IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0182024
(2001-01-11)
|
우선권정보 |
GB-0001283 (2000-01-21) |
국제출원번호 |
PCT//GB01/00098
(2002-10-14)
|
§371/§102 date |
20021014
(20021014)
|
국제공개번호 |
WO01//53768
(2001-07-26)
|
발명자
/ 주소 |
- Stonehouse, Matthew Thomas Graham
- Leedham, Stewart William
|
출원인 / 주소 |
- Honeywell International, Inc.
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
1 |
초록
▼
An exhaust gas heat exchanger comprising an external shell (20) extending between two tube plates (30, 31) and defining a coolant chamber; internal tubes (38) forming exhaust gas passages which extend between the tube plates (30, 31); an exhaust gas manifold divided by a baffle plate (29) into first
An exhaust gas heat exchanger comprising an external shell (20) extending between two tube plates (30, 31) and defining a coolant chamber; internal tubes (38) forming exhaust gas passages which extend between the tube plates (30, 31); an exhaust gas manifold divided by a baffle plate (29) into first and second chambers (26, 28) with an exhaust gas inlet (25) and outlet (27) respectively. The baffle plate (29) is provided with a valve (51) which can be operated between an open position, which exhaust gas flows along the cooling tubes (38), and a closed position, in which exhaust gas is diverted directly from the first chamber (26) to the second chamber (28).
대표청구항
▼
1. An exhaust gas heat exchanger of the shell and tube type, said heat exchanger comprising a shell having a hollow interior between opposite ends, an exhaust gas manifold secured to one end of the shell, and thermally conductive tube means extending through the interior of the shell from said one e
1. An exhaust gas heat exchanger of the shell and tube type, said heat exchanger comprising a shell having a hollow interior between opposite ends, an exhaust gas manifold secured to one end of the shell, and thermally conductive tube means extending through the interior of the shell from said one end of the shell, the exhaust gas manifold comprising first and second exhaust gas chambers which are mutually adjacent, each of said exhaust gas chambers comprising a respective exhaust gas inlet and an exhaust gas outlet, wherein the exhaust gas inlet of the first exhaust chamber and the exhaust gas outlet of the second exhaust chamber are disposed at an angle greater than 0° and less than 180°, said tube means providing an exhaust gas flow path between the exhaust gas outlet of said first exhaust gas chamber and the exhaust gas inlet of said second exhaust gas chamber, said heat exchanger being characterised by valve means providing a gas flow path directly between said first and second exhaust gas chambers and substantially closing the exhaust gas outlet of the first exhaust chamber when said valve means is fully open, said valve means substantially closing a direct gas flow path between said first and second exhaust gas chambers when said valve means is closed, whereby when a source of flowing exhaust gas is coupled to the exhaust gas inlet of said first exhaust gas chamber and said valve means is closed, exhaust gas is constrained to flow from the exhaust gas inlet of said first exhaust gas chamber to the adjacent exhaust gas outlet of said second exhaust gas chamber by way of said thermally conductive tube means to exchange heat with fluid in the interior of the shell and surrounding said tube means, whereas when said valve means is open, exhaust gas is allowed to flow from the exhaust gas inlet of said first exhaust gas chamber directly to the adjacent exhaust gas outlet of said second exhaust gas chamber and so bypass said tube means.2. A heat exchanger as claimed in claim 1 characterised in that said shell is generally tubular between said opposite ends, and comprises a fluid inlet and a fluid outlet permitting the flow of fluid from said fluid inlet to said fluid outlet by way of the interior of the shell surrounding the thermally conductive tube means.3. An exhaust gas heat exchanger of the shell and tube type, said heat exchanger comprising a shell having a hollow interior between opposite ends, an exhaust gas manifold secured to one end of the shell, and thermally conductive tube means extending through the interior of the shell from said one end of the shell, the exhaust gas manifold comprising first and second exhaust gas chambers which are mutually adjacent, each of said exhaust gas chambers comprising a respective exhaust gas inlet and an exhaust gas outlet, said tube means providing an exhaust gas flow path between the exhaust gas outlet of said first exhaust gas chamber and the exhaust gas inlet of said second exhaust gas chamber, said heat exchanger being characterised by valve means providing a gas flow path directly between said first and second exhaust gas chambers when said valve means is open, said valve means substantially closing a direct gas flow path between said first and second exhaust gas chambers when said valve means is closed, whereby when a source of flowing exhaust gas is coupled to the exhaust gas inlet of said first exhaust gas chamber and said valve means is closed, exhaust gas is constrained to flow from the exhaust gas inlet of said first exhaust gas chamber to the adjacent exhaust gas outlet of said second exhaust gas chamber by way of said thermally conductive tube means to exchange heat with fluid in the interior of the shell and surrounding said tube means, whereas when said valve means is open, the exhaust gas outlet of said first exhaust gas chamber is substantially closed and exhaust gas is allowed to flow from the exhaust gas inlet of said first exhaust gas chamber directly to the adjacent exhaust gas outlet of said second exhaust gas chamber and so bypass said tube means and wherein said thermally conductive tube means comprises a plurality of metal tubes extending through said one end of the shell, and in that a first sub-set of said plurality of tubes extends from the exhaust gas inlet of said first exhaust gas chamber through said other end of the shell and into a further exhaust gas chamber secured to said other end of the shell, and in that a second sub-set of said tubes extends from said further exhaust gas chamber through said other end of the shell to the exhaust gas inlet of said second exhaust gas chamber.4. A heat exchanger as claimed in claim 3, characterised in that said further exhaust gas chamber is defined by said other end of the shell together with a domed member secured to the shell around said other end of the shell.5. A heat exchanger as claimed in claim 1, characterised in that said thermally conductive tube means comprises a plurality of metal tubes extending through said one end of the shell between the exhaust gas outlet of said first exhaust gas chamber and the exhaust gas inlet of said second exhaust gas chamber.6. A heat exchanger as claimed in claim 5, characterised in that said tubes are U-shaped.7. A heat exchanger as claimed in claim 1, characterised in that said first and second exhaust gas chambers are mutually contiguous on either side of a common internal wall of the manifold, said valve means being mounted in said common internal wall of the manifold.8. A heat exchanger as claimed in claim 7, characterised in that said valve means is a rotary valve mounted for rotation about a rotation axis lying substantially in said common internal wall of the manifold.9. A heat exchanger as claimed in claim 1, characterised in that when said valve means is open to allow exhaust gas to flow from the exhaust gas inlet of said first exhaust gas clamber directly to the exhaust gas outlet of said second exhaust gas chamber, the valve means substantially simultaneously closes the exhaust gas inlet of said second exhaust gas chamber.10. A heat exchanger as claimed in claim 1, characterised in that when said valve means is open to allow exhaust gas to flow from the exhaust gas inlet of said first exhaust gas chamber directly to the exhaust gas outlet of said second exhaust gas chamber, said valve means substantially directs exhaust gas in the first exhaust chamber at an angle and toward the second exhaust gas chamber.
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