What is an automotive electronic vacuum pump
Automotive electronic vacuum pump IS a device that uses piezoelectric material as power source, precisely controls the exchange and transmission of gas through electronic integrated system, with the characteristics of high integration and miniaturization .
It has completely abandoned the traditional electric motor drive mode. Instead, the on-board power supply provides power to drive the motor on the pump body to move the piston, thereby creating vacuum, providing a stable and reliable vacuum source for the hydraulic braking system of electric and hybrid vehicles .
The function of automotive electronic vacuum pumps
Automotive electronic vacuum pumps play a crucial role in automotive braking systems. It mainly provides the necessary vacuum degree for the braking system and helps push the piston of the brake booster. When the driver presses the brake pedal, high-pressure gas is generated in the master cylinder of the brake, and the pressure is transmitted to the brake booster through the hose of the brake assist system. The piston inside the brake booster is pushed upon receiving the gas pressure, thereby compressing more gas into the brake pipe and creating a higher vacuum degree throughout the braking system. This way, even if the driver applies only a small amount of braking force, there will be enough braking force to slow down or stop .
The working principle of automotive electronic vacuum pumps
The automotive electronic vacuum pump utilizes the working principle of a gas transfer pump to achieve the purpose of gas extraction by continuously drawing in and discharging gas. It can generate, improve and maintain a vacuum state in a closed space to meet the requirements of the braking system. This design ensures that the brake booster works properly, which guarantees driving safety .
Youdaoplaceholder0 Vacuum pumps work by mechanically, physically or chemically changing the volume or momentum of a closed space to create a vacuum by drawing gas. They are widely used in chemical, electronic, food, pharmaceutical and other industries.
Working principle (Classified by type)
Youdaoplaceholder0 Water ring vacuum pump
The impeller is eccentrically installed inside the pump casing. When it rotates, it throws water into a ring shape to form a closed space. The right half of the space expands to form vacuum suction, while the left half of the space compresses and then exhausts. Typical applications include gas suction in a coarse vacuum environment.
Youdaoplaceholder0 Rotary vane vacuum pump
The vanes in the rotor slots change the volume of the pump chamber through rotation, periodically completing suction, compression and exhaust. For instance, the Puxu vacuum pump adopts a three-blade structure and relies on centrifugal force to periodically adjust the volume to achieve gas extraction.
Youdaoplaceholder0 Roots vacuum pump
The two rotors rotate synchronously in opposite directions. After the gas is drawn in, it is transferred to the exhaust port along with the enclosed space. The feature is that it does not require internal compression, but it needs to be used in conjunction with a forepump to improve efficiency.
Youdaoplaceholder0 Liquid ring vacuum pump
The rotor rotates eccentrically to form a liquid ring, which, together with the blades, changes the volume to achieve air extraction. It is suitable for handling scenarios containing steam or corrosive gases.
Youdaoplaceholder0 Dry vacuum pump
No oil or liquid sealing is required. Low-pollution gas extraction is achieved through the series connection of multiple rotors, such as the claw-type dry vacuum pump which continuously compresses gas through four rotors.
Main application fields
Youdaoplaceholder0 Chemical industry : For vacuum distillation, drying and filtration, for example, by reducing pressure to accelerate the evaporation of moisture from the material.
Youdaoplaceholder0 Electronics industry : Support vacuum coating, packaging and other processes, ensure oxygen-free environment to improve product performance.
Youdaoplaceholder0 Food industry : Vacuum packaging inhibits microbial growth, vacuum pickling accelerates flavor penetration.
Youdaoplaceholder0 Pharmaceutical industry : Vacuum drying of pharmaceutical raw materials, vacuum sterilization improves efficiency and safety.
Youdaoplaceholder0 Other fields : Vacuum smelting in metallurgy, vacuum sealing in aerospace, etc.
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