Heat exchanger
A heat exchanger and fluid technology, which is applied to heat exchange equipment, heat exchanger types, indirect heat exchangers, etc., can solve the problems of reducing the heat transfer rate of low-temperature radiators and improving the heat transfer rate of low-temperature radiators.
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no. 1 approach
[0040] first of all, yes figure 1 The heat exchanger 10 of the first embodiment shown will be described. figure 1 The illustrated heat exchanger 10 is mounted on a vehicle including an engine and an electric motor as power sources for traveling. In the heat exchanger 10, engine cooling water for cooling the engine and cooling water for cooling the electric motor and its peripheral equipment circulate. In addition, since the cooling water used for cooling the electric motor and its peripheral equipment is lower than the engine cooling water, it is called "low temperature cooling water" hereinafter. The heat exchanger 10 is a composite radiator capable of cooling the engine cooling water and the low-temperature cooling water by exchanging heat between the engine cooling water and air, and by exchanging heat between the low-temperature cooling water and the air. In the present embodiment, the engine cooling water and the low-temperature cooling water correspond to the first flu...
no. 2 approach
[0076] Next, the heat exchanger 10 of the second embodiment will be described. Hereinafter, description will focus on differences from the heat exchanger 10 of the first embodiment.
[0077] Such as Figure 8 As shown, in the heat exchanger 10 of the present embodiment, a plurality of protrusions 232a are formed on the non-joint portions 231a, 231b of the inner fins 23 . The protrusion 232 a is formed not to be in contact with the inner surface of the tube 21 . The arrangement of the protrusions 232a of the non-joint portion 231a is substantially the same as the arrangement of the protrusions 232a of the non-joint portion 231b. Thus, the space separated by the joint parts 230a, 230b, the non-joint part 231a and the outer wall parts 210, 211 of the tube 21 is defined as the first space S1, and the joint part passing through the inner fin 23 is defined as the first space S1. When the space partitioned by 230b, 230c, the non-joint portion 231b, and the outer wall portions 210,...
Embodiment approach
[0103] In addition, each embodiment can also be implemented in the following aspects.
[0104] In the heat exchanger 10 of each embodiment, the space partitioned by the joint parts 230a, 230b, the non-joint part 231a of the inner fin 23, and the outer wall parts 210, 211 of the tube 21 is defined as the first space S1, and the When the space separated by the joint parts 230b, 230c of the inner fin 23, the non-joint part 231b and the outer wall parts 210, 211 of the tube 21 is used as the second space S2, the first space S1 and the second space S2 may also be relative to each other. The central line of the tube 21 in the air flow direction Y has a line-symmetrical shape. According to such a structure, the cooling water can flow more uniformly in the internal flow path of the tube 21 .
[0105] In the inner fin 23 of the first embodiment, the plurality of protrusions 210 a and 211 a may be formed line-symmetrically with respect to the central line in the airflow direction Y. I...
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