发明授权
- 专利标题: Exhaust gas heat exchanger and method of operating the same
- 专利标题(中): 废气换热器及其运行方法
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申请号: US11702755申请日: 2007-02-06
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公开(公告)号: US08020610B2公开(公告)日: 2011-09-20
- 发明人: Jörg Soldner , Sven Thumm , Roland Strähle , Harald Schatz
- 申请人: Jörg Soldner , Sven Thumm , Roland Strähle , Harald Schatz
- 申请人地址: US WI Racine
- 专利权人: Modine Manufacturing Company
- 当前专利权人: Modine Manufacturing Company
- 当前专利权人地址: US WI Racine
- 代理机构: Michael Best & Friedrich LLP
- 优先权: DE102006005362 20060207
- 主分类号: F28D7/16
- IPC分类号: F28D7/16 ; F28F3/06
摘要:
The invention relates to an exhaust gas heat exchanger in an exhaust gas recirculation arrangement. The heat exchanger includes a plate stack which is surrounded by a housing. The plate stack can include two plates which are connected at their longitudinal edges to form a flat tube which contains a turbulator through which exhaust gas flows. The heat exchanger can also include a coolant duct which is equipped with flow directing elements arranged between two flat tubes. In order to make the exhaust gas heat exchanger more resistant to changing temperature stresses, the invention provides that the flow directing elements can be formed from a corrugated plate in which ducts with inlets and outlets are formed. At least some of the ducts in the inlet area of the coolant have a nonlinear profile so that changes in length are permitted between the plate stack and the housing.