US3653225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-cooling system and its uses
Assignee: Entreprise de Recherches et dActivites Petrolieres SA
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Filing: 1969-07-25
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Granted: 1972-04-04
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Expires: 1989-07-25
Abstract
Abstract A gas-cooling system wherein a pressurized gas jet delivered by an injector across a break in continuity is collected in one or more tubes whose inlet aperture faces the injector and in which the collected gas is pulsated and heated by compressive wave phenomena to a temperature higher than that of the original jet, while impellent gas, removed at the level of the break in continuity via a suitable by-pass, is expanded in relation to the original jet and brought to a lower temperature than the latter.
Inventors
- 👤 Philippe Albert Hippol Marchal
- 👤 Jacques Louis Paul Simonnet
- 👤 Jean Prudent Fernand R Verrien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:24
CPC Classifications
F; F25; F25B; F25B9/00; F25B9/06; F25B9/065; C; C10; C10G; C10G5/00; C10G5/06; F25J; F25J3/00; F25J3/06; F25J3/0605; F25J3/061; F25J3/063; F25J3/0635; F25J3/065; F25J2240/00; F25J2240/60; F25J2270/00; F25J2270/90; F25J2270/908; F25J2270/91
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
114 words
A gas-cooling system of the pulse tube type wherein a gas undergoes intermittent temperature raising compression and temperature lowering expansion, comprising a nozzle supplied with gas under pressure and from which issues a gaseous jet, at least one pulse tube having a gas collecting end portion which is adjacent to but spaced from said nozzle by a free gas unductedly traversed by said jet and a ''''hot'''' body portion which extends said end portion outward from said gap, a ''''cool'''' chamber communicating with said gap and having wall portions spaced therefrom whereby said gap extends within said chamber at a distance from said wall portions thereof, and means for tapping fluid from said chamber.
Claim 2
Dependent Claim
114 words
A gas-cooling system of the pulse tube type wherein a gas undergoes intermittent temperature raising compression and temperature lowering expansion, comprising a nozzle supplied with gas under pressure and from which issues a gaseous jet, at least one pulse tube having a gas collecting end portion which is adjacent to but spaced from said nozzle by a free gas unductedly traversed by said jet and a ''''hot'''' body portion which extends said end portion outward from said gap, a ''''cool'''' chamber communicating with said gap and having wall portions spaced therefrom whereby said gap extends within said chamber at a distance from said wall portions thereof, and means for tapping fluid from said chamber.
Claim 3
Dependent Claim
35 words
System as claimed in claim 1, further comprising flange-like ''''shock'''' plates spacedly fitted opposite each other respectively on said nozzle and said end portion to bound said gap endwise while leaving the same free sidewise.
Claim 4
Dependent Claim
66 words
System as claimed in claim 1, comprising a plurality of pulse tubes having gas collecting end portions which are juxtaposed in fan-wise arrangement with sharp leading edges separating adjacent end portions, means for permanently supplying gas under pressure to said nozzle whereby a continuous jet issues therefrom, and means for periodically oscillating said jet in the plane of said fan-wise arrangement to sweep said end portions.
Claim 5
Dependent Claim
24 words
System as claimed in claim 3, whErein said gas collecting end portions have slot-like inlet sections extending substantially perpendicularly to said jet oscillation plane.
Claim 6
Dependent Claim
38 words
System as claimed in claim 4, wherein said inlet sections are of rectangular shape and so is the cross-section of said end portions, with the major sides of the rectangles being substantially perpendicular to said jet oscillation plane.
Claim 7
Dependent Claim
15 words
System as claimed in claim 3, wherein said pulse tubes are in an odd number.
Claim 8
Dependent Claim
22 words
System as claimed in claim 3, wherein said jet oscillating means comprises a fluidic switch-valve, and pilot means for controlling the same.
Claim 9
Dependent Claim
60 words
System as claimed in claim 7, wherein said pilot means comprise ducts extending on both sides of said nozzle and opening into said chamber at opposite sides of said gap, an enclosure communicating with each of said ducts opposite from said opening thereof, and a constriction in each of said ducts intermediate said opening thereof and said enclosure communicating therewith.
Claim 10
Dependent Claim
28 words
System as claimed in claim 8, further comprising an aperture in said chamber adjacent said opening of each of said ducts and separated therefrom by a sharp edge.
Claim 11
Dependent Claim
21 words
System as claimed in claim 1, wherein said body portion comprises a variable-area outlet opposite from said gas collecting end portion.
Claim 12
Dependent Claim
14 words
System as claimed in claim 1, wherein said body portion comprises external cooling fins.
Claim 13
Dependent Claim
15 words
System as claimed in claim 1, wherein said body portion comprises an intermediate enlarged section.
Claim 14
Dependent Claim
15 words
System as claimed in claim 1, wherein said body portion comprises an intermediate coil-shaped section.
Claim 15
Dependent Claim
30 words
System as claimed in claim 1, wherein said gas under pressure supplied to said nozzle is natural gas containing gasoline, whereby said fluid tapped from said chamber contains condensed gasoline.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |