FR2806750A1 - ROTARY MOVING AND RECEIVING MACHINE - Google Patents

Abstract

The present invention relates to a driving and receiving machine of the rotary motion type operating as a combustion engine, compressed air or as a suction-thrust pump, a compressor, a vacuum cleaner. The machine of the invention comprises a first rotor (7 ) internal mounted in a second external rotor (4) eccentrically so as to constantly have a point of tangency (9 between the two rotors (4, 7), the respective axes of rotation (4a, 7a) of said rotors (4, 7) being fixed, a vane (10) mounted articulated by its two ends respectively on the surface of said internal rotor (7) and on the internal surface of said external rotor to thus define between said two rotors (4, 7) and with the point of tangency (9) above, two substantially sealed chambers of variable volume, one of the chambers being placed in fluid connection with a supply of a fluid, the other chamber being placed in fluid connection with an outlet of said fluid , said vane (10) being es camotable in the wall of one of said rotors. The internal flanges (7b) applied to the body of the rotor (4) define with the outer flanges (6) a cooling circuit.

Description

The present invention relates and essentially relates to a machine

  motor and / or receiver with rotary movement, such as a rotary steam engine, a compressed air, internal combustion engine, a hydraulic machine, or a suction-pressure pump, a vacuum pump, a compressor, a vacuum cleaner, or the like. More particularly, the invention can operate as a motive machine with a pressurized fluid or

  receiving machine which sets in motion a fluid.

  Piston engines including a crank-rod system which transforms the reciprocating rectilinear movement of the piston in the

  cylinder in a circular motion of the motor shaft.

  These different movement transformers, motors and distributors, absorb energy during operation, and the initial energy generated when the gas expands in the cylinder gives rise to a

  hammering that generates vibrations.

  Rotary motors are also known comprising a cylinder or stator in which is disposed a rotor having several points of contact made in particular with sliding vanes, with the internal surface of the

  stator to define variable volume chambers.

  Thus by compressing and expanding a fluid such as a gas in the different chambers, the rotor can be rotated relative to the stator. However, these devices have many drawbacks, in particular for achieving sealing at the contact between the rotor blades and the internal surface of the stator. In this contact zone, there are large friction forces which significantly reduce the energy efficiency of the machine, in particular its power. On the other hand, these frictions cause significant heating which requires a complex lubrication-cooling system, or else cause the

  dilation and seizure of the mechanisms.

  The present invention makes it possible, in the field concerned, to considerably limit these constraints and these disadvantages by proposing a motor and / or receiving machine with rotary movement in which the friction of the parts which compose it is reduced to a minimum and o sealing problems. are solved in a simple way, one of the important characteristics of the mechanism being that all the parts turn simultaneously according to the same movement and at the same speed. Therefore, the design of the present invention covers a wide range of industrial applications o - 2 - depending on the operating mode, engine or receiver, one can consider its use as a combustion engine, compressed air machine, machine steam, meter, hydraulic machine and the like, or alternatively, driven by, for example, an electric motor, as a suction and pressure pump, hydraulic pump,

  vacuum, compressor, vacuum cleaner and the like.

  Furthermore, it is appropriate for each of the envisaged applications to use the materials most suited to the optimum functioning of the application in question, in order to take account of the sealing requirements,

  resistance, or dilation, as minimal as they are.

  To this end, the subject of the present invention is a motor and receiving machine of the rotary movement type operating, for example, with a pressurized fluid such as a motor or a counter or the like or for putting

  circulating a fluid like a suction pump-

  pressure, a compressor, a vacuum cleaner, or the like characterized in that it comprises a first internal rotor mounted in a second external rotor eccentrically so as to have constantly a point of tangency between the two rotors, the respective axes of rotation of said rotors being fixed, a blade mounted articulated by these two ends respectively on the surface of said internal rotor and on the internal surface of said external rotor so as to define between said two rotors and with the aforementioned point of tangency, two substantially sealed chambers of variable volume, one of the chambers being connected with fluid with a supply of a fluid, the other chamber being connected with fluid with an outlet from said fluid, said blade being retractable in the wall of one of said rotors. Advantageously, this retraction of the aforementioned blade is carried out in a recess formed on the surface of the aforementioned internal rotor. This retraction device can be adapted, in another version, on the internal surface of the

external rotor.

  According to yet another characteristic of the invention, each of the internal and external rotors comprises

  internal and external lateral flanges respectively.

  The contact points of the two rotors, in addition to the aforementioned point of tangency, are limited to a partial projection of the

  internal lateral flanges on the body of the external rotor.

  Sealing at this point of contact is ensured by seals embedded in the internal face of the

  side flanges of the internal rotor.

  The external lateral flanges are fixed on the edges of the external rotor which form protrusions, advantageously avoiding contact between said internal flanges - 3 -

and external.

  These so-called projections are also characterized by the fact that they are regularly pierced with ventilation openings which communicate with the space formed between the two pairs of internal and external flanges, and which with the movement of the rotors cause a call for air which crosses this space and is evacuated along the axes of the rotors. To this end, and in order to optimize the cooling of the friction parts, the external surfaces of the flanges of the internal rotor have a relief in the form of fins. Furthermore, the aforementioned external rotor comprises two external lateral flanges supported by a first pair of bearings, for example rolling bearings, the internal rotor comprising a central shaft extending longitudinally through said lateral flanges of the external rotor and being supported in rotation on a second part of

bearings, for example rolling bearings.

  According to yet another characteristic of the invention, the abovementioned fluid connections between the two chambers respectively and a fluid outlet or inlet consist of channels made in said internal rotor and communicating respectively with said fluid outlet and said inlet fluid and opening onto the surface of said internal rotor on the one hand and

  else and near the aforementioned dawn.

  Advantageously, one of said channels forming a fluid connection opens out at the abovementioned recess forming a housing for the blade in the retracted position. Advantageously, the other of said channels forming the other fluid connection opens onto the surface of the blade directed towards the outside of the internal rotor in position.

retracted from it.

  According to yet another characteristic of the invention, the aforementioned fluid inlet and outlet consist of channels formed in the longitudinal shaft of the aforementioned internal rotor. Advantageously, the fluid inlet is produced in a first half of said shaft while the fluid outlet is produced

in the other half of the tree.

  Furthermore, the internal and external rotors are cylindrical and the internal rotor is advantageously

full.

  Other features, advantages and details of the invention will appear more clearly in the

  detailed description which follows, made with reference to

  annexed drawings given solely by way of example, and in which: FIG. 1 is a view in longitudinal section along the line of section II in FIG. 2 illustrating a preferred embodiment of the machine of the invention; FIG 2 is a top view of the machine shown in Figure 1 according to arrow II; FIG 3 is a cross-sectional view along line III-III of Figure 1 illustrating all the rotors of the machine according to the invention, in its neutral position; - Figure 4 is a cross-sectional view along line IVIV of Figure 1 illustrating all of the rotors in a position identical to that of Figure 3; FIG. 5 is a cross section identical to that of FIG. 3 in which all of the rotors of the machine have rotated by approximately 180 °; and FIG. 6 is a cross-sectional view identical to that of FIG. 4 in which the assembly

  rotors rotated about 180 degrees.

  FIG. 7 is a view in longitudinal section of the right half of FIG. 1 with, facing and in the same extension, a view of all of the rotors of the machine in cross section along lines III-III, IV-IV and VV

superimposed, in neutral.

  Referring to the figures and more particularly to Figures 1 and 2, the machine of the invention advantageously comprises a base 1 on which are fixed two pairs of rolling bearings 2, 3 respectively. The first pair of bearings 2 supports an external rotor 4 advantageously by a hollow shaft 5 extending the flanges 6 of the rotor 4. The second pair of bearings 3 supports the shaft 8 of an internal rotor 7 disposed at

  inside the external rotor 4 and eccentrically.

  The flanges 7b of the internal rotor 7 are inserted between the body of the external rotor 4 and its external flanges 6. The only point of contact of the flanges 7b is applied to the body of the external rotor 4. The sealing at this contact surface is ensured by a seal. The shaft 8 of the internal rotor 7 extends through the hollow shaft 5 of the

  external rotor 4 and beyond it.

  As is clear from the figures, the respective axes of rotation 4a, 7a of the external 4 and internal rotors

  7 are fixed relative to each other.

  The external rotor 4 is hollow, while the rotor 7 -5 is advantageously a full rotor. However, it is possible, without departing from the scope of the invention

to use a hollow rotor 7.

  As is more visible from FIGS. 3 to 6, the two rotors 4, 7 have a point of tangency 9. This point of tangency is fixed since the axes 4a, 7a of the two rotors 4, 7 do not move one compared

to the other.

  According to the invention, the two rotors 4 and 7 are connected to each other by means of a movable and mounted vane 10 articulated for example around an axis 10a fixed on the inner face of the external rotor 4 and fitting into the moving blade 10, and a groove 10b formed on the surface

external rotor 7.

  To allow the rotation of the two rotors and the passage of the movable blade at the point of tangency 9, a recess 11 is formed on the external surface of the internal rotor 7 forming a housing for the movable blade 10 when the latter is in the folded position as illustrated in Figures 3, 4. However, it is possible to achieve this

  housing in the wall of the external rotor 4.

  Of course, the embodiment of the movable blade

  represented is given simply by way of example.

  Thus, the blade 10 defines, between the two rotors 4 and 7, and with the point of tangency 9 two substantially sealed chambers 12, 13. These chambers have variable volumes depending on the position of the blade 10 relative to the

point of tangency 9.

  The machine of the invention also comprises a system for feeding and exhausting or leaving a fluid. In the preferred embodiment of the invention, the inlet 14 and outlet 15 channels of the fluid are produced respectively in one half of the shaft 8 of the rotor 7 as illustrated in fig 1. Channels 16 and 17 are formed in the internal rotor 7 to bring in and out

  the fluid respectively of the aforementioned chambers 12, 13.

  In the preferred embodiment, the channel 16 opens onto the surface of the internal rotor 7 near the movable blade 10 and upstream thereof relative to the direction of rotation of the rotors indicated by the arrow F, advantageously at the surface of the housing 11 of the movable blade 10. The channel 17 opens meanwhile downstream of the movable blade relative to the direction of rotation F of the rotors. Advantageously, and as illustrated in FIGS. 4 and 6, this channel opens onto the downstream face of the blade 10 with respect to the direction of rotation F. We will now describe the operation of the machine of the invention when it is used as machine

  drive ie as a rotary motor.

  To operate the machine of the invention as a rotary motor and to rotate it in the direction F indicated in FIGS. 5 and 6, a pressurized fluid is supplied, for example compressed air or combustion gases from a combustion chamber through channel 14 and through channel 16 into chamber 12 (Figure 5). This fluid exerts a thrust on the moving blade 10 which drives the two rotors 4, 7 in rotation according to arrow F, the gas contained in the chamber 13 being evacuated at

  through channel 17 and outlet pipe 15.

  Of course, to reverse the direction of rotation of the machine of the invention, it suffices to introduce the fluid

  under pressure through line 15 through channel 17.

  The rotary movement thus generated by the drive machine of the invention can be transmitted to any other machine by known transmission means, for example by connecting the shaft 8 of the internal rotor 7 to the machine to be driven. The machine of the invention can also be a

  receiving machine such as a suction pump -

  pressure, compressor or others. To do this, it suffices to drive with a motor, for example an electric motor, internal combustion or the like, one of the rotors 4, 7. In the case of a rotation according to the arrow F of FIGS. 5 to 6, in passing from neutral 9, the movable blade driven by the rotors 4, 7 causes a vacuum in the chamber 12 which gradually increases in volume and therefore there will be a suction of a fluid through the channels 16 and 14. On the side of the 'movable blade acting in the direction of rotation, the chamber 13 decreases in volume and there is therefore a discharge or compression of the fluid, this fluid being evacuated and discharged through the channels 17

and 15.

  Thus, the invention provides a machine operating in a rotary movement in which the losses of power and energy efficiency by friction between the rotor and the stator are considerably eliminated since these two elements rotate together with respect to the frame but do not rotate l 'one over the other. Therefore, the sealing problems at the contact surfaces between these two rotors are

also very simplified.

  This machine is very easy to use. Indeed, it can be used with any type of fluid such as liquid or gas, the desired direction of rotation is obtained by simple choice on the supply side of the

fluid.

-7-

Claims (4)

  1 Motor and / or receiving machine of the rotary movement type operating, for example, with a pressurized fluid such as an internal combustion, steam, compressed air engine, a gas machine, a hydraulic machine, a counter or the like or for circulating a fluid such as a suction-treading pump, a hydraulic pump, a vacuum pump, a compressor, a vacuum cleaner or the like, comprising a first internal rotor (7) mounted in a second eccentric external rotor (4) so as to have constantly a point of tangency (9) between the two rotors (4, 7), the axes of rotation (4a, 7a) respective of said rotors (4, 7) being fixed, a blade (10) mounted articulated by its two ends respectively on the surface of said internal rotor (7) and on the internal surface of said external rotor (4) so to define between said two rotors (4, 7) and with the aforementioned point of tangency, two chambers (12, 13 ) appreciably tight and volum variable, one of the chambers being connected with fluid with a supply (14, 16) of a fluid, the other chamber being connected with fluid with an outlet (15, 17) of said fluid, said blade (10) being retractable in the wall of the internal rotor, characterized in that the above-mentioned external rotor (4) comprises two lateral flanges (6) connected to the rotor body (4) by a projection 6a and supported by a first pair of bearings (2) for example with a bearing, the internal rotor (7) comprising on the one hand two lateral flanges (7b) inserted between the body of the external rotor (4) and its external flanges (6) and having the sole surface of contact the body of the external rotor (4), and further comprising a central shaft (8) extending longitudinally through said side plates (6) of the above-mentioned external rotor (4) and being supported in rotation on a second pair of bearings (3) for example rolling.   2 Machine according to claim 1 characterized in that the projections (6a) connecting the external flanges (6) to the body of the external rotor (4) are pierced with ventilation openings connecting the space formed between the flanges (6) of the rotor external (4) and the flanges (7b) of the rotor internal (7).   3 Machine according to claims 1 and 2,   characterized in that the flanges (7b) of the internal rotor (7) have their external surfaces directed towards the space formed with the flanges (6) of the external rotor (4), - 8-   formed by cooling fins.   4 Machine according to claim 3, characterized in that said flanges (7b) of the internal rotor (7) and the body of the external rotor (4) are crimped with a seal.   sealing at their contact points.