US1266461A - Evaporator. - Google Patents

Description

A. E. HAMMOND.

EVAPORATOR. APPLICATION FILED MAY 21. 1917.

2 SHEETSSHEET I.

A. E. HAMMOND.

EVAPORATOR.

APPLICATION FILED MAY 21. 19H- Patented May 14, 1918,

2 SHEETSSHEET 2.

maaAm //7 van tor,

To all whom it may concern:

nnrnn s ALBERT E. HAMMOND, OF PORTLAN D, OREGON.

' nvnrona'ron.

- Application filed May 21 Be it known that I, ALBERT E. HAMMo vn, a citizen of the United States, residing in the city of Portland, county of Multnomah, and State of Oregon, have invented certain new and useful Improvements in Evaporators, of which the following is a specification,

invention relates to evaporators of the character designed for drying fruit, vege--- tables, and the like, and has as its principal objectto provide an improved construction and arrangement for evaporators, whereby a more uniform result can be secured in the drying of a large quantity of matter.- order to explain my invention and to point out its improved features, I have illustrated one practical embodiment thereof inthe accompanying two sheets of drawi :s, wh1-ch I will now describe. Figure 1 is a horizontal sectional view through an evaporator embodying'my invention, with themiddle portion broken outto reduce the size of the figure; Fig. 2 is a side elevation thereof;

' ,Fig. 3 is a vertical cross sectional View thereof taken on the line 33 of Fig. 2; and Fig. 4 is an end view looking at the right handend' of Fig. 2.

Referring now more in detail to the drawings, my invention comprises a housing,

- preferably of long rectangular form, having the' si'de walls 11, a straight end wall 2,

and the converging end walls 3-3, all of said walls-being of double construction, whereby to be filled with anysuitable heat-retaining matter, as may be desired. Extending through the middle portion of said housing, longitudinally thereof, is a double-walled partition 4. In the straight end walls 2, I have provided a series of narrow, transversely extending doors, as 55, which can .be. opened, as indicated at the right hand end of Fig. 2, for admitting air into said housing. At the opposite end of said housing, I have provided a suction fan mechanism, designated as a'whole 6, which may be of any usual. construction, and the fan ofwhich may be driven as by means of a driving pulley 7. Near the straight end of said housing and adjacent the air inlet doors 55, I-have provided a series-of heating coils 8, shown in top plan view in Fig. 1, and in end view in Fig, 3, with supply pipe 9 leading thereto. Adjacent said heating coils I have-provided a curved air retarding distributing member 10, here illustrated as woven wire fabric,

Specification of Letters Patent. I Patented May 14:, 19 130 1917. Serial No. 169,958.

although any open or perforated structure through which the air canpass may be used, 1 said member operating to retard and more uniformlydistribute the air as it passes 0 therethrough into the drying chamber. similar member 11, is arranged at the fan end of the housing. It will be noticed that said members 10 and 11 are curved,'whereby to operate more edectively in an even distribution of the air passing through the evaporator housing.

' Ou 'o'pposite sides of the central partition ,4, are "car tracks 12 and 13, having at their ends turntables 14, 15, 16 and 17 said turntables being arranged at the junctures of said car tracks with transversely extending tracks 18 and '19, extending cross-wise through the housing, as indicated. Said housing is, provided at said cross tracks with doors 1-lf, whereby cars 20-20, on which the matter to be dried is placed on an suitable supporting means thereon, can e run into and out of said housing.

From this construction and arrangement so it will be evident that cars of'matter to be dried can be moved into said housing, for example, on the trackv 18, and then moved rearwardly on the track 12, to the track 19, and thence across the track 13 and back to the track 18, thus passing the car of materialto be dried slowly through the housing and turning it so that three sides of the car will .at different times be turned toward the end of the-housing fromwhich the heated air comes. It will also be evident that the matter tobe dried is first subjected to the lower heat,- which increases as the car is moved rearwardly'toward the heating end of the housing. The cars can either be removed tense heat andthen moved along to the op- 1'05 posite 'end thereof where the heat is not so. great.

Referring toFig. 2 I have provided in the sides of the housing little windows 21, with slide covers therefor, which may be no used, if desired, for inspecting the matter to be dried without opening the larger doors.

1. By reaching through one of these little windowssamples of matter being dried may be removed very conveniently.

Thus I'have provided-animproved eva orator of considerable length through which, ,in either direction, cars 0 can be moved with means for gassing them from one trac -'t0 theother, an with means for removing said'cars from either end. of

the housing, and whileI have shown "one practical embodiment of'my invention I do not limit the inventionto this particular form, except 'as 'I maybelimited-"by hereto appended claims.

Ic1a'im:-

ing tracks in said 'housing,- .cross tracks extending through said housing-near the op:

' cross tracks,'whereby cars can be transferred from one track to the'other, 'andair dis-' tributing and retarding means near the opposite ends'thereof -turn tables at the junc tures of saidilon'gitudinaltracks with said posite ends of said housing.

2. An'evaporator comprising a long rectangular housing provided at one end with means for admitting and heating air, and at its opposite end constructed with converging end walls, means operatin at the converging .ends of said end walls or causinga .circulati0n of air through said housing,

matter to be dried 3mm a car traeks arranged in. said housing between said air *retarding 'and ,distributin means to receive-cars of material to be dried, subj stantial-ly as described. Y

3. An evaporator comprising a long tan 'ular housing having converging end Ywal s at one end" with means ,thereat .for

causing'a circulation of air through said hous' throng 'said-rhousing, tables at the junctures of said cross trackswith said longitudinal tracks for turning. and transfep 'ri'ng cars from one track-to another, and a, curved air retardlng structure across, sald v I curved air distributing and means near the oppositeends of said'housingyand housing, means at the opposite end ofsaid for admitting ai means for heat-" ing sa d air as it enters said housing, car" tra'cks extending longitudinally within said Icar tracks extending cross-Wise 'housin adjacent the converging endwalls j thereo substantially as described.

4. In an evaporator of the character referred=- to,-a housing-with converging wall members at one end thereof,'m'eans forcausing a circulation of'air through said housingtoward said converging walls, and a curved air retarding structure with air openings" there'throu-gh, arranged near the converging end walls' of said housing.

Signed at-Portland, Multnomah county, Oregon, this-15th day of May, 1917.

- ALBERT In presence of:

' I. M; GRIFFIN,

-. J. C. STRENG,

n. HAMMOND.

Images