Design principles of ventilation system for mobile soundproof cabins

The design principle of a mobile soundproof cabin ventilation system is a complex process that integrates knowledge from multiple fields such as acoustics, aerodynamics, and environmental science. Its core objective is to achieve air circulation and renewal within the cabin while ensuring sound insulation, in order to provide a quiet and comfortable environment.

Mobile soundproof cabins typically employ a sealed design to effectively block or reduce the transmission of external noise. However, this sealed design also leads to poor internal air circulation, which not only affects the comfort and health of the occupants but may also reduce work efficiency due to air quality issues. Therefore, the ventilation system plays a crucial role in the design of mobile soundproof cabins. A well-designed and configured ventilation system can effectively solve the problem of internal air circulation, providing a soundproof yet comfortable environment.

The design of ventilation systems for mobile soundproof cabins should adhere to the following principles:

1. High efficiency: The ventilation system should be highly efficient, capable of quickly and effectively replacing indoor and outdoor air to ensure indoor air freshness and comfort.
2. Low noise: Since mobile soundproof cabins are primarily used for sound insulation, the ventilation system should be designed to minimize noise and avoid disturbing occupants.
3. Energy saving and environmental protection: While ensuring ventilation effectiveness, energy-saving and environmentally friendly ventilation equipment should be selected as much as possible to reduce energy consumption and emissions. 4.
Ease of maintenance: The ventilation system should be easy to install, debug, and maintain, reducing operating costs.

The core components of a mobile soundproof cabin ventilation system include air inlets, air inlet ducts, fans, air filters, exhaust ducts, and exhaust outlets.

- Air Inlets: Typically located on one side or top of the soundproof cabin, they are used to introduce fresh outdoor air. The design of the air inlet should consider dustproofing and waterproofing to ensure service life and safety.
- Air Inlet Ducts: These transport the fresh air entering the soundproof cabin to the areas requiring ventilation. The air inlet ducts should be made of corrosion-resistant and easy-to-clean materials to avoid air pollution.
- Fans: The core component of the ventilation system, they generate airflow by rotating blades, increasing air velocity. The selection of fans should consider their performance, energy efficiency ratio, and reliability to ensure good performance during use.
- Air Filters: These remove dust, particulate matter, bacteria, and other impurities from the air, ensuring high-quality air entering the cabin. The selection of air filters should be based on indoor air quality requirements and ventilation volume.
- Exhaust Ducts: These transport stale air from the cabin to the outside. The design of the exhaust ducts should consider preventing backflow and contamination, ensuring exhaust efficiency.
- Exhaust vents: Typically located on the opposite side or bottom of the soundproof cabin, these vents are used to expel stale air from the cabin. The design of the exhaust vents should consider their location and size to meet the needs of indoor air circulation.

Airflow organization is a crucial aspect of ventilation system design, determining the distribution and circulation of air within the cabin. In mobile soundproof cabin ventilation systems, carefully designed airflow paths and velocities ensure even air distribution, preventing dead zones or areas of poor air circulation.

- Fresh Air Introduction: Fresh air enters the cabin through inlets and ducts, is filtered, and then circulated by a fan.
- Air Circulation: The airflow generated by the fan circulates within the cabin, ensuring even air distribution to all areas. -
Stale Air Exhaust: Stale air is exhausted outdoors through exhaust ducts and vents, achieving air renewal and replacement.

The design principles of the mobile soundproof cabin ventilation system have been widely verified and optimized in practical applications. Taking a mobile soundproof cabin in a city rail transit depot as an example, this cabin adopts a modular design and features high efficiency, low noise, energy saving, and environmental protection. Actual operation tests have shown that the cabin has good ventilation performance, meeting the sound insulation and ventilation requirements of the rail transit depot.

In practical applications, the design and configuration of the ventilation system should be customized according to the specific size, structure, and usage requirements of the mobile soundproof cabin. For example, in a large soundproof cabin, multiple air inlets and outlets may be required to meet the needs of indoor air circulation; in a small soundproof cabin, more attention needs to be paid to the selection of the fan and the configuration of the air filter to ensure air quality.

The design principle of the mobile soundproof cabin ventilation system is to achieve air circulation and renewal within the cabin through the combined effects of multiple processes, including fresh air introduction, filtration, air circulation, stale air exhaust, intelligent control, and low-noise design. This maintains fresh and comfortable air while ensuring that sound insulation is not compromised. This design principle provides users with a quiet and healthy environment, meeting modern people's pursuit of a high-quality life.