US4449576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-producing elements with heat pipes
Assignee: KABEL- und METALLWERKE GUTEHOFFNUNGSHUTTE AG A GERMAN CORP
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Filing: 1981-11-27
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Granted: 1984-05-22
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Expires: 2001-11-27
Abstract
Abstract The PC-boards are contained in sealed enclosures, and serially effective heat pipe systems conduct thermal energy from the respective sources of development (e.g., power transmitters) to the top and from there to a heat pump system. Stacking such units and operating the heat transfer partially in parallel is disclosed.
Inventors
- 👤 Walter Baum
- 👤 Michael Still
- 👤 Erich Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:21
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/20627; H05K7/20645; H05K7/20663; H05K7/20672
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
88 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed, and having a top, there being ducts in the top filled with an evaporating working fluid; first means including a working fluid containing tubular or hollow means disposed for conducting thermal energy from the interior of the enclosure to said top; and second means coupled to the top outside said enclosure for removing said conductive thermal energy.
Claim 2
Dependent Claim
88 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed, and having a top, there being ducts in the top filled with an evaporating working fluid; first means including a working fluid containing tubular or hollow means disposed for conducting thermal energy from the interior of the enclosure to said top; and second means coupled to the top outside said enclosure for removing said conductive thermal energy.
Claim 3
Dependent Claim
91 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed, and having a top, there being ducts in the top filled with an evaporating working fluid; a tubular, evaporating working fluid containing heat conductor thermally coupled with one end to said power element and for said top with its other end and conducting heat to the top of said enclosure and means disposed for removing said heat from said top.
Claim 4
Dependent Claim
91 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed, and having a top, there being ducts in the top filled with an evaporating working fluid; a tubular, evaporating working fluid containing heat conductor thermally coupled with one end to said power element and for said top with its other end and conducting heat to the top of said enclosure and means disposed for removing said heat from said top.
Claim 5
Dependent Claim
130 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed, and having a top, there being ducts in the top filled with an evaporating working fluid, first means, including tubular means in the enclosure in heat-conductive relation with the element and with said top and including an evaporating fluid; second means in heat-conductive relation with said fluid in said top when evaporated and being at or part of a wall of the enclosure, the fluid recondensation in the ducts or the top when in contact with the second means, thereby heating the second means; and means on the outside of the enclosure for removing heat from the second means.
Claim 6
Dependent Claim
130 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed, and having a top, there being ducts in the top filled with an evaporating working fluid, first means, including tubular means in the enclosure in heat-conductive relation with the element and with said top and including an evaporating fluid; second means in heat-conductive relation with said fluid in said top when evaporated and being at or part of a wall of the enclosure, the fluid recondensation in the ducts or the top when in contact with the second means, thereby heating the second means; and means on the outside of the enclosure for removing heat from the second means.
Claim 7
Dependent Claim
82 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed; the enclosure having a top, therein being ducts in the top filled with an evaporating working fluid; at least one tubular means in heat-conductive relation with the element and with said top and also containing an evaporating working fluid; and means for removing heat from recondensed working fluid in said ducts.
Claim 8
Dependent Claim
82 words
An enclosure for receiving PC-boards, of which one or more carry at least one electric or electronic power element that develops significant amounts of heat, comprising: the enclosure being air-tightly sealed; the enclosure having a top, therein being ducts in the top filled with an evaporating working fluid; at least one tubular means in heat-conductive relation with the element and with said top and also containing an evaporating working fluid; and means for removing heat from recondensed working fluid in said ducts.
Claim 9
Dependent Claim
10 words
An enclosure as in claim 4, the top being inclined.
Claim 10
Dependent Claim
28 words
An enclosure as in claim 4 or 5, the means for removing including a heat sink element and another tube filled with working fluid, all outside said enclosure.
Claim 11
Dependent Claim
22 words
An enclosure as in claim 4, the means for removing including a bored section, and heat tubing means connected to said section.
Claim 12
Dependent Claim
20 words
An enclosure as in claim 7, the section having at least one bore communicating with the ducts in the top.
Claim 13
Dependent Claim
19 words
An enclosure as in claim 1, 2, 3 or 4, the means for removing including a heat pump system.
Claim 14
Dependent Claim
20 words
A plurality of units as in claim 1, 2, 3 or 4 and including a common means for heat removal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |