HOT GAS DEVICE FOR PROVIDING HOT GAS AND COATING DEVICE AND METHOD FOR COATING WORKPIECES

The invention relates to a hot gas device (10) for providing hot gas for a coating device (1) for coating workpieces (2) with a coating material (3)， in particular for coating narrow sides (4) of plate-shaped workpieces (2) with a narrow-surface coating material an energy source (11) for providing the hot gas and with at least one hot gas guide path (12) for feeding the hot gas to a deflection device (9)， wherein the deflection device (9) has at least one outlet opening (13) in order to activate a functional layer provided on the coating material (3) and / or on the workpiece (2) with the hot gas， a cooling device (14) being provided， by which at least the deflection device (9) and / or the workpiece (2) and / or the coating material (3) and / or the energy source (11) can be cooled， as well as a coating device (1) and a method for coating workpieces (2) with a coating material (3).