US3720198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat storage elements, a method for producing them and devices comprising heat storage elements
Assignee: Individual
•
Filing: 1969-06-04
•
Granted: 1973-03-13
•
Expires: 1989-06-04
Abstract
Abstract A heat-storing element comprising a storage substance which can absorb latent heat, seed crystals distributed uniformly in said storage substance and a structure which prevents any change of the distribution during the melting phase of the substance.
Inventors
- 👤 N Laing
- 👤 I Laing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/34; C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; F24S; F24S50/00; F24S50/80; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
106 words
A storage element comprising a storage substance which can absorb heat on transition from the solid state to the liquid state having seed crystals in said substance to prevent the storage substance from cooling below its melting temperature during a phase in which it yields up heat, characterized in that a porous shape retaining body having therein a plurality of small capillary passages is included in said element to hold said crystals uniformally throughout said substance and to hold said substance by capillary tension within said element and a vapor barrier encasing said body to prevent escape of vapor of said storage substance from said element.
Claim 2
Dependent Claim
106 words
A storage element comprising a storage substance which can absorb heat on transition from the solid state to the liquid state having seed crystals in said substance to prevent the storage substance from cooling below its melting temperature during a phase in which it yields up heat, characterized in that a porous shape retaining body having therein a plurality of small capillary passages is included in said element to hold said crystals uniformally throughout said substance and to hold said substance by capillary tension within said element and a vapor barrier encasing said body to prevent escape of vapor of said storage substance from said element.
Claim 3
Dependent Claim
18 words
A storage element according to claim 1 characterized in that the storage substance comprises substantial eutectic multi-phase mixtures.
Claim 4
Dependent Claim
22 words
A storage element according to claim 1 characterized in that the shape retaining body comprises an inorganic substance having fibrous crystal structures.
Claim 5
Dependent Claim
31 words
A storage element according to claim 1 characterized in that the storage material is uniformally distributed in said shape retaining body and has in addition a secondary support means integrated therein.
Claim 6
Dependent Claim
17 words
A storage element according to claim 1 having in addition a plastic tube encasing said storage element.
Claim 7
Dependent Claim
18 words
A storage element according to claim 1 characterized in that said vapor barrier comprises an air-tight flexible covering.
Claim 8
Dependent Claim
25 words
A storage element according to claim 1 characterized in that the storage substance uniformly distributed in said body is incorporated in a further secondary body.
Claim 9
Dependent Claim
39 words
A storage element according to claim 1 characterized in that the porous body is made of ground glass fibers having fine gaps therebetween which have a high surface tension in relation to the storage substance in the liquid state.
Claim 10
Dependent Claim
58 words
A storage element according to claim 1, characterized in that the body comprises a porous material which, in the liquid phase of the storage substance in the range of operating temperatures, is insoluble or substantially insoluble, does not react chemically with the storage substance and, at the melting temperature of the storage substances is in the solid state.
Claim 11
Dependent Claim
28 words
A storage element according to claim 9, characterized in that said body is at least slightly soluble in the storage substance melt at a temperature above operating temperature.
Claim 12
Dependent Claim
28 words
A storage element according to claim 9 characterized in that said body comprises a synthetically formed zeolite-like structures and the storage substance is incorporated in said zeolite-like structures.
Claim 13
Dependent Claim
26 words
A storage element according to claim 1, characterized in that the storage substance comprises a metallic salt hydrate which melts in its own water of crystallization.
Claim 14
Dependent Claim
18 words
A storage element according to claim 12, characterized in that the storage substance comprises a double salt hydrate.
Claim 15
Dependent Claim
27 words
A storage element according to claim 1, characterized in that the body constitutes only a few per cent, preferably less than 3 percent, of the storage substance.
Claim 16
Dependent Claim
18 words
A storage element according to claim 1, characterized in that the secondary body comprises a sheet metal mat.
References Cited (Backward Citations)
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US2898091A
Cited
US2915397A
Cited
US3103934A
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US3536058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |