The present invention relates to a fire extinguisher comprising a container with halogen hydro-carbons as ex¬ tinguishing means and adapted in such a way that the gas generated by heating over the boiling-point is released from the container at a predetermined temperature.

From DE-OS 2.246.614 such an extinguisher is known which is under no pressure when normally stored, with halogen hydro-carbons included in capsules of a thin, gastight material. The capsules which also include a foaming agent and water are placed in a container hung in the room which is to be protected against fire. When the heat developped by a fire reaches the container, this is completely or partly destroyed and the capsules fall on the floor. Due to the pressure developped in the cap¬ sules by heating over the boiling-point of the halogen hydro-carbons and/or because the capsules melt in the heat from the fire, the capsules open and the contents are released. According to the said specification the boiling-point is over 20 C, preferably 40 C.

According to the present invention it is suggested that the container is adapted to open by an inner over¬ pressure and that the halogen hydro-carbons which are poured directly into the container as solid or liquid are chosen so that the boiling-point is equal to the above predetermined temperature.

By the above embodiment the extinguisher - the halogen hydro-carbons - functions also as a thermostat and a means for opening the container. When the prede¬ termined temperature and consequently the boiling-point

of the halogen hydro-carbons is achieved due to the heat from a fire, the pressure in the container will rise as a consequence of the developped gas. The container will then open and the gas will fill the surrounding room and suffocate the fire in the well-known way by preventing the supply of oxygen.

OMPI