US2163474A - Humidifier - Google Patents

Description

w. `H. sLoAN June 20, 1939.

HUMIDIFIER Fi1edJune 21, 1937 s sheets-sheet 2 @1km/11421154 l W. H. SLOAN June 20, 1939.

HUMIDIFIER 1937 3 Sheets-Sheet I5 Filed June 2l,

Patented June V20',` 1939 UNITED STATES 2,163ylfl4l PATENT oFFlc-E emissie,

Y l nurnnrrmn vWilliam Il. Sloan, jvashinltoll. D. C. Application June e1, 1937, serial No, 149,456 15 claims. (ci. 2614-90) The present invention relates Ato improvements in huimidifying apparatus designed particular y for use in textile and other large industrial plan', for supplying a sufcien't quantity of free mois- 5 ture required to condition 'the goods being manufactured or to Amaintain properly humidied atmosphere in the operating space of these marfufactories. This invention relates to and is an improve,- v ment upon that type of humidier disclosed in Patents 1,267,166, dated May 21, 1913,` and 1,544,418, dated June 30, 1925. i

I have found in the use of these prior humidiers in cotton mills, for example, that there is ll a great tendency for lint, floating in the air of the operation room, lto collect in the stationary member formed with the impact blades or grids and for large globules or drops of water to form onsaid blades. This results, in the operation of the apparatus, in continuous dislodgement of lint and watery deposits which drop upon the machinery and goods being manufactured, causing rust spots and serious damage to said goods. So great is this collection of deposits that. it is Vnecessary from time to time to clean the grid members of the various humidiilers at material` expense, to say nothing of lossdue to damage ofthe manufactured products. By careful study, the foregoing condition has been found to arise from eddying of the currents of air about the edge of the casing in which the grid and rotating disk are'disposed and the use o f the air of thel factory room fox` dissemination of the moisture under the operation of a fan. l

One of the primary objects of these improvements has been to overcome this disadvantage by employing, mainly, air from a separate or outside source that is free from floating particles of lint and filtering out lint from that portion of the air from the immediate space'containing the humidiiiers which may be employed as an adfjunct to the outsideair. A

To this end my inventionV embodies air conveying and filtering means in association with Another disadvantage of the'prior art humidiilersresides in the lack of elciency in -the'mechanical atomization of the water supplied'to lthe rotating disk and impacted uponthe grid 'elements, barely 20% of the amount being ""evapogated by said devices with resultant waste and expense of the water supply. Any ;ai'.t empt.

' tion' so as to oscillate the unit, enabling the spray dated May 5, 1931,

the humidifying instrumentalities, said latter bej correct this-deficiency by increasing the speedof thedisintegrating elements only results in wear,v vibration and noise and necessary increase in power with added maintenance costs. It is, therefore, a further object of these im- 5 provements to provide a greater degree of atomization of the water by providing a rotating grid or blade member operating. preferably reversely to the'rotation of thecentrifuging disk, thereby increasing the eifectiveness of the impact force 10 and at the same time preventingthe undesired collection-of the lint and drops of water on the grid member and assisting the iiow of air at lthe point where the eddying currents have heretofore occurred.

Another difliculty experiencedl with the prior art devices is lack of uniformity of distribution of the moisture-laden air d ue to the stationary character ofthe humidiiiers which also causes the spray of moisture toA be'thrown in one direction only, thereby resulting in a wetting down and heavy places in the cotton materials being manufactured.

I, therefore, have devised my present invenas well as the circulating air to be continuously blown in all directionsmore or.-less uniformly,

greatly increasing the amount of circulation and evaporation produced by each head or unit in a' system, such as illustrated in Patent 1,804,079

Among other features of importance in my invention which may be mentioned is the provision of means for impelling fresh @r clean air through the grid blades and about the rotating disk, for uniformly feeding water to the disk, and of common actuating means whereby the fan and the disk and/or grid members are rotatedand oscillated. f

other and further objects a'nd advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings':

Fig. 1 isa vertical, longitudinal sectional'view of an embodiment of Vmy invention; certain parts v thereof being broken away and other parts shown in elevation;

Fig. 2 is an enlarged fragmentary detailof the hub portion of the centrifuge disk and its as- 'sociated impeller air circulating -fans and the water feeding means; A i A 3 is a sectional' view o f a simpler form of '.thle invention disclosingI somewhat :a

circulating fan member;

Fig. 4 is a vertical sectional view of a further modification of my invention disclosing a rotary mounting for the water disintegrating blades or grids and two motors, one for operating the main air circulating fan and the centrifuge disk, and the other for operating the grid-carrying disk; Fig. 5 is an enlarged fragmentary sectional view more clearly disclosing the mounting of the disks and the associated water feeding means;

Fig. 6 is a vertical sectional view of another modiiicationof my invention disclosing a common power means for driving the main air cir-A culating fan, the centrifuge disk and the disk carrying the waterdisintegrating or impingement blades; and e A Fig. 7-/is 'a fragmentary sectional view taken approximately on the plane indicated by line 'I-1 of Fig. 6.

Like reference characters designate correspending parts in the several iigures of the draings.

Referring to Figs. 1 and 2, the numeral I indicates a xed supporting bracket or standard suitably locatedin the space to be humidied. The bracket is bifurcated at one end to provide spaced supporting arms 2 and 3 apertured to receive a vertical hollow supporting sleeve or standard 4 on which my humidifying unit is mounted. The upper arm 2 is `split and provided with a. clamping bolt 5 for securing the standard 4 therein in any adjusted position.

The humidifier unit comprises a motor 6, preferably o f the electric type, having its drive shaft extending forwardly and rearwardly, as indicated at 'I and 8. -The bottom of the motor is formed with a bearing 9 for the-reception Vof the upper end of the standard .4.

A truncated cone shaped casing I is secured to the motor at I I and is provided with an intermediate partition member I2 having a central aperture 3. The casingiscurved at I4 and faired into ,the casing I0 to provide a smooth air deflecting surface.

A fresh or filtered air intake duct I is formed in the upper portion ofthe casing I0, constituting the upper journal or pivot for the humidifying unit. A stationary air duct I6 is `provided having a ring or sleeve bearing I'I sur- -rounding the upper end of the fresh air duct I5, and constitutes the upper pivot bearing for the humidifier unit. I

Supporting posts I8 project .forwardly from the motor casing, providing a support for the partie tion I3 and the air deector grid-carrying plate or disk I9. This plate I9 is somewhat cone shaped, projecting forwardly to a point adjacent the front edge of the casing I9 and terminating in a bell shaped mouth 29. l

Water disintegrating blades or grid members 2| are uniformly spaced around the disk I9 just inside of the bell shaped portion and project forwardly from the vertical portion of the disk.

'I'he shaft of the motor has fixed thereon a `cone-shaped cenin'lfuge disk `or plate 22, the

periphery of which .is disposed adjacent to and intermediate the length of the grid members 2|, as shown in Fig. 1 ofthe drawings. A

A pairof air impellers or fans 23 and 24 are suitably carried by the centrifuge disk to rotate therewith, the impeller 23 being positioned between the air deilector disk I9 carrying the grids and thecentrifuge disk 22, while the impeller 24 is.disposed on the opposite or exterior side of the centrifuge disk. l

The centrifuge disk is provided adjacent its central portion with a curved annular flange 25 designed to receive-water from a water supply pipe or conduit 26 and to convey this water uniformly onto the face ofthe disk as it revolves.

--The pipe 25 leads to any suitable water supply pan 21. Thisv excess moisture is conveyed through the hollow bore of the pipe 28-communic'ating with the recess v3l) in the lower portion of the standard 4. Any suitable means such as a hose V3| may be provided to convey the water away from the humidier unit. y

The motor shaft 8 carries a conventional fan member 32 operating within a fan guard 33 supported by bracket members 34 secured to the casing I0 and motor 6 by the fastenings II, previously referred to.

Any suitable oscillating mechanism may provided for swinging the humidifier on its pivots and, forthe purpose of illustration, in Fig. 1

of the drawings I have provided a stationary arm 35 which may be either fixed to the Wall bracket I or secured to .the vertical standard 4, the latter arrangement permitting the zone of oscillation to be changed by loosening of the# clamping.bolt 5 and changing the position ofV l the standard 4.

The arm has a link 36 pivoted thereto at one end, the other; end of the link being connected at 31 to a crank disk 38 carried by the lower end of an operating shaft 39 Fjournalled in suitable bearings 4U carried by the fan guard and motorcasin'g. The upper end of the shaft 39 is provided with a worm gear 4| meshing with a worm gear 42' xed on Ythe motor shaft 8.

Electricity is supplied to the motor B through flexible conductor cables 43.

In the operation of the device, the fan 32 creates a draft or current of air exteriorly of the casing I0 toward the mouth,as indicated bythe arrows 44, and as the water is conveyed by the pipe 26 onto the curved ange 25 which in turn delivers this water onto the in'ner rear wall of the'rapidly rotating centrifuge disk 22 carried on the front motor shaft T, the water is uniformly "spread over the surface` of the disk due to ,the

centrifugal action and'moves toward the Vperiphery of the disk where it isthrown oif in a very fine nlm at a high velocity against the disintegrating blades or 'grids 2| which break the film of water into a, line spray or mist so that it may be readily disseminated.

The rotary air impellers 23 and 24 create a radial balancing draft or 'blast of air on both sides of the centrifuge disk 22, which air is directed l um: is mounted.

deposits between or on the.blades or grids and which ordinarily'interfere with theproperbreakingupofthewaterintomist-likeparticles.

In order to additionallyguard against this obg jectionable lint and dust'circulation, the air cir# 23 and 2l issupplied by' culatedbytheimpellers airfromasourceseparatefromtheairinthe space being humidiiied. This air maybe either filtered prior toits introductionV into the ducts Il eddying eects, as above stated.

Referring now to Fig. 3 of the drawingit. in which the impeller fan Il of Fig. 1 is Aomitted and the water is fed to theconcave side of the centrifuge disk rather than the convex side, la indicates a supporting bracket inwhich is journalled the vertical humidifier supporting standard la to the upper -motor-ia. Abell portion of which is secured the The motor is similar in construction to that shown in Fig. 1 having oppositely-extending shafts 'la and la; to the latter of which is secured acone shaped centrifuge disk 22a. Located adjacent I the hub portion of this disk is an impeller fan 24a having a central air intake-port 24e arranged in communication with a fresh air or filtered ail'.

intake ductlta. The en d 1a of the motorA shaft is provided with a fan guardY 13a carried on the brackets d fixed to the motor housing.

The 'inner portion ofthe 'centrifuge is providedwith a curved arcuate water distributing flange 25a having a suitable "water supply conduit 26a for supplying water to the aange 25a for uniform distribution to the disk 22a. If desired.

Y an oscillating mechanism similar to that disclosed in Fig. 1 may be provided to oscillate this humidifier unit onits supporting bracket la. Y

In the operation o! this form of the invention. when the motoria started and the' turned on, a small jet or ontothe curved wall A254x of the centrifuge disk causing the saine to'be spread out uniformly and projected tangentially from the periphery of the disk against the grid members Ila,v effectively up the water mist as inthe' previously described form. ".lhe form 32a creates an external balancing draft of air around the outside of the shaped casing,` while the fresh vor ltered'air from the duct liaisdispersedbytheimpelierluradiallyv surface of the disk'na i'anA 32a-adjacent the Ila, thus eliminating eddying currents ofV air. being Y outwardly adjacent the meeting the air from the mouth of the bell any tendency.` of created in the "vi air towardthe grids 2id also excem moisture from collecting -Y Inthemodiiled formdisclosedin`1'lga4 and5,

the grld-carryingdisk centrifuge disk and externalair. 'Iheimpellersofthcpreviousforms arewith. as the grid-carrying .dikconstandard u onwmcn'the nummmer 'rnesmtmuusrm move uniformly outwardly without objectionable' shaped casing Ila is secured to the motor casing constituting an enclosing hood.

for the water disintegrating grid-carrying disk ,centto the belldisi': amV

:air intake conduit nne'stream will be projected nlm intoa finespray-oiV Vis ltyofthemouth ofthe casingf or in the' zoneof the\grlds 2in. The ilow of clean prevents lint and-A is rotated Vas well as the'V the fan'for supplying vthe anni or motors-H1 joined 'together by the members Il. the motor l1 being provided with a 'It projecting f forwardly and carrying ahub El to which is secured'a com Abined rotar! apertui'ed impeller and grid-carryinFlg. 1'. ThiSdiSkiSalSO' se which is axes to the ena of the drive shaft ss l of the motor II and extends through the hollow motor shaft Il to a point beyond the same.

The motors Il and Il are surrounded by theas in the other form, this casing being supported at its smaller end from the casing of the motor Intermediate the length of the casing are radial supporting bracket arms i1 extending between the-casing ofthe motor Il and the interior surface of the casing 56.

- At the mouth of the casing, as indicated at i., of the-grid-carrying disk is disposed inspacedrelationtotheinner surface of the casing to provide a narrow air outlet slot adjaportion of the mouth; 'Ihe centrifuge disk is provided at its center with a cone-shaped water feeding sleeve 59 designed to uniformly feed l face of the disk through smallopenin'gs 60 adjacent the surface of the disk. Water for humidiiication purposes is fed into the center of the cone' member i! through seen in Fig. 5. The shaft` 55 ofthe casing I6 and Vhas secured thereon a-fan member 62 providing. an external air current or draft. as described in connection with the other figures of the drawings. A suitable guard G3 supported by brackets is ilx'ed tothe casing 5l and surrounds the fan 62.

As disclosed in the other forms, the casing 56 is provided with an upwardly extending air intake sleeve ii constituting the upper' pivot for the humidifier unit. The end'of this sleeve'or duct is in communication with a fresh but this conduit, as disclosed in Fig. 4, is provided with a conduit 61 leading to a source of fresh air, and a second Y ting e 6I is provided commuwith the space being humidified. In order to prevent foreignmatter such as lint fromentering the e i8', a dry illter The ciliating mechanism@ disclosed Vin thisV Yl2 provid a draft along the exterior Ii and around the mouth of said rotation of the centrifuge 54 or me man and csswater to the concave the supply ltube 6I, as

the standard u which-is 10m-nailed in we brsckoperation ofvv form of the device,-y

extends through the'closed endg 35 removably positioned on the end of this es G'Land Il to'variably control now'- ot air passing Vthrough the pas- 'me 7oV Ythegridcarryiugimpellerdisk" creates aof. air along the .surfaces of the Y outwardly through the openings il onto thesurface of the disk 54 and is then projected from the rim of the disk against the grids as before described.

The above results may be accomplished by rotating both of the disks 5| and El in the same direction to thereby obtain an extremely remove speed between the two disks and thereby creating'a much greater or effective impingng action between the grids and water iilm leaving the disk 54.

- In the form of my invention'dlsclosed in Hgs. 6 and 7, I provide a. supporting bracket 15 in which is journalled the supporting standard 15a carrying my humidifier unit. This unit comprises a motor 16 surrounded by a conical casing 11 suitably connected to the motor by bracket arms 18. 'I'he casing is formed Ywith a fresh air inlet duct 19 connecting with a damper-controlled dual air supply passage Il similar to the showing'in Fig. 4. 'I'he motor shaft 8| projects through the closed end of the casing 11 and has ixed thereon a fa'n 82 for supplying the external current or draft of air past the mouth of the casing 11. Bracket rods 83 projecting from the motor casing carry,` a guard N for the ian I2. The forward end of the motor casing or frame is provided with a trunnion 8i on which is journalled the hub 86 of my apertured combined air impeller and grid-carryingconical plate i1.

This plate is formed with a bell shaped mouth 88 located adjacent the inner surface of the mouth of the casing 'I1 in slightly spaced relation to provide a narrow air outlet slot. A ring or circle ofA water-disintegratin'g blades or grids is disposed in the iiat portion Il ofthe disk Y A.lust inside of thebell shaped portion Il.

The` hub 86 is formed with an enlarged internalring gear 8l meshing with an idler gear 92 journalledonanarm 93 iixedlysecuredtothe end of the trunnion Il of the motor frame. 'I 'he Sear lz meshes with` a-second gear l fixed to the motor .shaft Il projecting from the forward endot themotorcasing. Theendoithemotor shaft Ii has also xed thereon a conesimped' centrifuge disk IS, the periphery of which travels adjacent to the grids II and intermediate the length thereof.

Incatedonthereducedexterlonotthetront endo! theahaftll is a conical shapedyater-distributing member it having radially inclined pal- 'titlesl1leadingtotheexteriorsurfaceor!thev eeuu-ungemein n. water' a discharged n my mwlriicrtubeextendinghunaniitable waterilme. "Toprovideforthedllatiidthe' desixedrateandquantitythroughacmh'alwater motonlpreferablyinterpeaexiblehemunbelHnthelengthoithepIpeIinda-toprotheoocillationottheimit.- -Y Osciilation'fthehmnidiileris ccumvlllhedn in Flg.' l, this' mechanim beiugien the lame rreferencec :lmractex's: alsoadrampandmilarin 'constructiontothatdiselosedintheiiglneotthe drawingjustreferr'edtoisllmvided In the operation oftbis iorm,themotor 1l constitutes the sole power. source for ,the operational videiorthebemiingsc llthefllllleduring -the conditioner. As before,.the'fan I2 creates aV ery of the diskto break up the water projected vmeansforinterminglingktheairinthespacebeing ing 11 meeting the spray or moisture-laden mistV at the mouth of the casing'to prevent Aeddying. The grid-carrying impeller disk l1 and the centrifuge $5 are driven in reverse directions by the gearmechanism Si toMcausinga'naix-circulation or balancing current to be created outwardly through the grid members and through the space between the periphery of the impeller disk 8l and claim as new and desire to secure by Letters Patent is:

1.A In a humidiiier ofthe cias described for textile factories and the like, the combination ot water supply means, means for atomizing the water comprising a centrifuge disk anda water member surrounding. the periphtherefro`m, means for circulating cleanair only freefromlinttosaidatomizingdevicetodisseminate the atomized water, and separate air supply humidiiied with the aforementioned lint-free air supply and atomized water.

2. In a humidieri'the class described, for textile factories and the like, the combination of an open mouth casing, water supply means, meam 35 'within the casing for atomigzingthe water from said supply. an airduct for supplying lint free air to the interior of said casing, saidwateratomizing device constituting means for circulatingsaid lintto 'te the water vapor, and meansforsupplyingair exteriorly ofthecasing formixIngwiththelintI-freeairand'atervapor adjacent the mouth of the casing'to asakt in the diseminationoithewatervapor.

3.In,an air humidifying deviceof the class dcribed,acasing,a rotaryeentrifugediskwater impingement means adjacent theperipheryofsaiddiskmeansformpplyingwatertothe Vsuri'aceol'thedisk,n.ndnieansforcreatingan exteriorcm'rentofairatthemouthgfsaidcasing,

current ofltered airatsaidmouth eddyingofaircurrentsatsaidmwthandtodislaminate the moisture produced by the iilm of waterthrownby the diskagaimt the imnlnzement prevent 4.`Inadeviceottheclassdescribed.acasin havingadilchargemolmwateratomizlngmeam within said casing. water nxppiy'means therefor. meanstorcreatinganexteriorcurrentofairsm'- rotmdingsaiddischargemouthmeansforcreatingabalaneinginterlm-currentofairiordia- Vaen'iin'atixigsaidatomizaedwatenandineansfor nipplyingallthesaidsecondairiromaseparate '5. menumidmerermeemdeeermedJmpa iresnaii-inletportemonneeoiwaterllliullrllld meensvnnmuieangmammngthenr nomsaidnippmmeansforcreatingadraitot" impellermeansforcreatimabalancingmrrent Aeinemairini-eminemmam-gemouthwash" seminates'aldatomiledwaterandpreventeddying mouth,'and common operating means for said atomizing, draft and impeller means.

6. In a humidiner of the class described, a

i support, a casing having a fresh air inlet port and a discharge mouth, a motor, water supply means, a rotary centrifuge disk disposed in said casing to receive water from said supply means and operable by said motor, water atomining blades arranged adjacent the periphery of said disk for disintegrating the water projected from said disk into a iine .water mist, air impeller means on said disk for circulating air through said inlet, casing and said mouth to disseminate the water mist into the space being humidiiied,

and air impeller means exterior of the casing for' creating an auxiliary balancing draft of air toward said mouth to prevent eddying of the moiss terior of the place being .humidified the other of,v said pipes leading to the place being humidied, iilter means for the last mentioned pipe, air impeller means in said casing for disseminating the water mist into the place being humidied, and' separate air impeller meansex- `terior of the casing for creating an external current'of air towardthe mouth of the casing to assist in the dissemination of the water mist and toprevent eddying of the moisture-laden air in the vicinity of the mouth of the casing.

8. In a humidifier, a support, a motor mounted on said support having oppositely projecting shafts, a casing surrounding said motor and supported thereby, said casing comprising a tapering shell closed at its smaller end and having a discharge mouth at its larger end, an air inletl for introducing air into the shell intermediate the ends thereof, a partition intermediate the mouth and th'e inlet having a central opening, a centrifuge disk carried by saidmotor shaft hav-- ing air impeller means thereon for receiving air from said .central opening in the partition and impelling the same outwardlyof the casing between the periphery of the disk and the inner surface of the casing, water disintegrating grid `members located in the casing in the path' of water projected from the rim of the disk to carry the water mist outwardly through the mouth of the casing, and air impelling vmeans adjacent the small end of the casing. l f' 9. Ina humidier f the class described, a conical shapedcasing having an air inlet e and a discharge mouth, a motor therein, a cen-, trlfuge disk arranged in the mouth of 'said to be drivenby said motor, said disk having an opening therethrough adjacent its center, means for supplying waterto thesurface of said disk,

water disintegrating meansadjacent the periphery of the disk for breaking 'up the water projected from the disk into a flnemist. air impeller means on both sides of the disk in com- ;munication with the interior of the casing for receiving air'from the interior thereof and feeding said air along botnsides or the disk toward said water disintegrating means to conveyihe moisture throushthe mouth o; said casina-W A -casing through said for creat- 1 ing a current o! air along the exte or of support, a centrifuge the place being conditioned, and air impeller means exterior of the casing for creating a balancing current of air around the mouthof the casing to prevent eddylng of theA moisture-laden air in the vicinity of said mouth. 5 10. In a hurnidiner of the -class described, a

` support, a centrifuge disk carried thereby, means g for supplying water to the surface of said disk,

rotary waterdisintegrating means arranged to move'in a path around the periphery of said 10 centrifuge disk for breaking the water projected, from the periphery of the disk into water vapor, and means for rotating said 'disk and disintelgrating means.

v 11. In a humidifier ofthe class a support, a centrifuge disk carried thereby, means for supplying waterto thesurface of said disk, rotary water disintegrating means arranged to move in a path around the periphery of said centrifuge diskfor breaking the water projected m from the periphery of the disk intowater vapor, and means for rotating said disk and disintegrating means in opposite'directions.

v 12. In a humidifier ofthe class described, asupport, a centrifuge disk carried thereby, means for supplying water to the surface Voi: said disk, rotary water disintegrating means arranged-to moveiinl a path around the periphery of said centrifuge disk for breaking the water prolected from the periphery of the disk into watervapor, means for rotating said disk and disintegrating means, and a casing surrounding said disk. and

dislntegrating means having a discharge mouth and an air inlet4 port, one of said rotary disk androtarywaterdisintegratingmeansconstituting air impeller'means for impeiling .air from. the easing through said discharge mouth to disseminate the water vapor. Y

13. rn a humidifier of tneeiass descrlbed, a support, a centrifug disk carried thereby, means o for supplying water tothe surface of said disk,

lrotary water disintegrating means arranged! to movein` a path around the peripheryA of said centrifuge disk for breaking the water projected from the periphery-of the disk into water vapor, a means for rotating saiddisk and :H .4 r means, a casing surrounding said-disk and disvintegrating meanshavingadischargemouthand an air-- inlet port, one of said rotary disk and rotary waterl disin means constituting c air impeller means for impelling air .from the discharge mouth to diaand air circulating projected from the periphery of the diski'nto water'vapor, means for rotatingsaid disk and .5*

disintegrating means in directions comprising a common motor for drivingrone of said rotarymembersinonedirectionandreverse gearing between the motor and the other rotary member for driving the same-in atreverse dire-` 7g tion. Y L

15.Inahullnidiileroftheclassa upprt, a centrifuge disk carried thereby, means for supplying water to the surfaceV ofsaid to move in a path around the periphery of said centrifuge disk for breaking the water projected from the periphery of the disk into water vapor, means for rotating said disk and disintegrating means,acasingsurrounding saiddiskand disintegrating means having a discharge mouth and an air inlet port, one of said rotary disk and rotary water disintegrating means constituting air' impeller means for impeiling air from the 10 casing through said discharge mouth disseminate the water vapor, and air circulating means exterior of the casing-for directing a balancing current of air from the space being conditioned to prevent eddying of the moisture-laden air, said disk rotating means for the rotary disk means and water disintegrating means comprising a single motor constituting driving means for the external air circulating means.

WILLIAM H. sLoAN.

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