Ventilation – Means combined with window – With air pump
Patent
1996-10-30
1997-12-30
Joyce, Harold
Ventilation
Means combined with window
With air pump
454244, 454252, 165 54, F24F 7013
Patent
active
057022968
ABSTRACT:
A portable ventilation system includes a portable unit (1) comprising a fan (11) for sucking-in fresh air from the outdoor atmosphere and blowing the fresh air into a room, and an extraction fan (12) for sucking foul air from said room and blowing the foul air into the outdoor atmosphere. The system includes a flexible air conduit (13) having two mutually separate passageways (131, 132) which are arranged so as to obtain a transfer of heat between the passageways, through the medium of a wall of one passageway (132). One end of one passageway (131) is connectable to the input side of the fresh-air suction fan (11) and one end of the remaining passageway (132) is connectable to the output side of the foul-air extraction fan (12). Remaining ends of the passageways are intended to be placed in connection with the outdoor atmosphere. The two passageways (131, 132) of the flexible conduit (13) may be divided into a number of concentrical sub-passageways which are disposed so that each alternate sub-passageway is associated with one passageway (131) and each other alternate sub-passageway is associated with the remaining passageway (132). A distributed, counter-flow heat-exchanging effect is obtained in this way.
REFERENCES:
patent: 558714 (1896-04-01), Bradley
patent: 1800237 (1931-04-01), Williams
patent: 2091594 (1937-08-01), Innes
patent: 4905579 (1990-03-01), Dame
patent: 5000081 (1991-03-01), Gilmer
Grano Maleri & Dekor AB
Joyce Harold
LandOfFree
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