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US 2020/0080561 A1Published application
Lightweight vacuum pump with oxidized surfaces
AssigneeFieldpiece Instruments, Inc.
InventorTinggui Hong
Life of this patent
Estimating the term…
Abstract
A light weight vacuum pump is made with either or all of the stator, rotors and vanes made of aluminum or aluminum alloy that has been subjected to high energy oxidation, such as plasma electrolytic oxidation (PEO), electrolytic plasma oxidation (EPO) or micro-arc oxidation (MAO), to treat and harden the surface.
Claims9
A vacuum pump system comprising:
- a motor;
- and
- a vacuum pump operably connected to the motor, the vacuum pump having one or more rotors and one or more stators formed from material selected from the group consisting of aluminum, aluminum alloy or sintered aluminum powder, wherein the one or more rotors and one or more stators are treated with a high energy oxidation process selected from the group consisting of plasma electrolytic oxidation, electrolytic plasma oxidation, micro-arc oxidation or spark discharge anodizing.
A vacuum pump comprising:
- a stator having a cylindrical volute with a cylindrical inner wall, a first end wall and a second end wall;
- a rotor rotatably disposed within the stator, said rotor having an outer cylindrical surface;
- a vane coupled to the rotor and translatably disposed relative to the rotor, said vane having a sealing surface at a radial outer edge of said vane;
- wherein one or more of the stator, rotor or vane comprises a wear surface comprising aluminum, and at least one wear surface has a Vickers hardness in the range of 1000 to 3000 HV.
1 more element
A vacuum pump system comprising:
- vacuum pump comprising:
- a stator having a cylindrical volute with a cylindrical inner wall, a first end wall and a second end wall;
- a rotor rotatably disposed within the stator, said rotor having an outer cylindrical surface;
- a vane coupled to the rotor and translatably disposed relative to the rotor, said vane having a sealing surface at a radial outer edge of said vane;
- wherein one or more of the stator, rotor or vane comprises a wear surface comprising aluminum, and at least one wear surface has a Vickers hardness in the range of 1000 to 3000 HV;
- a motor operably connected to the vacuum pump;
- wherein the rotor, stator or vane are formed from material selected from the group consisting of aluminum, aluminum alloy or sintered aluminum powder;
- wherein the rotor, stator and vane are treated with a high energy oxidation process selected from the group consisting of plasma electrolytic oxidation, electrolytic plasma oxidation, micro-arc oxidation or spark discharge anodizing.
5 more elements
Dependencies are inferred from the claim text.