US962427A - Condenser. - Google Patents

Description

G. M. HARDEN.

GONDENSER. K APPLICATION FILED IBB. 2o, 1909.

Panted Jana 28, i910.

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fz Amann TINTTED STATES PATENT @FFTQE GEORGE IVI. HARDEN, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 'lI-IE PHILA- DELPHIA PIPE BENDING COMPANY, A CORPORATION OIF NEW JERSEY.

CONDENSER.

Specification of Letters Patent.

Application led February 2D, 1909.

Patented J une 28, 1910.

Serial No. 479,198.

To all whom it may concern:

Be it known that I, GEORGE M. HARDEN, a citizen of the United States, residing in the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, havevinvented certain new and useful Improvements in Condensers, of which the following is a specification.

My invention relates to condensers which are exposed to the atmosphere and supplied with cooling liquid for condensing hot gases, vapors, or for other similar purposes.

My invention resides in an atmospheric condenser comprising both preliminary and main condensers, such condensers being formed of circular, elliptical, oval, or other shaped coils, the preliminary and main condenser coils being formed of a continuous tube or pipe having no joints, and the preliminary and main condenser coils being, in fact, one continuous j ointless tube or pipe.

By making the condenser coil or coils, in an atmospheric condenser, continuous and without joints, leakage is prevented and the life of the coil is materially increased, because the eifect is uniform throughout the length of the coil or pipe, there being no unequal or uneven effects at joints. Alternate wetting and drying of jointed coils or pipes contribute materially to shortening the life of the coil or pipe, and by my arrangement, this difficulty is overcome. Furthermore, by using a true coil, in an atmospheric condenser, there is a continuous and equal drainage throughout the entire length of pipe from inlet to outlet, thereby avoiding all pockets of any nature, that is, avoiding any places where condensed liquid or material can stand. By my arrangement, in an atmospheric condenser, continuous and equal drainage is possible while not possible in the zig-zag jointed pipe arrangements heretofore used. And since the condenser coils, preliminary or main, are perfectly uniform and of the same diameters, the cooling liquid strikes all parts uniformly. And since a true coil is employed there is a pitch downwardly which causes the cooling liquid to not only drip from convolution to convolution of the coil, but also allows cooling liquid to run along the coiled pipe.

My invention resides also in an improved sprinkler, particularly adaptable in connection with an atmospheric coil condenser.

My invention resides also in other features hereinafter pointed out and claimed.

For an illustration of some of the forms my invention may take, reference is to be had to the accompanying drawing, in which:

Figure 1 is a perspective view of an atmospheric true coil condenser involving my invention. Fig. 2 is a top plan view of a nest of such condensers. Fig. 3 is a top plan view of a nest of such condensers, the coils being in elongated form.

In Fig. 1, the pipe or header 1 delivers the hot gas, vapor or other material to be condensed or cooled through the valve 2 to the inlet 8 of thel preliminary condenser which comprises the lower convolutions, the last convolution of the preliminary condenser being shown at 4. Between the inlet 3 and the end 4 of the preliminary condenser, the pipe or tube is continuous without any screw-threaded or coupled joints, the exterior and interior of the pipe being substantially smooth throughout, and the coil is uniform in diameter. From the end 4 of the preliminary condenser extends a riser 5 which connects to the top convolution 6 of the main condenser, the last convolution 7 of the main condenser connecting through the valve 8 with the discharge or liquid header 9.

The pipe constituting the main and preliminary condensers, is a continuous jointless one; the riser 5 is integral with the preliminary and main condenser coils, and forms a jointless connection. The preliminary and main condenser coils may be separately made or coiled and then the riser 5 welded to the last convolution 4 of the preliminary condenser and to the first convolution 6 of the main condenser. From the last turn 4 of the preliminary condenser extends a trap pipe 10 to the portion 11 of the last turn of the main condenser, so that any material condensed in the preliminary condenser may flow directly to the liquid or discharge header 9.

The main and preliminary condenser coils are supported by suitable standards 12, the different convolutions being suitably supported by transversely extending pins or bolts. Supported at the top of the standards 12, is a horizontally disposed sprinkler pipe or other duct 13 with which communicate and to which are welded the pipes 14 connecting with the pipe 15 and through the valve 16 with the water supply pipe 17. These pipes 14 being welded to the duct or pipe 13, permit the pipe or duct 13 to remain perfectly symmetrical or true in configuration to correspond exactly with the condenser coils beneath it. If pipe fittings were used at the junction of the pipes 13 and 14 flattened or irregular places would result, with resultant imperfect supply of coolingliquid to' the condenser coils. The duct or pipe 13 is perforated to allow the escape of water, and has preferably a nar row slit 18 in its upper surface through which the cooling water flows. The water then flows over the outside of the duct or pipe 13, and thence drips downwardly over the successive convolutions of the main and preliminary condensers, some of the water also running lengthwise of the condenser coils, since these coils are true coils and have a pitch downwardly. In the gap formed between the duct or pipe 13 and the top of the main condenser, which gap is due to the fact that the duct or pipe 13 is horizontal while the coil of the condenser has a pitch, is supported the drip plate 19 rwhich 1s broadest at the front and gradually narrows down toward the rear. This drip plate is suitably supported, as by clamps 20. Plate 19 directs the cooling water to the top convolution of the main condenser, and

from the top convolution it drips from one convolution to another and also runs longitudinally of the pipe. A nd between the main and preliminary condensers, due to the leading out of the pipes 3 and 7, there is formed a gap in which is placed a further drip plate 21 suitably supported, as by the clamps 22, to a turn of pipe.

In Fig. 2, three concentric condensers of the type herein described are shown, each being provided with a sprinkler pipe or duct 13. The water supply pipe 17 is connected to each of these sprinklers 13 by suitable connections, as, for example, by connections extending downwardly at 45 degrees. The pipes 7 forming the terminals of the three main condensers are bent downwardly and then outwardly as shown and terminate in suitable coupling flanges 23. The pipe 7 of the innermost condenser is bent downwardly between the two innermost condensers, and the pipe 7 of the middle condenser is bent downwardly between the outer and middle condensers. The inlet pipes 3 are each provided with a connecting flange so positioned and directed, that connections 3a to the two inner condensers may extend through the gap corresponding with the gap which is filled by the drip plate 21 in Fig. 1.

In Fig. 3, the arrangement is similar to that in Fig. 2, except that the coils are elongated and not round. Each condenser is again supplied with a sprinkler 13 each having the connecting pipes 14, which all connect to the manifold 24 connectedY to th water supply pipe 17.

In atmospheric condensers heretofore employed, zig-zag connected pipes have been used with return bend couplings at the ends and water dripped over these pipes. Though such an arrangement has been termed a coil, I use such term in its truer sense in connection with coils as herein described.

I believe myself to be the first to use in an atmospheric Ycondenser a continuous coil of jointlesspipe, over which water is passed both by dripping and by flowing along longitudinally of the condenser pipe, with the resultant advantages hereinbefore pointed out.

While the condenser hereinbefore described is suitable yfor condensing gaseous refrigerating agents, such as ammonia, it is to be understood that it is useful for other purposes as well. And `where used for condensing ammonia or other gas such as used in refrigeration, the condenser pipe being coiled and having no pockets, as occur in the zig-zag arrangement, a minimum of refrigerating agent is required for a plant of given output or capacity.

The preliminary and main condensersare shown in Figs. 1 and 2 as circular in form', the circles being of the same diameter. But whether circular, elliptical, or of other shapes, the main and preliminary condensers are made of the same size and shape so that one may bedisposed directly above the other. And it is to be understood that when the main and preliminary condensers are referred to in the claims as being of the same diameter, such language does not refer only to the case where the main and preliminaryI condenser coils are circular in shape, but extends to the other cases enumerated.

What I claim is:

1. In a condenser, a preliminary and a main condenser, the preliminary and main condensers being of the same diameter and disposed one above the other and constituted of a continuous jointless helical coil of pipe, means for supporting said preliminary and main condensers in the open atmosphere, and means for directing water upon the uppermost convolutions, whereby water drips from convolution to convolution and ,also flows along the helical pipe.

2. In a condenser, preliminary and main condensers, said preliminary and main condensers each being of the same diameter and formed of a continuous jointless helical coil of pipe, a connection between said preliminary and main condensers forming said preliminary and main condensercoils into a single continuous jointless pipe, means for supporting said preliminary and main condenser coils in the open atmosphere, and

'means for directing water upon the uppermost convolutions, whereby water drips from main to preliminary condensers and from convolution to convolution and also flows along the helical pipe.

3. In a condenser, preliminary and main condenser coils open to the atmosphere; said preliminary and main condenser coils being disposed one above the other and formed of a continuous jointless helical coil of pipe, a drip plate for directing the water upon said uppermost convolution, means for directing water upon said drip plate, and a drip plate between the main and preliminary condenser coils.

4. In a condenser, a helically coiled condenser pipe having a downward pitch, means for supporting said pipe in the open atmosphere, a sprinkler comprising a horizontal perforated tube or duct disposed above said coil, and a drip plate conforming to the downward pitch of said condenser pipe disposed between said tube or duct and the top convolution of said coil.

5. In a condenser, a nest of helical coils open to the atmosphere, each coil consisting of main and preliminary jointless condenser coils of the same diameter, gaps between the preliminary and main coils of the outer condenser coils of the nest, connection to the inner condenser coils extending through said gaps, and a sprinkler for each coil of the nest.

In testimony whereof I have hereunto aliiXed my signature in the presence of the two subscribing witnesses.

GEORGE M. HARDEN.

Witnesses:

ELEANOR T. MCCALL, ANNA E. STEINBooK.

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