Filter assembly

Abstract

An improved filter assembly (1) is disclosed, particularly for electric cabinets, comprising a filter cloth (5), a conveying sump (7) and a fan (9), equipped with at least one thermal-resistive sensor (11) placed next to at least one hole (13) obtained in the conveying sump (7).

Description

technical field [0001] The present invention relates to an improved filter assembly, particularly for electrical cabinets. Background technique [0002] In the prior art, for cooling electrical dashboards, air filtration systems are used equipped with fans (axial, radial, etc. types) adapted to force air through filter cloths adapted to filter the air. [0003] In this known system, the fan applied to the filter assembly must overcome the resistance to the air passing through the filter, which occurs due to load leakage, which increases the pressure that the fan must exceed, resulting in a performance deteriorates. [0004] In particular, when filter clogging increases, further flow decay cannot be calculated by the user and often falls (even faster in very dirty gases) to the minimum value that guarantees adequate cooling of the device placed in the electrical control box the following. [0005] In this case, one solution that has been adopted is to provide the box with ...

AI Technical Summary

Problems solved by technology

[0003] In this known system, the fan applied to the filter assembly must overcome the resistance to the air passing through the filter, which resistance occurs due to load leakage, which increases the pressure that the fan must exceed, resulting in poor performance of

[0004] In particular, when filter clogging increases, further flow decay cannot be calculated by the user and often falls (even faster in very dirty gases) to the minimum value that guarantees adequate cooling of the device placed in the electrical control box the following

[0005] In this case, one solution that has been adopted is to provide the box with a thermostat that is triggered when the limit temperature is reached, but this thermostat needs to measure the temperature at a single point, and as the flow decreases, the internal Ventilation (meaning the agitation of the air inside the electrical box) is correspondingly reduced, which can create dangerous and uncontrollable localized "hot spots"

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