Abstract: An electric sauna heater comprising at least one electric resistor (10) for heating the sauna room and a steamer (1 to 9) for generating steam in the sauna room, the steamer comprising an evaporating space (4) and at least one electric resistor (9) for evaporating the water contained in the evaporating space (4). To achieve efficient evaporation without applying high capacities at the evaporating resistor, the sauna heater comprises a thermostat (5) which disconnects power from the water evaporating resistor (9) when opening the supply of water to the evaporating space (4) and connects power to the evaporating resistor (9) when closing the supply of water to the evaporating space (4).

Abstract: This invention relates to an electric sauna heater comprising one or more heating resistors (1, 2) and means (3, 4) such as a time switch (3) for controlling the supply of electric power to the heating resistors, the time switch (3) comprising at least three inputs (A, B, C) the first (A) of which is connected to a first time switch contact 3A), the second (B) to a second time switch contact (3B) and the third (C) to a first terminal in a driving motor (M) for the time switch while a second terminal is connected to a counter contact (b) in the second contact (3B). In the invention, in order that the time switch could therefore be connected to two different operating voltages, a resistor (R) is connected between the third input (C) of the time switch (3) and a counter contact (a) in the first contact (3A).

Abstract: The invention relates to a method of controlling the supply of electric power to an electric sauna heater, the sauna heater being divided into two portions to be heated separately: a stone space (1) and an air duct (2) each being provided with one or more heating elements (1A1-1A3, 1B1-1B3, 2A1-2A3, 2B1-2B3) to heat the heat-storing material placed in the stone space (1) and the air contained in the sauna room, respectively. In the invention, to achieve good operating properties in this kind of sauna heater both with respect to the heating of the stone space and the air space of the sauna room without increasing the rated wattage of the sauna heater to an unreasonably high value, one or some of the heating elements are disconnected or connected to operate at partial power, whereby the power demand of the sauna heater is always smaller than the total power of the heating elements (1A1-1A3, 1B1-1B3, 2A1-2A 3, 2B1-2B3).

Abstract: An electric sauna heater comprising an outer casing surrounding a stone space containing heat-storing material, and at least one electric resistor provided in the stone space for heating the heat-storing material. In order to provide an electric sauna heater in which the required preheating time, the energy consumption, and the steam generating properties are advantageous, the outer casing is thermally insulated and surrounds the stone space substantially tightly at least on the sides and at the top. Electric power supply to the electric resistor(s) is effected in dependance of the temperature in the stone space so that by forming air flow connection between the stone space and the room where the sauna heater is positioned the room can, when desired, be warmed up ready for a sauna bath.