US 1952269 A
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Description (OCR text may contain errors)
March 27, 1934. H G, LUNDQUlsT 1,952,269
AIR WASHING DEVICE Filed Jan. 18, 1935 y FMA Lm PafeniedMsr. '21, 1934 UNITED STATESl PATENT OFFICE i AIR WASHING DEVICE Hans G. Lundquist, Chicago, Ill., assignor of onehalf to Louis Kohn, Chicago, Ill.
Application January 18, 1933, Serial No. 652,260 s claims. (01.261-91) My invention relates to an improvement in devices for humidifying air, washing or cooling and the like. One object is the provision of such a device which shall be simple to manufacture and simple and efcient in use. Another object is the provision, in such a device, of means for maintaining a spray or distribution of water particles independent of variations in the .level of the-water supply. Another object is 'm the provision of improved means for subjecting a current of air to the humidifying and washing and cooling effect of a spray of water. An-
other object is the provision of such a device in n which means are provided for heating the water. Another object is the provision of an improved housing assembly for such a device. Other objects will appear from time to time in the course of the specification and claims.
I illustrate my invention in the accompanying drawing the gure of which is a vertical section, with parts in elevation.
Like parts are indicated by like symbols throughout the specification and drawing. Referring to the drawing, A generally indicates Z5 any suitable outer housing, herein shown as generally cylindrical in shape, and with a flat bottom A1. It is understood, however, that variations in form may be made without departing from the spirit of my invention. A removable cover A2 is provided which is herein shown as in cluding a central portion closed with mesh A3 and a surrounding portion A4 provided with a plurality of air outlet apertures A5. A5 are any suitable supports, herein shown as casters, for supporting the device and, inthis instance, for permitting its ready movement about a room. A7 indicates any suitable handles whereby such movement may be obtained.
Positioned preferably concentrically within the cylindrical housing A is an inner cylindrical partition member generally indicated as B. It is shown as extending upwardly a suilicient distance pratically to contact or closely to approach the cover A2, -as at B1. In the present form of the device this contacting zone B1 is at the separation between the mesh A3 and the perforated portion A4 surrounding the mesh. Any suitable means may be employed for spacing and supportw ing the member B from the member A as for example studs B2 and the space between the two members may further be closed by one or more screens or lters B3 which may be removably supported in the space between the members A and B. The member B preferably terminates,
'the interior of the cylindrical member B,`to
as at B4 somewhat above the normal maximum upper level of the body of water B5.
C indicates a motor, preferably an induction motor, positioned within the member B preferably concentric with the axis thereof. Any 9 suitable means may be employed for supporting said motor, for example arms C1 shown adjustable for length as at C2. C3 indicates any suitable motor shaft upon which is mounted in` any suitame fashion the fan hub c4 with the 55 fan members C5, whereby, in response to rotation of the motor, air is drawn downwardly through the mesh A3 and downwardly through ward the surface of the water. As escape is possible about the lower edge of the cylinder B, the air, following the path indicated by the arrows, flows upwardly through the space between the members A and B and through the air filter members B3 and out the discharge holes A5. 5
(C10 indicates any suitable conductive line whereby the motor C may be put in connection with a lcommercial source of electricity. The line C10 may pass through the housings A and B, through any suitable insulating inlets C11. It is provided with an external control switch C12.
In order to provide a spray for washing and cooling the air as it passes downwardly through the cylinder B, I employ a supplemental shaft D, herein shown as a square shaft flexibly coupled as at D1 to the extension D2 downwardly from the fan. Its lower end rotates in any suitable bearing sleeve D3 mounted on the bracket D'1 depending downwardly from the lower edge of the member B. Slidable along the square shaft D is the conic float member D5, which is constrained to rotation with the shaft Dand in unison with the motor shaft. The member D5 is of such weight that it floats on the water B5 penetrating somewhat beneath the surface, as shown in the drawing but including a portion above the surface. Spaced outwardlyfrom the conic surface is the conic sleeve D5 which also rotates in unison with the cone D5, the lower edge of which penetrates below the surface of the water. It is preferably so spaced outwardly from the conic face of the member D5 as to leave a relatively thin conic aperture between the two members which terminates in the circumferential discharge outlet D". It will be understood that rapid rotation of the member D5 causes a centrifugal feed `of water upwardly and outwardly through the space between the members D5 and D5, for discharge from the discharge aperture D". In practice I find that this spray may be made coarse or fine,
depending on the spacing between the members D5 and D5. I prefer a fairly finespray .through which the air may pass.
It will be realized that whereas I have described and shown a practical and operative device, nevertheless many changes might be `made in the size, shape, number and disposition of parts without departing from the spirit of my invention. I therefore wish my description and drawing to be taken as in a broad sense illustrative and diagrammatic rather than as limiting me to my specic showing. The use and operation of my invention are as follows:
In the main I provide a central downward flowing current of air which penetrates the device through the mesh A3. It is drawn down by the fan blades C5 and is delivered through the spray discharged from the orifice D". It then passes over the rather extensive exposed surface of the water B5, passes between this water and the lower edge of the member B, and then upwardly through the space between the members A and B, for its final discharge as clean, filtered, humidied, cooled air.
Ready access may be had to the interior of the device by merely lifting the lid A2. This permits attention to the motor or fan, cleaning of the interior of the device and the addition of water when needed. I may, if desired, employ resistance elements E for heating the Water B5.
It is "highly advantageous to employ a iioat D5 as the spraying element, as inevitably, with the use of the water B5, the top level of the water will vary, droppingprogressively during use until a new supply is added, and then of course abruptly rising at the time that the supply is added. The member D5 automatically compensates for changes in level, and the outer shell D6, which picks up the water, is automatically positioned at the proper level in relation to the top of the water. The space between the members D5 and D may be about a 64th of an inch or less.
LIn an air conditioning device, a housing adapted to contain a body of water, air inlet and outlet means for said housing, means for constraining the air passing through said housing and said inlet and outlet means to iiow adjacent the upper surface of said water, a motor, a shaft adapted for rotation by said motor, a float element on said shaft held against rotation in relation to said shaft but adapted for axial movement along said shaft, said float being adapted to float in said water, said iioat being in the form of an inverted cone, and centrifugal water discharge means associated with said float, including a conic sleeve outwardly spaced from said cone the lower' inner edge of said sleeve being below water'level.
2. In an air conditioning apparatus, a housing adapted to contain a body of water, air inlet and outlet means for said housing, means for constraining air passing through said housing and inlet and outlet means to flow adjacent to the surface of said body of water, a motor, a shaft mounted for rotation by the motor, and a buoy--l substantially vertical shaft extending beneath the surface of the water, a buoyant inverted-cone sprayer having a central bore through which said shaft passes, said cone being rotatable with the shaft and slidable thereon in accordance with variations in the level of the liquid, said sprayer when rotated directing a spray of water upon the lower portion of said second housing, and means for creating a flow of air downwardly through the second housing, through said spray and thence upwardly between the two housings. i
HANS G. LUNDQUIST.
ottimismo ofi otmgscriou.v
than No. 1,952,269.
March 27, i934.,
HANS G. lLUNDQUlS'i.
lt is hereby certified that the name of the assignee of one-halt interest in the above numbered patent was erroneously described and specified as "Louis Kohn" whereas said name should have been described and specified as Louis Kahn,
as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office. y
Signed and sealed this 29th day of May, A. D. 1934.
(Scali Bryan M. Battey Acting Commissioner of Patents.