US6170565B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Valeo Thermal Systems Japan Corp
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Filing: 1997-12-03
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Granted: 2001-01-09
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Expires: 2017-12-03
Abstract
Abstract A heat exchanger comprising tubes ( 4 ) for configuring a first heat exchanger (A) and tubes ( 5 ) for configuring a second heat exchanger (B), the tubes ( 4 ) and ( 5 ) being disposed upstream and down stream of a direction that air is flown, fins ( 6 ) disposed between the tubes ( 4 ), ( 5 ), and ends of the respective tubes ( 4 ), ( 5 ) connected into the respective tanks ( 2 ), ( 3 ), wherein the fins ( 6 ) have louvers ( 7 A), ( 7 B), which are formed into a group of louvers ( 7 A), ( 7 A) formed on the fins disposed in the first heat exchanger (A) and a group of louvers ( 7 B), ( 7 B) formed on the fins disposed in the second heat exchanger (B), these two groups having a different shape of louvers.
Inventors
- 👤 Kunihiko Nishishita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:43
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; F28F1/325; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/0408; F28D1/0426; F28D1/0435; F28F1/126; F28F1/128; F28F9/00; F28F9/001; F28F2009/004; F28F9/02; F28F2009/0285; F28F2009/0287; F28F2210/00; F28F2210/04; F28F2215/00; F28F2215/02; F28F2215/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
209 words
A heat exchanger comprising: a plurality of first tubes for configuring a first heat exchanger, a plurality of second tubes for configuring a second heat exchanger, the plurality of first and second tubes being juxtaposed parallel with each other and the plurality of the first tubes being disposed downstream and the plurality of the second tubes being disposed upstream with respect to a direction of air's flow, ends of the plurality of the first tubes being connected into a first pair of tanks and ends of the plurality of the second tubes being connected into a second pair of tanks, and a plurality of common fins integrally formed and stacked and extending between the plurality of the first and second tubes, wherein each of the fins has a plurality of louvers, which are divided into a first group of louvers formed on a part of the fin disposed in the first heat exchanger and a second group of louvers formed on a part of the fin disposed in the second heat exchanger, the two groups of louvers of fins being different in all of parameters including angle, number and width of louvers, and the fins and first and second tubes are integrally assembled and then brazed in an oven.
Claim 2
Dependent Claim
209 words
A heat exchanger comprising: a plurality of first tubes for configuring a first heat exchanger, a plurality of second tubes for configuring a second heat exchanger, the plurality of first and second tubes being juxtaposed parallel with each other and the plurality of the first tubes being disposed downstream and the plurality of the second tubes being disposed upstream with respect to a direction of air's flow, ends of the plurality of the first tubes being connected into a first pair of tanks and ends of the plurality of the second tubes being connected into a second pair of tanks, and a plurality of common fins integrally formed and stacked and extending between the plurality of the first and second tubes, wherein each of the fins has a plurality of louvers, which are divided into a first group of louvers formed on a part of the fin disposed in the first heat exchanger and a second group of louvers formed on a part of the fin disposed in the second heat exchanger, the two groups of louvers of fins being different in all of parameters including angle, number and width of louvers, and the fins and first and second tubes are integrally assembled and then brazed in an oven.
Claim 3
Dependent Claim
22 words
The heat exchanger according to claim 1 , wherein the two groups of louvers of the fins have a different opening direction.
Claim 4
Dependent Claim
22 words
The heat exchanger according to claim 1 , wherein the two groups of louvers of the fins have a different slit length.
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) | 2004-01-09 | 2004-07-10 | 2005-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-09 | 2008-07-10 | 2009-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-09 | 2012-07-10 | 2013-01-09 | $7700.00 | Window Closed / Lapsed |