US2495619A - Dehumidifier - Google Patents

Description

atented Jan. 24, 1950 UNITED STATES TENT QFFICE DEHUMIDIFIER Herbert P. Weierman, Rydal, Pa. Application November 29, 1945, Serial No. 631,598

(Cl. 18S-4.4)

2 Claims.

This invention relates to dehumidiers and more particularly to apparatus for removing moisture from the air in a confined space such as a room.

It is the principal object of the present invention to provide a dehumidifier which is adapted for the rapid removal of air-borne moisture.

It is a further object of the present invention to provide a dehumidifier Which is portable in character so that the same may be employed in different locations as desired.

It is a further object of the present invention to provide a dehumidifier which will require a minimum of attention and which may be readily recharged as required by unskilled persons.

Other objects of the invention will be apparent from the specification and claims.

The nature and characteristic features of the invention will be more readily understood from the following description, taken in connection with the accompanying drawings forming part hereof, in which:

Figure 1 is a view in perspective of a preferred form of dehumidier in accordance with the present invention;

Figure 2 is a vertical central sectional view of the dehumidier shown in Figure l;

Figure 3 is a top plan view of the dehumidier; and

Figure 4 is a view in perspective of a removable container employed in connection with the dehumidifier.

It should, of course, be understood that the description and drawings herein are illustrative merely, and that various modiiications and f" chan-ges may be made in the structure disclosed without departing from the spirit of the invention.

Referring more particularly to the drawings, in which a preferred embodiment of the invention is illustrated, an outer cylindrical casing I is provided, preferably of light weight material such as wood, plywood, sheet metal or the like, which is supported in elevated position with respect to the floor by suitable legs I I. The casing I0 preferably has a removable cylindrical cover or top section I2 mounted thereon the side walls thereof extending upwardly in alignment with the side walls of the casing I0. The cover section I2 is preferably closed by a top Wall I3 which is provided with a central opening I4. An electric motor I5 is provided and is supported on a bracket I6 carried on the top Wall I3. The electric motor I5 has wires I'I connected thereto leading to a pronged plug I8 which is adapted to be plugged in on ordinary house current of volts. On the shaft I9 of the motor I5 a fan 26 is provided for drawing air downwardly through the opening I 4 and a screen 32 is mounted in the opening I4 to prevent the entrance of undesired material and for preventing injury to or by the fan 20.

The lower part of the casing Ill is closed by a bottom wall 2I having a central opening 22 from which a frusto-conical section 23, preferably of sheet metal extends upwardly and functions as a funnel, -as hereinafter explained.

Within the casing I0 a removable container 25 is provided, preferably made of wire or other foraminous material, such as screening. The container 25 preferably includes a central cylindrical portion 26 and an outer conical portion 21 connected to the cylindrical portion 26 at the bottom. The container 25 is preferably provided with suitable handles 28 for the removal of the same from the casing I 0 as desired. The container 25 is adapted to be supplied with hygroscopic material such as 'calcium chloride, which has the property of absorbing moisture from the atmosphere and forming a solution in the absorbed moisture. A bucket or other sultable container 3| is provided beneath the opening 22 for receiving the dissolved material.

The mode of operation will it is thought be apparent from the foregoing but it may be noted that moisture laden air drawn in by the fan 20 passes and is directed downwardly through the interior of the cylindrical screen portion 26 and in contact with the conical screen portion 27 so as to be brought into intimate relationship with the hygroscopic material in the container. The air of reduced moisture content passes downwardly through the cylindrical screen portion 26 and is discharged through the central opening 22 at the bottom. The moisture taken up and absorbed by the hygroscopic material causes the same to slowly dissolve and the liquid thus resulting passes downwardly through the container 25 and is directed by the funnel portion 23 into the container 3 I, for collection.

With the dehumidifier of the present invention the moisture content of a room and particularly a basement room or the like may be quickly and easily reduced and by intermittent or continuous operation as required injury toY wall coverings, game apparatus and the like in such a room is prevented. At the same time theroom ls made more comfortable for use.

I claim:

l. In a dehumidifier, a vertical enclosing casing having a lower section and a removable upper section, said upper section having an air inlet opening in the top wall thereof, a motor operated ian carried by said upper section for circulating air downwardly through said casing, the lower section at the lower part thereof having an interior inwardly inclined wall with a central discharge opening, supporting means for said casing for spacing said inclined wall upwardly for the reception of a receptacle below said discharge opening, and a removable container for hygroscopic material in said lower section supported by said inclined wall, said container having the walls thereof of foraminous material and having a central vertical oraminous material lined air passageway in communication with said openings, the outer wall of the upper portion of said container being spaced inwardly from the inner wall of said lower casing and the lower portion of said container converging inwardly towards the discharge opening.

2. In a dehumidifier, a vertical cylindrical enclosing casing having a lower section and a removable upper closure section, said upper section having an air inlet opening in the top wall theref of, a motor operated fan mounted on the top wall of said upper section for circulating air downwardly through said casing, the lower section at the lower part thereof having an interior in wardly inclined wall with a central discharge opening, supporting means for said casing for spacing said inclined wall upwardly for the reception of a receptacle below said discharge opening, and a removable container for hygroscopic material in said lower section supported by said inclined wall, said container having the walls thereof of foraminous material and having a central vertical foraminous material lined air passageway in communication with said openings, the outer -wall of the upper portion of said container being spaced inwardly from the inner wall of said lower casing and the lower portion of the outer wall of said container being frusto-conical and converging inwardly towards the bottom thereof.

HERBERT P. WEIERMAN.

' REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 913,325 Touzirnsky Feb. 23, 1909 985,966 Arnold Mar. '7, 1911 1,170,469 Van Calcar Feb. 1, 1916 2,114,761 Crider Apr. 19, 1938 2,279,326 Kaufman Apr. 14, 1942 2,294,183 Hohn-Hansen Aug. 25, 1942 2,362,933 Schaefer Nov. 14, 1944 FOREIGN PATENTS Number Country Date 374,919 France Apr. 19, 1907

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