Refrigerator i.e. household refrigerator, has interlocking pipe pieces arranged between annular hollow spaces, where pipe pieces do not have contact with each other and are fixed through insulating foam penetrated into hollow spaces

摘要

The refrigerator has a heat insulative housing designed with a foam-filled wall. A pressure compensation passage (9) extends through the wall. The passage includes two interlocking pipe pieces (10, 11), that are arranged between annular hollow spaces (20, 23, 24), where the pipe pieces form a labyrinth seal. The pipe pieces do not have contact with each other, and are fixed through insulating foam penetrated into the hollow spaces. One of the pipe pieces is fixed in an outer layer of the wall, and comprises inner and outer sleeves (13, 19).