US1488580A - Rotary compressor - Google Patents

Description

April 1l ,f 1924;

|-:.4 WILSON ROTARY COMPRES SOR Original Filed Nov. l5 1920 2l Sheets-Sh-eet 1 Apri- 1, 1924; Y 1,488,580

. n E. WILSON ROTARY COMPRESSOR original Filed Nov] 15, 1920v 2 sheets-sheet 2 Patented Apr. 1, 1924. l UNITED STATE-s PATENT OFFICE.

EDWARD WILSON, OF ST. LOUIS, vMIISSOURI, ASSIGNOR T0 WILSON ENGINEERING COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

ROTARY COMPRESSOR.

Application led November 15, 1920, Serial No. 424,084. Renewed July 14, 1923.

To allwhom t wwyconcem:

Be it known that I, EDWARD W'ILsoN, a citizen of the United States, residing at St. Louis, Missouri, have inventednew and useful Improvements in Rotary Compressors, of which the following is a specification.

This invention relates to rotary compressors, and consists in the novelV construction hereinatter disclosed.

An object of the invention is to provide a compressor having a continuously operating rotor .composed of a cylinder and piston, with means whereby a relative oscillating movement between the piston and cylinder is effected resulting in the ingress, com- .pression and egress of volumes of air or gas in the compression chambers.

Another object of the invention vis to provide a rotary compressor of the class .described, including e'ective means for accomplishing-the oscillating motion between thecylinder and piston, withv provision for mounting the moving parts so as to prevent undue vibration or wear on the parts;

Another object of the invention is tov provide in an apparatus of the class described suitable means for the induction, egress and' control of the air or gas passing to and from the compression chambers.

Another ob]ect of the invention is to provide in an apparatus of the class described an improved form of sealing heads for the cylinder, whereby the escape of preure from the compression chambers' is minimized.

Another object of the invention is to rovide an -apparatus of the class descri ed,

wherein -the lateral stresses, due to the difconstruction.

ference in pressure Aon the rotor bearings, are ehminated by balanclng the pressure generated within the compreion chambers Fig. 4 is a sectional view through a portion of the apparatus taken substantially on the line 4-4 of Fig. 2. p

Fig. 5 is a fragmentary view of a part of 'the apparatus :illustra-ting particularly a trated in the drawings the apparatus, is

shown as including a main central casting havlng abase 1 which supports an inner cylin'drical'housing 2 and an outer housing'3,

there being a space between the walls of the housingsf2 and 3 forming a chamber 4 for -thereception of a Huid, thus providing a water jacket forcooling the apparatus.

casting and is preferably formed with a tongue and groove joint, sealed by a gasket 6. Ihe head member has a lateral extension comprising spaced walls 7 and 8 forming a chamber 9 therebetween for the reception of a cooling fluid. The end ofthe extension terminates in acircular ange 10 t0 y,which is bolted a head piece comprising an outer member 11 and an inner ange 12 joined together and formed integrally/with arms 13, the flanges 10 and 12 being secured together bybolts.

The opposite end of the central castin supports a head piece 14 that is bolted directly to the central castin the joint between the two preferablyeing a tongue and groove connection sealed byl a gasket 15. Extending from the head piece 14 is a bellshaped casting 16\ that terminates in a cylindrical extremity 17 of less diameter. The bell-shaped casting 16 constitu-tes a ,housing forthemechanism for the oscillation of thecylinder' and the piston, and the cy*- lindrical i extension constitutes a support for the bearings of a 'shaftv as will be described hereinafter.

It will, of course, be understood that while the details of .n the housing have been speciicallv described, that it is not intended to indicate that the specific construction of the housing as shown' is essential, but the housing may be formed in any convenient A head member 5 is bolted t0 the central Lacasse "cludes anintakepipe 54 in the left extensure from either side of the lantern 55' which constitutes a separator in the opening of the extension of the 4housing. From the intake conduit 54 the airv passes through slots vin the lantern and into a conduit 58 formed by a cavity in the shaft 18 through opem'n 59v through the walls of the shaft'locat within the lantern-,55. 'lhe cavity in the shaft 18 'extends' to a point ,within the piston sectors of the shaft through which there are slots 60 that com municate with transverse conduits 61 in the piston sectors. The ends of the conduits 61 discharge at the edge of the piston sectors and are controlled by outwardly opening disc valves 62 that communicate with con` duits 63 leading into the compression chambers. The discharge conduits areformed in the sectors 26 ofthe cylinder and include similarly formed conduits 64 controlled by i sion chambers within the cylinder.

inwardly opening disc valves 65. The conduits 64'discharge intothe space between the cylinder and the housing, there bein a discharge paage 66 extending from t is chamber between the cylinder and the main body of the housing.

` From the foregoing the operation of the the combination with a housing, of a main apparatus will be understood to lbe as follows: The airis drawn into the compression chambers from the inlet passage 54, through the passages as described, into the comp'lrelsf' e shaft 18'is revolved at a constant speed and the cylinder through Lthe crank connections is oscillated with respect to the iston sectoi's, so that on each rotation o the shaft the piston sectors will traverse the space between the sectors 26 carried by the -c linder, thus compressing the contents o the compression chambers, the compressed airl 4or gas being forced out ofj the compression chambers at the end of the stroke into the y chamber between the cylinder and the housing from whence it is discharged throu h the discharge passage 66. The length of t e stroke of the piston is determined by the degree of'eccentricity of the shafts 18 and 41.

It will be noted that theentire apparatus is balancedH as'to pressure and that it is thoroughly sealed against loss of pressure at any point. It will, likewise, be noted that provision has been made to equalize the wear rotary and draggin motion, due to the pinin-slot connection tween them and the heads of thecylinder.

While I have illustrated and particularly described the apparatus asl an air com pressor it will, of course, be obvious that the same combination of parts may be utilized as a motor and that power may be delveloped by reversing the laction from that described so as to develop power in place of compressing air or gas.

I am aware that numerous features of the construction may be changed without departure from the spiritand scope of the'invention. I do not limit. myself, therefore, to the exact construction shown and described, but what I claim and desire to sef cure by Letters Patent, is

1. In an apparatus of the class described, the combination with a housing, of a` revoluble cylinder mounted within the housing, a piston mounted within the cylinder, a

Vdrive shaft, and mechanismfor impartingV an oscillating motion between the piston and the cylinder from a continuous rotation vof the drive shaft.

2. In an apparatus of the class described, a housing, a rcvoluble cylinder mounted within the housing, said cylinder having internal sectors, a main shaft, piston sectors on the main shaft arranged to move within the chambers formed between thesectors on the cylinder, and mechanism intermediate the main shaft and the cylinder whereby an oscillatin motion b etwee'n the pistons and the cylin er is imparted from .a continuous rotation of the main shaft.

3. In an apparatus of the class described,

cylinder extending between the pistons, and

mechanism driven by the main shaft for imlll) parting an oscillating motion between the vcylinder and pistons from a continuous rotation of themain shaft.

' 4. In an apparatus of the class described, th@ combination with a housin of a main shaft, ball bearings fore'revolu ly support-v ing the main shaft, a cylinder revolubly su ported in ball bearings with respect to t e main shaft, inwardly extending sectors on the cylinder constituting partitions forming compression chambers, lpistons carried by the main shaft and arranged to operate within the com ression chambers, and mechanism interme iate the main shaft and the cylinder whereby an oscillatinginotion is imparted to the cylinder with respect to the pistons from a continuous :rotation of the main shaft:

5. In an apparatus of the. class described, the combination with a housing, of a main lid in which the pistons operate, floating heads flatin heads and the cylinder whereby a relati e rotary movement between the heads and cylinder is permitted, means for admitting and exhausting pressure from the compression chambers, and driving connections intermediate the main shaft and the cylinder whereby an oscillating motion is Vimparted to the cylinder with respect to the pistons from a continuous rotation of the main shaft.

6. In an apparatus of the class described, the combination with a housing, of a main shaft revolubly supported therein, piston sectors carried by the main shaft, an independently revoluble cylinder havin inwardly extending -sector partition wal extending intermediate the pistons, a ,crank for tl; cylinder, connections between the arm carried by the main shaft, an eccentrically mounted disc in respect of the main shaft, link connections between the disc and the cylinder, and connections between vthe crank arm and said disc.

7; In an apparatus of the class described, a housing, a main shaft revolubly supported in the housing, oppositely disposedpiston sectors carried by the main shaft, a cylinder independently movable with respect to the main shaft having sector partition walls extending between the pistons, a revoluble element connected with the cylinder, a revoluble member mounted to revolve on an axis eccentric with respect tothe axis of the main shaft, an arm carried by the main shaftand pivotally connected with4 said revoluble member, and link connections between said revoluble member and the revoluble element connected with the pistons whereby an oscillatingmotionv is imparted tothe cylinder in respect of the pistons by continuous rotation of the main shaft. J

8. In an apparatus of the class described,

sa revoluble cylinder, a main shaft, piston sectors carried by the main shaft, sectors carried by the cylinder intermediate the pistons, air conduit passages communicating with the space between the sectors on the cylinder, controlling valves in said passages, air conducting conduits in the sectors carried by the cylinder, said conduits communieating with the space exterior of the cylinder, and air controlling valves in said conduits.

9. In 'an apparatus of the class described, the combination with a housing, of a main shaft supported within the housing, acylinder of less diameter than the housing revolubly supported in respect of the main shaft, inwardly extending sectors carried by the incasso cylinder, pistons carried by the main shaft i operating in the space between the sectors, inlet conduits communicatin with the space between the sectors carried y the cylinder,

mental compression chambers formed therein,sector's carried by the main shaft and 0perating in `said compression chambers, a

housing spaced from the cylinder, air conduits leading from the exterior of the-housing through the main shaft and discharging through the pistons to the compression chambers, conduits leading from the cylin-s der to the space intermediate the cylinder and the housing, and controlling valveswhereby pressure is admitted and exhausted from thecompression chambers.

11. ln an apparatus of the class described, a rbtor' having formed therein, a movable wall rotatably mounted in the rotor and operating in the compression chambers, a drive shaft, means for imparting an oscillating motion between compression chambers the wall andthe compression chambers`- by the continuous rotation of the drive shaft in one direction, and means'for controlling the lpassageof air to and from said compression chambers.

12. In an apparatus of the class described, including a rotor, a compression chamber in the rotor having a relativel movable wall, a drive shaft and means or rotating the rotor and forimparting anoscillatvinfg motion to thewall during the rotation o the rotor by the continuous rotation of the drive shaft in one direction.

13. lin a' compressor, the combination of a housing, a shaft journald for rotation in the housing, a cylinder withinl the housing,

a piston vwithin the cylinder on said shaft, `1

and mechanism for imparting an oscillating motion to the cylinder by a continuous rotary movement of the shaft and piston.

14. A compre r, comprising a rotary shaft a cylinder around the shaft, mechanism for imparting accelerated and retarded rotary movenrlent to the cylinder by a co'ntinuous rotation of the shaft at uniform speed, and means operated by the shaft for eecting compression within the cylinder during such operation.

,15. A compressor, comprising-a -ro shaft, a, cylinder around the shaft, mechanism for imparting accelerated and retarded rotaryl movement to the cylinder by a continuous rotation ef the shaft at uniform speed, means operated b the shaft, for

eiecting compression wit the cylinder 11aml during such operation, a housing enclosing the cylinder, and means for controlling the discharge of the compressed air. or gas from the cylinder'into the housing.

16. A compressor, comprising a housing, a shaft extending through the housing, a cylinder surrounding the shaft Within the housing, compression pistons Within the cylinder, and mechanism supported. adjacent to the housing for imparting an accelerated and retarded rotary movement to the cylinder by continuous rotation of the shaft at uniform speed.

17. A compressor, comprising a shaft extending through the housing, a cylinder surrounding the shaft in the housing, pistons in connection with the shaft Within the cylinder, an additional shaft a housing,

`mounted eccentrically relative to the firstnamed shaft, and mechanismV in connection with said two shafts for imparting an accelerated and retarded rotary movement to said cylinder by the continuous rotation of said first-named shaft at uniform speed. l

18. A compressor, comprising a housing, a shaft extending through the housing, -a cylinder surrounding the shaft within the housing, means for admitting' air into the cylinder through said shaft, pistons in connection with said shaft 1n -said cylinder, and mechanismfor imparting accelerated and retarded rotary movement to said cylinder by thel continuous rotation of said shaft at uniform speed;

19. A compressor, comprising a housing, a shaft extendin through the housing, a cylinder surroun ing the shaft IWithin the housing, means for admitting air into the cylinder through said shaft, pistons in connection with said shaft in said cylinder, a shaft supported eccentrically with respect to said first-named shaft, and mechanism controlled by said two shafts for imparting accelerated and retarded rotary' movement to said cylinder by the continuous rotation of said first-named shaft at uniform speed.

20. A compressor, comprising a housing, a shaft extending through said housing, a cylinder surrounding the shaft Within the housing, floating end Walls for said cylinder,

means for supporting said'end Walls to close the ends of the cylinder land permitting lapping movements of said walls, pistons in.connectionl with said shaft Within said cylinder, andmechanism for imparting accelerated and retarded rotary movement to4 said cylinder by the continuous rotation of said shaft at uniform speed.

21. A compressor, comprising a housing, a shaftextending'through said housing, a. cylinder surrounding the shaft Within the housing, ioating end `Walls for said cylinder, means for supporting said end Walls to close the ends of the cylinder and permitting lapping movements ofl said Walls, pistonsin connection with said shaft Within said cylinder, an additional shaft, and mechanism controlled by'said first-named shaft and said additional shaft for imparting accelerated' and retarded rotary movement to said cylinder by the continuousrotation of said first-named shaft at uniform speed.

' EDWARD WILSON.

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