Low vibration scroll compressor for aircraft application
AssigneeHoneywell International Inc.
InventorsBenjamin Tang, Niall McCabe
Life of this patent
Estimating the term…
Abstract
A scroll compressor includes a fixed scroll; an orbiting scroll that interfaces the fixed scroll; an Oldham ring that interfaces the orbiting scroll and has a pre-unbalanced force profile; and a motor shaft that interfaces the Oldham ring. The Oldham ring pre-unbalanced force profile is in the form of a sine wave. One of the shaft and the orbiting scroll has an imbalance weight portion; wherein the imbalance weight portion provides a weighted force profile that is 180° opposite of the pre-unbalanced force profile of the Oldham ring and produces in the Oldham ring a post-unbalanced force profile that is substantially a flat line.
Claims20
A scroll compressor, comprising:
- a fixed scroll;
- an orbiting scroll that interfaces the fixed scroll;
- an Oldham ring that interfaces the orbiting scroll and has a pre-unbalanced force profile;
- a motor shaft that interfaces the Oldham ring;
- wherein one of the motor shaft and the orbiting scroll has an imbalance weight portion;
- wherein the imbalance weight portion:
- has a weighted force profile that is about 175° to about 185° opposite of the pre-unbalanced force profile of the Oldham ring;
- and
- produces in the Oldham ring a post-unbalanced force profile that is substantially a flat line.
A scroll compressor, comprising:
- a fixed scroll;
- an orbiting scroll having a base portion, wherein the orbiting scroll interfaces the fixed scroll;
- an Oldham ring that interfaces the orbiting scroll and has a pre-unbalanced force profile in the form of a sine wave;
- a motor shaft having a plate portion, wherein the motor shaft interfaces the Oldham ring;
- wherein the plate portion of the motor shaft and the base portion of the orbiting scroll define boundaries of an imbalance weight area;
- wherein the imbalance weight area includes an imbalance weight portion having a mass characterization that is equal to about 45% to about 55% of a mass of the Oldham ring;
- wherein the imbalance weight area converts the Oldham ring pre-unbalanced force profile to an Oldham ring post-unbalanced force profile that is in the form of a substantially flat line.
A scroll compressor, comprising:
- a motor shaft having a plate portion;
- a fixed scroll that interfaces the shaft;
- an orbiting scroll having a base portion, wherein the orbiting scroll interfaces the fixed scroll;
- an Oldham ring that interfaces the orbiting scroll and has a pre-unbalanced force profile in the form of a sine wave;
- wherein the plate portion of the motor shaft and the base portion of the orbiting scroll define boundaries of an imbalance weight area;
- wherein the imbalance weight area has a mass moment profile in the form of a sine wave that is about 175° to about 185° opposite of the sine wave of the pre-unbalanced force profile;
- wherein the imbalance weight area reduces an amplitude of the sine wave of the pre-unbalanced force profile by about 45% to about 55%.
Dependencies are inferred from the claim text.