US1929999A - wilson - Google Patents

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US1929999A
US1929999A US1929999DA US1929999A US 1929999 A US1929999 A US 1929999A US 1929999D A US1929999D A US 1929999DA US 1929999 A US1929999 A US 1929999A
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head
cylinder
shaft
cylinders
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation

Definitions

  • This invention relates to compressors or pumps and while the embodiment of the device shown is designed specially for use in the compression of refrigerant gas it is capable of useful application to other purposes.
  • An object of the invention is to provide a machine for use as a compressor or pump and comprising a pair of stationary cylindrical heads, each of which is enclosed by a cylinder cooperating therewith to form a compression chamber and having eccentric connection with a single shaft whereby both cylinders are operated to perform their intended functions in a relationship in which they project oppositely from the axis of the shaft so as to balance the operation of the machine.
  • Another object of the invention is to provide a machine for use as a compressor or pump and embodying the subject matter last above mentioned, in combination with a pump for circulating a lubricant through the machine, and means for operating the pump by the same shaft which operates the cylinders.
  • Another object of the invention is to provide a machine of the type and character mentioned wherein the shaft is journaled in spaced bearings and the cylinders are eccentrically connected with the shaft between said bearings.
  • Another object of the invention is to provide an improvement in the type of compressor or pump disclosed in my companion application filed September l, 1928, Serial No. 303,400.
  • Fig. 1 is a vertical sectional View of my improved machine.
  • Fig. 2 is a cross sectional view approximately on the line 22 of Fig. 1.
  • Fig. 3 is a vertical cross sectional view of the stationary element in connection with which the stationary heads are formed about which the compression cylinders operate.
  • Fig. 4 is a cross sectional view of Fig. 1 approximately on the line 4-4 of Fig.1.
  • Fig. 5 is a plan view of the part of the machine shown in Fig. 3 showing the construction of the ends of the stationary heads.
  • Fig. 6 is a perspective view, with a part broken away, of a plate or blade mounted for radial sliding movements in the stationary head of each cylinder.
  • Fig. 7 is a view showing the end of a portion of one of the cylinders making apparent the construction of the annular oil groove which has communication with the outside of the cylinder but does not communicate with the inside of the cylinder.
  • This machine comprises a base 1 having an upwardly extended cylindrical portion 2 and a downwardly extended cylindrical portion 3. These cylindrical portions 2 and 3 constitute heads about which the cylinders operate to perform their functions.
  • a frame comprising a vertical portion 4 which is preferably circular in cross section and a hearing 5 integrally united with the portion 4 is rigidly attached to the base 1 by bolts 6; These bolts 6 also attach to the base 1 the lower housing portion? which is formed integral 'with a bearing 10 8 in axial alinement with the bearing 5.
  • the pump housing 9 is clamped against the lower end of the housing element '7 by the bolts 6 and there is a passage 10 forming communication from the housing 7 to the pump housing 9.
  • the upper housing member 11 for the machine is at+j tached to the base 1 by bolts 12and encloses the part 4.
  • the bearing 5 is lined with a bushing 13 and the bearing 8 is lined witha bushing 14.
  • An electric motor 15 is attached to the support 4 within the housing 11, the wires for said p. motor entering the housing through appropriate fittings 16.
  • a cylinder 17 is mounted around the head 2 and a like cylinder 18 is mounted around the 85. head 3.
  • the heads 2 and 3 are preferably of the same diameter and the cylinders 17 and 18 are of the same diameter, although the internal diameter of said cylinders is greater than the diameter of the heads 2 and 3.
  • the lower end 19 of the cylinder 17 operates in close contact with a smooth wall 20 formed on the base 1 and extending radially from the head 2.
  • the lower end of the cylinder 17 is formed with an annular groove 21 which does not communicate with the inside of the cylinder but does communicate with the outside through notches 22.
  • the upper end of the cylinder 17 has an end wall 23 extending radially toward its axis and operating in close n contact with the upper end of the head 2.
  • the cylinder 18 is similarly constructed and arranged having its upper end operating in close contact with a smooth wall 24 formed on the base 1 and extending radially from the head 3.
  • the upper end of the cylinder 18 has an annular groove 25 which does not communicate with the inside of the cylinder but does communicate with the outside.
  • the lower end of the cylinder 18 has an end wall 25a extending radially toward its axis and operating in close contact with the lower end of the head 3.
  • Fig. 1 it will be seen that the two cylinders 17 and 18 are between the two bearings 5 and 8 and spaced therefrom, permitting axial movements of said cylinders-toward the respective bearings 5 and 8 in order to relieve any excess of pressure within said cylinders 17 and 18.
  • a spring 26 interposedv between the bearing 5 and the end wall 23 of the cylinder 17 cooperates with gravity to hold said cylinder 17 in cooperative relationship to the head 2.
  • a spring 27 interposed between the bearing 8 and the end wall 25a of the cylinder 18 supports said cylinder 18 in cooperative relationship with the head 3.
  • the head 2 is formed with an annular groove 28 having communication through passages 29 with a large central hole 30 through the" base 1 and through the heads 2 and 3.
  • the head 3 is formed with a circumferential groove 31 having communication with the large central hole 30 through passages 32.
  • neither groove 28 nor 31 communicates with the outside periphery of the heads 2 or 3 in which said grooves are formed;
  • These grooves 28 and 31 and the passages 29 and 32 are designed and intended to receive oil so as to lubricate the parts and reduce friction in order to keep the machine in a condition for easy operation and reduce the consumption of electrical energy.
  • One side of the head 2 is formed with 'a wide slot 33 (Figs. 4 and 5) extending the full length of the head from the wall 20 to the cylinder end wall 23.
  • a plate or blade 34 is mounted for radial sliding movements in said slot 33.
  • a cup retainer 35 is mounted in a hole 36 in the inner edge of the plate or blade 34 and encloses a spring 37 having one end bearing against the inner end wall of said cup retainer and the opposite end bearing against the bottom of the hole in the plate or blade 34.
  • a wide slot 38 extending the full length of the head from the wall 24 to the end wall 25a of the cylinder18.
  • a plate or blade 39 is mounted for radial sliding movements in said slot.
  • a cup retainer 40 is mounted in a hole 41 in the inner edge of the plate or blade 39 and encloses a spring 42 having one end bearing against the inner end wall of said cup retainer and the opposite end bearing against the bottom of the hole in the plate or blade 39.
  • a shaft 43 is connected with the motor 15 for. rotation thereby and is journaled for rotation in the bushings l3 and 14.
  • This shaft has an eccentric portion 44 and the cylinder 17 has a hub 45 which is concentric with .the cylinder and is provided with a bushing 46 mounted on the eccentric 44.
  • These parts should be fitted and assembled in such manner as to permit the shaft 43 and its eccentric 28 to rotate without necessarily rotating the hub 45 or the cylinder 17 at the same speed at which the shaft 43 rotates.
  • the cylinder may rotate with or slower than said shaft 43.
  • the eccentric 44- extends into the hole 30' and the hub 45 extends downwardly in said hole through the head 2 which is of suflicient' size to permit all necessary movements of the hub 45 without moving said hub into contact with the wall of said recess.
  • the cylinder end wall 23 has holes 47 therethrough opening into the hole 30 in all positions of the cylinder 17 so as topermit free circulation of oil therethrough.
  • the inner end'of the spring retainer cup 35 abuts against the hub 45 and thereby causesv the spring 37 to press the plate or blade 34 outwardly in a radial direction so that the outer edge of said plate or blade is at all times in contact with the inside of the cylinder 17 throughout the entire length of said cylinder and the head 2.
  • These parts are thoroughly lubricated at all times because of the fact that they are submerged in oil.
  • the shaft 43 has another eccentric 48 in all respects similar to the eccentric 44 but projecting radially in the opposite direction from the axis of the shaft 3.
  • Thecylinder 18 has a hub 49 which is concentric with the cylinder 18. This hub is provided with a bushing 50 mounted on the eccentric 48 and these parts should be fitted and assembled :in such manner as to permit the shaft 43 and its eccentric 48 to rotate without rotating the hub '49 or the cylinder 18.
  • the eccentric 48 is within the hole 30 and the hub 49 extends upwardly into said hole which is of suificient size to permit all the necessary movements of the hub 49 without moving said hub into contact with the wall of said hole.
  • the cylinder end wall25a- has holes 51 therethrough so as to permit free circulation of oil throughout the operation of the machine.
  • the air or gas to be compressed or pumped enters the cylinder 17 through a passage 54 (Fig. 4) and enters the cylinder 18 through a passage 55 136 (Fig. 3).
  • These passages 54 and 55 are near the forward sides of the plates or blades 34 and 39, respectively.
  • the head 2 is formed with an outlet passage 56 communicating through a tube 57 with the inside of the upper portion of the housing 11 above the oil level 52.
  • a tube or pipe 58 communicates with the inside of the upper portion of the housing 11 above the oil level 52.
  • From the housing 11 the compressed air or gas is conducted through a pipe 59 to a condenser (not shown) or elsewhere.
  • the compressed air or gas obtained by operation of the machine is confined in the housing 11 and' dill neaaaee exerts a downward pressure against theoil in said housing, but not to such an extent as to prevent thecylinders l7 and 18 from yielding or opening to relieve excess pressure.
  • the pump housing 9 encloses a centrifugal pump device 6Q (Fig, l) which is preferably concentric with the shaft 43 and which operates to cause flow of oil through an outlet passage 61 into a pipe 62 and thence through a pipe connection 63 into the housing 11.
  • the pump to is attached directly to the shaft d3.
  • a compressor or pump comprising a stationary cylindrical vertical head having a hole in its center and having an annular groove in its upper end in communication with said. hole and out of communication with the periphery of said head, a vertical shaft extending through said head, spaced bearings at opposite sides of said head in which said shaft is journaled for rotation, an
  • an imperforate cylinder cooperating with said head to form a compression chamber and operatively connected with said eccentric for operation about said head and having some portion of its inner periphery constantly in contact with some portion of the outer periphery of said head, and an element movable radially across said chamber and cooperating with said head and said cylinder to eifect compression.
  • a compressor or pump comprising a stationary cylindrical vertical head having a hole in its center and having an annular groove in its upper end in communication with said hole and out of communication with the periphery of said head, a vertical shaft extending through said head, spaced bearings at opposite sides of said head in which said shaft is journaled for rotation, an eccentric on said shaft in said head, an imper- -forate cylinder operatively connected with said eccentric for operation about said head and having some portion of its inner periphery constantly in contact with some portion of the outer periphery of said head, and yielding means holding said iclylinder in cooperative relationship with said earl.
  • a compressor or pump comprising a stationary vertical head having a hole through its centerand having an annular groove in one end opening into said hole'and being out of communication with the periphery of sa d head, a rigid radial horizontal'wall 'at the opposite end of ,said head, a cylinder enclosing said head and having one end seated upon said horizontal wall and a groove in said end, a wall rigid with the opposite end of said cylinder contacting with the end of said head in which said first groove is feed, and mechanism for operating said cylinder rotatively and eccen'trically about said head.
  • a compressor or pp comprising two oppositely projecting ardally alined cylindrical heads, a shaft extending through said head, on imperforate cylinder enclosing each of said heads and cooperating therewith to 0 a compression chamber, elements cooperating with said heads and said cylinders to effect compression, a pair $5 of eccentrics on said shaft loosely engaging'said cylinders for operating said cylinders about said heads as an incident to rotation of said shaft, and resilient means for holding said cylinders in proper cooperative relationship with said heads.
  • a compressor or pump comprising a stationary cylindrical head, an imperforate cylinder eccentrically enclosing said head and having a groove in one end thereof counicating with the outside of the cylinder and being out of communication with the inside of the cylinder, a rigid wall abutting said end of said cylinder, mechanism for operating said cylinder eccentrically about said head, and aidevice crossing the space between said cylinder and said head and cooperating therewith to effect compression.
  • a compressor or pump comprising a stationary cylindrical head, an imperforate cylinder eccentrically enclosing said head and having a groove in one end thereof communicating with the outside of the cyl nder and being out of communication with the inside of the cylinder, a rigid .wall abutting said end of said cylinder, mechanism for operating said cylinder eccentrically about said head, an outwardly movable member supported by said head' and contacting with the inner periphery of said cylinder'and' co.- operating with said head and said cylinder to eifect compression, and a resilient device holding said cylinder in cooperative relationship to said head;
  • a compressor or pump comprising a stationary cylindrical head having a hole therethrough and having an annular groove in one end, which sa d groove communicates with said hole and is out of communication with the periphery of said head, an imperforate cylinder eccentrically enclosing said head, a movabledevice crossing the space between said cylinder and said head and cooperat ng therewith to effect compression, a wall in connection with said cylinder abuttmg against the end of said head which contains said groove, and mechanism for operating said cylinder eccentrically about said head.
  • a compressor or pump comprising a station- 130 ary cylindrical head having a hole therethrough and having an annular groove in one end, which said groove communicates with said hole and is out ofcommunication with the periphery of said head, an imperforate cylinder eccentrically en- 135 closing said head, a relatively movable element supported by said head and crossing the space between said head and said cylinder and cooperating therewith to effect compression, a wall in connection with said cylinder abutting against 140 the end of said head which contains said groove, mechanism for operating said cylinder eccentrically about said head, and a spring yieldingly holding said cylinder in cooperative relationship with said head.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Description

Oct. 10, 1933. E, wlLsoN' 1,929,999
COMPRES SOR OR PUMP Filed NOV. 19, 1928 3 Sheets-Sheet l Fig-1- hy e/7%)? 5 4 4; Who/9 Oct. 10, 1933. E W N 1,929,999
COMPRESSOR 0R PUMP Filed Nov. 19, 1928 3 Sheets-Sheet 2 Oct. 10, 1933. E WILSQN I 1,929,999
COMPRESSOR 0R PUMP Fild Nov. 19. 1928 3 Sheets-Sheet 3 //1 Wavy 02? fax 1 m? W/Jan,
Patented Oct. 10, 1933 UNITED STATES PATENT FFICE Application November 19, 1928 Serial No. 320,401
8 Claims.
This invention relates to compressors or pumps and while the embodiment of the device shown is designed specially for use in the compression of refrigerant gas it is capable of useful application to other purposes.
An object of the invention is to provide a machine for use as a compressor or pump and comprising a pair of stationary cylindrical heads, each of which is enclosed by a cylinder cooperating therewith to form a compression chamber and having eccentric connection with a single shaft whereby both cylinders are operated to perform their intended functions in a relationship in which they project oppositely from the axis of the shaft so as to balance the operation of the machine.
Another object of the invention is to provide a machine for use as a compressor or pump and embodying the subject matter last above mentioned, in combination with a pump for circulating a lubricant through the machine, and means for operating the pump by the same shaft which operates the cylinders.
Another object of the invention is to provide a machine of the type and character mentioned wherein the shaft is journaled in spaced bearings and the cylinders are eccentrically connected with the shaft between said bearings.
Another object of the invention is to provide an improvement in the type of compressor or pump disclosed in my companion application filed September l, 1928, Serial No. 303,400.
Other objects will appear from the following description, reference being made to the draw ings in which Fig. 1 is a vertical sectional View of my improved machine.
Fig. 2 is a cross sectional view approximately on the line 22 of Fig. 1.
Fig. 3 is a vertical cross sectional view of the stationary element in connection with which the stationary heads are formed about which the compression cylinders operate.
"Fig. 4 is a cross sectional view of Fig. 1 approximately on the line 4-4 of Fig.1.
Fig. 5 is a plan view of the part of the machine shown in Fig. 3 showing the construction of the ends of the stationary heads.
Fig. 6 is a perspective view, with a part broken away, of a plate or blade mounted for radial sliding movements in the stationary head of each cylinder.
Fig. 7 is a view showing the end of a portion of one of the cylinders making apparent the construction of the annular oil groove which has communication with the outside of the cylinder but does not communicate with the inside of the cylinder.
This machine comprises a base 1 having an upwardly extended cylindrical portion 2 and a downwardly extended cylindrical portion 3. These cylindrical portions 2 and 3 constitute heads about which the cylinders operate to perform their functions.
A frame comprising a vertical portion 4 which is preferably circular in cross section and a hearing 5 integrally united with the portion 4 is rigidly attached to the base 1 by bolts 6; These bolts 6 also attach to the base 1 the lower housing portion? which is formed integral 'with a bearing 10 8 in axial alinement with the bearing 5. The pump housing 9 is clamped against the lower end of the housing element '7 by the bolts 6 and there is a passage 10 forming communication from the housing 7 to the pump housing 9. The upper housing member 11 for the machine is at+j tached to the base 1 by bolts 12and encloses the part 4. The bearing 5 is lined with a bushing 13 and the bearing 8 is lined witha bushing 14.
An electric motor 15 is attached to the support 4 within the housing 11, the wires for said p. motor entering the housing through appropriate fittings 16.
A cylinder 17 is mounted around the head 2 and a like cylinder 18 is mounted around the 85. head 3. The heads 2 and 3 are preferably of the same diameter and the cylinders 17 and 18 are of the same diameter, although the internal diameter of said cylinders is greater than the diameter of the heads 2 and 3. The lower end 19 of the cylinder 17 operates in close contact with a smooth wall 20 formed on the base 1 and extending radially from the head 2. The lower end of the cylinder 17 is formed with an annular groove 21 which does not communicate with the inside of the cylinder but does communicate with the outside through notches 22. The upper end of the cylinder 17 has an end wall 23 extending radially toward its axis and operating in close n contact with the upper end of the head 2. The cylinder 18 is similarly constructed and arranged having its upper end operating in close contact with a smooth wall 24 formed on the base 1 and extending radially from the head 3. The upper end of the cylinder 18 has an annular groove 25 which does not communicate with the inside of the cylinder but does communicate with the outside. The lower end of the cylinder 18 has an end wall 25a extending radially toward its axis and operating in close contact with the lower end of the head 3.
By reference to Fig. 1 it will be seen that the two cylinders 17 and 18 are between the two bearings 5 and 8 and spaced therefrom, permitting axial movements of said cylinders-toward the respective bearings 5 and 8 in order to relieve any excess of pressure within said cylinders 17 and 18. A spring 26 interposedv between the bearing 5 and the end wall 23 of the cylinder 17 cooperates with gravity to hold said cylinder 17 in cooperative relationship to the head 2. And a spring 27 interposed between the bearing 8 and the end wall 25a of the cylinder 18 supports said cylinder 18 in cooperative relationship with the head 3.
The head 2 is formed with an annular groove 28 having communication through passages 29 with a large central hole 30 through the" base 1 and through the heads 2 and 3. Similarly, the head 3 is formed with a circumferential groove 31 having communication with the large central hole 30 through passages 32. However, neither groove 28 nor 31 communicates with the outside periphery of the heads 2 or 3 in which said grooves are formed; These grooves 28 and 31 and the passages 29 and 32 are designed and intended to receive oil so as to lubricate the parts and reduce friction in order to keep the machine in a condition for easy operation and reduce the consumption of electrical energy.
One side of the head 2 is formed with 'a wide slot 33 (Figs. 4 and 5) extending the full length of the head from the wall 20 to the cylinder end wall 23. A plate or blade 34 is mounted for radial sliding movements in said slot 33. A cup retainer 35 is mounted in a hole 36 in the inner edge of the plate or blade 34 and encloses a spring 37 having one end bearing against the inner end wall of said cup retainer and the opposite end bearing against the bottom of the hole in the plate or blade 34.- SimiIarIy one side of the head 3 is formed with a wide slot 38 extending the full length of the head from the wall 24 to the end wall 25a of the cylinder18. A plate or blade 39 is mounted for radial sliding movements in said slot. A cup retainer 40 is mounted in a hole 41 in the inner edge of the plate or blade 39 and encloses a spring 42 having one end bearing against the inner end wall of said cup retainer and the opposite end bearing against the bottom of the hole in the plate or blade 39.
A shaft 43 is connected with the motor 15 for. rotation thereby and is journaled for rotation in the bushings l3 and 14. This shaft has an eccentric portion 44 and the cylinder 17 has a hub 45 which is concentric with .the cylinder and is provided with a bushing 46 mounted on the eccentric 44. These parts should be fitted and assembled in such manner as to permit the shaft 43 and its eccentric 28 to rotate without necessarily rotating the hub 45 or the cylinder 17 at the same speed at which the shaft 43 rotates. The cylinder may rotate with or slower than said shaft 43. The eccentric 44- extends into the hole 30' and the hub 45 extends downwardly in said hole through the head 2 which is of suflicient' size to permit all necessary movements of the hub 45 without moving said hub into contact with the wall of said recess. The cylinder end wall 23 has holes 47 therethrough opening into the hole 30 in all positions of the cylinder 17 so as topermit free circulation of oil therethrough.
The inner end'of the spring retainer cup 35 abuts against the hub 45 and thereby causesv the spring 37 to press the plate or blade 34 outwardly in a radial direction so that the outer edge of said plate or blade is at all times in contact with the inside of the cylinder 17 throughout the entire length of said cylinder and the head 2. These parts are thoroughly lubricated at all times because of the fact that they are submerged in oil.
The shaft 43 has another eccentric 48 in all respects similar to the eccentric 44 but projecting radially in the opposite direction from the axis of the shaft 3. Thecylinder 18 has a hub 49 which is concentric with the cylinder 18. This hub is provided with a bushing 50 mounted on the eccentric 48 and these parts should be fitted and assembled :in such manner as to permit the shaft 43 and its eccentric 48 to rotate without rotating the hub '49 or the cylinder 18. The eccentric 48 is within the hole 30 and the hub 49 extends upwardly into said hole which is of suificient size to permit all the necessary movements of the hub 49 without moving said hub into contact with the wall of said hole. The cylinder end wall25a-has holes 51 therethrough so as to permit free circulation of oil throughout the operation of the machine. The inner end of the spring retainer cup,40 abuts against the hub 49 and thereby causes the spring 42' to press the plate or blade 39 outwardly in a radial direction so that the outer edge of said plate or blade is at all times in contact with the inside of the cylinder 18 throughout the entire length of said cylinder and the head 3. These parts are thoroughly lubricatedat all times because of the fact that they are submerged in circulating oil. From the foregoing it will be obvious that the opposite disposition of the eccentrics 44 and 48 and the cylinders 17 and 18 effect a counterbalance relationship of said parts and tend to prevent torsional strains upon the shaft 43 or other operating parts. By this means I am enabled to avoid the use of 116 special counterbalances.
When the machine is ready for use it contains oil up to about the line 52 (Fig. 1), the oil having free circulation through holes 53 in that part of the frame 4 which supports the bearing 5; through the holes 47 in the cylinder end wall 23 and through the hole 30 in the heads 2 and 3; and through the holes 51 and the passage 10 into the pump housing 9. In this way all of the operating mechanism including and below the bearing 5 is constantly submerged in oil. The close fitting of the cylinder end walls 23 and 25a against the ends of the heads 2 and 3 and the close fitting of the ends of said cylinders against the surfaces 20 and 24 prevent oil from passing between said parts and entering the cylinders but maintain said parts in a lubricated condition.
The air or gas to be compressed or pumped enters the cylinder 17 through a passage 54 (Fig. 4) and enters the cylinder 18 through a passage 55 136 (Fig. 3). These passages 54 and 55 are near the forward sides of the plates or blades 34 and 39, respectively. Near the opposite side of the plate or blade 34 the head 2 is formed with an outlet passage 56 communicating through a tube 57 with the inside of the upper portion of the housing 11 above the oil level 52. Near the opposite side of the plate or blade 39 from the passage 55 a tube or pipe 58 communicates with the inside of the upper portion of the housing 11 above the oil level 52. From the housing 11 the compressed air or gas is conducted through a pipe 59 to a condenser (not shown) or elsewhere. Thus, the compressed air or gas obtained by operation of the machine is confined in the housing 11 and' dill neaaaee exerts a downward pressure against theoil in said housing, but not to such an extent as to prevent thecylinders l7 and 18 from yielding or opening to relieve excess pressure.
The pump housing 9 encloses a centrifugal pump device 6Q (Fig, l) which is preferably concentric with the shaft 43 and which operates to cause flow of oil through an outlet passage 61 into a pipe 62 and thence through a pipe connection 63 into the housing 11. The pump to is attached directly to the shaft d3.
When the machine is ready for use it contains oil to about the line 52, which is above all of the parts driven by the shaft 43 and all of the bearings for said shaft. As a result of this arrangement all of the parts are maintained in a constantly lubricated condition. The efiect of the rotation of the shaft 43 by the motor 15 is to operate the cylinders 17 and 18 eccentrically about the heads 2 and 3 effectively to draw the air or gas into the cylinders and to compress the air or gas and eject the same from the cylinders. The arrangement of the parts in a balanced relationship reduces friction to a minimum and prevents undue strains upon any part of the operating mechanism. The operation and function of the machine being apparent, I claim and desire to-secure by Letters Patent:
l. A compressor or pump comprising a stationary cylindrical vertical head having a hole in its center and having an annular groove in its upper end in communication with said. hole and out of communication with the periphery of said head, a vertical shaft extending through said head, spaced bearings at opposite sides of said head in which said shaft is journaled for rotation, an
eccentric on said shaft in said head, an imperforate cylinder cooperating with said head to form a compression chamber and operatively connected with said eccentric for operation about said head and having some portion of its inner periphery constantly in contact with some portion of the outer periphery of said head, and an element movable radially across said chamber and cooperating with said head and said cylinder to eifect compression. 2. A compressor or pump comprising a stationary cylindrical vertical head having a hole in its center and having an annular groove in its upper end in communication with said hole and out of communication with the periphery of said head, a vertical shaft extending through said head, spaced bearings at opposite sides of said head in which said shaft is journaled for rotation, an eccentric on said shaft in said head, an imper- -forate cylinder operatively connected with said eccentric for operation about said head and having some portion of its inner periphery constantly in contact with some portion of the outer periphery of said head, and yielding means holding said iclylinder in cooperative relationship with said earl.
3. A compressor or pump comprising a stationary vertical head having a hole through its centerand having an annular groove in one end opening into said hole'and being out of communication with the periphery of sa d head, a rigid radial horizontal'wall 'at the opposite end of ,said head, a cylinder enclosing said head and having one end seated upon said horizontal wall and a groove in said end, a wall rigid with the opposite end of said cylinder contacting with the end of said head in which said first groove is feed, and mechanism for operating said cylinder rotatively and eccen'trically about said head.
a. A compressor or pp comprising two oppositely projecting ardally alined cylindrical heads, a shaft extending through said head, on imperforate cylinder enclosing each of said heads and cooperating therewith to 0 a compression chamber, elements cooperating with said heads and said cylinders to effect compression, a pair $5 of eccentrics on said shaft loosely engaging'said cylinders for operating said cylinders about said heads as an incident to rotation of said shaft, and resilient means for holding said cylinders in proper cooperative relationship with said heads. is
5. A compressor or pump comprising a stationary cylindrical head, an imperforate cylinder eccentrically enclosing said head and having a groove in one end thereof counicating with the outside of the cylinder and being out of communication with the inside of the cylinder, a rigid wall abutting said end of said cylinder, mechanism for operating said cylinder eccentrically about said head, and aidevice crossing the space between said cylinder and said head and cooperating therewith to effect compression.
6. A compressor or pump comprising a stationary cylindrical head, an imperforate cylinder eccentrically enclosing said head and having a groove in one end thereof communicating with the outside of the cyl nder and being out of communication with the inside of the cylinder, a rigid .wall abutting said end of said cylinder, mechanism for operating said cylinder eccentrically about said head, an outwardly movable member supported by said head' and contacting with the inner periphery of said cylinder'and' co.- operating with said head and said cylinder to eifect compression, and a resilient device holding said cylinder in cooperative relationship to said head;
7. A compressor or pump comprising a stationary cylindrical head having a hole therethrough and having an annular groove in one end, which sa d groove communicates with said hole and is out of communication with the periphery of said head, an imperforate cylinder eccentrically enclosing said head, a movabledevice crossing the space between said cylinder and said head and cooperat ng therewith to effect compression, a wall in connection with said cylinder abuttmg against the end of said head which contains said groove, and mechanism for operating said cylinder eccentrically about said head. V
8. A compressor or pump comprising a station- 130 ary cylindrical head having a hole therethrough and having an annular groove in one end, which said groove communicates with said hole and is out ofcommunication with the periphery of said head, an imperforate cylinder eccentrically en- 135 closing said head, a relatively movable element supported by said head and crossing the space between said head and said cylinder and cooperating therewith to effect compression, a wall in connection with said cylinder abutting against 140 the end of said head which contains said groove, mechanism for operating said cylinder eccentrically about said head, and a spring yieldingly holding said cylinder in cooperative relationship with said head. 14,5
EDWARD WILSON.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6171076B1 (en) 1998-06-10 2001-01-09 Tecumseh Products Company Hermetic compressor assembly having a suction chamber and twin axially disposed discharge chambers
US6318981B1 (en) * 1999-08-31 2001-11-20 Sanyo Electric Co., Ltd. Two-cylinder type two-stage compression rotary compressor
US20110236245A1 (en) * 2010-03-25 2011-09-29 Sanyo Electric Co., Ltd. Rotary compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6171076B1 (en) 1998-06-10 2001-01-09 Tecumseh Products Company Hermetic compressor assembly having a suction chamber and twin axially disposed discharge chambers
US6318981B1 (en) * 1999-08-31 2001-11-20 Sanyo Electric Co., Ltd. Two-cylinder type two-stage compression rotary compressor
US20110236245A1 (en) * 2010-03-25 2011-09-29 Sanyo Electric Co., Ltd. Rotary compressor
US8747090B2 (en) * 2010-03-25 2014-06-10 Sanyo Electric Co., Ltd. Rotary compressor with improved oil retention
EP2372159A3 (en) * 2010-03-25 2016-04-27 Sanyo Electric Co., Ltd. Sealed rotary compressor

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