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An explosion relief device for an inverter

IP.com Disclosure Number: IPCOM000240686D
Publication Date: 2015-Feb-18
Document File: 2 page(s) / 168K

Publishing Venue

The IP.com Prior Art Database

Abstract

This document describes a device which can be used to prevent explosion damages in an enclosure, more precisely in a wall mounted inverter enclosure.

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1.Abstract

This document describes a device which can be used to prevent explosion damages in an enclosure, more precisely in a wall mounted inverter enclosure.


2.Background

Large inverters are known to have typically sheet metal explosion relief mechanisms, which in the case of explosion erupt from the enclosure wall and let the expanding gases to escape the enclosure without further damages to the structure of the enclosure. Also some applications are known to have rubber seals or plugs for the same purpose as mentioned before.


3.New solution

Instead of a metal structure, an elastomer plug is used as an explosion pressure vent. This kind of solution is cost effective and easy to assemble because the venting (pressure relief), weatherproof sealing and part fixing are all included on the same simple part.

In case of an explosion, the pressure inside the housing rises rapidly. Due to the pressure rise, the elastomer plug will blow off and the pressure is relieved safely, the housing cover will not blow off.

The aperture for the plug is located in a location such that the explosion gases are exhausted to a safe direction. Expansion gases can be directed eg. into a cooling channel which leads to the side of the enclosure or upwards. This way the gases will not endanger personnel or ignite any surrounding materials.

Elastomer plug dimensioning must be done carefully in view of the explosion pressure rise and size of the enclosure so that the plug is eff...