US3877441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating fluids
Assignee: STAV PRAHA VYROBNI STAVEBNI DRUZSTNO STREDISKO MONTA
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Filing: 1973-08-13
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Granted: 1975-04-15
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Expires: 1993-08-13
Abstract
Abstract An apparatus for heating or evaporating liquids or gases in which a homogeneous gaseous mixture of fuel and oxidizing agent is passed through a gas-permeable bed of a radiation substance, in which it undergoes flameless combustion with an extremely high intensity, so that the entire heat is converted into radiation emitted by the radiation substance. The radiation substance transmits heat in this form to a system of hollow jackets, which are preferably of cylindrical or prismatic formation, co-axially placed one inside the other so as to produce continuous annular spaces between neighbouring jackets, said spaces being filled with the radiation substance. The apparatus thereby disperses with surfaces for heat exchange by convection.
Inventors
- 👤 Jan Mach
- 👤 Vaclav Rybar
- 👤 Radovan Drapal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:52
CPC Classifications
F; F23; F23C; F23C99/00; F23C99/006; F22; F22B; F22B21/00; F22B21/34; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/16; F24H1/165; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
196 words
Apparatus for heating fluids and adapted for flameless combustion of a combustible gaseous mixture of a fuel and an oxidizing agent, said apparatus comprising a plurality of connected hollow jackets of similar construction through which the fluid to be heated flows, said jackets being of different diameters and being disposed coaxially one inside the other so as to form regular and continuous annular spaces of constant width between the opposite surfaces of successive jackets, a gaspermeable radiation substance filling the spaces between successive jackets and the space within the innermost jacket, said radiation substance being adapted to be brought into a thermal condition in which it radiates substantially the entire thermal energy liberated at its surface, said substance being in intimate contact with the surfaces of said jackets by which it is surrounded and enclosed, a casing at the bottom of said jackets, the casing being common to all of the jackets at the bottoms thereof, means in said casing for homogenizing the combustible gaseous mixture, and distribution means in said casing for distributing the homogenized combustible gaseous mixture to the radiation substance filling the spaces between successive jackets and the space within the innermost jacket.
Claim 2
Dependent Claim
196 words
Apparatus for heating fluids and adapted for flameless combustion of a combustible gaseous mixture of a fuel and an oxidizing agent, said apparatus comprising a plurality of connected hollow jackets of similar construction through which the fluid to be heated flows, said jackets being of different diameters and being disposed coaxially one inside the other so as to form regular and continuous annular spaces of constant width between the opposite surfaces of successive jackets, a gaspermeable radiation substance filling the spaces between successive jackets and the space within the innermost jacket, said radiation substance being adapted to be brought into a thermal condition in which it radiates substantially the entire thermal energy liberated at its surface, said substance being in intimate contact with the surfaces of said jackets by which it is surrounded and enclosed, a casing at the bottom of said jackets, the casing being common to all of the jackets at the bottoms thereof, means in said casing for homogenizing the combustible gaseous mixture, and distribution means in said casing for distributing the homogenized combustible gaseous mixture to the radiation substance filling the spaces between successive jackets and the space within the innermost jacket.
Claim 3
Dependent Claim
35 words
Apparatus as in claim 1, wherein the surfaces of said jackets contacting the radiation substance are shaped as hollow ribs arranged in transverse planes perpendicular to the flow direction of flow of the combustion gases.
Claim 4
Dependent Claim
15 words
Apparatus as in claim 1, wherein the jackets comprise wound metal with closely adjacent coils.
Claim 5
Dependent Claim
19 words
Apparatus as in claim 3, wherein the wound metal tubes of a plurality of jackets are connected in series.
Claim 6
Dependent Claim
19 words
Apparatus as in claim 4, wherein the wound metal tubes of a plurality of jackets are connected in parallel.
Claim 7
Dependent Claim
20 words
Apparatus as in claim 4, wherein the wound metal tubes of a plurality of jackets are arranged in seriesparallel connection.
Claim 8
Dependent Claim
27 words
Apparatus as in claim 1, wherein the width of the annular spaces between opposite surfaces of successive jackets enclosing the radiation substance is uniform throughout the apparatus.
Claim 9
Dependent Claim
13 words
Apparatus as in claim 1, wherein the hollow jackets are of cylindrical cross-section.
Claim 10
Dependent Claim
13 words
Apparatus as in claim 1, wherein the hollow jackets are of prismatic cross-section.
Claim 11
Dependent Claim
27 words
Apparatus as in claim 1, wherein the smallest distance between opposite surfaces of the innermost jacket equals the width of the annular spaces between the other jackets.
References Cited (Backward Citations)
US737279A
Cited
US1777708A
Cited
US2102152A
Cited
US2082338A
Cited
US3563211A
Cited
US3563212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |