| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily and surely prevent foam leakage in a heat insulating wall deriving portion of a drain pipe for discharging drain water which is generated by defrosting a cooler. <P>SOLUTION: A drain pipe 32 is formed of rubber and two annular protruding portions 38 and 39 are vertically integrally formed around the intermediate portion thereof. In an outer box 3 to which the drain pipe 32 is derived, a tubular insertion portion 37 is integrally formed and an interval between the upper and lower two protruding portions 38 and 39 of the drain pipe 32 is set smaller than a height dimension of the insertion portion 37, so that upper and lower ends of the insertion portion 37 are elastically held between the upper and lower two protruding portions 38 and 39 prior to the charging of a heat insulator between an inner box 2 and the outer box 3. Furthermore, the lower protruding portion 39 of the drain pipe 32 has a tapered shape of which the diameter becomes larger from a lower part to an upper part, and at a lower end of the insertion portion 37, a lock portion 37A is formed which is locked on an upper surface of the lower protruding portion 39. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
