EP0221623A2
Expired / Lapsed
EP
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Heat exchanger
Assignee: Individual
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Filing: 1986-02-18
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Granted: —
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Expires: 2006-02-18
Abstract
Abstract A heat exchanger, especially suited for providing the radiator in vehicle cooling systems, comprises structure defining a path forthe streamline flow of a relatively large volume of air or other first fluid, a substantial part of the structure defining the path being formed by at least one thin panel extending parallel to the streamline path of the first ftuid, the panel incorporating flow passages for a relatively smaller volume of a second fluid. Typically, one or more panels are mounted substantially in parallel with a vehicle surface over which streamline flow occurs, or within a fairing through which a streamline flow of air passes from an inlet to an outlet. The surfaces of the panels are preferably configured to produce micro turbulence within a boundary layer of the first fluid, without disturbing the overall streamline flow of the latter.
Inventors
- 👤 Anthony Joseph Cesaroni
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:49
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/10; B; B60; B60K; B60K11/00; B60K11/02; B60K11/04; B60K11/08; F28; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0308; F28D1/0325; F28D1/0333; F28F; F28F3/00; F28F3/12; F28F3/14; B60Y; B60Y2200/00; B60Y2200/10; B60Y2200/11; B60Y2200/114; F28D21/00; F28D2021/0019; F28D2021/008; F28D2021/0091; F28D2021/0094
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
94 words
1 . A heat exchanger comprising at least one thin laminar element of substantial surface area located with at least one extended surface boundary in contact with a streamline flow of a first fluid, the laminar element defining internal passages for the flow of a second fluid, characterized in that at least a substantial portion of the boundary surface of the laminar element (14, 16, 18, 20, 84, 92) is configured with minor surface discontinuities (30,36, 82, 86) sufficient to provide surface micro turbulence in the first fluid whilst maintaining overall streamline flow thereof.
Claim 2
Dependent Claim
94 words
1 . A heat exchanger comprising at least one thin laminar element of substantial surface area located with at least one extended surface boundary in contact with a streamline flow of a first fluid, the laminar element defining internal passages for the flow of a second fluid, characterized in that at least a substantial portion of the boundary surface of the laminar element (14, 16, 18, 20, 84, 92) is configured with minor surface discontinuities (30,36, 82, 86) sufficient to provide surface micro turbulence in the first fluid whilst maintaining overall streamline flow thereof.
Claim 3
Dependent Claim
22 words
A heat exchanger according to Claim 1, characterized in that the surface is textured by the application of a rough porous layer.
Claim 4
Dependent Claim
21 words
A heat exchanger according to Claim 2, characterized in ther the layer is of a glass-ceramic coating of low. contact conductance.
Claim 5
Dependent Claim
18 words
A heat exchanger according to Claim 1, characterized in that the surface is textured by knurling or milling.
Claim 6
Dependent Claim
23 words
A heat exchanger according to Claim 1, characterized in that the surface is textured by irregularities having dimensions of 0.25 to 5 mm.
Claim 7
Dependent Claim
43 words
A heat exchanger according to Claim 5, characterized in that the surface is textured with external fins (36), located edgewise on the direction of flow of the first fluid, and configured to provide micro turbulence in a boundary layer of the first fluid.
Claim 8
Dependent Claim
148 words
A heat exchanger according to any of Claims 1 to 6, characterized in that the element comprises two generally parallel sheets of thermally conductive material selectively bonded together to define a labyrinth of flow passages (34) for the second fluid, wherein the passages extend substantially parallel between substantially linear zones (32) in which the sheets are bonded together, said bonded zones (32) being interrupted by a plurality of header areas (38, 38, 48), extending transversely to the passages and connecting the latter to form continuous paths for fluid between an inlet header area and an outlet header area, the sheets being locally bonded together in a plurality of spaced spots (30) in each header area, and wherein sleeves (40) are provided extending through the thickness of each of the inlet and outlet headers (38), the sleeves having peripheral apertures (48) opening into the interiors of the headers areas.
Claim 9
Dependent Claim
34 words
A heat exchanger system comprising at least one element according to Claim 7, characterized in that inlet and outlet pipes (22) extend through said sleeves (40) and are secured thereto in fluid tight relationship.
Claim 10
Dependent Claim
46 words
A heat exchanger system according to Claim 8, having multiple element, characterized in that said sleeves are ported and said pipes (22) include ported sleeves (62) which latter are rotatable relative to the sleeves (40) in the headers to balance the flow through the individual elements.
Claim 11
Dependent Claim
38 words
A heat exchanger system according to Claim 7, 8 or 9, having multiple elements, characterized in that the elements are maintained in spaced relationship by longitudinal edge flanges (24) extending perpendicular to the general plane of the elements.
Claim 12
Dependent Claim
49 words
A heat exchanger system according to any of Claims 1-10, characterized in that the internal passages define at least two alternative paths (100,118) for passage of said second fluid through the panel, and that valve means (116) are provided for diverting flow of said second fluid between said paths.
Claim 13
Dependent Claim
43 words
A heat exchanger system according to Claim 11, characterized in that the valve means (116) are provided in one of said paths (118) which provides a relatively unrestricted path for fluid between inlet and outlet headers (108,110) when the valve means is open.
Claim 14
Dependent Claim
126 words
A powered vehicle utilizing a liquid to which heat is transferred by a power train system, and wherein a heat exchanger according to any of Claims 1 to 10 is provided to transfer heat from such a liquid to an ambient fluid in which the vehicle operates; characterized in that the heat transfer means is at least one thin laminar element (92) located adjacent and substantially parallel to a portion of the structure of the vehicle (40) past which the flow of the ambient fluid is substantially streamline, the at least one laminar element being configured to maintain said streamline flow, the laminar element being configured to provide micro turbulence of a boundary layer of the ambient fluid without disrupting overall streamline flow of the fluid.
Claim 15
Dependent Claim
26 words
A vehicle according to Claim 13, characterized in that the portion of the vehicle is a side of the vehicle, a roof panel or a fairing.
References Cited (Backward Citations)
No citation records indexed.
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