Patent US4741177A successfully refreshed from Google Patents.
US4741177A
Expired / Lapsed
US
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Oil separator in a coolant system
Assignee: Stal Refrigeration AB
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Filing: 1987-01-29
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Granted: 1988-05-03
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Expires: 2007-01-29
Abstract
Abstract In coolant systems oil mixed with the coolant is often removed in a separate oil separator on the high-pressure side of the compressor. In order to obtain a compact design in a coolant system comprising a unit including an oil-injection rotary compressor, a pressure-gas cooled driven motor and an oil separator, the oil separator is applied directly to the drive motor connected to the rotary compressor.
Inventors
- 👤 Rune V. Glanvall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:33
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02; F04C29/026
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
An apparatus for use in compressing an operating medium in a coolant system, said apparatus comprising an oil-injection rotary compressor that provides a mixture of oil and compressed operating medium, a drive motor connected to said oil-injection rotary compressor, said drive motor including a drive shaft having an end which is remote from said oil-injection rotary compressor, and at least one separation plate connected to the remote end of said drive shaft and against which the mixture of oil and compressed operating medium flows, each separation plate including a hole therein, rotation of each said separation plate by rotation of said drive shaft causing oil in said mixture of oil and compressed operating medium to be forced radially outwardly while the compressed operating medium passes radially inwardly thereof and through the hole therein, such that the oil and the compressed operating medium are separated.
Claim 2
Independent Claim
144 words
An apparatus for use in compressing an operating medium in a coolant system, said apparatus comprising an oil-injection rotary compressor that provides a mixture of oil and compressed operating medium, a drive motor connected to said oil-injection rotary compressor, said drive motor including a drive shaft having an end which is remote from said oil-injection rotary compressor, and at least one separation plate connected to the remote end of said drive shaft and against which the mixture of oil and compressed operating medium flows, each separation plate including a hole therein, rotation of each said separation plate by rotation of said drive shaft causing oil in said mixture of oil and compressed operating medium to be forced radially outwardly while the compressed operating medium passes radially inwardly thereof and through the hole therein, such that the oil and the compressed operating medium are separated.
Claim 3
Dependent Claim
12 words
An apparatus according to claim 1, wherein each separate plate is conical.
Claim 4
Dependent Claim
33 words
An apparatus according to claim 1, wherein at least two separation plates are connected to the remote end of said drive shaft, each pair of adjacent separation plates being separated by a gap.
Claim 5
Dependent Claim
26 words
An apparatus according to claim 3, wherein each separation plate is provided with at least two diametrically located holes for through flow of compressed operating medium.
Claim 6
Dependent Claim
19 words
An apparatus according to claim 3, wherein each pair of adjacent separation plates is separated by a spacer element.
Claim 7
Dependent Claim
27 words
An apparatus according to claim 3, wherein at least one separation plate of each pair of adjacent separation plates includes a notch to provide said gap therebetween.
References Cited (Backward Citations)
US2074323A
Cited
US3408828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |