US2041121A - Rotary engine, pump, and the like - Google Patents

Rotary engine, pump, and the like Download PDF

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Publication number
US2041121A
US2041121A US736267A US73626734A US2041121A US 2041121 A US2041121 A US 2041121A US 736267 A US736267 A US 736267A US 73626734 A US73626734 A US 73626734A US 2041121 A US2041121 A US 2041121A
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Prior art keywords
piston
rotary
shutter
annular chamber
walls
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US736267A
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Sr John Fareso
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Classifications

    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F01C1/20—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with dissimilar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/40—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 F01C1/08 or F01C1/22 and having a hinged member
    • F01C1/46—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 F01C1/08 or F01C1/22 and having a hinged member with vanes hinged to the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/10—Sealings for working fluids between radially and axially movable parts

Definitions

  • This invention relates to rotary engines or pumps of the kind which employ a rotary piston member operating in an annular chamber in cooperation with an abutment member which seals the chamber during rotation of the piston so as to prevent communication between the outlet and inlet ports and provide the working chamber.
  • the object of the invention is to provide an improved engine of the above kind which is efficiently sealed against leakage.
  • Figure 1 is an inside elevational side view of one form of engine according to the invention.
  • Figure 2 is an outside elevational side view of the engine illustrated in Figure 1,
  • Figure 3 is a section through the line 3-3 of Figure 2 looking in the direction of the arrows,
  • Figure 4. is an end view of Figure 1 with the top part of the casing broken away
  • Figure 5 is a sectional plan on the line 5-5 of Figure 1, 1
  • Figure 6 is an inside elevational View of a modified form of engine
  • Figure '7 is a section on the line 1-1 of Figure 6,
  • Figure 8 is an inside elevational view of a further modification
  • Figure 9 is a fragmentary sectional view of a detail
  • Figure 10 is an outside elevational view showing a modified driving arrangement.
  • a rotary engine, or pump comprising a rotary member I having a substantially radially arranged vane or piston element 2 which operates in an annular chamber 3 formed within the casing 4 and co-operates with an oscillatory shutter member 5 ( Figures 1 to 5) carried upon a spindle 6 within a chamber 1.
  • the shutter is formed with an arcuate portion 5 which is guided for movement into and out of the annular chamber 3 by having its opposite ends arranged to engage within arcuate slots 5* formed in the opposed end walls 3 of the casing.
  • the arcuate shutter portion is arranged to pass between the inlet and exhaust ports HI and II respectively in the casing 4 so that when the shutter is in the closed position these ports are isolated from one another.
  • the arcuate portion of the shutter is fitted, around the bottom and the side edge portions thereof which extend into the annular chamber 3 upon movement of the shutter, with a sealing plate 5 which is of U-shape ( Figure 4) and is resiliently held within recesses in the said shutter edges by springs 5 seated within such recesses so as to lie against and behind the sealing plate.
  • a further sealing plate 8 may be fitted upon the front face of the arcuate shutter portion 5 so as to provide a seal between the shutter face and the adjacent side of the slot 9 in the casing through which the shutter moves. This sealing plate 8 is also held Within a recess in the said shutter face and is resiliently seated within the recess.
  • Movement of the shutter at the appropriate moments may be arranged to take place by any suitable means and in the particular example shown this is effected by a pair of cams l2, upon the shaft I5 carrying the rotary piston 2, engaging with the free ends of a pair of rods I3 arranged on either side of the casing 4 and connected at their other ends with links M attached to the spindle 6.
  • the arrangement is such that during each rotation of the shaft l5 the cams thereon engage with the ends of the rods l3 and lift the same against the action of springs IE to lift the shutter and so move the arcuate portion 5 thereof out of the annular chamber 3 and this opening movement of the shutter is timed to take place immediately before the piston 2 reaches the path of the arcuate shutter portion; when the piston moves past the shutter path the cams leave the rods l3 and the shutter immediately closes by the action of the springs Hi.
  • the two rotary elements I and I! are geared together by gears l 9, 20, as shown in Figure 7 or, as shown in Figure 10, they may each be geared to a common driven shaft 2
  • the rotary abutment member I! is provided with a radial piston 23 adjacent to the recess l8 and which piston enters a similar recess 24 formed in the rotary member I adjacent to the piston 2.
  • the piston 2 is provided with means for efiecting a fluid-tight seal between it and the walls of the chamber 3 and such sealing means may consist of a pair of slides which are normally urged, by springs 26 for example, into contact with these walls.
  • Each slide is formed with a portion 25 recess and serving to maintain a fluid-tight oint which engages within a groove in the outer peripheral edge portion of the piston and another portion which engages within a groove in the adjacent side of the piston.
  • centrifugal means for reducing the pressure of the slides on the walls of the annular chamber 3 at elevated speeds of rotation of the rotary member I.
  • Such centrifugal means consist of a weight 21, arranged within the rotary member I on the side of the axis thereof opposite to that where the piston 2 is located, and flexible connections 28 between the said weight and the portions 25 of the slides whereby both a retraction of the slides from the cylindrical wall of the annular chamber 3 and a decrease in the effective width of the slide may be effected by the centrifugal forces generated at high speed which forces may be controlled by a spring 29 connected between the outer end of the weight and the rotary member I..
  • the portions 25 of the slides may be formed with lateral extensions 25 which engage with an annular slot 33 in the chamber walls.
  • the latter may be fitted with annular plates seated upon springs 3
  • a similar sealing ring is provided for engagement with the end walls of the rotary abutment member 11.
  • a sealing plate 34 may be provided within a recess in the portion of the casing within which the rotary abutment member I"! rotates, this sealing plate being resiliently seated within the between the cylindrical wall of said member and the casing.
  • the chamber may be fitted with a suction valve 32 adapted to open when the pressure falls below atmosphere.
  • a rotary engine according to claim 1 wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable within a slot in the piston.
  • a rotary engine according to claim 1 wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable in a slot in the piston, adapted normally to urge the slide parts into contact with the cylindrical wall of the annular chamber.
  • a rotary engine according to claim 1 wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable in a slot in the piston, said slot being conformed in two parts so that the slide is capable of extension to ensure contact of the sides of the slide with the circular walls of the annular chamber, and resilient means adapted normally to urge the slide parts into contact with the cylindrical wall of the annular chamber.
  • centrifugal means operates by virtue of a weight arranged on the side of the axis of rotation of the rotary member opposite to that of the piston.
  • a rotary engine as claimed in claim 1, wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable in a slot in the piston and a weight is connected to the slide so that both a retraction of the slide from the cylindrical wall of the annular chamber and a decrease in the effective width of the slide may be effected by the centrifugal force generated at high speed.
  • a rotary engine according to claim 1 wherein means for counteracting any reduction in pressure in the annular chamber below atmospheric pressure consist of a valve in the wall o the annular chamber adapted to open when pressure falls below atmospheric.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

May 19, 1936. J F R so, 5R 2,041,121
' ROTARY ENGINE, PUMP AND THE LIKE I Filed July 20, 1954 5 SheetsSheet"l J FIELYGSO May 19, 1936. J E 5 2,041,121
ROTARY ENGINE, PUMP AND THE LIKE Filed July 20, 1934 3 Sheets-Sheet 2 J Wa 8 J. FARESO, SR
ROTARY ENGINE, PUMP AND THE LIKE May 19, 1936.
Filed July 20, 1954 3 Sheets-Sheet 3 Qfl w, 0% W o S w T o 0 ORV/v. M 0 \l7 1 3M V J0 F J x 1 I M1. 1d & M Q H E o O. 4 P? Patented May 19, 1936 UNITED STATES PATENT OFFICE John Fareso, Sr., North Kensington, London, England Application July 20, 1934, Serial No. 736,267 In Great Britain July 20, 1933 7 Claims.
This invention relates to rotary engines or pumps of the kind which employ a rotary piston member operating in an annular chamber in cooperation with an abutment member which seals the chamber during rotation of the piston so as to prevent communication between the outlet and inlet ports and provide the working chamber.
The object of the invention is to provide an improved engine of the above kind which is efficiently sealed against leakage.
The invention accordingly consists in the features to be hereinafter described or indicated and claimed.
In the accompanying drawings,
Figure 1 is an inside elevational side view of one form of engine according to the invention,
Figure 2 is an outside elevational side view of the engine illustrated in Figure 1,
Figure 3 is a section through the line 3-3 of Figure 2 looking in the direction of the arrows,
Figure 4. is an end view of Figure 1 with the top part of the casing broken away,
Figure 5 is a sectional plan on the line 5-5 of Figure 1, 1
Figure 6 is an inside elevational View of a modified form of engine,
Figure '7 is a section on the line 1-1 of Figure 6,
Figure 8 is an inside elevational view of a further modification,
Figure 9 is a fragmentary sectional view of a detail, and
Figure 10 is an outside elevational view showing a modified driving arrangement.
In carrying the invention into eifect in one convenient manner as illustrated in the drawings there is provided a rotary engine, or pump, comprising a rotary member I having a substantially radially arranged vane or piston element 2 which operates in an annular chamber 3 formed within the casing 4 and co-operates with an oscillatory shutter member 5 (Figures 1 to 5) carried upon a spindle 6 within a chamber 1.
The shutter is formed with an arcuate portion 5 which is guided for movement into and out of the annular chamber 3 by having its opposite ends arranged to engage within arcuate slots 5* formed in the opposed end walls 3 of the casing. The arcuate shutter portion is arranged to pass between the inlet and exhaust ports HI and II respectively in the casing 4 so that when the shutter is in the closed position these ports are isolated from one another.
The arcuate portion of the shutter is fitted, around the bottom and the side edge portions thereof which extend into the annular chamber 3 upon movement of the shutter, with a sealing plate 5 which is of U-shape (Figure 4) and is resiliently held within recesses in the said shutter edges by springs 5 seated within such recesses so as to lie against and behind the sealing plate. A further sealing plate 8 may be fitted upon the front face of the arcuate shutter portion 5 so as to provide a seal between the shutter face and the adjacent side of the slot 9 in the casing through which the shutter moves. This sealing plate 8 is also held Within a recess in the said shutter face and is resiliently seated within the recess.
Movement of the shutter at the appropriate moments may be arranged to take place by any suitable means and in the particular example shown this is effected by a pair of cams l2, upon the shaft I5 carrying the rotary piston 2, engaging with the free ends of a pair of rods I3 arranged on either side of the casing 4 and connected at their other ends with links M attached to the spindle 6. The arrangement is such that during each rotation of the shaft l5 the cams thereon engage with the ends of the rods l3 and lift the same against the action of springs IE to lift the shutter and so move the arcuate portion 5 thereof out of the annular chamber 3 and this opening movement of the shutter is timed to take place immediately before the piston 2 reaches the path of the arcuate shutter portion; when the piston moves past the shutter path the cams leave the rods l3 and the shutter immediately closes by the action of the springs Hi.
In the construction according to Figures 6 and 7 the rotary abutment II has arecess l8 into which the piston 2 enters without contact actually taking place between the piston and the recess.
The two rotary elements I and I! are geared together by gears l 9, 20, as shown in Figure 7 or, as shown in Figure 10, they may each be geared to a common driven shaft 2| by means of bevel gears 22 so that the drive may be taken equally from each rotary element.
In the construction according to Figure 8 the rotary abutment member I! is provided with a radial piston 23 adjacent to the recess l8 and which piston enters a similar recess 24 formed in the rotary member I adjacent to the piston 2.
The piston 2 is provided with means for efiecting a fluid-tight seal between it and the walls of the chamber 3 and such sealing means may consist of a pair of slides which are normally urged, by springs 26 for example, into contact with these walls. Each slide is formed with a portion 25 recess and serving to maintain a fluid-tight oint which engages within a groove in the outer peripheral edge portion of the piston and another portion which engages within a groove in the adjacent side of the piston. Connected with each slide is centrifugal means for reducing the pressure of the slides on the walls of the annular chamber 3 at elevated speeds of rotation of the rotary member I. Such centrifugal means consist of a weight 21, arranged within the rotary member I on the side of the axis thereof opposite to that where the piston 2 is located, and flexible connections 28 between the said weight and the portions 25 of the slides whereby both a retraction of the slides from the cylindrical wall of the annular chamber 3 and a decrease in the effective width of the slide may be effected by the centrifugal forces generated at high speed which forces may be controlled by a spring 29 connected between the outer end of the weight and the rotary member I.. To prevent the slides from moving outwardly when the piston enters the recess 18 (Figures 6 and '7) the portions 25 of the slides may be formed with lateral extensions 25 which engage with an annular slot 33 in the chamber walls.
A similar centrifugally controlled seal is provided upon the piston 23 of Figure 8.
To ensure fluid-tight contact between the end walls of the rotary member I and the adjacent walls of the chamber 3 the latter may be fitted with annular plates seated upon springs 3| within annular recesses in the said chamber walls. A similar sealing ring is provided for engagement with the end walls of the rotary abutment member 11.
. In the construction according to Figures 6 and '7 a sealing plate 34 may be provided within a recess in the portion of the casing within which the rotary abutment member I"! rotates, this sealing plate being resiliently seated within the between the cylindrical wall of said member and the casing.
To counteract any reduction in pressure in the annular chamber 3 below atmospheric pressure the chamber may be fitted with a suction valve 32 adapted to open when the pressure falls below atmosphere.
I claim:
1. In a rotary engine having a rotary piston adapted to operate in an annular chamber in cooperation with an abutment which seals the chamber during rotation of the piston so as to prevent communication between the outlet and inlet ports and provide the working chamber, the
combination therewith of means associated with the piston member and movable relatively thereto for maintaing a seal between the walls of the annular space and the piston member, said means including centrifugal means operable to reduce the sealing pressure on the walls of the annular space at elevated speeds of rotation of the rotary member, and means for counteracting any reduction in pressure in the annular space below atmospheric pressure.
2. A rotary engine according to claim 1 wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable within a slot in the piston.
3. A rotary engine according to claim 1 wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable in a slot in the piston, adapted normally to urge the slide parts into contact with the cylindrical wall of the annular chamber.
4. A rotary engine according to claim 1 wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable in a slot in the piston, said slot being conformed in two parts so that the slide is capable of extension to ensure contact of the sides of the slide with the circular walls of the annular chamber, and resilient means adapted normally to urge the slide parts into contact with the cylindrical wall of the annular chamber.
5. A rotary engine according to claim 1, wherein the centrifugal means operates by virtue of a weight arranged on the side of the axis of rotation of the rotary member opposite to that of the piston.
6. A rotary engine as claimed in claim 1, wherein the means associated with the piston comprises a slide conforming to the walls of the annular chamber and movable in a slot in the piston and a weight is connected to the slide so that both a retraction of the slide from the cylindrical wall of the annular chamber and a decrease in the effective width of the slide may be effected by the centrifugal force generated at high speed.
7. A rotary engine according to claim 1 wherein means for counteracting any reduction in pressure in the annular chamber below atmospheric pressure consist of a valve in the wall o the annular chamber adapted to open when pressure falls below atmospheric.
JOHN FARESO, SR.
US736267A 1933-07-20 1934-07-20 Rotary engine, pump, and the like Expired - Lifetime US2041121A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244157A (en) * 1961-07-26 1966-04-05 Rotor Societa Meccanica Italia Rotary fluid engine with driven vanes, particularly for internal combustion engines
US3707340A (en) * 1969-10-23 1972-12-26 Saviem Device for reducing leakage in rotary engines at low running speeds
US5885065A (en) * 1997-02-19 1999-03-23 Long; Marshall Method and pump for pumping liquid containing solids
ES2143931A1 (en) * 1997-11-27 2000-05-16 Fernandez Escudero Juan Jose Rotary internal-combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244157A (en) * 1961-07-26 1966-04-05 Rotor Societa Meccanica Italia Rotary fluid engine with driven vanes, particularly for internal combustion engines
US3707340A (en) * 1969-10-23 1972-12-26 Saviem Device for reducing leakage in rotary engines at low running speeds
US5885065A (en) * 1997-02-19 1999-03-23 Long; Marshall Method and pump for pumping liquid containing solids
ES2143931A1 (en) * 1997-11-27 2000-05-16 Fernandez Escudero Juan Jose Rotary internal-combustion engine

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