US4625790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transport apparatus
Assignee: Individual
•
Filing: 1985-07-22
•
Granted: 1986-12-02
•
Expires: 2005-07-22
Abstract
Abstract A heat transport apparatus comprises a closed circuit including a heating block and a radiator, the heating block being provided with a recess for producing a small bubble. The bubble is grown by heating the heating block, whereby working fluid is displaced and made to circulate through the radiator.
Inventors
- 👤 Kenji Okayasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:08
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/0266; F24; F24D; F24D3/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
197 words
A heat transport apparatus comprising a heating block made of material having a high heat conductivity and having a recess means formed therein to produce a small bubble, pipe means made of material having a low heat conductivity and adapted to contain a working fluid, the heating block being positioned with its recess in fluid communication with the interior of the pipe means and arranged to be heated for growing a bubble in said working fluid, flapper-type check valves provided at the ends of the pipe means and arranged so that the growing bubble increases the pressure of the working fluid in the pipe means, the increased pressure causing one check valve to open and the other check valve to close, thereby displacing the working fluid through the opened check valve under the action of the grown bubble, further pipe means connected between an inlet of one of the check valves and an outlet of the other check valve for circulating the working fluid to pass it through the other check valve into the heating block when the bubble is constricted, and a radiator positioned in the further pipe means for radiating heat from the working fluid.
Claim 2
Dependent Claim
197 words
A heat transport apparatus comprising a heating block made of material having a high heat conductivity and having a recess means formed therein to produce a small bubble, pipe means made of material having a low heat conductivity and adapted to contain a working fluid, the heating block being positioned with its recess in fluid communication with the interior of the pipe means and arranged to be heated for growing a bubble in said working fluid, flapper-type check valves provided at the ends of the pipe means and arranged so that the growing bubble increases the pressure of the working fluid in the pipe means, the increased pressure causing one check valve to open and the other check valve to close, thereby displacing the working fluid through the opened check valve under the action of the grown bubble, further pipe means connected between an inlet of one of the check valves and an outlet of the other check valve for circulating the working fluid to pass it through the other check valve into the heating block when the bubble is constricted, and a radiator positioned in the further pipe means for radiating heat from the working fluid.
Claim 3
Dependent Claim
19 words
An heat transport apparatus as claimed in claim 1 wherein an accumulator is positioned in the further pipe means.
References Cited (Backward Citations)
US3392781A
Cited
US3929305A
Cited
GB1558551A
Cited
US4120172A
Cited
US4212593A
Cited
GB2081435A
Cited
US4383643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |