PURPOSE: To prevent the formation of rigid polyurethane foam of low density and low compression strength by providing a door front iron sheet and a reinforcing plate made of an insulated iron sheet and expanding integrally a rigid polyurethane foam insulating material in a box-shaped space between the door front iron board and the reinforcing plate.
CONSTITUTION: In the door of this refrigerator, a reinforcing plate 3 is covered with a rigid urethane foam-made insulation material 6 where a rigid polyurethane foam insulation material 4 is integrally expanded in a box-shaped space which comprises the reinforcing plate 3 covered with the insulation material 6 and a door front iron sheet. The reaction heat of the rigid polyurethane foam 4 is arranged not to hinder the formation of foams of the rigid polyurethane foam insulation material 4 even near the reinforcing plate 3 since this construction reduces the heating value absorbed by the reinforcing plate 3 cut off by the rigid polyurethane foam insulation material 6. More specifically, this construction prevents the formation of low density and low compression polyurethane foam and provides a favorable outside view.
| JP4043159 | Electric refrigerator |
| JP3486175 | SEALING DEVICE FOR REFRIGERATOR |
| JPS58183489 | 【考案の名称】冷蔵庫の扉構造 |
MURONO YOSHIRO
NAKADA JUNICHI
SHIMABARA KAZUO
KOTORII TOSHIO
OHASHI NOBUO
MATSUMOTO TAKUYA
OBATA SHINGO
MORIKIYO KAZUHIRO
