US1214239A - Drying-machine for alimentary pastes. - Google Patents

Description

A. TEGOLB.

DRYING MAGHINE FOR ALIMENTARY PAS TESP APPLICATION FILED MAY 24. I916.

lm mw, Patented Jan. 30,1917.

AUGUST TEGOLI, OF S TA ROSA, CALIFORNIA, ASSTGNOR T0 TEGULI DRYING APPA- EAT US MANUFACTURING COMPANY, LTD., A CORPORATION 015' GALlUE'GRlh'TA.

DRYING-MACHINE F013. ALIMENTARY PASTES.

Specification of Letters Patent. v

Patented Jan, 36 rear,

Application filed my 2%, 1916. Serial No. 99,619.

. the following is a specification, reference be ing had to the accompanying drawings.

This invention relates to improvements in' drying machines and particularly machines for drying alimentary pastes used in the manufacture of macaroni, spaghetti, vermicelli, etc.

The general object of this invention is the provision of a drying machine in which the paste can be quickly and uniformly dried without causing the paste to crack the dryin process.

A urther object of the invention is the provision of amachine of this character in which the fresh air entering the machine is a uniformly distributed so that no one .por-

tion 'of the paste is subjected to a greater action than another portion and further that fresh airentering the drying room may be thoroughly mixed with warm air which has been previously passed through the drying chamber.

Still another object of the invention is the provision of means whereby fresh air ma; be drawn through the drying room or compartment without intermixture with air previously drawn through the compartment or drying room.

Y Still another object is to provide means whereby the relatively warm air may be carried directly downward into any one of a series of rack supporting trucks.

Other objects will appear in the course of the following specification.

My invention is illustrated in the accompanying drawings wherein, Figure 1 is a vertical sectional view of a drying machine constructed. inaccordance with my invention; and Fig. 2 is a longitudinal sectional view thereof.

As will be seen by reference to these drawings, 1'0 designates a drying chamber or one end of the drying room 10 is an exhaust ,fan 14: disposed in an opening in a partition 15, this exhaust fan being mounted upon a shaft 16 driven in any suitable manner, said shaft being located in what I will call the circulating chamber 17. There is a window 18in the end of the circulating chamber 17. This window constitutes a more or less adjustable closure to regulate the passage of air fromthe circulating chamber 17.

' The chamber 10 is disposed in a relatively large room or chamber 19 of which the circulating chamber 1'} forms part. This chamber 19 extends at one end to form the circulating chamber above described and at the other end to form the circulating chamber 2O. The end wall of the circulating chamber 20 is formed with louvers 21, through which fresh air passes. The end wall of the chamber 10 adjacent the louvers 21 is also formed with louvers 22. The chamber 19 extends abovethe top wall of thechamber 10 in the form of an air passage designated 23, which leads from the circulating chamber '17 to the circulating chamber 20 and at opposite ends this'air passage 23 is provided with the controlling doors 24 and 25 whichare so mounted that they may be independently shifted either into a vertical position preventing the circulation of air along the passage 23 or disposed in a horizontal posltion, as illustrated in Fig.1, permitting' thecirculation of air.. I Also disposed in the top wall of the chamber 10 are the. fiues 26, each formed with a hinged cover 27, means being provided whereby these covers may be opened or closed.

The chamber 10 is designed-to contain a plurality of trucks, certain of the trucks, as for instance the trucks 12, being arranged to support what is known as long paste and,

to this end being provided with a plurality of rods 28. Certain other trucks, as for instance-the trucks 13 are formed with trays having bottoms of wire network, upon which may be laid what is known as coil paste.

In practical use, the air is drawn into chamber 10 by means of the exhaust fan 14, air being drawn through the louvers 21- and 22, these louvers acting to thoroughly distribute the air so. that no one portion of the paste which is to be dried, will be subjected to more air than any other portion. Under normal circumstances, the exhaust fan 14 will draw the air in the direction of the arrows in Fig. 1 and then force the air up into the air trunk or passage 23, the airtraveling back along this passage and passing into the circulation chamber 20 where it mixes with the fresh air in the chamber 20 and passes through the louvers 22 and back into the chamber 10. If it be desired to draw entirely fresh air through the chamber 10 and not intermix this fresh air with the'air previously drawn through thechamber 10, then the door 24 is closed and if it be desired to cause the air to pass from the chamber 10 into the passage 23 and then'down'through any of the fines 26, the door 25 is closed and one or more of the doors 27 are opened, whereupon the air will passdirectly downward on to the paste and will-"continue to circulate without a great deal of mixture of the fresh air. In drying paste of the character described,

it is necessary that'the fresh paste shall be subjected to relatively warm and moist currents of air so that it will not be dried too quickly. This may be readily accomplished with my-machine, by permitting the air once drawn through the drying chamber 10 to pass again and again through the drying "chamber. Then after the paste is dried a sufficient amount, so .that it will not crack, the air passage 23 may be closed up by shutting the door or valve 24: and the air drawn entirely through the louver 21 'so as to subject the paste to currents of relatively cool dry air which will dry the paste more quickly. It will be seen that the rapidity with which the airpasses through the paste and the rapidity with which the fresh air is drawn through the chamber will depend upon the extent with which the window 18 is opened and that even the passage of air throughthe-trunk'23 may be regulated by regulating the extent to which the doors 24 and; 25 are opened. Ordinarily, these doors 24; and- 25 w1ll be either closed or opened. Under many circumstances, it is not dGSiI'B:

,ble to have a very. great volume of air drawn longitudinally through the chamber 10 as thisma'y tend toblow about the strings of alimentary paste so'that they will become crumpled brjtwisted and adhere to each other. This is avoided 'by allowing the air to pass downward through the openings 26. The air maybe allowed to pass downward through these openings 26 and also through the-full length ofi the passage 23 and in through the louver 22. It is also obvious that means may be provided in connection with the louver 21 for regulating the amountof freshair which may be drawn in. I have shown for this purpose a series of shutters 28 which may be readily adjusted to reduce the area of the openings through which fresh air passes. It is to be understood, of course, that the capacity of the chamber 10 may. be

- of the plant.

greatly increased over what has been illustrated, depending entirely upon the capacity For the purpose prior to its entrance into the circulating chamber 20, I provide the steam pipes 29 which may be in the form of a radiator or any other suitable appliance which will uniformly heat the air, these steam pipes being shown as extending vertically upward through the chamber 20. On days where the fresh air is damp and cold, the dampers 28 are closed or nearly closed and ifiethat case the air is allowed to circulate continuously through the drying chamber, the air passage 23 and back into the drying chamber,the air being warmed by the steam pipes. Any

of warming the freshai r fresh air which may be allowed to enter is also warmed and to a certain extentdried by the steam pipes. 'Where the air is toodry, as at the beginning of the drying opera tion, when too quick drying is to be. prevented, the shutters or dampers 28, may be.

closed and the air is continuously circulated through the drying chamber and the circulating chambers, the air being" slightly dampened by contact with the drying paste and being warmed by contact with the warm paste. After the paste has been initially dried, however, in the manner above described,'it is possible to further and quickly passage 23 and allowing fresh air'to pass entirely through the drying chamben Thls fresh air may be warmed or not,--as desired,

by means of the radiators 29 or other heat appliances of any suitable construction, ra diators however, being preferred. It is obvious thatwhere cool air is desired the radiators can be shut off.

. dry by cuttingofi the entrance to the air While I have referred throughout the specification to the fact that this machine is particularly used for drying alimentary" pastes, it is to be understood that the maone end of the drying chamber for moving air-therethrough, means for admitting fresh air to the circulating chamber located at the opposite end of the drying chamber from, said air moving means, means for controlling the passage of air through any one of said openings from the air passage into the drying chamber, and means for preventing the inlet of air into either or both ends of the air pmage from either circulating chamber.

naiaaee 2. A drying apparatus including a v1 chamber ateach end of the drying chamber,

an air passage connecting the circulating chamber, means for causing air to flow through the chamber in'one direction, means for closing one or both ends of the air passage to prevent the passage of air there-- through, means for permittlng air. from the air passage to enter the drying chamber directly at a plurality of points, and means for mixing fresh air with the air already used prior to the entrance of this air into the drying chamber.

3. A drying apparatus comprising a drying.chamber open at opposite ends and having charging doors and side walls, circulating chambers, one at each end of the drying chamber, a suction fan' at one end of the drying chamber discharging into the adjacent c rculating chamber, a passage connecting the circulating chambers, a louver at the end of-the drying chamber opposite the 'fan,

, and a louver in the wall of the adjacent circulating chamber, and means for permit ting or preventing the passageof air along said air passage.

4; A drying apparatus including a drying chamber open at opposite ends, air circulating chambers at opposite ends of the drying chamber, one of said circulating chambers being provided with a controllable out-. let, means drawing air through the drying chamber and discharging it into the lastnamed circulating chamber, controllable means for admitting fresh air into the 0pposite circulating chamber, a louver admitting air from said last named circulating chamber into the end of the drying chamber opposite the air drying means, an'air,

passage connecting the circulating chambers, and a door in said passage, in one position permitting the circulation of air therethrough and in the other position pre-- venting said circulation.

. 5. A drying apparatus including a drying chamber open at opposite ends, circulating chambers disposed one at each end of the drying chamber, a suction fan 'at one end to of the drying chamber and discharging into the circulating chamber at the other end of signature in t the drying chamber, the other circulating chamber having means for admitting fresh air thereto, a louver in the adjacent end of the drying chamber, an air passage connecting the circulating chambers and extending over the top of the drying chamber, controllable doors at oppesite ends of'the air passage, said air passage having open ings extending into the drying chamber and disposed at spaced intervals, and means for controlling the passage of air downward through said openings.

6. A drying apparatus comprising a drying chamber having doors at its sides, the

drying chamber being open at its ends,

trucks movable into the drying chamber and having-paste drying racks, circulating chambers disposed one at each end of the drying chamber, a suction fan drawing ,air through the drying chamber and discharg ing it into. the adjacent circulating chamber, a controllable air discharge from 'thelast named circulating chamber, a. louver'admitting air to the other circulatingchamber,

a louver disposed in theend wall of the drying chamber opposite the" fan, an air] passage connecting the circulating chambers andextending over the top ofthe drying chamber, and means for nreventing or permitting the passage of air through the air passage. v

7. A paste drying apparatus including a drying chamber open at opposite ends, means for causing air to flow through the chamber in one direction, means for directing the: air so drawn through the chamher back to the entrance thereof or prevent ing such return of the air, means for permitting the air drawn through the chamber to be directed intothedrying chamber at a plurality of points, means for mixing fresh air with the air already used prior to its entrance into the chamber,'and means for heating the fresh air prior to its entrance into the drying chamber.

In testimony1 whereof I hereunto afix my e presence of two witnesses. I AUGUST TEGOLI. Witnesses:

A. L. PODESTA A Gi. snow:-

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