Patent US7108054B2 successfully refreshed from Google Patents.
US7108054B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Honeywell International Inc
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Filing: 2003-09-11
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Granted: 2006-09-19
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Expires: 2023-09-11
Abstract
Abstract An exemplary heat exchanger, suitable for use in exhaust gas recirculation to cool exhaust gas, includes a cover plate having a plurality of openings, an upper plate having a plurality of openings, a lower plate having a plurality of openings and a bottom plate where seals exist between various plates to form at least one gas flow space and at least one liquid flow space. Various other exemplary heat exchanger configurations are also disclosed.
Inventors
- 👤 Roland Dilley
- 👤 Richard Paul Beldam
- 👤 Steven M. Ayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:31
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0031; F28D9/0043; F28D9/005; F02; F02M; F02M26/00; F02M26/13; F02M26/22; F02M26/29; F02M26/32; F28D9/0012; F28D9/0018; F28F; F28F27/00; F28F27/02; F28F9/00; F28F9/02; F28F9/026; F28F9/0263; F28D21/00; F28D21/0001; F28D21/0003; F28F2250/00; F28F2250/10; F28F2250/104
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
461 words
A heat exchanger for use in exhaust gas recirculation to cool exhaust gas, the heat exchanger comprising: a substantially rectangular cover plate having a widthwise dimension, a lengthwise dimension that exceeds the widthwise dimension and a plurality of openings that include a liquid inlet opening positioned proximate to an end of a lengthwise side of the cover plate and a liquid outlet opening positioned proximate to an opposing end of an opposing lengthwise side of the cover plate and an exhaust gas inlet opening positioned proximate to a widthwise side, of the cover plate and an exhaust gas outlet opening positioned proximate to an opposing widthwise side of the cover plate wherein the cross-sectional flow area of the exhaust gas inlet opening exceeds the cross-sectional flow area of the liquid inlet opening, wherein the cross-sectional flow area of the exhaust gas outlet opening exceeds the cross-sectional flow area of the liquid outlet opening; a substantially rectangular upper plate having a widthwise dimension, a lengthwise dimension that exceeds the widthwise dimension and a plurality of openings that include a liquid inlet opening positioned proximate to an end of a lengthwise side of the upper plate and a liquid outlet opening positioned proximate to an opposing end of an opposing lengthwise side of the upper plate and an exhaust gas inlet opening positioned proximate to a widthwise side, of the upper plate and an exhaust gas outlet opening positioned proximate to an opposing widthwise side of the upper plate, wherein the exhaust gas inlet opening forms a seal with the exhaust gas inlet opening of the cover plate and the exhaust gas outlet opening forms a seal with the exhaust gas outlet opening of the cover plate to prevent exhaust gas flow into a liquid flow space defined by and between the cover plate and the upper plate; a substantially rectangular lower plate having a widthwise dimension, a lengthwise dimension that exceeds the widthwise dimension and a plurality of openings that include a liquid inlet opening positioned proximate to an end of a lengthwise side of the lower plate and a liquid outlet opening positioned proximate to an opposing end of an opposing lengthwise side of the lower plate and an exhaust gas inlet opening positioned proximate to a widthwise side of the lower plate and an exhaust gas outlet opening positioned proximate to an opposing widthwise side of the lower plate wherein the liquid inlet opening forms a seal with the liquid inlet opening of the upper plate and the liquid outlet opening forms a seal with the liquid outlet opening of the upper plate to prevent liquid flow into an exhaust gas flow space defined by and between the upper plate and the lower plate; and a substantially rectangular bottom plate.
Claim 2
Dependent Claim
461 words
A heat exchanger for use in exhaust gas recirculation to cool exhaust gas, the heat exchanger comprising: a substantially rectangular cover plate having a widthwise dimension, a lengthwise dimension that exceeds the widthwise dimension and a plurality of openings that include a liquid inlet opening positioned proximate to an end of a lengthwise side of the cover plate and a liquid outlet opening positioned proximate to an opposing end of an opposing lengthwise side of the cover plate and an exhaust gas inlet opening positioned proximate to a widthwise side, of the cover plate and an exhaust gas outlet opening positioned proximate to an opposing widthwise side of the cover plate wherein the cross-sectional flow area of the exhaust gas inlet opening exceeds the cross-sectional flow area of the liquid inlet opening, wherein the cross-sectional flow area of the exhaust gas outlet opening exceeds the cross-sectional flow area of the liquid outlet opening; a substantially rectangular upper plate having a widthwise dimension, a lengthwise dimension that exceeds the widthwise dimension and a plurality of openings that include a liquid inlet opening positioned proximate to an end of a lengthwise side of the upper plate and a liquid outlet opening positioned proximate to an opposing end of an opposing lengthwise side of the upper plate and an exhaust gas inlet opening positioned proximate to a widthwise side, of the upper plate and an exhaust gas outlet opening positioned proximate to an opposing widthwise side of the upper plate, wherein the exhaust gas inlet opening forms a seal with the exhaust gas inlet opening of the cover plate and the exhaust gas outlet opening forms a seal with the exhaust gas outlet opening of the cover plate to prevent exhaust gas flow into a liquid flow space defined by and between the cover plate and the upper plate; a substantially rectangular lower plate having a widthwise dimension, a lengthwise dimension that exceeds the widthwise dimension and a plurality of openings that include a liquid inlet opening positioned proximate to an end of a lengthwise side of the lower plate and a liquid outlet opening positioned proximate to an opposing end of an opposing lengthwise side of the lower plate and an exhaust gas inlet opening positioned proximate to a widthwise side of the lower plate and an exhaust gas outlet opening positioned proximate to an opposing widthwise side of the lower plate wherein the liquid inlet opening forms a seal with the liquid inlet opening of the upper plate and the liquid outlet opening forms a seal with the liquid outlet opening of the upper plate to prevent liquid flow into an exhaust gas flow space defined by and between the upper plate and the lower plate; and a substantially rectangular bottom plate.
Claim 3
Dependent Claim
12 words
The heat exchanger of claim 1 , further comprising substantially rectangular openings.
Claim 4
Dependent Claim
23 words
The heat exchanger of claim 1 , further comprising one or more gas flow headers having substantially circular and substantially rectangular cross-sectional areas.
Claim 5
Dependent Claim
23 words
The heat exchanger of claim 1 , further comprising one or more liquid flow headers having substantially circular and substantially rectangular cross-sectional areas.
Claim 6
Dependent Claim
32 words
The heat exchanger of claim 1 , further comprising gas flow headers having substantially circular and substantially rectangular cross-sectional areas and liquid flow headers having substantially circular and substantially rectangular cross-sectional areas.
Claim 7
Dependent Claim
13 words
The heat exchanger of claim 1 , wherein the seals comprise brazed seals.
Claim 8
Dependent Claim
24 words
The heat exchanger of claim 1 , wherein the cover plate, the upper plate, the lower plate and the bottom plate comprise stainless steel.
Claim 9
Dependent Claim
17 words
The heat exchanger of claim 1 , further comprising flow partitions positioned in the gas flow space.
Claim 10
Dependent Claim
16 words
The heat exchanger of claim 1 , further comprising flow partitions in the liquid flow space.
Claim 11
Dependent Claim
24 words
The heat exchanger of claim 1 , further comprising flow partitions in the liquid flow space and flow partitions in the gas flow space.
Claim 12
Dependent Claim
30 words
The heat exchanger of claim 1 , further comprising surface indicia on one or more of the plates that act to increase surface area of the one or more plates.
Claim 13
Dependent Claim
39 words
The heat exchanger of claim 1 , further comprising surface indicia on one or more of the plates that act to increase turbulence of liquid flow or gas flow in the liquid flow space or gas flow space, respectively.
Claim 14
Dependent Claim
55 words
The heat exchanger of claim 1 , wherein the liquid flow space has a cross-sectional area and a height sufficient to maintain an average Reynolds number of greater than or equal to approximately 2000 for a liquid flow rate to the liquid flow space of greater than or equal to approximately 160 ml per second.
Claim 15
Dependent Claim
15 words
The heat exchanger of claim 1 , further comprising one or more additional upper plates.
Claim 16
Dependent Claim
15 words
The heat exchanger of claim 1 , further comprising one or more additional lower plates.
Claim 17
Dependent Claim
22 words
The heat exchanger of claim 1 , further comprising one or more additional upper plates and one or more additional lower plates.
Claim 18
Dependent Claim
41 words
The heat exchanger of claim 1 , wherein the substantially rectangular cover plate, the substantially rectangular upper plate, the substantially rectangular lower plate and the substantially rectangular bottom plate have a widthwise dimension that varies with respect to a lengthwise dimension.
Claim 19
Dependent Claim
24 words
The heat exchanger of claim 17 , wherein, upon operation of the heat exchanger, the lengthwise dimension aligns substantially with the Earth's gravitational force.
Claim 20
Dependent Claim
13 words
The heat exchanger of claim 1 , further comprising curved substantially rectangular plates.
Claim 21
Dependent Claim
24 words
The heat exchanger of claim 1 , wherein the gas inlet connects to a conduit to receive exhaust gas from an internal combustion engine.
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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) | 2009-09-18 | 2010-03-20 | 2010-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-09-18 | 2014-03-20 | 2014-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-09-18 | 2018-03-20 | 2018-09-19 | $7700.00 | Window Closed / Lapsed |