Overheating protection arrangement in an electric sauna unit

Claim 1

An electric sauna unit comprising: a casing adapted to be mounted adjacent a wall in a sauna space and defining an air passage having a generally vertical extension and communicating with the ambient atmosphere via the open bottom and top of the casing through which air flows during normal operation, at least one electric heating element located in said air passage, a thermostatic switch for controlling the current supply to the heating element, an opening formed in an upper part of the casing and adapted so that during normal operation of the unit it allows a flow of cool air through said opening from the outside of the casing to the air passage, whereas if the air passage is obstructed the flow of heated air will leave the air passage through said opening, and a sensing element operatively connected to the thermostatic switch being located in the said opening in order to sense the temperature of the air flow passing through said opening and adapted to actuate the thermostatic switch for interrupting the current supply to the heating element when the temperature at the opening reaches a predetermined value.