Patent US6357518B1 successfully refreshed from Google Patents.
US6357518B1
Expired / Lapsed
US
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Corrugated fin for heat exchanger
Assignee: Denso Corp
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Filing: 2000-01-31
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Granted: 2002-03-19
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Expires: 2020-01-31
Abstract
Abstract A corrugated fin for a double heat exchanger having a condenser and a radiator integrally includes a condenser fin and a radiator fin. Each of the condenser fin and the radiator fin has plural bent portions and plural flat portions each of which connects adjacent bent portions. A louver-forming processing amount of the flat portion of the condenser fin is set smaller than that of the flat portion of the radiator fin. Plural dimple-shaped plastically deformed portions are formed in the flat portion of the condenser fin, so that a whole processing amount of the condenser fin becomes substantially equal to that of the radiator fin. As a result, a radius of curvature of each bent portion of the condenser fin is substantially equal to that of the radiator fin, and the integrated fin is restricted from being deformed.
Inventors
- 👤 Tatsuo Sugimoto
- 👤 Takaaki Sakane
- 👤 Kenichi Kachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:07
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/126; F28F1/128; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/0408; F28D1/0426; F28D1/0435; F28D21/00; F28D2021/0019; F28D2021/008; F28D2021/0084; F28D2021/0091; F28D2021/0094; F28F2215/00; F28F2215/02
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
129 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion; wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; the first flat portion has a closed plastically deformed portion formed by plasticity processing; and the plastically deformed portion is a concave-convex portion.
Claim 2
Dependent Claim
129 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion; wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; the first flat portion has a closed plastically deformed portion formed by plasticity processing; and the plastically deformed portion is a concave-convex portion.
Claim 3
Dependent Claim
48 words
The fin according to claim 1 , wherein the first flat portion is disposed at one side of a reference line extending substantially perpendicular to a ridge of each of the bent portions, and the second flat portion is disposed at the other side of the reference line.
Claim 4
Dependent Claim
16 words
The fin according to claim 1 , wherein each tube is formed into a flat shape.
Claim 5
Dependent Claim
18 words
The fin according to claim 1 , wherein the plastically deformed portion is formed into a dimple shape.
Claim 6
Dependent Claim
197 words
A corrugated fin for a double heat exchanger having a plurality of first tubes through which a first fluid flows, and a plurality of second tubes through which a second fluid flows, the fin comprising: a first fin disposed between adjacent first tubes, the first fin including a plurality of first bent portions, and a plurality of first flat portions each connecting adjacent first bent portions and having a louver formed by partially cutting and raising each of the first flat portions; and a second fin disposed between adjacent second tubes and formed integrally with the first fin, the second fin including a plurality of second bent portions, and a plurality of second flat portions each connecting adjacent second bent portions and having a louver formed by partially cutting and raising each of the second flat portions, wherein: a processing amount of one of the first flat portions for forming the louver is smaller than that of one of the second flat portions integrated with the one of the first flat portions; the one of the first flat portions has a plastically deformed portion formed by plasticity processing; and the plastically deformed portion is a concave-convex portion.
Claim 7
Dependent Claim
197 words
A corrugated fin for a double heat exchanger having a plurality of first tubes through which a first fluid flows, and a plurality of second tubes through which a second fluid flows, the fin comprising: a first fin disposed between adjacent first tubes, the first fin including a plurality of first bent portions, and a plurality of first flat portions each connecting adjacent first bent portions and having a louver formed by partially cutting and raising each of the first flat portions; and a second fin disposed between adjacent second tubes and formed integrally with the first fin, the second fin including a plurality of second bent portions, and a plurality of second flat portions each connecting adjacent second bent portions and having a louver formed by partially cutting and raising each of the second flat portions, wherein: a processing amount of one of the first flat portions for forming the louver is smaller than that of one of the second flat portions integrated with the one of the first flat portions; the one of the first flat portions has a plastically deformed portion formed by plasticity processing; and the plastically deformed portion is a concave-convex portion.
Claim 8
Dependent Claim
23 words
The fin according to claim 5 , wherein the plastically deformed portion is formed only on the one of the first flat portions.
Claim 9
Dependent Claim
32 words
The fin according to claim 5 , wherein the second tubes are disposed at a downstream air side of the first tubes with respect to air passing through the double heat exchanger.
Claim 10
Dependent Claim
32 words
The fin according to claim 5 , wherein the first tubes are disposed at a downstream air side of the second tubes with respect to air passing through the double heat exchanger.
Claim 11
Dependent Claim
28 words
The fin according to claim 5 , wherein the double heat exchanger includes a condenser composed of the first tubes and a radiator composed of the second tubes.
Claim 12
Dependent Claim
19 words
The fin according to claim 5 , wherein the processing amount is defined by the number of the louver.
Claim 13
Dependent Claim
23 words
The fin according to claim 5 , wherein each of the first tubes and the second tubes is formed into a flat shape.
Claim 14
Dependent Claim
19 words
The fin according to claim 5 , wherein the plastically deformed portion is formed adjacent to the bent portions.
Claim 15
Dependent Claim
135 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion, wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; the first flat portion has a plastically deformed portion formed by plastically processing; and a length of the plastically deformed portion is smaller than a length of the louver.
Claim 16
Dependent Claim
135 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion, wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; the first flat portion has a plastically deformed portion formed by plastically processing; and a length of the plastically deformed portion is smaller than a length of the louver.
Claim 17
Dependent Claim
204 words
A corrugated fin for a double heat exchanger having a plurality of first tubes through which a first fluid flows, and a plurality of second tubes through which a second fluid flows, the fin comprising: a first fin disposed between adjacent first tubes, the first fin including a plurality of first bent portions, and a plurality of first flat portions each connecting adjacent first bent portions and having a louver formed by partially cutting and raising each of the first flat portions; and a second fin disposed between adjacent second tubes and formed integrally with the first fin, the second fin including a plurality of second bent portions, and a plurality of second flat portion each connecting adjacent second bent portions and having a louver formed by partially cutting and raising each of the second flat portions, wherein: a processing amount of one of the first flat portions for forming the louver is smaller than that of one of the second flat portions integrated with the one of the first flat portions; the one of the first flat portions has a plastically deformed portion formed by plastically processing; and a length of the plastically deformed portion is smaller than a length of the louver.
Claim 18
Dependent Claim
204 words
A corrugated fin for a double heat exchanger having a plurality of first tubes through which a first fluid flows, and a plurality of second tubes through which a second fluid flows, the fin comprising: a first fin disposed between adjacent first tubes, the first fin including a plurality of first bent portions, and a plurality of first flat portions each connecting adjacent first bent portions and having a louver formed by partially cutting and raising each of the first flat portions; and a second fin disposed between adjacent second tubes and formed integrally with the first fin, the second fin including a plurality of second bent portions, and a plurality of second flat portion each connecting adjacent second bent portions and having a louver formed by partially cutting and raising each of the second flat portions, wherein: a processing amount of one of the first flat portions for forming the louver is smaller than that of one of the second flat portions integrated with the one of the first flat portions; the one of the first flat portions has a plastically deformed portion formed by plastically processing; and a length of the plastically deformed portion is smaller than a length of the louver.
Claim 19
Dependent Claim
131 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion; wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; the first flat portion has a plastically deformed portion formed by plastically processing; and the plastically deformed portion is formed adjacent to the bent portions.
Claim 20
Dependent Claim
131 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion; wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; the first flat portion has a plastically deformed portion formed by plastically processing; and the plastically deformed portion is formed adjacent to the bent portions.
Claim 21
Dependent Claim
200 words
A corrugated fin for a double heat exchanger having a plurality of first tubes through which a first fluid flows, and a plurality of second tubes through which a second fluid flows, the fin comprising: a first fin disposed between adjacent first tubes, the first fin including a plurality of first bent portions, and a plurality of first flat portions each connecting adjacent first bent portions and having a louver formed by partially cutting and raising each of the first flat portions; and a second fin disposed between adjacent second tubes and formed integrally with the first fin, the second fin including a plurality of second bent portions, and a plurality of second flat portion each connecting adjacent second bent portions and having a louver formed by partially cutting and raising each of the second flat portions; wherein: a processing amount of one of the first flat portions for forming the louver is smaller than that of one of the second flat portions integrated with the one of the first flat portions; the one of the first flat portions has a plastically deformed portion formed by plastically processing; and the plastically deformed portion is formed adjacent to the bent portions.
Claim 22
Dependent Claim
200 words
A corrugated fin for a double heat exchanger having a plurality of first tubes through which a first fluid flows, and a plurality of second tubes through which a second fluid flows, the fin comprising: a first fin disposed between adjacent first tubes, the first fin including a plurality of first bent portions, and a plurality of first flat portions each connecting adjacent first bent portions and having a louver formed by partially cutting and raising each of the first flat portions; and a second fin disposed between adjacent second tubes and formed integrally with the first fin, the second fin including a plurality of second bent portions, and a plurality of second flat portion each connecting adjacent second bent portions and having a louver formed by partially cutting and raising each of the second flat portions; wherein: a processing amount of one of the first flat portions for forming the louver is smaller than that of one of the second flat portions integrated with the one of the first flat portions; the one of the first flat portions has a plastically deformed portion formed by plastically processing; and the plastically deformed portion is formed adjacent to the bent portions.
Claim 23
Dependent Claim
121 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion; wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; and the first flat portion has a closed plastically deformed portion formed by plasticity processing.
Claim 24
Dependent Claim
121 words
A corrugated fin for a heat exchanger having a plurality of tubes through which a fluid flows, the fin being disposed between adjacent tubes, the fin comprising: a plurality of bent portions; and a plurality of flat portions each connecting adjacent bent portions to form the corrugated fin, each of the flat portions having a louver formed by partially cutting and raising each of the flat portions, and including a first flat portion and a second flat portion; wherein: a processing amount of the first flat portion for forming the louver is smaller than a processing amount of the second flat portion for forming the louver; and the first flat portion has a closed plastically deformed portion formed by plasticity processing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-03-18 | 2005-09-17 | 2006-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-03-18 | 2009-09-17 | 2010-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-03-18 | 2013-09-17 | 2014-03-19 | $7700.00 | Window Closed / Lapsed |