US4282856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar-energy collector
Assignee: BFG Glassgroup GIE
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Filing: 1978-08-02
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Granted: 1981-08-11
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Expires: 1998-08-02
Abstract
Abstract A solar-energy collector has a frame receiving a double-pane unit consisting of a pair of transparent panes hermetically sealed together and defining the flow chamber for the heat-collecting fluid. The frame also supports a cover pane which defines, with the aforementioned unit, a heat-insulating dead-air space. The pane of the unit turned toward the sun is provided with an emission-limiting coating on its side facing the dead-air space while the pane of the unit turned away from the sun is provided with means for increasing its heat-absorption capacity. The frame members at opposite sides of the collector can be provided with fittings for connecting the collector to a source of the heat-absorbing fluid and to the output line of the collector.
Inventors
- 👤 Otto Stehl
- 👤 Hans Spakowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:14
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/50; F24S10/502; F24S10/55; F24S10/80; F24S80/00; F24S80/30; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S126/00; Y10S126/907; Y10S126/908
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
A solar-energy collector comprising: a double-pane insulating unit having a first pane with first and second surfaces transparent to solar energy and with said first surface turned toward the sun and a second pane turned away from the sun, said panes defining between them a flow chamber for a fluid adapted to pick up heat from incident sunlight; a cover pane spaced from said first pane and defining a gas-containing dead-air space therewith; inlet and outlet fittings connected to said flow chamber for admitting said fluid to and discharging said fluid from said flow chamber; an emission-limiting coating on said first surface of said first pane adjoining said dead-air space; and heat-transfer-promoting means in said flow chamber between said first and second panes.
Claim 2
Dependent Claim
123 words
A solar-energy collector comprising: a double-pane insulating unit having a first pane with first and second surfaces transparent to solar energy and with said first surface turned toward the sun and a second pane turned away from the sun, said panes defining between them a flow chamber for a fluid adapted to pick up heat from incident sunlight; a cover pane spaced from said first pane and defining a gas-containing dead-air space therewith; inlet and outlet fittings connected to said flow chamber for admitting said fluid to and discharging said fluid from said flow chamber; an emission-limiting coating on said first surface of said first pane adjoining said dead-air space; and heat-transfer-promoting means in said flow chamber between said first and second panes.
Claim 3
Dependent Claim
38 words
The solar-energy collector defined in claim 1, further comprising a frame, said unit being mounted in said frame together with said cover pane, said first pane being composed of glass, and said fittings being mounted in said frame.
Claim 4
Dependent Claim
28 words
The solar-energy collector defined in claim 2 wherein said second pane is profiled and defines flow passages in said flow chamber for said fluid with said first pane.
Claim 5
Dependent Claim
28 words
The solar-energy collector defined in claim 3 wherein said coating is selected from the group which consists of tin dioxide, indium oxide, cadmium stannate and multilayer emission-limiting coatings.
Claim 6
Dependent Claim
16 words
The solar-energy collector defined in claim 3 wherein said coating is vapor-deposited on said first pane.
Claim 7
Dependent Claim
15 words
The solar-energy collector defined in claim 3 wherein said second pane has a dark coloration.
Claim 8
Dependent Claim
19 words
The solar-energy collector defined in claim 3 wherein said second pane is provided with a coating of dark coloration.
Claim 9
Dependent Claim
20 words
The solar-energy collector defined in claim 3, further comprising a thermal-absorption-promoting inlay embedded in the material of said second pane.
Claim 10
Dependent Claim
31 words
The solar-energy collector defined in claim 3 wherein said first pane is planar and the profiles of said second pane are bonded to said first pane to define said passages therewith.
Claim 11
Dependent Claim
23 words
The solar-energy defined in claim 3 wherein said heat-transfer-promoting means comprises a grid received in each of said passages for promoting turbulence therein.
Claim 12
Dependent Claim
24 words
The solar-energy collector defined in claim 10 wherein said grid is corrugated in the direction of flow of the fluid through the respective passage.
Claim 13
Dependent Claim
47 words
The solar-energy collector defined in claim 3 wherein said fittings are provided in opposite members of said frame and said unit is formed along said opposite members with respective manifolds having openings communicating with said passages for feeding said fluid to and collecting fluid from said passages.
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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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |