Noise isolation hood

Acoustic Enclosure Introduction:

To prevent external noise intrusion, construct soundproof chambers with excellent sound-insulating properties in areas with intense noise, creating quiet rooms or spaces to protect the staff's hearing. Such soundproofing facilities are known as soundproof enclosures. They are precision-engineered soundproofing and noise reduction devices, consisting of a layer of metal shell with certain weight and rigidity, which is impermeable to air, and an inner layer of sound-absorbing materials added through special processes. The outer layer is typically made of 1-2mm thick steel plates, coated with damping paint, asphalt, and other damping layers to prevent resonance and low-frequency vibrations. To enhance the noise reduction effect, an additional layer of sound-absorbing materials (such as glass wool, micro-perforated plates, etc.) is placed inside. A gap should be left between the machine and the soundproof enclosure, and hard connections between the machine and the soundproof enclosure support, as well as between the soundproof enclosure and the foundation, should be avoided. Vibration dampers should be added where necessary.

Acoustic Enclosure Structural Characteristics:

The overall structure of the soundproof hood is frame-type.

2. Soundproof windows feature double-layer 5mm thick tempered glass for shock resistance and noise insulation.

3. The soundproof doors utilize a dual-magnetic "sound barrier" design, sealed with gaskets around the perimeter to enhance noise reduction.

5. The outer walls of the noise insulation罩 are fully constructed with 2.0mm thick national standard high-quality steel plates.

6. Micro-porous metal mesh panels are used inside the soundproofing hood.

7. The wall sandwich layer of the soundproofing hood is made with environmentally friendly soundproofing cotton, soundproof boards, and damping boards, etc.

8. The exterior surface is fully coated with electrostatic powder coating. (Color options are available for customer selection.)

9. The soundproofing hood is constructed of a steel frame structure, featuring a solid and aesthetically pleasing design with a smooth, flat outer surface, completely concealed screw holes. The top of the hood is equipped with a low-noise, high-power exhaust fan, ensuring a balanced internal temperature.

10. Lighting fixture set, with power distribution control switches and outlets.

Soundproofing Enclosure Performance Features:

1. The soundproofing hood is constructed as a whole steel assembly, featuring a sturdy and aesthetically pleasing design. The outer surface is smooth and flat, with no visible screw holes, concealed for a sleek look.

2. The principle of the soundproofing hood is to enclose the noise source within a small space, acting as a protective structure to reduce its outward radiation of noise. Therefore, it can be designed according to the specific operational requirements, operating conditions, and ventilation and heat dissipation needs of the various noise source equipment. Insertion loss of the soundproofing hood: 20-40dB(A); the sound insulation requirements can be designed according to the user's specifications.

When designing and manufacturing soundproof enclosures, the following four requirements should be considered:

The baffle of the soundproofing enclosure should have sufficient sound insulation to block the transmission of air sound, while also reducing the echo inside the enclosure and preventing the transmission of solid sound.

(2) Minimize holes in the casing as much as possible; for necessary holes, keep the opening area as small as possible. At the joints of the casing components, implement sealing measures to reduce sound leakage. Holes and gaps in the soundproofing casing significantly affect its noise reduction effectiveness, especially at high frequencies. The noise reduction amounts for soundproofing casings with leakage areas of 10%, 1%, and 0.1% are 10, 20, and 30 dB, respectively.

(3) Due to the heat dissipation of the equipment inside the hood, the temperature inside the hood may rise. Appropriate ventilation and heat dissipation measures should be taken.

(4) Consider the requirements for ease of operation and maintenance of the source machinery and equipment. For example, install entrance and exit points, observation windows, handholes, movable covers, or removable and assembleable shields to facilitate access to the machine, observe its operation, and perform operations and maintenance.

Only a well-designed fully enclosed soundproof hood, installed with vibration isolation supports, without any holes or with muffler installation through holes, and equipped with properly sealed soundproof doors, can achieve ideal noise reduction values.

For details, please contact: 020-82325801, 82323025.

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