초록 ▼

A heat exchanger, for an exhaust gas system (5) of an internal combustion engine (1), includes a thermoelectric module (13), converting thermal energy into electrical energy, having a hot side (17) and a cold side (18). A cooling pipe (15), for a cooling fluid, is arranged on the cold side (18) and

A heat exchanger, for an exhaust gas system (5) of an internal combustion engine (1), includes a thermoelectric module (13), converting thermal energy into electrical energy, having a hot side (17) and a cold side (18). A cooling pipe (15), for a cooling fluid, is arranged on the cold side (18) and a heating pipe (16) for a heating fluid, is arranged on the hot side (17). The cooling pipe (15) and the heating pipe (16) are stacked with the thermoelectric module (13) in a stacking direction (19) and form a stack (20). The heat transfer within the stack (20) is improved with at least one of the pipes (15, 16) being curved toward the thermoelectric module (13) at an outer pipe face (26) and with the thermoelectric module (13) curved toward the pipe (15, 16) at an outer module face (27) facing the particular pipe (15, 16).

대표청구항 ▼

1. A heat exchanger, for an exhaust system of an internal combustion engine, the heat exchanger comprising: a plurality of thermoelectric modules for converting thermal energy into electrical energy, each of the thermoelectric modules comprises a hot side and a cold side;a plurality of cooling tubes

1. A heat exchanger, for an exhaust system of an internal combustion engine, the heat exchanger comprising: a plurality of thermoelectric modules for converting thermal energy into electrical energy, each of the thermoelectric modules comprises a hot side and a cold side;a plurality of cooling tubes for conducting a cooling fluid, each of the respective cooling tubes being arranged on the cold side of a respective one of the thermoelectric modules;a plurality of heating tubes for conducting a heating fluid, each of the respective heating tubes being arranged on the hot side of a respective one of the thermoelectric modules, wherein:each of the thermoelectric modules is disposed adjacent to and between one of the cooling tubes and one of the heating tubes forming a stack of the plurality of thermoelectric modules, the plurality of cooling tubes and the plurality of heating tubes along a stacking direction;the cooling tubes and the heating tubes are curved on a tube outside to form a curved tube outside facing an adjacent one of the thermoelectric modules;each of the thermoelectric modules, which is adjacent to the curved tube outside of the at least one of the tubes in the stacking direction, is curved in a same direction as the curved tube outside, on a respective curved module outside. 2. The heat exchanger according to claim 1, wherein at least one of: the curved tube outside is convexly curved towards the adjacent thermoelectric module and the facing curved module outside of the adjacent thermoelectric module is concavely curved towards the at least one of the tubes; andthe curved tube outside is concavely curved towards the adjacent thermoelectric module and the facing curved module outside of the adjacent thermoelectric module is convexly curved towards the tube. 3. The heat exchanger according to claim 1, wherein the curved tube outside and the curved module outside, with respect to a longitudinal center plane of the stack, running parallel to the stacking direction, are configured mirror-symmetrically. 4. The heat exchanger according to claim 1, wherein the curved tube outside and the curved module outside is curved in a cross-sectional plane running parallel to the stacking direction and perpendicular to a longitudinal direction of the stack and is linear in a longitudinal section plane running parallel to the stacking direction and perpendicularly to a transverse direction of the stack. 5. The heat exchanger according to claim 1, wherein in the stacking direction, between the respective tube and the respective thermoelectric module, a heat conductive layer is arranged. 6. The heat exchanger for an exhaust system of an internal combustion engine, the heat exchanger comprising: at least one thermoelectric module for converting thermal energy into electrical energy, which at least one thermoelectric module comprises a hot side and a cold side;at least one cooling tube for conducting a cooling fluid, which is arranged on the cold side of at least one such thermoelectric module;at least one heating tube for conducting a heating fluid, which is arranged on the hot side of at least one such thermoelectric module, wherein:the at least one thermoelectric module, the at least one cooling tube and the at least one heating tube are disposed adjacent to one another in a stacking direction and form a stack;at least one of the cooling tube or the heating tube is curved on a tube outside to form a curved tube outside facing the thermoelectric module;the at least one thermoelectric module, which is adjacent to the curved tube outside of the at least one of the cooling tube or the heating tube in the stacking direction, is curved in a same direction as the curved tube outside, to provide a curved module outside facing the curved tube outside, wherein the curved tube outside is configured spring-elastically and is spring-elastically deformable through a preload force, which in a preloaded state of the stack compresses the stack in the stacking direction in such a manner that the curved tube outside in the preloaded state has a larger curvature radius than in a relaxed state, in which the preload force is missing. 7. The heat exchanger according to claim 6, wherein the curved module outside compared with the curved tube outside is rigid, so that during the preloading of the stack the curved tube outside is more strongly deformed than the curved module outside. 8. The heat exchanger according to claim 1, wherein the curved tube outside and the curved module outside are curved both in a cross-sectional plan, running parallel to the stacking direction and perpendicularly to a longitudinal direction of the stack, and also in a longitudinal section plane running parallel to the stacking direction and perpendicularly to a transverse direction of the stack. 9. The heat exchanger according to claim 8, wherein the respective heating tube and the respective cooling tube that are adjacent the thermoelectric modules are arranged one behind the other in the longitudinal direction of the stack, wherein the respective heating tube and cooling tube comprises multiple longitudinal sections, which are arranged one behind the other in the stack longitudinal direction. 10. A heat exchanger for an exhaust system of an internal combustion engine, the heat exchanger comprising: at least one thermoelectric module for converting thermal energy into electrical energy, which at least one thermoelectric module comprises a hot side and a cold side;at least one cooling tube for conducting a cooling fluid, which is arranged on the cold side of at least one such thermoelectric module;at least one heating tube for conducting a heating fluid, which is arranged on the hot side of at least one such thermoelectric module, wherein:the at least one thermoelectric module, the at least one cooling tube and the at least one heating tube are disposed adjacent to one another in a stacking direction and form a stack;at least one of the cooling tube or the heating tube is curved on a tube outside to form a curved tube outside facing the thermoelectric module;the at least one thermoelectric module, which is adjacent to the curved tube outside of the at least one of the cooling tube or the heating tube in the stacking direction, is curved in a same direction as the curved tube outside, to provide a curved module outside facing the curved tube outside, wherein at least one of:the curved tube outside is convexly curved towards the adjacent thermoelectric module and the facing curved module outside of the adjacent thermoelectric module is concavely curved towards the at least one of the tubes; andthe curved tube outside is concavely curved towards the adjacent thermoelectric module and the facing curved module outside of the adjacent thermoelectric module is convexly curved towards the tube and, whereinwithout a preload force, which in a preloaded state of the stack compresses the stack in the stacking direction, a curvature radius of the curved tube outside and a curvature radius of the curved module outside are different. 11. The heat exchanger according to claim 10, wherein the curvature radius of the curved tube outside is smaller than the curvature radius of the curved module outside. 12. The heat exchanger according to claim 10, wherein in the preloaded state the curvature radius of the curved tube outside is substantially identical in size as the curvature radius of the curved module outside. 13. The heat exchanger for an exhaust system of an internal combustion engine, the heat exchanger comprising: at least one thermoelectric module for converting thermal energy into electrical energy, which at least one thermoelectric module comprises a hot side and a cold side;at least one cooling tube for conducting a cooling fluid, which is arranged on the cold side of at least one such thermoelectric module;at least one heating tube for conducting a heating fluid, which is arranged on the hot side of at least one such thermoelectric module, wherein:the at least one thermoelectric module, the at least one cooling tube and the at least one heating tube are disposed adjacent to one another in a stacking direction and form a stack;the cooling tube and the heating tube are curved on a tube outside to form a curved tube outside facing the thermoelectric module;the at least one thermoelectric module, which is adjacent to the respective curved tube outside of the cooling tube and the heating tube in the stacking direction, is curved in a same direction as the curved tube outside, to provide a curved module outside facing the curved tube outside, wherein the hot side and the cold side each form a curved module outside. 14. An internal combustion engine for a motor vehicle, the internal combustion engine comprising: an engine block, which comprises multiple combustion chambers;an exhaust system for discharging exhaust gas from the combustion chambers;a cooling circuit for cooling the engine block,a heat exchanger comprising:a plurality of thermoelectric modules for converting thermal energy into electrical energy, each of the thermoelectric modules comprises a hot side and a cold side;a plurality of cooling tubes for conducting a cooling fluid, each of the respective cooling tubes being arranged on the cold side of a respective one of the thermoelectric modules;a plurality of heating tubes for conducting a heating fluid, each of the respective heating tubes being arranged on the hot side of a respective one of the thermoelectric modules, wherein:each of the thermoelectric modules is disposed adjacent to and between one of the cooling tubes and one of the heating tubes forming a stack of the plurality of thermoelectric modules, the plurality of cooling tubes and the plurality of heating tubes arranged along a stacking direction;the cooling tubes and the heating tubes are curved on a tube outside to form a curved tube outside facing an adjacent one of the thermoelectric modules;each of the thermoelectric modules, which is adjacent to the curved tube outside of the at least one of the tubes in the stacking direction is curved in a same direction as the curved tube outside, on a respective curved module outside, wherein the heating tube is fluidically incorporated in the exhaust system and the cooling tube is fluidically incorporated in the cooling circuit. 15. The internal combustion engine according to claim 14, wherein at least one of: the curved tube outside is convexly curved towards the adjacent thermoelectric module and the facing curved module outside of the adjacent thermoelectric module is concavely curved towards the at least one of the tubes; andthe curved tube outside is concavely curved towards the adjacent thermoelectric module and the facing curved module outside of the adjacent thermoelectric module is convexly curved towards the tube. 16. The internal combustion engine according to claim 14, further comprising heat conductive layer arranged, in the stacking direction, between the curved tube outside and the curved module outside. 17. The internal combustion engine according to claim 15, wherein: a preload force applying arrangement applies a preload force to provide a preloaded state in which the stack is compressed in the stacking direction;without the preload force, a curvature radius of the curved tube outside and a curvature radius of the curved module outside are different. 18. The internal combustion engine according to claim 17, wherein the curvature radius of the curved tube outside is smaller than the curvature radius of the curved module outside. 19. The internal combustion engine according to claim 14, wherein: the curved tube outside is configured spring-elastically and is spring-elastically deformable upon the application of a preload force;a preload force applying arrangement applies a preload force to provide a preloaded state in which the stack is compressed in the stacking direction;the curved tube outside, in the preloaded state, has a larger curvature radius than in a relaxed state, in which the preload force is missing. 20. The internal combustion engine according to claim 19, wherein the curved module outside, compared with the curved tube outside, is rigid, whereby in the a preloaded state, upon the application of the preload force, the curved tube outside is deformed more than the curved module outside.