Patent US4019573A successfully refreshed from Google Patents.
US4019573A
Expired / Lapsed
US
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Heat exchanger
Assignee: Modine Manufacturing Co
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Filing: 1975-09-25
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Granted: 1977-04-26
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Expires: 1995-09-25
Abstract
Abstract A heat exchanger for exchanging heat between fluids comprising a conduit for flow of a first fluid therethrough comprising a manifold with a single port in one area and a pair of ports in another area and a plurality of spaced fluid tubes attached to the pair of ports with the combination of the plurality of tubes having outer peripheral surfaces describing a cylinder and the inner confronting peripheral surfaces spaced apart to provide an open area therebetween for flow of a second fluid therethrough and means for directing the second fluid over and around both the inner and outer peripheral surfaces and through the open area between the tubes for achieving maximum surface area heat transfer with minimum cross sectional area of the conduits.
Inventors
- 👤 Arthur B. Modine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:14
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/02; F28F1/025; F28D; F28D7/00; F28D7/16; F28D7/163; F28F1/10; F28F1/12; F28F1/126; F28F9/00; F28F9/02; F28F9/04; F28F9/06; F28F9/10; F28F9/16; F28F9/18; F28F9/182; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/49; Y10S165/91
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
161 words
A heat exchanger for exchanging heat between fluids, comprising: a plurality of conduits for parallel flow of a first fluid through all said conduits, each said conduit comprising a manifold with a first port at one end and a plurality of adjacent second ports spaced from said first port and a plurality of fluid tubes each attached to one of said plurality of ports, the outer peripheral surfaces of the plurality of tubes of each said conduit substantially describing a conduit cylinder and the inner confronting surfaces of said tubes of each conduit being spaced apart to provide an open fluid flow area between the tubes; means for directing a first fluid through all said conduits and thereby all said tubes; and means for directing a second fluid over and around said outer peripheral surfaces and through said open areas between the tubes for achieving maximum surface area contact heat transfer with minimum cross sectional area of each of the conduits.
Claim 2
Dependent Claim
161 words
A heat exchanger for exchanging heat between fluids, comprising: a plurality of conduits for parallel flow of a first fluid through all said conduits, each said conduit comprising a manifold with a first port at one end and a plurality of adjacent second ports spaced from said first port and a plurality of fluid tubes each attached to one of said plurality of ports, the outer peripheral surfaces of the plurality of tubes of each said conduit substantially describing a conduit cylinder and the inner confronting surfaces of said tubes of each conduit being spaced apart to provide an open fluid flow area between the tubes; means for directing a first fluid through all said conduits and thereby all said tubes; and means for directing a second fluid over and around said outer peripheral surfaces and through said open areas between the tubes for achieving maximum surface area contact heat transfer with minimum cross sectional area of each of the conduits.
Claim 3
Dependent Claim
17 words
The heat exchanger of claim 1 wherein said confronting surfaces of said spaced tubes are essentially flat.
Claim 4
Dependent Claim
20 words
The heat exchanger of claim 1 where said confronting surfaces of said spaced tubes are essentially flat and substantially parallel.
Claim 5
Dependent Claim
61 words
The heat exchanger of claim 1 wherein each said manifold comprises a flat fluid flow member having opposite ends and opposite sides, a single said first port at one said end and a pair of said second ports facing outwardly on said opposite sides of said manifold and communicating with a pair of said spaced tubes located at said side ports.
Claim 6
Dependent Claim
23 words
The heat exchanger of claim 1 wherein each conduit comprises a pair of said second ports and a corresponding pair of said tubes.
Claim 7
Dependent Claim
73 words
The heat exchanger of claim 5 wherein each of said pair of tubes comprising a conduit is of a cross section having an arcuate outer surface and a flat base inner surface facing the corresponding flat surfaces of the other tube and with said bases being spaced apart, the outer surfaces of said pair of tubes lying on a cylinder whose axial center substantially coincides with the central axis of said first port.
Claim 8
Dependent Claim
20 words
The heat exchanger of claim 6 wherein said open area between said tubes is provided with a heat transfer fin.
Claim 9
Dependent Claim
29 words
The heat exchanger of claim 6 wherein said open areas between the pairs of tubes comprising said conduits are parallel for substantially parallel flow of said second fluid therethrough.
Claim 10
Dependent Claim
27 words
The heat exchanger of claim 6 wherein said open areas between the pairs of tubes comprising said conduits are arranged for angular flow through successive said areas.
Claim 11
Dependent Claim
24 words
The heat exchanger of claim 6 wherein the spacing of said bases of each conduit is substantially uniform throughout the length of said conduit.
Claim 12
Dependent Claim
61 words
The heat exchanger of claim 10 wherein each said manifold comprises a flat fluid flow member having opposite ends and opposite sides, a single said first port at one said end and a pair of said second ports facing outwardly on said opposite sides of said manifold and communicating with a pair of said spaced tubes located at said side ports.
Claim 13
Dependent Claim
48 words
The heat exchanger of claim 11 wherein said pairs of tubes comprising said conduits are in groups with the open areas between the tubes of each group being parallel and the open areas of one group being staggered laterally with respect to those of the next adjacent group.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |