CN221664920U - Multistage spherical compressor - Google Patents

Abstract

The patent discloses a multistage spherical compressor, wherein a cylinder body and a cylinder cover form a spherical inner cavity, a rotating sleeve hole is formed in the inner spherical surface of the cylinder cover, and a rotating disc shaft hole is formed below the cylinder body; the spherical top surface of the piston is provided with a sliding shoe, and a sector groove is arranged below the piston pin seat; a rotary disc shaft is arranged at the lower part of the spherical surface of the rotary disc, and a fan-shaped protruding block matched with the fan-shaped groove is arranged above the pin seat of the rotary disc; the piston and the rotary disc are arranged in the spherical inner cavity; the sliding shoe rotating sleeve is arranged in the rotating sleeve hole, the sliding shoe is arranged in a sliding groove below the end surface of the sliding shoe rotating sleeve, and the rotating disc shaft extends out of the cylinder body from the rotating disc shaft hole; the lower end of the cylinder body is provided with a rolling rotor compression part; driving the turntable shaft to rotate, forming first-stage compression at the rolling rotor compression part, and forming second-stage compression and third-stage compression or expansion in the spherical inner cavity; the advantages are that: the motion dead point problem of the multistage spherical compressor is thoroughly solved from the motion mechanism; the structure is light and handy, has reduced multistage compressor's volume.

Description

Multistage spherical compressor

Technical Field

The invention relates to a compressor, in particular to a multistage spherical compressor.

Background

The spherical compressor is a volume-changing mechanism with a brand new structure in recent years, can be used in different application fields like a piston compressor, a rolling rotor compressor, a scroll compressor and a screw compressor, and plays respective advantages. The spherical compressor has the unique advantages of simple structure, fewer moving parts, no air inlet and outlet valves, reliable sealing, realization of high pressure, easy miniaturization design and the like, and particularly, a plurality of working chambers can be formed in one spherical cylinder body to realize multistage compression, such as the multistage spherical compressor disclosed in China patent No. 200610104569.8 and the patent name of the spherical compressor capable of realizing multistage compression, namely, the multistage spherical compressor gradually improves the working medium pressure through multistage compression.

However, because the piston of the spherical compressor rotates and is powered by the main shaft with eccentric shaft hole, when the main shaft rotates to the moment that the axis of the turntable is coincident with the axis of the piston, the resultant force of the main shaft acting on the turntable is perpendicular to the axes of the piston and the turntable, the resultant force of the main shaft acting on the turntable generates no torque component for driving the piston and the turntable to rotate around the axes respectively, and the turntable and the piston cannot rotate, the spherical compressor mechanism with the structure is a dead point of movement, and the rotor can normally operate only through the movement inertia of the mechanism at the dead point position; when the motion state is the initial state and stops rotating at the dead point position or just at the dead point state, the next time can not be started. In the technical scheme of the patent, permanent magnets are respectively arranged on the rotating surfaces of the main shaft, which are in contact with the cylinder body, the opposite surfaces of the two permanent magnets have the same polarity, the main shaft is pushed away to form a certain angle with the dead point position by using repulsive force with the same polarity, and the dead point position is prevented from being stopped, but the method has poor universality and reliability, the structure with larger structure size, good lubrication and smaller friction force can overcome the friction force by moving inertia to enable the rotor to pass through the dead point position, and for the structure with smaller structure size and poorer lubrication condition, the dead point position is still easy to be blocked and stopped due to small inertia and larger friction force.

In the subsequent application and development of the patent technology with the patent number of 200610104569.8, new technology development and innovative design are continuously carried out, and the technology of passing dead points of the spherical compressor is improved, for example, the patent numbers of 2013101006975 are respectively referred to as a rotary table rotation synchronous mechanism for the spherical compressor, 201410100390X are referred to as a rotary table anti-locking mechanism for the spherical compressor rotor and 2014105548366 are referred to as a rotary table anti-locking power mechanism for the spherical compressor, wherein the patent number of 2013101006975 is a rotary table synchronous mechanism formed by arranging an elastic steel ball and a concave slideway between the inner spherical surface of a cylinder body and the spherical surface of the rotary table, and the rotor passes dead points through the instant rotation torque of the elastic steel ball, but the concave slideway occupies a sealing surface to reduce the sealing performance, and meanwhile, the track curve of the concave slideway is complex and the processing is difficult; the patent number 201410100390X is that a concave slideway is arranged on the inner spherical surface of a cylinder body or the inner spherical surface of a cylinder body seat, a guide pin is arranged on a rotor, and the rotation torque of the rotor is provided at a dead point through the guide pin, so that the problem of sealing loss is solved, but the concave slideway is difficult to process, a structural member is added, and the structure is complex. The patent number 2014105548366 is that a track limiting surface is arranged on a cylinder seat or a cylinder, a power handle is arranged on a rotor, and the torque for rotor rotation is generated by matching the power handle with the track limiting surface, but the processing point of the track limiting surface is complex, the number of parts is increased, the number of vulnerable parts is large, and the structure is complex.

Meanwhile, because the spherical compressor is a compressor with a constant volume ratio, the technical scheme of the patent No. 200610104569.8 can not realize variable working conditions and can not work efficiently when the working conditions change.

Disclosure of Invention

The invention aims to design a multistage spherical compressor, radically eliminate dead points in the running process of a rotor by redesigning the structure of the spherical compressor, improve the reliability of the multistage spherical compressor, and design and layout the compression of each stage, so that the multistage spherical compressor is suitable for running under variable working conditions.

The technical scheme of this patent is: a multistage spherical compressor comprises a cylinder cover, a cylinder body, a piston, a turntable, a sliding shoe rotating sleeve, a side support and a sector sliding block; the cylinder body and the cylinder cover are respectively provided with a hemispherical inner cavity, the hemispherical inner cavities are combined after being fixedly connected, a rotating sleeve hole is formed in the inner spherical surface of the cylinder cover, and a rotating disc shaft hole communicated with the outside of the cylinder is formed below the cylinder body; the piston is provided with a spherical top surface, a sliding shoe is protruded in the center of the spherical top surface, a piston pin seat is arranged at the lower end of the piston, and a fan-shaped groove is arranged in the center below the piston pin seat; the rotary table is provided with a rotary table spherical surface, a rotary table shaft is protruded in the center of the lower part of the rotary table spherical surface, a rotary table pin seat matched with the piston pin seat is arranged at the upper end of the rotary table spherical surface, and a fan-shaped protruding block matched with the fan-shaped groove is arranged in the center above the rotary table pin seat; the piston pin seat and the turntable pin seat form a cylindrical surface hinge through a center pin, and two ends of the cylindrical surface hinge are respectively inwards recessed to form a cylindrical groove; one end of the side support is a flat end surface, a central shaft hole is arranged in the center of the flat end surface, and the other end of the side support is a spherical surface matched with the spherical surfaces of the piston and the turntable; the two side supports are respectively arranged in the cylindrical grooves at the two ends of the cylindrical hinge, the outer circle of the side support is matched with the inner holes of the cylindrical grooves at the two ends of the cylindrical hinge and is fixedly connected at the two ends of the piston pin seat through positioning screws, and the two ends of the center pin extend out of the turntable pin seat and are respectively inserted into the center shaft holes of the side supports at the two sides; a sector slide rail penetrating along the axis direction of the cylindrical surface hinge is arranged on the turntable body, the shape of the sector slide block is matched with that of the sector slide rail, the upper arc surface and the lower arc surface of the sector slide block are jointed with the upper arc surface and the lower arc surface of the sector slide rail to form sealed movable fit, and the two end surfaces of the sector slide block are jointed with the flat end surfaces supported at the two end sides and fixedly connected through positioning screws;

The central axis of the cylindrical surface hinge is coincident with the circular arc central axes of the sector grooves and the sector slide ways and passes through the spherical center of the spherical inner cavity, the central axis of the sliding shoe is the axis passing through the center of the spherical top surface of the piston and passing through the spherical center of the spherical inner cavity, and the two parallel surfaces of the sliding shoe are symmetrically arranged on the two sides of the central axis of the sliding shoe and are parallel to the central axis of the cylindrical surface hinge; the axis of the turntable shaft forms an included angle with the axis of the sleeve hole and the central axis of the sliding shoe respectively, and the axis of the turntable shaft and the axis of the sleeve hole pass through the sphere center of the spherical inner cavity;

The piston and the turntable are arranged in the spherical inner cavity, and the spherical surface of the piston, the spherical surface of the turntable and the spherical surface of the outer side of the side support respectively form sealing movable fit with the spherical inner cavity; the sliding shoe rotating sleeve is arranged in the rotating sleeve hole, the sliding shoe is arranged in a sliding groove below the end face of the sliding shoe rotating sleeve, and the rotary disc shaft extends out of the cylinder body from the rotary disc shaft hole; when the turntable shaft is driven to rotate, a second chamber A and a second chamber B with alternately changed volumes are formed among the two side surfaces of the sector slide way of the turntable, the two side surfaces of the sector sliding block and the flat end surfaces of the two side supports, and a third chamber A and a third chamber B with alternately changed volumes are formed among the two side surfaces of the sector groove in the center of the lower end of the piston pin seat, the two side surfaces of the sector convex block in the center of the upper end of the turntable pin seat and the flat end surfaces of the two side supports; a fourth chamber A and a fourth chamber B with alternately changed volumes are formed among the lower end surface of the piston pin seat, the upper end surface of the turntable pin seat and the flat end surfaces of the two side supports;

Further, an eccentric wheel is arranged on a rotary disc shaft extending out of the cylinder body, a circular rolling rotor cylinder body is arranged on the lower end surface of the cylinder body, and the rotary disc shaft drives the eccentric wheel to rotate in the rolling rotor cylinder body to form a rolling rotor compression part; when the turntable shaft is driven to rotate, a first chamber A and a first chamber B with alternately changed volumes are formed in the rolling rotor compression part;

Further, a through hole is arranged on the turntable pin seat, and two ends of the through hole are respectively communicated with the fourth chamber A and the fourth chamber B; the rolling rotor compression part is used for first-stage compression, the second chamber A and the second chamber B are used for second-stage compression, and the third chamber A and the third chamber B are used for third-stage compression or expansion to form a three-stage compression or two-stage compression one-stage expansion compressor;

Further, a through hole is arranged on the turntable pin seat, and two ends of the through hole are respectively communicated with the fourth chamber A and the fourth chamber B; the circulating working medium of the multistage compressor adopts carbon dioxide, the rolling rotor compression part is used for first-stage compression, the second chamber A and the second chamber B are used for second-stage compression, and the third chamber A and the third chamber B are used for expansion stages, so that the carbon dioxide spherical expansion compressor is formed;

Further, the rolling rotor compression part is used as a first-stage compression, the second chamber A and the second chamber B are used as a second-stage compression, the third chamber A and the third chamber B are used as a third-stage compression or expansion, and the fourth chamber A and the fourth chamber B are used as a fourth-stage compression to form a one-stage expansion compressor for forming the four-stage compression or the three-stage compression;

Further, the upper end face of the rolling rotor cylinder body is attached to the lower end face of the cylinder body and is fixedly connected, an end cover is arranged on the lower end face of the rolling rotor cylinder body, an eccentric wheel connected to a turntable shaft is arranged in the end cover and a cylindrical inner cavity of the rolling rotor cylinder body, a valve plate is elastically arranged between an outer circular arc of the eccentric wheel and an inner circular arc of the rolling rotor cylinder body, so that a first chamber A and a first chamber B are formed, the eccentric wheel rotates along with the turntable shaft, and the volumes of the first chamber A and the first chamber B are alternately changed; the rolling rotor cylinder body is respectively provided with a first air inlet and a first air outlet which are communicated with the outside of the cylinder, the first air inlet is communicated with the first chamber A to form an air suction working chamber of the rolling rotor compression part, and the first air outlet is communicated with the first chamber B to form an air discharge working chamber of the rolling rotor compression part; an air inlet valve is arranged on the first air inlet hole, and an air outlet valve is arranged on the first air outlet hole;

Further, a semi-cylindrical hole with a downward opening is arranged on the lower end surface of the piston pin seat, the sector-shaped groove is recessed in the center of the inner circumference of the semi-cylindrical hole and penetrates through the lower end surface of the piston pin seat along the axial direction of the semi-cylindrical hole, and the lower end surface of the piston pin seat is in a sector shape on a section perpendicular to the axial direction of the semi-cylindrical hole; a raised semi-circular ring body is arranged at the upper part of the turntable pin seat, a central hole of the semi-circular ring body is used as a central hole of the piston pin seat, a central pin is inserted into the central hole and used as a rotating shaft of the cylindrical surface hinge, the axis of the semi-circular ring body is overlapped with the axis of the semi-cylindrical hole of the piston pin seat, and the outer circumference of the semi-circular ring body is attached to the inner circumference of the semi-cylindrical hole; the fan-shaped protruding block protrudes out of the center of the outer circumference of the semicircular ring body and penetrates through the semicircular ring body along the axial direction of the semicircular ring body, and is fan-shaped on a section perpendicular to the axial direction of the semicircular ring body;

further, a second air inlet hole and a second air outlet hole are formed in the cylinder body, a second air inlet channel and a second air outlet channel are formed in the inner spherical surface of the cylinder body, one end of the second air inlet hole is communicated with the second air inlet channel, and the other end of the second air inlet hole is communicated to the outside of the cylinder body; one end of the second exhaust hole is communicated with the second row of channels, and the other end of the second exhaust hole is communicated with the outside of the cylinder body; the two sides of the fan-shaped slideway of the turntable are respectively provided with a turntable air passage, one end of one turntable air passage is communicated with the second chamber A, one end of the other turntable air passage is communicated with the second chamber B, the other ends of the two turntable air passages are respectively arranged on the spherical surface of the turntable, when the turntable shaft rotates, the volumes of the second chamber A and the second chamber B are alternately changed, and when the volume is increased, the chamber needing to be inhaled is communicated with the second air inlet passage through the turntable air passage communicated with the chamber needing to be inhaled, and the air is inhaled through the second air inlet hole; when the volume is reduced and the exhaust is needed, the cavity needing to be exhausted is communicated with the second exhaust channel through a turntable air passage communicated with the cavity, and high-pressure gas is exhausted through a second exhaust hole;

Further, two piston air passages are arranged on the piston, one end of one piston air passage is communicated with the third chamber A, one end of the other piston air passage is communicated with the third chamber B, the other ends of the two piston air passages are arranged on the spherical surface of the piston, a third air inlet passage and a third air outlet passage are arranged on the spherical surface in the cylinder cover, a third air inlet hole and a third air outlet hole are arranged on the cylinder cover, one end of the third air inlet hole is communicated with the third air inlet passage, the other end of the third air inlet hole is communicated with the outside of the cylinder cover, one end of the third air outlet hole is communicated with the third air outlet passage, and the other end of the third air outlet hole is communicated with the outside of the cylinder cover; when the rotary table shaft rotates, the volumes of the third chamber A and the third chamber B are alternately changed, when the volume is increased and air needs to be sucked, the chamber which is required to be sucked is communicated with the third air inlet channel through a piston air channel communicated with the chamber, air is sucked through the third air inlet hole, and when the volume is reduced and air needs to be discharged, the chamber which is required to be discharged is communicated with the third air outlet channel through a piston air channel communicated with the chamber and the third air outlet hole.

The advantage of this patent is:

1) The motion dead point problem of the spherical multistage compressor is thoroughly solved from the motion mechanism: the spherical compressor is characterized in that a sliding shoe is arranged at the end part of a piston shaft, the sliding shoe is rotationally sleeved in a sleeve hole on the inner spherical surface of a cylinder cover, the sliding shoe is rotationally reciprocated in a sliding groove in the sleeve of the sliding shoe, a turntable shaft is used as a driving shaft to directly drive a turntable to rotate, and the turntable drives the piston to rotate (at the moment, the piston rotates around the axis of the sleeve hole and the sliding shoe is rotationally reciprocated in the sliding groove of the sleeve of the sliding shoe), and meanwhile, the piston and the turntable relatively swing, so that the spherical compressor is a dead-point-free mechanism.

2) The structure is light and handy, has simplified the structure of multistage compressor, has reduced multistage compressor's volume: a plurality of groups of compressible working chambers are integrated in one spherical cavity to form multi-stage compression, and meanwhile, a rolling rotor compression part is arranged at the lower part of the turntable shaft, so that the integrated level is high and the structure is unique.

3) The variable working condition operation can be realized: the rolling rotor type compression part can operate as a variable working condition, so as to prepare compression working media for each stage of compression of the spherical compressor, and realize efficient operation of multistage compression.

4) The spherical expansion compressor can be used for compression refrigeration of carbon dioxide, a pair of working chambers (a third chamber A and a third chamber B) formed between a piston pin seat and a turntable pin seat are used as expansion working chambers, compression and expansion mechanical movement interact, when the compression working chambers perform compression stroke, the expansion working chambers expand by utilizing the movement trend of the compression-stage working chambers, so that compression and expansion are assisted with each other, the expansion machine does little work, the efficiency is high, and the energy conservation and emission reduction are realized.

Drawings

Fig. 1: the front view of the multistage spherical compressor is disclosed;

Fig. 2: the multistage spherical compressor is a bottom view;

fig. 3: FIG. 2 is a sectional view B-B;

Fig. 4: A-A in FIG. 1;

fig. 5: a cylinder cover three-dimensional structure schematic diagram;

Fig. 6: a schematic diagram of a cylinder body three-dimensional structure;

fig. 7: schematic side support three-dimensional structure;

fig. 8: a three-dimensional structure schematic diagram of a sliding shoe rotating sleeve;

fig. 9: a schematic diagram of a piston three-dimensional structure;

Fig. 10: a schematic diagram of a three-dimensional structure of the turntable;

Fig. 11: schematic diagram of a three-dimensional structure of a rolling rotor cylinder body;

Fig. 12: a three-dimensional structure schematic diagram of the rotor assembly;

fig. 13: explosion diagram of the rotor assembly;

In the figure:

1-a cylinder cover; 11-a third air inlet; 12-a third vent; 13-a third air intake passage; 14-a third exhaust passage; 15-a swivel hole;

2-a piston; 21-piston air passages; 22-skid shoes; 23-sector grooves;

3-a turntable; 31-a turntable air passage; 32-through holes; 33-sector-shaped bumps; 34-a central hole; 35-sector sliding grooves; 36-a turntable shaft;

4-cylinder; 41-a second air inlet hole; 42-a second vent; 43-a second intake passage; 44-a second exhaust passage; 45-a turntable shaft hole;

5-side support; 50-positioning screws; 51-a central shaft hole;

6-a sector slide block;

7-a rolling rotor cylinder; 701-a compression spring; 702-valve plate; 703-bond; 704-eccentric wheel; 705-a first inlet aperture; 706—a first vent; 707—a cylindrical lumen; 708-a valve seat groove;

8-end caps;

9-a center pin;

10-sliding shoe rotating sleeve;

101-a third chamber a; 102-a third chamber B; 103-fourth chamber a; 104-a fourth chamber B; 105-a second chamber a; 106-a second chamber B; 107-a first chamber a; 108-first chamber B.

Detailed Description

The present patent is described in detail below with reference to the drawings and detailed description.

As shown in fig. 1-6, the multistage spherical compressor of the present patent comprises a cylinder cover 1, a piston 2, a turntable 3, a cylinder body 4, two side supports 5, a sector sliding block 6, a rolling rotor cylinder body 7, an end cover 8, a center pin 9 and a sliding shoe rotating sleeve 10, wherein the cylinder body 4 and the cylinder cover 3 are provided with hemispherical inner cavities, and form a spherical inner cavity after being fixedly connected through screws, a rotating sleeve hole 15 is formed in the inner spherical surface of the cylinder cover 1, and a turntable shaft hole 45 communicated with the outside of the cylinder is formed in the lower end of the cylinder body 4. The piston 2 and the turntable 3 are connected by a cylindrical hinge formed by a center pin 9 and two side supports 5, and the center line of the cylindrical hinge passes through the center of sphere of the spherical inner cavity.

As shown in fig. 9, the piston 2 has a spherical top surface, a sliding shoe 22 is protruded in the center of the spherical top surface, the central axis of the sliding shoe 22 is the axis passing through the center of the spherical top surface of the piston 2 and the spherical center of the spherical cavity, and two parallel surfaces of the sliding shoe 22 are symmetrically arranged on two sides of the central axis of the sliding shoe 22 and are parallel to the central line of the cylindrical hinge; a piston pin boss is provided at the lower end of the piston 2, a semi-cylindrical hole with a downward opening is provided at the lower end surface of the piston pin boss, a fan-shaped groove 23 penetrating in the axial direction of the semi-cylindrical hole is provided at the center of the inner circumference of the semi-cylindrical hole, and the fan-shaped groove 23 is fan-shaped in a section perpendicular to the axial direction of the semi-cylindrical hole.

As shown in fig. 10, the turntable 3 has a turntable spherical surface, a turntable shaft 36 is protruded from the center of the lower part of the turntable spherical surface, a turntable pin seat matched with the piston pin seat is provided at the upper end of the turntable spherical surface, a raised semicircular ring body is provided at the upper part of the turntable pin seat, the central hole of the semicircular ring body is used as the central hole 34 of the turntable pin seat, the central hole 34 coincides with the axis of the semicircular cylinder hole of the piston pin seat, and the outer circumference of the semicircular ring body is jointed with the inner circumference of the semicircular cylinder hole of the piston pin seat; a sector-shaped lug 33 matched with the sector-shaped groove 23 is arranged in the center above the outer circumference of the semicircular ring of the turntable pin seat; the fan-shaped protruding block 33 protrudes from the center of the outer circumference of the semicircular body of the turntable pin seat and penetrates through the semicircular body along the axial direction of the semicircular body, and is fan-shaped on a section perpendicular to the axial direction of the semicircular body.

The semi-cylindrical hole of the piston pin seat is matched with the semi-circular ring of the turntable pin seat, the fan-shaped groove 23 of the piston pin seat is matched with the fan-shaped convex block 33 of the turntable pin seat, the center pin 9 is inserted into the center hole 34 and matched with the two side supports 5, so that the piston pin seat and the turntable pin seat are combined into a cylindrical surface hinge connection, the piston 2 can swing around the center pin 9 relative to the turntable 3, and a sealing movable fit is formed between the inner circumference of the semi-cylindrical hole and the outer circumference of the semi-circular ring body and between the inner circumference of the fan-shaped groove 23 and the outer circumference of the fan-shaped convex block 33.

Cylindrical grooves are formed at the two ends of the cylindrical surface hinge, and are formed by inwards recessing the two ends of the piston pin seat and the turntable pin seat; as shown in fig. 7, one end of the side support 5 is a flat end surface, a central shaft hole 51 is arranged in the center of the flat end surface, and the other end is a spherical surface matched with the spherical surfaces of the piston 2 and the rotary table 4; three screw connecting through holes are formed in the side support 5, the screw through holes are step holes, the aperture of one side close to the flat end face is matched with the positioning rod of the positioning screw 50 and used for positioning the positioning screw, the aperture of one side close to the spherical surface is matched with the size of the head of the positioning screw 50 and used for sinking into the head of the screw, the head of the used positioning screw adopts the spherical surface, and after the screw is installed, the spherical surface of the head of the screw is matched with the spherical surface of the side support 5 and does not protrude out of the spherical surface of the side support 5; the two side supports 5 are respectively arranged in the cylindrical grooves at the two ends of the cylindrical hinge, the outer circle shape of each side support 5 is matched with the cylindrical grooves at the two ends of the cylindrical hinge, two threaded holes are formed in the bottom surface of the cylindrical groove formed at the end part of the piston pin seat, and each side support 5 is fixedly connected to the bottom surface of the concave groove at the two ends of the piston pin seat through two positioning screws 50; the two ends of the center pin 9 extend out of the turntable pin seat and are respectively inserted into the center shaft holes 51 of the side supports 5 at the two sides to form a rotary support for the center pin 9; the side supports 5 on both sides are fixedly connected with the piston 2 and can swing reciprocally along with the piston 2 around the center pin 9 relative to the turntable 3.

The rotary table pin seat is provided with a fan-shaped slide rail 35 which is communicated along the axis direction of the central hole 34, the shape of the fan-shaped slide block 6 is matched with the shape of the fan-shaped slide rail 35, the upper arc surface and the lower arc surface of the fan-shaped slide block 6 are jointed with the upper arc surface and the lower arc surface of the fan-shaped slide rail 35 to form sealing movable fit, the two end surfaces of the fan-shaped slide block 6 are jointed with the flat end surfaces of the two end side supports 5, the two end surfaces of the fan-shaped slide block 6 are provided with threaded holes, and a positioning screw 50 penetrates through screw through holes on the side supports 5 to fixedly connect the fan-shaped slide block 6 on the side supports 5 on the two sides. When the piston 2 swings reciprocally about the center pin 9 with respect to the turntable 4, the sector slide 6 swings reciprocally in the sector slide 35.

In the above structure, the central axis of the cylindrical hinge coincides with the central axes of the circular arcs of the sector grooves 23, the sector protrusions 33, the sector sliding blocks 6 and the sector sliding ways 35 and passes through the sphere center of the spherical cavity, the axis of the turntable shaft 36 forms an included angle α with the axis of the turntable hole 15 and the central axis of the sliding shoe 22, the value of the included angle α is 5-15 degrees, and the axis of the turntable shaft 36 and the axis of the turntable hole 15 pass through the sphere center of the spherical cavity.

The lower end face of the cylinder body 4 is sequentially connected with a rolling rotor cylinder body 7 and an end cover 8 through screws, as shown in fig. 1, 3, 4 and 11, the rolling rotor cylinder body 7 is in a circular ring shape, the end cover 8 is attached to the lower end face of the rolling rotor cylinder body 7 to form a cylindrical inner cavity 707, after the turntable shaft 36 stretches out from the turntable shaft hole 45 of the cylinder body 4, an eccentric wheel 704 is fixedly connected to a shaft neck of the turntable shaft 36 stretching out of the turntable shaft hole 45 through a key 703, the eccentric wheel 704 is arranged in the cylindrical inner cavity 707, a valve seat groove 708 is further formed in the rolling rotor cylinder body 7, a valve plate 702 and a pressure spring 701 are arranged in the valve seat groove, and the valve plate 702 is elastically pressed between an outer circular arc of the eccentric wheel and an inner circular arc of the rolling rotor cylinder body 7 through the spring, so that a first chamber A107 and a first chamber B108 are formed; a through hole of the turntable shaft 36 is arranged in the center of the end cover 8, and forms a rotary support of the turntable shaft 36 together with a turntable shaft hole 45 on the cylinder body 4. Eccentric 704 rotates with turntable shaft 36, and the volumes of first chamber a107 and first chamber B108 alternate, thereby forming a rolling rotor compression section; the rolling rotor cylinder 7 is respectively provided with a first air inlet hole 705 and a first air outlet hole 706 which are communicated with the outside of the cylinder, the first air inlet hole 705 is communicated with the first chamber A107 to form an air suction working chamber of the rolling rotor compression part, and the first air outlet hole 706 is communicated with the first chamber B108 to form an air discharge working chamber of the rolling rotor compression part; an intake valve is provided on the first intake port 705, and an exhaust valve is provided on the first exhaust port 706; the rolling rotor compression part is variable compression, and can adjust the operation parameters of the compressor according to the operation working condition of the compressor, so as to realize the operation under variable working conditions and exert the maximum efficiency of the compressor.

As shown in fig. 1 and 3, a cylinder cover 1, a cylinder body 4, a rolling rotor cylinder body 7 and an end cover 8 are sequentially and fixedly connected and combined to form the multistage spherical compressor stator; as shown in fig. 12 and 13, the piston 2, the rotary table 3, the two side supports 5, the center pin 9, the eccentric 704 and the shoe rotor 10 are combined into a rotor of the multi-stage spherical compressor described in the patent; the piston 2 and the turntable 3 are connected with two side supports 5 through a center pin 9 to form a cylindrical surface hinge, and are arranged in a spherical inner cavity formed by a cylinder body 4 in the stator and a cylinder cover 1, and a turntable shaft 36 of the turntable 3 extends out of the cylinder body 4 from a turntable shaft hole 45 below the cylinder body 4; as shown in fig. 8, the sliding shoe rotating sleeve 10 is a cylinder with a sliding groove on the lower end surface, the external dimension of the sliding shoe rotating sleeve 10 is matched with the dimension of the rotating sleeve hole 15 on the inner spherical surface of the cylinder cover 1, the sliding shoe rotating sleeve 10 is arranged in the rotating sleeve hole 15 and can rotate around the axis of the rotating sleeve hole 15, the opening of the sliding groove faces downwards, the dimension of the sliding groove is matched with the sliding shoe 22 on the central protrusion of the spherical surface of the piston 2, and the sliding shoe 22 can slide reciprocally in the sliding groove.

When the rotary table shaft 36 is driven to rotate, a first chamber A107 and a first chamber B108 with alternately changed volumes are formed in the rolling rotor compression part, a second chamber A105 and a second chamber B106 with alternately changed volumes are formed between the two side surfaces of the fan-shaped slideway 35 of the rotary table pin seat of the rotary table 3, the two side surfaces of the fan-shaped sliding block 6 and the flat end surfaces of the two side supports, and a third chamber A101 and a third chamber B102 with alternately changed volumes are formed between the two side surfaces of the fan-shaped groove 23 in the center of the lower end of the piston pin seat of the piston 2, the two side surfaces of the fan-shaped convex block 33 in the center of the upper end of the rotary table pin seat of the rotary table 3 and the flat end surfaces of the two side supports 5; fourth chambers a103 and B104 having alternating volumes are formed between the lower end surface of the piston pin boss of the piston 2, the upper end surface of the turntable pin boss of the turntable 3, and the flat end surfaces of the two side supports.

A second air inlet hole 41 and a second air outlet hole 42 are arranged on the cylinder body 4, a second air inlet channel 43 and a second air outlet channel 44 are arranged on the inner spherical surface of the cylinder body 4, and the second air inlet channel 43 and the second air outlet channel 44 are circular arc grooves distributed on the circumference taking the axis of the turntable shaft hole 45 as the center; one end of the second air inlet hole 41 is communicated with the second air inlet channel 43, and the other end of the second air inlet hole is communicated with the outside of the cylinder body 4; one end of the second exhaust hole 42 is communicated with the second row channel 44, and the other end is communicated with the outside of the cylinder body 4; the two sides of the fan-shaped slide way 35 of the turntable 3 are respectively provided with a turntable air passage 31, one end of one turntable air passage 31 is communicated with the second chamber A105, one end of the other turntable air passage 31 is communicated with the second chamber B106, the other ends of the two turntable air passages 31 are respectively arranged on the spherical surface of the turntable 3, when the turntable shaft 36 rotates, the volumes of the second chamber A105 and the second chamber B106 are alternately changed, and when the volume becomes larger, the chamber needing to be sucked is communicated with the second air inlet channel 43 through the turntable air passage 31 communicated with the chamber needing to be sucked, and the gas is sucked through the second air inlet hole 41; when the volume becomes smaller and exhaustion is required, the chamber requiring exhaustion is communicated with the second exhaust passage 44 through the turntable air passage 31 communicated therewith, and high-pressure gas is exhausted through the second exhaust hole 42.

Two piston air passages 21 are arranged on the piston 2, one end of one piston air passage 21 is communicated with the third chamber A101, one end of the other piston air passage 21 is communicated with the third chamber B102, the other ends of the two piston air passages 21 are arranged on the spherical surface of the piston, a third air inlet passage 13 and a third air outlet passage 14 are arranged on the inner spherical surface of the cylinder cover 1, and the third air inlet passage 13 and the third air outlet passage 14 are circular arc grooves distributed on the circumference taking the axis of the sleeve hole 15 as the center; a third air inlet hole 11 and a third air outlet hole 12 are arranged on the cylinder cover 1, one end of the third air inlet hole 11 is communicated with the third air inlet channel 13, the other end of the third air inlet hole is communicated with the outside of the cylinder cover 1, one end of the third air outlet hole 12 is communicated with the third air outlet channel 14, and the other end of the third air outlet hole is communicated with the outside of the cylinder cover 1; when the dial shaft 36 rotates, the volumes of the third chamber a101 and the third chamber B102 are alternately changed, and when the volume becomes large and air needs to be sucked, the chamber requiring air suction is communicated with the third air inlet channel 13 through the piston air channel 21 communicated with the chamber requiring air suction and sucks air through the third air inlet hole 11, and when the volume becomes small and air needs to be discharged, the chamber requiring air discharge is communicated with the third air outlet channel 14 through the piston air channel 21 communicated with the chamber requiring air discharge and discharges air through the third air outlet hole 12.

In order to prevent the fourth chamber a103 and the fourth chamber B104 from compressing, do no work on the gas, and reduce power consumption, a through hole 32 is provided in the turntable pin seat of the turntable 3, and two ends of the through hole 32 are respectively connected to the fourth chamber a103 and the fourth chamber B104, so that the pressures in the fourth chamber a103 and the fourth chamber B104 are balanced. Of course, the cylinder cover 1 may be provided with air inlet holes and air outlet holes of the fourth chamber a103 and the fourth chamber B104, and corresponding air inlet channels and air outlet channels may be provided on the inner spherical surface of the cylinder cover 1, and the fourth chamber a103 and the fourth chamber B104 may be selected as working chambers of a compressor or an expansion stage, so as to increase the stages of the multistage compressor.

The rolling rotor compression part is used as a first stage compression, and a first chamber A107 and a first chamber B108 with alternately changed volumes are used as compression working chambers; the second chamber A105 and the second chamber B106 with alternating volumes are used as compression working chambers for the second-stage compression; the third chamber A101 and the third chamber B102 with alternately changed volumes are used as compression working chambers or expansion working chambers of third-stage compression; the first air inlet hole 705 is communicated with the third air outlet hole 12, the first air outlet hole 706 is communicated with the second air inlet hole 41, and the second air outlet hole 42 is communicated with the third air inlet hole 11, so that the working medium circulation of the three-stage compression or two-stage compression and one-stage expansion compressor is formed. The two-stage compression and one-stage expansion compressor can be used for running carbon dioxide refrigeration working medium circulation or other refrigeration working medium circulation requiring high pressure.

Claims (9)

1. A multistage spherical compressor is characterized in that: the device comprises a cylinder cover, a cylinder body, a piston, a rotary table, a sliding shoe rotary sleeve, a side support and a sector sliding block; the cylinder body and the cylinder cover are respectively provided with a hemispherical inner cavity, the hemispherical inner cavities are combined after being fixedly connected, a rotating sleeve hole is formed in the inner spherical surface of the cylinder cover, and a rotating disc shaft hole communicated with the outside of the cylinder is formed below the cylinder body; the piston is provided with a spherical top surface, a sliding shoe is protruded in the center of the spherical top surface, a piston pin seat is arranged at the lower end of the piston, and a fan-shaped groove is arranged in the center below the piston pin seat; the rotary table is provided with a rotary table spherical surface, a rotary table shaft is protruded in the center of the lower part of the rotary table spherical surface, a rotary table pin seat matched with the piston pin seat is arranged at the upper end of the rotary table spherical surface, and a fan-shaped protruding block matched with the fan-shaped groove is arranged in the center above the rotary table pin seat; the piston pin seat and the turntable pin seat form a cylindrical surface hinge through a center pin, and two ends of the cylindrical surface hinge are respectively inwards recessed to form a cylindrical groove; one end of the side support is a flat end surface, a central shaft hole is arranged in the center of the flat end surface, and the other end of the side support is a spherical surface matched with the spherical surfaces of the piston and the turntable; the two side supports are respectively arranged in the cylindrical grooves at the two ends of the cylindrical hinge, the outer circle of the side support is matched with the inner holes of the cylindrical grooves at the two ends of the cylindrical hinge and is fixedly connected at the two ends of the piston pin seat through positioning screws, and the two ends of the center pin extend out of the turntable pin seat and are respectively inserted into the center shaft holes of the side supports at the two sides; a sector slide rail penetrating along the axis direction of the cylindrical surface hinge is arranged on the turntable body, the shape of the sector slide block is matched with that of the sector slide rail, the upper arc surface and the lower arc surface of the sector slide block are jointed with the upper arc surface and the lower arc surface of the sector slide rail to form sealed movable fit, and the two end surfaces of the sector slide block are jointed with the flat end surfaces supported at the two end sides and fixedly connected through positioning screws;

The central axis of the cylindrical surface hinge is coincident with the circular arc central axes of the sector grooves and the sector slide ways and passes through the spherical center of the spherical inner cavity, the central axis of the sliding shoe is the axis passing through the center of the spherical top surface of the piston and passing through the spherical center of the spherical inner cavity, and the two parallel surfaces of the sliding shoe are symmetrically arranged on the two sides of the central axis of the sliding shoe and are parallel to the central axis of the cylindrical surface hinge; the axis of the turntable shaft forms an included angle with the axis of the sleeve hole and the central axis of the sliding shoe respectively, and the axis of the turntable shaft and the axis of the sleeve hole pass through the sphere center of the spherical inner cavity;

The piston and the turntable are arranged in the spherical inner cavity, and the spherical surface of the piston, the spherical surface of the turntable and the spherical surface of the outer side of the side support respectively form sealing movable fit with the spherical inner cavity; the sliding shoe rotating sleeve is arranged in the rotating sleeve hole, the sliding shoe is arranged in a sliding groove below the end face of the sliding shoe rotating sleeve, and the rotary disc shaft extends out of the cylinder body from the rotary disc shaft hole; when the turntable shaft is driven to rotate, a second chamber A and a second chamber B with alternately changed volumes are formed among the two side surfaces of the sector slide way of the turntable, the two side surfaces of the sector sliding block and the flat end surfaces of the two side supports, and a third chamber A and a third chamber B with alternately changed volumes are formed among the two side surfaces of the sector groove in the center of the lower end of the piston pin seat, the two side surfaces of the sector convex block in the center of the upper end of the turntable pin seat and the flat end surfaces of the two side supports; and a fourth chamber A and a fourth chamber B with alternately changed volumes are formed among the lower end surface of the piston pin seat, the upper end surface of the turntable pin seat and the flat end surfaces of the two side supports.

2. A multistage spherical compressor according to claim 1, wherein: an eccentric wheel is arranged on a rotary disc shaft extending out of the cylinder body, a circular rolling rotor cylinder body is arranged on the lower end surface of the cylinder body, and the rotary disc shaft drives the eccentric wheel to rotate in the rolling rotor cylinder body to form a rolling rotor compression part; when the turntable shaft is driven to rotate, first chambers A and B with alternately changed volumes are formed in the rolling rotor compression part.

3. A multistage spherical compressor according to claim 2, characterized in that: a through hole is arranged on the turntable pin seat, and two ends of the through hole are respectively communicated with the fourth chamber A and the fourth chamber B; the rolling rotor compression part is used as first-stage compression, the second chamber A and the second chamber B are used as second-stage compression, and the third chamber A and the third chamber B are used as third-stage compression or expansion to form a three-stage compression or two-stage compression one-stage expansion compressor.

4. A multistage spherical compressor according to claim 2, characterized in that: a through hole is arranged on the turntable pin seat, and two ends of the through hole are respectively communicated with the fourth chamber A and the fourth chamber B; the circulating working medium of the multistage compressor adopts carbon dioxide, the rolling rotor compression part is used for first-stage compression, the second chamber A and the second chamber B are used for second-stage compression, and the third chamber A and the third chamber B are used for expansion stages, so that the carbon dioxide spherical expansion compressor is formed.

5. A multistage spherical compressor according to claim 2, characterized in that: the rolling rotor compression part is used for first-stage compression, the second chamber A and the second chamber B are used for second-stage compression, the third chamber A and the third chamber B are used for third-stage compression or expansion, and the fourth chamber A and the fourth chamber B are used for fourth-stage compression, so that a four-stage compression or three-stage compression one-stage expansion compressor is formed.

6. A multistage spherical compressor according to any one of claims 2 to 5, characterized in that: the upper end face of the rolling rotor cylinder body is attached to the lower end face of the cylinder body and is fixedly connected, an end cover is arranged on the lower end face of the rolling rotor cylinder body, an eccentric wheel connected to the turntable shaft is arranged in the end cover and the cylindrical inner cavity of the rolling rotor cylinder body, a valve plate is elastically arranged between the outer circular arc of the eccentric wheel and the inner circular arc of the rolling rotor cylinder body, so that a first chamber A and a first chamber B are formed, the eccentric wheel rotates along with the turntable shaft, and the volumes of the first chamber A and the first chamber B are alternately changed; the rolling rotor cylinder body is respectively provided with a first air inlet and a first air outlet which are communicated with the outside of the cylinder, the first air inlet is communicated with the first chamber A to form an air suction working chamber of the rolling rotor compression part, and the first air outlet is communicated with the first chamber B to form an air discharge working chamber of the rolling rotor compression part; an air inlet valve is arranged on the first air inlet hole, and an air outlet valve is arranged on the first air outlet hole.

7. A multistage spherical compressor according to claim 1, wherein: the lower end face of the piston pin seat is provided with a semi-cylindrical hole with a downward opening, the sector-shaped groove is recessed in the center of the inner circumference of the semi-cylindrical hole and penetrates through the semi-cylindrical hole along the axial direction of the semi-cylindrical hole, and the cross section perpendicular to the axial direction of the semi-cylindrical hole is sector-shaped; a raised semi-circular ring body is arranged at the upper part of the turntable pin seat, a central hole of the semi-circular ring body is used as a central hole of the piston pin seat, a central pin is inserted into the central hole and used as a rotating shaft of the cylindrical surface hinge, the axis of the semi-circular ring body is overlapped with the axis of the semi-cylindrical hole of the piston pin seat, and the outer circumference of the semi-circular ring body is attached to the inner circumference of the semi-cylindrical hole; the fan-shaped protruding block protrudes out of the center of the outer circumference of the semicircular ring body and penetrates through the semicircular ring body along the axis direction, and the fan-shaped protruding block is fan-shaped in a section perpendicular to the axis of the semicircular ring body.

8. A multistage spherical compressor according to claim 1, wherein: the cylinder body is provided with a second air inlet hole and a second air outlet hole, a second air inlet channel and a second air outlet channel are arranged on the inner spherical surface of the cylinder body, one end of the second air inlet hole is communicated with the second air inlet channel, and the other end of the second air inlet hole is communicated to the outside of the cylinder body; one end of the second exhaust hole is communicated with the second row of channels, and the other end of the second exhaust hole is communicated with the outside of the cylinder body; the two sides of the fan-shaped slideway of the turntable are respectively provided with a turntable air passage, one end of one turntable air passage is communicated with the second chamber A, one end of the other turntable air passage is communicated with the second chamber B, the other ends of the two turntable air passages are respectively arranged on the spherical surface of the turntable, when the turntable shaft rotates, the volumes of the second chamber A and the second chamber B are alternately changed, and when the volume is increased, the chamber needing to be inhaled is communicated with the second air inlet passage through the turntable air passage communicated with the chamber needing to be inhaled, and the air is inhaled through the second air inlet hole; when the volume is reduced and the exhaust is needed, the cavity needing to be exhausted is communicated with the second exhaust channel through the turntable air passage communicated with the cavity, and high-pressure gas is exhausted through the second exhaust hole.

9. A multistage spherical compressor according to claim 1, wherein: the piston is provided with two piston air passages, one end of one piston air passage is communicated with the third chamber A, one end of the other piston air passage is communicated with the third chamber B, the other ends of the two piston air passages are arranged on the spherical surface of the piston, a third air inlet passage and a third air outlet passage are arranged on the spherical surface in the cylinder cover, a third air inlet hole and a third air outlet hole are arranged on the cylinder cover, one end of the third air inlet hole is communicated with the third air inlet passage, the other end of the third air inlet hole is communicated with the outside of the cylinder cover, one end of the third air outlet hole is communicated with the third air outlet passage, and the other end of the third air outlet hole is communicated with the outside of the cylinder cover; when the rotary table shaft rotates, the volumes of the third chamber A and the third chamber B are alternately changed, when the volume is increased and air needs to be sucked, the chamber which is required to be sucked is communicated with the third air inlet channel through a piston air channel communicated with the chamber, air is sucked through the third air inlet hole, and when the volume is reduced and air needs to be discharged, the chamber which is required to be discharged is communicated with the third air outlet channel through a piston air channel communicated with the chamber and the third air outlet hole.