Air flow controller

Details Air flow controller Air flow controller

1994-06-20

1995-09-05

Joyce, Harold

Ventilation

Having inlet airway

Including specific air distributor

454258, 454326, F24F 13072

Patent

active

054474710

DESCRIPTION:

BRIEF SUMMARY
This invention relates to an air flow controller, for use in air flow situations including inter alia forced air central heating, to control air passing through an air diffuser opening.
In the heating, ventillation and air conditioning sector of the building services industry, there is a requirement for an air flow controller having an adjustable air flow passageway.
Accordingly, the present invention is an air flow controller having an adjustable air flow capacity comprising a surface-mounted distribution frame housing one or more elongate passages, each passage having an inlet, a flow channel and an outlet, the inlet having two opposed guide means to control the flow of air passing into the flow channel, two opposed wall members defining the width of the channel, the wall members being adapted to be position-adjusted on control movement of the guide means with the outer ends of the wall members defining the outlet.
Preferably, the two opposed guide means for the or each passage are two elongate devices, each having a shaft, the pair of shafts each mounting a similar component having a planar control side, the shafts being counter-rotatable together to vary or close the opening therebetween. A seal is preferably provided between each shaft and the frame.
Preferably also, two or more elongate passages are provided, the pair of shafts of the guide means for each passage being inter-connected whereby on movement of one pair of shafts corresponding movement is made by the other pair(s) of shafts. Each component is preferably a flap tangentially mounted on the respective shaft.
Preferably further, corresponding wall members of the flow channel of the or each passage are hinged along the edge of the inner side of the respective flap. The wall members, near to their outer side, each preferably has a pin engaged in an arcuate slot in an end wall of the frame, the slots for each passage being divergent outwardly. The outer ends of the wall members are beneficially parallel if curved to extend beyond the front of the frame. For each guide means, the side of the hinged wall member is shaped and the inner side of the respective flap is preferably of complementary shape at its channel-defining face.
The frame is desirably of rectangular shape having a surrounding frame for surface-engagement with a reverse surround extension with provision for one or more passages therein.
The surround extension desirably has two end walls, two side walls with an intermediate longitudinal passage-dividing wall for each passage provided. Depending on the length of each-passage in the frame, one or more intermediate transverse support partitions may be provided.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a cross-sectional view of an air flow controller according to a first embodiment of the present invention, showing respectively the controller in a fully open position, with a semi-closed position being shown in broken line;
FIG. 2 is a plan view of one end of a diffuser frame having three passages according to a second embodiment;
FIG. 3 is a rear plan view of the other end of the diffuser frame having four passages according to a third embodiment;
FIG. 4 is a rear perspective view to a smaller scale of a diffuser frame having two passages according to a fourth embodiment;
FIG. 5 is a partial end view in the direction of arrow "A" on FIG. 3;
FIG. 6 is a side view of an end wall for a passage in a frame according to any one embodiment;
FIG. 7 is a cross-sectional view on an intermediate passage-dividing wall;
FIG. 8 is a cross-sectional view of a hinged joint between a flap and a wall member of each passage; and
FIG. 9 is a cross-sectional view of a room showing an air flow controller mounted in a ceiling thereof.
Referring to the drawings, an air flow controller has an adjustable air flow passageway in general comprises a surface-mounted distribution frame 10 housing one or more elongate passages 12. Each passage 12 has an inlet 14, a f

REFERENCES:
patent: 3308744 (1967-03-01), Schach
patent: 3327608 (1967-06-01), Newell et al.
patent: 3771559 (1973-11-01), Alley
patent: 3811369 (1974-05-01), Ruegg
patent: 3848799 (1974-11-01), Day
patent: 4316407 (1982-02-01), Lambert
patent: 5088388 (1992-02-01), Schaefer

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