A restraint system (300, 300′, 500) for a vaned diffuser (225) of a turbocharger (100) or other fluid boosting device is provided that can reduce or eliminate losses. The system (300, 300′, 500) uses a structure to provide both a pressure load on the vaned diffuser (225) and a seal for the vaned dif
A restraint system (300, 300′, 500) for a vaned diffuser (225) of a turbocharger (100) or other fluid boosting device is provided that can reduce or eliminate losses. The system (300, 300′, 500) uses a structure to provide both a pressure load on the vaned diffuser (225) and a seal for the vaned diffuser (225). The structure can be a fluoroelastomer O-ring (350, 350′, 550). The O-ring (350, 350′, 550) can be positioned at least partially in a channel (325, 325′, 525) formed in at least one of the diffuser ring (206, 206′), the compressor housing (103) and the center housing (102).
대표청구항▼
1. A compressor section for a fluid boosting device (100), the compressor section comprising: a compressor housing (103) defining at least in part an impeller chamber (321), a diffuser (225) and a volute (230);a compressor impeller (121) mounted in the compressor housing (103);a diffuser ring (206,
1. A compressor section for a fluid boosting device (100), the compressor section comprising: a compressor housing (103) defining at least in part an impeller chamber (321), a diffuser (225) and a volute (230);a compressor impeller (121) mounted in the compressor housing (103);a diffuser ring (206, 206′) having a plurality of compressor vanes (207) positioned in the diffuser (225); anda restraint system (300, 300′, 500) that seals the diffuser ring (206, 206′) and biases the diffuser ring (206, 206′) thereby abutting the plurality of compressor vanes (207) against an opposing wall of the diffuser (225), the restraint system (300, 300′, 500) being defined by a single O-ring (350, 350′, 550). 2. The compressor section of claim 1, wherein the O-ring (350, 350′, 550) is made from a fluoroelastomer. 3. The compressor section of claim 1, wherein the O-ring (350, 350′, 550) is made from a fluorocarbon. 4. The compressor section of claim 1, further comprising a channel (325, 325′, 525) formed in at least one of the diffuser ring (206, 206′), the compressor housing (103) and a backing wall (102′) of a center housing (102), wherein the O-ring (350, 350′, 550) is positioned at least partially in the channel (325, 325′, 525). 5. The compressor section of claim 1, wherein the O-ring (350, 350′, 550) is radially aligned with a middle portion of the plurality of compressor vanes (207). 6. The compressor section of claim 4, wherein the channel (325, 325′, 525) is dove-tailed. 7. The compressor section of claim 1, further comprising a channel (325, 325′, 525) formed in the diffuser ring (206, 206′) on a surface opposite to the plurality of compressor vanes (207), wherein the O-ring (350, 350′, 550) is positioned at least partially in the channel (325, 325′, 525). 8. A turbocharger (100) comprising: a turbine housing (101) having a turbine rotor (104) and a turbine inlet (109);a compressor housing (103) defining at least in part an impeller chamber (321), a diffuser (225) and a volute (230);a compressor impeller (121) mounted in the compressor housing (103) and being operably connected to a turbine rotor (104) for driving of the compressor impeller (121);a diffuser ring (206, 206′) having a plurality of compressor vanes (207) positioned in the diffuser (225); anda restraint system (300, 300′, 500) that seals the diffuser ring (206, 206′) and biases the diffuser ring (206, 206′) thereby abutting the plurality of compressor vanes (207) against an opposing wall of the diffuser (225), the restraint system (300, 300′, 500) being defined by a single O-ring (350, 350′, 550). 9. The turbocharger (100) of claim 8, wherein the O-ring (350, 350′, 550) is made from a fluoroelastomer. 10. The turbocharger (100) of claim 8, wherein the O-ring (350, 350′, 550) is made from a fluorocarbon. 11. The turbocharger (100) of claim 8, further comprising a channel (325, 325′, 525) formed in at least one of the diffuser ring (206, 206′), the compressor housing (103) and a backing wall (102′) of a center housing (102), wherein the O-ring (350, 350′, 550) is positioned at least partially in the channel (325, 325′, 525). 12. The turbocharger (100) of claim 8, wherein the O-ring (350, 350′, 550) is radially aligned with a middle portion of the plurality of compressor vanes (207). 13. The turbocharger (100) of claim 11, wherein the channel (325, 325′, 525) is dove-tailed. 14. The turbocharger (100) of claim 8, further comprising a channel (325, 325′, 525) formed in the diffuser ring (206, 206′) on a surface opposite to the plurality of compressor vanes (207), wherein the O-ring (350, 350′, 550) is positioned at least partially in the channel (325, 325′, 525). 15. The compressor section of claim 1, wherein the O-ring (350, 350′, 550) has a compression set with retention of more than 90% of its original sealing force after being subjected to 100 hours in air at 150° C. 16. The turbocharger (100) of claim 8, wherein the O-ring (350, 350′, 550) has a compression set with retention of more than 90% of its original sealing force after being subjected to 100 hours in air at 150° C.
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이 특허에 인용된 특허 (11)
Gottemoller Paul (Lockport IL), Centrifugal compressor with aerodynamically variable geometry diffuser.
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