WO1991015679A1 - Compresseur co-radial rotatif a ailettes - Google Patents

Compresseur co-radial rotatif a ailettes Download PDF

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Publication number
WO1991015679A1
WO1991015679A1 PCT/EP1990/000574 EP9000574W WO9115679A1 WO 1991015679 A1 WO1991015679 A1 WO 1991015679A1 EP 9000574 W EP9000574 W EP 9000574W WO 9115679 A1 WO9115679 A1 WO 9115679A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
vane
vanes
casing
revolution
Prior art date
Application number
PCT/EP1990/000574
Other languages
English (en)
Inventor
Mohammad Mahdavi Hezavehi
Khosrow M Ehr Garai
Faramarz Nasr Chaleshtary
Javad Mahdavi Hezavehi
Original Assignee
Mohammad Mahdavi Hezavehi
Khosrow M Ehr Garai
Faramarz Nasr Chaleshtary
Javad Mahdavi Hezavehi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mohammad Mahdavi Hezavehi, Khosrow M Ehr Garai, Faramarz Nasr Chaleshtary, Javad Mahdavi Hezavehi filed Critical Mohammad Mahdavi Hezavehi
Priority to PCT/EP1990/000574 priority Critical patent/WO1991015679A1/fr
Publication of WO1991015679A1 publication Critical patent/WO1991015679A1/fr

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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
    • 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
    • F04C18/344—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 inner member
    • F04C18/3448—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 inner member with axially movable vanes
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • 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
    • F04C18/3568—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 with axially movable vanes

Definitions

  • the invention relates to a rotary corradial-vane compressor in which its vanes with mechanically reciprocal motions having same distance from the center of rota ⁇ tion durimg entire revolution of rotor .
  • Compressors can be classified by the principle of operation under three main categories , in which the positive displacement type is of our interest in this concept.
  • Versatile needs in obtaining condensed gases for different fields and purposes in industries has resulted in the invention and utilisation of priliminary compres ⁇ sors based upon condensation of gas in lieu of releasing energy and not conversely. Therefore all compressors utilized in industry regardless of operation and type have been designed basically in such criteria; inother words, from thermodynamics point of view the mechanical irrevesibility is high in such compressors. This fact in it ⁇ self introduces frictions, presence of unproductive motions, and ultimately wasting energy in compressors.
  • the dead centers clearance between top surface of piston and cylinder head, limitation in speed for reciprocating com ⁇ pressors; abrasive friction between vanes and body, axial friction between rotor and body, uncontrollable movements of vanes against centrifugal and centripetal forces due to rotor revolutions and casing reactions respectively in slidevane types; and clearance between rotors, unfavourable shape of trapping elements, which facilitate possible escape of such trapped gases , and lubricating problems for screw-type compressors. All these factors axe the inherent problems of so called compressors.
  • the invention as claimed represents a substitution to remedy these failures.
  • the invention as characterized in claims accomplishes suction and compression cycles by its uniform motions of revolution in which its vanes with mechanically reciprocal motions parallel to the longitudinal axis of rotor and equal distances from the center of rotation slide on a circular sinusoidal surface and sweep up the existing gases consecutively on concave surface towards a convex surface where under restriction of created area condensation occurs.
  • Advantages of the invention can be summerized as montonous motions, high speed capacity, favourable chambers for trapping and compressing, and perfect dis ⁇ charging of condenced gases.
  • the compressor claimed can be easily converted into a compressed air motor without any modification and just by removing the non-return valve from the circuit and connecting the discharge of the compressor to compressed air reservoir, and of course with high effeciency beyond anticipation. There is no question that in such a case the direction of rotor will be reversed.
  • Figure 1 represents the arrangement of rotory corradial-vane compressor in as ⁇ Implementd case.
  • Figure 2 is an illustration of rotor, vane, and vane-assembly in conjunction with planetary gearing system.
  • Figure 3 shows the configuration of front cover and position of intake and outlet opening provided in the cover.
  • Figure 4 is a representation of planetary gearing system installed on rear end part of rotor and its conjunction with ring gear fixed in casing.
  • Figure 5 illustrtes the method of operation in which rotary corradial-vane com- pressor is shown in projected form.
  • Rotary corradial-vane compressor which based on curved surface and vanes allows a wide range of variety with respect to number of convex (concave) surfaces and vanes, but for the purpose of simplicity and restricting the argument a unit with two convex (concave) surfaces and five vanes goes under consideration.
  • FIG. 1 shows the corradial-vane compressor consisting of one casing 1, two end cover 3, 6, and a rotor 2.
  • Rear end cover 6 is to hold the casing 1 sealed at its rear end and the hub of cover is as housing for end bearing 15.
  • Front cover 3 is a multifunctional solid state body for embracing end bearing 15, keeping sealed the casing at its front end ,having intake openings 17 and discharge holes 14, and providing suitable surfaces for carrying out the suction and compression prcesses.
  • Inward side of front cover 3 consists of a broad circular body 4 with continuous spatial sinusoidal surface , which is flat along radii and represents a continuous sinusoidal curve along the circumference composed of two convexes and two concaves.
  • This circular body, called wavy component 4 with its smooth surfaces seats into a circular channel provided in front of rotor 2.
  • Rotor body 2 has a cylenderical shape and rests in casing 1 free to rotate about its axis by means of an axial fixed-shaft 5 in its longitudinal axis and two bearings 15.
  • Front end of rotor comprises a circular channel with rectangular cross section and smooth interior surfaces in which seats the wavy component 4 of the front cover 3.
  • This circular channel is divided into number of equal parts, with respect to arclengh , by means of the same number of slotted deep-holes provided radially across the width of the channel.
  • a vane 8 with mechanically reciprocal motions parallel to the longitudinal axis of rotor and in accordance with its pathway which is the sinusoidal surface of the wavy component 4.
  • Each vane 8 with optimum roundness by its tip is in steady contact with the sinusoidal surface and by rear end fixed into a vane-assembly 9, which is a mediate device with same reciprocal motions and placed into a cylenderical cell behind the slotted hole.
  • Each of these cells with cylenderical-bore is exposed to a slotted hole and has a longitudinal axis parallel to axial shaft 5 of rotor 2. Interior surface of the cell is employed also as guide surface for vane-assembly 9, which is connected to a planetary helical gear 11 by means of a slider crank or scotch yoke mechanism.
  • Each planetary gear 11 geared in casing gear 13 is fixed on a shaft 12 having a crank component 10 and installed in rear part of rotor body, in such a manner , that the longitudinal axis of each crankshaft 12 represents a secant line on cross section area of rotor and intercepts perpendicularly the longitudinal axis of its appropriate cell, and that the plane of each planetary gears is radially perpendicular to the cross section area of rotor.
  • crank shafts 12 By revolution of rotor 2 the planetary helical gears 11 along with them the crank shafts 12 will revolve about their fixed axes and produce the required reciprocal motions to vane-assemblies 9 and therefore to vanes 8, by means of individual slider crank or scotch yoke mechanisms, which connect the cranks 10 to vane-assemblies 9.
  • the fifth chamber E is condensing the trapped gases between its vanes, where the latter vane of this chamber E is the former one of the fourth chamber D, and its former vane is the latter one of the first chamber A.
  • Harmony between reciprocal motions of the vanes and the surface of the wavy component is attained when the revolution number of each planetary gear during one revolution of rotor is equal to the number of existing convexes (concaves); in other words , the ratio of pitchdiameter and helix angle of a planetary helical gear 11 relative to those of casing gear 13 is such that for one revolution of rotor, there is equal number of convex (concave) surfaces revolutions for each of the planetary gears. 4
  • Output of a rotary corradial-vane compressor is a multiplication product of the maximum volume of a chamber, number of chambers or vanes, number of convex (concave) surfaces, and revolution per unit time.
  • the effect of gas forces arising in a chamber on rotor is a multiplication product of existing pressure in that chamber, differential of internally emerged surfaces of appropriate vanes, and a constant mean radius , which is a radial distance from center of rotation to midcircle of channel or the wavy component.
  • Li converting the compressor into a compressed air motor, it required only to remove the existing non-return valves 16 from the circuit and connect the outlet 14 ' - ? to compressed air reservoir.
  • the unit functions as compressed air motor with high efficiency but in reverse direction of rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

Compresseur composé d'un carter (1), d'un couvercle arrière (6), d'un couvercle avant (3) et d'un rotor (2). Le couvercle avant (3) se présente sous forme d'un large élément circulaire, appelé élément ondulé (4), comprenant une surface sinusoïdale spatiale continue représentant une de ses faces axiales. L'élément ondulé (4) se loge dans un canal circulaire, prévu à l'extrémité avant du rotor (2) et à l'opposé d'une face axiale plate du rotor(2). Le rotor (2), et son corps cylindrique, se loge dans le carter (1), et il peut tourner librement autour de son axe au moyen d'un arbre axial (5), fixé sur son axe longitudinal, et de deux supports (15). Le canal circulaire est divisé, en fonction de la longueur de l'arc, en une pluralité de chambres, au moyen du même nombre d'ailettes (8), coulissant dans des trous à fentes radiales prévus dans la face axiale plate du rotor. Dans chaque trou à fente, une ailette (8) vient coulisser avec des mouvements mécaniques réciproques parallèles à l'arbre (5). C'est par leurs extrémités que ces ailettes (8) sont constamment en contact avec la surface sinusoïdale de l'élément ondulé (4), et elles sont reliées aux ensembles d'ailettes (9) par leurs extrémités arrière; les ensembles d'ailettes étant placés dans des logements cylindriques et servant de dispositifs intermédiaires pour maintenir les ailettes dans la bonne position contre la surface sinusoïdale. A chaque ailette (8) et par conséquent à chaque ensemble d'ailettes (9), est associé un engrenage hélicoïdal planétaire (11) fixé sur un petit arbre (12) comprenant un élément de coude (10), par lequel chaque engrenage planétaire (11) est en prise avec une couronne fixe de train planétaire (13) dotée de dents hélicoïdales internes, fixées dans le carter (1). Lorsque le rotor (2) tourne dans le carter (1), les engrenages planétaires (11) ainsi que les coudes (10) tournent autour de leurs axes fixes et produisent le déplacement réciproque des ailettes (8) au moyen de mécanismes de coudes coulissants ou de commandes à coulisse, qui relient de manière individuelle les coudes (10) aux ensembles d'ailettes (9).
PCT/EP1990/000574 1990-04-11 1990-04-11 Compresseur co-radial rotatif a ailettes WO1991015679A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP1990/000574 WO1991015679A1 (fr) 1990-04-11 1990-04-11 Compresseur co-radial rotatif a ailettes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1990/000574 WO1991015679A1 (fr) 1990-04-11 1990-04-11 Compresseur co-radial rotatif a ailettes

Publications (1)

Publication Number Publication Date
WO1991015679A1 true WO1991015679A1 (fr) 1991-10-17

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB484707A (en) * 1936-10-09 1938-05-09 Standard Pressed Steel Co Improvements in or relating to rotary compressors, pumps, blowers and the like
FR2283318A1 (fr) * 1974-09-02 1976-03-26 Gaiffe Etienne Perfectionnements aux moteurs a combustion interne
US4004556A (en) * 1969-09-08 1977-01-25 Rolf Alfons Pfeiffer Rotary internal combustion engine of axially sliding vane type
FR2498695A1 (fr) * 1981-01-26 1982-07-30 Stephanois Rech Mec Perfectionnements aux cloisons escamotables pour une machine rotative a fluide sous pression telle qu'une pompe, un moteur ou un compresseur
JPS60230501A (ja) * 1984-04-27 1985-11-16 Sakurai Seisakusho:Kk ロ−タリ−式高圧ガス回転装置
EP0164317A1 (fr) * 1984-05-09 1985-12-11 Sergio Zaccaron Moteur alternatif à cylindres rotatifs
EP0274400A2 (fr) * 1987-01-08 1988-07-13 Wimmer-Heusch, Friederike Moteur à pistons rotatifs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB484707A (en) * 1936-10-09 1938-05-09 Standard Pressed Steel Co Improvements in or relating to rotary compressors, pumps, blowers and the like
US4004556A (en) * 1969-09-08 1977-01-25 Rolf Alfons Pfeiffer Rotary internal combustion engine of axially sliding vane type
FR2283318A1 (fr) * 1974-09-02 1976-03-26 Gaiffe Etienne Perfectionnements aux moteurs a combustion interne
FR2498695A1 (fr) * 1981-01-26 1982-07-30 Stephanois Rech Mec Perfectionnements aux cloisons escamotables pour une machine rotative a fluide sous pression telle qu'une pompe, un moteur ou un compresseur
JPS60230501A (ja) * 1984-04-27 1985-11-16 Sakurai Seisakusho:Kk ロ−タリ−式高圧ガス回転装置
EP0164317A1 (fr) * 1984-05-09 1985-12-11 Sergio Zaccaron Moteur alternatif à cylindres rotatifs
EP0274400A2 (fr) * 1987-01-08 1988-07-13 Wimmer-Heusch, Friederike Moteur à pistons rotatifs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 92 (M-468)(2149) 09 April 1986, & JP-A-60 230501 (SAKURAI SEISAKUSHO K.K.) 16 November 1985, see the whole document *

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