1. The utility model provides a chambered rotor volume mechanism which characterized in that: comprises a cylinder body (5), a main rotor (1), a cavity-dividing rotor (4), a rotor end cover (3), a cylinder body end cover (2) and a gear train;

the two ends of the main rotor (1) are provided with main rotating shafts, rotor end covers are fixedly sleeved on the main rotating shafts, cylinder bodies are arranged on the outer sides of the rotor end covers in a covering mode, through holes are formed in the cylinder end covers (2) and used for the main rotating shafts to penetrate through, the main rotor (1) can rotate relative to the cylinder bodies, the main rotor (1) and the rotor end covers are relatively fixed, a first arc groove is formed in the main rotor (1), the cavity dividing rotor is embedded in the first arc groove, the rotating shafts of the cavity dividing rotor are arranged in a pore channel of the rotor end covers in a penetrating mode so as to achieve the relative rotation of the cavity dividing rotor and the rotor end covers, a gear is fixedly arranged at one end of the cavity dividing rotor rotating shaft, an idle gear meshed with the gear is arranged on the end face of the rotor end cover, and a fixed gear meshed with the idle gear is fixedly arranged on the inner side of one end cover of the cylinder body; the cavity-dividing rotor is provided with a second curved surface groove, an inner bulge with a section of small arc surface is arranged on the cylinder body (5), and both sides of the small arc surface on the inner bulge are provided with an air inlet duct and an air outlet duct;

when the main rotor (1) rotates, the idler gear (9), the cavity dividing rotor (4) and the gear (8) on the rotor end cover (6) revolve around the fixed gear (10), meanwhile, the gear (9) is meshed with the fixed gear (10) and the gear (9) rotates, the gear (8) and the cavity dividing rotor (4) are driven to rotate, the cavity dividing rotor (4) and the main rotor (1) rotate in the opposite direction, when the cavity dividing rotor (4) rotates to the middle position of the large arc surface of the cylinder body (5), two edges of a groove of a second curved surface of the cavity dividing rotor (4) are in a first arc groove of the main rotor (1), two groove edges of the cavity dividing rotor (4) are in a conjugate relation with two side curved surfaces adjacent to a convex small arc surface in the cylinder body (5), and side lines of two sides of the convex small arc surface in the cylinder body (5) are in a conjugate relation with the outer section of the groove curved surface of the second curved surface of the cavity dividing rotor (4).

2. The chambered rotor volume mechanism of claim 1, wherein: the outer circular surface of the rotor end cover, the inner circular surface of the cylinder body end cover and the center of the cylinder body arc are coaxial with the main rotor; a movement gap is reserved between the outer circular surface of the rotor end cover and the inner circular surface of the cylinder body end cover; a movement gap is reserved between the inner end face of the rotor end cover and the end face of the convex part in the cylinder body; the through hole of the cylinder body end cover is coaxial with the circular arc surface of the cylinder body, the main shaft of the main rotor penetrates through the through hole, and the main rotor bearing is located on the cylinder body end cover to play a supporting role.

3. The chambered rotor volume mechanism of claim 1, wherein: the inner wall of the cylinder body is provided with N groups of units with the length of H, each group of units consists of a large arc surface with the radius being slightly larger than L + R, a small arc surface with the radius being R and the arc length being S and coaxial with the large arc surface, and two symmetrical curved surfaces which are tangent to the large arc surface and connected with the small arc surface, wherein the symmetrical surfaces consist of a small arc surface shaft and a small arc center line, and when N is larger than 1, the N groups of units are uniformly distributed according to the arc surface center shaft, so that N inner bulges are formed inside the cylinder body, and gas ports are arranged on two sides of the small arc surface of each inner bulge and used as a gas inlet channel and a gas outlet channel;

the main rotor rotating shaft is arranged on the central shaft of the arc surface of the cylinder body, the radius of the inner part of the cylinder body is slightly smaller than that of an R cylinder, the length of the inner part of the cylinder body is slightly larger than that of H, N arc grooves with the radius slightly larger than that of R are arranged on the cylinder body, the distance between the central shaft of the arc grooves and the central shaft of the main rotor is L, and one end of the rotor penetrates through a rotor end cover and a cylinder end cover to serve as a power input/output shaft;

the rotating shaft of the cavity-dividing rotor is coaxial with the central shaft of the arc surface groove of the main rotor, the part of the cavity-dividing rotor in the cylinder body is a cylinder and comprises a groove consisting of two symmetrical curved surfaces and a middle curved surface connected with the two symmetrical curved surfaces, the radius of the arc surface is r, the length of the arc surface is H, and the mass center of the cavity-dividing rotor is positioned on the rotating shaft of the cavity-dividing rotor.

4. The chambered rotor volume mechanism of claim 3, wherein: the cavity dividing rotor is driven by a gear train to rotate reversely at N times of the rotation speed of the main rotor, two symmetrical curved surfaces of the cavity dividing rotor are in conjugate relation with two linear side lines of a small arc surface of a cylinder body from an arc surface to a middle contact line, the middle contact line is a coincident straight line of a rotor groove of the small arc surface on the same side when the symmetrical surface of the cavity dividing rotor is coincident with the symmetrical surface of the small arc surface, a gap is left between the two symmetrical curved surfaces of the cavity dividing rotor and the small arc surface of the cylinder body during the rotation process from the middle contact line to a connecting line part of the two symmetrical curved surfaces, the two linear side lines of the outer arc surface of the cavity dividing rotor are in conjugate relation with the two symmetrical curved surfaces on two sides of the small arc surface of the cylinder body, and the sizes L, R, R and S meet the requirement of forming the two conjugate relations;

the sizes L, R, R and S meet the condition that the arc groove of the main rotor always comprises one part of the cavity dividing rotor, namely when the cavity dividing rotor is positioned at the middle position of the large arc surface of the cylinder body, two arc sidelines of the cavity dividing rotor are positioned in the groove of the main rotor;

the gear train comprises a central gear fixed on the cylinder body end cover and coaxial with the cylinder body arc surface, N idle gears installed on the rotor end cover and N driving sub-cavity rotor gears, and the gear train central gear and the driving sub-cavity rotor gears are in a speed transformation ratio of-1: n;

the rotor end cover is fixed on the main rotor and rotates together with the main rotor, the radius of the rotor end cover is larger than or equal to the radius of a large arc surface of the cylinder body, N rotating shaft holes of the cavity-divided rotors are formed in the rotor end cover, the center of the rotor end cover is provided with a main rotor rotating shaft hole, and a shaft used for installing an idler gear is arranged on the rotor end cover on the gear train side.

5. A volume mechanism as claimed in claim 1, wherein: when N is 1, when the cavity dividing rotor rotates to the convex position of the cylinder body and the symmetrical surface of the cavity dividing rotor is superposed with the symmetrical surface of the cylinder body, the working area is divided into three areas by the cavity dividing rotor, a closed cavity is formed outside the arc surface of the cavity dividing rotor, and two cavities formed by the inner side of the cavity dividing rotor and the two curved surfaces of the cylinder body are respectively communicated with the air inlet and outlet; along with the rotation of the rotor, the cavity communicated with the air inlet becomes larger, the cavity communicated with the air outlet becomes smaller, the cavity disappears when the cavity dividing rotor passes through the small arc surface edge of the cylinder body, at the moment, the cavity dividing rotor divides the working area into two cavities, the main rotor continues to rotate, one side of the cavity at two sides of the cavity dividing rotor becomes larger and the other side becomes smaller, when the cavity dividing rotor rotates to the convex position again and the sealing line of the cavity dividing rotor is just sealed, three cavities are formed, then the cavity dividing rotor rotates to the convex position of the cylinder body and the symmetrical plane of the cavity dividing rotor coincides with the symmetrical plane of the cylinder body again, if the cavity dividing rotor is used as a compressor to complete one-time air inlet and compression circulation, and the air outlet is provided with a one-way valve to prevent high-pressure gas from returning to the compression cavity; if the expansion machine is used as an expansion machine, completing one expansion and exhaust cycle;

n is more than 1, when the cavity dividing rotor rotates to the convex position of the cylinder body and the symmetrical surface of the cavity dividing rotor is superposed with the symmetrical surface of the convex part of the cylinder body, each working area is divided into three areas by the cavity dividing rotor, a closed cavity is formed outside the arc surface of the cavity dividing rotor, and two cavities formed by the inner side of the sealed rotor and the two curved surfaces of the cylinder body are respectively communicated with the air inlet and outlet; along with the rotation of the rotor, the cavity communicated with the air inlet becomes larger, the cavity communicated with the air outlet becomes smaller, the cavity disappears when the cavity-dividing rotor passes through the edge of the small circular arc surface of the cylinder body, the cavity-dividing rotor divides the working area into two cavities at the moment of sealing, the main rotor continues to rotate, the cavity on one side on the two sides of the cavity-dividing rotor becomes larger and the cavity on the other side becomes smaller, when the cavity-dividing rotor rotates to the next convex position and the sealing line of the cavity-dividing rotor is just sealed, each working area forms three cavities, then the cavity-dividing rotor rotates to the convex position of the cylinder body and the symmetrical plane of the cavity-dividing rotor coincides with the symmetrical plane of the convex part of the cylinder body again, if the cavity-dividing rotor completes one-time compression cycle in each working area of the compressor, and the check valve is matched on the air outlet to prevent high-pressure gas from returning to the compression cavity; if the expander is used as an expander, each working area completes one exhaust and expansion cycle.

6. The volume mechanism as claimed in claim 1, wherein the inlet and outlet channels are enlarged to align the two sides of the groove of the chambered rotor (4) with the inlet and outlet sides of the cylinder body (5) when the chambered rotor (4) is opposite to the protrusion of the cylinder body (5); such a displacement mechanism may be used as a liquid pump and motor.

Background art:

the prior positive displacement compressor comprises a reciprocating piston type mechanism and a rotary type mechanism, wherein a crank connecting rod is used for driving a piston to reciprocate in a cylinder sleeve and is matched with an air inlet and exhaust valve, an air inlet valve is opened to close an exhaust valve and suck air at a piston descending section, and an air inlet valve is closed to close the exhaust valve and open air at a piston ascending section to be compressed and discharged from the exhaust valve; the screw type is a closed space formed by the rotation of curved male and female rotors, sucks air at a low-pressure side, compresses the air, conveys the air to a high-pressure side and discharges the air, and the vortex type is a crescent space formed by the mutual engagement of a moving vortex disk and a static vortex disk of two bifunction equation lines, sucks air from the sides, compresses the air to the center of a vortex and discharges the air.

The invention relates to a rotor compressor in the prior art, and the patent number thereof is as follows: 201310125259.4, the invention comprises a cylinder, a main rotor and at least two sub-rotors, the groove of the sub-rotor is driven by the inner gear and is conjugate with the convex point of the cylinder, the two side lines of the groove of the sub-rotor are conjugate with the convex curved surface of the cylinder, the sealing between the outer arc surface of the main rotor and the cylinder is linear sealing, the air inlet and outlet are in the middle of the curved surface, when the sub-rotor rotates to the convex position of the cylinder, part of the volume of the sub-rotor can not be used for air inlet and outlet.

But the reciprocating piston compressor has a plurality of structural parts, a complex structure and reciprocating inertia force; the rotary compression screw rod type and the vortex type are meshed by curved surfaces, and the machining and assembling precision is high;

patent number of invention patent rotor compressor: 201310125259.4 the sealing between the arc surface of the main rotor and the cylinder is linear sealing, the sub-rotor is driven by an internal gear structure, so that the center distance between the sub-rotor and the main rotor is greater than the radius of the main rotor, the number of the sub-rotors is greater than or equal to 2, and the space formed by the sub-rotor and the cylinder can not be used when the sub-rotor groove is aligned with the cylinder bulge.

The invention content is as follows:

in view of the above, the present invention provides a sub-cavity rotor displacement mechanism, which has a simple structure, is easy to machine and assemble, has no reciprocating motion, runs stably, has no vibration, has low noise, and has high displacement efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention discloses a cavity-divided rotor volume mechanism, which is characterized in that: comprises a cylinder body, a main rotor, a cavity-divided rotor, a rotor end cover, a cylinder body end cover and a gear train;

the two ends of the main rotor are provided with main rotating shafts, rotor end covers are fixedly sleeved on the main rotating shafts, cylinder bodies are covered on the outer sides of the rotor end covers, through holes are formed in the cylinder end covers and used for the main rotating shafts to penetrate through, the main rotor can rotate relative to the cylinder bodies, the main rotor and the rotor end covers are relatively fixed, a first arc groove is formed in the main rotor, the cavity dividing rotor is embedded in the first arc groove, the rotating shafts of the cavity dividing rotor are arranged in a hole channel of the rotor end covers in a penetrating mode so that the cavity dividing rotor and the rotor end covers can rotate relative to each other, one end of the rotating shaft of the cavity dividing rotor is fixedly provided with a gear, an idle gear meshed with the gear is arranged on the end face of the rotor end cover, and a fixed gear meshed with the idle gear is fixedly arranged on one inner side of the cylinder end cover; the cavity-dividing rotor is provided with a second curved surface groove, the cylinder body is provided with an inner bulge, and the inner bulge is provided with an air inlet duct and an air outlet duct;

when the main rotor rotates, the idle gear, the cavity dividing rotor and the gear on the rotor end cover revolve around the fixed gear, meanwhile, the gear is meshed with the fixed gear and rotates, the gear and the cavity dividing rotor are driven to rotate, and the cavity dividing rotor and the main rotor rotate in the opposite direction.

Furthermore, the excircle surface of the rotor end cover, the inner circle surface of the cylinder end cover and the arc center of the cylinder are coaxial with the main rotor; a movement gap is reserved between the outer circular surface of the rotor end cover and the inner circular surface of the cylinder body end cover; a movement gap is reserved between the inner end face of the rotor end cover and the end face of the convex part in the cylinder body; the through hole of the cylinder body end cover is coaxial with the circular arc surface of the cylinder body, the main shaft of the main rotor penetrates through the through hole, and the main rotor bearing is located on the cylinder body end cover to play a supporting role.

Furthermore, the inner wall of the cylinder body is provided with N groups of units with the length of H, each group of units consists of a large arc surface with the radius slightly larger than L + R, a small arc surface with the radius R and the arc length of S, which is coaxial with the large arc surface, and two symmetrical curved surfaces which are tangent to the large arc surface and are connected with the small arc surface, each symmetrical surface consists of a small arc surface shaft and a small arc central line, and when N is larger than 1, the N groups of units are uniformly distributed according to the central shaft of the arc surface, so that N inner bulges are formed in the cylinder body, and each inner bulge is provided with air ports on two sides of the small arc surface as the air inlet duct and the air outlet duct;

the main rotor rotating shaft is arranged on the central shaft of the arc surface of the cylinder body, the radius of the inner part of the cylinder body is slightly smaller than that of an R cylinder, the length of the inner part of the cylinder body is slightly larger than that of H, N arc grooves with the radius slightly larger than that of R are arranged on the cylinder body, the distance between the central shaft of the arc grooves and the central shaft of the main rotor is L, and one end of the rotor penetrates through a rotor end cover and a cylinder end cover to serve as a power input/output shaft;

the rotating shaft of the cavity-dividing rotor is coaxial with the central shaft of the arc surface groove of the main rotor, the part of the cavity-dividing rotor in the cylinder body is a cylinder and comprises a groove consisting of two symmetrical curved surfaces and a middle curved surface connected with the two symmetrical curved surfaces, the radius of the arc surface is r, the length of the arc surface is H, and the mass center of the cavity-dividing rotor is positioned on the rotating shaft of the cavity-dividing rotor.

Furthermore, the cavity dividing rotor is driven by a gear train to rotate reversely at N times of the rotation speed of the main rotor, two symmetrical curved surfaces of the cavity dividing rotor are in conjugate relation with two linear side lines of a small arc surface of the cylinder body from an arc surface to a middle contact line, the middle contact line is a coincident straight line of the cavity dividing rotor groove of the linear side line of the small arc surface on the same side when the symmetrical surface of the cavity dividing rotor is coincident with the symmetrical surface of the small arc surface, a gap is left between the two symmetrical curved surfaces of the cavity dividing rotor and a connecting line part of the two symmetrical curved surfaces from the middle contact line in the rotating process and is not contacted with the small arc surface of the cylinder body, the two linear side lines of the outer arc surface of the cavity dividing rotor are in conjugate relation with the two symmetrical curved surfaces on two sides of the small arc surface of the cylinder body, and the sizes L, R;

the sizes L, R, R and S meet the condition that the arc groove of the main rotor always contains one part of the cavity-dividing rotor, namely when the cavity-dividing rotor is positioned at the middle position of the large arc surface of the cylinder body, two arc sidelines of the cavity-dividing rotor are in the groove of the main rotor.

The gear train comprises a central gear fixed on the cylinder body end cover and coaxial with the cylinder body arc surface, N idle gears installed on the rotor end cover and N driving sub-cavity rotor gears, and the gear train central gear and the driving sub-cavity rotor gears are in a speed transformation ratio of-1: and N is added.

The rotor end cover is fixed on the main rotor and rotates together with the main rotor, the radius of the rotor end cover is larger than or equal to the radius of a large arc surface of the cylinder body, N rotating shaft holes of the cavity-divided rotors are formed in the rotor end cover, the center of the rotor end cover is provided with a main rotor rotating shaft hole, and a shaft used for installing an idler gear is arranged on the rotor end cover on the gear train side.

Further, when the N is 1, when the cavity dividing rotor rotates to the convex position of the cylinder body and the symmetrical surface of the cavity dividing rotor is superposed with the symmetrical surface of the cylinder body, the working area is divided into three areas by the cavity dividing rotor, a closed cavity is formed outside the arc surface of the cavity dividing rotor, and two cavities formed by the inner side of the cavity dividing rotor and the two curved surfaces of the cylinder body are respectively communicated with the air inlet and outlet; along with the rotation of the rotor, the cavity communicated with the air inlet becomes larger, the cavity communicated with the air outlet becomes smaller, the cavity disappears when the cavity dividing rotor passes through the small arc surface edge of the cylinder body, at the moment, the cavity dividing rotor divides the working area into two cavities, the main rotor continues to rotate, one side of the cavity at two sides of the cavity dividing rotor becomes larger and the other side becomes smaller, when the cavity dividing rotor rotates to the convex position again and the sealing line of the cavity dividing rotor is just sealed, three cavities are formed, then the cavity dividing rotor rotates to the convex position of the cylinder body and the symmetrical plane of the cavity dividing rotor coincides with the symmetrical plane of the cylinder body again, if the cavity dividing rotor is used as a compressor to complete one-time air inlet and compression circulation, and the air outlet is provided with a one-way valve to prevent high-pressure gas from returning to the compression cavity; if the expansion machine is used as an expander to complete one expansion and exhaust cycle.

N is more than 1, when the cavity dividing rotor rotates to the convex position of the cylinder body and the symmetrical surface of the cavity dividing rotor is superposed with the symmetrical surface of the convex part of the cylinder body, each working area is divided into three areas by the cavity dividing rotor, a closed cavity is formed outside the arc surface of the cavity dividing rotor, and two cavities formed by the inner side of the sealed rotor and the two curved surfaces of the cylinder body are respectively communicated with the air inlet and outlet; along with the rotation of the rotor, the cavity communicated with the air inlet becomes larger, the cavity communicated with the air outlet becomes smaller, the cavity disappears when the cavity-dividing rotor passes through the edge of the small circular arc surface of the cylinder body, the cavity-dividing rotor divides the working area into two cavities at the moment of sealing, the main rotor continues to rotate, the cavity on one side on the two sides of the cavity-dividing rotor becomes larger and the cavity on the other side becomes smaller, when the cavity-dividing rotor rotates to the next convex position and the sealing line of the cavity-dividing rotor is just sealed, each working area forms three cavities, then the cavity-dividing rotor rotates to the convex position of the cylinder body and the symmetrical plane of the cavity-dividing rotor coincides with the symmetrical plane of the convex part of the cylinder body again, if the cavity-dividing rotor completes one-time compression cycle in each working area of the compressor, and the check valve is matched on the air outlet to prevent high-pressure gas from returning to the compression cavity; if the expander is used as an expander, each working area completes one exhaust and expansion cycle.

The sealing between the arc surface of the main rotor and the cylinder body is surface sealing, the center distance between the sub rotor and the main rotor is not limited by the inner gear, the concave arc groove of the cavity dividing rotor is aligned with the bulge of the cylinder body, and the space formed by the cavity dividing rotor and the cylinder body can be effectively utilized, so the structure of the invention is simple, the quality of the rotor is balanced and the operation is stable, the main rotor and the cavity dividing rotor are compared with a screw type and a vortex type in the process of drawing a curved surface, and the processing is easy.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to specific embodiments and accompanying drawings.

Description of the drawings:

fig. 1 is an axial sectional view of a N =1 chambered rotor rotary volume mechanism.

Fig. 2 is a radial sectional view of the N =1 chambered rotor rotary volume mechanism.

Fig. 3 is an operation schematic diagram of the N =1 chambered rotor rotary volume mechanism.

Fig. 4 is a schematic view of an N =2 chambered rotor rotational volume mechanism.

Fig. 5 is a schematic view of a N =3 chambered rotor rotational volume mechanism.

FIG. 6 is an exploded view from a perspective of one embodiment;

FIG. 7 is an exploded view from another perspective of an embodiment;

FIG. 8 is an exploded view from another perspective of another embodiment;

fig. 9 is an exploded view from another perspective of another embodiment.

The specific implementation mode is as follows:

mode 1:

fig. 1 shows a single-chamber rotor volume mechanism. The volume mechanism is composed of a main rotor 1, a cavity-separating rotor 4, a cylinder body 5, rotor end covers 3 and 6, cylinder body end covers 2 and 7, a gear 8, an idle gear 9, a fixed gear 10 and a bearing 11.

The inner wall of the cylinder body 5 is formed by connecting a large arc surface with the radius slightly larger than L + R, a curve L2 stretching curved surface, a small arc surface with the radius R and the arc length S and a curve L2' stretching curved surface symmetrical to the curve L2, wherein the stretching curved surface is tangent to the large arc surface, points of the tangent line on the section plane are D3 and D4, the curved surfaces at two sides of the small arc surface are respectively provided with an air port, one side of each air port is close to the small arc surface, and points of two straight edges of the small arc surface on the section plane are D1 and D2.

The outer surface of the cavity-dividing rotor 4 comprises a circular arc surface with the radius r and two symmetrical curve l1 and l 1' stretching surfaces, and the mass center of the cavity-dividing rotor 4 is on the rotating shaft thereof.

The rotor end covers 3 and 6 are connected with the main rotor 1 through fasteners, and the outer circular surfaces of the rotor end covers 3 and 6, the inner circular surfaces of the cylinder body end covers 2 and 7, the arc center of the cylinder body 5 and the main rotor 1 are coaxial; a movement gap is reserved between the outer circular surfaces of the rotor end covers 3 and 6 and the inner circular surfaces of the cylinder end covers 2 and 7; a movement gap is reserved between the inner end surfaces of the rotor end covers 3 and 6 and the end surface of the protruding part in the cylinder body 5.

The cylinder body end covers 2 and 7 are fixed on the cylinder body, a through hole is formed in the cylinder body end cover and is coaxial with the arc surface of the cylinder body, the shaft of the main rotor penetrates through the through hole, and the main rotor bearing is located on the cylinder body end cover to play a supporting role.

The radius of the main rotor 1 is R, the main rotor 1 is provided with an arc groove (a first arc groove) the radius of which is slightly larger than R, and the distance between the axis of the arc groove and the axis of the main rotor 1 is L.

The speed ratio of the gear 8 to the gear 10 is-1: 1, the fixed gear 10 is fixed on the cylinder end cover 7, the shaft of the fixed gear 10 is coaxial with the main rotor 1, the idle gear 9 is arranged on the rotor end cover 6, and the gear 8 is fixedly arranged on the driving shaft of the cavity dividing rotor.

The section curve l1 'of the cavity-dividing rotor 4 is composed of two sections with the D2' point as the boundary, one section from the D2 'point to the outer arc surface of the cavity-dividing rotor 4 is called the l 1' outer section, and one section from the D2 'point to the symmetrical surface of the cavity-dividing rotor 4 is called the l 1' inner section.

As shown in fig. 3, when the coincidence position D2 between the lower edge line of the groove of the main rotor 1 and the lower edge line of the small arc surface of the cylinder 5 starts, the main rotor 1 rotates clockwise, and the cavity dividing rotor 4 rotates counterclockwise at the same rotational speed, and rotates to the coincidence position between the central plane of the groove of the main rotor 1 and the central plane of the small arc surface of the cylinder 5, the process obtains the track left by the point D2 on the cylinder 5 on the circular section of the cavity dividing rotor 4, and the track is offset to the direction of the outer arc surface of the cavity dividing rotor 4 by a point movement gap, namely the outer section of the curve l 1'.

When the central plane of the groove of the main rotor 1 coincides with the central plane of the small arc surface of the cylinder body 5, the symmetrical plane of the cavity-dividing rotor also coincides with the central plane of the small arc surface of the cylinder body 5, and the symmetrical central plane of the cavity-dividing rotor can be determined, and is a central line shown in fig. 2 and 3.

When the main rotor 1 and the cavity dividing rotor 4 rotate to the position where the central plane of the groove of the main rotor 1 coincides with the convex symmetrical central plane of the cylinder body, and the main rotor 1 and the cavity dividing rotor 4 continue to rotate to the position where the central plane of the cavity dividing rotor coincides with the lower side of the convex small arc surface of the cylinder body 5, the process obtains the tracks of the point D4 shown in figure 3 and the points on the lower half section of the small arc section of the cylinder body 5 on the circular section of the cavity dividing rotor 4, and the tracks are curves formed by connecting points close to the central point of the outer arc of the cavity dividing rotor 4 and offset one point of a movement gap, namely the inner section of l 1'.

The sectional curve l1 of the chambered rotor 4 is obtained as a mirror image from l 1' with the centre plane of symmetry of the chambered rotor 4.

The convex section curve l 2' of the cylinder 5 is as follows;

as shown in fig. 3, when the coinciding position D2 of the lower edge line of the groove of the main rotor 1 and the lower edge line of the small arc surface of the cylinder 5 starts, the main rotor 1 rotates clockwise, and the cavity dividing rotor 4 rotates counterclockwise at the same speed, and rotates to the positions of three points and one line at the arc center of the cylinder 5, the arc center of the cavity dividing rotor 4, and the intersection point D4 'of the outer arc of the cavity dividing rotor 4 and the curve l 1', the process obtains the trajectory of D4 'on the cross section of the cylinder 5, and the trajectory deviates a point from the center direction of the cylinder by a movement gap, which is the convex cross section curve l 2' of the cylinder 5.

The section curve l2 of the cylinder 5 is symmetrical to the curve l 2', and the symmetrical plane is the symmetrical central plane of the small arc surface of the cylinder 5.

When the cavity dividing rotor 4 rotates to the middle of the large arc surface of the cylinder body in fig. 3, two side lines of a cavity dividing rotor groove (a second curved surface groove) are arranged at the inner end of the groove of the main rotor 3.

The combined center of mass of the main rotor 1, the sub-cavity rotor 4, the rotor end covers 3 and 6, the idle gear 9 and the gear 10 is located on the main rotor rotating shaft through the mass distribution of all parts.

When the main rotor 1 rotates, the idler gear 9, the cavity dividing rotor 4 and the gear 8 on the rotor end cover 6 revolve around the fixed gear 10, meanwhile, the gear 9 is meshed with the fixed gear 10 and the gear 9 to rotate, and drives the gear 8 and the cavity dividing rotor 4 to rotate, the speed ratio of the fixed gear 10 to the gear 8 is-1: 1, the cavity dividing rotor 4 and the main rotor 1 rotate reversely at a constant speed, the cavity dividing rotor 4 and the cylinder body move in a conjugate mode in the curved surface section of the cylinder body, and the excircle cambered surface of the cavity dividing rotor in the large-arc section of the cylinder body is tangent to the large-arc surface of the cylinder body.

As shown in fig. 2, which is a radial cross-sectional view of the single-chamber rotor displacement mechanism when the symmetry plane of the chamber rotor coincides with the symmetry plane of the cylinder body, at this position the chamber rotor divides the working space enclosed by the cylinder body, the main rotor and the rotor end cover into three parts, namely a1, a2 and A3, and a1 and a2 are respectively communicated with the exhaust port and the intake port.

When the single-cavity rotor volume mechanism is used as a compressor, a check valve is arranged on an exhaust port to prevent exhausted gas from flowing back, mechanical work drives the main rotor 1 to rotate clockwise, the cavity dividing rotor 4 rotates anticlockwise at a constant speed, gas with the larger volume of the cavity A2 enters from an air inlet, gas with the smaller volumes of the cavities A1 and A3 is compressed, when the upper edge line of a groove of the cavity dividing rotor reaches the exhaust port, the cavity A3 is communicated with the exhaust port, the gas of the cavity A3 is gradually compressed, when the pressure is higher than the external pressure of the exhaust port, the check valve is opened to discharge the compressed gas, when the cavity dividing rotor returns to the groove of the cavity dividing rotor and just passes through the air inlet, the cavity dividing rotor divides a working space into three parts of cavities A1, A2 and A3, then the symmetrical plane of the cavity dividing rotor of the single-cavity rotor volume mechanism coincides with the symmetrical plane of a cylinder body again, and the cavity dividing rotor rotation volume mechanism completes an air inlet compression working cycle, the mechanical work drives the main rotor to rotate continuously, so that the gas is sucked, compressed and discharged continuously.

The single-cavity rotor volume mechanism is used as high-pressure gas of an expander and enters an A2 cavity from a gas inlet, the high-pressure gas generates clockwise rotation torque on a cavity dividing rotor and a main rotor, the main rotor rotates clockwise, the cavity dividing rotor rotates anticlockwise, a cavity A2 expands the gas to do work, the expanded gas is discharged after the cavity A3 is communicated with a gas outlet, a working cycle is completed after the main rotor rotates for one circle, mechanical work is output, the high-pressure gas continuously enters the expansion from the gas inlet to do work and then is discharged from the gas outlet, and the mechanical work can be continuously output.

Mode 2:

fig. 4 shows a double-cavity rotor volume mechanism, which is composed of a main rotor 1 with a radius R, two cavity rotors 4 with a radius R, a cylinder 5, a gear 8, two idler gears 9, two fixed gears 10, rotor end covers covering the main rotor 1 and the two cavity rotors 4, and cylinder end covers covering both ends of the cylinder, wherein the center distance between the main rotor and the cavity rotors is L.

Compared with the mode 1, the main rotor is provided with two symmetrical grooves, the cylinder body is provided with two bulges, two cavity-dividing rotor rotating shaft holes which are uniformly distributed on the rotor end cover on one side correspond to the rotor end cover on the other side, and two idle gear shafts which are uniformly distributed on the circumference are arranged on the rotating shaft of the main rotor 1 except the rotating shaft holes of the two cavity-dividing rotors which are uniformly distributed on the circumference.

The speed ratio of the gear 8 and the fixed gear 10 of the double-cavity volume mechanism is-2: 1,

the inner wall of the cylinder body of the double-cavity-dividing volume mechanism is provided with two bulges which are uniformly distributed on the circumference and have the same mode 1, the two symmetrical curved surfaces of the bulges and the two symmetrical curved surfaces of the grooves of the cavity-dividing rotor can also obtain curved surfaces by simulating conjugate motion, a small section of small arc curved surface with the radius being greater than L + R is arranged between the two bulges, the two bulges are respectively provided with a small section of small arc curved surface with the radius being R, and when the cavity-dividing rotor is positioned at the middle position of the large arc surface of the cylinder body as shown in figure 4, the two sides of the grooves of the cavity-dividing rotor are positioned in the grooves of the main rotor.

Starting from the position of fig. 4, the main rotor 1 of the double-cavity rotor volume mechanism rotates clockwise, the double-cavity rotor rotates counterclockwise at twice the speed of the main rotor under the action of the gear trains 8, 9 and 10, and the two cavities a2 and a2²Increasing the inlet air from the respective inlet, chambers A1, A1²Become smaller and exhaust from the respective vents, chambers A3, A3²Is compressed and then the slot edge of the chambered rotor rotates past the vent pockets A3, A3²Is communicated with the exhaust port for exhausting. Two chambered rotor displacement mechanisms accomplish twice advance exhaust circulation under the effect of two chambered rotors when main rotor rotates the half-turn, and main rotor rotates the round and accomplishes 4 times advance exhaust circulation, and owing to structural symmetrical arrangement, the radial atress of main rotor is balanced each other, and the operation is more steady than mode 1.

Mode 3:

the N is equal to or more than 3 time cavity-dividing rotor volume mechanism, the structure is similar to the double cavity-dividing volume mechanism and is explained according to the 3 cavity-dividing rotor schematic diagram of fig. 5, the N cavity-dividing rotor volume mechanism is composed of a main rotor 1 with radius R, N cavity-dividing rotors 4 with radius R, a cylinder body 5, a fixed gear 8, N idle gears 9, N gears 10, a rotor end cover for covering the main rotor 1 and the N cavity-dividing rotors 4 and a cylinder body end cover for covering two ends of the cylinder body, and the center distance between the main rotor 1 and the cavity-dividing rotors 4 is L.

Compared with the mode 2, the main rotor 1 is provided with N grooves which are uniformly distributed in the circumference, the cylinder body 5 is provided with N bulges which are uniformly distributed in the circumference, the rotor end cover on one side is correspondingly provided with N cavity-dividing rotor rotating shaft holes which are uniformly distributed in the circumference, the rotor end cover on the other side is provided with N idle gear shafts which are uniformly distributed in the circumference except the rotating shaft holes of the cavity-dividing rotors which are uniformly distributed in the circumference, and as the rotating parts are symmetrically distributed in the circumference, the center of mass can be formed on the rotating shaft of the main rotor 1 as long as the moving parts are homogeneous.

The fixed gear 8, the N idle gears 9 and the N gears 10 of the N cavity-dividing volume mechanism form N groups of transmission groups, the speed ratio of each group is-N: 1,

the inner wall of the cylinder body of the N cavity dividing volume mechanism is provided with N bulges which are uniformly distributed on the circumference in the same mode 1, each two symmetrical curved surfaces of the bulges and the two symmetrical curved surfaces of the cavity dividing rotor groove can also obtain curved surfaces by simulating conjugate motion, a large arc curved surface with the radius slightly larger than L + R is arranged between the N bulges, and a small arc curved surface with the radius of R is respectively arranged on each N bulge. When the cavity-dividing rotor is positioned in the middle of the large arc surface of the cylinder body as shown in fig. 5, two sides of the groove of the cavity-dividing rotor are positioned in the groove of the main rotor.

Starting to rotate the main rotor 1 of the cavity-dividing rotor volume mechanism clockwise as shown in the position of FIG. 5, rotating the N cavity-dividing rotors anticlockwise at N times of the rotation speed of the main rotor under the action of the gear trains 8, 9 and 10, and rotating the N cavities A2 and A2 anticlockwise²、A2³……A2ⁿThe air inlet from the corresponding air inlet is enlarged, and N cavities A1 and A1²、A1³……A1ⁿBecomes smaller and exhausts from the corresponding exhaust port, and N chambers A3, A3²、A3³……A3ⁿCompressed and then passes through N chambers A3, A3²、A3³……A3ⁿIs communicated with the exhaust port for exhausting; when the main rotor rotates for 1/N circle, the N cavity-dividing rotor volume mechanism completes N ^2 times of air inlet and exhaust circulation under the action of the N cavity-dividing rotors, the main rotor rotates for a circle to complete N ^2 times of air inlet and exhaust circulation, and the radial stress of the main rotor is balanced due to the uniform distribution of the circumference on the structure, and the rotating part operates very stably.

Mode 4: in the mode 1.2.3, the inlet and outlet of the cylinder body 5 are widened to the extent that when the chambered rotor 4 is faced to the projection of the cylinder body, both sides of the groove of the chambered rotor 4 are aligned with the inlet and outlet sides of the cylinder body 5, so that the chamber a3 can always keep the inlet and outlet communicated, and can be applied to a liquid pump and a motor.

The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.