US 927519 A
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'I'. I'RIEDLANDER` ozoNB GBNBRATog. PPLIUATIN FILED JULY 24. `190B.
Patented July 13, 1909.
H/tnassea /WMM ' -50 instance, a mica compound.
tubes are open at each end, vand the innerl UNITED sirAtrns vPATENT OFFICE.
'IHEODOItE FRIEILANDER, CHICAGO,v ILLINOIS. ASSIGNOR TO LOUIS GOLDBERG,-OF
To all whom it may concern. y -B-e' it 'known' that I, THEonoRE- FRIED- LANnER, a citizen .of the' United States of America, land a resident of Chicago, county of Cook, Sta-te of Illinois, have invented certain newand useful Improvements in lOzone- Generators, of which the following is aspeciv ication.
' The main object of this invention is to lprovide any improved vand elicient form of 'ozone generator which 1s simple and inex-H .pensive 1n construction.
This object is accomplished by the-device shown in thcpaccompanying drawings, in which:
4.Figure 1 is a top plan of an electric ozone generating apparatus 'constructed according to this invention; Fig. 2 is a side elevation of the same, partly sectional, the section being taken on the line 2--2 of Fig. 1; Figs. 3 and 4 .are details'of the upper spider for supporting the inner electrode; Figs. 5 and 6 are details of the' disk which supports the i flower end of the inner electrode; Fig. 7 is a sectional detail of. one of the traps at the outlets of the casing; Fig. S is an enlarged fragmentary sectiony illustrating the relation of the electrodes.
In the form shown in the drawings, the casing comprises a storage reservoir 1 and a generating chamber V3 lcommunicating theren with.
The chamber 3 contains the elec 'V trodes between `which the ozone is generated by silent-electricaldis'charge. The reservoir 1 is of considerably greater internal capacitythan the unoccupied air space in the chamber 3, and is'provided with one or more contracted discharge pipese,l each Ycontrolled by an individual pet-cock 5 and each com municatingwith a delivery'pipe 7 and anv interposed receptacle 6 containing y liquid through which t e ozone'is forced. The receptac'le 6 comprises a tube dipped down-'' Ward to provide a U-shaped part adapted to hold a liquid in 4such manner that the gas will pass through vtheliquid on its way to the Pipe 7- The ozone generator comprises a pair of lconcentrically arranged tubes 8 and 9,l each of dielectric or insulating .materiah as, for Both of these tube 9 is supported within the outer tube 8 by means of a spider 10 at the top and a disk 11 at the bottomwhich spider and disk are provided with lugs 12 so as to space the tube -Speeiication of Letters Patent. Application filedJuly 24, 1908. -Serial No. 445,147.
Patented Juiy 1e; 190e.
9 concentrically within'theftube S. Thev ach of thesev sitely charged, the electric circuit being coinpleted through the effi-uve or silent discharge of electricity between the electrodes. .The lcasing is preferably formed of nonvo'r conducting material, such as wood, with a" glass panel 15 at the top.' The part 3 of the casing vis irctangular and of such diameter as to loosely fit around the outer-tube S and its coil of wire. the form of a removable eover'l adapted to permit the tubes and the electrodes to be readily withdrawnfroin the casing for the purpose of examining o1' repairing the generl ating apparatus.
Oneside of the part 3 is in A tube r17 at the lend of the chamber .34
which is distant from the reservoir 1 connects with' a blower which supplies air to the appa-y ratus. The disk 11`is provided with a cen-l tral aperture 18 which is suitably propere tioned with respect to the air spacebetwcen the edges of the disk 11 and the tube 8 so as to direct a eertainjportion of the air from the tube 17 through the interior of the tube 9 while a certain other portion passes through the space between the tubes 8 and 9. passing through the tube Qwtends to cool said tube. The spider 10 .isrso formed as to permit thefree passage of theozone and air both n.
through and around the tube 9.
The coils of Wire which form'the two electrodes are wound upon the Vconcentric cylindrical'- tubes with their convolutions uni- The coils may therefore bev formly spaced. regarded as concentric cylindrical electrodes having spiral ridges on their contiguous Surfaces, and the ridges on one being substantially parallel with those on the other. This form of electrode is particularly adapted for the. purpose, since it is. the` silent, discharge The air i through the air between the electrdes which changes the oxygen (O2) to ozone (O3), and
such silent discharge takes place most readily at places where there are points or surfaces of sharp curvature on the electrodes.' The part o f eac-h electrode which facesthe other electrode is a ridge having a crest of sharp transverse curvature, and, 'as the ridges are parallel, the discharge takes place uniformly throughout the extent of the contiguous surfaces of the electrodes.
The electrodes are connectedwith a transform 1s. or Vother source of alternating current, as in icated in Fig. 1.
The operation of the device shown is as follows z-VVlien a high-tension alternating current is put in circuit with the electrodes 13 and 1:4, a silent discharge or "efiluve takes place through the material of the tube 8- and through the air space between Ythe electrodes, converting the oxygen in said space to ozone. On account of, the construcf tion of the electrodes, the field oi" discharge extends throughout the entire space between the two-electrodes. The air current from the blowercauses acontinuous flow of air through said iield of discharge. Other air passes unaltered through the tube 9 and 'serves to cool the inner tube and electrode. The proportion of air enteringfeach assageis determined by the relative area o the inlet 18 with respect to the transverse areaof the air pase sage between *the tubes 8 and 9. The dis'- charge of ozone from the reservoir 1 iscontrolled by the pet-cocks 5.
The specific construction of the casino' Iand' the arrangement and proportioning oli the generatingand storagechambers does not form a part of the invention claimed in this application, but is the invention of Louis Goldberg and forms the subject matter of his (zo-pending application executediof even date' herewith. l p
W'hat'I claim as my invention and' desire to secure by Letters Patent is,.-
1, An ozone generator, comprising a pair of concentricallyV arranged tubes .of insulating material, a pair of electrodes comprising coils otwire Wound on the respective tubes, said electrodes being spaced apart sufficiently to provide an air space 'betxveen them, means `for oppositely charging saidl electrodes, and means for causing air to flow through said airspace.
and through said inner tube.
3. An ozone generator; comprising a "aii ',ot concentrically arranged cylindrical e ectrodesspaced apart, one Within the other, Vto rovide an' air passage between them, each electrode having thereon a spiral ridge opposed to the other electrode, said ridges 'bcing parallel throughout, and means for eaus ing air .to How through said passage..
Signed'at Chicago this 22nd day of July THEODORE FRIEDLANDER. Witnesses:
EUGENE A. RUMMLER, MARY M. DILLMAN.