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US 8,075,293 B2Granted
Rotary blower with corrosion-resistant abradable coating
AssigneeEaton Corporation
InventorDaniel R. Ouwenga
Life of this patent
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Abstract
A rotary blower rotor includes a rotor body having a corrosion-resistant coating covering the rotor body. An abradable coating covers at least a portion of the corrosion-resistant coating for providing an essentially zero operating clearance for increasing a volumetric efficiency of the rotary blower. A rotary blower including a rotor with a corrosion-resistant coating is also provided.
Claims18
A rotary blower rotor, comprising:
- a rotor body;
- a corrosion-resistant coating covering the rotor body, wherein the corrosion-resistant coating comprises an electrolytic ceramic coating;
- and
- an abradable coating covering at least a portion of the corrosion-resistant coating to form an outer surface of the rotor body for providing an essentially zero operating clearance for increasing a volumetric efficiency of the rotary blower, wherein the abradable coating is a mixture of an epoxy polymer resin matrix and a solid lubricant.
1 more element
A rotary blower rotor, comprising:
- a rotor body;
- a corrosion-resistant coating comprising an electrolytic ceramic coating adhered to and covering the rotor body;
- and
- an abradable coating adhered to and covering at least a portion of the corrosion-resistant coating to form an outer surface of the rotor body for providing an essentially zero operating clearance for increasing a volumetric efficiency of the rotary blower, wherein the abradable coating is a mixture of an epoxy polymer resin matrix and a solid lubricant.
1 more element
A rotary blower, comprising:
- a pair of rotors, each rotor including a corrosion-resistant coating covering the rotors and an abradable coating covering at least a portion of the corrosion-resistant coating to form an outer surface of the rotor body for providing an essentially zero operating clearance for increasing a volumetric efficiency of the rotary blower,
- wherein the corrosion-resistant coating comprises an electrolytic ceramic coating, and the abradable coating comprises a mixture of an epoxy polymer resin matrix and a solid lubricant.
Dependencies are inferred from the claim text.