Office Chair Under Fan

The design of office chair under fans is exemplified by the Qingxian OC1 Pro, which utilizes a suction-type ventilation system for efficient heat dissipation, with other simple solutions also available.

The core of the Qingxian OC1 Pro's ventilation system is a centrifugal suction fan located beneath the seat cushion, which operates at a high speed of 4000 revolutions per minute. It draws hot air from the contact surface between the seat cushion and the human body and expels it through the bottom, creating a continuous airflow circulation. This design directly addresses the issue of heat accumulation caused by prolonged sitting, using negative pressure principles to accelerate the flow of hot air and prevent localized overheating.

The support structure of the system consists of six layers of composite materials, each with air-permeable channels:

1. The top layer uses Danish Gabriel Atlantic breathable fabric, enabling initial air exchange through high-density fabric pores;
2. The soft silk cotton layer provides cushioning while maintaining breathability;
3. The three-dimensional support mesh enhances airflow penetration through its hollow structure;
4. The variable-hardness perforated sponge is designed with different density zones based on human pressure distribution, with perforations further guiding airflow;
5. The airflow distribution and pressure equalization layer evenly distributes the air drawn by the fan to each layer, preventing excessive local air pressure;
6. The bottom-layer centrifugal suction fan serves as the power source, generating negative pressure through high-speed rotation to drive the entire circulation system.

In addition to professional designs, simple heat dissipation solutions can also enhance comfort:

• Seat cushion covers with ventilation holes: By adding regularly arranged small holes to the chair surface covering, airflow is accelerated, reducing heat retention. Note that the hole size should be appropriate to avoid compromising support;
• USB mini cooling fans: Choose models that can be fixed beneath the chair surface to create convection through continuous airflow. Ensure the fan fits snugly against the chair surface to prevent noise from vibration or displacement affecting the user experience.

Among the two types of solutions, the integrated design of the Qingxian OC1 Pro offers advantages in heat dissipation efficiency, quiet operation, and durability, making it suitable for scenarios with high comfort requirements. Simple solutions, on the other hand, are characterized by low cost and easy installation, making them suitable for temporary use or situations with limited budgets.