US985161A - Cooling apparatus for turbo-compressors. - Google Patents

Description

W. GRN.

COOLING APPARATUS FOB. TURBO GOMPRESSORS.

APPLIGATION FILED JUNE z2, 1910.

985,161. Patented Feb.`28,1911.

lll/1114111 through chambers provided in thewal'ls of' "UNITED STATES PATENT onirica.

WILLIBALD GRUN, or FRANxFoRT-oN-THE-MAIN, GERMANY.

To all whom it may concern:

Be it known that- I, WILLIBALD chief engineer, a citizen of the German Empire, and a resident of Testendstrasse 81, F rankfortoii-the-Main, in the Kingdom of Irussia, Germany, have invented certain new and useful Improvements in Cooling Apparatus for Turbo-Compressors; and I do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in cooling apparatus for turbo-compressorsor rotary blade compressors. And the object of the improvements is to provide cooling apparatus .whereby the cooling -medium and the cooling surfaces arel utilized as completely as possible. In turbocompressors now in use Vthe fluid has `been cooled in the successive stages of the compressor by circulating af coolingmedium the compressors. In turbo-compressors it is of the utmost importance to keep the teniperature ofthe iiuid subjected to the compressing operation as low as possible.` lHowever, the space for'providing cooling means in the compressor is exceedingly small. Therefore in order to sufficiently cool the iuid, the coolingmeans provided between' the successive stages of the compressor must be as effective as possible. In cooling apparatus now in .use the `cooling mediuin flows in a direction parallel to the cooling surface. Now I have discovered, that the cooling effeet can be considerably increased by causing the cooling medium to strike against the cooling surfaces as often as possible 'in a perpendicular or substantially perpendicular direction, because thereby the transmission of the temperature of the cooling medium to the cooling surfaces is increased. Therefore my invention consists in so arranging the cooling d evices for the turbocompressor, that within thecomparatively small space the cooling medium strikes sev# eral times against the cooling surfaces in a substantially perpendicular direction'.

For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawing in which the same letters of references have GRUN,

COOLINGAPPRETUS FOR TURBO-COMPRESSOR.

Specication of Letters Patent. Patented Feb. 28,191.1. Application filed June 22, 1910. Serial No. 568,249. i

sponding parts.

In said drawings-Figure 1, is a horizontal cross-section of the cooling apparatus ltaken on the line 1-1 of Fig. 2, Fig. 2, is a sectionof the apparatus taken on the broken line 2-2of Fig. l, and Fig. 3, is a horizontal cross-section similar to that -of Fig. l and showing a modification of the apparatus.

In the example shown the lcooling apparatus consists of two flat! annular hollow bodies a and b which communicate with each other through intermediate chambers c arranged perpendicularly thereto. The cooling medium is admitted for example to the chamber provided by the booy 7J through an aperture d formed in the cylindrical wall been used-in all the views to indicate correof the said body, and it is conducted in the` direction of the arrow through the intermediate chamber c until it strikesperpendicularly against the coolingl wall of the inner hollow body a. In a similar way the cooling 'medium passes through the first intermediate chambers successively from the chamber a to the chamber b and from the chamber b to the chamber a. In the example illustrated the effect of the cooling medium is further increased by dividing the intermediate chambers c by partitions f into two sections or passages c1 and'cz, and the 4cooling medium flows as follows: The cooling mediuml is admittedl for instance through the aperture d of the cylindrical wall of the outer hollow body b and into the chamber e1 of the latter, flows through the inner part c1 of the .intermediate lchamber c and into the chamber g1 `of the inner hollow body a, and is admitted through the part c2 of the intermediate chamber cinto the chamber c2 of the body I). ,From thence the cooling medium iows through the inner partci of the next intermediate chamber c and i'ntothe chamber g2 of the body a, and'it passes through the part c2 of the adjacent .intermediate chamber c and intojthe chamber c3 of the body Z2, and so on, until it is discharged through'the opening h' of the hollow body Z). Thev cooling mediuml is therefore always conducted through the sec-` l tions of .the intermediate chambers c in .0pposite directions, so that it is twice thrown against' the cooling surfaces in a perpendicular direction. The successive sections -ably' subdivided' by radial partitions z' in l1f cleaning lapertures are exclusively such a way, that the cooling mediumvlows through the chambers thus'provided along a serpentinel path.- particularly advantageous, because only a limitednuinber of intermediate chambers c can be arranged between the hollow bodies a and because otherwise the .cross-sectional area of the passages for the air would be too small.

Byl the arrangement described, with the largest possible number of intermediate chambers c'tlie' direction of the flow of the cooling'medium can twiceas often be re-A versed as compared with hollow intermediate'. chambers which are not provided with partitions. The chambers cvinay be further subdivided byv providing two or more partitions f in each chamber o. Finally in order to increase the cooling efect ribs may be provided between t-lie chambers c.

As the hollow bodies a. and I) are rigidly connected with each other by the intermediate chambers c the chambers traversed by 'the cooling medium can not easily be cleaned,

rovided in the -cylindrical outer walls ofpthe hollow` bodies, as was done in compressors of this class heretofore in use. However, such v cleaning should be `frequently done, if unclean cooling water is us'ed.

A feature of my invention consists 1n so 4 arranging the cooling apparatus, that the chambers traversed by the cooling liquid are more easily accessible. For this purpose the disk shaped outer wall of the hollow body a (Fig. l), or the outer wall of the hollow body b (Fig. 3), or both of them, are constructed in the form of substantially cup shaped disks provided with covers or lids "m and n respectively which, without increas- .ing vthe size of the cooling device, are connected with the hollow bodies by means of screw bolts o, or the ,like which can easily be loosened.. After removing one of the covers or lids m or n the spaces traversed by the cooling medium are `sufficiently accessible to be cleaned by means o'f a simple tool. The annular chamber 'of the hollow body which is not provided can easily be cleaned from the side and through apertures;- p provided in the saidf boy. ,The arrangement of the covers or lids m and 'n is advantageous also in this respect that in the manufacture of the cooling This arrangement is with acover or lidnular chambers subdivided into lsections,

and connecting walls between said bodies' n'oviding intermediate which each of the sectional chambers of one of sai-d hollow bodies communicates with two adjacent sectional chainbers'of the other .one of said hollow bodes.

2. A cooling apparatus, comprising in combination two annular bodies arranged adja- 'ceiit to each other and formed with annular chambers subdivided into sections, connecting walls between said bodies providing intermediate chambers, and partitions dividing said intermediate chambers into -passages, two passages of each intermediate chamber communicating with the 4same chamber of one body and with successive chambers of the other body.

3. A cooling apparatus, comprising two annular bodies arranged adjacent to each other and formed with annular chambers subdivided into sections, connecting walls between said bodies providing intermediate chambers through which each of the sectional chambers of one of said hollow bodies ecm-A inuiiicates with twqadjacent sectional cha mbers of the other one of said hollow bodies,

and ribs provided between said connecting walls and connecting the said hollow bodies.

4. A cooling apparatus comprising a body formed with `an annular chamber, au annular cup shaped disk arranged adjacent to said body and closed at its outside bv a cover so as to provide an annular chamber, the chambers provided by said hollow body and cup shaped disk and its cover being divided by partition walls into sections, and connecting walls arranged between said bodies forming intermediate chambers through which each of the sections of one of said annular chambers vcommunicates with two adjacent sections of the other one of said 'annular chambers.

In testimony whereof I hereunto affix nii' signature in the presence of two witnesses. 'VILLIBALD GRUN.

Witnessesz- HENRY HAsrnR,

WOLDEMAR HAUr'r.

chambers throughy

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