US604217A - Hot-blast radiator - Google Patents

Description

Patented May 17,1898.

G. I. R'OOKWOOD. HOT BLAST RADIATOR (No Model.)

NITED STATES GEORGE I. ROCKVVOOD, OF WORCESTER, MASSACHUSETTS.

HOT-BLAST RADIATO R.

SPECIFICATION forming part of Letters latent No. 604,217, dated May 17, 1898.

Application filed May 28, 1897. Serial No. 638,505. (No model.)

T0 00% whom it may concern.-

Be it known that I, GEORGE I. RocKwooD, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Hot-Blast Radiators, of which the following is a specification, accompanied by drawings forming a part of the same, in which Figure 1 is a side elevation of a hot-blast radiator embodying my invention. Fig. 2 is an end elevation of the same. Fig. 3is a plan view, partly shown in section; and Fig. 4 is a view in side elevation, on a larger scale, of a few sections of the radiator with their end caps removed.

Similar letters refer to similar parts in the different figures.

The object of my improvement is to increase the efficiency of a hot-blast radiator, and I attain this object by means of the construction and arrangement of the parts as hereinafter set forth, and described in the annexed claims.

The radiator shown in the accompanying drawings comprises a series of headers each consisting of a cast-metal shell A, divided by a longitudinal vertical partition A into two chambers A and A connected with each other by small vertical steam-pipes B, which rise from the chambers A and A and are connected at their upper ends by the returnfittings B,said pipes forming a radiating-surface as in radiators of this class now in common use. The headers A A are alternately connected at opposite ends of the radiator by means of end caps 0, consisting of shells'attached to the ends of theheaders and communicating with the chambers inclosed therein, whereby the chamber A of the first header communicates with the chamber A of the second header and chamber A of the second with chamber A of the third header, and so on throughout the series. Steam is supplied by means of the supply-pipe D to chamber A of the first header, thence through the pipes 13 into the adjacent chamber A and from this chamber steam passes to chamber A of the next header through one of the end caps O, the circulation of steam from one header to the next succeeding header being secured by means of the end-caps G, which are preferably arranged alternately on opposite ends of the radiator, and the circulation from one chamber to the next in each header is secured by means of the pipes 13. The chamber A of the last header is provided with a dischargepipe E, through which the air is exhausted from the radiator.

The water of condensation formed in the Vertical pipes B flows into the headers A, and is removed therefrom through drip-pipes F, which communicate with the headers and end caps on one side of the radiatorand conduct the water of condensation downward into a common pipe G,having its end G closed and communicating at its opposite end with the discharge-pipe E. By this simple arrangement the water which collects in anyheader escapes freely, but the passage of steam is effectually prevented,as the pipe G and all the drip-pipes F F are filled with water up to the level, or thereabout, of the bottom of the escape-pipe E, thus forming an effective water seal to the drip-pipe F at each of the headers A.

The whole radiator is preferably inclined in the direction of the corner having the discharge-pipe E, so as to facilitate the drainage of water from all the headers to this point,and it is also inclined slightly toward the side having the drip-pipe F.

The steam admitted to the chamber A of the first header is distributed at once through out the entire length of the chamber, so that it will pass equally through each of the vertical pipes B into the chamber A causing the radiating-surface of the pipes B in the first header to be equally and uniformly heated; and in order to secure a more uniform distribution of steam in the chamber A of the first header I preferably connect the steam-pipe D with the header at a slight angle to the axisof the headerfso that the opening between the steam-pipe and the chamber A is much greater than the area of the cross section of the pipe and extends from one end of the header to its central portion. The arrangement of the end cup 0 alternately at opposite ends of the headers also facilitates the distribution of steam throughout the entire length of the headers, so that a uniform and equal flow of steam is practically secured through all the vertical pipes Bin each successive header. As all the drip-pipes F are effectually sealed by Water when the radiator is in use the steam is caused to flow from one end to the other uniformly and equally through all the series of vertical pipes 13, connecting the adjacent chambers in each of the headers, thereby causing all the radiating-surface of the vertical pipes in each header to be uniformly heated.

The distribution of heat to all the radiating-surfaces causes the air which passes over them to become uniformly heated.

When the air-pump is applied to the discharge-pipe E to remove the air from the radiator, the steam is prevented from making a short circuit through the drip-pipes into the partial vacuum produced by the air-pump, thereby obviating the back pressure which would retard the flow of steam through the pipes B.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination of a series of headers inclosing steam-chambers arranged in pairs, steam pipes connecting the chambers in each pair, and disposed above the level of said chambers, with a steam-chamber in one pair communicating with a steam-chamber in the next adjacent pair, drip-pipes leading downward from each of said chambers discharging into a common pipe or header, a pipe or header having its discharge at a higher level than the lowest point of said drip-pipes, and a steam-pipe and a dischargepipe at opposite ends of said series of headers, substantially as described.

2. The combination of a series of headers inclosing steam-chambers and arranged in pairs, a steam-pipe by which steam is admitted to the first in said series, radiating-pipes connecting said chambers in series, a discharge-pipe by which air is withdrawn from the last in said series, and drip-pipes leading downward from each of said chambers and provided with a water seal, substantially as described.

3. The combination of a series of headers inclosing steam-chambers connected alternately at opposite ends of said headers, steampipes extending upward from each alternate chamber and returning to the next adjacent chamber, and drip-pipes connecting each of said chambers with a common discharge-pipe, a discharge-pipe receiving said drip-pipes and having its discharge at a higher level, a steam-pipe by which steam is admitted to the first header and a discharge-pipe by which air is withdrawn from the last header in said series, substantially as described.

4. The combination of a series of headers inclosing steam chambers, radiating pipes connecting said chambers, a steam-pipe admitting steam to the first header, a dischargepipe through which air is withdrawn from the last header, drip-pipes connecting each of said headers wit-h a common pipe or header at a lower level, and a' pipe or header communicating with said air-discharge pipe at a higher level, substantially as described.

5. The combination of a series of headers A, each inclosing a pair of steam-chambers A and A steam-pipes B, connecting the chambers in each of said headers, passages connecting one of the chambers in said headers with a chamber in the adjacent header, drip-pipes F leading downward to a common water-discharge pipe G, an air-discharge pipe E communicating with the last chamber in the series and also with the water-discharge pipe G and a steam-pipe through which steam is admitted to the first chamber in the series, substantially as described.

Dated this 24th day of May, 1897.

GEORGE I. ROCKWVOOD.

VVit-nesses:

RUFUS B. FOWLER, M. 0. PRICE.

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