Patent ID: 11939979
Assignee: COPELAND LP
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 7:
8. A compressor comprising:
a shell defining a first pressure region and a second pressure region;
a first scroll member disposed within the shell and including a first end plate and a first scroll wrap, the first end plate defining a discharge passage in communication with the first pressure region;
a second scroll member including a second end plate and a second scroll wrap, the second scroll wrap meshingly engaging the first scroll wrap to define a compression chamber therebetween; and
a seal assembly fluidly separating the first and second pressure regions from each other,
wherein:
the seal assembly includes a first plate, a second plate, and a sealing member,
the first and second plates and the sealing member are annular and surround the discharge passage,
the first plate includes a plurality of projections, wherein each of the projections extends through a respective one of a plurality of apertures in the second plate,
the sealing member is disposed axially between the first and second plates and sealingly engages the first and second plates to restrict fluid flow from the first pressure region to the second pressure region, wherein the sealing member is disposed radially inward relative to the plurality of projections, and
one of the first plate and the second plate includes an annular protrusion extending therefrom and sealingly engaged with the other of the first plate and second plate to further restrict fluid flow from the first pressure region to the second pressure region,
wherein the second plate includes a plurality of vent holes formed in a base of the second plate and being arranged circumferentially spaced apart surrounding the discharge passage and in communication with the second pressure region, and wherein the protrusion of the one of the first plate and the second plate is sealingly engaged with the other of the first plate and the second plate at a location radially inwardly relative to the plurality of vent holes.