Scroll machine with brushless permanent magnet motor
AssigneeEmerson Climate Technologies, Inc.
InventorsRoy Doepker, John Elson, William Ramey
Life of this patent
Estimating the term…
Abstract
A scroll machine is powered by a brushless permanent magnet motor. The rotor for the motor includes a rotor body formed by a plurality of laminations and an upper and lower counterweight made of zinc and located at opposite ends of the rotor body. An attachment member extends through the counterweights and the rotor body to secure the counterweights and the plurality of laminations. The counterweights include steel inserts which cooperate with the attachment member to provide a metal to metal clamping for the rotor body with a steel connection being maintained through the rotor.
Claims28
A scroll machine comprising:
- a first scroll member having a first end plate and a first spiral wrap projecting outwardly from said first end cap;
- a second scroll member having a second end plate and a second spiral wrap projecting outwardly from said second end cap, said second scroll wrap being intermeshed with said first scroll wrap;
- a crankshaft engaging one of said scroll members for causing said scroll members to orbit relative to one another whereby said spiral wraps will create pockets of progressively changing volume between a suction pressure zone and a discharge pressure zone;
- and
- a rotor assembly attached to said crankshaft, said rotor assembly comprising:
- a rotor body attached to said crankshaft;
- a first counterweight disposed at a first end of said rotor body;
- a second counterweight disposed at a second end of said rotor body;
- an attachment member extending through said first counterweight and said second counterweight, said attachment member extending through said rotor body.
A rotor assembly comprising:
- a rotor body attached to said crankshaft;
- a first counterweight disposed at a first end of said rotor body;
- a second counterweight disposed at a second end of said rotor body;
- an attachment member extending through said first counterweight and said second counterweight, said attachment member extending through said rotor body.
Dependencies are inferred from the claim text.