Refrigerator, duct assembly and duct fixture

A duct fixture, for fixing an end of a duct to a target mounting surface, the target mounting surface being provided with a mounting hole, the duct fixture comprising:

• a fixing seat in which is formed with a through hole communicated with the end of the duct, the through hole having a central axis;
• a fixing disk formed as an end face of the fixing seat;
• a limiting block provided on a side of the fixing disk facing the target mounting surface and shaped to match the mounting hole;
• wherein a limiting groove operably rotating to receive the target mounting surface is formed between the limiting block and the fixing disk;
• wherein the duct fixture further comprising a positioning protrusion disposed on the fixing disk, the positioning protrusion is disposed angularly with the limiting block around the central axis and is disposed to be spaced away from the limiting block so that when the limiting block is in an aligned position relative to the mounting hole, the limiting block enters the mounting hole axially, the positioning protrusion stays away from the mounting hole, the limiting block and the positioning protrusion are located on two opposite sides of the target mounting surface respectively, and when the limiting block moves around the central axis relative to the mounting hole from the aligned position to a staggered position, the positioning protrusion enters and snap fits in the mounting hole to limit further rotation of the duct fixture and limit rotation reversely of the duct fixture.