US2002827A - Rotary compressor - Google Patents

Description

y 1935- V J. J. MORCH 4 2,002,827

% ROTARY COMPRESSOR Filed Feb. 19, 1954 2 Sheets-Sheet 1 Inventor l 1 March.

May28, 1935. J MQRCH ROTARY'COMPRESSOR Filed Feb. 19, 1934 2 Sheets-Sheet 2 Inventor lldh /Lrch.

Patented May 28', 1935 UNITED"STATE-S ROTARY COMPRESSOR Jacob J. Morch, PcrtCredit, Ontario, Canada Application February 19, 1934, Serial No. 711,929

This. invention relates to mechanism particularly adapted for use as a rotary compressor used to deliver compressed air or a compressed gaseous.

fuel mixtureto means for utilizing itin. the generation of power, and my object is to devise simple and efficient means for this purpose involving no reciprocating parts.

I attain my object by means of the constructions hereinafter described and illustrated in the accompanying drawings in which Fig. l is a longitudinal section of my'improved compressor; 1 v

Fig. 2. a sectional elevationshowing the intake port;

Fig. 3, a section on theline 3f3 in Fig. 1;

Fig. 4, a plan of the underside. of the ring I9 in Fig. 1; i

Fig. 5, a side elevation of the ring I9 in Fig.

1; and

Fig. 6, an elevation of the adjusting meansbetween the stationary casing and the shaft. 7

Intheqdrawings like. numerals of reference indicate corresponding parts in the different figures.

Referring to the drawings, I is a-hollow stationary shaft which is mounted in a stationary casing 2. Rotatably mounted on the shaft is the rotary casing 3. This casing is formed with a hub 4 in which the reduced .end of the shaft I is journaled and which in turn is journaled within the sleeve 5 of the stationary casing.

The shaft I is formed with an eccentric portion 6 of reduced diameter on which is rotatably mounted the cylindrical piston disk I which at one portion of its periphery fits close to the in-. ner periphery of the rotary casing 3. This piston disk has a plurality of cylindrical recesses formed therein on axes parallelto the axis of the shaft in which recesses are journaled the spools 9 each having an arc of its periphery exposed at the periphery of the disk.

Each spool has a pocket I0 formed therein adapted to receive a vane II hinged within the rim I2 of the rotary casing. Preferably I employ for this purpose a hollow journal I3 having a bearing in the rim. The hollow communicates with a port I4 formed through one face of the vane.

Intermediate of the vanes a corresponding number of radial passages I5 are formed in the piston disk adapted to successively communicate with a port I6 formed in the part 6 of the hollow shaft.

One end of the hollow journal of each vane z'olaim (crass-14s) II is in communication with a radialpassage I1 formed in one'end of the rotary casing 3.

Radial passages 2| in the stationary casing are in communication with an annular passage I8 in a ring it mounted on the stationary casing 5 adjacent the shaft I, which ring bearsagainst the rotary casing. This ring IS has a port formed in its face adjacent the rotary casing which, as the casing rotates comes successively into communication with the axially directed inner ends of the passages ll. Thus every time a passage H is incommunication with the port 20 any fluid passing therefrom will flow to all the passages 2I.

The ring I9 is held from rotation by the pins '22 connected therewith and entering recesses in the hub of the stationary casing '2. In each recess is positioned a thimble 23 having a hole in its end in which thepinfitsr A coil spring 24' fitted between thethimble and the ring I9 serves to hold the latter tightly. against the hub of the rotary casing 3 in which the inner ends of the passages I! are formed.

The passages 2i in the stationary casing communicate respectively with ports 25 formed in the rim 26 of the stationary casing 2 and opening into the annular chamber 33 provided with the outlets 31.

To make an air tight fit between the contacting sides of the'rotary casing 3 and the piston disk I, I provide a plate 30 at one side thereof bearing against the side of the piston diskand having a hub 3i fitting in an annular recess in the hub 4. A coil spring or springs 32 fitted in the recess press the plate 30 against the disk I.

It is desirable to be able to vary the angular position of the stationary casing with its passages and ports relative to the compressor formed by the rotary casing 3 and piston disk I. For this purpose I secure to the end of the stationary shaft I a segmental worm gear 38. With this meshes a worm 39 journaled on the hub of the stationary casing 2.

Other specific details are unimportant and may be varied considerably without departing from the spirit of my invention.

The end of the hollow shaft may be connected with any suitable carburettor if a gaseous fuel mixture is to be compressed or may simply open to the atmosphere.

The mode of operation is substantially as follows assuming the rotary parts are driven in the direction of the arrow in Fig. 1 as by a pulley 36 secured to the shaft 4. As the piston disk and rotary casing 3 rotate about the hollow shaft I, 55

the radial passages l are successively brought into alinement with the inlet port I6. Air, or fuel mixture, can then flow into the space between two vanes l I, which space constantly enlarges till the two vanes in question reach a position in which they are equidistant from the point of contact of the piston disk with the inner periphery of the rotary casing. The particular passage i5, through which the fluid has been-flowing is then out of communication with the inlet port and compression begins through the port I4 in the forward face of the rearward of the vanes between which the fluid is trapped and continues until the corresponding radial passage ll comes into communication with the port 28 in the ring I9.

Immediately the compressed fluid flows from the compressor through the passage H in communication with the port 20, through the port and intothe groove I8, through the groove to each of the radial passages 2| and thence to the ports 25, which are in communication with the chamber 33 from which the compressed fluid may be discharged for use.

From the above description it will be seen that I have devised a rotary compressor in which all the parts are rotary and from which a substantially even and constant flow of compressed gaseous fluid may be obtained.

What I claim as my invention is:

1. A rotary compressor comprising a rotary cylindrical casing; a cylindrical piston disk rotatably mounted in and eccentric to the casing; a plurality of vanes hingedly connected with the internal periphery of the cylindrical casing; a plurality of spools journaled in the piston disk on axes parallel to that of the disk, each having an arc of its periphery disclosed at the periphery of the disk and each disk having a pocket slidably receiving one of the vanes; a stationary hollow shaft on which the piston disk rotates, the shaft having a radial port therein and the piston disk aooasev radial inlet passages adapted successively to communicate with said port, the said vanes each having an exit passage extending through one face thereof, and through its hinge in a direction parallel to its axis; radial conduits in the casing communicating at their ,outer ends with said passages; a stationary conduit for compressed air; and a stationary part concentric with the rotary casing and having a chamber therein with which the stationary conduit communicates, said chamber having a port therein with which the inner ends of the radial conduits successively communicate.

2. A rotary compressor comprising a rotary cylindrical casing; a cylindrical piston disk rotatably mounted in and eccentric tothe casing; a plurality of vanes hingedly connected with the internal periphery of the cylindrical casing; a plurality of spools journaled in the piston disk on axes parallel to that of the disk, each having an arc of its periphery disclosed at the periphery of the disk and each disk having a pocket slidably receiving one of the vanes; a stationary hollow shaft on which the piston disk rotates, the shaft having a radial port therein and the piston disk radial inlet passages adapted successively to communicate with said port, the said vanes each having an exit passage extending through one face thereof, and through its hinge in a direction parallel to its axis; radial conduits in the casing communicating at their outer ends with said passages; a stationary radial conduit for compressed air; a stationary part concentric with the rotary casing and having a chamber therein with which the stationary radial conduit communicates, said chamber having a port therein With which the inner ends of the radial casing conduits successively communicate; and an annular chamber exterior to the rotary casing and with which the stationary radial conduit connects.

JACOB J. MORCH.

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