US4146087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for accumulation tanks for fluid
Assignee: AUTOMATIK VARME VENTILATIONSSERVICE AVV AB
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Filing: 1977-11-08
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Granted: 1979-03-27
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Expires: 1997-11-08
Abstract
Abstract Method and device for maintaining and reinforcing in an accumulation tank a stratified condition of fluid caused by the fluid in the tank when a flowing of the fluid is caused by heating the same. The portion of the fluid in the tank that is to be heated is separated from the fluid in the tank prior to the heating and the heated fluid is permitted to ascend through a liquid column separated from the fluid in the tank and is conducted back into the tank at the fluid-layer that has substantially the same temperature as the heated fluid. The device comprises an accumulation tank in which a tube is arranged substantially vertically from the bottom thereof towards its upper part and the tube receives separated heated fluid which is allowed to ascend through the tube. The tube is provided with openings one after the other along the tube constituting outlets for the heated fluid.
Inventors
- 👤 Axel H. Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:50
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/0034; F28D20/0039; F28D2020/0065; F28D2020/0069; F28D2020/0078; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E60/00; Y02E60/14; Y10; Y10S; Y10S165/00; Y10S165/342; Y10S165/348; Y10S165/351; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954; Y10T137/85962; Y10T137/86348; Y10T137/86372
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
A method for maintaining and reinforcing, in an accumulation tank, a stratified condition of fluid caused by the fluid in the tank, when a flowing of the fluid is caused by heating the same, characterized in that the portion of the fluid in the tank that is to be heated is separated from the fluid in the tank prior to said heating, and that the heated fluid is permitted to ascend through a liquid column separated from the fluid in the tank, and that the fluid is conducted back into the tank at the fluid-layer that has substantially the same temperature as the heated fluid.
Claim 2
Independent Claim
105 words
A method for maintaining and reinforcing, in an accumulation tank, a stratified condition of fluid caused by the fluid in the tank, when a flowing of the fluid is caused by heating the same, characterized in that the portion of the fluid in the tank that is to be heated is separated from the fluid in the tank prior to said heating, and that the heated fluid is permitted to ascend through a liquid column separated from the fluid in the tank, and that the fluid is conducted back into the tank at the fluid-layer that has substantially the same temperature as the heated fluid.
Claim 3
Dependent Claim
79 words
Device for performing the method of claim 1, comprising an accumulation tank (1) containing fluid, characterized by a tube (4, 12, 36) arranged substantially vertically, and extending substantially vertically in the tank from the bottom of said tank towards its upper part and the lower end of which receives separated, heated fluid which is allowed to ascend through the tube, whereby the tube (4, 12, 36) is provided with openings (6,17,37) positioned one after the other along the tube.
Claim 4
Dependent Claim
54 words
Device according to claim 2, characterized in that the tube (4, 12,36) extends from a chamber (11,38) at the bottom of the tank, and that this chamber (11,38) is in communication with the fluid in the tank, and that this chamber (11,38) contains separated, heated fluid that is to ascend through the tube (4,12,36).
Claim 5
Dependent Claim
28 words
Device according to claim 3, characterized in that said chamber (11,38) is provided with heat exchangers (16) for heating of the fluid that is separated in the chamber.
Claim 6
Dependent Claim
16 words
Device according to claim 3, characterized in that the tube (4,12,36) has a low thermal conductivity.
Claim 7
Dependent Claim
20 words
Device according to claim 5, characterized in that the openings in the tube (4,12,36) are constituted of tubular nozzles (20).
References Cited (Backward Citations)
US2233505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |