US3829235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbocharger compressor with dual collector chambers
Assignee: Wallace Murray Corp
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Filing: 1971-11-26
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Granted: 1974-08-13
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Expires: 1991-11-26
Abstract
Abstract Disclosed is a single stage, centrifugal compressor component of a turbocharger for an internal combustion engine in which the vanes of the compressor wheel are formed to provide frontal vane portions extending radially beyond the adjoining vane portions. An internal wall of the compressor wheel cover forms two discrete chambers or passages, one accommodating air flow induced by the radially extending vane portions, the other accommodating flow induced by the adjoining vane portions. Heat exchange may occur across the wall between the two air flow paths.
Inventors
- 👤 W Woollenweber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:24
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/4206; F04D25/00; F04D25/16; F04D29/26; F04D29/28; F04D29/284; F04D29/285; F04D29/403; F04D29/58; F04D29/582; F04D29/5826; F04D29/584; F05; F05D; F05D2220/00; F05D2220/40; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
351 words
A turbocharger compressor of the single stage centrifugal type having a compressor wheel rotated by a drive shaft and a cover enclosing said wheel and having an intake passage aligned with the shaft axis, said compressor wheel having radially extending vanes thereon for moving air axially through said intake passage and impelling it radially outwardly transverse to said shaft axis, said vanes each having a frontal portion extending radially beyond the adjoining vane portion, a wall within said cover defining two concentric discrete collector chambers surrounding said wheel, said wall extending to provide a circular common boundary between said two chambers closely adjacent the junction of said radially extending frontal portion and the said adjoining portion of said vanes, whereby said radially extending frontal portion of the vanes moves air into one of said chambers and the said adjoining portions of the vanes move air into the other of said chambers, said wall defining said collector chambers being provided with rib elements axially extending into said one of the chambers and over which the air in the chamber travels in a circular path to increase the cooling effect of said wall and increase the heat transfer between said chambers, said frontal portion of each of said vanes being separate from but in edge-engagement with the corresponding adjoining vane portion, said frontal vane portions extending radially from a hub separate from but mounted on said drive shaft in abutting relation to the compressor wheel portion carrying said adjoining vane portions, the rear face of said hub and the trailing edges of said frontal vane portions being slightly undercut, whereby as said hub is pressed against the adjacent compressor wheel portion on said shaft, said frontal vane portions apply a vibration damping force against each of the adjoining vane portions with said undercut being formed by providing the surface defined by the rear face of said hub and the adjacent trailing edges of said frontal vane portions with a slightly conical contour and a locking nut threaded on said shaft and engaging the hub to press it against said adjacent compressor wheel portion.
Claim 2
Dependent Claim
351 words
A turbocharger compressor of the single stage centrifugal type having a compressor wheel rotated by a drive shaft and a cover enclosing said wheel and having an intake passage aligned with the shaft axis, said compressor wheel having radially extending vanes thereon for moving air axially through said intake passage and impelling it radially outwardly transverse to said shaft axis, said vanes each having a frontal portion extending radially beyond the adjoining vane portion, a wall within said cover defining two concentric discrete collector chambers surrounding said wheel, said wall extending to provide a circular common boundary between said two chambers closely adjacent the junction of said radially extending frontal portion and the said adjoining portion of said vanes, whereby said radially extending frontal portion of the vanes moves air into one of said chambers and the said adjoining portions of the vanes move air into the other of said chambers, said wall defining said collector chambers being provided with rib elements axially extending into said one of the chambers and over which the air in the chamber travels in a circular path to increase the cooling effect of said wall and increase the heat transfer between said chambers, said frontal portion of each of said vanes being separate from but in edge-engagement with the corresponding adjoining vane portion, said frontal vane portions extending radially from a hub separate from but mounted on said drive shaft in abutting relation to the compressor wheel portion carrying said adjoining vane portions, the rear face of said hub and the trailing edges of said frontal vane portions being slightly undercut, whereby as said hub is pressed against the adjacent compressor wheel portion on said shaft, said frontal vane portions apply a vibration damping force against each of the adjoining vane portions with said undercut being formed by providing the surface defined by the rear face of said hub and the adjacent trailing edges of said frontal vane portions with a slightly conical contour and a locking nut threaded on said shaft and engaging the hub to press it against said adjacent compressor wheel portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |