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US 11,067,080 B2Granted
Low cost scroll compressor or vacuum pump
AssigneeAir Squared, Inc.
InventorsJoshua R. Mesward, Scott D. Farnham
Life of this patent
Estimating the term…
Abstract
A low cost scroll device and methods of manufacturing the same are described. The scroll device includes, for example, a drive pin hole and bearing bores machined into a scroll of the scroll device from the same side as the involute of the scroll; idler shaft assemblies with no more than one bearing in the orbiting scroll for mechanically coupling the orbiting scroll to the fixed scroll; and an epoxy coating applied using a process that requires assembly of the scroll device only once.
Claims18
A scroll device comprising:
- a fixed scroll comprising a first side opposite a second side, the first side comprising a first involute and the second side comprising a plurality of cooling fins;
- an orbiting scroll comprising a second involute, the orbiting scroll mounted to the fixed scroll via a mechanical coupling and configured to orbit relative to the fixed scroll on the mechanical coupling;
- at least two retaining screws positioned to secure a single bearing of the mechanical coupling in a first bearing bore of one of the fixed scroll and the orbiting scroll, and at least two additional retaining screws positioned to secure a plurality of bearings of the mechanical coupling in a second bearing bore of another of the fixed scroll and the orbiting scroll;
- a motor operably connected to the orbiting scroll;
- and
- a cooling fan mounted to bosses extending from the second side of the fixed scroll with a plurality of fasteners.
3 more elements
A semi-hermetic scroll device comprising:
- a fixed scroll comprising a first involute;
- an orbiting scroll comprising a second involute, the orbiting scroll mounted to the fixed scroll via a mechanical coupling and configured to orbit relative to the fixed scroll on the mechanical coupling, wherein the mechanical coupling comprises three idler shaft assemblies, each idler shaft assembly comprising:
- no more than one bearing secured within a bearing bore of the orbiting scroll by at least two retaining screws;
- a plurality of bearings secured within a bearing bore of the fixed scroll by at least two additional retaining screws;
- and
- an eccentric shaft secured to the plurality of bearings and the one bearing;
- a motor operably connected to the orbiting scroll, the motor comprising a stator and a rotor;
- and
- a can comprising a cylindrical body and a cap, the cylindrical body positioned between the stator and the rotor and the cap covering one end of the rotor, the can configured to prevent leakage of a working fluid through the motor.
6 more elements
A scroll device comprising:
- an orbiting scroll comprising an involute, a drive pin hole, and a plurality of first bearing bores all machined from a single side of the orbiting scroll;
- a fixed scroll comprising an involute and a plurality of second bearing bores;
- a plurality of idler shaft assemblies, each idler shaft assembly comprising:
- at least one first bearing secured within one of the plurality of first bearing bores by at least two retaining screws;
- at least one second bearing secured within one of the plurality of second bearing bores by at least two additional retaining screws;
- and
- an eccentric idler shaft secured to the at least one first bearing and the at least one second bearing;
- a drive pin secured within the drive pin hole;
- and
- a motor operably connected to the drive pin and configured to cause the orbiting scroll to orbit relative to the fixed scroll.
7 more elements
Dependencies are inferred from the claim text.