The cooking oven (2) includes a heatable oven chamber (6) having a loading port (8) that can be closed by an oven door (10) having outer and inner panes. Intermediate panes are positioned between the outer and inner panes such that the outer and inner cavities are formed in between. A cooling system moves a cooling air (K1) through the outer cavity, and keeps a thermally insulating air (I) in the inner cavity.
