Patent US4416583A successfully refreshed from Google Patents.
US4416583A
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Centrifugal vapor compressor
Assignee: Carrier Corp
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Filing: 1982-07-02
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Granted: 1983-11-22
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Expires: 2002-07-02
Abstract
Abstract A centrifugal vapor compressor and a method of assembling the same. The compressor comprises a housing defining an inlet passage and a diffuser passage, and an impeller blade rotatably mounted in the housing between the inlet and diffuser thereof. The compressor further comprises an annular recess defined by the housing and in communication with the diffuser passage, and an annular diffuser valve supported by the housing for axial movement within the annular recess and the diffuser passage between minimum and maximum throttling positions. A stop member is located adjacent to the housing and includes an end section axially located forward of the annular recess to limit forward axial movement of the diffuser valve. A fastening member is radially located external of the annular recess and disengagably secures the stop member to the housing.
Inventors
- 👤 Edson H. Byrns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:06
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/143; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/464; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
245 words
A centrifugal vapor compressor comprising: a housing defining an inlet passage, a diffuser passage, and a diffuser valve recess extending from the diffuser passage; an impeller rotatably mounted in said housing on an axially extending shaft and including a radially extending impeller blade; an annular diffuser valve extending around the impeller blade and supported by the housing for axial movement within the diffuser valve recess and the diffuser passage between minimum and maximum throttling positions, said annular diffuser valve having an outside annular face facing the diffuser passage, at least one axially extending, radially projecting face extending radially outward from said outside annular face, and a flange radially extending from each of said axially extending, radially projecting faces, each of said flanges having a radially extending surface facing the diffuser passage; stop members mounted on the housing in the diffuser passage portion of the housing, each of said stop members having a surface facing the diffuser passage which is coplanar with the walls of the diffuser passage and each of said stop members positioned for engagement with one of the axially extending, radially projecting faces of the diffuser valve to limit movement of the diffuser valve circumferentially about its axis and positioned for engagement with the radially extending surface of each of the flanges of the diffuser valve to limit axial movement of the diffuser valve at the maximum throttling position; and fastening means for disengagably securing each of the stop members to the housing.
Claim 2
Dependent Claim
245 words
A centrifugal vapor compressor comprising: a housing defining an inlet passage, a diffuser passage, and a diffuser valve recess extending from the diffuser passage; an impeller rotatably mounted in said housing on an axially extending shaft and including a radially extending impeller blade; an annular diffuser valve extending around the impeller blade and supported by the housing for axial movement within the diffuser valve recess and the diffuser passage between minimum and maximum throttling positions, said annular diffuser valve having an outside annular face facing the diffuser passage, at least one axially extending, radially projecting face extending radially outward from said outside annular face, and a flange radially extending from each of said axially extending, radially projecting faces, each of said flanges having a radially extending surface facing the diffuser passage; stop members mounted on the housing in the diffuser passage portion of the housing, each of said stop members having a surface facing the diffuser passage which is coplanar with the walls of the diffuser passage and each of said stop members positioned for engagement with one of the axially extending, radially projecting faces of the diffuser valve to limit movement of the diffuser valve circumferentially about its axis and positioned for engagement with the radially extending surface of each of the flanges of the diffuser valve to limit axial movement of the diffuser valve at the maximum throttling position; and fastening means for disengagably securing each of the stop members to the housing.
Claim 3
Dependent Claim
24 words
The centrifugal vapor compressor as defined by claim 1 wherein said axially extending, radially projecting face of said diffuser valve has an arcuate shape.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |