US1758495A - Condenser construction - Google Patents

Description

May 13, 1930. -c. AfBOYD 1,758,495

CONDENSER COIISTRUCTION Filed April 18. 1925 2 Sheets-Sheet 1 1 .\'VEN TOR.

Car/es Boyd BY $07: t 1TTORNE)5.

May 13, 1930. c A. BOYD CONDENSER CONSTRUCTION 2 Sheets-Sheet '2 Filed April 18. 1925 IN VEN TOR. ('22 arias .Z Ba

ATTORNEY UNITED STATES PATE'NT OFFICE CHARLES I BOYID OF CLEVELAND, OHIO, ASSIGNOR TO THE OIL CONSERVATION ENGI- NEERING COMPANY, OF CLEVELAND, OHIO, A CORPO RATIONOF OHIO CONDENSER CONSTRUCTION Application filed April is, 1925. Serial 1%. 24,0a1.

The present invention relates to heat exchangers and more particularly to the construction of heatv exchanger or condenser units which areparticularly adapted for s-cooling the condensing vapors and for cooling the condensate. The present-type of condenser units provides a large cooling surface both interiorly and exteriorly, the walls of the unit being formed in convolutions so as to provide as great a cooling surface as possible but the construction is such as to reduce the accumulation of dirt or the like in. the unit and toallow for the easy cleaning thereof. To the accomplishment of the foregoing and related ends, said invention,

then, consists 6f the means hereinafter fully described and particularly pointed out in the claims.

The annexeddrawings and the following 2 description set forth in detail certain mech- 1 ;,Fig. 5 is a view similar to Fig. 1 but showing a modified form of unit; Fig. 6 is an end elevational view of the form shown in Fig. 5; and Figs. 7 and 8 are sectional views on the lines 7 7 and 8-8 respectively of Fig. 5.

In the preferred form as shown in Fig. 1,

the present heat exchangercbnsists of a hollow unit, preferably of casting or a formed pipe having end flanges 2 or other suitable connecting type of ends by which it may be attached to the usual headers or' connecting pipes'or other units. The body of the unit has a longitudinal passageway 4 therethrough and the unit is formed with a series of convolutions 3 which are in the form of a sub-' stantially continuous helix. The center line a-a of the interiorzof the helix is ofiset above the center line 5-6 of the passage 4 and thus the convolutions ofthe helix terminate tangent to the bottom of the unit forming a substantially smooth bottom floor 6 for the condensed liquid to flow over.

The convolutions are each provided on the outside with a rib 7 or like cooling flange .and these ribs form a continuous external helix around the casing unit. Thus the passage 4 from the ends provides a circular opening through the unit with a series of helically arranged grooves which increase the cooling surface but which may easily be cleaned as a brush or the like centered on the line w-a will follow the convolutions as well as clean the entire interior of the unit.

In the form shown in Figs. '5 to 8, the body of the unit is rovided with the end flanges 10 and in this orm the center .line of the con-' volutions 11 or helix is the same as the center line of the passage 12. v A rib 13,is provided on the outside of the convolutions to increase the coolin surface. In this form a. wire brush or the, ike may be forced in and the unit cleaned but the unit does not provide the smooth bottom or floor for the flow of liquid. However, the unit may be rotated on itsaxisso as to change the top and bottom and this is advantageous'under certain conditions where the vapors being condensed at the top of the unit and by changing the position about the center axis, the corrosion' can be equalized and the unit used the longest possible time.

. Other-modes'of applying the principle of my invention may be employed instead of the one explained, change -bemg made as regardsthe mechanism ,herein disclosed, provided theImeans stated b any of the 'following claims/or the equiva em; of such stated cause corrosion. The corrosion is most rapid spaced parallel lines so as to make the convolutions merge with the wallrof the casing along one'side of the casing.

2. A condenser unit consisting of a hollow casting having a substantially continuous helica groove forming a series of convolutions exteriorly and interiorly of the casting, the axis of the hollow passage and the exls of the helical convolutions lying on spaced parallel lines so as to make the convolutionsmerge with the wallof the casing along the bottom of the casing thus forming a substantially flat floor for the passage of liquid.

Signed by me this 15th day of A ril, 1925.

- CHARLES A. OYD.

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