US3841789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable diffuser
Assignee: Motors Liquidation Co
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Filing: 1973-09-17
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Granted: 1974-10-15
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Expires: 1993-09-17
Abstract
Abstract A centrifugal compressor has a diffuser in the form of a ring with diverging passages extending through the ring generally tangentially to the periphery of the compressor rotor. The relation of area to distance along each passage is varied by a tapered centerbody, each centerbody being mounted on a plunger reciprocably guided on the diffuser body. The centerbodies are concurrently adjusted longitudinally of the passages by an actuating ring rotatable about the axis of the compressor engaging the plungers.
Inventors
- 👤 L Corrigan
- 👤 E Spears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:16
CPC Classifications
F; 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: 8
Claim 1
Independent Claim
129 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout a substantial portion of the length of each diffusing passage comprising, in combination, a tapering centerbody extending axially of each passage; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating means on the body coupled to the centerbodies for concurrent movement of the centerbodies.
Claim 2
Dependent Claim
129 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout a substantial portion of the length of each diffusing passage comprising, in combination, a tapering centerbody extending axially of each passage; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating means on the body coupled to the centerbodies for concurrent movement of the centerbodies.
Claim 3
Dependent Claim
140 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout a substantial portion of the length of each diffusing passage comprising, in combination, a tapering centerbody extending axially of each passage; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating ring means mounted on the body rotatable about the axis of rotation of the rotor and engaging the plungers for concurrent movement of the centerbodies.
Claim 4
Dependent Claim
140 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout a substantial portion of the length of each diffusing passage comprising, in combination, a tapering centerbody extending axially of each passage; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating ring means mounted on the body rotatable about the axis of rotation of the rotor and engaging the plungers for concurrent movement of the centerbodies.
Claim 5
Dependent Claim
145 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor and diverging outwardly from a throat to an outlet; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout the portion of each diffusing passage from the throat to the outlet comprising, in combination, a tapering centerbody extending from the throat to the outlet in each passage; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating means on the body coupled to the plungers for concurrent movement of the centerbodies.
Claim 6
Dependent Claim
145 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor and diverging outwardly from a throat to an outlet; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout the portion of each diffusing passage from the throat to the outlet comprising, in combination, a tapering centerbody extending from the throat to the outlet in each passage; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating means on the body coupled to the plungers for concurrent movement of the centerbodies.
Claim 7
Dependent Claim
156 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor and diverging outwardly from a throat to an outlet; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout the portion of each diffusinG passage from the throat to the outlet comprising, in combination, a tapering centerbody in each passage extending from the throat to the outlet; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating ring means mounted on the body rotatable about the axis of rotation of the rotor and engaging the plungers for concurrent movement of the centerbodies.
Claim 8
Dependent Claim
156 words
A centrifugal machine comprising a rotor adapted to impel a fluid and a stator adapted to receive and diffuse the fluid impelled by the rotor; the stator comprising a body defining an annular array of diffusing passages extending generally tangentially outward from adjacent the periphery of the rotor and diverging outwardly from a throat to an outlet; the machine being characterized by means for concurrently varying the relation of cross-sectional area to distance from the entrance to the passage throughout the portion of each diffusinG passage from the throat to the outlet comprising, in combination, a tapering centerbody in each passage extending from the throat to the outlet; a reciprocably mounted plunger fixed to and supporting each centerbody; guide means on the body guiding each plunger for reciprocating movement; and actuating ring means mounted on the body rotatable about the axis of rotation of the rotor and engaging the plungers for concurrent movement of the centerbodies.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |