Patent ID: 6450252
Filing Date: 2002-09-17
Classification: F01M,F28D

Abstract:
A heat exchanger for use with an oil changing unit, comprising:a base having a disk configuration and forming a socket at a center thereof, said base further formed with manifold block thereunder, a first circular ridge formed on the base and surrounding said socket, and a second circular ridge formed on a peripheral of the base; a first tube securely assembled to the socket and having an orifice in a wall thereof; a first cylinder attached to the first circular ridge and enclosing the first tube therein, the first cylinder including a first lid enveloped and secured onto the first tube and tightly sealing an upper end thereof such that the orifice of the first tube is located within the first cylinder; and a second cylinder attached to the second circular ridge and enclosing the first tube therein, the second cylinder including a second lid enveloped and secured onto the first tube and tightly sealing an upper end.