US4245500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensor for determining heat flux through a solid medium
Assignee: Karlsruher Institut für Technologie
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Filing: 1978-12-29
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Granted: 1981-01-20
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Expires: 1998-12-29
Abstract
Abstract A measuring sensor for use in determination of the heat flux through a solid medium according to the method in which two thermoelements are arranged at a defined distance and a temperature gradient of the medium is measured from which the heat flux is determined, composed of a body shaped to be fitted into an opening provided in the medium to be axially penetrated by the heat flux through the medium while the lateral surface of the body is thermally insulated from the medium, and constructed such that the integrated coefficient of thermal conductivity of the body is substantially equal to the coefficient of thermal conductivity of a volume of the medium having dimensions corresponding to those of the opening, the body including components of two different thermoelectric materials defining at least two spaced thermoelectrically effective contact points, and signal leads associated with the contact points and spaced apart in the direction of the heat flux; and wherein the exterior lateral surface of said body is insulated from the medium.
Inventors
- 👤 Siegfried Malang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:50
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/18; G01K; G01K17/00; G01N25/20; G01N25/48; G01N25/4806; G01N25/4813; G01N25/482
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
A measuring sensor for use in determination of the heat flux through a solid medium according to the method in which two thermoelements are arranged at a defined distance and a temperature gradient of the medium is measured from which the heat flux is determined, said sensor comprising: a body shaped to be fitted into an opening provided in the medium to be penetrated by the heat flux through the medium and composed of materials so selected that the integrated coefficient of thermal conductivity of said body is substantially equal to the coefficient of thermal conductivity of a volume of said medium having dimensions corresponding to those of said opening, said body including components of two different thermoelectric materials identical to said selected materials of said body and defining at least two spaced thermoelectrically effective contact points; and signal leads associated with said contact points and spaced apart in the direction of the heat flux; and wherein the exterior lateral surface of said body is insulated from the medium.
Claim 2
Dependent Claim
169 words
A measuring sensor for use in determination of the heat flux through a solid medium according to the method in which two thermoelements are arranged at a defined distance and a temperature gradient of the medium is measured from which the heat flux is determined, said sensor comprising: a body shaped to be fitted into an opening provided in the medium to be penetrated by the heat flux through the medium and composed of materials so selected that the integrated coefficient of thermal conductivity of said body is substantially equal to the coefficient of thermal conductivity of a volume of said medium having dimensions corresponding to those of said opening, said body including components of two different thermoelectric materials identical to said selected materials of said body and defining at least two spaced thermoelectrically effective contact points; and signal leads associated with said contact points and spaced apart in the direction of the heat flux; and wherein the exterior lateral surface of said body is insulated from the medium.
Claim 3
Dependent Claim
35 words
An arrangement as defined in claim 1 wherein said body comprises a layer made of one of said thermoelectric materials which influences the temperature drop in said sensor body disposed between said thermoelectric contact points.
Claim 4
Dependent Claim
19 words
An arrangement as defined in claim 2 wherein said layer forms one component of each of said contact points.
Claim 5
Dependent Claim
40 words
An arrangement as defined in claim 3 wherein said body further comprises layers of the other one of said thermoelectric materials each plated onto a respective end of said first recited layer by explosion welding, friction welding or the like.
Claim 6
Dependent Claim
60 words
Measuring sensor as defined in claims 1, 2, 3 or 4 wherein said body has a circularly cylindrical shape; is composed of a plurality of superposed layers of respective ones of said thermoelectric materials; and is provided at its interior with a longitudinally extending cylindrical bore in which said leads are connected to the two outer layers of said body.
Claim 7
Dependent Claim
36 words
An arrangement as defined in claim 5 wherein said leads comprise a multiconductor, sheathed thermoelement which extends into said bore and is composed of a plurality of conductors made of the same materials as said layers.
Claim 8
Dependent Claim
36 words
An arrangement as defined in claim 6 wherein two of said conductors of said thermoelement are made of the same materials as the two outermost layers of said body and are connected to said two layers.
Claim 9
Dependent Claim
42 words
An arrangement as defined in claim 7 wherein said thermoelement includes a third conductor made of a thermoelectric material different from that of said two layers and thermoelectrically connected to one of said two outermost layers while forming a further thermoelectric point.
Claim 10
Dependent Claim
38 words
An arrangement as defined in claim 8 wherein said body is composed of three layers of thermoelectric material and said third conductor is of the same material as the central one of said three layers of said body.
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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |