Heat exchanger

Patent metadata

Field	Value
Publication number	US-9874407-B2
Application number	US-201314888801-A
Country	US
Kind code	B2
Filing date	May 8, 2013
Priority date	May 8, 2013
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A heat exchanger includes: heat exchanger bodies arranged in parallel, each allowing a fluid to be cooled to flow therethrough in one direction; a housing that forms a coolant passage that allows a coolant to flow therethrough around each of the heat exchanger bodies; a coolant inlet portion and a coolant outlet portion located in a position corresponding to first ends of the heat exchanger bodies in a flow direction of the fluid to be cooled; a separating portion that separates the coolant passages in a position corresponding to second ends of the head exchanger bodies in the flow direction of the fluid to be cooled so that a communicating portion that allows the coolant passages to communicate with each other is left; and a flow passage area increasing portion that increases a flow passage area of the communicating portion. This structure achieves good cooling performance in the heat exchanger.

First claim

The invention claimed is:

1. A heat exchanger comprising:
heat exchanger bodies arranged in parallel, each allowing a fluid to be cooled to flow therethrough in one direction;
a housing that forms a coolant passage that allows a coolant to flow therethrough around each of the heat exchanger bodies;
a coolant inlet portion and a coolant outlet portion located in a position corresponding to first ends of the heat exchanger bodies in a flow direction of the fluid to be cooled, and introduces the coolant into the coolant passage in a direction intersecting with the parallel direction of the heat exchanger bodies, the flow direction of the fluid to be cooled coinciding with an extending direction of the heat exchanger bodies;
a coolant outlet portion that is located in the position corresponding to the first ends of the heat exchanger bodies in the flow direction of the fluid to be cooled, and discharges the coolant from the coolant passage in the direction intersecting with the parallel direction;
a separating portion that separates the coolant passages, each formed around the corresponding heat exchanger body, so that a communicating portion that allows the coolant passages to communicate with each other is left in a position corresponding to second ends of the heat exchanger bodies in the flow direction of the fluid to be cooled;
an upstream cone member that is located at a first end of the housing such that the fluid to be cooled is introduced to the heat exchanger bodies;
a downstream cone member that is located at a second end of the housing such that the fluid to be cooled is discharged from the heat exchanger bodies;
a flow passage area increasing portion that increases a flow passage area of the communicating portion,
wherein the coolant inlet portion and the coolant outlet portion are spaced away from each other in the parallel direction, and are located outside of the heat exchange bodies; and
wherein the flow passage area increasing portion is located at opposite to the coolant inlet portion and the coolant outlet portion of the housing.

2. The heat exchanger according to claim 1 , wherein
the coolant inlet portion and the coolant outlet portion are located at a downstream side of the flow direction of the fluid to be cooled in the housing.

3. The heat exchanger according to claim 1 , wherein
a coolant guide portion that rectifies the coolant is located in the coolant passage.

4. The heat exchanger according to claim 3 , wherein
the coolant guide portion is helically located around each of the heat exchanger bodies.

5. The heat exchanger according to claim 1 , wherein
a flow passage area of the coolant passage, a flow passage area of the communicating portion, a flow passage area of the coolant inlet portion, and a flow passage area of the coolant outlet portion are equal to each other.

6. The heat exchanger according to claim 1 , wherein
the separating portion includes a deflation portion.

7. The heat exchanger according to claim 1 , wherein
the coolant inlet portion is offset from central axis of the heat exchanger body.

8. The heat exchanger according to claim 1 , wherein
an inlet flow of the fluid to be cooled to a first heat exchanger body of the heat exchanger bodies is greater than an inlet flow of the fluid to be cooled to a second heat exchanger body of the heat exchanger bodies, the first heat exchanger body being located closer to the coolant inlet portion than the second heat exchanger body.

9. The heat exchanger according to claim 1 , wherein the coolant outlet portion is offset from a central axis of the heat exchanger body.

Assignees

• Tomita Sho
• Kuroki Rentaro
• Toyota Motor Co Ltd

Inventors

• Tomita Sho
• Kuroki Rentaro

Classifications

• F02B29/0437

  Liquid cooled heat exchangers · CPC title

• F02B29/0431

  Details or means to guide the ambient air to the heat exchanger, e.g. having a fan, flaps, a bypass or a special location in the engine compartment · CPC title

• F28F7/02

  Blocks traversed by passages for heat-exchange media {(F28D7/0008 takes precedence)} · CPC title

• F02B29/0475

  the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location · CPC title

• F28D2021/0082

  Charged air coolers · CPC title