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US 9,771,931 B2Granted
Spin pump with spun-epicyclic geometry
AssigneeChart Inc.
InventorJohn Corey
Life of this patent
Estimating the term…
Abstract
The subject matter described herein relates to a spin pump that includes a combination of a compressor and a vacuum pump on respective pistons extending from a common crankshaft in a rotating housing. Related methods, apparatuses, systems, techniques and articles are also described.
Claims32
A pump system with a compressor pump and a vacuum pump on a common shaft, comprising:
- a rotor that rotates about a first axis, the rotor having a first and a second radial piston bore each containing at least one piston, wherein the first radial piston bore serves as a vacuum pump and the second radial piston bore serves as a compressor pump;
- a crankshaft defining a second axis parallel to and offset from the first axis, wherein the crankshaft rotates about the second axis and drives rotation of the rotor;
- wherein the rotor is formed by a first piece and a second piece that mate to collectively form the rotor, wherein the first piece includes a first tongue and a second tongue that define a first space and a second space between the first tongue and the second tongue, and wherein the second piece includes a third tongue and a fourth tongue, and wherein the third tongue and the fourth tongue are positioned within the first space and the second space when the first piece and second piece are mated together;
- wherein the first radial piston bore extends at least partially through the first tongue and the second tongue, and the second radial piston bore extends at least partially through the third tongue and the fourth tongue.
1 more element
A gas pump, comprising:
- a rotor that rotates about a first axis, the rotor defining a pair of piston bores extending radially outward from the first axis, wherein the pair of piston bores include a first radial piston bore and a second radial piston bore;
- the first piston in a first piston bore;
- the second piston in a second piston bore;
- a crankshaft coupled to the rotor, wherein the crankshaft rotates about a second axis parallel to and offset from the first axis, and wherein the crankshaft drives the first and second pistons, wherein the first piston and second piston each defines a pump chamber in their respective piston bores;
- wherein the rotor is formed by a first piece and a second piece that mate to collectively form the rotor, wherein the first piece includes a first tongue and a second tongue that define a first space and a second space between the first tongue and the second tongue, and wherein the second piece includes a third tongue and a fourth tongue, and wherein the third tongue and the fourth tongue are positioned within the first space and the second space when the first piece and second piece are mated together;
- wherein the first radial piston bore extends at least partially through the first tongue and the second tongue, and the second radial piston bore extends at least partially through the third tongue and the fourth tongue.
3 more elements
A method of constructing a rotor for use in a pump, comprising:
- inserting a pair of single piece, double ended pistons into respective radial piston bores of a first piece and second piece of the rotor such that the first piece of the rotor contains a first piston and the second piece of the rotor contains the second piston, wherein the first piece includes a first tongue and a second tongue that define a first space and a second space between the first tongue and the second tongue, and wherein the second piece includes a third tongue and a fourth tongue, and wherein the third tongue and the fourth tongue are positioned within the first space and the second space when the first piece and second piece are mated together wherein a first radial piston bore extends at least partially through the first tongue and the second tongue, and a second radial piston bore extends at least partially through the third tongue and the fourth tongue;
- positioning the first piece of the rotor with the inserted piston and the second piece of the rotor with the inserted piston over a crankshaft;
- engaging the second piece of the rotor with the first piece of the rotor so that the pistons are seated within the piston bores and mounted to eccentrics of the crankshaft.
Dependencies are inferred from the claim text.