Sound insulation and noise reduction structure of yacht cabin

Abstract

The utility model relates to a yacht engine room sound insulation and noise reduction structure which comprises an engine room wall, a sound insulation felt layer, a honeycomb damping layer, a fireproof cotton layer, a cavity sound absorption layer and an outer plate are sequentially arranged outside the engine room wall, and triangular corner connectors are connected to the corners of the engine room wall in an abutting mode. The outer side faces of the three perpendicular edges of the triangular corner connector are provided with inserting grooves allowing the ends of the sound insulation felt layer and the honeycomb damping layer to be inserted and embedded, the cavity sound absorption layer is composed of a sound absorption plate and resonance sound absorption cavities formed in the sound absorption plate in an array mode, and the cabin wall and the outer plate are fixedly connected through a screw lock. The sound insulation and noise reduction structure of the yacht cabin realizes gradient attenuation, step-by-step noise filtering and multi-band coverage, ensures a remarkable noise reduction effect and also realizes lightweight maintenance.

Description

Technical Field

[0001] This utility model relates to a sound insulation and noise reduction structure for a yacht engine room. Background Technology

[0002] As luxury items, yachts require a high level of comfort, which in turn necessitates strict noise control. Traditional yacht noise reduction methods primarily involve laying sound-absorbing cotton on flat panels around the engine room. However, this cotton is typically quite thick (over 3 cm), and a single layer is insufficient for noise reduction. Therefore, yacht noise reduction techniques often fall short of achieving ideal results. Existing multi-layered noise reduction methods are costly, complex to construct, inconvenient to install, lack end stability, and suffer from poor seam treatment. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a sound insulation and noise reduction structure for yacht engine room, which is not only reasonable in structure, but also optimizes the noise reduction and sound insulation effect.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a sound insulation and noise reduction structure for a yacht engine room, including an engine room wall, on the outside of which are arranged in sequence a sound insulation felt layer, a honeycomb damping layer, a fireproof cotton layer, a cavity sound-absorbing layer and an outer plate. Triangular corner brackets are abutted at the corners of the engine room wall. Slots for inserting the ends of the sound insulation felt layer and the honeycomb damping layer are opened on the outer surfaces of the three mutually perpendicular sides of the triangular corner brackets. The cavity sound-absorbing layer is composed of a sound-absorbing plate and resonant sound-absorbing cavities arrayed on the sound-absorbing plate. The engine room wall and the outer plate are fastened together by screws.

[0005] Furthermore, the resonant sound-absorbing cavities are all located inside the sound-absorbing plate, and the side of the resonant sound-absorbing cavity near the outer plate is connected to the outer surface of the sound-absorbing plate via a sound-collecting tube.

[0006] Furthermore, the resonant sound-absorbing cavities are all square in shape and are connected to the sound-receiving tube to form a convex shape.

[0007] Furthermore, the honeycomb damping layer is embedded in the sound insulation felt layer, and the outer surface of the sound insulation felt layer is provided with a groove for embedding the honeycomb damping layer.

[0008] Furthermore, the honeycomb damping layer is made of asphalt damping sheet.

[0009] Furthermore, the fireproof cotton layer is made of glass fiber cotton with an outer aluminum film coating.

[0010] Compared with existing technologies, this utility model has the following advantages: through structural optimization and innovative connection details, it achieves effective sound insulation and noise reduction. Furthermore, while ensuring sound insulation performance, it reduces costs, facilitates maintenance and installation, and meets the lightweight and safety standards for yachts. Through the gradient attenuation formed by the outer panel, cavity sound-absorbing layer, fireproof cotton layer, and sound-insulating felt layer, it filters noise step by step, covering the entire frequency band, ensuring significant noise reduction, and also achieving lightweight maintenance.

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the construction of the triangular corner bracket in an embodiment of this utility model.

[0014] In the diagram: 1-cabin wall, 2-sound insulation felt layer, 3-honeycomb damping layer, 4-fireproof cotton layer, 5-cavity sound absorption layer, 6-outer panel, 7-triangular bracket, 8-slot, 9-sound absorption panel, 10-resonance sound absorption cavity, 11-screw, 12-square plate, 13-sound receiver tube, 14-groove. Detailed Implementation

[0015] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0016] like Figures 1-2 As shown, a sound insulation and noise reduction structure for a yacht engine room includes an engine room wall 1. The engine room wall is provided with a sound insulation felt layer 2, a honeycomb damping layer 3, a fireproof cotton layer 4, a cavity sound-absorbing layer 5, and an outer panel 6 in sequence. Triangular corner brackets 7 are abutted at the corners of the engine room wall. The outer surfaces of the three perpendicular sides of the triangular corner brackets are provided with slots 8 for inserting the ends of the sound insulation felt layer and the honeycomb damping layer. The cavity sound-absorbing layer is composed of a sound-absorbing plate 9 and resonant sound-absorbing cavities 10 arrayed on the sound-absorbing plate. The engine room wall and the outer panel are fastened together by screws 11.

[0017] In this embodiment of the invention, the design of the cavity sound-absorbing layer involves designing a honeycomb cavity array between the cabin wall and the outer panel to form a Helmholtz resonant cavity. Each unit is tuned for different frequency noises and absorbs specific frequency sound waves through resonance.

[0018] In this embodiment of the utility model, the triangular bracket is composed of three mutually perpendicular square plates 12 connected as one piece, and each square plate has a slot on its outer side.

[0019] In this embodiment of the utility model, the resonant sound-absorbing cavities are all opened inside the sound-absorbing plate, and the side of the resonant sound-absorbing cavity near the outer plate is connected to the outer surface of the sound-absorbing plate through a sound-collecting tube 13.

[0020] In this embodiment of the invention, the resonant sound-absorbing cavities are all square and are connected to the sound-receiving tube to form a convex shape.

[0021] In this embodiment of the present invention, the honeycomb damping layer is embedded in the sound insulation felt layer, and a groove 14 for embedding the honeycomb damping layer is provided on the outer surface of the sound insulation felt layer.

[0022] In this embodiment of the invention, the honeycomb damping layer is made of asphalt damping sheet.

[0023] In this embodiment of the utility model, the fireproof cotton layer is made of glass fiber cotton with an outer aluminum film coating, which has good fireproof effect and low cost. Ceramic fiber fireproof cotton layer can also be used as a substitute.

[0024] In this embodiment of the utility model, the sound insulation felt layer is made of high-density fiberglass sound insulation felt (0.5-1.0mm), which covers the curved area of ​​the cabin wall to ensure continuous and seamless coverage and to block the seam problem of traditional sound insulation cotton.

[0025] In this embodiment of the invention, the airborne sound transmission blocking method is as follows: outer panel (high frequency) → cavity sound-absorbing layer (mid frequency) → fireproof cotton layer (wideband) → sound insulation felt layer (wideband) to form a gradient attenuation, filtering noise step by step, covering the entire frequency band, ensuring a significant noise reduction effect, and also achieving lightweight maintenance and low cost. During installation, the sound insulation felt layer and honeycomb damping layer can be prefabricated and assembled, with the ends inserted into the slots. Then, the fireproof cotton layer and the cavity sound-absorbing layer are laid in sequence, and finally the outer panel is covered and assembled with screws.

[0026] This utility model is not limited to the preferred embodiment described above. Anyone can derive other various forms of yacht engine room sound insulation and noise reduction structures based on the teachings of this utility model. All equivalent variations and modifications made within the scope of the claims of this utility model should be considered within the scope of this utility model.

Claims

1. A sound insulation and noise reduction structure for a yacht engine room, comprising engine room walls, characterized in that: The cabin wall is sequentially provided with a sound insulation felt layer, a honeycomb damping layer, a fireproof cotton layer, a cavity sound absorption layer, and an outer panel. Each corner of the cabin wall is abutted with a triangular corner bracket. The outer surfaces of the three mutually perpendicular sides of the triangular corner bracket are provided with slots for the ends of the sound insulation felt layer and the honeycomb damping layer to be inserted. The cavity sound absorption layer is composed of a sound absorption plate and resonant sound absorption cavities arrayed on the sound absorption plate. The cabin wall and the outer panel are fastened together with screws.

2. The yacht engine room sound insulation and noise reduction structure according to claim 1, characterized in that: The resonant sound-absorbing cavities are all located inside the sound-absorbing plate, and the side of the resonant sound-absorbing cavity near the outer plate is connected to the outer surface of the sound-absorbing plate via a sound-collecting tube.

3. The yacht engine room sound insulation and noise reduction structure according to claim 2, characterized in that: All of the resonant sound-absorbing cavities are square in shape.

4. The yacht engine room sound insulation and noise reduction structure according to claim 1, characterized in that: The honeycomb damping layer is embedded in the sound insulation felt layer, and the outer surface of the sound insulation felt layer has a groove for embedding the honeycomb damping layer.

5. The sound insulation and noise reduction structure for a yacht engine room according to claim 1, characterized in that: The honeycomb damping layer is made of asphalt damping sheets.

6. The sound insulation and noise reduction structure for a yacht engine room according to claim 1, characterized in that: The fireproof cotton layer is made of glass fiber cotton with an outer aluminum film coating.

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