US1004391A

US1004391A - Tank-heater.

Info

Publication number: US1004391A
Application number: US60305311A
Authority: US
Inventors: David M Dunlap
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-01-17
Filing date: 1911-01-17
Publication date: 1911-09-26
Anticipated expiration: 1928-09-26

Description

D. M. DUNLAP.

TANK HEATER.

APPLIGATION FILED JAN. 17, 1911.

Patented Sept. 26, 1911.

2 SHEBTS -SHEET 1.

D. M. DUNLAP.

TANK HEATER.

APPLIUATIUH FILED hum-1, 1911.

Patented Sept. 26, 1911.

2 SHEETS-SHEET 2 DAVIIl M. DUNLAP, 0F CHICORA, PENNSYLVANIA.

TA NK-HE ATER.

Specification of Letters Patent.

Patented Sept. 26, 1911.

Application filed January 17, 1911. Serial No. 603,053.

has for its objectto provide a simple, inexpensive and at the same time very effective device for heating crude oil or other liquids contained in tanks for the purpose'of romoting its fluidity and mobility or particles in transmission, and for other purposes.

Another objectof the invention to pro-' vide a furnace for heating oil fluids in a tank and causing a continuous circulation of the fluid between the tank andv the furnace.

With the above and other objects in view, I have invented the device illustrated in the accompanying drawings in which,

F igure 1 is s longitu inal vertical sectional view of a. tank and heater therefor. Fig. 2 is a longitudinal horizontal sectional view taken on the line 2 2 of Fig. 3. Fig. 3 is an end elevation of the device, and Fig. 4 is a transverse vertical sectional view taken on the line 4----l of Fig. 1. i

Referring to the accompanying drawings 1 indicates a tank and 2 a furnace.

3 an outlet for oil or other fluid con tained in the tank, by means of which the Fluid is conveyed through a series of pipes 4, 5, o, '7, and 8; the pipes 5 and 7 passing through i firebox 9 of lhe furnace and directly over the oil or gas burner 10, which is fed with fuel through, the feed pipe ll.

A. reservoir l2 is locfiled directly above and entirely ever the lire lam 1), and a mell; 13 is 'n'ovided to carry off the frrin the fire box. The fluid passes from the pipe S through the inlet 14 and. enter-stile reservoir l2, and when it is heated suiliciently, the expansion forces it to pass through the outlet l5, and through the pipes l6. l? and 18 into the bottom of the tank 1. A door '19 provided by means cl. which access may be lied to the l'iurner i0 ht which it maybe lighted. A hamper-alum :age 20 is connected with the reservoir 1,2, that the temperalure of the fluid thcrcin may be ascertained any time.

The hirnace 2 has all its walls except ihe top wall thereof lined with asbestos or other n Jni-cQncluQtiug material, 2]., so that al the heat possible may be retained within the furnace.

The top wall 22 of the firebox 9 is the bottom wall of the reservoir. A check valve 23 is located between the pipes 4 and 5 and prevents the fluid under expansion from being forced back through the same pipes into the tank 1. All the various pipes are con neeted with. T-joints 24, and have their outer ends closed with plugs 25, which may be re moved at any time for the purpose of cleaning the pipes,

It will be seen from the fore oing descrip tion that the pressure of the vuid contained in the tank 1 will force the fluid to fill the pipes 5 and 7 and the reservoir 12. The check valve will prevent a return of the fluid through the same channels when the fluid becomes heated and thereby expanded, con sequently the fluid is forced back into the bottom of the tank through the pipes 16, 1.7, and 18 and the heated fluid naturally rises to the top of the tank and raises the temperature of all the fluid contained in the tank, thus increasing the pressure in the tank and thereby assisting in forein the cooler portion of the fluid back throng the furnace or heater. :1. continuous circulation is maintained between the tank and heater.

In pointing out more clearly the distinctive features of my invention, I would state that I am aware that in hot water heaters and various other liquid heaters it has been common for many years to employ the rinciple of circulating the body of liqui be tween a reservoir or tank at one point, and a furnace or heater at another point, by means of pipes which provide a continuous circulation from the reservoir through the .heater by expansion and the well known laws of convection, and I make no broa'd claim to this principle. While my invention belongs tothis class of liquid heaters, it is more especlfltlly designed for circulating heavy petrooil and it possesses important and distinctive features of novelty, among which only be mentioned the following: The reservoir 12, which is placed above the furn ce fire box, is era-extensive with the fire box, or of the same ground plan, with the outer edges of the reservoir coincidin and fittin snugly to those of the heating 0 amber be ow, and as the top wall 22 of the fire box is the bottom Wall of the reservoir there is a. direct- Itwill thus be seen thatv transmission of heat by conduction therethrough giving a high and. econon'iical heating ctiiciency, and as said reservoir is formed with dowmvardly projecting

flanges

30, 30, 5 which corresporul in (llHlQnSlOllS to and fit over the edges of the tire box it renders it easy of construction and application, and also detachable when necessary to take it oitf. It. will also b8 380" that the heating chamber 10 is of rectangular elongated shape disposed l'iorizontally and that the heating pipe has a long extension horizontally through the heating chamber and through both ends of the same and back again, which gives an ex tensive heating surface with perfectly straight pipes and brings the T-couplings E14 and clean-out lugs 23 outside of the front end of the eating chamber, where they are easily accessible. The relatively shall-ow liquid reservoir 12 above the heating chamber also gives extensive heating surface along its bottom over which the li. uid has to pass from end to end.

claim and desire to secure by Letters 25 Patent 2- 1. An apparatus for heating liquids by.

continuous circulation from convect1on,com-

rising a tank, a horizontal reetangular eating chamber, a relatively shallow horizontal liquid reservoir laced immediately above the heatin chem er and bein coextensive in groun plan dimensions with the heating chamber, with the outer edges of the reservoir coinciding with those of the heating chamber, a circulating pipe extending from the lower portion of the tank horizon tally through the length of the heating chamber and through the front end of the same and thence back through the heating 4O chamber and its other end and up into one end of the reservoir above the heating chamher, and another circulating pipe extending from the other end of the said reservoir to a the tank for return circulation.

2. An apparatus for heating liquids by continuous circulation -'from convection, comprisiu a tank, a horizontal rectangular heating 0 lanlber, a relatively shallow horiheating chamber, with the outer edges of the resei'\-'oir coii'iridiug with those of the heat ing chamber, a circulating pipe extending from the lower portion of the o k liorizoutally through the length of the, heating chamber and through the front end of the same and thence back through the heating chamber and its other end and up into one end of the reservoir above the heating chamber, another circulating pipe extending from the other end of the said reservoir to the tank for return circulation, and an escape fine from the'heating chamber opening at its lower end into the heating rlnnnl'icr and passing through the reservoir above.

3. An apparatus for heating liquids by continuous circulation from convectiomcom prising a tank, a horizontal rel-t angular heating chamber, a relatively shallow horizontal liquid reservoir placed immediately above the heating chamber and being coextensive in ground plan dimensions w1th the heating chamber, with the outer edges of the. reser-- voir coinciding with those of the heating chamber, a circulating pipe extending from the lower portion of the tank horizontally through the length of the heating chamber and through the front end of the same and thence back through the heating chamber and its other end and pp into one end of the "reservoir above the heating chamber, and

another circulating pipe extending from the other end of the said reservoir to the tank for return circulation, the reservoir above the heating chamber being formed with dmvnwardly projecting flanges along its edges conforming in ground plan to the subjacent h ating chamber and lapping past the upper edg s of the heating chamber. In testimony whereof I ailix my signature in presenc of two witnesses.

DAVID M. DUNLAP. W'i messes:

JOHN E. Aunucimn,

Gnonen M. GLASS.