Heat exchanger and exhaust heat recovery device with the heat exchanger

Abstract

To provide a small-sized exhaust heat recovery device in a heat exchanger for heat exchanging between exhaust gas and cooling medium, enabling much smaller formation to be attained by a less number ofcomponents and further enabling an efficient heat recovery to be carried out. A heat exchanger (1) comprises: a plurality of heat exchanging segments (10) arranged in parallel to each other in a housing; a seal member (23) liquid-tightly connected to the housing to support heat exchanging segments for forming a cooling medium flow passage (FP) at each of clearances of the heat exchanging segmentsadjacent to each other; and a holding tool (24) having a flow regulating part (24xd) for guiding cooling medium introduced from a cooling medium feeding port (21b) to the cooling medium flow passageto hold each of the heat exchanging segments. Each of the heat exchanging segments comprises a casing (11) having an opening only at one surface and having its outside liquid-tightly sealed by the seal member, and a guide member (12) stored in the casing and having a plurality of flow passages (GP) allowing only the exhaust gas flow in a predetermined direction to be flowed.

Description

technical field [0001] The present invention relates to a heat exchanger and an exhaust heat recovery device provided with the heat exchanger, and more particularly to a heat exchanger and an exhaust heat recovery device suitable for internal combustion engines. Background technique [0002] In order to respond to the demand for improved energy efficiency, various industries have taken measures to recover and reuse the heat of the gas exhausted into the atmosphere, that is, the exhaust heat. Especially in the field of automobiles equipped with internal combustion engines, in order to improve the overall thermal efficiency, the exhaust heat recovery device that recovers the heat of the exhaust gas of the internal combustion engine is installed in the exhaust pipe, and the exhaust gas is heated by exchanging heat with the exhaust heat. Cooling medium supply technology that promotes warm-up and improves the performance of heating devices. For example, the following Patent Docu...

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Problems solved by technology

[0021] On the other hand, the basic structure of the heat exchanger disclosed in Patent Document 6 is different from the above-mentioned heat exchangers in that the "intake cone" and "air outlet cone" of separate parts are not provided, but their large valve devices (valve) are included. body) installed on the main body, it may not be able to meet the requirements of miniaturization

That is, although the structure related to heat exchange in Patent Document 6 is substantially the same as that of the above-mentioned heat exchangers in which the cooling medium passes through the exhaust gas, it is large and complicated in relation to the above-mentioned valve device. structure, requires a large number of parts, so miniaturization is not easy

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