US7032577B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust gas heat exchanger
Assignee: Mahle Behr GmbH and Co KG
•
Filing: 2003-01-22
•
Granted: 2006-04-25
•
Expires: 2023-01-22
Abstract
Abstract The invention relates to an exhaust gas heat exchanger ( 2 ) comprising a bundle of pipes ( 21 ) consisting of exhaust gas pipes ( 22 ) and a bypass channel ( 23 ) in a common housing. The pipe bundle is arranged in a first chamber that is crossflown by a liquid coolant and the bypass channel is arranged in a second, separate chamber. The pipe bundle and the bypass channel lead into a common exhaust gas inlet area and a common exhaust gas outlet area in which an exhaust gas valve actuated by a servo-drive is arranged, said valve guiding the exhaust gas flow through the pipe bundle or the bypass channel. According to the invention, the exhaust gas valve has a movable closing organ that is resistant to bending, said organ being preferably embodied as a pivoting semi-flap ( 27 ) that is fixed with a longitudinal side ( 28 ) to a drive shaft ( 30 ) that is arranged crosswise relative to the exhaust gas flow (A).
Inventors
- 👤 Jürgen Rosin
- 👤 Bernhard Bronischewski
- 👤 Ulrich Fassbender
- 👤 Manfred Heinze
- 👤 Andreas Krien
- 👤 Markus Wallraven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:03
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/16; F28D7/1684; F28F; F28F27/00; F28F27/02; F02; F02M; F02M26/00; F02M26/13; F02M26/22; F02M26/23; F02M26/25; F02M26/26; F02M26/29; F02M26/32; F02M26/52; F02M26/55; F28D21/00; F28D21/0001; F28D21/0003; F28F2250/00; F28F2250/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
181 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as a pivotable half-flap, one longitudinal side of which is secured to a drive shaft arranged transversely with respect to the exhaust gas flow (A), and wherein the half-flap is arranged in a valve housing with an approximately rectangular cross section of flow and alternately closes off one half of the cross section or the other half of the cross section.
Claim 2
Dependent Claim
181 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as a pivotable half-flap, one longitudinal side of which is secured to a drive shaft arranged transversely with respect to the exhaust gas flow (A), and wherein the half-flap is arranged in a valve housing with an approximately rectangular cross section of flow and alternately closes off one half of the cross section or the other half of the cross section.
Claim 3
Dependent Claim
33 words
The exhaust gas heat exchanger as claimed in claim 1 , wherein a partition is arranged between the drive shaft and the inlet cross sections of the tube bundle and the bypass passage.
Claim 4
Dependent Claim
39 words
The exhaust gas heat exchanger as claimed in claim 1 , wherein the half-flap closes in the exhaust gas direction of flow (A) and in the closed position is arranged obliquely with respect to the exhaust gas stream (A).
Claim 5
Dependent Claim
27 words
The exhaust gas heat exchanger as claimed in claim 1 , wherein the actuating drive comprises vacuum cell, an actuating member of which drives the closure member.
Claim 6
Dependent Claim
16 words
An exhaust gas recirculation system comprising an exhaust gas heat exchanger according to claim 1 .
Claim 7
Dependent Claim
12 words
A motor vehicle comprising a heat exchanger according to claim 1 .
Claim 8
Dependent Claim
183 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as a pivot flap with an approximately centrally arranged pivot axle and two opposite sealing edges, wherein a partition with a concave sealing surface facing the pivot flap is arranged between the pivot axle and the inlet cross sections of the tube bundle and of the bypass passage, and wherein the downstream sealing edge slides along the sealing surface over the pivoting range.
Claim 9
Dependent Claim
183 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as a pivot flap with an approximately centrally arranged pivot axle and two opposite sealing edges, wherein a partition with a concave sealing surface facing the pivot flap is arranged between the pivot axle and the inlet cross sections of the tube bundle and of the bypass passage, and wherein the downstream sealing edge slides along the sealing surface over the pivoting range.
Claim 10
Dependent Claim
37 words
The exhaust gas heat exchanger as claimed in claim 7 , wherein the pivot flap is arranged in a housing, the cross section of flow of which widens downstream of the pivot axle, to form flow-diverting regions.
Claim 11
Dependent Claim
28 words
The exhaust gas heat exchanger as claimed in claim 7 , wherein the actuating drive comprises a vacuum cell, an actuating member of which drives the closure member.
Claim 12
Dependent Claim
16 words
An exhaust gas recirculation system comprising an exhaust gas heat exchanger according to claim 7 .
Claim 13
Dependent Claim
12 words
A motor vehicle comprising a heat exchanger according to claim 7 .
Claim 14
Dependent Claim
192 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as an angle flap with two limbs fixedly arranged approximately at right angles to one another and having a common apex, at which the closure member is mounted for rotation about a pivot axle, and wherein one limb selectively pivots about the pivot axle to respectively cover an inlet cross section of the tube bundle or the bypass passage while the other limb is oriented parallel to the exhaust gas flow (A).
Claim 15
Dependent Claim
192 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as an angle flap with two limbs fixedly arranged approximately at right angles to one another and having a common apex, at which the closure member is mounted for rotation about a pivot axle, and wherein one limb selectively pivots about the pivot axle to respectively cover an inlet cross section of the tube bundle or the bypass passage while the other limb is oriented parallel to the exhaust gas flow (A).
Claim 16
Dependent Claim
28 words
The exhaust gas heat exchanger as claimed in claim 12 , wherein the actuating drive comprises a vacuum cell, an actuating member of which drives the closure member.
Claim 17
Dependent Claim
16 words
An exhaust gas recirculation system comprising an exhaust gas heat exchanger according to claim 12 .
Claim 18
Dependent Claim
12 words
A motor vehicle comprising a heat exchanger according to claim 12 .
Claim 19
Dependent Claim
153 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as a plate slide that can move transversely with respect to the exhaust gas direction of flow (A) and has a cross-sectional area which approximately corresponds to half the cross section of flow.
Claim 20
Dependent Claim
153 words
An exhaust gas heat exchanger comprising: a tube bundle composed of exhaust-gas tubes, a bypass passage in a common housing, and an exhaust gas valve comprising a flexurally rigid, moveable closure member, wherein the tube bundle is arranged in a first space, through which liquid coolant flows, and the bypass passage is arranged in a second, separate space, wherein the tube bundle and the bypass passage open into a common exhaust gas inlet region and a common exhaust gas outlet region, wherein the exhaust gas valve is arranged in the inlet region and is actuated by an actuating drive and guides the flow of exhaust gas through the tube bundle or the bypass passage, wherein the closure member is designed as a plate slide that can move transversely with respect to the exhaust gas direction of flow (A) and has a cross-sectional area which approximately corresponds to half the cross section of flow.
Claim 21
Dependent Claim
50 words
The exhaust gas heat exchanger as claimed in claim 16 , wherein the plate slide is arranged immediately upstream of the inlet cross sections or downstream of the outlet cross sections of the exhaust gas cooler and has two parallel longitudinal edges which are arranged slideably in housing-side guide grooves.
Claim 22
Dependent Claim
28 words
The exhaust gas heat exchanger as claimed in claim 16 , wherein an actuating rod which is connected to the actuating drive is secured to the plate slide.
Claim 23
Dependent Claim
28 words
The exhaust gas heat exchanger as claimed in claim 16 , wherein the actuating drive comprises a vacuum cell, an actuating member of which drives the closure member.
Claim 24
Dependent Claim
16 words
An exhaust gas recirculation system comprising an exhaust gas heat exchanger according to claim 16 .
Claim 25
Dependent Claim
12 words
A motor vehicle comprising a heat exchanger according to claim 16 .
References Cited (Backward Citations)
DE914450C
Cited
US3353590A
Cited
JPS61237998A
Cited
JPS6388212A
Cited
US4993367A
Cited
DE4430648A1
Cited
US5617726A
Cited
DE29611034U1
Cited
US6141961A
Cited
EP0987427B1
Cited
EP1030050A1
Cited
DE19962863A1
Cited
WO2001053768A1
Cited
DE10025877A1
Cited
US6807955B2
Cited
EP1277945A1
Cited
US6718956B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-04-24 | 2009-10-24 | 2010-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-04-24 | 2013-10-24 | 2014-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-04-24 | 2017-10-24 | 2018-04-25 | $7700.00 | Window Closed / Lapsed |