Patent US5222551A successfully refreshed from Google Patents.
US5222551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate-type heat exchanger
Assignee: Denso Corp
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Filing: 1992-11-20
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Granted: 1993-06-29
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Expires: 2012-11-20
Abstract
Abstract A laminate-type heat exchanger having a plurality of component plates each having a flange and projection formed along the circumference thereof, raised portions and hollowed portions formed at both ends of an area surrounded by the projection and which define together reservoirs, respectively, and an intermediate wall formed in an area except for the raised and hollowed portions and which has a height equal to half of the flange and raised portions, the plates adjacent at one side being laminated one on another with one side of the plate set opposite to the same side of the adjacent one and brazed to each other at their respective flanges and hollowed portions while the plates adjacent at the other side being laminated one on another are brazed to each other at their respective projections and raised portions.
Inventors
- 👤 Euto Hasegawa
- 👤 Yoshiyuki Yamauchi
- 👤 Masahiro Shimoya
- 👤 Toshio Ohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:57
CPC Classifications
F; F25; F25B; F25B40/00; F28; F28D; F28D9/00; F28D9/0031; F28D9/0043; F28D9/005; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/042; F28F3/046
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
198 words
A laminate-type heat exchanger comprising a plurality of thermally conductive plates so laminated as to define, between them, paths for a high and low-temperature media, respectively, between which a heat exchange is carried out through the plates; each of said plates being formed to have a flange formed along the circumference thereof, a projection formed along said flange, raised portions formed at ends of an area surrounded by said projection, each having the same height as said projection and forming a part of a medium reservoir, hollowed portions formed adjacent to said raised portions, respectively, each having the same height as said flange and forming another part of a medium reservoir, and an intermediate wall formed in a portion of said area surrounded by said projection except for said raised portions and hollowed portions and having a height equal to half of that from said flange to said projection, said plurality of plates being laminated one on another by brazing the flange and hollowed portions of each of said plates to those of an adjoining plate at one side thereof and said projection and raised portions thereof to those of an adjoining plate at the other side thereof.
Claim 2
Dependent Claim
198 words
A laminate-type heat exchanger comprising a plurality of thermally conductive plates so laminated as to define, between them, paths for a high and low-temperature media, respectively, between which a heat exchange is carried out through the plates; each of said plates being formed to have a flange formed along the circumference thereof, a projection formed along said flange, raised portions formed at ends of an area surrounded by said projection, each having the same height as said projection and forming a part of a medium reservoir, hollowed portions formed adjacent to said raised portions, respectively, each having the same height as said flange and forming another part of a medium reservoir, and an intermediate wall formed in a portion of said area surrounded by said projection except for said raised portions and hollowed portions and having a height equal to half of that from said flange to said projection, said plurality of plates being laminated one on another by brazing the flange and hollowed portions of each of said plates to those of an adjoining plate at one side thereof and said projection and raised portions thereof to those of an adjoining plate at the other side thereof.
Claim 3
Dependent Claim
23 words
A laminate-type heat exchanger as set forth in claim 1, wherein each of said plates is made of aluminum or an aluminum alloy.
Claim 4
Dependent Claim
101 words
A laminate-type heat exchanger as set forth in claim 1, wherein each of said plates has formed around said projection a recess taking said flange as the bottom and an auxiliary flange formed along the outer-circumferential open edge of said recess, each of said plurality of plates being brazed to an adjoining plate at one side at their respective recesses and hollowed portions and brazed to another adjoining plate at the other side at their respective auxiliary flanges, projections and raised portions, a space defined by said recesses formed around said projection between said adjoining plates forming a heat insulation space.
Claim 5
Dependent Claim
22 words
A laminate-type heat exchanger as set forth in claim 1, wherein there are formed concave and convex portions on said intermediate wall.
Claim 6
Dependent Claim
22 words
A laminate-type heat exchanger as set forth in claim 3, wherein there are formed concave and convex portions on said intermediate wall.
Claim 7
Dependent Claim
29 words
A laminate-type heat exchanger as set forth in claim 4, wherein said concave and convex portions formed on said intermediate wall take the form of a rib or recess.
Claim 8
Dependent Claim
29 words
A laminate-type heat exchanger as set forth in claim 5, wherein said concave and convex portions formed on said intermediate wall take the form of a rib or recess.
References Cited (Backward Citations)
US3360038A
Cited
US4162703A
Cited
US4047359A
Cited
GB2005398A
Cited
US4653581A
Cited
JPS6425915A
Cited
US4872578A
Cited
JPH02127966A
Cited
JPH03164689A
Cited
JPH041278A
Cited
US5069276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |