What is the air duct assembly in the car dashboard?
The air blowing duct assembly in the car dashboard is an important component of the car's air conditioning ventilation system, specifically responsible for guiding the cooled or heated air processed by the air conditioning system through the internal ducts of the dashboard to the outlets in the face area of the front passengers.
Core Definition and Function
Definition: The air blowing duct assembly usually includes the duct body, guide vanes, regulating motor (in electrically controlled models), connection interfaces, and installation brackets, and is a dedicated air supply channel integrated into the dashboard assembly.
Main Function:
Directly direct the airflow generated by the air conditioning unit to the face blowing outlets of the front passengers;
Adjust the direction and angle of the airflow through the vanes or wind gates;
Together with the defrosting duct, face blowing duct, etc., form a complete air circulation system of the air conditioning.
Structural Characteristics (Taking modern models as an example)
Integrated Design: For example, Tesla Model 3 adopts a hidden, high-width ratio of 20:1, continuous air blowing duct, which improves visual simplicity and air flow uniformity.
Multi-area Control: Some models support independent control on the left and right sides, and adjust the airflow direction through the central control screen.
Material and Process: Mostly manufactured using injection molding PP (polypropylene) or blow molding PE (polyethylene) processes, balancing lightweight and durability.
Position and Association in the Vehicle
It is one of the core subsystems of the dashboard assembly (Instrument Panel Assembly);
Usually located on the upper part of the dashboard, connecting the air conditioning unit and the front outlet;
Arranged side by side with the defrosting duct (used for defogging/drying the front windshield) and the face blowing duct (used for the foot area).
Typical Application Scenarios
During summer cooling, direct the cold air to the face to avoid direct contact with the body;
During winter heating, provide comfortable warm air;
Quick defogging: Some models can the defrosting duct to work collaboratively.
The air blowing duct assembly in the car dashboard is an important component of the air conditioning system. Its main function is to guide the air (either cold or hot air) processed by the air conditioning system to the face area of the passengers， achieving comfortable air supply. According to public information， its specific functions and design features are as follows： Core function
Directional air supply: The airflow is transported from the air conditioning box to the face outlet on the dashboard, directly blowing towards the faces of the driver and front passengers, enhancing the riding comfort.
Optimized air flow organization: Through a reasonable layout of the air ducts (such as the Model 3 adopting a main blowing face + auxiliary blowing face layered layout), the air distribution inside the vehicle is improved, and dead corners are reduced.
Reduced dashboard height: Some models (such as the Model 3) reduce the dashboard height by using a circularly layered air duct layout, avoiding Z-axis stacking, effectively lowering the dashboard height and expanding the forward field of vision.
Structural and control features
Integrated motor control: Modern models (such as the Model 3, Dianlan, Altar, etc.) use stepper motors or DC motors to drive the air valves or blades, achieving stepless wind direction adjustment without the need to manually move physical blades.
Hidden outlet design: For example, the Model 3 uses a continuous narrow slit outlet, enhancing visual simplicity and utilizing the Kondrat effect to make the airflow adhere to the dashboard and enhance the uniformity of air supply.
Zone independent control: The left and right blowing face air ducts can be controlled separately, supporting single-zone or multi-zone temperature control to meet the needs of different passengers.
Technical evolution trend
Space optimization: Patent technologies (such as Altar, Dianlan) emphasize improving space utilization and interior aesthetics.
Intelligent interaction: Some systems integrate touch screens or intelligent surfaces, facilitating operation by rear passengers.
Deicing collaboration: The blowing face air ducts often work in collaboration with the front deicing air ducts to enhance the efficiency of deicing the front windshield.
In summary, the blowing face air duct assembly not only performs the basic air supply function but also continuously innovates in ergonomics, space utilization, and intelligent interaction.
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