming agent.
3. The aforementioned aluminum fiber sound-absorbing plate is characterized in that it is made by placing a layer of aluminum fiber felt in the center of two types of aluminum mesh plates with different mesh hole sizes and rolling it into a thin plate with a thickness of 1.0 to 2.5 mm using a roller mill, thus providing a shutter for NYK lines with heat retention and noise reduction functions, as described in claim 1.
4. A shutter for NYK lines having heat retention and noise reduction functions, as described in claim 1, characterized in that a liquid sealant is applied between the foam particle sound-absorbing ball and the aluminum fiber sound-absorbing plate.
5. A shutter for NYK Line ships having heat retention and noise reduction functions, characterized in that, after the shutter blades are completely closed, multiple sets of polycrystalline rods for solar power generation are provided on the outward-facing blades, as described in claim 1.