Carbon dioxide gas inlet assembly

The utility model relates to the technical field of air inlet assemblies, in particular to a carbon dioxide air inlet assembly. The assembly comprises an assembly body, the assembly body comprises a gas inlet box, a gas mixing cavity with an opening in the upper portion is formed in the gas inlet box, and gas inlet holes are formed in any side wall of the gas mixing cavity; a blocking plate is arranged at the opening of the gas mixing cavity, and a gas outlet is formed in the blocking plate; the assembly body further comprises a guide pipeline with one end connected to the air outlet, the other end of the guide pipeline is connected with an axial flow fan, and the axial flow fan is used for sucking air in the space where the air inlet box is located into the air mixing cavity from any air inlet and conveying the air to the carbon oxide concentration detection position through the guide pipeline. By means of the structure, the air inlet box can suck air in multiple directions in the space where the air inlet b