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Publication numberUS2141330 A
Publication typeGrant
Publication dateDec 27, 1938
Filing dateMar 15, 1937
Priority dateMar 15, 1937
Publication numberUS 2141330 A, US 2141330A, US-A-2141330, US2141330 A, US2141330A
InventorsAbbot Charles Greeley
Original AssigneeAbbot Charles Greeley
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Solar distilling apparatus
US 2141330 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Dec. 27, 1938. c. G. ABBOT SOLAR DISTILLING APPARATUS Filed March 15, 1937 Patented Dec. 27, 1938 a UNITED STATES PATENT OFFIC I SOLARQ ms'rrnunc APPARATUS, Charles Greeley abbot, Washington, no. application March 115, 1931, SerlalNo. 131,050 a V 5 Claims." minor -18o)- My invention is designed primarily to distill water for drinking or storage battery purposes; in regions where muchfsunlight is available, and water is apt to be charged with undesirable chemicals. The-device may, however, be used to distill other liquids.

My device is illustrated in the accompanying drawing, wherein corresponding parts are designated by corresponding numerals.

Figure 1 shows a side elevation of the device, partly diagrammatic.

Figure 2 shows an elevation looking from -the left of Figure 1, also partly diagrammatic.

Figure 3 shows, looking from the left of Figure l, a cross-section of portions of the ray-absorptive tube and its transparent vacuum-containing sheath, on an enlarged scale as-compared to Figures 1 and 2.

Figure 4 shows diagrammatically the driving mechanism of the ray-collector.

To fix ideas, liquid to be distilled is introduced into container I9, and into its inclined snout which encloses the condenser tube I8. Thus the liquid to be distilled is slightly preheated atthe same time that it causes the vapor in tube I8 to condense. The slightly preheated liquid flows through tube l1 into the heating tube I3, in which the liquid is heated and vaporized by heat transmitted thereto by radiant energy from the sun concentrated by the mirror 8. The flow of the liquid through tubes I1 and I3 is automatically at such a rate as to replace liquid evaporated in tube I3 from the liquid surface at the level of the liquid in container I9.

The vapor of the liquid passes through" tube I8, and is condensed by the contact of the surrounding liquid contained in the inclined snout attached to container I9. The condensate falls into the receiving vessel 2|. A vacuum between the walls of tube I4 serves to hinder loss of heat from tube I3 by convection.

With this general explanation in mind I proceed to particulars.

Referring to Figures 1, 2, and 4: Roller bearings 3, 4, 5, are afiixed to supports I, 2. On these rest hollow trunnions,!i, I, affixed to a concave parabolic cylindric mirror, 8. The trunnions, 6, I, and the roller bearings 3, 4, 5, are so placed that the focal line of the mirror, 8, lies centrally within the trunnions 8, .1, and the mirror, 8, is

free to rotate about its focal line, as about an axis parallel to the axis of the earth. A .wheel, 9, with two grooves in its periphery, is aflixed to the lower trunnion, 6, with some freedom of angular adjustment by means of tangent screws -for distillation. .directly into the tube I8, but into a box, 22, so

'Ihesebear on a projecting mg, 20,-

clamped upon the trunnion, I. A train ofclockwork, indicated diagrammatically in- Figure '4',

restrains the rotation which the weight, I2, tends to impart, so that the mirror rotates along .with the apparent daily angular motion-of the sun in the heavens at15 per hour. After a days run,

' the barrel of the clockwork may be rewound, thus setting the mirror back to its morning position. I am accustomed to make the mirror of aluminum products, employing a sheet of a highly refiecting commercial product. Said sheet may be fastened down with metallic straps to a cradle of parabolic cylindric curvature, said cradle being made up of duralumin. But I do not restrict myself to mirrors of this construction.

I prefer to use in the focus of the mirror, 8, a metal tube, I3, preferably of copper, blackened with lampblack or some other ray-absorptivecoating. The tube I3 is surrounded all through the mirror, 8, by a transparent plurally-walled tube, M, containing a high vacuum between its walls. Easily separable joints, I5,.I6, connect the blackened tube, I3, to extension tubes I1, I8, leading, respectively, into and through the container, IS. The tube, I'l, may well be of rubber. The object of the joints I5, I6 is to enable the tube, I3, to be removed so as to clean out the deposit which is apt to collect within vessels used The tube, I3, does not deliver that spray of liquid undistilled may not enter the tube I8.

I prefer to make the container, I9, with an enlargement at the top, and capable of holding several gallons of liquid to be distilled and with a long tube-like continuation parallel to the tube,- I3, lying underneath the mirror, 8. Within this long continuation of the container, I9, the extension tube, I8, may be cooled sufliciently by the surrounding liquid to condense the vapor formed in the tube l3, and the condensate fall into the receptacle, 2 I At the lower end of the container I9, it joins the extension tube, I'I, so that liquid is supplied to the tube, I3, by gravity, just as fast as liquid leaves the tube, I3, by evaporation.

What I claim as my invention and desire to protect by Letters Patent is:

1. In a solar distilling apparatus, a vaporizer for a liquid to be distilled which includes a rayconcentrator for concentrating solarrays upon a linear focus and a ray-absorber-tube lying in said focus to receive concentrated solar rays from said ray-concentrator, said ray-concentrator and ray-absorber-tube being so mounted as to dispose axis, and means for rotating said concentrator about said linear focus as an axis, means for sup- .plying liquid to said vaporizer including a container for the liquid'and means of communication between, said container and the lower end of said ray-absorber-tube, a condensing means in heat interchangingrelation with liquid in 1 said supplying means for condensing vapor from 10 i said ray absorber-tube, means of communication between the upper end of said ray-absorber-tube' 2,141,880 I their axes approximately parallel to the earths tween the-outlet of said ray-absorber-tubeand .the inlet to said condensing means whereby liquid is prevented from being driven over from said ray-absorber-tube into said condensing v means, whereby only vapor formed in said rayabsorber-tube may rise into said condensing means to be condensed therein, said supplying and said condensing means and extending above the level of the liquid in said container and said ray-absorber-tube whereby only vapor formed in said ray-absorber-tube may rise into said condensing means to be condensed therein, said supplying and condensing means including a portion extending adjacent to and in compact relation with said ray-concentrator, and a receptacle for condensate in communication with concentrator, said ray-concentrator and 'rayabsorber-tube being so mounted'as to dispose their axes approximately parallel to the earths axis, and means for rotating said mirror about said linear focus as an axis, a container for liquid to be distilled having a downwardly projecting extension communicating with the lower end of said ray-absorber-tube, a tube in heat interchanging relation with the liquid in said container and extension for condensing vapor from said ray-absorber-tube, means of communication between the upper end of said ray-absorber-tube and said condenser tube and extending above the level of the liquid in said container and said rayabsorber-tube whereby only vapor formed in said ray-absorber-tube may rise into said condenser tube to be condensed therein, said container extension and its condenser tube extending adjacent to and in compact relation. with said ray-concentrator, and a receptacle for condensate in communication with the outletoi' said. condenser tube.

3. In a solar distilling apparatus, a vaporizer for a liquid to be distilled which includes a rayconcentrator for concentrating solar rays upon a linear focus and a ray-absorber-tube lying in said focus to receive concentrated solar rays from said ray-concentrator, said ray-concentrator and ray-absorber-tube being so mounted as to dispose their axes approximately parallel to the earths axis, and means for rotating said concentrator about said linear focus as an axis, means for supplying liquid to said vaporizer including a container for the liquid and means of communication between said container and the lowerend of said ray-absorber-tube, condensing means in heat interchanging relation with liquid in said supplying means for condensing vapor from said ray-absorbed-tube, means of communication between the upper end of said rayabsorber-tube and said condensing means and vextending above the level of the liquid in said container and said ray-absorber-tube, means besaid condenser tube.

and condensing means including a portion extending adjacent to and in compact relation with said ray-concentrator, compact unit, and a receptacle for condensate in communication with the outlet of said condenser tube.

' 4. In a solar distilling apparatus, a vaporizer for a liquid to be distilled which includes a rayconcentrator for concentrating solar 'ways upon a linear focus and a ray-absorber-tube lying in said focus to receive concentrated solar rays from said ray-concentrator, a transparent, vacuum.- containing heat-insulating tube surrounding said ray-absorber-tube, said ray-concentrator and ray-absorber-tube being so mounted as to dispose their axes approximately parallel to the earths axis, and 'means for rotating said concentrator about said linear focus as an axis, means for supplying liquid to said vaporizer including a container for the liquid and means of communication between said container and the lower end of said ray-absorber tube, condensing means in heat interchanging relation with liquid in said supplying means for condensing vapor from said ray-absorber-tube, means of communication between the upper end 01' said ray-absorber-tube and said condensing means and extending above the level of the liquid in said container and said ray-absorber-tube whereby only vapor formed in said ray-absorbertube may rise into said condensing means to be condensed therein, said supplying and condensing means including a portion extending adjacent to and in compact relation with said rayconcentrator, compact unit, and a receptacle for condensate in communication with the outlet of tube to receive solar rays, means for supplying liquid to said vaporizer including a container for the liquid and means of communication between said container and the lower end of said rayabsorber-tube, condensing means in heat interchanging relation with liquid in said supplying means for condensing vapor from said ray-absorber-tube, means of communication between the upper end of said ray-absorber-tube and said condensing means and extending above the level of the liquid in said container and said ray-absorber-tube whereby only vapor formed in said ray-absorber-tube may rise into said condensing means to be condensed therein, said supplying and condensing means including a portion ex- .tending adjacent to and in compact relation with said rap-concentrator, and a receptacle for condensate in communication with the outlet of said condenser tube.

CHARLES GREELEYJ" ABBOT.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
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US3300393 *Jul 25, 1962Jan 24, 1967Franklin G FisherSaline spray distillation within rotating solar heater
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Classifications
U.S. Classification202/180, 203/DIG.100, 126/714, 159/903, 203/DIG.170, 126/603, 126/692, 202/234
International ClassificationC02F1/14
Cooperative ClassificationY10S159/903, Y10S203/18, C02F1/14, Y10S203/01, Y02E10/47, F24J2/5413
European ClassificationC02F1/14, F24J2/54B6