Patent US3818979A successfully refreshed from Google Patents.
US3818979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange system
Assignee: Tour Agenturer AB
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Filing: 1972-11-28
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Granted: 1974-06-25
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Expires: 1992-11-28
Abstract
Abstract Two or more separate conduit units are provided, which can be embedded at remote positions in structural elements. Each conduit unit has an inlet portion, an outlet portion and a main body portion communicating with these and including at least two parallel sections of identical internal cross-sectional area arranged in heat-exchanging contact with one another over substantially their entire length. Heat exchange fluid can be circulated through the conduit units individually and can be controlled individually as to its temperature level.
Inventors
- 👤 H Hilgemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:52
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0003
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
175 words
In a heat-exchange system, in combination, conduit means, including at least a first and a separate second conduit unit which are positioned remote from one another and which each have an inlet portion, an outlet portion and a main body portion intermediate said inlet and outlet portions and adapted to be embedded in a structural element, each of said main body portions including at least two parallel conduit sections of at least substantially identical internal cross-sectional area which are arranged in heat-exchanging contact with one another over at least substantially their entire length, one of said conduit sections communicating with and receiving incoming fresh heatexchange fluid from said inlet portion and the other conduit section communicating with and receiving spent heat-exchange fluid from said one conduit section for conducting it to said outlet portion; circulating means connected with the respective inlet and outlet portions for circulating heat-exchange fluid through each conduit unit independently of the other; and heatexchange means for individually adjusting the temperature of said heat-exchange fluid being circulated through the respective conduit units.
Claim 2
Dependent Claim
175 words
In a heat-exchange system, in combination, conduit means, including at least a first and a separate second conduit unit which are positioned remote from one another and which each have an inlet portion, an outlet portion and a main body portion intermediate said inlet and outlet portions and adapted to be embedded in a structural element, each of said main body portions including at least two parallel conduit sections of at least substantially identical internal cross-sectional area which are arranged in heat-exchanging contact with one another over at least substantially their entire length, one of said conduit sections communicating with and receiving incoming fresh heatexchange fluid from said inlet portion and the other conduit section communicating with and receiving spent heat-exchange fluid from said one conduit section for conducting it to said outlet portion; circulating means connected with the respective inlet and outlet portions for circulating heat-exchange fluid through each conduit unit independently of the other; and heatexchange means for individually adjusting the temperature of said heat-exchange fluid being circulated through the respective conduit units.
Claim 3
Dependent Claim
38 words
In a system as defined in claim 1, said heat-exchange means comprising booster means for supplying heat exchange fluid at optimum temperature to that one of said units which is subject to maximum heat exchange with its surroundings.
Claim 4
Dependent Claim
27 words
In a system as defined in claim 2, wherein said booster means comprises an auxiliary heater for heat exchange fluid to be circulated through said one unit.
Claim 5
Dependent Claim
28 words
In a system as defined in claim 2, wherein said booster means comprises an auxiliary cooling device for heat exchange fluid to be circulated through said one unit.
Claim 6
Dependent Claim
42 words
In a system as defined in claim 1, wherein said main body portions are arranged in form of adjacent loops, and wherein the spacing between adjacent loops of one unit is different from the spacing between adjacent loops of the other unit.
Claim 7
Dependent Claim
45 words
In a system as defined in claim 5, wherein one of said units is subject to more intensive heat exchange with its surroundings than the other unit; and wherein the spacing between adjacent loops of said one unit is smaller than in said other unit.
Claim 8
Dependent Claim
16 words
In a system as defined in claim 5, wherein said spacing is at most 12 cm.
Claim 9
Dependent Claim
17 words
In a system as defined in claim 1, wherein said conduit units are of synthetic plastic material.
Claim 10
Dependent Claim
50 words
In a system as defined in claim 1; further comprising two thermostats associated with one of said units and with said heat exchange means, one of said thermostats being located at said outlet portion of said one unit and the other thermostat being located exteriorly proximal to said one unit.
Claim 11
Dependent Claim
37 words
In a system as defined in claim 1; further comprising a thermostat and a hygrostat associated with one of said units and with said heat exchange means, said hygrostat being located exteriorly proximal to said one unit.
Claim 12
Dependent Claim
16 words
In a system as defined in claim 9, wherein said thermostats are adjustable to selected temperatures.
Claim 13
Dependent Claim
28 words
In a system as defined in claim 10, wherein said thermostat is adjustable to a selected temperature, and said hygrostat is adjustable to a selectable degree of humidity.
References Cited (Backward Citations)
US3143637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |