Patent US3708959A successfully refreshed from Google Patents.
US3708959A
Expired / Lapsed
US
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Method for separating oil from compressed gas
Assignee: MARSHALL INDUSTRIES Inc
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Filing: 1971-07-09
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Granted: 1973-01-09
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Expires: 1991-07-09
Abstract
Abstract A refrigeration system is disclosed having a compressor of the screw type, and a stream of compressed gas and oil mist is used to cool the compressor and the motor. The oil is separated by passing the stream of refrigerant gas and oil through a unit which subjects the oil-laden gas to a thorough oil-separating treatment without restricting the flow of the oil-free gas.
Inventors
- 👤 H Soumerai
- 👤 J Blatt
- 👤 H Moody
- 👤 C Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:03
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0027; B01D46/003; B01D46/0031; B01D46/24; B01D2275/00; B01D2275/10; B01D2275/105
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
A method as in claim 1 which includes the initial step of producing a gas stream with an annular flow of gas, and said step of passing said oil-free gas stream comprises the step of flowing the oil-free gas stream radially inwardly of said oil entraining gas stream.
Claim 2
Dependent Claim
23 words
The method as described in claim 1 wherein said circuitous flow paths and said surfaces are formed by providing a body of mesh.
Claim 3
Dependent Claim
37 words
The method as described in claim 3 wherein the gas enters said receiving zone in a stream which has a central axis, and which includes the initial step of deflecting the stream radially outwardly by baffle means.
Claim 4
Dependent Claim
49 words
The method as described in claim 1 which includes the initial step of deflecting the flow of gas to change the general direction of the flow substantially 90* and thence substantially back to the original general direction of flow and thereby direct the oil-laden gas toward said separating zone.
Claim 5
Dependent Claim
32 words
The method as described in claim 5 wherein said discharge zone comprises an unobstructed passageway which extends in the direction of the original flow of the compressed gas from said receiving zone.
Claim 6
Independent Claim
177 words
A method of separating oil from compressed gas comprising the steps of, producing two-phase liquid flow in a stream having different concentrations of the phases in the cross-section thereof, at one side of which there is substantially oil-free gas and at the other side of which there is oil-laden gas, separating said oil-free gas from said oil-laden gas to produce separate streams, directing said oil-free gas stream along a substantially unobstructed path to an outlet of a discharge zone, separately directing said oil-laden gas stream to said discharge zone outlet through an oil separating zone having substantially increasing cross-section and divided into a multiplicity of circuitous flow paths with a body of mesh having random shaped passages, separating the oil from the gas in said oil-laden gas stream in said separating zone to produce a second oil-free gas stream, directing said second oil-free gas stream from said separating zone to said discharge zone, and joining said second oil-free gas stream with the first mentioned oil-free gas stream in said discharge zone for simultaneous discharge through said outlet.
Claim 7
Dependent Claim
37 words
A method as in claim 7 including the steps of providing a substantial number of surfaces in said separating zone upon which said oil collects and removing said oil from said zone by the aid of gravity.
Claim 8
Dependent Claim
46 words
A method as in claim 7 which includes the step of bypassing said separating zone with said first mentioned oil-free gas stream which comprises the step of changing the direction of flow of said first mentioned oil-free gas stream with respect to said oil-laden gas stream.
Claim 9
Dependent Claim
73 words
A method as in claim 7 wherein said step of producing a two phase flow of gas and oil mist includes the stem of directing said oil-laden gas stream along an annular flow path, and said step of separating said first mentioned oil-free gas stream from said oil-laden gas stream comprises the step of flowing said first mentioned oil-free gas stream radially inwardly of said oil-laden gas stream and towards said discharge zone.
References Cited (Backward Citations)
US3085381A
Cited
US3291385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |