US 10,207,376 B2 · Heat exchanger

Abstract

An oil cooler has a core portion (1) formed of stacked core plates (5), a bottom plate (2), a second bottom plate (3) and a top plate (4), and these are brazed in a furnace. The core plate (5) has oil communication ports (13), cooling water communication ports (14) and an oil outlet port (15). The lower end core plate (5) has a boss portion (16) surrounding the cooling water communication port (14) and a boss portion (17) surrounding the oil outlet port (15). Opening portions (32, 33) opposite to the boss portions (16, 17) are formed through the bottom plate (2). Therefore, at the time of the brazing, a melted brazing material is not excessively gathered in the boss portion (16, 17) because the melted brazing material is absorbed in the opening portions (32, 33).

Claims2

Dependent claims

A heat exchanger, comprising:

a core portion formed of stacked core plates, and brazed on a bottom plate that is relatively thicker than each of the core plates;
and
a boss portion equipped on a part of a lower end core plate joined to the bottom plate, the boss portion being away from a reference surface of a joint therebetween,
wherein a space portion comprising an opening portion is provided at a position of the bottom plate that is opposite to the boss portion, and
wherein an outer peripheral edge of the space portion is formed into a wavy shape that changes repeatedly to have a projection portion projecting to an inner peripheral side and a concave portion set back toward an outer peripheral side.

2 more elements

Dependencies are inferred from the claim text.

Heat exchanger

Life of this patent

Heat exchanger

Life of this patent

Abstract

Claims2