US4416261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar collector comprising an absorber plate which exchanges heat with the evaporator section of a heat pipe
Assignee: US Philips Corp
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Filing: 1981-11-12
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Granted: 1983-11-22
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Expires: 2001-11-12
Abstract
Abstract There is provided a solar collector comprising a metal heat pipe having an evaporator section and a condenser section. A metal tube is spaced from and surrounds the evaporator section, one end of such metal tube being closed and the other end being open. A metal solar heat absorber plate is thermally conductively connected to the metal tube. An evacuated transparent glass envelope is spaced from and surrounds the metal tube and the absorber plate connected thereto, such envelope being joined to the open end of the metal tube by means of a glass-metal seal. A thermally conductive medium fills the space between the metal tube and the evaporator section of the heat pipe.
Inventors
- 👤 Herman H. M. van der Aa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/40; F24S10/45; F24S10/90; F24S10/95; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
120 words
A solar collector, which comprises a metal heat pipe having an evaporator section and a condenser section; a metal tube spaced from and surrounding the evaporator section, one end of said metal tube being closed and the other end being open; a metal solar heat absorber plate thermally conductively connected to the metal tube; an evacuated transparent glass envelope spaced from and surrounding the metal tube and the absorber plate connected thereto, said envelope being joined to the open end of the metal tube by means of a glass-metal seal; a thermally conductive liquid medium filling the space between the metal tube and the evaporator section of the heat pipe; and a seal between the heat pipe and the envelope.
Claim 2
Dependent Claim
120 words
A solar collector, which comprises a metal heat pipe having an evaporator section and a condenser section; a metal tube spaced from and surrounding the evaporator section, one end of said metal tube being closed and the other end being open; a metal solar heat absorber plate thermally conductively connected to the metal tube; an evacuated transparent glass envelope spaced from and surrounding the metal tube and the absorber plate connected thereto, said envelope being joined to the open end of the metal tube by means of a glass-metal seal; a thermally conductive liquid medium filling the space between the metal tube and the evaporator section of the heat pipe; and a seal between the heat pipe and the envelope.
Claim 3
Dependent Claim
17 words
A solar collector according to claim 1, in which the thermally conductive medium is a silicone oil.
References Cited (Backward Citations)
FR2307232A1
Cited
US4059093A
Cited
FR2385051A2
Cited
US4127105A
Cited
US4291676A
Cited
EP0012692A1
Cited
US4335709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |