US3890935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange apparatus with gas chamber below heat exchange bed
Assignee: GEC AEROSPACE Ltd
•
Filing: 1973-02-16
•
Granted: 1975-06-24
•
Expires: 1993-02-16
Abstract
Abstract Heat exchange apparatus comprising first and second chambers separated by a gas-permeable plate, and a jacket for receiving liquid to be heated positioned around the first and second chambers, said first chamber being for receiving hot gases which, during use of the apparatus, pass through the plate into a heat exchange bed of particulate material positioned in the second chamber and supported on the plate.
Inventors
- 👤 Norman Moss
- 👤 Barrie James Martin
- 👤 Michael John Broad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:01
CPC Classifications
F; F24; F24H; F24H1/00; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
Heat exchange apparatus for use in a central-heating system, which apparatus comprises first and second chambers separated by a gas-permeable plate, and a jacket for receiving water to be heated surrounding the first and second chambers, said first chamber being provided with an igniter for igniting a gaseous medium in said first chamber proximate the bottom of said jacket to form hot gases which, during use of the apparatus, pass through the plate into a heat exchange bed of particulate material positioned in the second chamber and supported on the plate to fluidize said particulate material.
Claim 2
Dependent Claim
96 words
Heat exchange apparatus for use in a central-heating system, which apparatus comprises first and second chambers separated by a gas-permeable plate, and a jacket for receiving water to be heated surrounding the first and second chambers, said first chamber being provided with an igniter for igniting a gaseous medium in said first chamber proximate the bottom of said jacket to form hot gases which, during use of the apparatus, pass through the plate into a heat exchange bed of particulate material positioned in the second chamber and supported on the plate to fluidize said particulate material.
Claim 3
Dependent Claim
34 words
Heat exchange apparatus according to claim 1 including conduits for the liquid to be heated running through the heat exchange bed and being in communication with the liquid-receiving jacket surrounding the heat exchange bed.
Claim 4
Dependent Claim
20 words
Heat exchange apparatus according to claim 1 in which a metal sponge is positioned on top of the gas-permeable plate.
Claim 5
Dependent Claim
32 words
Heat exchange apparatus according to claim 1 including banks of first and second chambers and associated heat exchange beds, said first and second chambers all being provided with a common water jacket.
Claim 6
Dependent Claim
121 words
Heat exchange apparatus for use in a central-heating system, which apparatus comprises first and second chambers separated by a gas-permeable metal sponge plate, and a jacket for receiving water to be heated which surrounds the first and second chambers and which is divided adjacent said plate so that said jacket is formed into two compartments which are in communication with each other, said first chamber being provided with an igniter for igniting a gaseous medium in said first chamber proximate the bottom of said jacket to form hot gases which, during use of the apparatus, pass through said plate into a heat-exchange bed of particulate material positioned in the second chamber and supported on said plate to fluidize said particulate material.
Claim 7
Dependent Claim
121 words
Heat exchange apparatus for use in a central-heating system, which apparatus comprises first and second chambers separated by a gas-permeable metal sponge plate, and a jacket for receiving water to be heated which surrounds the first and second chambers and which is divided adjacent said plate so that said jacket is formed into two compartments which are in communication with each other, said first chamber being provided with an igniter for igniting a gaseous medium in said first chamber proximate the bottom of said jacket to form hot gases which, during use of the apparatus, pass through said plate into a heat-exchange bed of particulate material positioned in the second chamber and supported on said plate to fluidize said particulate material.
References Cited (Backward Citations)
US1089551A
Cited
US1972324A
Cited
US2185929A
Cited
US2777760A
Cited
US2729428A
Cited
US3645237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |