Dry vacuum pump
AssigneeIndustrial Technology Research Institute
InventorsChih-Cheng Wang, Jenn Chen Tang, Cheng Chou Shieh, Weng-Shih Cang
Life of this patent
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Abstract
A dry vacuum pump comprises a scroll-type vacuum pump and a rotary-vane vacuum pump, wherein the rotary-vane vacuum pump is mounted on the side of an inlet, whereas the scroll-type vacuum pump is mounted on the side of an outlet, and then a compound-type dry vacuum pump is formed by connecting and integrating the rotary-vane vacuum pump and the scroll-type vacuum pump, having the advantages of high compression ratio, high vacuuming speed, low production cost and simplified structure, thus improving the working effectiveness and quality of pumps accordingly.
Claims6
A dry vacuum pump, comprising:
- a) a housing including an inlet, an outlet, a right end plate, and a left end plate;
- b) a rotary-vane vacuum pump including a rotor, a pair of vanes and a stator chamber, the rotary-vane vacuum pump being mounted in the housing, with the left end plate being positioned at a left side of the rotary vane vacuum pump;
- c) a scroll-type vacuum pump including a fixed scroll and an orbiting scroll, the scroll-type vacuum pump being mounted in said housing;
- d) a ball-type anti-self-revolving mechanism mounted between the right end plate and the orbiting scroll of the scroll-type vacuum pump;
- e) a motor-driven crank for driving the orbiting scroll of the scroll-type vacuum pump and the rotor of the rotary-vane vacuum pump;
- and
- f) wherein the rotary-vane vacuum pump is mounted on a side of the inlet, the scroll-type vacuum pump is mounted on a side of the outlet, thus forming a conduit connecting both the rotary-vane vacuum pump and the scroll-type vacuum pump for discharging and exhausting air, and air is introduced from said rotary-vane pump and discharged to an air-introducing space of the scroll-type vacuum pump and thereafter exhausted by the scroll-type vacuum pump.
Dependencies are inferred from the claim text.