USRE17298E

USRE17298E - Compressor

Info

Publication number: USRE17298E
Authority: US
Publication date: 1929-05-21

Description

Mayzl 1929. H. s. HELE-SHAW ET! AL R 17 293 ROTARY AIR COMPRESSOR Original Filed Feb. 15, 1925 3 h t 1 H. S. HELE-SHAW ET May 21, 1929.

ROTARY AIR COMPRESSOR Original Fil ed Feb. 13, 1925 3 Sheets-Sheet 2 May 21, 1929. 3 HELESQHAW T AL Re. 17,298

ROTARY AIR COMPRESSOR Oriina'l- Filed Feb. 15', .1925" 3 Sheets-Sheet 3 Reissued May 21, 1929.

UNITED SI'IAVAATES HENRY SELBY HELE-SHAW AND THOMAS EDWARD BEACHAIMI, OF LONDON, ENGLAND.

ROTARY Am comrnnsson.

Original No. 1,611,030, dated December '14, '1926, Serial No. 8,948, filedIebruary 13, 1925, and in Great Britain March 28, 1924. Application for reis to one another, wherein the joint between the cylinder carrier and the valve is sealed .bya

' lubricant.

A further feature of the invention com prises a separator or eliminator for separating oil or other lubricant from air or gas consisting ofaseries of Vertical rods arranged in air or gas is passed the vertical rods being arranged to cause the stream of air or gas to take a sinuous path and so intercept and collect therefromthe oil and; allow it to drain down the rods to the bottom of the separator.

Itis roposed to create a filmof liquid between he working surfaces in 'order to prebeing ledfrom this store of liquid to passages in the central valvecommunicating with suitvent gas leakage, in the following manner. A reservoir of oil, glycerine or other liquid is formed in a suitable position which reservoir is under the final gas pressure, a passage ably arranged holes or grooves in its surface. The pressure in the reservoir will thenforce the liquid along the central valve and into the valve ports and cylinders and thus" maintain a liquid seal. Any liquid which passes the pistons or the end of the .valve drains to the bottom of the case from which it is picked up bythe air suction, carried'through the compressor and up into the reservoir mentioned above. The oil may be picked up by suction by ionising a choke tube -in the, suction inlet (if the pump capable of creating sufiicient ranged in the top reservoirtoenable the discharge gas to deposit the'liquid it has carried vacuum by Venturi action tolift the oil the required amount, a sprayer beingprovided if necessary. i

Suitable baflies of air filters maybe arthrough the compressors. The case, inter mediate and final receivers may be cooled by means 'of suitable water jackets orby. air fins. p

An embodiment of the invention is illus- 'trated by the accompanying drawings,,where sue filed December 6, 1928. Serial No. 324,260.

oil collector or separator illustrating'the path of the air,

Figure 5 1s a perspective view of the Valve, and Figure 6 is a view of one end of the compressor casingshowing the air cooling'passages.

'In these drawings 20 is the main cylindrical portion of the compressor casing. having 'water coolin passages 21. On one end of the casing 20 is oltedan end plate 22 having at its central portion a hole provided with a ball bearing 23 in which rotates apower shaft- 24, driven from any suitable source of power. At the other end of the casing is fixed a plate 25 provided with a central cylindrical extension 26 forming a fixed valve fitting in a bore in a cylinder carrier 27 which is formed as an extension of the power shaft 24.

pistons 28 and- 29, and at right. angles to these low pressure cylindersthe carrier is bored at two diametrically opposite places to form high pressurecylinders C and (l in which reciprocate pistonsi3Q.and." 31.

' Each pi ton is provided with a gudgeon pin 32, of considerable size compared with the piston and'fits in holes in bosses 34 provided The cylinder carrier-27 is bored at two diametrically opposite places to form low pressurewcylinders C and C in which reciprocate Figure dis a plan viewof a portion of the in'the sides of the pistons which are of thetruncated type. At each end of the gudgeon pins 32 a groove 35 is cut away on its inner side in such'mann'er as to leave upper portions adapted to slide in slots36 provided in opposite sides of the cylinders, The portions v of the gudgeon pins projecting beyond the sides of the cylinders are provided with outer circular race 38 on which is mounted the large annular roller 39., This roller 39 rolls in the groove 40" in the ring 40 on that .side of the cylinder. The diameter of the annular roller 39 is obviousl' just a little smaller than the width oft egroove 40.

cranked or -'eccentric pins 37 each of which is provided with roller bearings 38 having an The rings 40, one at each-end of the gudgeon pin 22-may be divided and the rollers substituted by slides, slippers or equivalentla v1ces.

The rings 40 are recessed to receive the outer races of ball bearings 41, the inner races of these ball bearings being mounted on ec centric projections 42 extending from the inner faces of, the end plates 22 and 25.1

By this construction as the power'shaft 24 rotates it carries round the cylinder carrier 27 and also the pistons and gudgeon pins 32 and their rollers 39 round in the grooves in the rings 40, and as. these rings are mounted on the fixed eccentrics 42 the pistons are reci rocated radially in regular sequence. The ow pressure cylinders C and C are I provided with

ports

50 and 50 in their inner ends, and the high pressure cylinders with

similar ports

51, 51" each openingon to the outer surface of the fixed central valve 26, the ports 50*" and 50 being out'oi circumferential adignment with the

ports

51 and 51

gThe ports

50 and 50 of the low pressure cylinders rotate over ports 52 and 53 arranged at opposite sides of the valve26 (see Fig. 3) 52 being connected by a passage 54 in the valve and a passage 56 inthe shaft 24 to an air inlet 55, while 53 is connected by a longitudinal passage 57 to a sinuous cooling passage 58 in a plate 69 fixed on the end plat 25 of the casing (see Fig. 6).

. The ports 51' and 51! of the high pressure cylinder rotate over fports 60 and 61 arranged .at opposite sides 0 2) 60 being connected by a longitudinal passage 59 with an opening in the late i'egistering Jwith a port 72 in'the p ate 69 at the p other'end of the cooling passage 58, while the a passage 62 and an inlet 73 to a final sinuous cooling passage 63 in the plate 69, the outlet valve port 61 is connected bya longitudinal 74 of this passage being connected to a pipe 64 leading toa separator 70 in which theoil 'is separated from the air before it passes through-an outlet 71 intoa compressed air reservoir-or .to any desired motor or'apparatusfor direct use. '7

The low pressure cylinders C 0?, are coaxial at'opposite sides ofuthe valve 26 so that when the port of the cylinder O is open through'the valve port 52' to the air inlet 55, the port 50" ofthe cylinder C will be open through the valve port 53 to the cooler 58 and the high'pressure. c linders Cand Ct are at rig'htzangles to 1 and C and also coaxial at opposite sides of the valve 26 so that when the port 51 of the cylinder C is cooler 63 a p Air or gas passes through the inlet 55, the passage 56 in the shaft 24, and the passage '54 in the valve 26 and then throughthe valve open through the valve port 60 to the cooler 58, the port 51 of the cylinder C will be open through the valve port 61 tothe final the valve 26 (see-Fig.

valve 26.

port 52, and when in register therewith, through the port 50 into the cylinder C during the outstroke of the piston 28. The continued rotation of the cylinders around the valve 26 closes the valve port 52 and opens the valve port 53 to the cylinder C so that during the instroke of the piston 28 air is "the cylinder carrier 27 rotates to such a position that the cylinder port 51* will register with the valve port 61 which opens into a valve passage 62 of which the other end is in register with the second cooling passage 63 in the'plate 69.

v The eliminator or separator 7 0 consists of a horizontal cylindrical Vessel having an inlet 8( connected to the compressed air delivery pipe 64'andcontains a series of vertical rods 81 supported betweentwo

horizontal plates

82 and 83,-a perforated distributing late'84 being fixed in the cylinder over the inlet 80 so that all the air will pass through this plate before passin between the rods. The rods 8l are arrange in rows as shown in Fig yllI'B 44,each;row being opposite the spaces of the next row so that alr passing through these rods will take a sinuouspath as shown by the arrows.

The air passing through the eliminator encounters the rods and deposits the suspended oil on the rods, this oil drains down the rods into the space below them, while the I clean air passes through the outlet 71. These vertical rods 81 must be sufliciently close together to insure all the 'oil from the passing air collected on them, they must however, also be sufliciently far apart to prevent the collected 'oil being taken up by the passing air, that is their dimensions, number and disposition must be such as to prevent the air passing between them at a velocity that will not be high enough tO efiect a scouring of the rods; or too low and so pass round the rods withoutdeposit ing the oil. y

The oil from the separator 70 passes down through a pipe 85 to a longitudinalpassage 86 in the valve 26 (see? Figs. 2 and 5). The passage 86 branches ofl through'radial holes ,87 to circumferential grooves 88' provided on the valve surface, each of these .surface grooves 88 being provided with branches'89 leading to the line of ports to ensure the formation of a complete oil film round the The valve'26 is provided with circulating high pressure cylinder communication cooling water spaces 90 communicating by apassage 91 with awater supply pipe 92, and also with an outlet passage 93 which conducts the water to a space 94 between the end plate and the cooler plate 69. The water then passes through passages not shown to the water jackets 21 of the casing and is disi charged through the outlet pipe 95.

be arranged between any of the intermediate form a liquid seal at this point.

The oil collected by the rods 81 drains to the bottom of the casing 20 in a well 96, which communicates by a passage97 in the end plate 22 with radial openings 98 in the shaft 24 and whichopen intothe air passage 56 so that during the rotation of the shaft oil will be drawn 1nto this passage carried with the airintothe cylinders and thereby lubricate the pistons. In cases where it is desired to. compress a gas from or to a pressure which may vary considerably, nonreturn valves may and final receivers, so that in the eventof the final pressure being reached in an intermediate cylinder the latter is enabled to discharge direct into the high pressure passage.

The case may be inrcommunication with either suction, discharge or an intermediate pressure, and the shaft passing through the. case fitted with a gland which gland may be fed with oil from the pressure reservoir to The cylinders instead of being arranged in diametrically opposite pairs as shown in the ,drawings may be arranged at any suitable angle to one another.

What we claim and desire to secure by Letters Patent is l 1. A rotary air or gas compressor, com prising high and low pressure cylinders, a rotary cylinder-carrier, a fixed cylindrical valve having inlet and outlet passages, and a gas cooler, the cylinder carrier being provided with passages leading from the cylindersto the valve about which it rotates to placethe outlet froma low pressure cylinder in communication with'the cooler and then the cooler in communication with the inlet of a high-pressure cylinder, andthen the outletof the high-pressure .cylinderin communipation with the compressed air delivery outet. v i i i 2. A rotary air or gas compressor, com prising high and low pressure radial cylinders, a rotary cylinder carrier, a fixed cylindrical valve having ports and inlet and outlet passages connected thereto; and a gas cooler,,th e outer ends of the cylinders being open and their inner ends provided with passages, leading to a bearing face of the;cylinder carrier on the valve,-the cylinder carrier rotating-on the valve to place the low pressure cylinder in communication with the cooler and then the cooler in communication with the high pressure, cylinder, and then the with the compressed air delivery outlet.

3. A rotary airor gascompressor, com prising a plurality othighand low pressure cylinders, a rotary cylinder carrier, a fixed cylindrical valve having inlet and outlet passages'connected thereto, and a gas cooler, them cylinders being arranged in diametrically op-' .posedhigh pressure and low pressure pairs in the'carrier and the carrier provided with passages leading from the cylinders to oppositely disposed ports in the valves about which it rotates to place first one low pressure cylinder in communication with the coolers and then the cooler in'communication with the high pressure cylinder, and then the high pressure cylinder in communication with the compressed air delivery outlet and during the samesequcnce of operations to'place the opposite low pressure cylinder in communicanected thereto, and two gas coolers, the cylindel carrier being provided with passages leading from the cylinders to the valve about which it rotates to place the low pressure cylinder in communication with one of the coolers and then this cooler in communlcation with the-high pres sure cylinder, and then the high pressure cylinder 1n communication with the other cooler and from which the compressed air is delivered.

5.. A rotary air or gas compressor, comprising high and low pressure radlal cyl nders, a rotary cylinder carrier a fixed cyllndrical valve having ports and inlet and outlet passages connected thereto, and two gas coolers, theouter ends ofthe cylinders being open and their inner ends provided with pasder carrier on the valve, the cylinder carrier rotating on the valve to place the low pressure cylinder in communication with one of the coolers and'thento place this cooler in communication' with the high pressure cylinder K and then the high pressure cylinder in communication with the second cooler from which the compressed air is delivered;

connected thereto, and two gas coolers, the

cylinders being, arranged in diametrically opposed high pressure and low pressure pairs in the carrier and *the carrier provided with passages leading from the cylinders to oppositely disposed ports in the valve about which it rotates to place first one low pressure cylsages leading to a bearing face (ifthe cylininder in communication with one of the coolers and then to place this cooler in com- 1 .secured to one of the end plates of the cas-' and then thehigh pressure cylinder in communication with the second cooler from which the compressed air is delivered, and during the same sequence of operations to place the. opposite low pressure cylinder in communication with the air supply and the opposite high pressure cylinder in communication with the corresponding low pressure cylinder."

7. A rotary airor gas compressor, com- .prising a casing having cooling water circulatmg ackets and passages, High and low pressure cylinders a rotary cylinder carrier, a fixed cylindrical valve having inlet and outlet air or gas-passages and cooling water circulating passages, and a gas cooler,'the cylinder carrier being provided with passages leading from the cylinder to the valve about which it rotates to place the low pressure cylinder in communication with the cooler and the cooler in communication with the high pressure cylinder, and then the high pressure cylinder in communication with the compressed air delivery outlet, the cooling jacket and passages of the casing being permanently in series with those of the valve.

8. A rotary air or gas compressor in accordance with claim 1, having one or more pairs of radial low pressure cylinders disposed co-axially on opposite sides of the. valve, and one or more pairs of similarly disposed high pressure cylinders arranged at right angles to. the low pressure cylinders on the carrier.

- 9. A rotary air or gas compressor in ac-- cordance with claim 1, wherein the coolers are in the form of sinuous passages in a plate ing of the compressor.

10. A rotary an or gas compressor comprising high and low pressure cylinders, a

rotary cylinder carrier, a fixed cylindrical valve having inlet and outlet air or gas passages and lubricating passages to annular grooves in its cylindrical surface, a gas cooler and an oil separator, the cylindrical carrier being provided with passages leading from the cylinder to the valve about which it rotates to place the low pressure cylinder'in communication with the cooler and the cooler incommunication with the high pressure cylinder, and then the high pressure cylinder in communication with the separator, the oil from the separator being forced by the compressed air through the lubricating passages to the annular grooves in the valve face.

11. A rotary air or gas compressor, comprising high and low' pressure cylinders, a

i rotary cylinder carrier, 9. fixed cylindrical valve having inlet and outlet air or gas passages and lubricating passages to its cylindricallsurface, a gas cooler and an oil sepa- 17,aoe V rator, the cylinder carrier being provided with passa es leading from the cylinder to the valve a out which it rotates to place the low pressure cylinder in communication with the cooler, and the cooler in communication with the high pressure cylinder, then the high pressure cylinder in communication with the separator, the oil from the separator being forced by the compressed air through the lubricating passages of the valve.

12. A rotary air or gas compressor as in claim 1, having a rotating cylinder carrier carrying a number of radial cylinders rotating on a fixed cylindrical valve on which the ports and passages are so arranged that air or gas from each low pressure cylinder is discharged through intermediate receivers into higher pressure cylinders and finally into the separator or discharge pipe.

13. A rotary air or gas compressor comprising a pair of high and low pressure cylinders, reciprocating pistons therein, a rotary cylinder carrier, a fixed cylindrical valve having inlet and outlet passages, two airor gas coolers, an oil separator, and means for reciprocating the pistons in the cylinders, the cylinder carrier being provided with passages leading from the cylinders to the valve about which it rotates to place the low pressure cylinder in communication with one of the coolers and then this cooler in communication with the high pressure cylinder and then the high'pressure cylinders in communication with the other cooler from which the compressed air is delivered to the oil separator.

14. A rotary air or gas com ressor comprising two pairs of high and ow pressure cylinders, reciprocating pistons therein, a. rotary cylinder carrier, a fixed cylindrical valve 'havinginlet and outlet passages, two air or nication with the high pressure cylinders, and. then the high pressure cylinders incommunication with the other cooler from which the compressed air is delivered to the oil separator.

of the coolers and then this cooler in coinmu- 15. A rotary air or gas compressor com prising a pair of cylinders, reciprocating pistons therein, a rotary cylinder carrier, a fixed cylindrical valve having inlet and outlet passages, an air or gas cooler, an oil separator, and means for reciprocating the pistons in the cylinders, the cylinder carrier being provided with passages leading from the cylinders to the valve about which it rotates to place the cylinders in communication with the cooler from which the compressed airis delivered to the oil separator.

eccentrics, a fixed cylindrical valve having inlet and outlet passages, the cylinders being arranged radially in the carrier with their outer ends open and their inner ends communicating bypassages to a bearing face of the carrier running on the fixed valve and registering during the rotation of the carrier with openings in the valve leading to the passages therein and the gudgeon pins provided on the under sides with undercut grooves whereby they extend down the sides of the cylinders and extend laterally into the grooves of the grooved rings,

17 A rotary air or gas compressor comprising a casing having end plates, a rotary cylinder carrier mounted therein, radial high and low pressure cylinders carried by said carrier, reciprocating pistons in said cylin ders, means for reciprocating said pistons, a fixed central valve, an air or gas cooler having sinuous passages, the passages in the fixed valve being so arranged that the air or gas from each low pressure cylinder is discharged through the sinuous passages of the cooler into the high pressure cylinder, the sinuous passages being formed inone of the end plates of the casing.

18. A rotary air or gas compressor co1nprising a rotary cylinder carrier, radial cylinders mounted therein, reciprocating pistons in said cylinders, gudgeon pins carrying rollers mounted on said pistons, a fixed central valve, an air or gas receiver, a pair of fixed eccentrics, a pair of laterally grooved and opposite- 1y disposed rings mounted on said fixed eccentrics, the passages in the valve being'so arranged that air or gas from the cylinder is discharged into the receiver, and the gudgeon rollers being arranged to run in the grooves of the grooved rings which rotate freely on the fixed eccentrics thereby reciprocating the pistons.

19. A rotary air or gas compressor comprising a rotary cylinder carrier, radial cylinders provided with passages leading to a bearing face of the carrier mounted on said carrier, pistons in said radial cylinders having laterally extending gudgeon pins provided with I r llers, a pair of oppositely disposed and grooved rings of fixed eccentricity, a fixed central valve, the valves having inlet and outlet passages extending to'the bearing face of the valve onwhich rotates the cylinder carrier so that during the rotation of the carrier the passages in the cylinder and valve will register to effect the compression and delivery ofthe air or gas and the reciprocation ofthe pistons being effected by the rollers of the gudgeon pins extending into the grooves of the rings of fixed eccentricity.

20. A rotary air motor or compressor comprising radial cylinders, a central valve about which said cylinders rotate, reciprocating pistons in-said cylinders, gudgeon pins mounted in said pistons, grooved rings rotatable on fixed eccentrics relative to the central valve into the grooves of which the gudgeon pins extend laterally, said rings being entirely separate frolneach other, but cooperating in unison with the gudgeon pins to reciprocate the pistons.

In witness whereof we aifix our signatures.

HENRY SELBY HELE-SHAW. THOMAS EDWARD BEACHAM.