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US 9,889,324 B2Granted
Fire protection device for small electrical devices
AssigneeJob Lizenz GmbH & Co. KG
InventorsBodo Müller, Jürgen Teschner, Rüdiger Klug
Life of this patent
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Abstract
A fire protection device for small electrical devices provided with a housing. The fire protection device includes a bursting capsule featuring a hollow space that is completely enclosed and delimited by a vessel wall, wherein a liquid is disposed in the hollow space. The liquid breaks the vessel wall at a predetermined trigger temperature due to thermal expansion thereby causing the bursting capsule to rupture. When the vessel wall ruptures and releases the liquid it has a fire preventing effect and/or a fire extinguishing effect.
Claims10
A small electrical appliance comprising:
- a housing in which electrical components are disposed;
- and
- a fire protection device disposed in the housing, wherein the fire protection device comprises a bursting capsule located within the interior of the housing;
- said bursting capsule featuring a hollow space that is completely enclosed and delimited by a vessel wall, and wherein a liquid is disposed in the hollow space, which
- a) breaks the vessel wall of the bursting capsule at a predetermined trigger temperature due to thermal expansion thereby causing the bursting capsule to rupture;
- wherein the liquid within the bursting capsule is released into the interior of the housing;
- and
- b) has a fire preventing effect and/or an extinguishing effect;
- and
- wherein the fire protection device further includes an electrical conductor routed between two contact points formed on the bursting capsule, which electrical conductor is connected between a voltage supply and the electrical components within the housing and the conductor conducts current to the electrical components;
- and wherein the electrical conductor is formed in such a way that the electrical conductor is automatically and inadvertently destroyed when the bursting capsule ruptures, thereby cutting power to the electrical components of the small electrical device located within the housing.
8 more elements
Dependencies are inferred from the claim text.