US1488953A

US1488953A - Drier

Info

Publication number: US1488953A
Application number: US575014A
Authority: US
Inventors: John O Tensfeldt
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-07-14
Filing date: 1922-07-14
Publication date: 1924-04-01
Anticipated expiration: 1941-04-01

Description

April 1, 1924.

J. O. TENSFELDT DRIER Filed July 14 1922 awwutoz Patented Apr. 11, 192% STATES DRIER.

Application filed July 14, 1922. Serial No. 575,014.

To all whom it may concern:

Be it known that I, JOHN O. TENSFELDT, a citizen of the United States, residing at Ridgefield, in the county of Bergen and State of New Jersey, have invented a new and useful Drier, of which the following is a specification.

This invention relates to drying machines; and has for its object to provide a drying machine in which the air will be dried, heated efliciently, and circulated efiiciently over the material to be dried.

The invention is illustrated in the accompanying drawing, in which- Fig. 1, is a plan View of a drier constructed in accordance with my invention-a part being broken away;

Fig. 2, is an elevation of the samethe central part being in section, on the line 2-2 of Fig. 1; and,

Fig. 3, is a fragmentary view, of a transverse section of the 'drier, as on the line 33 of Fig. 1.

In the drawing, like numerals of reference refer to the same part in each of the views.

In the practice of my invention I provide a drier, which maybe composed of any number of sections, as 5, 6, and 7, through which may pass a carrier 8, preferably composed of a plurality of strips 9, having the intervening spaces 10, provided with the perforations 11, for the ready passage of air. Any number of doors, or panels, as 12, may be provided to close the drying chamber, and provide means for the easy inspection of the material being dried, as will be readily understood.

Within each of the parts, or sections 5, 6, and 7, are mounted a plurality of elongated gas burners 13, each of which is provided with a plurality of downwardly-inclined perforations 14 so that the burning gas escaping therefrom will be directed downwardly, and against the sides of the U- shaped casings 15, each of which is provided with a plurality of perforations 16 in the bottom thereof.

The burners 13 may be supplied with a common gas pipe 17; and each is preferably provided with an air mixer 18.

Over each gas burner 13 I mount a plurality of flue tubes 19, each of which coinmunicates with a transverse tube 20, in communication with similar flue tubes in the same section through tubes 21; and a tube 22, may be used to connect the tubes 20 in one section with the tubes 20 in the next sec-- tion. A baflie plate 23 may be used in each section to direct the air entering from the blower 24 through the pipe 25; and beneath the carrier 8, I provide a chamber 26, provided With a plurality of perforations 27, in addition to the perforations 11, so that air can readily enter this chamber after passing over the material being dried; and in communication with this chamber is a tube 28, in which may be mounted a drying cartridge 29 (comprising any well known moisture," absorbing chemical), through which the air from the chamber 26 must pass beforereaching again the blower, or fan 24, as will be understood.

In operation, the material to be dried is placed on the carrier .8, and passes through the several sections. It will be understood that at this time, gas is being burned in each of the gas burners 13, while beneath each burner is secured a netting 30, so that any material on the carrier can not possibly come into contact with any of the gas flames; while the netting will readily allow any radiant heat from each gas flame reaching the material on the carrier, in addition to the heating of the air around the tubes above, entering through the perforations 16,

in the U-shaped casings 15. Air is forced into the drier by the fan, or blower 24, through the tubes 25; and travels along the space 31, above the baffle plates 23, as indicated with the arrows. It will be noted that the haflie plates are shorter than the respective sections, so that air can pass downward through the spaces 32, to circulate around the

tubes

19, 20, 21, and 22, where it is heated not only from the gas burners 13, but also by the radiation. of heat from the flue tubes, as will be readily understood, before passing through the perforations 16, in the U-shaped casings-which are so constructed that the air will be spread out over the material being dried, as indicated with the arrows 33. After passing over this material the air will pass through the perforations 11, and 27, into the chamber 26, and from thence through the drying cartridge 29, and tube 28, to the blower 24, where it will be again forced into the'drier, so that any heat remaining in this air will not be lost as it is utilized over again in drying the material passing through the device, as will be clear.

lit will be observed that the air delivery tube is constructed so as to deliver air through ports, as 34, directed in a manner to deliver the air in the direction it has to travel so it will go in a straight line, as indicated with the arrows, through the several sections of that end. The gases of combustion pass through the several flue tubes till it reaches the discharge pipe 35, and passes from thence through the fine 36.

It will thus be seen that it have provided a drier in which the drying heat is applied to the air after the air has entered the drier and before it enters the drying chamber. Provision is also made to prevent the material being dried from coming into contact with the gas flame while providing means for the heat from the burning gas reaching the material being dried.

It will be seen that by the system shown the air is heated very eiiiciently, and applied to the material on the carrier in a very efficient manner by reason of the pockets, or U-shaped parts in the floor of the heating chamberwhich parts project below the burners thereby providing a great expanse of heating surface for the gas flames from the burners; and the eflicient heating of the air entering the chamber above the drying chamber before the same is passed into the drying chamber,

The construction of the receiving chamber for the air after the same has passed through the drying chamber offers a very eiiicient means for conserving the heated air and passing it again into the drying chamber, as well as the efficient manner in applying the air to the material being dried. The entire construction in combination with the means for extracting the moisture from the air before it again reaches the fan, or blower, and is again passed into the-heating chamber, is very eflicient and desirable.

I claim:

1; A drier comprising a drying chamber, a heating device including a burner mounted in the upper part of said drying chamber, means to pass material to be dried through said drying chamber,'and means to prevent the material being dried coming into contact with the flame from said burner comprising a screen mounted between the drying chamber and said flame.

2. lin a drier having a drying chamber and means to pass material to be dried through said drying chamber, a'heating device mounted in the upper part of said drying chamber, a device adapted to apply heat to the material passing through said drying chamber, said device having an open flame burner as a component part thereof, and a screen interposed between said burner and the material being dried.

3. A drier comprising a drying chamber, means to pass material to be dried through reassess said chamber, a gas burner mounted above the material being dried, flues positioned to carry off the gases of combustion, and means to pass the air entering the drying chamber over said flue tubes and also apply heat directly from the gas burner to the air en tering said drying chamber.

4*. A drier comprising a drying chamber, means to pass material to be dried through said chamber, means to circulate air through said chamber, a heater located in the upper part of said drying chamber adapted to apply heat to the circulating air, said heater being adapted to apply heat also directly to the material being dried, and means to dry the circulating air 5. A drier comprising a drying chamber, means to circulate air through said chamber, means to pass material to be dried through said chamber, a chamber mounted above said drying chamber forming a heating chamber, flue tubes and baffle plates mounted in said heating chamber, means to circulate air through said heating chamber prior to its entrance into said drying chamber, and means to apply heat to the air in said heating chamber.

6. A. drier comprising a drying chamber, means to pass material to be dried through said chamber, means to circulate air throug said chamber, a chamber mounted above said chamber forming a heating chamber, means to circulate air through said heating chamber prior to its entrance into said drying chamber, means to apply heat to the air in said heating chamber, and a plurality of pockets forming a part of said heating chamber.

7. A drier comprising a drying chamber, means to pass material to be dried therethrough, means to circulate air through said drying chamber, a chamber above said drying chamber, and provided with a plurality of perforated pockets adapted to deliver air onto the material being dried in said drying chamber, means to circulate air through said upper chamber prior to its entrance into the drying chamber, and means to apply heat to the air in the upper chamber and also to the air in the drying chamber.

8. In a drier provided with a drying chamber and means to pass material being dried through said drying chamber, a heating chamber above said drying chamber provided with a plurality of pockets, means to circulate air through said heating chamber and said pockets, and means to apply heat to the air in said heating chamber and in said pockets.

9. The herein described drier comprising a drying chamber, a carrier passing through said chamber composed of a plurality of strips, a heating chamber located beneath said drying chamber provided with a plurality of perforations adapted to receive the air after passing through said drying chamber, a. ing chamber-the floor of said heating chamheating chamber mounted above said dryher being provided with a plurality of ing chamber, a plurality of gas burners pockets provided with perforations, and 1 adapted to heat the air in said heating means to pass air through said chambers.

5 chamber, a plurality of gas flues passing Dated this 11th day of July, 1922.

from said burners through said heating chamber, baflie plates mounted in said heat- JOHN O. TEN SFELDT.