Patent ID: 8584742
Filing Date: 2013-11-19
Classification: F28D,F28F

Abstract:
1. A heat exchanger comprising: a plurality of fin members composed of a plurality of fins arranged in parallel, the fins having both opposing end surfaces provided with a plurality of engagement grooves in parallel and at regular spaces; and a meandering pipe main body including: wherein the connection pipe between the one and the other meandering sections extends from one of the straight pipe sections of said one meandering section to one of the straight pipe sections of said other meandering section; wherein the straight pipe sections of the one and the other meandering sections are arranged in parallel to each other; wherein the opposing straight pipe sections of the one and the other meandering sections of the meandering pipe main section are paired, and wherein within the plurality of insertion gap for the fin members formed in a tiered manner between a plurality of pair of adjacent straight pipe sections, each fin member is placed so as to lie astride the one and the other meandering sections, and wherein the straight pipe sections of the one meandering section are disposed in the engagement grooves on one end surface of the fin members, and the straight pipe sections of the other meandering section are disposed in the engagement grooves on the other surface of the fin members in a secured manner; wherein said one meandering pipe section occurs in a first plane having first and second orthogonal axes, said other meandering pipe section occurs in a second plane parallel to the first plane, the straight pipe sections extend in a direction parallel to said first orthogonal axis; wherein said opposing gap separating said one and the other meandering sections extends relative to a third axis orthogonal to said first and second orthogonal axes; and wherein the connection pipe comprises a first bent portion, which extends from said one of the straight pipe sections of said one of the meandering sections, and a second bent portion, which extends from said one of the straight pipe sections of said other of the meandering sections; wherein the first bent portion has a shape that is inclined relative to the first axis so as to extend at least relative to the first axis and the second axis; wherein the second bent portion has a shape that is bent to extend along at least the third axis to narrow the distance between the one and the other meandering sections; and wherein said connection pipe as a whole has a shape twisting in a circumferential direction with regard to the axis directions of the straight pipe sections.