What is the external air circulation symbol for vehicle air conditioning?
1 Answers
The circulation symbol is a circular arrow within a car graphic; while the external circulation symbol features an arrow entering the vehicle from outside. However, many current vehicle models no longer have a dedicated external circulation button. This doesn't mean the function is absent, but rather manufacturers simplify the design by making external circulation the default mode when the internal circulation button isn't activated. Additional information is as follows: 1. External circulation mode: This mode uses a fan to draw outside air into the cabin, meaning the air passage between exterior and interior remains open. The fan blows external air, and even when the fan is off, moving vehicles still allow airflow into the cabin to replenish fresh air. The sensation of airflow with the fan off often indicates active external circulation settings. 2. Internal circulation mode: This mode seals the airflow passage between interior and exterior. Without the fan, no air circulates, and when activated, the fan only recirculates existing cabin air. Internal circulation primarily serves to effectively block external pollutants like dust, harmful gases, smoke, road dust, strong odors, or exhaust fumes from preceding vehicles in dense traffic. It also helps maintain cabin temperature.
