Patent US4640667A successfully refreshed from Google Patents.
US4640667A
Expired / Lapsed
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Apparatus for conveying and compressing a gaseous medium
Assignee: Sulzer AG
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Filing: 1985-11-13
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Granted: 1987-02-03
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Expires: 2005-11-13
Abstract
Abstract The apparatus for conveying and compressing a gaseous medium utilizes thermoacoustic oscillations. The oscillations are generated in a tubular cavity by means of a heat source or heat sink with the medium to be conveyed being taken in through a check valve on one side while being exhausted after compression through a second check valve on an opposite side. During operation, the heat is supplied to the medium within the tubular cavity to generate thermoacoustic oscillations. In one embodiment, a plurality of tubes can be disposed in series relative to a common line. Also, the apparatus can be used in combination with a helium liquifying plant.
Inventors
- 👤 Christian Trepp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:15
CPC Classifications
F; F04; F04F; F04F99/00; F25; F25J; F25J1/00; F25J1/0002; F25J1/0005; F25J1/0007; F25J1/003; F25J1/0032; F25J1/0035; F25J1/0037; F25J1/004; F25J1/0047; F25J1/005; F25J1/006; F25J1/0062; F25J1/0065; F25J1/02; F25J1/0201; F25J1/0202; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; F25J1/0279; F25J1/0281; F25J2240/00; F25J2240/60; F25J2270/00; F25J2270/90; F25J2270/908; F25J2270/912
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
In combination a pair of apparati for conveying and compressing a gaseous medium, each apparatus comprising a line for conveying a gaseous medium, a plurality of vessels connected in series to said line, each vessel having a chamber in communication with said line for receiving gaseous medium, heat exchange means disposed about each said vessel for exchanging heat with a gaseous medium in said respective vessel to generate thermoacoustic oscillations therein, and check valves in said line about each said vessel for conveying a compressed gaseous medium through said line in a downstream direction; and a plurality of tubes connected to and between respective vessels of each apparatus to increase the amplitude of oscillation therein.
Claim 2
Dependent Claim
115 words
In combination a pair of apparati for conveying and compressing a gaseous medium, each apparatus comprising a line for conveying a gaseous medium, a plurality of vessels connected in series to said line, each vessel having a chamber in communication with said line for receiving gaseous medium, heat exchange means disposed about each said vessel for exchanging heat with a gaseous medium in said respective vessel to generate thermoacoustic oscillations therein, and check valves in said line about each said vessel for conveying a compressed gaseous medium through said line in a downstream direction; and a plurality of tubes connected to and between respective vessels of each apparatus to increase the amplitude of oscillation therein.
Claim 3
Independent Claim
230 words
An apparatus for conveying an compressing a gaseous medium comprising a first line for conveying a gaseous medium therethrough; at least two duct-like vessels connected to said line in series, each vessel having a chamber in communication with said line for receiving gaseous medium; at least one heat exchanger means disposed about each vessel for exchanging heat with a gaseous medium therein to generate thermoacoustic oscillations therein; a first shutoff element in said line upstream of said vessels to permit delivery of a gaseous medium to said line for compression therein; a second shutoff element in said line between said vessels to permit a flow of compressed gaseous medium through said line in a downstream direction; a third shutoff element in said line downstream of said vessels to permit exhaust of the compressed gaseous medium from said line; a second line for conveying a gaseous medium therethrough; at least two duct-like vessels connected to said second line in series and having a chamber in communication with said second line; heat exchange means about each vessel connected to said second line for exchanging heat with a gaseous medium therein to generate thermoacoustic oscillations; a plurality of shutoff elements in said second line in alternating manner with said vessels; and at least one tube connecting at least one vessel connected to said first line to a vessel connected to said second line.
Claim 4
Independent Claim
230 words
An apparatus for conveying an compressing a gaseous medium comprising a first line for conveying a gaseous medium therethrough; at least two duct-like vessels connected to said line in series, each vessel having a chamber in communication with said line for receiving gaseous medium; at least one heat exchanger means disposed about each vessel for exchanging heat with a gaseous medium therein to generate thermoacoustic oscillations therein; a first shutoff element in said line upstream of said vessels to permit delivery of a gaseous medium to said line for compression therein; a second shutoff element in said line between said vessels to permit a flow of compressed gaseous medium through said line in a downstream direction; a third shutoff element in said line downstream of said vessels to permit exhaust of the compressed gaseous medium from said line; a second line for conveying a gaseous medium therethrough; at least two duct-like vessels connected to said second line in series and having a chamber in communication with said second line; heat exchange means about each vessel connected to said second line for exchanging heat with a gaseous medium therein to generate thermoacoustic oscillations; a plurality of shutoff elements in said second line in alternating manner with said vessels; and at least one tube connecting at least one vessel connected to said first line to a vessel connected to said second line.
Claim 5
Dependent Claim
16 words
An apparatus as set forth in claim 2 wherein each shutoff element is a check valve.
Claim 6
Dependent Claim
20 words
An apparatus as set forth in claim 3 wherein each said vessel has a longitudinal axis transverse to said lines.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |