US 11,703,018 B1
Exhaust heat recovery device
Tooru Hisanaga, Saitama (JP); Naoharu Chiba, Saitama (JP); and Shirou Nakajima, Saitama (JP)
Assigned to Marelli Corporation, Saitama (JP)
Appl. No. 17/928,147
Filed by Marelli Corporation, Saitama (JP)
PCT Filed May 26, 2021, PCT No. PCT/JP2021/020078
§ 371(c)(1), (2) Date Nov. 28, 2022,
PCT Pub. No. WO2021/241655, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2020-094806 (JP), filed on May 29, 2020.
Int. Cl. F02M 26/30 (2016.01); F01N 5/02 (2006.01); F01N 13/08 (2010.01); F02M 26/28 (2016.01); F02M 26/26 (2016.01)
CPC F02M 26/30 (2016.02) [F01N 5/02 (2013.01); F01N 13/08 (2013.01); F02M 26/26 (2016.02); F02M 26/28 (2016.02)] 12 Claims
OG exemplary drawing
 
1. An exhaust heat recovery device configured to recover heat of exhaust gas discharged from an engine by heat exchange with a refrigerant, the exhaust heat recovery device comprising:
a first flow path member in which a first flow path through which the exhaust gas flows is formed;
a second flow path member which is provided adjacent to the first flow path member, in which a second flow path that bypasses a part of the first flow path is formed, and which includes a heat exchange unit configured to perform heat exchange between the exhaust gas flowing in the second flow path and the refrigerant;
a valve mechanism configured to switch between opening and closing of the first flow path and the second flow path by rotation of a rotation shaft portion disposed in the first flow path member; and
a drive unit which includes a drive shaft configured to rotate the rotation shaft portion, wherein
the second flow path member is disposed so as to be inclined with respect to a flow direction of the exhaust gas in the first flow path, and
the drive shaft extends toward the first flow path member and is connected to the rotation shaft portion in a region formed on a lateral side of the second flow path member when viewed in an axial direction of the drive shaft of the drive unit by disposing the second flow path member so as to be inclined with respect to the first flow path member.