US3005397A - Outlet unit for ventilating plants - Google Patents

Description

1961 s. H. KRISTIANSEN 3,005,397

OUTLET UNIT FOR VENTILATING PLANTS Filed Nov. 14. 1957 9 1 I l. I

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,0 0UTLET"'UNIT;'FOR VENTILATING PLANTS Svend Helge Kristiansen, "Naestved, .Denma'rk, assignor, lay-*mes'ne -assignments; to :Hi-Press Air Conditioning of Ame'rica, Inc., New' York,-N .Y.

1 FiledNov; 14, 1957, Ser. No. 696,490 .;2- Claims. (Cl. 98-:40)

n ited States atent tion, and though the relatively largeamount of sucked in room air and the thorough mixing of secondary and primary air intheunitiitself prevent excessive local-velocities it will, nevertheless, be important that the, stream of air discharged from the outletmay be'directed in the desired way in relation .tocthe. walls of the room. Normallythis will :not causeanydilficultyin comparatively large rooms in buildings, :whereas it may .provedifiicult to secure satisfactory tcirculationin. small .or irregularly shaped spaces, particularlyzinmeanslof .transportation, for instancesin ships cabins, when standard types of units are employed. Finally, it may in-certain cases-bedesirable to have different: patterns :of-.circulation the: same room at. different times.

With a view to attaining the aforementioned object this invention provides an outlet device of the type described, consisting of two parts which are rotatably interconnected, the one part, to which the fresh air supply is connected, containing regulating devices for the air supply, whereas the other part is divided by a transverse partition with nozzle orifices into a plenum chamber into which the air enters from the first part, and an induction chamber provided with room air inlets in one or more side walls and outlet openings for the mixture of room air and supply air in the end wall opposite to the partition.

This outlet design makes it possible to lead the mixture of room air and supply air in any desired direction without the necessity of altering the position of more than one part of the outlet unit, and without interfering with the supply air connections, whereby the necessity of having movable supply air connections with the consequent risk of leakages is obviated. Thus, it will be possible, through the use of prefabricated standard parts, to secure the desired pattern of circulation under any kind of installation conditions by the proper adjustment of the part of the unit which contains the induction chamber and outlet openings for the discharged air. I

With a special view to marine applications the stationary part of the unit may appropriately be made in the shape of a flat, prismatic box, dimensioned for location between deck beams below the ceiling of cabins, the other part of the unit, which is rotatably attached to the under surface of the box, being free to move in a horizontal plane immediately below the lower edge of the deck beams.

The unit would thus occupy the least possible amount of useful space, and the circulationof air might be adjusted once and for all during the installation or at any time during the operation of the unit to flow in any desired direction by turning the swivelling part of the unit which moves freely under the ceiling. Incidentally, the embodiment may appropriately incorporate a fixed spider mounted axially in the opening of the stationary part communicating with the swivelling part, this spider being provided with a hub forming an axis of rotation for the movable part and fitted with operating controls for the air regulating mechanisms projecting through the movable part.

Ratented Oct. 24, 1961 .Thisarrangement secures that the air-regulating devices always remain in place withoutvariation of the setting,

embodiment in which FIG. 1 gives a partiallyschematic, longitudinal section through an outlet unit according to theinvention, designed for marine application, and

- FIG. 2 is a section along line 11- 11 in FIG. 1.

As illustrated in the drawings, the outlet unit comprises -a first box-like enclosure 1 to be mounted in fixed position in a room which is to be ventilated and having separate hot-and cold air inlet ducts 3 and4 entering one'endxof .thea'.enclosure,.the top, opposite end, and side walls of the enclosure being closed. In order tocontrol the proportions of hot and cold air entering the enclosure 1 from the ducts 3 and 4, respectively, two valves 9 and 10, controlled by rotation of corresponding shafts 13 and 14 are mounted in theinner. ends of the inlet ducts, respecitively. Also, to reducemoise caused by the flow of .air

through the valves, a sound trap 5 composed, for example, of a transverse'row of adjacent vanes sloping alternately, upwardly and downwardly. from the center of the enclosure :may be included in the outlet unit;

Near: the opposite end i015 the. enclosure 1 an annular rimrfiiszmountedina correspondingcircular opening in thebottom surface of the enclosure and three spoke-like legs aifixed to.the converge. :upwardlyand inwardly therefrom to support a hub member 16 centrally of the opening, thus forming a spider. Another box-like enclosure 2 is mounted for rotation about the opening in the bottom surface of the enclosure 1 by a vertical shaft extending downwardly from the hub 16 and a cap member at the lower end of the shaft having an annular flange extending outwardly to support the lower wall of the enclosure 2. A circular opening in the top of the rotatable enclosure communicates with the opening in the fixed enclosure and an annular gasket surrounding these openings prevents leakage of air through this connection while permitting rotation of the enclosure 2 with respect to the fixed enclosure 1. Thus, in order to direct air to any particular area of a room the enclosure 2 can be turned, as by hand for example, to the required orientation.

A transverse partition 18 closes ofi the pivoted end of the enclosure 2 to divide the enclosure into a plenum chamber 20 receiving air at relatively high pressure and an induction chamber at the end opposite the pivoted mounting. A plurality of orifices in the partition 18, such as the vertical slots 19 shown in the drawings, direct primary air at relatively high velocity from the plenum chamber 20 into the induction chamber and toward outlet openings 7 at the opposite end of the enclosure. At the bottom wall of the induction chamber an inlet grille 8 permits air from the room to be drawn in by induction and mixed with the stream of primary air from the slots 19, the mixture of room air and primary air then being discharged through the outlet openings 7 at relatively low velocity.

In order to operate the valves 9 and 10 from a position Within the room a control knob 15, connected through a shaft within the hub 16 and through a conventional pivoted linkage, turns tw o adjust- ing shafts 13 and 14 which are linked to the valve shafts 11 and 12 through two connecting rods 17, respectively, only one of which is visible in FIG. 2.

The detailed design of these regulating mechanisms is of no consequence as far as the invention is concerned, and the supply of primary air may comprise hot air only or cold air only, depending on the design of the ventilating plant in question.

The stationary box 1 may contain heat exchange devices in the shape of heating or cooling coils, the regulating mechanisms of which may be arranged in a similar manner as the schematically illustrated operating controls 15.

What I claim is:

l. A ventilating system comprising a fixed enclosure arranged to receive air under pressure and having an opening in one wall, a second generally oblong enclosure having a corresponding opening in one side wall and adjacent to one end, said one side wall being located parallel and adjacent to said one wall of the fixed enclosure with the corresponding openings in alignment, support means between the fixed enclosure and the second enclosure for supporting the second enclosure for rotation relative to the fixed enclosure about an axis perpendicular to the two openings so that the second enclosure communicates with the fixed enclosure through the two openings, outlet means at the other end of the second enclosure to direct air received from the first enclosure away from the axis of rotation, a transverse partition in the second enclosure dividing this enclosure into a plenum chamber communicating with the fixed enclosure and an induction chamber communicating with the outlet means and having a plurality of orifices to direct air from the plenum chamber toward the outlet means, and a grille in one side of the induction chamber to permit air to be drawn in from outside the second enclosure by induction.

2. A ventilating system comprising a fixed enclosure arranged to receive both hot and cold air under pressure and having an opening in one wall, valve means for controlling the amounts of hot and cold air entering the enclosure, a sound trap positioned within the fixed enclosure between the valve means and the opening, a second generally oblong enclosure having a corresponding opening in one side wall and adjacent to one end, said one side wall being located parallel and adjacent to said one wall of the fixed enclosure with the corresponding openings in alignment, support means between the fixed enclosure and the second enclosure for supporting the second enclosure for rotation relative to the'fixed enclosure about an axis perpendicular to the two openings so that the second enclosure communicates with the fixed enclosure through the two openings, outlet means at the other end of the second enclosure to direct air received from the first enclosure away from the axis of rotation, a transverse partition in the second enclosure dividing this enclosure into a plenum chamber communicating with the fixed enclosure and an induction chamber communicating with the outlet means and having a plurality of orifices to direct air from the plenum chamber toward the outlet means, and a grille in one side of the induction chamber to permit air to be drawn in from outside the second enclosure by induction.

References Cited in the file of this patent UNITED STATES PATENTS 1,783,005 Stewart Nov. 25, 1930 2,644,389 Dauphinee July 7, 1953 2,724,320 Tutt Nov. 22, 1955 2,737,875 Kurth et al Mar. 15, 1956 2,741,971 Wheeler Apr. 17, 1956 FOREIGN PATENTS p 267,656 Great Britain Mar. 24, 1957

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