US 2014/0273799 A1 · AIR DELIVERY SYSTEM HAVING ADJUSTABLE FLAME-BLOCKING FILTERS

Abstract

An air delivery system is configured to deliver air to an enclosed structure and may include at least one air channel configured to deliver air to or receive air from the enclosed structure, at least one component disposed within the at least one air channel, and at least one flame-blocking filter removably and adjustably secured within the at least one air channel. The at least one flame-blocking filter is configured to isolate the at least one component from a source of excessive temperature or flames. The at least one flame-blocking filter is configured to allow air to pass therethrough under normal operating conditions, and to block air and flames from passing therethrough when exposed to the excessive temperature or the flames.

Claims19

Dependent claims

A flame-blocking filter configured to be used with an air delivery system, the flame-blocking filter comprising:

an outer frame configured to be removably and adjustably inserted into at least one channel of the air delivery system, the outer frame defining an air opening such that air flows through the air opening during normal operation of the air delivery system;
and
an intumescent filter member secured to the outer frame, the intumescent filter member having beams crossing the air opening in at least one direction, the beams spaced apart to provide a plurality of air passages configured to allow air to flow therethrough during the normal operation of the air delivery system,
wherein the intumescent filter member has a first thickness when in an inactive non-heated state, wherein the intumescent material is configured to expand to a greater second thickness when in an active heated state, and wherein the intumescent material closes the plurality of air passages when in the active heated state.

1 more element

An air delivery system configured to deliver air to an enclosed structure, the air delivery system comprising:

at least one air channel configured to deliver air to or receive air from the enclosed structure;
at least one component disposed within the at least one air channel;
and
at least one flame-blocking filter removably and adjustably secured within the at least one air channel, wherein the at least one flame-blocking filter is configured to isolate the at least one component from a source of excessive temperature or flames, wherein the at least one flame-blocking filter is configured to allow air to pass therethrough under normal operating conditions, and wherein the at least one flame-blocking filter is configured to block air and flames from passing therethrough when exposed to the excessive temperature or the flames.

1 more element

Dependencies are inferred from the claim text.

Air delivery system having adjustable flame-blocking filters

Life of this patent

Air delivery system having adjustable flame-blocking filters

Life of this patent

Abstract

Claims19