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Publication numberUS2291636 A
Publication typeGrant
Publication dateAug 4, 1942
Filing dateOct 3, 1940
Priority dateOct 3, 1940
Publication numberUS 2291636 A, US 2291636A, US-A-2291636, US2291636 A, US2291636A
InventorsMaurice D Kiczales, Kenneth R Nisbet
Original AssigneeMaurice D Kiczales, Kenneth R Nisbet
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fluid compressor
US 2291636 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

8 s m m mw w .w w -mw 5% N m M N. b/Mm 2 m VOH s hw. 3 1 /1L A ,l H mm M k w Aug. 4, 1942. M. D KlczALEs ETAL FLUID COMPRESSOR Filed on. 3, 1940 1942- M. D, KICZALES E L 2,291,636

FLUID COMPRESSOR 7 Filed Oct. :5, 1940 s Sheets-Sheet 3 /N VEN TORS FTTORNE Y Patented Aug. 4, 1942 FLUID COMPRESSOR Maurice D. Kiczales, Washington, D. 0., and I Kenneth R. Nisbet, Arlington, Va.

' Application October 3, 1940, Serial No. 359,474

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) 20 Claims.

The invention-described herein may be manufactured and used by or for the Government for governmental purposes, without the payment to us of any royalty thereon.

This invention relates to fluid compressors for refrigeration purposes and air supply and the primary object thereof is to provide a fluid compressor which is compact having but few parts whereby the compressor is adapted to occupy but a small amount of space and which is constructed in such a manner that a,wide latitude in the assembly of the parts thereof is permitted for various capacities desired.

Another object of the invention is to provide a fluid compressor having parts which may be constructed at comparatively small expense, which has its several parts assembled in a, manner as to minimize the opportunity for wear, breakage or derangement and which is practical and efficient in use.

With the above and other objects and advantages in view, the invention consists in certain features of construction and operation of parts which will hereinafter appear and in which:

Fig. 1 is a side elevation of dual horizontally extending compressor units, including gear assemblies covered by casings and directly driven by a prime mover;

Fig. 2 is a side elevation thereof having a belt drive;

Fig. 3 is a side elevation of a single vertical extending compressor unit and prime mover;

Fig. 4 is an end view of Fig. 1;

Fig. 5 is a partial sectional view of Fig. 1 with the casings for the gear assemblies removed therefrom;

Fig. 6 is an enlarged cross-sectional view through one gear assembly taken on the line t8 of Fig. 5;

Fig. 'l is an enlarged sectional detail view of a piston pinion used in carrying out the invention with cooperating parts of the piston pinion broken away and illustrating the construction of the piston pinion and the manner of rotatably supporting it on a compressor unit;

Fig. 8 is a front view of a master gear including a toothed ring also used in carrying out the invention; and

Fig. 9 is a vertical sectional view of the master I a prime mover B operatively positioned between the dual compressor units and mounted on a floor or other suitable base I. The prime mover B, which may be of any suitable type such as a gas or Diesel engine or electric motor, is provided with flange portions 2 having integral end plates 3 thereon as illustrated in Fig. 5, and a shaft 4 extending from each end thereof.

The compressor units A may be operated by a belt drive as illustrated in Fig. 2 wherein the inner ends of the compressor units are suitably spaced leaving the central portion of a shaft 4' exposed. Upon the central portion of the shaft 4' is mounted a pulley 5, which is adapted to be driven by a belt 6 which is in turn adapted to be driven by a prime mover (not shown).

It will be readily understood that only one compressor unit A driven by aprime mover B may be employed which may take the form illustrated in Fig. 3 wherein one compressor unit and a prime mover are illustrated as extending in a vertical direction for use in places where only a smallamount of space is available.

Each of the compressor units A, illustrated in Figs. 1 and 2, comprises a gear assembly indicated generally by C in Figs. 5 and 6, and a cylinder assembly D. The gear assemblies C of the compressor units may be enclosed within casings I as in Figs. 1 and 2, and the cylinder assemblies D, each comprises a plurality of cylinders 8, which are arranged in a squirrel cage manner around at ,intervals on a cylinder plate 9 provided on the outer end of each of the gear assemblies C, with the cylinders 8 of one compressor unit A extending horizontally outwardin a diametrically opposite direction from the cylinders of the other compressor unit.

Referring more particularly to Fig. 5, which is a partial sectional view of Fig. 1 with the casingsmaster or main beveled gear III which meshes.

with a plurality of beveled pinions H, each having a counterweight I2 thereon, and rotatably mounted on a supporting member in the form of a cross bar l3 which extends across an integral end plate 3 on the flange portion 2, and a cylinder plate 9 on the outer end of the gear assemblies C. The pinions H are arranged in mesh I supporting members l3 and is provided with a reduced portion i5 thereon which is adapted to fit into a well I6 containing a washer I'I formed on each supporting member. A reduced threaded end portion is is also provided on the outer end of the reduced portion i5 of each shaft ll of the pinions II, which threaded end portion l8 extends through one of the supporting members and is held in place thereon by a washer and nut construction i 9. The pinions II are also each provided with a suitably mounted piston pin or stud 20 which extends through an opening 29 formed in the pinions, as illustrated in Fig. 7.

The openings 29 in the pinions H are offset from the pinion shafts l4, whereby the piston pins 20 mounted therein are caused to serve as cranks for imparting reciprocating movements through connecting rods 2| to pistons 22 which are adapted to reciprocate in the cylinders I of the cylinder assemblies D. The piston pins 20 to which the inner ends of the rods 2| are connected may be mounted at different radii from the center of the pinions II to provide different lengths of strokes of the pistons 22 by means of forming an additional opening 30 in each of the pinions, as illustrated in Fig. '7, which opening 30 is of a less radius to the center of the pinions than the opening 29 therein. It will be readily understood that any suitable number of additional openings having different radii from the center of the pinions may be provided, whereby the piston pins 20 may be mounted therein and the rods 2| connected thereto for imparting different lengths of strokes to the pistons 22.

In order to absorb shock of the downward stroke of the master or main gear iii, an inner ring gear 23 having teeth 24 thereon, as more particularly illustrated in Figs. 8 and 9, is provided thereon. The ring gear 23 is adapted to be adjusted rotatably on the master or main gear in an amount approximately equal to the back lash of the gear teeth 25 on the master gear and after the ring gear 23 has been rotated a suflicient amount it maybe held in its adjusted position on the master gear by means of rivets 26 or the like and may also be welded thereto as indicated at 21.

The number of cylinders 8 employed on the compressor units A is only limited by the number of pinions l I which may be operated by the master gear l and hence the number of pistons 22 operated by the pinions, but the preferred number of cylinders used will not exceed four for each compressor unit, as illustrated, thus the actual number will be one, two, three or four cylinders depending on the capacity required. In the event the number of cylinders is less than four, the usual cylinder openings 28 shown in Fig. in the cylinder base plates 9 are merely plugged, and those cylinder openings abandoned or reserved for further use.

It will be obvious that using cylinders of different sizes will permit an exceedingly large variation in compression capacity, as for example, one compressor unit A may have one, two, three or four cylinders, which with the belt drive as in Fig. 2 and the permissible speed variations by using pulleys of different diameters, offers many different capacity ratings. Then since the sec ond compressor unit A may be utilized with the are further increased in a corresponding manner. Again with only two cylinder sizes as standard, the possible combinations are unlimited for practical purposes. The direction of rotation of the prime mover B and hence the shafts d in Fig. i or the shaft 4' in Fig. 2, and the master gear i0 and pinions ii is immaterial.

In employing the improved compressors they may be standardized by using only two differently rated gear assemblies C, each rating being based on a complete four cylinder assembly. There would be a maximum of four piston pinions II and one master gear "I for each compressor unit. The diameter of the piston pinions should all be the same.

Each piston pinion II and master gear I. would be constructed essentially as described above and illustrated more particularly in Figs. 7 to 9 inclusive and'it would be preferable if the master gear I be nitrided and the piston pinions ll be case-hardened to equalize wear which would be negligible, if driven at a low speed and properly lubricated. The master gear ll may be nitrided by an aluminum alloy steel treated by ammonia gas at a relatively high constant temperature. In this case the treatment shall be such that the master gear Ill exceeds that of the case-hardened piston pinions II by at least 20%. However, the master gear and piston pinions may be all case-hardened or may be of the'chrome nickel steel type hardened all through or may be of the standard steel type since the speed thereof same pulley arrangement, the capacity ratings 76 is slow and may be properly lubricated. Under these conditions, wear is not a matter of great importance, as it will be negligible and even less so when nitrided.

It will thus be seen that there is herein provided a novel compressor which is well adapted for all the purposes indicated. Even though there has been herein shown and described certain features of construction and operation of parts, it is nevertheless to be understood that various changes may be made therein if the changes do not depart from the claims.

Having described our invention, what we claim as new and wish to secure by Letters Patent is:

1. In a fluid compressor, the combination of a frame including supporting members. a plurality of cylinders mounted on said frame, a power driven shaft, a driving member mounted on said shaft, a plurality of driven members arranged in spaced formation around and meshing with said driving member, said driven members mounted for rotation on said supporting members, pistons in said cylinders and rods connecting one of each of said driven members with one of each of said pistons.

2. In a fluid compressor, the combination of a frame including supporting members and an end member, a plurality of cylinders mounted on said end member, a power driven shaft, a driving gear mounted on said shaft, a plurality of pinions directly meshing with said gear and mounted for rotation on said supporting members, said pinions arranged around on said gear at intervals with their axes at right angles thereto, pistons in said cylinders and rods connecting one of each of said pinions with one of each of said pistons.

3. In a fluid compressor, the combination of a frame including supporting members and an end plate, a plurality of cylinders mounted on said end plate at 90 intervals, a prime mover having a shaft thereon, a driving gear mounted on said shaft, said gear being at a right angle to said cyl- 'formation around and meshing with inders, a plurality of pinions arranged in spaced said gear, said pinions mounted for rotation on said supporting members with their axes-at right angles to said gear and cylinders, pistons in said cylinders and rods connecting one of each of said pinions with one of each of said pistons.

4. In a fluid compressor, the combination of a frame including supporting members and an end plate, a plurality of cylinders mounted on and extending from said end plate, a power driven shaft extending into said frame and in the same direction as said cylinders, a driving gear mounted on said shaft, a plurality of pinions arranged in spaced formation and meshing with said gear, said pinions mounted for rotation on said supporting members with their axes at right angles to said gear and cylinders, a counter-weight on each of said pinions, pistons in said cylinders and rods connecting one of each of said pinions with one of each of said pistons.

5. In a fluid compressor, the combination of a frame including supporting members and an end plate, a plurality of cylinders mounted on and extending from said end plate, a power driven shaft extending into said frame and in the same direction as said cylinders, a main driving gear mounted on said shaft, an auxiliary gear mounted on said main and auxiliary gear, a plurality of pinions arranged in spaced formation around and meshing with said main gears, said pinion mounted for rotation on said supporting members with their axes at right angles to said main gear and cylinders, pistons in said cylinders and rods connecting one of each of said pinions with one of each of said pistons.

6. In dual fluid compressors, the combination of a prime mover including shafts, one of each of said shafts extending from each end of the prime mover, a gear assembly unit including a frame having supporting members and an end plate thereon adjacent to each end of said prime mover, a plurality of cylinders mounted on the end plate of each of the gear assembly units, gears, one of each of said gears mounted on one of each of said shafts, a plurality of pinions arranged in spaced formation around and meshing with each of said gears, said pinions mounted for rotation on said supporting members of each of said gear assembly units with their axes at right angles to said gears, pistons in said cylinders and rods connecting one of each of said pinions with one of each of said pistons.

7. In dual fluid compressors, the combination of a prime mover having a shaft extending from each end thereof, gear assembly units, one of each of said gear assembly units including a frame having supporting members and an end plate thereon adjacent to each end of said prime mover, a plurality of cylinders mounted on the end plate of one of each of said gear assembly units, one of each of said shafts of said prime mover extending into one of each of the frames of said gear assembly units, a main bevel gear including an adjustably mounted bevel ring gear mounted on each of said shafts at right angles to said cylinders, a plurality of bevel pinions having counterweights thereon, said pinions arranged in spaced formation around and meshing with said main and ring gears, said pinions mounted for rotation on said supporting members with their axes at right angles to said main gears, pistons in said cylinders and rods con necting one of each of said pinions with one of each of said pistons.

8. In dual fluid compressors, the combination of a prime mover having a shaft extending from each end thereof, gear assembly units. one of each of said gear assembly units including .a frame having supporting members and an end plate thereon adjacent to each end of said prime mover, a plurality of cylinders mounted on the end plate of one of each of said gear assembly units, one of each of said shafts of said prime mover extending into one of each of the frames of said gear assembly units, a main bevel gear including an adjustably mounted ring gear mounted on each of said shafts at right angles to said cylinders, a plurality of bevel pinions having counterweights thereon, said pinions arranged in spaced formation around and meshing with said main gears, said pinions mounted for rotation on said supporting members with their axes at right angles to said main gears, pistons in said cylinders, rods connecting one of each of said pinions with one of each of said pistons, and means formed on each of said pinions for attaching said connecting rods at different points thereon whereby said connecting rods are adapted to impart different length of strokes to said pistons.

9. A fluid compressor comprising in combination, a frame, includng supporting members, a driving member, and means for increasing or reducing the amount of compression produced by said compressor, said means including a plurality of removable driven members mounted for rotation on said supporting members, said driven members arranged in spaced formation around and directly actuated by said driving member, a plurality of removable cylinders mounted on said frame, removable pistons in said cylinders and removable rods connecting one of each of the pistons with one of each of said driven members, whereby a number of cylinders and pistons of various sizes may be used on the fluid compressor for producing the amount of compression required.

10. A fluid compressor comprising in combination, a frame, including supporting members, a plurality of cylinders mounted on said frame in a squirrel cage manner, pistons in said cylinders, a plurality of driven members arranged in spaced formation around and directly actuated by said driving member, said driven members mounted for rotation on said supporting members and rods connecting one of each of said driven members with one of each of said pistons.

11. A fluid compressor comprising in combination, a frame, including supporting members, a plurality of cylinders mounted on said frame, a power driven master bevel gear, a plurality of bevel pinions arrangedin spaced formation around and meshing with said master bevel gear, said pinions mounted for rotation on said supporting members, a stud on each of said pinions, pistons in said cylinders, and rods connecting one of each of said pistons with one of each of the studs on one of each of said pinions.

12. A fluid compressor comprising in combination, a frame, including supporting members, .a plurality of cylinders mounted on said frame, a power driven master bevel gear, a plurality of bevel pinions arranged in spaced formation around and meshing with said bevel gear, said pinions mounted for rotation on said supporting members, a stud detachably mounted on one of each said pinions, pistons in said cylinders, rods connecting one of each of said pistons with one of each of the studs on one of each of said pinions,

and means formed in said pinions for attaching said studs at different points thereon, whereby said rods may be connected at different points on said pinions for imparting different lengths of strokes to the pistons in said cylinders.

13. A fluid compressor comprising in combination, a driving means having shafts extending therefrom, each of said shafts having a bevel gear assembly operatively connected to a plurality of pistons, said pistons operating respectively by reciprocating motion in cylinders arranged in a squirrel cage manner about an axis coinciding with the axis of said driving means, each of said gear assemblies comprising three or more bevel gears arranged in spaced formation around and meshing with a main bevel gear, said driving means being located between said gear assemblies.

14. Dual fluid compressors comprising in combination, a driving means, including ends having shafts extending in opposite directions therefrom, a gear assembly unit adjacent to each of the ends of said driving means, each of said gear assembly units including a bevel gear mounted on one of said shafts, a plurality of bevel pinions arranged in spaced formation around and meshing with said bevel gear, said pinions rotatably -mounted on said gear assembly unit with their axesat right angles to said gear, pistons operatively connected to said pinions, said pinions operating respectively by reciprocating motion in cylinders arranged about an axis coinciding with the axis of said driving means. I

15, A fluid compressor comprising in combination,a driving means including ends having shafts extending in opposite directions therefrom, a gear assembly unit including a frame adjacent to each of the ends of said driving means, each of said gear assembly units including a bevel gear mounted on one of said shafts, and a plurality of bevel pinions arranged in spaced formation around and meshing with said bevel gear, said pinions rotatably mounted on said frame with their axes at right angles to said shafts, pistons operatively connected to said pinions, said pistons operating respectively by reciprocating motion in cylinders arranged on said frame in a squirrel cage manner about an axis coinciding with the axis of said driving means.

16. In a fluid compressor, the combination with a frame, a plurality of cylinders mounted on said frame, a power driving member, a plurality of driven members quadrangularly arranged around and meshing with said driving member, said pinions mounted for rotation on said frame, pistons mounted in said cylinders and connected to be operated by said driven members.

17. In a fluid compressor, the combination of a frame, a plurality of cylinders mounted on said frame, a power driven main gear having a ring gear mounted thereon, a plurality of pinions quadrangularly arranged around and meshing with said main and ring gears, said pinions mounted for rotation on said frame, pistons mounted in said cylinders and connected to be operated by said pinions.

18. In a fluid compressor, the combination of a frame, a plurality of cylinders mounted on said frame, a main gear, a plurality of pinions quadrangularly arranged around and meshing with said main gear, said pinions having counterweights thereon and mounted for rotation on said frame, pistons mounted in said cylinders and connected to be operated by said pinions.

19. In a fluid compressor, the combination of a frame, a plurality of cylinders mounted on said frame, a main gear, a plurality of pinions quadrangularly arranged around and meshing with said main gear, pistons-in said cylinders, rods connecting one of each of said pinions with one of each of said pistons, and means forms-d on each of said pinions for attaching said connecting rods at different points thereon, whereby said connecting rods are adapted to impart different length of strokes to said pistons.

20. A fluid compressor comprising in combination a driving means having shafts extending therefrom, each of said shafts having a gear assembly including a main gear, and a plurality of pinions quadrangularly arranged around and meshing with said main gear, said pinions operatively connected to a plurality of pistons operating respectively by reciprocating motion in cylinders arranged about an axis coinciding with the axis of said driving means.

KENNETH R. NISBET. MAURICE D. KICZALES.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4632081 *Aug 1, 1983Dec 30, 1986Giuliani Robert LGiuliani modular engine improvement
US5429080 *Dec 13, 1993Jul 4, 1995Evestar Technologies, Inc.Compact internal combustion engine
Classifications
U.S. Classification74/44, 91/507, 123/DIG.700, 123/DIG.800, 92/71
International ClassificationF04B27/08
Cooperative ClassificationF04B27/0895, Y10S123/07, Y10S123/08
European ClassificationF04B27/08D7