Abstract: An entertainment system (1019, 2) having a fluid system with a smoke generator (1007, 4), the smoke generator being supplied from at least one pump (1005, 8, 10) connected to at least one container for fluid (1003, 12, 14), which at least one pump (1005, 8, 10) is controlled by a controller (1009, 6), wherein the controller is adapted to perform a shutdown process upon malfunctioning of at least a part of the entertainment system. The shutdown process performs a purge of at least part of the fluid system. Furthermore, a method of operating the entertainment system (1001, 2), has the steps of performing a shutdown process upon malfunctioning of at least a part of the entertainment system, the shutdown process including the step of purging (2009, 3003a, 3003b) at least a part of said fluid system.

Abstract: The present invention relates to a method and an apparatus for forming fog by using at least one air stream connected to a tank where the air stream forms homogeneous droplets of a fluid, which droplets flow further in the air stream towards and through at least one outlet for forming a fog. The scope of the invention is to achieve a highly effective method and apparatus for generating fog with a long stand time having a small energy consumption. This can be achieved by a method and an apparatus as described in the beginning if the method further includes a first high pressure air stream that is lead to flow in a partly parallel direction to a liquid surface for forming at least one liquid sheet, which sheet brakes into droplets where a second air stream having a lower pressure transports the droplets through at least one outlet. Hereby, it is achieved that the liquid sheet moves forward continuously as it breaks up at the edges all the way around.

Abstract: An entertainment system (1019, 2) having a fluid system with a smoke generator (1007, 4), the smoke generator being supplied from at least one pump (1005, 8, 10) connected to at least one container for fluid (1003, 12, 14), which at least one pump (1005, 8, 10) is controlled by a controller (1009, 6), wherein the controller is adapted to perform a shutdown process upon malfunctioning of at least a part of the entertainment system. The shutdown process performs a purge of at least part of the fluid system. Furthermore, a method of operating the entertainment system (1001, 2), has the steps of performing a shutdown process upon malfunctioning of at least a part of the entertainment system, the shutdown process including the step of purging (2009, 3003a, 3003b) at least a part of said fluid system.

Abstract: A system and a method for operating an intruder deterrent system by which a smoke screen is generated in response to an intruder being detected, a smoke screen generator operatively linked to the intruder detecting. To achieve an intruder deterrent system that can operate for a longer period after interruption in the power supply, latent heat is stored in a heat storage, and smoke can be generated by transferring the latent heat from the heat storage to a liquid, which liquid is evaporated. The use of the heat storage has led to the unexpected result that the smoke generator can operate independently of power to the heating elements for a very long period.

Abstract: A system and a method for operating an intruder deterrent system by which a smoke screen is generated in response to an intruder being detected, a smoke screen generator operatively linked to the intruder detecting. To achieve an intruder deterrent system that can operate for a longer period after interruption in the power supply, latent heat is stored in a heat storage, and smoke can be generated by transferring the latent heat from the heat storage to a liquid, which liquid is evaporated. The use of the heat storage has led to the unexpected result that the smoke generator can operate independently of power to the heating elements for a very long period.

Abstract: The present invention relates to a method and an apparatus for forming fog by using at least one air stream connected to a tank where the air stream forms homogeneous droplets of a fluid, which droplets flow further in the air stream towards and through at least one outlet for forming a fog. The scope of the invention is to achieve a highly effective method and apparatus for generating fog with a long stand time having a small energy consumption. This can be achieved by a method and an apparatus as described in the beginning if the method further includes a first high pressure air stream that is lead to flow in a partly parallel direction to a liquid surface for forming at least one liquid sheet, which sheet brakes into droplets where a second air stream having a lower pressure transports the droplets through at least one outlet. Hereby, it is achieved that the liquid sheet moves forward continuously as it breaks up at the edges all the way around.