US4382807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating foreign matter from a gas with a heat exchanger
Assignee: Helical Dynamics Inc
•
Filing: 1981-08-10
•
Granted: 1983-05-10
•
Expires: 2001-08-10
Abstract
Abstract A gas cleaning and heat transfer apparatus has a plurality of gas cleaning units that concurrently operate to separate foreign matter from the gas and reduces the temperature of the gas. Each cleaning unit has a heat conducting wall surrounding a tubular passage for carrying gas and foreign matter. A plurality of helical elements located in the passage are positioned in angular relationship relative to each other so that the gas moving through the passage is divided into separate helical gas streams. Heat from the gas in the passage is transferred through the wall to the fluid. The jacket around the cylindrical wall has a generally spiral rib in one embodiment which directs the flow of liquid in the chamber in a spiral path. The heating liquid is pumped to a location where the heat in the liquid is utilized. In another embodiment a spiral fin surrounds the heat conducting wall and a relatively airtight jacket surrounds the fin. Air cools the heat conducting wall as it circulates in the jacket. The foreign matter is separated from the gas as it moves in the spiral path through the passage by the combined mechanisms of centrifugal force, adhesion, condensation, and impaction. The cool cylindrical wall causes condensation of vapors carried by the gas on the wall to facilitate the collection of foreign matter. The collected foreign matter flowing along the wall is carried by the moving gas to an annular collecting member.
Inventors
- 👤 Wolodymyr Diachuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:01
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2035; B; B01; B01D; B01D45/00; B01D45/12; B01D45/16; B01D50/00; Y; Y10; Y10S; Y10S55/00; Y10S55/36
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
328 words
An apparatus for separating foreign matter from a hot gas and transferring heat from the gas to a fluid comprising: first means having a continuous uninterrupted fluid impervious heat conducting tubular wall surrounding a tubular passage, said wall having a gas inlet end and a gas outlet end aligned with the passage; second means located in the passage along the longitudinal length of the passage to direct gas and foreign matter flowing through said passage in a generally helical path extended from the gas inlet end to the gas outlet end thereof, said foreign matter entrained in the gas being collected on the inside surface of said wall, said collected foreign matter moving along said inside surface of said wall toward the gas outlet end; annular means fixed with respect to said tubular wall to collect foreign matter that moves from the outlet end and permit clean gas to pass centrally thereof; cylindrical jacket means surrounding the tubular wall providing a chamber for accommodating a fluid located in engagement with said tubular wall whereby heat from said tubular wall is transferred to said fluid, said jacket means having opposite ends secured to the first means adjacent the gas inlet and the tubular wall adjacent the gas outlet, spiral fin means surrounding and secured to the heat conducting tubular wall, said spiral fin means extended the length of said chamber and spaced from the jacket means providing said chamber with a spiral passage for carrying fluid and directing the flow of fluid around and along the length of the tubular wall whereby the tubular wall is cooled and the temperature of the gas in the passage adjacent the inside surface of the tubular wall is lowered to enhance condensation of gases into liquids which collect on said inside surface of the tubular wall, means for supplying fluid to one end of said chamber, and means for carrying fluid from the other end of said chamber to a desired location.
Claim 2
Independent Claim
328 words
An apparatus for separating foreign matter from a hot gas and transferring heat from the gas to a fluid comprising: first means having a continuous uninterrupted fluid impervious heat conducting tubular wall surrounding a tubular passage, said wall having a gas inlet end and a gas outlet end aligned with the passage; second means located in the passage along the longitudinal length of the passage to direct gas and foreign matter flowing through said passage in a generally helical path extended from the gas inlet end to the gas outlet end thereof, said foreign matter entrained in the gas being collected on the inside surface of said wall, said collected foreign matter moving along said inside surface of said wall toward the gas outlet end; annular means fixed with respect to said tubular wall to collect foreign matter that moves from the outlet end and permit clean gas to pass centrally thereof; cylindrical jacket means surrounding the tubular wall providing a chamber for accommodating a fluid located in engagement with said tubular wall whereby heat from said tubular wall is transferred to said fluid, said jacket means having opposite ends secured to the first means adjacent the gas inlet and the tubular wall adjacent the gas outlet, spiral fin means surrounding and secured to the heat conducting tubular wall, said spiral fin means extended the length of said chamber and spaced from the jacket means providing said chamber with a spiral passage for carrying fluid and directing the flow of fluid around and along the length of the tubular wall whereby the tubular wall is cooled and the temperature of the gas in the passage adjacent the inside surface of the tubular wall is lowered to enhance condensation of gases into liquids which collect on said inside surface of the tubular wall, means for supplying fluid to one end of said chamber, and means for carrying fluid from the other end of said chamber to a desired location.
Claim 3
Dependent Claim
94 words
The apparatus of claim 1 including: a housing having a chamber, said housing having a top wall with a gas inlet opening; said first means being located in the chamber and mounted on said top wall, said tubular passage being longitudinally aligned with said gas inlet opening, said housing having a gas outlet opening, and means for drawing gas from said chamber through said gas outlet opening whereby gas flows through said tubular passage of the first means into said chamber, and means securing the first means and jacket means to said top wall.
Claim 4
Dependent Claim
45 words
The apparatus of claim 1 wherein: said second means comprises a plurality of helical elements, each helical element having a diameter substantially the same as the diameter of said tubular passage, said helical elements being located in end-to-end relation and having the same twist direction.
Claim 5
Dependent Claim
80 words
The apparatus of claim 3 wherein: each helical element has about 180 degree twist, each helical element terminating in an edge located circumferentially about 90 degrees relative to the leading edge of the adjacent helical element whereby when gas and foreign matter flows through said tubular passage, the gas and foreign matter is divided into separate streams at each leading edge of a helical element and follows a generally helical path during the flow thereof toward the gas outlet end.
Claim 6
Dependent Claim
69 words
The apparatus of claim 1 wherein: said jacket includes a sleeve surrounding the tubular wall, said sleeve being spaced outwardly from said tubular wall forming therewith said chamber, said sleeve having a fluid inlet at a first portion thereof and a fluid outlet at a second portion thereof whereby fluid introduced into said chamber circulates about said tubular wall in a spiral pattern induced by said spiral fin means.
Claim 7
Dependent Claim
29 words
The apparatus of claim 5 wherein: said spiral fin means is a continuous spiral fin having an outer peripheral edge spaced slightly from the inner surface of said sleeve.
Claim 8
Independent Claim
254 words
An apparatus for separating foreign material from a hot gas and transferring heat from the hot gas to a fluid comprising: first means having a wall, said wall having opposite ends and a passage, and a gas inlet and a gas outlet surrounded by the opposite ends open to said passage, second means located in the passage to direct gas and foreign matter in a generally helical path into engagement with said wall, said foreign matter being collected on said wall, said collected foreign matter movable along said wall toward the gas outlet, third means fixed with respect to said wall to collect foreign matter that moves from said outlet of the passage and to permit clean gas to pass through said third means, fourth means including a jacket surrounding said wall providing a chamber accommodating a fluid located in engagement with said wall whereby heat from said hot gas in the passage is transferred through said wall to said fluid, spiral means located in said chamber and mounted on said wall for heat transfer from the wall to the fluid and to direct a spiral path of the fluid along the wall, whereby the wall is cooled and the temperature of the gas in the passage adjacent the inside surface of the wall is lowered to enhance condensation of gases into liquids which collect on said inside surface of the wall, and means for supplying fluid to one end of said chamber and carrying heated fluid from the other end of said chamber.
Claim 9
Independent Claim
254 words
An apparatus for separating foreign material from a hot gas and transferring heat from the hot gas to a fluid comprising: first means having a wall, said wall having opposite ends and a passage, and a gas inlet and a gas outlet surrounded by the opposite ends open to said passage, second means located in the passage to direct gas and foreign matter in a generally helical path into engagement with said wall, said foreign matter being collected on said wall, said collected foreign matter movable along said wall toward the gas outlet, third means fixed with respect to said wall to collect foreign matter that moves from said outlet of the passage and to permit clean gas to pass through said third means, fourth means including a jacket surrounding said wall providing a chamber accommodating a fluid located in engagement with said wall whereby heat from said hot gas in the passage is transferred through said wall to said fluid, spiral means located in said chamber and mounted on said wall for heat transfer from the wall to the fluid and to direct a spiral path of the fluid along the wall, whereby the wall is cooled and the temperature of the gas in the passage adjacent the inside surface of the wall is lowered to enhance condensation of gases into liquids which collect on said inside surface of the wall, and means for supplying fluid to one end of said chamber and carrying heated fluid from the other end of said chamber.
Claim 10
Dependent Claim
57 words
The apparatus of claim 7 wherein: said jacket includes a side wall surrounding said wall of the first means, said side wall being spaced outwardly from said wall of the first means forming therewith said chamber, said spiral means providing a spiral passage around the wall of the first means for carrying said fluid in said chamber.
Claim 11
Dependent Claim
16 words
The apparatus of claim 8 wherein: said side wall is slightly spaced from the spiral means.
Claim 12
Dependent Claim
21 words
The apparatus of claim 8 wherein: said spiral means includes a continuous spiral fin located about and secured to said tube.
Claim 13
Dependent Claim
71 words
The apparatus of claim 7 wherein: said first means is a tube having said passage, said tube having a circular open outlet end opened to said passage, said fourth means having end portions secured in relatively airtight relationship to said tube and a side wall surrounding and spaced from said tube and said spiral means, said end portions of side walls forming with said tube said chamber for accommodating a fluid.
Claim 14
Dependent Claim
45 words
The apparatus of claim 11 wherein: said second means comprises a plurality of helical elements, each helical element having a diameter substantially the same as the diameter of the tubular passage, said helical elements being located in end-to-end relationship and having the same twist direction.
Claim 15
Dependent Claim
26 words
The apparatus of claim 11 wherein: said spiral means comprises a continuous spiral fin disposed in circumferential relationship to said tube and secured to said tube.
References Cited (Backward Citations)
US1813343A
Cited
US2049708A
Cited
US2268386A
Cited
US2341319A
Cited
GB1435490A
Cited
US4038056A
Cited
US4305909A
Cited
US4278126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |