公开(公告)号：JPH10205999A

公开(公告)日：1998-08-04

申请号：JP637497

申请日：1997-01-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： OBATA SHINGO ,  TOKUDA SHIGERU ,  SHIBATOMI MASAHIRO ,  OHIRA SHOJI ,  TANAKA TOSHIO

IPC: F25D23/08

Abstract: PROBLEM TO BE SOLVED: To discharge the air in a space defined by inner and outer boxes stably at the time of filling a foamable thermal insulation material by making a recess in the outer box and air vents for filling the foamable thermal insulation material at the opposite ends of the recess. SOLUTION: A recess 11 is made in an outer box 4 by press and holes 12 are made at the opposite ends thereof so that the air in a space defined by inner and outer boxes 2, 4 is discharged stably at the time of filling a foamable thermal insulation material 3. According to the arrangement, no cavity is generated in the foamed thermal insulation material 3 and the labor conventionally required for bonding a porous soft urethane foams through a paste layer in order to prevent leakage of the foamed thermal insulation material 3 through the air vent along with the air can be saved at the time of filling the foamed thermal insulation material 3. Furthermore, a press pin 13 can be protected against breakage and a steel outer box 4 can be protected against cracking at the time of making the air vent 11 by means of the press pin 13 and a die 14.