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Title:
HEAT EXCHANGER
Document Type and Number:
Japanese Patent JP2014126311
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a cooling device including a heat exchanger having the improved reliability for the welding between a hairpin and a return bend, and capable of washing a food freezer or the like frequently by spraying water in the food freezer.SOLUTION: An evaporator 2b in a cooling device includes: a hairpin 31 having a U-shaped bent portion 31h formed by bending a metal pipe into a U-shape and a linear portion 31s formed continuously from a bent terminal end 31e of the U-shaped bent portion 31h and having a predetermined length; and a return bend 30 that is a U-shaped metal pipe. One of the hairpin 31 and the return bend 30 is inserted into the other, and one of the hairpin 31 and the return bend 30 is welded to the other along an outer periphery of the other at a position offset by a predetermined length P1 from an end surface 31 or 30a of the other arranged outside.

Inventors:
MATSUMOTO MITSUGI
HIRANO TAKASHI
MARUYAMA HIDEAKI
HARUHARA TADAO
KIYONO SHOZO
TOMIOKA AKIRA
NAKAJIMA YOICHI
ASANUMA KAZUNORI
Application Number:
JP2012284052A
Publication Date:
July 07, 2014
Filing Date:
December 27, 2012
Export Citation:
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Assignee:
ORION MACHINERY CO LTD
International Classes:
F28F1/32; F28F21/08
Domestic Patent References:
JPS5661599A1981-05-27
JPH09264128A1997-10-07
JPH11325754A1999-11-26



 
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