DOUBLE-SIDED TWO-LEVEL DRY-TYPE VORTEX VACUUM PUMP

WIPO Patent Application WO/2019/218391

A1

A double-sided two-level dry-type vortex vacuum pump comprises a motor (1), a crankshaft (2), a movable vortex plate (4), a left fixed vortex plate (5), and a right fixed vortex plate (3). A mating cavity formed between the left fixed vortex plate (5) and the movable vortex plate (4) and a mating cavity formed between the right fixed vortex plate (3) and the movable vortex plate (4) are vortex operation cavities. The left side of the movable vortex plate (4) is provided with vortex teeth from an outer ring to an inner ring, and the height of the vortex teeth on the inner ring is greater than the height of the vortex teeth on the outer ring. The right side of the movable vortex plate (4) is provided with vortex teeth only on an outer ring. The vortex operation cavities comprise a first-level vortex operation cavity and a second-level vortex operation cavity. A gas flow channel (12) is provided in the movable vortex plate (4) such that the first-level vortex operation cavity communicates with the second-level vortex operation cavity. The double-sided two-level dry-type vortex vacuum pump is completely clean and oil-free, and has a high pumping speed, compression ratio, and ultimate vacuum degree; the pump body produces less heat, and dissipates heat easily, thereby ensuring long-term stable operation.

ZHANG YINGLI (CN)
YUE XIANGJI (CN)
BA DECHUN (CN)
HE CHAO (CN)

PCT/CN2018/088348

November 21, 2019

May 25, 2018

Click for automatic bibliography generation  

UNIV NORTHEASTERN (CN)

F04C18/02; F04C23/00

CN103282666A	2013-09-04
CN103883514A	2014-06-25
CN105960534A	2016-09-21
JP4754061B2	2011-08-24
US20020106294A1	2002-08-08

SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)

View/Download PDF      PDF Help

Previous Patent: ANTI-SHAKE MICRO PAN-TILT CAPABLE OF DRIVING CAMERA MODULE

Next Patent: CHARGING COIL HAVING DOUBLE COILS, AND MANUFACTURING METHOD THEREFOR