Server and vertical air outlet heat dissipation device thereof

The invention discloses a vertical air outlet heat dissipation device which comprises a main frame body, an air inlet pipeline arranged at the front end of the main frame body and used for being communicated with an air outlet of a server case, an air outlet pipeline arranged on the upper side of the rear end of the main frame body and communicated with the air inlet pipeline, and a transition pipeline arranged on the lower side of the rear end of the main frame body and communicated with the air outlet pipeline. The air outlet pipelines extend upwards in the vertical direction, the transition pipelines extend downwards in the vertical direction, and the transition pipelines are used for introducing air outlet airflow of the adjacent air outlet pipelines in the vertical direction. Thus, heat dissipation airflow flowing through the current server is introduced into the main frame body through the air inlet pipeline, and then the heat dissipation airflow is changed in flow direction and is discharged upwards in