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US 12,712,341 B2Granted
Exhaust of hot gases resulting from an arc event in an electric switchgear
AssigneeEaton Intelligent Power Limited
InventorsWim Lammers, Gerard Schoonenberg
Life of this patent
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Abstract
Some embodiments relate to an electric switchgear is disclosed, which comprises a switchgear with a switchgear housing and an exhaust channel, which passes through or connects to an opening in a housing wall of the switchgear housing. The exhaust channel comprises a narrowing and exhaust channel inlet holes, which are arranged at the narrowing and which are provided to supply fresh air from outside of the exhaust channel into the interior of the exhaust channel.
Claims13
An Electric-electric switchgear, comprising:
- a switchgear housing;
- a switching device arranged in the switchgear housing;
- an inner housing arranged within the switchgear housing and surrounding the switching device, wherein the inner housing is pneumatically connected to an exhaust channel,
- wherein the exhaust channel passes through or connects to an opening in a housing wall of the switchgear housing,
- wherein the exhaust channel comprises a narrowing and exhaust channel inlet holes, which are arranged at the narrowing and which are provided to supply air from outside of the inner housing into the interior of the exhaust channel, and
- wherein the electric switchgear is configured such that, in use, a main air flow through the exhaust channel caused by an arc event in the switchgear housing causes a local underpressure at the narrowing based on Bernoulli's principle and air to be sucked into the exhaust channel through the exhaust channel inlet holes and support the burn of unburned gases in the exhaust channel.
3 more elements
Dependencies are inferred from the claim text.