Air duct assembly, air conditioner indoor unit and air conditioner

The utility model belongs to the technical field of household appliances, and particularly relates to an air duct assembly, an air conditioner indoor unit and an air conditioner. The utility model aims to solve the problem of easy extrusion deformation during assembly of a vortex tongue and an air duct framework in the prior art. The air duct assembly comprises a vortex tongue and an air duct framework, and an elastic clamping piece is arranged between the vortex tongue and the air duct framework; the clamping piece comprises a clamping part and a clamping matching part, the clamping part is arranged on one of the vortex tongue and the air duct framework, and the clamping matching part is arranged on the other one of the vortex tongue and the air duct framework; the vortex tongue and the air duct framework are elastically connected through a clamping piece. The vortex tongue and the air duct framework are elastically connected, the problem that when equipment is in a high-temperature or low-temperature state,