1. Power Source: Most car vacuums are powered by either:
* Directly plugging into the car's 12V DC outlet (cigarette lighter): This is the most common method.
* Internal rechargeable battery: This allows for cordless use, but limits runtime and requires charging.
2. Motor: An electric motor, powered by the chosen source, drives the fan.
3. Fan: The fan is the heart of the system. It rapidly spins, creating a low-pressure area inside the vacuum's housing. This low pressure is what generates suction.
4. Airflow Path: Air flows from the area of high pressure (the car's interior) into the area of low pressure (inside the vacuum). This airflow carries along dust, dirt, and debris.
5. Filter: The airflow passes through a filter which traps the collected particles. This filter needs regular cleaning or replacement to maintain suction and avoid clogging. Different filters exist, such as HEPA filters, which trap finer particles.
6. Dustbin or Bag: The filtered air is then released outside the vacuum, leaving the collected debris in a dustbin (often emptyable) or a disposable bag.
7. Nozzle/Attachments: Various nozzles and attachments are often included to reach different areas and handle different types of debris effectively. Crevice tools and brush attachments are common.
8. Hose: A flexible hose connects the vacuum body to the nozzle, allowing for cleaning in various areas of the car.
In summary, a car vacuum creates suction using a motor-driven fan, drawing in dirt and dust, filtering the air, and depositing the debris in a collection container. The whole system is designed to be portable and powered conveniently from the car itself.