Double-acting vacuum pump

Abstract

The invention discloses a double-acting vacuum pump. The double-acting vacuum pump comprises a motor, the motor comprises a motor shell, a gland is arranged at the head end of the motor shell in a covering mode, a double-acting structure is arranged in an inner chamber of the gland, an extraction opening and an exhaust opening are formed in the head of the motor shell, the double-acting structure comprises a stator, a rotor, a suction disc and an exhaust disc, the rotor is arranged in a negative camber cavity of the stator, the stator is fixed between the suction disc and the exhaust disc, a rotor groove is formed in the end face of the rotor in the circumferential direction, rotor blades are installed in the rotor groove, a sealed working chamber is formed by the suction disc, the stator, the rotor, the rotor blades and the exhaust disc, suction through holes are formed in the edge of the stator, the rotor is driven by a motor shaft to rotate, and when the rotor is located between 0 degree and 90 degrees as well as between 180 degrees and 270 degrees, the working chamber sucks gas through the suction through holes. By means of the double-acting vacuum pump, when a driver treads a brake pedal at high frequency and for a long time, the vacuum pump can effectively provide vacuum degree of a braking power assisting system, and thereby the driver can conduct braking more conveniently and easily.

Description

technical field [0001] The present invention relates to vacuum pumps. Background technique [0002] Vane vacuum pumps are mainly used in automotive braking systems. Especially for new energy electric vehicles, the function is to provide a stable vacuum for the vacuum booster of the brake system, so that the driver can brake the car more conveniently, easily and effectively. [0003] At present, the vacuum pump used in new energy electric vehicles is a single-acting structure, which cannot meet the vacuum requirements of the braking system of new energy electric vehicles, often causing the driver to feel heavy when stepping on the brake pedal, or unable to brake, which affects the vehicle. normal driving, causing serious traffic accidents. [0004] In addition, due to the phenomenon of "trapped air" in the current vacuum pump, the sound insulation effect is not good, and the noise generated during operation is relatively large. Contents of the invention [0005] The tech...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a double-acting vacuum pump, which solves the problem that the existing vacuum pump has a low pumping rate and a small maximum vacuum degree, which cannot meet the vacuum degree requirements of the braking system of a new energy vehicle, and at the same time reduces the working time of the vacuum pump. generated noise

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