US 2022/0186743 A1 · VACUUM PUMP, CASING, AND INLET PORT FLANGE

Abstract

To provide a vacuum pump which separates and constructs an inlet port flange and a casing (outer cylinder) as two components to reduce weight while retaining required strength and which is consequently capable of reducing manufacturing cost. In a vacuum pump, an inlet port flange and a casing (outer cylinder) are separated from each other and constructed as different members. The inlet port flange uses stainless steel as a material thereof and the casing (outer cylinder) use aluminum as a material thereof. The components are fastened to each other by bolts and sealed by an O-ring in order to maintain a vacuum property during assembly of the vacuum pump. Accordingly, a weight of the vacuum pump can be reduced while maintaining strength of the inlet port flange.

Claims9

Dependent claims

A vacuum pump, comprising:

an inlet port flange to be coupled to an apparatus;
a casing which functions as a housing for covering internal members;
an outlet port;
a base portion;
and
a rotating portion which is enclosed by and rotatably supported by the casing and the base portion, wherein
the inlet port flange and the casing are formed as separate components, the casing is made of aluminum, and the inlet port flange and the casing are fastened to each other.

4 more elements

Dependencies are inferred from the claim text.

Vacuum pump, casing, and inlet port flange

Life of this patent

Vacuum pump, casing, and inlet port flange

Life of this patent

Abstract

Claims9