CN210422766U

CN210422766U - Fluid energy conversion device and rotary engine

Info

Publication number: CN210422766U
Application number: CN201921245991.4U
Authority: CN
Inventors: 李松
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-03
Filing date: 2019-08-03
Publication date: 2020-04-28
Anticipated expiration: 2029-08-03

Abstract

The utility model relates to a fluid energy conversion device and rotary engine. The closed planetary roller comprises a stator and a rotor positioned in an inner cavity of the stator, a closed working cavity is formed between the stator and the rotor, two planetary rollers which are 180 degrees from each other are arranged on the rotor, the outer contour line of the cross section of the working cavity is a closed line formed by connecting a first arc line, a second arc line, a first curve, a second curve, a third curve and a fourth curve, the inner contour line of the cross section of the working cavity takes the axis of the rotor as the center of a circle, the radius of the rotor is a circle with the radius, and the contour line of the cross section of the planetary roller is a closed line formed by connecting a third arc line, a fourth arc line, a fifth curve and a sixth curve. The utility model discloses can satisfy simultaneously that the fluid volume is variable, the reliable sealed requirement of rotor for the stator coaxial line of fluid to promote fluid energy conversion device and rotary engine's performance.

Description

Fluid energy conversion device and rotary engine

Technical Field

The utility model relates to a fluid energy conversion device and rotary engine, accessible fluid volume change converts fluid pressure potential energy into drive torque, or converts input torque into fluid kinetic energy or potential energy, mainly is applied to fields such as internal-combustion engine, steam turbine, hydraulic turbine, compressor, pneumatic motor, hydraulic motor, fluid pump, vacuum pump.

Background

At present, many fluid energy conversion devices convert energy or transfer fluid through volume change of fluid, and the volume change of fluid is mostly realized through relative rotation motion between a stator and a rotor, such as a rotary engine, a steam turbine, a water turbine, a compressor, a pneumatic motor, a hydraulic pump, a vacuum pump, and the like. The mechanical structural forms of the devices are various, and include blade type, impeller type, turbine type, vortex type, runner type, rotary blade type, rotary swing type, sliding blade type, gear type, screw type, roots type, claw type and the like, but the structural forms can not simultaneously meet the requirements of variable fluid volume, reliable fluid sealing and coaxial rotation of the rotor relative to the stator, thereby causing some defects.

Firstly, a blade type: for example, the blades on the rotor of a steam turbine are arranged and combined on the rotor in a certain mode, mainly for the conversion of kinetic energy and less for the conversion of pressure potential energy.

The method has the following defects: poor sealing performance, low conversion efficiency and complex structure.

Secondly, a rotating wheel type: for example, the rotating wheels on the rotor of the water turbine realize the conversion of potential energy and kinetic energy of water flow through a plurality of rotating wheels on the rotor.

The method has the following defects: poor sealing performance, low conversion efficiency and large vibration.

Thirdly, rotating the sheet type: when the rotor eccentrically arranged in the cylinder body rotates, the sliding vane in the longitudinal groove of the rotor is forced to cling to the cylinder wall to freely slide along the radial direction, so that fluid is promoted to circularly enter and exit.

The method has the following defects: sliding friction exists between the rotor and the pump cavity, the rotor not only does linear reciprocating motion, but also eccentrically rotates, the sealing performance is not high, the rotating speed is not high, and the abrasion, the energy consumption and the vibration are large.

Fourthly, rotating and swinging: the rotor rotates around the eccentric shaft in the cylinder body, and fluid is separated through a slide vane or a slide valve, so that the separated volume is periodically changed, and the fluid is promoted to enter and exit. The method is mainly applied to vacuum pumps and the like.

The method has the following defects: poor sealing performance, poor dynamic balance performance, large abrasion, large vibration noise, low rotating speed and low energy efficiency.

Fifthly, screw type: the fluid is driven to enter and exit (or be compressed) through the reverse rotation of a pair of mutually meshed spiral male and female rotors (screw rods) in the cylinder, and the device is mainly applied to liquid pumps, compressors, vacuum pumps, blowers and the like.

The method has the following defects: the processing and assembling difficulty is high, the sealing effect is difficult to improve due to the shape of the screw and the dynamic meshing mode, the clearance leakage is high, the cost is high, the size is large, the discharge capacity is small, and the vibration is large under certain conditions.

Sixthly, Roots type: the fluid is driven to circulate in and out by the synchronous and reverse rotation of two mutually meshed Roots rotors (8-shaped, three-lobe and four-lobe) in the cylinder, and the two rotors are mainly applied to compressors, vacuum pumps, blowers and the like.

The method has the following defects: the sealing effect of the rotor is difficult to improve due to the appearance and the meshing mode of the rotor, the gap leakage is large, the energy efficiency is not high, and the processing difficulty is large.

Seventhly, vortex type: the double-function scroll compressor is formed by mutually meshing a movable scroll and a fixed scroll of two double-function equation molded lines, the movable scroll performs translation eccentric rotation (non-autorotation) with a small radius around the center of a base circle of the fixed scroll under the drive of an eccentric shaft, fluid is gradually compressed in a plurality of crescent compression cavities formed by meshing the movable scroll and the fixed scroll, and then the fluid is continuously discharged from an axial hole in the center of the fixed scroll, and the double-function scroll compressor is mainly applied to compressors and the like.

The method has the following defects: poor leakproofness, clearance leak great, compression ratio is low, and the eccentric motion of driving disk has restricted the rotational speed and has improved, and have vibrations, and the volume flow is lower.

Eighthly, impeller type: such as gas turbines and jet engines, the impeller is generally composed of a disk, a shroud, and blades. The fluid rotates at high speed with the impeller under the action of the impeller blades, and the fluid is acted by the rotating centrifugal force and flows in the impeller in a diffusion manner, so that the pressure of the fluid after passing through the impeller is improved.

The method has the following defects: the lower compression ratio affects the fuel combustion efficiency and is noisy.

Ninthly, a turbine type: such as gas turbines and jet engines, the turbine uses the fluid with energy to impact the propeller blades, and the main shaft connected with the turbine is driven to rotate, so that the kinetic energy of the fluid is converted into mechanical energy.

The method has the following defects: the turbine has low conversion utilization rate of the fuel gas energy and is easy to cause turbulence to the jet gas.

Ten, rotor engine: the pressure potential energy of gas expansion is converted into the driving torque of an output shaft, the conversion efficiency is high, but the technology of only a Mazda rotary engine (Wankel) is relatively mature at present.

The method has the following defects: the three tops of the triangular rotor and the stator wall are always in sliding friction with constantly changing positions, so that the abrasion is large, the sealing effect of fluid is influenced, the oil consumption is high, and the emission is high; the compression ratio is low, the combustion efficiency of fuel is low, and the emission is high; the elongated combustion chamber shape also affects the flame propagation speed, further affecting the combustion efficiency of the fuel. The rotor eccentrically rotates in the stator relative to the stator, and the rotor revolves around the center of the output shaft and simultaneously rotates around the center of a convex shaft on the output shaft, so that the rotor is difficult to provide good lubrication and cooling, and the vibration and energy loss are large. The compression ratio of the engine is low, so that the combustion cannot be sufficient, the combustion efficiency is low, the emission is difficult to reach the standard, the flame propagation speed is also influenced by the shape of a long and narrow combustion chamber, the combustion efficiency of the fuel is further influenced, and the low compression ratio causes that only an ignition mode can be adopted but a compression ignition mode cannot be adopted, namely only gasoline can be used as the fuel but diesel oil cannot be used.

Disclosure of Invention

The utility model aims at providing a fluid energy conversion device makes it can satisfy simultaneously that the fluid volume is variable, the reliable sealed and rotor of fluid is for the rotatory requirement of stator coaxial line to promote fluid energy conversion device's performance.

Another object of the present invention is to provide a rotary engine, which can satisfy the requirements of the variable fluid volume, the fluid-tight seal and the rotation of the rotor relative to the stator coaxial line, so as to improve the performance of the rotary engine.

The utility model discloses a fluid energy conversion device, including stator and the rotor that is arranged in stator cavity, the rotor passes through the rotor shaft and rotatably supports the both ends at the stator, the rotor is cylindrical, it and stator coaxial line normal running fit in stator cavity, on the cylindrical inner chamber wall with rotor normal running fit's stator, seted up the recess along circumference, make and form airtight working chamber between stator and the rotor, the inner contour line of this working chamber cross section is for using the rotor axle center as the centre of a circle, the rotor radius is the circular of radius, the outer contour line of this working chamber cross section is the closed line that is formed by first circular arc line, second circular arc line, first curve, second curve, third curve and fourth curve connection; two chamber grooves have been seted up along the axial on the rotor face of cylinder, two chamber grooves are each other 180 in rotor circumference, the contour line of chamber groove cross section is the circular arc line, the both ends face of chamber groove respectively with the both sides face of recess flushes, the intracavity is provided with the planet roller, the planet roller passes through the roller and rotatably supports at the both ends of rotor, and planet roller and chamber groove coaxial line, the contour line of planet roller cross section is by the third circular arc line, fourth circular arc line, the closed line that fifth curve and sixth curve are connected and form, be the figure that becomes central symmetry about planet roller cross section central point, in the plane rectangular coordinate system that uses this central point as the original point, the equation of fifth curve is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b。

The third arc line and the fourth arc line are symmetrical relative to the ordinate axis, and the radius of the third arc line and the radius of the fourth arc line are consistent with the radius of the contour line of the cross section of the cavity groove and are R₃- R₁。

In the outer contour line of the cross section of the working cavity, a first arc line is connected between a first curve and a fourth curve, a second arc line is connected between a second curve and a third curve, the first curve is connected with the second curve, the third curve is connected with the fourth curve, the first arc line and the second arc line are arc lines taking the axis of a rotor as the center of a circle, the outer contour line of the cross section of the working cavity is a figure which is centrosymmetric about the central point of the cross section of the rotor, in a plane rectangular coordinate system taking the central point as the origin, the first arc line and the second arc line are symmetric about a vertical coordinate axis, and the first curve and the fourth curve as well as the second curve and the third curve are symmetric about a horizontal coordinate axis.

The equation for the first curve is:

（x-a）²+（y-b）²- R₁ ²=0, wherein: x is more than or equal to 0 and less than or equal to a.R₃/（R₃- R₁），b·R₃/（R₃- R₁）≤y≤（R₁+b）。

The equation for the second curve is:

（x+a）²+（y-b）²- R₁ ²=0, wherein: -a.R₃/（R₃- R₁）≤x≤0，b·R₃/（R₃- R₁）≤y≤（R₁+b）。

In the above formulae, a = R₁·(1-(( R₂ ²+2·R₁·R₃- R₃ ²)/(2· R₁·R₂))²)^1/2，

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)。

Wherein R is₁Is the distance between the axis of the planetary roller and the axis of the rotor, R₂Radius of the rotor, R₃The radius of the first and second circular arc lines in the outer contour line of the cross section of the working cavity.

The planetary rollers are in running fit with the cavity grooves in the cavity grooves, and two end faces of the planetary rollers are attached to two end faces of the cavity grooves and two side faces of the grooves.

And when the rotor rotates, the two planetary rollers only do circular translation motion without rotation relative to the stator under the action of the planetary roller synchronous control mechanism.

Two fluid inlets and two fluid outlets which are communicated with the working cavity are formed in the stator, and through openings of the two fluid inlets in the inner wall of the stator are respectively positioned on one side of a curved surface of the inner wall of the stator corresponding to a first curve near a crest line of the inner wall of the stator corresponding to a connection point of the first curve and a second curve and on one side of a curved surface of the inner wall of the stator corresponding to a third curve near a crest line of the inner wall of the stator corresponding to a connection point of a third curve and a fourth curve; the through holes of the two fluid outlets on the inner wall of the stator are respectively positioned on one side of the curved surface of the inner wall of the stator corresponding to a second curve near the crest line of the inner wall of the stator corresponding to the connection point of the first curve and the second curve, and on one side of the curved surface of the inner wall of the stator corresponding to a fourth curve near the crest line of the inner wall of the stator corresponding to the connection point of the third curve and the fourth curve.

The through holes of the fluid inlet on the inner wall of the stator are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the first curve and the third curve; and the through holes of the fluid outlet on the inner wall of the stator are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the second curve and the fourth curve.

And the group of fluid inlets and the group of fluid outlets which are positioned on the stator inner wall curved surfaces corresponding to the first curve and the second curve, and the group of fluid inlets and the group of fluid outlets which are positioned on the stator inner wall curved surfaces corresponding to the third curve and the fourth curve can be simultaneously and respectively covered by the planetary roller curved surfaces corresponding to the fifth curve and the sixth curve.

Alternatively, the through openings of the fluid inlet and the fluid outlet on the inner wall of the stator can also be positioned on the inner wall of the end part of the stator.

Further, when the rotor rotates to the position that the ridge line of the inner wall of the stator is in contact with the curved surface of the planetary roller corresponding to the fifth curve and the sixth curve, the two fluid inlets and the two fluid outlets can be simultaneously and respectively communicated with four closed spaces formed between the curved surface of the planetary roller and the inner wall of the stator.

Rotor engine, including stator and the rotor that is arranged in stator cavity, the rotor passes through rotor shaft and rotatably supports at the both ends of stator, its characterized in that: the rotor is cylindrical, and is coaxially and rotatably matched with the stator in the inner cavity of the stator, a groove is formed in the wall of the cylindrical inner cavity of the stator which is rotatably matched with the rotor along the circumferential direction, so that a closed working cavity is formed between the stator and the rotor, the inner contour line of the cross section of the working cavity is a circle which takes the axis of the rotor as the center of the circle, the radius of the rotor is a radius, and the outer contour line of the cross section of the working cavity is a closed line formed by connecting a first arc line, a second arc line, a first curve, a second curve, a third curve and a fourth curve; two chamber grooves have been seted up along the axial on the rotor face of cylinder, two chamber grooves are each other 180 in rotor circumference, the contour line of chamber groove cross section is the circular arc line, the both ends face of chamber groove respectively with the both sides face of recess flushes, the intracavity is provided with the planet roller, the planet roller passes through the roller and rotatably supports at the both ends of rotor, and planet roller and chamber groove coaxial line, the contour line of planet roller cross section is by the third circular arc line, fourth circular arc line, the closed line that fifth curve and sixth curve are connected and form, be the figure that becomes central symmetry about planet roller cross section central point, in the plane rectangular coordinate system that uses this central point as the original point, the equation of fifth curve is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b。

The third arc line and the fourth arc line are symmetrical relative to the ordinate axis, the radius of the third arc line and the radius of the fourth arc line are consistent with the radius of the contour line of the cross section of the cavity groove,is R₃- R₁。

The equation for the first curve is:

The equation for the second curve is:

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)。

The planetary rollers are in running fit with the cavity grooves in the cavity grooves, two end faces of the planetary rollers are attached to two end faces of the cavity grooves and two side faces of the groove, and air guide grooves are transversely formed in the curved surfaces of the planetary rollers corresponding to the fifth curves.

A fluid inlet and a fluid outlet which are communicated with the working cavity are formed in the stator, and a through hole of the fluid inlet in the inner wall of the stator is formed in one side of a curved surface of the inner wall of the stator, corresponding to a third curve near a crest line of the inner wall of the stator, corresponding to a connection point of the third curve and a fourth curve; the through hole of the fluid outlet on the inner wall of the stator is positioned on one side of the curved surface of the inner wall of the stator corresponding to the fourth curve near the crest line of the inner wall of the stator corresponding to the connection point of the third curve and the fourth curve.

And when the two planetary rollers are positioned on the ordinate axis of a plane rectangular coordinate system taking the central point of the cross section of the rotor as the origin, the space formed between the curved surface of the planetary roller corresponding to the fifth curve and the curved surface of the inner wall of the stator corresponding to the first curve and the second curve is communicated with the oil spray nozzle.

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b。

The equation for the first curve is:

The equation for the second curve is:

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)。

The planet roller is in running fit with the cavity groove in the cavity groove, two end faces of the planet roller are attached to two end faces of the cavity groove and two side faces of the groove, and an air guide groove is transversely formed in the curved surface where the fifth curve of the planet roller is located.

And when the two planetary rollers are positioned on the ordinate axis of a plane rectangular coordinate system taking the central point of the cross section of the rotor as the origin, the space formed between the curved surface of the planetary roller corresponding to the fifth curve and the curved surfaces of the stators corresponding to the first curve and the second curve is communicated with the oil spray nozzle and the spark plug.

Fluid energy conversion device owing to have this kind of structure, can realize the energy conversion of following mode smoothly:

firstly, after high-pressure fluid enters and exits through the fluid inlet and the fluid outlet, the rotor can be driven to rotate, and therefore the energy of the fluid is converted into output power (such as a steam turbine, a water turbine, a pneumatic motor and a hydraulic motor). And secondly, in the process that the mechanical power drives the rotor to rotate through the rotor shaft, the volume of the working cavity is changed, fluid enters the working cavity from the fluid inlet under the action of negative pressure and is discharged from the fluid outlet under the action of high pressure, and therefore mechanical energy is converted into fluid kinetic energy to achieve fluid conveying (such as a compressor, a hydraulic pump, a vacuum pump and a blower). The fluid energy conversion device realizes energy conversion through the change of the volume of fluid, has simple structure, good fluid sealing performance and high energy conversion efficiency, and the rotor rotates coaxially relative to the stator, so the vibration and the noise are low.

Rotor engine realizes energy conversion through gaseous volumetric change, its simple structure, and gaseous leakproofness is good, and energy conversion efficiency is high. The rotor rotates coaxially relative to the stator, vibration and noise are low, the lubricating oil channel and the cooling liquid channel are formed, and the rotor and the planetary roller can be reliably lubricated and cooled. In the rotation process of the rotor, the four vertex angle ridge lines of the planetary roller are only contacted with the curved surfaces corresponding to the first curve, the second curve, the third curve and the fourth curve of the inner wall of the stator respectively, so the abrasion of the planetary roller is small. The compression ratio of the rotary engine is high, such as taking the radius R of a first circular arc line and a second circular arc line in the outer contour line of the cross section of the working cavity₃=100mm, rotor radius R₂=85mm, planetary roller radius R₃- R₁When the compression ratio is more than 60 when the engine is 30mm, the combustion efficiency can be greatly improved, and various high-performance rotary engines can be developed.

Drawings

Fig. 1 is a schematic sectional view along the rotor shaft according to the present invention.

Fig. 2 is a schematic view (fluid energy conversion device) rotated by 90 ° in the sectional view taken along line a-a in fig. 1.

Fig. 3 is a schematic view rotated by 90 deg. in a section taken along line a-a in fig. 1 (compression ignition rotary engine).

Fig. 4 is a schematic view rotated by 90 ° in a section taken along line a-a in fig. 1 (a spark plug ignition rotary engine).

Fig. 5 is a schematic view of the cross-section taken along line C-C of fig. 1 rotated 90.

Fig. 6 to 12 are schematic views illustrating a process of rotating the rotor within the stator for half a cycle clockwise in the fluid energy conversion device shown in fig. 2.

Fig. 13 to 19 are schematic views illustrating a process of rotating the rotor in the stator for half a clockwise rotation in the rotary engine shown in fig. 3.

Fig. 20 to 26 are schematic views illustrating a process of rotating the rotor in the stator for half a clockwise rotation in the rotary engine shown in fig. 4.

Fig. 27 is a schematic cross-sectional contour line view of the stator, rotor and planetary roller of the present invention when the planetary roller is located on the ordinate axis.

Fig. 28 is a schematic cross-sectional view of planetary rollers in a fluid energy conversion device.

FIG. 29 is a schematic cross-sectional view of a planetary roller in a rotary engine.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 and 2, the fluid energy conversion device includes a stator 1 and a rotor 6 located in an inner cavity of the stator 1, the rotor 6 is rotatably supported at two ends of the stator 1 through a rotor shaft 7, the rotor 6 is cylindrical, and is coaxially and rotatably matched with the stator in the inner cavity of the stator 1, a groove 9 is formed on the cylindrical inner cavity wall of the stator 1 rotatably matched with the rotor 6 along the circumferential direction, so that a closed working cavity 12 is formed between the stator 1 and the rotor 6, an inner contour line of a cross section of the working cavity 12 is a circle with an axis of the rotor 6 as a center and a radius of the rotor 6 as a radius, and an outer contour line of a cross section of the working cavity 12 is a closed line formed by connecting a first arc line 17, a second arc line 20, a first curve 16, a second curve 21, a third curve 19 and a fourth curve 18. As shown in fig. 27, the first circular arc line 17 is a circular arc line B₁B₄The second circular arc line 20 is a circular arc line B₂B₃The first curve 16 is a curve M₁B₁Of 1 atThe second curve 21 is curve M₁B₂The third curve 19 is the curve M₂B₃The fourth curve 18 is curve M₂B₄. Two cavity grooves 13 are axially formed in the cylindrical surface of the rotor 6, the two cavity grooves 13 form an angle of 180 degrees with each other in the circumferential direction of the rotor, the outline of the cross section of each cavity groove 13 is an arc line, two end faces of each cavity groove 13 are respectively flush with two side faces of the corresponding groove 9, planetary rollers 8 are arranged in the cavity grooves 13, the planetary rollers 8 are rotatably supported at two ends of the rotor 6 through the roller shafts 2, and the planetary rollers 8 and the cavity grooves 13 are coaxial. As shown in fig. 27 and 28, the outline of the cross section of the planetary roller 8 is a closed line formed by connecting a third arc line 22, a fourth arc line 24, a fifth curve 23, and a sixth curve 25, and the third arc line 22 is an arc line D₁D₄The fourth arc line 24 is an arc line D₂D₃The fifth curve 23 is a curve D₁D₂The sixth curve 25 is a curve D₃D₄The contour line is a figure that is centrosymmetric with respect to the center point of the cross section of the planetary roller 8, and in a planar rectangular coordinate system with the center point as the origin (the horizontal dotted line in fig. 28 is the abscissa axis, and the vertical dotted line is the ordinate axis), the equation of the fifth curve 23 is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b。

The third arc line 22 and the fourth arc line 24 are symmetrical relative to the ordinate axis, and the radius of the third arc line 22 and the radius of the fourth arc line 24 are consistent with the radius of the cross section contour line of the cavity groove 13 and are R₃- R₁。

As shown in fig. 27, in the outer contour line of the cross section of the working chamber 12, a first circular arc line 17 is connected between the first curve 16 and the fourth curve 18, and two end points of the first circular arc line 17 are B₁Points and B₄Point; the second arc line 20 is connected between the second curve 21 and the third curve 19, and two end points of the second arc line 20 are B₂Points and B₃Point; the first curve 16 and the second curve 21 are connected to M₁At point, the third curve 19 and the fourth curve 18 are connected to M₂Point, first and second arc lines17. The line 20 is an arc line having the axis of the rotor 6 as the center, the outer contour line of the cross section of the working chamber 12 is a figure having central symmetry with respect to the center point of the cross section of the rotor 6, and in a planar rectangular coordinate system having the center point as the origin (the horizontal dotted line in fig. 27 is the abscissa axis, and the vertical dotted line is the ordinate axis), the first arc line 17 and the second arc line 20 are symmetrical with respect to the ordinate axis, and the first curve 16 and the fourth curve 18, and the second curve 21 and the third curve 19 are symmetrical with respect to the abscissa axis.

The equation for the first curve 16 is:

The equation for the second curve 21 is:

That is, the abscissa of the M1 point is 0 and the ordinate is R₂(ii) a The abscissa of the point B1 is a.R₃/（R₃- R₁) Ordinate is b.R₃/（R₃- R₁) (ii) a The abscissa of the point B2 is-a.R₃/（R₃- R₁) Ordinate is b.R₃/（R₃- R₁）。

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)；

Wherein R is₁Is the distance between the axis of the planetary roller 8 and the axis of the rotor 6, R₂Radius of rotor 6, R₃Is a cross section of the working chamber 12The radii of the first and second

circular arc lines

17, 20 in the outer contour lines.

The planetary rollers 8 are in running fit with the cavity grooves in the cavity grooves 13, and two end faces of the planetary rollers 8 are attached to two end faces of the cavity grooves 13 and two side faces of the grooves 9.

As shown in fig. 27, the fifth curve 23 is actually a connection point M of the first curve 16 and the second curve 21₁A sixth curve 25 is a connecting point M of the third curve 19 and the fourth curve 18 on the locus drawn on the cross section of the planetary roller 8₂The first curve 16 is a connecting point D of a fifth curve 23 and a third circular arc line 22 on a trajectory line drawn on the cross section of the planetary roller 8₁A second curve 21 is a connecting point D of a fifth curve 23 and a fourth arc 24 on a track line drawn on the bottom surface of the groove 9 of the stator 1₂A third curve 19 is a connecting point D of a sixth curve 25 and a fourth circular arc 24 on a track line drawn on the bottom surface of the groove 9 of the stator 1₃A fourth curve 18 is a connecting point D of a sixth curve 25 and a third arc 22, and is a track line drawn on the bottom surface of the groove 9 of the stator 1₄A track line drawn on the bottom surface of said groove 9 of the stator 1.

As shown in fig. 1 and 5, a planetary roller synchronization control mechanism is arranged on the end face side of the rotor 6, and comprises a synchronizing gear 5, a central gear 3 and a synchronizing toothed belt 4, the synchronizing gear 5 is fixed at one end of the roller shaft 2, the central gear 3 is fixed on the stator 1 and is coaxial with the rotor 6, the central gear 3 is in transmission connection with the synchronizing gear 5 through the synchronizing toothed belt 4, and when the rotor 6 rotates, the two planetary rollers 8 only do circular translation motion without rotation relative to the stator 1 under the action of the planetary roller synchronization control mechanism. Or, under the action of the planetary roller synchronous control mechanism, the two planetary rollers 8 rotate in the same rotating speed and opposite directions relative to the rotor 6.

As shown in fig. 2, two fluid inlets 11 and two fluid outlets 10 communicated with the working chamber 12 are opened on the stator 1, through-holes of the two fluid inlets 11 on the inner wall of the stator 1 are respectively located on the curved surfaces of the inner wall of the stator corresponding to the first and third curves 16, 19, through-holes of the two fluid outlets 10 on the inner wall of the stator 1 are respectively located on the curved surfaces of the inner wall of the stator corresponding to the second and fourth curves 21, 18, a group of fluid inlets 11 and fluid outlets 10 on the curved surfaces of the inner wall of the stator corresponding to the first curve 16 and the second curve 21, and a group of fluid inlets and fluid outlets on the curved surfaces of the inner wall of the stator corresponding to the third curve 19 and the fourth curve 18 can be simultaneously and respectively covered by the curved surfaces of the planetary rollers corresponding to the fifth curve 23 and the sixth curve 25, so that the two fluid inlets 11 and the two fluid outlets 10 cannot be directly communicated with each other, fluid leakage caused by direct communication between the fluid inlets and the fluid outlets can be avoided (the through holes of the two fluid inlets 11 and the two fluid outlets 10 on the inner wall of the stator can also be positioned on the inner wall of the end part of the stator, when the rotor 6 rotates until the ridge line of the inner wall of the stator contacts with the planet roller curved surfaces corresponding to the fifth curve 23 and the sixth curve 25, namely the position shown in fig. 6 and the position close to the position, the two fluid inlets 11 and the two fluid outlets 10 can be simultaneously and respectively communicated with four closed spaces formed between the planet roller curved surfaces and the inner wall of the stator).

Fig. 6 to 12 show the state of the rotor 6 during a half-turn clockwise rotation in the stator 1, and with reference to fig. 27, during a half-turn clockwise rotation of the rotor 6 in the stator 1, D₁The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the first curve 16, D₂The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the second curve 21, D₃The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the third curve 19, D₄The vertex angle crest line of the planetary roller 8 corresponding to the point is only contacted with the curved surface corresponding to the fourth curve 18, the circular arc surface of the planetary roller 8 corresponding to the third circular arc line 22 is only contacted with the inner wall circular arc surface of the stator 1 corresponding to the first circular arc line 17, the circular arc surface of the planetary roller 8 corresponding to the fourth circular arc line 24 is only contacted with the inner wall circular arc surface of the stator 1 corresponding to the second circular arc line 20, and M is₁The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planet roller 8 corresponding to the fifth curve 23, M₂The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planetary roller 8 corresponding to the sixth curve 25.

As shown in fig. 6, the two planetary rollers 8 are located at the highest and lowest positions in the stator 1, respectively, and at this time, the two sets of fluid inlets 11 and fluid outlets 10 are simultaneously covered by the planetary roller curved surfaces corresponding to the fifth curve 23 and the sixth curve 25, respectively, and neither of the two fluid inlets 11 and the two fluid outlets 10 can communicate with the working chamber 12. When high-pressure fluid enters the inner cavity of the stator 1 through the two fluid inlets 11, the high-pressure fluid applies pressure to the two planetary rollers 8, so that the rotor 6 is driven to rotate. As shown in fig. 6 to 12, during the rotation of the rotor 6, the two planetary rollers 8 continuously press the fluid in the working chamber 12 out of the two fluid outlets 10, so as to convert the energy of the fluid into output power, such as a steam turbine, a water turbine, a pneumatic motor, a hydraulic motor, and the like.

During the process that the mechanical power drives the rotor 6 to rotate through the rotor shaft 7, the volume of the working cavity 12 changes, as shown in fig. 6 to 12, fluid enters the working cavity 12 from the two fluid inlets 11 under the action of negative pressure and is discharged from the two fluid outlets 10 under the action of high pressure of the planetary rollers 8, so that the mechanical energy is converted into fluid kinetic energy to realize fluid conveying, such as a compressor, a hydraulic pump, a vacuum pump, a blower and the like.

Example 2:

as shown in fig. 1 and 3, the rotor engine (compression ignition type) includes a stator 1 and a rotor 6 located in an inner cavity of the stator 1, the rotor 6 is rotatably supported at two ends of the stator 1 through a rotor shaft 7, the rotor 6 is cylindrical, and is coaxially and rotatably matched with the stator in the inner cavity of the stator 1, a groove 9 is formed on the wall of the cylindrical inner cavity of the stator 1 rotatably matched with the rotor 6 along the circumferential direction, so that a closed working cavity 12 is formed between the stator 1 and the rotor 6, an inner contour line of the cross section of the working cavity 12 is a circle with the axis of the rotor 6 as the center and a radius of the rotor 6 as the radius, and an outer contour line of the cross section of the working cavity 12 is a closed line formed by connecting a first arc line 17, a second arc line 20, a first curve 16, a second curve 21, a third curve 19 and a fourth curve 18. As shown in fig. 27, the first circular arc line 17 is a circular arc line B₁B₄The second circular arc line 20 is a circular arc line B₂B₃The first curve 16 is a curve M₁B₁The second curve 21 isCurve M₁B₂The third curve 19 is the curve M₂B₃The fourth curve 18 is curve M₂B₄. Two cavity grooves 13 are axially formed in the cylindrical surface of the rotor 6, the two cavity grooves 13 form an angle of 180 degrees with each other in the circumferential direction of the rotor, the outline of the cross section of each cavity groove 13 is an arc line, two end faces of each cavity groove 13 are respectively flush with two side faces of the corresponding groove 9, planetary rollers 8 are arranged in the cavity grooves 13, the planetary rollers 8 are rotatably supported at two ends of the rotor 6 through the roller shafts 2, and the planetary rollers 8 and the cavity grooves 13 are coaxial. As shown in fig. 27 and 29, the outline of the cross section of the planetary roller 8 is a closed line formed by connecting a third arc line 22, a fourth arc line 24, a fifth curve 23, and a sixth curve 25, and the third arc line 22 is an arc line D₁D₄The fourth arc line 24 is an arc line D₂D₃The fifth curve 23 is a curve D₁D₂The sixth curve 25 is a curve D₃D₄The contour line is a figure that is centrosymmetric with respect to the center point of the cross section of the planetary roller 8, and in a planar rectangular coordinate system with the center point as the origin (the horizontal dotted line in fig. 29 is the abscissa axis, and the vertical dotted line is the ordinate axis), the equation of the fifth curve 23 is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b。

As shown in fig. 27, in the outer contour line of the cross section of the working chamber 12, a first circular arc line 17 is connected between the first curve 16 and the fourth curve 18, and two end points of the first circular arc line 17 are B₁Points and B₄Point; the second arc line 20 is connected between the second curve 21 and the third curve 19, and two end points of the second arc line 20 are B₂Points and B₃Point; the first curve 16 and the second curve 21 are connected to M₁At point, the third curve 19 and the fourth curve 18 are connected to M₂The first and second circular arc lines 17, 20 are pointsThe first arc line 17 and the second arc line 20 are symmetrical with respect to the ordinate axis, and the first curve 16 and the fourth curve 18, and the second curve 21 and the third curve 19 are symmetrical with respect to the abscissa axis, in a planar rectangular coordinate system (the horizontal dotted line in fig. 27 is the abscissa axis, and the vertical dotted line is the ordinate axis) with the center point as the origin, where the outer contour line of the cross section of the working chamber 12 is a figure that is centrosymmetric with respect to the center point of the cross section of the rotor 6.

The equation for the first curve 16 is:

The equation for the second curve 21 is:

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)；

Wherein R is₁Is the distance between the axis of the planetary roller 8 and the axis of the rotor 6, R₂Radius of rotor 6, R₃Is the outer contour line of the cross section of the working cavity 12The radius of the first and second

circular arc lines

17, 20.

The planetary rollers 8 are in running fit with the cavity grooves in the cavity grooves 13, two end faces of the planetary rollers 8 are attached to two end faces of the cavity grooves 13 and two side faces of the groove 9, air guide grooves 26 are transversely formed in curved surfaces of the planetary rollers 8 corresponding to the fifth curves 23, when the two planetary rollers 8 are located on a vertical coordinate axis of a rectangular plane coordinate system with the central point of the cross section of the rotor 6 as an origin (namely, the position shown in fig. 13 and the positions close to the central point), the air guide grooves 26 can communicate two closed spaces, and one of the closed spaces is a space formed between the curved surfaces of the planetary rollers 8 corresponding to the fifth curves 23 and the inner wall of the stator 1 including the curved surface of the inner wall of the stator 1 corresponding to the first curve 16; the other sealed space is a space formed between the curved surface of the planetary roller 8 corresponding to the fifth curve 23 and the inner wall of the stator 1 including the curved surface of the inner wall of the stator 1 corresponding to the second curve 21.

As shown in fig. 3, a fluid inlet 11 and a fluid outlet 10 communicated with the working chamber 12 are formed in the stator 1, and a through hole of the fluid inlet 11 in the inner wall of the stator 1 is located on a curved surface of the inner wall of the stator corresponding to a third curve 19 near a ridge line of the inner wall of the stator 1 corresponding to a connection point of the third curve 19 and a fourth curve 18; the through hole of the fluid outlet 10 in the inner wall of the stator 1 is located on the curved surface of the inner wall of the stator corresponding to the fourth curve 18 near the ridge line of the inner wall of the stator 1 corresponding to the connection point of the third curve 19 and the fourth curve 18 (the fluid inlet 11 and the fluid outlet 10 may also be opened at the end of the stator 1, refer to example 1). In this embodiment, the fluid inlet 11 is an air inlet, and the fluid outlet 10 is an exhaust outlet.

As shown in fig. 3, an oil jet 14 is mounted on the stator 1, the oil jet 14 is located at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the second curve 21 (or at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the first curve 16, or at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the first and second curves 16, 21, or at an end portion of the stator 1), when the axial centers of the two planetary rollers 8 are located on a vertical axis of a rectangular plane coordinate system with the central point of the cross section of the rotor 6 as an origin (i.e., the position state shown in fig. 13), a space formed between the curved surface of the planetary roller 8 corresponding to the fifth curve 23 and the curved surface of the inner wall of the stator 1 corresponding to the first and second curves 16, 21 is communicated with the oil jet 14 (the axial centers of the two planetary rollers 8 may also be located near the vertical axis of the rectangular plane coordinate system with the central point of the cross section, i.e., the position states between the positions shown in fig. 13 to 14).

Fig. 13 to 19 show the state of the rotor 6 during a half-turn clockwise rotation in the stator 1, and in connection with fig. 27, during a half-turn clockwise rotation of the rotor 6 in the stator 1, D₁The planet corresponding to the pointThe apex angular edge of the roller 8 is in contact with only the curved surface corresponding to the first curve 16, D₂The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the second curve 21, D₃The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the third curve 19, D₄The vertex angle crest line of the planetary roller 8 corresponding to the point is only contacted with the curved surface corresponding to the fourth curve 18, the circular arc surface of the planetary roller 8 corresponding to the third circular arc line 22 is only contacted with the inner wall circular arc surface of the stator 1 corresponding to the first circular arc line 17, the circular arc surface of the planetary roller 8 corresponding to the fourth circular arc line 24 is only contacted with the inner wall circular arc surface of the stator 1 corresponding to the second circular arc line 20, and M is₁The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planet roller 8 corresponding to the fifth curve 23, M₂The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planetary roller 8 corresponding to the sixth curve 25.

As shown in fig. 13, the two planetary rollers 8 are respectively located at the highest position and the lowest position in the stator 1, at this time, air is compressed to the extreme between the planetary roller 8 located at the highest position in the stator 1 and the curved surface of the inner wall of the stator 1 corresponding to the first curve 16 and the second curve 21, after the fuel injection nozzle 14 injects fuel, the oil-gas mixed gas is subjected to compression ignition, and the expansion gas pushes the planetary roller 8, so that the rotor 6 is driven to rotate clockwise in the stator 1. During rotation, as shown in fig. 13 to 19, the exhaust air in the right working chamber 12 is pressed out of the fluid outlet 10 by the planetary roller 8, while the air in the left working chamber 12 is compressed by the other planetary roller 8, and at the same time, the air enters the left working chamber 12 again under the action of negative pressure. The rotor 6 is compression ignited twice in each revolution of the stator 1, and the rotor engine is a compression ignition type rotor engine without a spark plug.

Example 3:

as shown in fig. 1 and 4, the rotary engine (spark plug ignition type) comprises a stator 1 and a rotor 6 positioned in the inner cavity of the stator 1, the rotor 6 is rotatably supported at both ends of the stator 1 by a rotor shaft 7, the rotor 6 is cylindrical, and is coaxially and rotatably matched with the stator in the inner cavity of the stator 1 and is coaxially and rotatably matched with the rotor 6The inner contour line of the cross section of the working cavity 12 is a circle taking the axis of the rotor 6 as the center of a circle and the radius of the rotor 6 as the radius, and the outer contour line of the cross section of the working cavity 12 is a closed line formed by connecting a first arc line 17, a second arc line 20, a first curve 16, a second curve 21, a third curve 19 and a fourth curve 18. As shown in fig. 27, the first circular arc line 17 is a circular arc line B₁B₄The second circular arc line 20 is a circular arc line B₂B₃The first curve 16 is a curve M₁B₁The second curve 21 is a curve M₁B₂The third curve 19 is the curve M₂B₃The fourth curve 18 is curve M₂B₄. Two cavity grooves 13 are axially formed in the cylindrical surface of the rotor 6, the two cavity grooves 13 form an angle of 180 degrees with each other in the circumferential direction of the rotor, the outline of the cross section of each cavity groove 13 is an arc line, two end faces of each cavity groove 13 are respectively flush with two side faces of the corresponding groove 9, planetary rollers 8 are arranged in the cavity grooves 13, the planetary rollers 8 are rotatably supported at two ends of the rotor 6 through the roller shafts 2, and the planetary rollers 8 and the cavity grooves 13 are coaxial. As shown in fig. 27 and 29, the outline of the cross section of the planetary roller 8 is a closed line formed by connecting a third arc line 22, a fourth arc line 24, a fifth curve 23, and a sixth curve 25, and the third arc line 22 is an arc line D₁D₄The fourth arc line 24 is an arc line D₂D₃The fifth curve 23 is a curve D₁D₂The sixth curve 25 is a curve D₃D₄The contour line is a figure that is centrosymmetric with respect to the center point of the cross section of the planetary roller 8, and in a planar rectangular coordinate system with the center point as the origin (the horizontal dotted line in fig. 29 is the abscissa axis, and the vertical dotted line is the ordinate axis), the equation of the fifth curve 23 is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b。

The third arc line 22 and the fourth arc line 24 are symmetrical relative to the ordinate axis, and the radiuses of the third arc line 22 and the fourth arc line 24 and the cavity groove13 the radii of the cross-sectional contours are uniform and are R₃- R₁。

As shown in fig. 27, in the outer contour line of the cross section of the working chamber 12, a first circular arc line 17 is connected between the first curve 16 and the fourth curve 18, and two end points of the first circular arc line 17 are B₁Points and B₄Point; the second arc line 20 is connected between the second curve 21 and the third curve 19, and two end points of the second arc line 20 are B₂Points and B₃Point; the first curve 16 and the second curve 21 are connected to M₁At point, the third curve 19 and the fourth curve 18 are connected to M₂The first and second circular arc lines 17 and 20 are circular arc lines centered on the axis of the rotor 6, the outer contour line of the cross section of the working chamber 12 is a figure that is centered symmetrically with respect to the center point of the cross section of the rotor 6, the first and second circular arc lines 17 and 20 are symmetrical with respect to the ordinate axis, and the first and fourth curves 16 and 18, and the second and third curves 21 and 19 are symmetrical with respect to the abscissa axis in a planar rectangular coordinate system with the center point as the origin (the horizontal dotted line in fig. 27 is the abscissa axis, and the vertical dotted line is the ordinate axis).

The equation for the first curve 16 is:

The equation for the second curve 21 is:

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)；

Wherein R is₁Is the distance between the axis of the planetary roller 8 and the axis of the rotor 6, R₂Radius of rotor 6, R₃The radii of the first and second

circular arc lines

17, 20 in the outer contour line of the cross section of the working chamber 12.

The planetary rollers 8 are in running fit with the cavity grooves in the cavity grooves 13, two end faces of the planetary rollers 8 are attached to two end faces of the cavity grooves 13 and two side faces of the groove 9, air guide grooves 26 are transversely formed in curved surfaces of the planetary rollers 8 corresponding to the fifth curves 23, when the two planetary rollers 8 are located on a vertical coordinate axis of a plane rectangular coordinate system with the central point of the cross section of the rotor 6 as an origin (namely, the position shown in fig. 20 and the positions close to the central point), the air guide grooves 26 can communicate two closed spaces, and one of the closed spaces is a space formed between the curved surfaces of the planetary rollers 8 corresponding to the fifth curves 23 and the curved surface of the inner wall of the stator 1 corresponding to the first curve 16; the other sealed space is a space formed between the curved surface of the planetary roller 8 corresponding to the fifth curve 23 and the curved surface of the inner wall of the stator 1 corresponding to the second curve 21.

As shown in fig. 4, a fluid inlet 11 and a fluid outlet 10 communicated with the working chamber 12 are formed in the stator 1, and a through hole of the fluid inlet 11 in the inner wall of the stator 1 is located on a curved surface of the inner wall of the stator corresponding to a third curve 19 near a ridge line of the inner wall of the stator 1 corresponding to a connection point of the third curve 19 and a fourth curve 18; the through hole of the fluid outlet 10 in the inner wall of the stator 1 is located on the curved surface of the inner wall of the stator corresponding to the fourth curve 18 near the ridge line of the inner wall of the stator 1 corresponding to the connection point of the third curve 19 and the fourth curve 18 (the fluid inlet 11 and the fluid outlet 10 may also be opened at the end of the stator 1, refer to example 1). In this embodiment, the fluid inlet 11 is an air inlet, and the fluid outlet 10 is an exhaust outlet.

As shown in fig. 4, an oil nozzle 14 and a spark plug 15 are mounted on the stator 1, the oil nozzle 14 is located at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the second curve 21 (or located at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the first curve 16, or located at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the first and second curves 16, 21, or located at an end portion of the stator 1), the spark plug 15 is located at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the first curve 16 (or located at a stator portion corresponding to the curved surface of the inner wall of the stator corresponding to the second curve 21, or located at an end portion of the stator 1), when the axial centers of the two planetary rollers 8 are located on a vertical axis of a plane rectangular coordinate system with the central point of the cross section of the rotor 6 as an origin (i.e. the position state shown in fig. 20), the space formed between the curved surface of the planetary roller 8 corresponding to the fifth curve 23 and the curved surface of the stator 1 corresponding to the first and second curves 16 and 21 is in communication with the oil jet 14 and the spark plug 15 (the axial centers of the two planetary rollers 8 may be located near the ordinate axis of a rectangular plane coordinate system with the center point of the cross section of the rotor 6 as the origin, that is, in a positional state between the positions shown in fig. 20 to 21).

Fig. 20 to 26 show the state of the rotor 6 during a half-turn clockwise rotation in the stator 1, and in connection with fig. 27, during a half-turn clockwise rotation of the rotor 6 in the stator 1, D₁The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the first curve 16, D₂The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the second curve 21, D₃The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the third curve 19, D₄The vertex angle crest line of the planetary roller 8 corresponding to the point is only contacted with the curved surface corresponding to the fourth curve 18, the circular arc surface of the planetary roller 8 corresponding to the third circular arc line 22 is only contacted with the inner wall circular arc surface of the stator 1 corresponding to the first circular arc line 17, the circular arc surface of the planetary roller 8 corresponding to the fourth circular arc line 24 is only contacted with the inner wall circular arc surface of the stator 1 corresponding to the second circular arc line 20, and M is₁The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planet roller 8 corresponding to the fifth curve 23, M₂The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planetary roller 8 corresponding to the sixth curve 25.

As shown in fig. 20, the two planetary rollers 8 are respectively located at the highest position and the lowest position in the stator 1, at this time, air is compressed to the extreme between the planetary roller 8 located at the highest position in the stator 1 and the curved surface of the inner wall of the stator 1 corresponding to the first curve 16 and the second curve 21, the oil nozzle 14 sprays fuel oil, the spark plug 15 ignites, the oil-gas mixture is ignited, the expanding gas pushes the planetary roller 8, and then the rotor 6 is driven to rotate clockwise in the stator 1. During rotation, as shown in fig. 20 to 26, the exhaust air in the right working chamber 12 is pressed out of the fluid outlet 10 by the planetary roller 8, while the air in the left working chamber 12 is compressed by the other planetary roller 8, and at the same time, the air enters the left working chamber 12 again under the negative pressure. The oil-gas mixture is ignited twice per one rotation of the rotor 6 in the stator 1, and the rotary engine is a spark-ignition rotary engine.

Claims

1. A fluid energy conversion device comprising a stator (1) and a rotor (6) located in an inner cavity of the stator, the rotor being rotatably supported at both ends of the stator by a rotor shaft (7), characterized in that: the rotor is cylindrical, and is coaxially and rotatably matched with the stator in the inner cavity of the stator, a groove (9) is formed in the wall of the cylindrical inner cavity of the stator rotatably matched with the rotor along the circumferential direction, so that a closed working cavity (12) is formed between the stator and the rotor, the inner contour line of the cross section of the working cavity is a circle taking the axis of the rotor as the center of the circle, the radius of the rotor is a radius, and the outer contour line of the cross section of the working cavity is a closed line formed by connecting a first arc line (17), a second arc line (20), a first curve (16), a second curve (21), a third curve (19) and a fourth curve (18); two chamber grooves (13) have been seted up along the axial on the rotor face of cylinder, two chamber grooves are each other 180 degrees in rotor circumference, the contour line of chamber groove cross section is the circular arc line, the both ends face of chamber groove respectively with the both sides face of recess flushes, be provided with planet roller (8) in the chamber groove, the planet roller passes through roller (2) rotatably to be supported at the both ends of rotor, and planet roller and chamber groove coaxial line, the contour line of planet roller cross section is by third circular arc line (22), fourth circular arc line (24), the closed line that fifth curve (23) and sixth curve (25) are connected and are formed, become centrosymmetric figure about planet roller cross section central point, in the plane rectangular coordinate system who uses this central point as the original point, the equation of fifth curve is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b；

The third arc line and the fourth arc line are symmetrical relative to the ordinate axis, and the radius of the third arc line and the radius of the fourth arc line are consistent with the radius of the contour line of the cross section of the cavity groove and are R₃- R₁；

In the outer contour lines of the cross section of the working cavity, a first arc line is connected between a first curve and a fourth curve, a second arc line is connected between a second curve and a third curve, the first curve is connected with the second curve, the third curve is connected with the fourth curve, the first arc line and the second arc line are arc lines taking the axis of a rotor as the center of a circle, the outer contour lines of the cross section of the working cavity are graphs which are centrosymmetric about the center point of the cross section of the rotor, in a plane rectangular coordinate system taking the center point as the origin, the first arc line and the second arc line are symmetric about a vertical coordinate axis, and the first curve and the fourth curve as well as the second curve and the third curve are symmetric about a horizontal coordinate axis;

the equation for the first curve is:

（x-a）²+（y-b）²- R₁ ²=0, wherein: x is more than or equal to 0 and less than or equal to a.R₃/（R₃- R₁），b·R₃/（R₃- R₁）≤y≤（R₁+b）；

The equation for the second curve is:

（x+a）²+（y-b）²- R₁ ²=0, wherein: -a.R₃/（R₃- R₁）≤x≤0，b·R₃/（R₃- R₁）≤y≤（R₁+b）；

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)；

Wherein R is₁Is the distance between the axis of the planetary roller and the axis of the rotor, R₂Radius of the rotor, R₃The radius of a first arc line and a second arc line in the outer contour line of the cross section of the working cavity;

the planetary rollers are in running fit with the cavity grooves in the cavity grooves, and two end faces of the planetary rollers are attached to two end faces of the cavity grooves and two side faces of the grooves;

a planetary roller synchronous control mechanism is arranged on the end face side of the rotor (6), and when the rotor rotates, the two planetary rollers (8) only do circular translation motion without rotation relative to the stator (1) under the action of the planetary roller synchronous control mechanism;

two fluid inlets (11) and two fluid outlets (10) communicated with the working cavity are formed in the stator, through openings of the two fluid inlets in the inner wall of the stator are respectively positioned on one side of a curved surface of the inner wall of the stator corresponding to a first curve near a crest line of the inner wall of the stator corresponding to a connection point of a first curve (16) and a second curve (21), and on one side of a curved surface of the inner wall of the stator corresponding to a third curve near a crest line of the inner wall of the stator corresponding to a connection point of a third curve (19) and a fourth curve (18); the through holes of the two fluid outlets (10) on the inner wall of the stator are respectively positioned on the side of the curved surface of the inner wall of the stator corresponding to a second curve near the edge line of the inner wall of the stator corresponding to the connection point of a first curve (16) and a second curve (21), and on the side of the curved surface of the inner wall of the stator corresponding to a fourth curve near the edge line of the inner wall of the stator corresponding to the connection point of a third curve (19) and a fourth curve (18).

2. The fluid energy conversion device of claim 1, wherein: the through holes of the fluid inlet (11) on the inner wall of the stator are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the first curve (16) and the third curve (19); and the through holes of the fluid outlet (10) on the inner wall of the stator are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the second curve (21) and the fourth curve (18).

3. The fluid energy conversion device of claim 2, wherein: and a group of fluid inlet (11) and a group of fluid outlet (10) which are positioned on the curved surface of the inner wall of the stator corresponding to the first curve (16) and the second curve (21), and a group of fluid inlet and fluid outlet which are positioned on the curved surface of the inner wall of the stator corresponding to the third curve (19) and the fourth curve (18) can be simultaneously and respectively covered by the curved surfaces of the planetary rollers corresponding to the fifth curve (23) and the sixth curve (25).

4. The fluid energy conversion device of claim 1, wherein: and through openings of the fluid inlet (11) and the fluid outlet (10) on the inner wall of the stator (1) are positioned on the inner wall of the end part of the stator.

5. The fluid energy conversion device of claim 4, wherein: when the rotor (6) rotates to the fact that the crest line of the inner wall of the stator is in contact with the curved surface of the planetary roller corresponding to the fifth curve (23) and the sixth curve (25), the two fluid inlets (11) and the two fluid outlets (10) can be simultaneously and respectively communicated with four closed spaces formed between the curved surface of the planetary roller and the inner wall of the stator.

6. The fluid energy conversion device of claim 1, wherein: the planetary roller synchronous control mechanism comprises a synchronous gear (5), a central gear (3) and a synchronous toothed belt (4), the synchronous gear is fixed at one end of the roller shaft (2), the central gear is fixed on the stator (1) and coaxial with the rotor (6), and the central gear is in transmission connection with the synchronous gear through the synchronous toothed belt.

7. A rotary engine comprising a stator (1) and a rotor (6) located in the stator cavity, the rotor being rotatably supported at both ends of the stator by a rotor shaft (7), characterized in that: the rotor is cylindrical, and is coaxially and rotatably matched with the stator in the inner cavity of the stator, a groove (9) is formed in the wall of the cylindrical inner cavity of the stator rotatably matched with the rotor along the circumferential direction, so that a closed working cavity (12) is formed between the stator and the rotor, the inner contour line of the cross section of the working cavity is a circle taking the axis of the rotor as the center of the circle, the radius of the rotor is a radius, and the outer contour line of the cross section of the working cavity is a closed line formed by connecting a first arc line (17), a second arc line (20), a first curve (16), a second curve (21), a third curve (19) and a fourth curve (18); two chamber grooves (13) have been seted up along the axial on the rotor face of cylinder, two chamber grooves are each other 180 degrees in rotor circumference, the contour line of chamber groove cross section is the circular arc line, the both ends face of chamber groove respectively with the both sides face of recess flushes, be provided with planet roller (8) in the chamber groove, the planet roller passes through roller (2) rotatably to be supported at the both ends of rotor, and planet roller and chamber groove coaxial line, the contour line of planet roller cross section is by third circular arc line (22), fourth circular arc line (24), the closed line that fifth curve (23) and sixth curve (25) are connected and are formed, become centrosymmetric figure about planet roller cross section central point, in the plane rectangular coordinate system who uses this central point as the original point, the equation of fifth curve is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b；

the equation for the first curve is:

The equation for the second curve is:

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)；

the planetary rollers are in running fit with the cavity grooves in the cavity grooves, two end faces of the planetary rollers are attached to two end faces of the cavity grooves and two side faces of the grooves, and air guide grooves (26) are transversely formed in the curved surfaces of the planetary rollers corresponding to the fifth curves (23);

a fluid inlet (11) and a fluid outlet (10) which are communicated with the working cavity are formed in the stator, and a through hole of the fluid inlet in the inner wall of the stator is formed in one side of a curved surface of the inner wall of the stator, corresponding to a third curve near a crest line of the inner wall of the stator, corresponding to a connection point of a third curve (19) and a fourth curve (18); a through hole of the fluid outlet on the inner wall of the stator is positioned on one side of the curved surface of the inner wall of the stator corresponding to a fourth curve near the crest line of the inner wall of the stator corresponding to the connection point of the third curve and the fourth curve;

and an oil nozzle (14) is arranged on the stator, and when the two planetary rollers are positioned on the ordinate axis of a plane rectangular coordinate system taking the central point of the cross section of the rotor as the origin, a space formed between the curved surface of the planetary roller corresponding to the fifth curve (23) and the curved surface of the inner wall of the stator corresponding to the first curve and the second curve is communicated with the oil nozzle.

8. The rotary engine as recited in claim 7, wherein: the planetary roller synchronous control mechanism comprises a synchronous gear (5), a central gear (3) and a synchronous toothed belt (4), the synchronous gear is fixed at one end of the roller shaft (2), the central gear is fixed on the stator (1) and coaxial with the rotor (6), and the central gear is in transmission connection with the synchronous gear through the synchronous toothed belt.

9. The rotary engine as recited in claim 7, wherein: and a through hole of the fluid inlet (11) on the inner wall of the stator (1) is positioned on the curved surface of the inner wall of the stator corresponding to the third curve (19), and a through hole of the fluid outlet (10) on the inner wall of the stator is positioned on the curved surface of the inner wall of the stator corresponding to the fourth curve (18).

10. The rotary engine as recited in claim 7, wherein: the oil spray nozzle (14) is positioned at a stator part corresponding to the curved surface of the inner wall of the stator corresponding to the first curve (16) or/and the second curve (21).

11. A rotary engine comprising a stator (1) and a rotor (6) located in the stator cavity, the rotor being rotatably supported at both ends of the stator by a rotor shaft (7), characterized in that: the rotor is cylindrical, and is coaxially and rotatably matched with the stator in the inner cavity of the stator, a groove (9) is formed in the wall of the cylindrical inner cavity of the stator rotatably matched with the rotor along the circumferential direction, so that a closed working cavity (12) is formed between the stator and the rotor, the inner contour line of the cross section of the working cavity is a circle taking the axis of the rotor as the center of the circle, the radius of the rotor is a radius, and the outer contour line of the cross section of the working cavity is a closed line formed by connecting a first arc line (17), a second arc line (20), a first curve (16), a second curve (21), a third curve (19) and a fourth curve (18); two chamber grooves (13) have been seted up along the axial on the rotor face of cylinder, two chamber grooves are each other 180 degrees in rotor circumference, the contour line of chamber groove cross section is the circular arc line, the both ends face of chamber groove respectively with the both sides face of recess flushes, be provided with planet roller (8) in the chamber groove, the planet roller passes through roller (2) rotatably to be supported at the both ends of rotor, and planet roller and chamber groove coaxial line, the contour line of planet roller cross section is by third circular arc line (22), fourth circular arc line (24), the closed line that fifth curve (23) and sixth curve (25) are connected and are formed, become centrosymmetric figure about planet roller cross section central point, in the plane rectangular coordinate system who uses this central point as the original point, the equation of fifth curve is:

x²+( R₂-y)²- R₁ ²=0, wherein: a ≦ x ≦ a, (R)₂- R₁）≤y≤b；

the equation for the first curve is:

The equation for the second curve is:

b=( R₂ ²-2·R₁·R₃+R₃ ²)/(2·R₂)；

the planetary roller is in running fit with the cavity groove in the cavity groove, two end faces of the planetary roller are attached to two end faces of the cavity groove and two side faces of the groove, and a gas guide groove (26) is transversely formed in a curved surface where the fifth curve (23) of the planetary roller is located;

and an oil nozzle (14) and a spark plug (15) are arranged on the stator, and when the two planetary rollers are positioned on the ordinate axis of a plane rectangular coordinate system taking the central point of the cross section of the rotor as the origin, a space formed between the curved surface of the planetary roller corresponding to the fifth curve (23) and the curved surfaces of the stator corresponding to the first curve and the second curve is communicated with the oil nozzle and the spark plug.

12. The rotary engine as recited in claim 11, wherein: the planetary roller synchronous control mechanism comprises a synchronous gear (5), a central gear (3) and a synchronous toothed belt (4), the synchronous gear is fixed at one end of the roller shaft (2), the central gear is fixed on the stator (1) and coaxial with the rotor (6), and the central gear is in transmission connection with the synchronous gear through the synchronous toothed belt.

13. The rotary engine as recited in claim 11, wherein: and a through hole of the fluid inlet (11) on the inner wall of the stator (1) is positioned on the curved surface of the inner wall of the stator corresponding to the third curve (19), and a through hole of the fluid outlet (10) on the inner wall of the stator is positioned on the curved surface of the inner wall of the stator corresponding to the fourth curve (18).

14. The rotary engine as recited in claim 11, wherein: the oil spray nozzle (14) and the spark plug (15) are positioned at the stator part corresponding to the curved surface of the inner wall of the stator corresponding to the first curve (16) or/and the second curve (21).