Heat-retaining and noise-reducing shutter for NYK ships

Abstract

The present invention discloses a shutter for liner ships with heat retention and noise reduction functions, the shutter blades of which are aluminum fiber sound-absorbing panels, the aluminum fiber sound-absorbing panels having uniformly arranged sets of circular through-holes, and foamed particle sound-absorbing balls fitted into the circular through-holes, the foamed particle sound-absorbing balls being composed of 90-105 parts HB polymer cement type JS-II, 4-6 parts carbon powder, 2-3 parts wood chippings, 4-6 parts 9003-35-4 heat-resistant phenolic resin, 6-7 parts heat-resistant glass microspheres, 9-11 parts ultrafine inorganic rock wool fibers, 145-155 parts clean distilled water, and 48-52 parts AC sound-proofing foaming agent. The present invention solves the problem of prior art shutter materials being unable to simultaneously provide light-blocking, sound-absorbing or sound-proofing, and heat-retaining effects.

Description

[Technical Field]

[0001] The present invention relates to the technical field of heat-insulating and sound-proofing materials, and in particular to a shutter for mail ships with heat-insulating and noise-reducing functions. [Background technology]

[0002] With the development of industrial production, transportation and urban construction, and the continuous increase in population density, environmental noise has an increasingly serious impact on human life and has become one of the major pollution sources that pollute the human living environment. Therefore, the soundproofing performance of building exterior windows directly affects the quality of human life.

[0003] The light-blocking, heat-insulating, and sound-proofing functions of doors and windows are important for ships. This is because more than 50% of a ship's energy consumption comes from heating and ventilation systems, and a large portion of that energy is lost through doors and windows. Currently, shutter structures used on ships are similar to those used in ordinary buildings and only have a light-blocking function. However, when sailing in a marine environment, ships must face interference from external noises such as ocean waves, strong winds, and sirens, as well as challenges such as relatively large temperature differences between day and night and sudden weather changes. For this reason, conventional shutter materials are unable to simultaneously provide light-blocking, sound-absorbing / sound-proofing, and heat-insulating functions. Summary of the Invention [Problem 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 liner ship that has a heat-retaining and noise-reducing function in which, when closed, the blades of the shutter have a heat-retaining and insulating effect, thereby reducing energy loss in the heating and ventilation system of the liner ship. [Means for solving the problem]

[0005] Regarding the technical solution, in order to achieve the above object, the present invention provides a heat-retaining and noise-reducing shutter for liner ships, the shutter blades of which are aluminum fiber sound-absorbing boards, the aluminum fiber sound-absorbing boards having a plurality of uniformly arranged sets of circular through-holes, foam particle sound-absorbing balls fitted into the circular through-holes, the foam particle sound-absorbing balls being composed of 90-105 parts of HB polymer cement type JS-II, 4-6 parts of carbon powder, 2-3 parts of wood chips, 4-6 parts of 9003-35-4 heat-resistant phenolic resin, 6-7 parts of heat-resistant glass microspheres, 9-11 parts of ultrafine inorganic rock wool fiber, 145-155 parts of clean distilled water, and 48-52 parts of AC sound-proofing material foaming agent.

[0006] Preferably, the foam particle sound-absorbing ball is composed of 100 parts of HB polymer cement type JS-II, 5 parts of carbon powder, 2 parts of wood chips, 5 parts of 9003-35-4 heat-resistant phenolic resin, 6.7 parts of heat-resistant glass microspheres, 10 parts of ultrafine inorganic rock wool fibers, 150 parts of clean distilled water, and 50 parts of AC sound-proofing material foaming agent.

[0007] The 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 holes, and rolling them into a thin plate with a thickness of 1.0 to 2.5 mm using a roller mill.

[0008] The process of manufacturing the foam particle sound absorbing ball is as follows: cement, carbon powder, wood chips, phenolic resin, glass microspheres, rock wool fiber, and water are mixed in a pulper to form a paste, and a foaming agent is added to make a cement foaming agent. The cement foaming agent is then placed in a mold and placed in a hardening chamber to harden, forming a green body. The method includes wet cutting the green substrate, making the cutting unit into six peeling surfaces, five peeling surfaces, or three peeling surfaces, and then allowing the green substrate to harden and moisten for 7 to 10 days after cutting until it is naturally dried and becomes 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 at both ends of the diameter to the circular through-holes of the aluminum fiber sound-absorbing board using carbon fibers.

[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 foam particle sound absorbing ball and the aluminum fiber sound absorbing board.

[0012] After the shutter blades are fully closed, a plurality of sets of photovoltaic polycrystalline rods are placed on the outward facing blades. [Effects of the Invention]

[0013] Regarding the beneficial effects, the present invention has the following advantages: first, the present invention uses blades made of aluminum fiber sound-absorbing board to absorb the energy of incident sound waves, thereby achieving noise reduction and heat retention effects, and is light in weight and strong, making it suitable for long-term use in marine environments with diverse climates; and second, the foam particle sound-absorbing ball made 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 the sound energy into heat energy for consumption, thereby achieving a heat retention effect. [Brief explanation of the drawings]

[0014] [Figure 1] Figure 1 is a schematic diagram of the shutter structure. [Figure 2] FIG. 2 shows a single sound-absorbing ball whose surface is covered with a carbon fiber wave mesh. [Figure 3] FIG. 3 shows an aluminum fiber sound absorbing board into which foam particle sound absorbing balls are embedded. DETAILED DESCRIPTION OF THE INVENTION

[0015] The technical solution of the present invention will be described in detail below by way of examples with reference to the drawings.

[0016] As shown in Figure 1, the shutter for liner ships with heat retention and noise reduction functions described in this invention has two types of aluminum mesh plates with different mesh holes, each with a layer of aluminum fiber felt placed in the center, and the resulting plate is rolled using a roller mill to form an aluminum fiber sound-absorbing plate with a thickness of 1.0 to 2.5 mm. The aluminum fiber sound-absorbing plate has multiple sets of uniformly arranged circular through-holes, with the spacing between adjacent circular through-holes being 10 to 15 mm, and foam particle sound-absorbing balls fitted into the circular through-holes, as shown in Figure 2.

[0017] As shown in Figure 3, the foam particle sound-absorbing ball is covered with a carbon fiber wave mesh, and its surface is divided into four regions by carbon fibers with diameters of 1 mm to 1.5 mm. The foam particle sound-absorbing ball is fixed at both ends of its diameter into the circular through-holes of the aluminum fiber sound-absorbing board using the carbon fibers. A liquid sealant is applied between the foam particle sound-absorbing ball and the aluminum fiber sound-absorbing board.

[0018] After the shutter blades are fully closed, the outward facing blades are further provided with a plurality of sets of photovoltaic polycrystalline rods.

[0019] The present invention further provides a composition and method for producing a suitable foamed particle sound-absorbing ball, which is composed of 100 parts HB polymer cement type JS-II, 5 parts carbon powder, 2 parts wood chips, 5 parts 9003-35-4 heat-resistant phenolic resin, 6.7 parts heat-resistant glass microspheres, 10 parts ultrafine inorganic rock wool fiber, 150 parts clean distilled water, and 50 parts AC sound-proofing material blowing agent.

[0020] The process of manufacturing the foam particle sound absorbing ball is as follows: cement, carbon powder, wood chips, phenolic resin, glass microspheres, rock wool fiber, and water are mixed in a pulper to form a paste, and a foaming agent is added to make a cement foaming agent. The cement foaming agent is then placed in a mold and placed in a hardening chamber to harden, forming a green body. The method includes wet cutting the green substrate, making the cutting unit into six peeling surfaces, five peeling surfaces, or three peeling surfaces, and then allowing the green substrate to harden and moisten for 7 to 10 days after cutting until it is naturally dried and becomes the final product.

[0021] By using six, five, or three peeling surfaces for each cutting unit, the sound-absorbing ball can be made into multiple discontinuous surfaces, preventing spherical resonance during the noise absorption process and creating more sound-absorbing voids, thereby absorbing more external noise. Wet-cutting the green material into multiple units can better ensure the strength of the material. From a mechanical perspective, wet-cutting preserves the material's physical properties, such as elastic modulus and yield strength, and provides better strength after drying. At the same time, cutting the material into multiple units allows it to be subjected to external forces separately, reducing the occurrence of physical damage to the material, such as fractures or shedding. Therefore, wet-cutting the green material into multiple units is a highly effective measure for improving material performance and reducing damage.

[0022] In the manufacturing process of foam sound-absorbing balls, each component plays the following role: HB polymer cement type JS-II is the main base material, providing the structure and rigidity of the ball; carbon powder increases the sound-absorbing performance of the sound-absorbing ball and reduces noise transmission by absorbing and dissipating sound energy; wood chips provide a light filler, reducing the weight of the ball and increasing its sound-absorbing effect; 9003-35-4 heat-resistant phenolic resin acts as an adhesive, firmly binding the various components together and enhancing the stability and durability of the ball; heat-resistant glass microspheres have good insulation properties, reducing heat conduction inside the ball and improving heat retention; ultrafine inorganic rock wool fibers increase the sound-absorbing ability of the sound-absorbing ball and reducing environmental noise by capturing and attenuating noise; clean distilled water acts as a solvent and stirring medium, adjusting the viscosity and fluidity of the material for easier mixing and manufacturing; and AC sound-proofing foaming agent increases the porosity of the sound-absorbing ball, creating a cellular structure and improving sound absorption.

[0023] The blades made of the aluminum fiber sound-absorbing plate of the present invention have the advantages of being light in weight, strong in strength, and not easily broken when bent, and can withstand erosion from air and water currents, and have excellent water resistance, heat resistance, frost resistance, corrosion resistance, and weather resistance. The surface of the blades can be sprayed with multiple colors to achieve decorative effects, and they can be easily perforated, bent, and cut into specific shapes, and the processing process does not produce fiber dust that pollutes the environment or affect human health.

[0024] Aluminum fiber sound-absorbing panels absorb incident sound energy, reducing sound reflection and effectively absorbing high- and medium-frequency sound waves, achieving noise reduction. They also feature several sets of uniformly spaced, equidistant circular through-holes, which can be filled with foam sound-absorbing balls to further enhance the sound-absorbing effect. The HB polymer cement type JS-II, wood chips, phenolic resin, and ultrafine inorganic rock wool fibers used in the foam sound-absorbing balls all have relatively low heat transfer coefficients, making them suitable for thermal insulation, fire protection, and insulation. Their heat transfer coefficients are all less than 0.5 W / (m² / K). After being combined and foamed, they can provide excellent thermal insulation. During the sound-absorbing process, the porous sound-absorbing material converts sound energy into heat energy on the surface of the blades through the viscous resistance of air and micromechanical vibrations such as fiber vibration, thereby providing heat to the blades and providing insulation.

[0025] Compared to sound-absorbing balls made from a single sound-absorbing material commonly seen in the prior art, the foamed particle sound-absorbing ball of the present invention combines the properties of heat insulation, sound insulation, heat insulation and fire prevention by rationally utilizing the sound-insulating, fire-proof and heat-insulating properties of cement-based foaming, the heat-insulating and low heat transfer coefficient properties of carbon powder, wood chips and phenolic resin, the clear airborne sound-insulating effect of heat-resistant glass microspheres, the fire-proof, sound-absorbing and heat-insulating properties of ultra-fine inorganic rock wool fibers, and the sound-insulating properties of AC sound-insulating material foaming agent.

[0026] The surface of foam particle sound-absorbing balls has micropores, which are the key mechanism for sound absorption. When noise collides with these micropores, a frequency collision occurs, converting sound energy into heat energy. In addition, because the particles inside the foam particle sound-absorbing balls are irregularly bonded, there are several microvoids around the microvoids, 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 blades, causing the air molecules in the voids to vibrate. Due to the viscous resistance of the air and the friction between the air molecules and the void walls, the sound energy is converted into heat energy and is wasted.

[0027] This phenomenon can be explained from two perspectives. First, foam particle sound-absorbing balls have porous viscosity and internal friction. When sound waves propagate through them, the vibration speeds of particles vary at different locations, forming a velocity gradient. Viscous or internal friction forces interact between adjacent particles, hindering their motion and constantly converting sound energy into heat energy. Second, foam particle sound-absorbing balls are microporous sound-absorbing materials with a large number of micropores inside. Like wood wool sound-absorbing boards and honeycomb ceramic sound-absorbing boards, sound waves travel along these pores to the interior and edges of the material, causing friction and converting sound energy into heat energy. According to the law of conservation of energy, an increase in heat energy means a decrease in sound energy.

[0028] Experimental tests have shown that these balls can reduce noise levels by approximately 10-15 dB. At the same time, the generated heat energy can also improve the thermal insulation performance of the hull. This thermal insulation effect is particularly important when ships sail in marine environments where the climate changes drastically 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 thermal insulation performance.

[0029] For shutters used over long periods in marine environments with varying climates, the robustness of the foam sound-absorbing balls embedded in the aluminum fiber sound-absorbing panel must be considered. This invention covers the foam sound-absorbing balls with a carbon fiber wave mesh, increasing the surface roughness of the foam sound-absorbing balls, improving their corrosion resistance and fatigue resistance and extending their service life. At the same time, the surface of the foam sound-absorbing balls is divided into four areas with carbon fibers measuring 1mm to 1.5mm in diameter, and the carbon fibers are used to secure the foam sound-absorbing balls to the circular through-holes in the aluminum fiber sound-absorbing panel at both ends of the diameter. This prevents the foam sound-absorbing balls from falling off due to "resonance" caused by outdoor wind and other uncertain external forces, from the perspective of structural vibration.

[0030] After the shutter blades are fully closed, the sets of photovoltaic polycrystalline rods fixed on the surface convert the solar light energy into DC power, which can be directly supplied to DC loads for use, or the electrical energy can 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 can be converted into AC power by an inverter and integrated into the ship's power consumption system for use.

Claims

1. A shutter for NYK ships with heat retention and noise reduction functions, the blades of which are made of aluminum fiber sound-absorbing panels. The aluminum fiber sound-absorbing board has a plurality of uniformly arranged sets of circular through-holes, and foamed particle sound-absorbing balls are fitted into the circular through-holes, and the foamed particle sound-absorbing balls are composed of 90 to 105 parts of HB polymer cement type JS-II, 4 to 6 parts of carbon powder, 2 to 3 parts of wood chips, 4 to 6 parts of 9003-35-4 heat-resistant phenolic resin, 6 to 7 parts of heat-resistant glass microspheres, 9 to 11 parts of ultrafine inorganic rock wool fibers, 145 to 155 parts of clean distilled water, and 48 to 52 parts of AC sound-proofing material foaming agent, The process of manufacturing the foam particle sound absorbing ball is as follows: cement, carbon powder, wood chips, phenolic resin, glass microspheres, rock wool fiber, and water are mixed in a pulper to form a paste, and a foaming agent is added to make a cement foaming agent. The cement foaming agent is then placed in a mold and placed in a hardening chamber to harden, forming a green body. wet-scraping the green body, forming a cutting unit with six peeling surfaces, five peeling surfaces, or three peeling surfaces, and allowing the green body to harden and moisten for 7-10 days after cutting until it is naturally dried to become a finished product; A shutter for mail ships with heat retention and noise reduction functions is characterized in that the surface of the foamed particle sound-absorbing ball is covered with a carbon fiber wave mesh, the surface of the foamed particle sound-absorbing ball is divided into four areas by carbon fibers with a diameter of 1 mm to 1.5 mm, and the foamed particle sound-absorbing ball is fixed at both ends of its diameter to circular through-holes in an aluminum fiber sound-absorbing board using carbon fibers.

2. 2. A shutter for mail ships with heat retention and noise reduction functions as described in claim 1, characterized in that the shutter blades are aluminum fiber sound-absorbing boards, the aluminum fiber sound-absorbing boards have a plurality of uniformly arranged sets of circular through holes, foam particle sound-absorbing balls are fitted into the circular through holes, and the foam particle sound-absorbing balls are made of 100 parts HB polymer cement type JS-II, 5 parts carbon powder, 2 parts wood chips, 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-proofing material foaming agent.

3. The 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 holes, and rolling them into a thin plate 1.0 to 2.5 mm thick using a roller mill. This is a shutter for liner ships with heat retention and noise reduction functions as described in claim 1.

4. 2. The shutter for a liner ship with heat retention and noise reduction functions according to claim 1, wherein a liquid sealant is applied between the foam particle sound-absorbing balls and the aluminum fiber sound-absorbing board.

5. A ship shutter with heat retention and noise reduction functions as described in claim 1, characterized in that after the shutter blades are completely closed, multiple sets of solar power generation polycrystalline rods are installed on the blades facing outward.

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