US642325A - Evaporating-pan. - Google Patents

Description

No. 642,325. Patented 1an. 30, |900.

` F; E. HAYES.

EVAPRATING PAN.

(Application led Mar. 1, 1899.) l (No Model.) 2.Sheets-Shee 2.

HIHH I STATES PATENT OFFICE.

FLAVIUS E. HAYES, OF VICK, OHIO.

EVPORATlNG-l-PAN.

SPECIFICATION forming part of Letters Patent No. 642,325, dated January 30, 1900.

Application filed March l, 1899. Serial No. 707,300 (No model.)

To a/ZZ whom it may concern.-

Be it known that I, FLAvIUs E. HAYES, a citizen of the United States, residing at Wick, in the county of Ashtabula and State of Ohio, have invented a new and useful Evaporator, of which the following is a specification.

This invention relates to evaporator-s; and the object of the invention is to provide a simple and eflieient apparatus of this character wherein a high heat can be quickly developed to secure the rapid boiling of the liquid in the pans,Y thereby insuring a better product and necessitating the employment of a reduced amount of fuel as compared with that burned in certain existing forms of apparatus of this type, and the device can be used in the manufacture of niaple-sugar, salt, and sugar, and, in fact, in any of the arts requiring a device of the character specified.

The apparatus involves in its construction two communicating tanks and what may be termed a finishing-tank, from Which the finished product is drawn off, and I utilize the steam given off from one of the lirst-men tioned tanks as a means for heating the tinishing-tank, and thereby save what would otherwise be waste, and as a means for securing the highest efciency from such steam the pipe which conveys the same from the primary to the final tank also passes through the nre-chamber, thereby being further heated by the fire. While in practice beneficial results are obtained and the output of the apparatus is increased by the use of the steam connections before set forth, it is apparent that the latter can in some cases be dispensed with and a finishing-tank other than that j ust described employed.

With these ends in view the invention consists in the novel combination of elements and in the construction and arrangement of parts, which will be hereinafter fully described and claimed.

To enable others to understand the invention, l have illustrated the preferred embodiment thereof in the accompanying drawings, forming a part of this specification, and in which- Figure 1 is a plan view of an evaporating apparatus constructed in accordance with my invention. Fig. 2 is a longitudinal central section of the same. Fig. 3 is a transverse section taken in the line 3 3, Fig. 1. Fig. l is a transverse section taken in the line 4 4 of Fig. 1.

Like characters denote like and corresponding parts in each of the several figures of the drawings.

The apparatus involves in its construction a furnace, which may be of any suitable character. The furnace is designated by F, and it includes in its construction the fire-chainber 2 at the front end thereof and a smokepipe or chimney at the rear end thereof.

The evaporating-pans are designated by E and E', respectively, and they are provided at their opposite sides with overhanging portions, as Il, adapted to rest upon the upper edge of the furnace, and the pans closely lit Within said furnace and abut against each other, as clearly represented in Fig. 1. The front pan E is the primary pau and receives the liquid which boils therein and which Hows into the secondary or back pan E and from thence to a finishing-pau, hereinafter more particularly described and represented herein as supported independently of the furnace.

The liquid to be boiled is received from a suitable source of supply (not shown) and is conducted by a suitable piping system to the primary pan, and the piping passes through the lire-chamber 5 of the furnace, thereby initially heating the liquid.

The means for supplying the sap or other liquid to the primary evaporating-pan E embodies a valve casing or chamber 6, having a supply-opening 7, controlled by the valve S. This valve-easing is connected with the supply-tank by means of a pipe 9, a short section of which is illustrated in Fig. 1, and it is also connected with the primary pan E by means of the pipe or conduit 10, which can be lnade in sections connected by couplings and which extend through the furnace-chamber 5 below the secondary pan E, and the discharge end of the pipe 10 is located over the primary tank, whereby the liquid from the source of supply can flow into said tank E.

The supply ofsap or liquid is automatically controlled through the intervention of a float, as 12, located in the preferably cylindrical tank 13, secured to one corner of the secondary evaporating-pan E. The float is provided with a vertical stem 14, which is pivotally IOO connected with the stem l5 of the supply-controlling valve 8. The tank 13 connects with the tank E by a short pipe 16, whereby the liquid can flow into the tank for the purpose. of elevating the float, and consequently shutting o the valve to stop the supply of liquid automatically when the maximum quantity has been supplied to the two communicating pans E and E. When the supply in said 'tanks goes below the predetermined standard,

the float 12 can, of course, drop, thereby opening the valve 8 and permit a further supply of liquid.

The tank E is cross-sectionally corrugated, in which corrugations lie the hot-air iiues 17, constituting a part of said tank and arranged in parallelism longitudinally thereof, and the hot air from the tire-chamber 5 or the front end of the latter is adapted to enter the front end of the hot-air tiues and to pass through the saine and into the chimney or smoke-pipe 3. The primary pan E is cross-sectionally corrugated and the corrugations are beveled, as at 18, upon their under sides next to the secondary tank E', thereby permitting the heated air from the fire-chamber to freely pass within the entering ends of the hot-air flues or pipes 17.

The chimney or smoke-pipe 3 is separated vertically into two iiues 19 and 19', both of which communicate with the furnace lire- A chamber 5, and Pone of them communicates with the furnace through the hot-air flues 17,whereby a separate draft system is maintained for the secondary tank, the air passing through the iiues 17 and from thence to the communicating flue 19. The chimney is thus separated by the vertical partition 20, extending entirely across the same transversely thereof and also extending below the chimney and into the furnace and being connected with the side walls thereof and having a fo'rwardly-extending flange or ledge 2l, adapted to cooperate with the Wide damper 22, which is secured at its middle to the shaft 23, which is supported in journal-openings in the opposite walls of. the furnace and one end of which is extended outward to form the handle by which said damper can be shifted. The flange 21 is horizontal and it is located substantially midway between the upper and lower edges of the furnace, whereby when the damper is in its open or horizontal position the different and superposed currents can pass through the furnace between the chimney and the lire-box, one line of air-currents passing through the horizontal hot-air fines 17, forming a part of the tank E, and the other air-currents passing into the chimney below the hot-air tubes or flues 17 and communicating, respectively, with the chimneyflues 19 and 19 and passing above and below the damper 22. By shifting the damper out of its said horizontal position the two dierent lines of draft can be regulated. By creating the two separate draft systems I am enabled to secure the maximum amount of heat in the tire-chamber as well as to secure the application of highly-heated air directly to the secondary tank.

The final tank or pan is designated by E", and it is represented as being supported independently of the furnace, and at this point I desire to state that this tank can in some cases be dispensed with and a different kind of iinishing-tank employed.

The final tank or pan receives the boiling liquid from the secondary or intermediate tank E', the short pipe 25, secured to the pan E and having its discharge edge located over the tank or pan E", serving as a convenient means for conducting the liquid.

The final or finishing tank E is provided with a series of depending legs 26, which are adapted to rest upon the floor or foundation of a building adjacent to the furnace, and the liquid within the same is heated by steam from one of the tanks sustained by the furnace F, thereby saving what would otherwise be waste.

The primary tank E is covered by a dome or hood 27, the space within the same constituting a steam-chamber, and this dome or hood is provided at its upper side with the pipe 28' opening inward and which communicates with the pipe 28, the latter in turn being connected with the nipple 29 on one end of the finishing-tank. The tank E has a series of longitudinal steam-pipes 30, which open into the chambers 31 and 32 at the opposite ends of said tank, whereby steam which is generated in the primary tank E can pass from the dome or hood 27 into the pipe 28, and from thence into the supply-chamber 3l of the finishing-tank, so that it can pass through the steam-pipes 30, which lie in the corrugations of the bottom of the tank E". The steam when it leaves the pipes 30 enters thel exhaust-chamber 32, having a series of ports 33 for the escape thereof.

As a means for more highly heating the steam which collects in the hood or dome 27, the pipe 28, which connects the same with the steam-supply chamber, extends entirely across the front end of the fire-chamber 2. The supply-pipe 28 includes in its construction a coil, as 34, of one or more convolutions, which extends entirely across the furnace, whereby the steam passing through the same will be heated to a high degree directly by the fire.

The final tank E is provided with a drawoff pipe 35, through which the contents of said tank can flow and into suitable receptacles or cans and in condition for the market.

Changes in the form, proportion, size, and the minor details of construction within the scope of the appended claims may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

The evaporating-pan E consists of a number of separated sections, as will be evident upon an inspection of Figs. 1 and 3, and

IOO

ceases a whether the bottom of this pan be plain or corrugated I employ an air-iiue for each section, as will be also seen from said views.

I-Iaving thus described the invention, what I claim isl. In an evaporator, the combination with a furnace, of primary and secondary pans, the latter having a corrugated bottom, hotair fines lying in said corrugations and opening through the ends of the tank, a supplypipe having its discharge end located to supply liquid to the primary pan, a tank coinmunicating with the secondary pan, a float disposed in said tank, and a valve in the supply-pipe connected with and operated by said tank.

2. In an evaporator, the combination with a furnace, of primary and secondary pans having open communication and both supported by the furnace, to be heat-ed thereby, the secondary pan having a longitudinallycorrugated bottom, hot-air fines lying in said corrugations and opening through the ends of the pan, a supply-pipe having its discharge end located to supply liquid to the primary pan, a tank communicating with the secondary pan, a float disposed in said tank, and a valve in the supply-pipe connected with and operated by said float, substantially as described.

3. In an evaporator, the combination with a furnace, of a corrugated pan supported thereby and having a series of longitudinal hot-air fines lying in said corrugations, a smoke-pipe, a partition dividing the same into two different portions, one of said pipe p0rtions communicating with the iiues and the other portion communicating directly with the furnace, communication between the smoke-pipe portions, and a damper for said communication, substantially as described.

et. In an evaporator, the combination with a furnace, of a corrugated pan supported thereby and having a series of longitudinal air-fines lying in said corrugations, the upper surfaces of which are free of the corrugated bottom of the tank, a smoke-pipe, a partition dividing the smoke-pipe into two different portions and extending below the same and into the furnace and having a horizontal flange, one of said sections communicating' with said tlues and the other section communicating directly with the furnace, a damper located between said pan and smoke-pipe and means for shifting said damper into and out of engagement with said flange, to open and close communication between the sections of the pipe, substantially as described.

5. In an evaporator, the combination with a furnace, of a primary tank supported thereby and having a dome provided with a pipe opening into said dome, a nishing-pan having a corrugated bottom and having a series of steam-pipes lying within the corrugations, a su pply-pipe connected with the pipe in said dome and communicating with the steampipes in said finishing-pan, a secondary pan having open communication with the firstnamed pan, a tank communicating with the secondary pan, and a float-valve in said tank connected with the supply-pipe to regulate the passage of liquid to the primary pan, substantiall y as described.

6. In an evaporator, the combination with a furnace, of a primary pan and a secondary pan supported thereon and having open communication, said secondary pan having a corrugated bottom, flues lying in said corrugations and opening through the ends of the secondary pan, a cut-away portion o n the primary pan affording a passage to said tlues, a supply-pipe for the primary pan, a tank communicating with the first-named pan, and a float-valve in said tank and having connections with the supply-pipe to regulate the iiow therethrough, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aiiixed my signature in the presence of two witnesses.

FLAVIUS E. HAYES.

lVitnesses:

C. D. AINGER, M. B. AINGER.

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