Scroll compressor

Abstract

The utility model discloses a scroll compressor, which relates to the field of compressors and comprises a shell, a scroll compression mechanism, a driving mechanism, a hollow sleeve and a screw rotor body, the scroll compression mechanism, the driving mechanism, the hollow sleeve and the screw rotor body are arranged in the shell, two ends of the shell are respectively provided with an oil pool and the scroll compression mechanism, and the scroll compression mechanism is provided with a lubricating liquid inlet; a hollow rotor shaft of the driving mechanism is arranged between the scroll compression mechanism and the oil pool; the hollow sleeve is fixedly connected with the end, close to the oil pool, of the shell and arranged in the end, close to the oil pool, of the hollow rotor shaft in a sleeved mode. The screw rotor body is sleeved with the hollow sleeve and connected with the hollow rotor shaft, and the driving mechanism drives the screw rotor body to rotate around the axis of the screw rotor body through the hollow rotor shaft. When the screw rotor body rotates, lubricating liquid in the oil pool can be pumped into the inner cavity of the hollow sleeve and enters the lubricating liquid inlet through the inner cavity of the hollow rotor shaft, so that the vortex compression mechanism is lubricated. The self-lubricating compressor can be self-lubricated along with the operation of the compressor, and is compact in structure, high in integration level and good in lubricating effect.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a scroll compressor. Background Technology

[0002] Scroll compressors have advantages such as simple structure, stable operation, low noise, high mechanical efficiency, and high volumetric efficiency, and are widely used in various fields such as industry and daily life. The basic compression component of a scroll compressor consists of two eccentrically arranged scroll disks with a 180° phase difference. As the two scroll disks rotate, they form a crescent-shaped compression chamber. The volume of the compression chamber changes periodically, causing the working fluid in the compression chamber to undergo three processes: intake, compression, and exhaust, thus completing the compression process.

[0003] Scroll compressors include rotary compressors and revolution compressors. Compared to revolution compressors, rotary compressors have advantages such as smaller size, higher pressure ratio, lower noise, and higher efficiency. Rotary scroll compressors transmit driving force between the driving and driven scrolls through transmission components or transmission pins. However, in high-speed, high-pressure applications, the mechanical transmission structure of rotary compressors generates significant power loss and frictional wear during contact friction. This leads to increased compressor operating temperature, increased vibration and noise during operation, and even compressor failure, affecting the compressor's service life.

[0004] Existing scroll compressors mostly use splash lubrication or differential pressure oil supply to provide lubrication to the lubrication parts. This lubrication method has problems such as uncontrollable oil supply and unstable lubrication effect. Although some models use independent oil pumps for oil supply, they require additional control systems, which increases system complexity and cost, and results in low overall integration. Utility Model Content

[0005] The purpose of this invention is to provide a scroll compressor that solves the problems existing in the prior art. It requires no additional control, can self-lubricate while the scroll compressor is working, has a compact structure, high integration, and can adaptively adjust the amount of lubricating oil supplied, thereby improving the lubricating oil supply effect.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a scroll compressor, including a housing and a scroll compression mechanism, a drive mechanism, a hollow sleeve, and a screw rotor disposed within the housing, wherein:

[0008] An oil tank is provided at one end of the outer casing;

[0009] The vortex compression mechanism is located at the other end of the housing, and the vortex compression mechanism has a lubricating fluid inlet;

[0010] The drive mechanism includes a hollow rotor shaft, which is disposed between the scroll compression mechanism and the oil sump, and is connected to the scroll compression mechanism.

[0011] One end of the hollow sleeve is fixedly connected to the end of the outer shell near the oil tank, and the other end of the hollow sleeve is sleeved inside the end of the hollow rotor shaft near the oil tank;

[0012] The screw rotor body is sleeved inside the hollow sleeve, and the screw rotor body is connected to the hollow rotor shaft. The drive mechanism can drive the screw rotor body to rotate around its own axis through the hollow rotor shaft. The screw rotor body can pump the lubricating fluid in the oil sump to the inner cavity of the hollow sleeve by rotating around its own axis, and the lubricating fluid enters the lubricating fluid inlet through the inner cavity of the hollow rotor shaft to lubricate the scroll compressor mechanism.

[0013] Preferably, the screw rotor body includes a threaded mandrel and at least one impeller. The outer wall of the threaded mandrel is provided with threads. The threaded mandrel is sleeved inside the hollow sleeve. The threaded mandrel is fixedly connected to the hollow rotor shaft. The drive mechanism can drive the threaded mandrel to rotate around its own axis through the hollow rotor shaft. Each impeller is fixedly connected to one end of the threaded mandrel near the oil sump.

[0014] Preferably, at least one oil inlet channel is provided on the outer wall of the end of the hollow sleeve near the oil tank, the oil inlet channel is connected to the inner cavity of the hollow sleeve, and the inner cavity of the hollow sleeve is connected to the inner cavity of the hollow rotor shaft.

[0015] Preferably, both inner walls of each oil inlet channel are curved surfaces, and there is only one oil inlet channel.

[0016] Preferably, it further includes a connecting seat, which is provided with a mounting hole; the hollow sleeve includes a hollow tube body and a guide fluid, the guide fluid having an oil inlet channel communicating with the inner cavity of the hollow tube body, the inner cavity of the hollow tube body communicating with the inner cavity of the hollow rotor shaft; one end of the hollow rotor shaft near the oil sump is fitted into the mounting hole and rotatably connected to the connecting seat, one end of the hollow tube body is fixedly connected to one end of the guide fluid, the other end of the hollow tube body passes through the mounting hole and is fitted into the hollow rotor shaft, the connecting seat is fixedly connected to the end of the outer shell near the oil sump, the guide fluid is disposed between the connecting seat and the outer shell, and the connecting seat can press the guide fluid onto the outer shell.

[0017] Preferably, the end of the threaded mandrel away from the impeller extends toward the end closer to the vortex compression mechanism.

[0018] Preferably, the scroll compression mechanism includes a driving scroll disk, a transmission component, and a driven scroll disk. Both the driving and driven scroll disks are connected to the transmission component. The driving scroll disk is connected to the hollow rotor shaft, which can drive the driving scroll disk to rotate around its central axis. The driving scroll disk can also drive the driven scroll disk to rotate around its central axis via the transmission component. The driving scroll disk is provided with at least one first guide hole and at least one second guide hole, the axis of each first guide hole being parallel to the axis of the hollow rotor shaft. The axes are perpendicular to each other, and the axes of each of the second guide holes are parallel to the axis of the hollow rotor shaft; each of the first guide holes is connected to the inner cavity of the hollow rotor shaft, and each of the second guide holes is connected to the first guide hole. Each of the second guide holes penetrates the end face of the active scroll plate near the transmission component and the end face away from the transmission component; the lubricating fluid can enter each of the first guide holes from the inner cavity of the hollow rotor shaft and enter between the active scroll plate and the driven scroll plate through the second guide holes. The lubricating fluid can return to the oil sump through the second guide holes under the action of gravity.

[0019] Preferably, the transmission component is a transmission slip ring or a transmission pin assembly.

[0020] Preferably, the vortex compression mechanism further includes a hollow air inlet end cap, which is fixedly connected to the outer shell and divides the inner cavity of the outer shell into an upper cavity and a lower cavity. The vortex compression mechanism and the drive mechanism are respectively disposed in the upper cavity and the lower cavity. The hollow rotor shaft is rotatably connected to the air inlet end cap, and the inner cavity of the hollow rotor shaft, the inner cavity of the air inlet end cap, and the first guide hole can be connected in sequence. The air inlet end cap is provided with at least one through hole, and both ends of each through hole are connected to the upper cavity and the lower cavity. The lubricating fluid can enter the drive mechanism through the second guide hole and the through hole under the action of gravity, and the lubricating fluid can return to the oil sump through the second guide hole and the through hole under the action of gravity.

[0021] Preferably, the vortex compression mechanism further includes an exhaust end cap and a hollow driven rotating shaft. The exhaust end cap is fixedly connected to the outer shell and divides the upper cavity into an exhaust chamber and a compression chamber. The vortex compression mechanism is disposed in the compression chamber. The driven rotating shaft is rotatably connected to the exhaust end cap, and the driven vortex disk is fixedly connected to the driven rotating shaft. The driven vortex disk is provided with a compression chamber exhaust port, and the compression chamber exhaust port, the inner cavity of the driven rotating shaft, and the exhaust chamber are sequentially connected.

[0022] The present invention achieves the following technical advantages over the prior art:

[0023] This utility model provides a scroll compressor, including a housing and a scroll compression mechanism, a drive mechanism, a hollow sleeve, and a screw rotor body disposed within the housing. One end of the hollow sleeve is fixedly connected to the end of the housing near the oil sump, and the other end of the hollow sleeve is fitted inside the hollow rotor shaft near the oil sump. The screw rotor body is fitted inside the hollow sleeve and connected to the hollow rotor shaft. The drive mechanism can drive the screw rotor body to rotate around its own axis through the hollow rotor shaft. By rotating around its own axis, the screw rotor body can pump the lubricating fluid in the oil sump to the inner cavity of the hollow sleeve and allow the lubricating fluid to enter the lubricating fluid inlet through the inner cavity of the hollow rotor shaft, thereby lubricating the scroll compression mechanism.

[0024] The screw rotor rotates within a hollow sleeve, pumping lubricating fluid into the sleeve's inner cavity. This lubricating fluid then flows along the inner cavity of the hollow rotor shaft into the lubricating inlet, thus lubricating the scroll compressor mechanism. By integrating the screw rotor and hollow sleeve within the hollow rotor shaft, the compressor occupies significantly less space in both the radial and axial directions, resulting in a compact scroll compressor structure and reduced overall size. Furthermore, the screw rotor rotates automatically upon startup, achieving self-lubrication and providing continuous lubrication during operation. The lubricating oil supply is stable and reliable, requiring no additional control and demonstrating a high degree of integration. Both the screw rotor and the scroll compressor mechanism are driven by a drive mechanism. The screw rotor's speed and the scroll compressor's operating speed are automatically matched. When the scroll compressor operates at high speed, the screw rotor rotates at high speed, resulting in a larger lubricating oil supply. Conversely, when the scroll compressor operates at low speed, the screw rotor receives less lubricating oil. This adaptive adjustment of the lubricating oil supply improves its effectiveness. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the scroll compressor provided in Example 2;

[0027] Figure 2 This is a schematic diagram of the structure of the hollow sleeve provided by this utility model;

[0028] Figure 3 This is a schematic diagram of the transmission component provided in Example 2;

[0029] Figure 4This is a schematic diagram of the structure of the screw rotor body provided by this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the active vortex disk provided in Example 2;

[0031] Figure 6 This is a schematic diagram of the lubrication oil circuit of the scroll compressor provided in Example 2;

[0032] Figure 7 This is a schematic diagram of the scroll compressor provided in Example 3;

[0033] Figure 8 This is a schematic diagram of the structure of the active vortex disk provided in Example 3;

[0034] Figure 9 This is a schematic diagram of the driven scroll disk provided in Example 3;

[0035] Figure 10 This is a schematic diagram of the lubrication oil circuit of the scroll compressor provided in Example 3;

[0036] In the diagram: 100, scroll compressor; 1, exhaust casing; 101, exhaust port; 2, intake casing; 3, base casing; 4, exhaust end cover; 5, driven scroll; 501, compression chamber exhaust port; 502, transmission pin groove; 6, driving scroll; 601, first guide hole; 602, second guide hole; 603, first keyway; 604, pin fixing hole; 7, drive shaft; 8, intake end cover; 801, through hole; 9, hollow rotor shaft; 10, threaded mandrel; 1001, impeller; 1002, threaded structure; 11, hollow sleeve; 1101, guide fluid; 1102, oil inlet channel; 12, rotor; 13, transmission component; 1301, first protrusion; 1302, second protrusion; 14, driven shaft; 15, stator; 16, motor casing; 17, bearing housing. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] The purpose of this invention is to provide a scroll compressor that solves the problems existing in the prior art. It requires no additional control, can self-lubricate while the scroll compressor is working, has a compact structure, high integration, and can adaptively adjust the amount of lubricating oil supplied, thereby improving the lubricating oil supply effect.

[0039] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1

[0041] like Figures 1-10 As shown, this embodiment provides a scroll compressor 100, including a housing and a scroll compression mechanism, a drive mechanism, a hollow sleeve 11, and a screw rotor body disposed within the housing, wherein:

[0042] An oil sump is provided at one end of the outer casing;

[0043] The scroll compressor mechanism is located at the other end of the housing and has a lubricating fluid inlet.

[0044] The drive mechanism includes a hollow rotor shaft 9, which is disposed between the scroll compressor mechanism and the oil sump, and is connected to the scroll compressor mechanism.

[0045] One end of the hollow sleeve 11 is fixedly connected to the end of the outer shell near the oil sump, and the other end of the hollow sleeve 11 is sleeved inside the hollow rotor shaft 9 near the oil sump.

[0046] The screw rotor body is sleeved inside the hollow sleeve 11 and connected to the hollow rotor shaft 9. The drive mechanism can drive the screw rotor body to rotate around its own axis through the hollow rotor shaft 9. The screw rotor body can pump the lubricating fluid in the oil sump to the inner cavity of the hollow sleeve 11 by rotating around its own axis, and the lubricating fluid enters the lubricating fluid inlet through the inner cavity of the hollow rotor shaft 9 to lubricate the scroll compressor mechanism.

[0047] The screw rotor rotates within the hollow sleeve 11, pumping lubricating fluid into the inner cavity of the hollow sleeve 11. This lubricating fluid then flows along the inner cavity of the hollow rotor shaft 9 into the lubricating fluid inlet, thus lubricating the scroll compressor mechanism. By integrating the screw rotor and hollow sleeve 11 within the hollow rotor shaft 9, the radial space occupied is significantly reduced, which contributes to a compact scroll compressor 100 structure and a smaller overall size. Furthermore, when the drive mechanism is working, the scroll compressor 100 starts working and drives the screw rotor to rotate, simultaneously lubricating it. Lubrication continues while the scroll compressor 100 is working, ensuring a stable and reliable lubricant supply without the need for additional control, resulting in a high degree of integration. Both the screw rotor and the scroll compressor mechanism are driven by the drive mechanism, and the speed of the screw rotor and the working speed of the scroll compressor mechanism 100 can be automatically matched. That is, when the scroll compressor mechanism 100 is working at high speed, the screw rotor rotates at high speed, achieving a larger lubricant supply. Conversely, when the scroll compressor mechanism 100 is working at low speed, the lubricant supply to the screw rotor is less, improving the lubricant supply effect.

[0048] In this embodiment, the screw rotor body includes a threaded mandrel 10 and at least one impeller 1001. The outer wall of the threaded mandrel 10 is threaded, and the threaded mandrel 10 is fitted inside a hollow sleeve 11. The threaded mandrel 10 is fixedly connected to the hollow rotor shaft 9, and the drive mechanism can drive the threaded mandrel 10 to rotate around its own axis via the hollow rotor shaft 9. Each impeller 1001 is fixedly connected to the end of the threaded mandrel 10 near the oil sump. The hollow sleeve 11 connects to the oil sump, and the impellers 1001 rotate inside the hollow sleeve 11, thereby pumping lubricating fluid into the gap between the fixed sleeve and the threaded mandrel 10. The threaded mandrel 10 and the hollow sleeve 11 rotate relative to each other, forming a screw pump structure that allows the lubricating fluid to better enter the lubricating fluid inlet through the inner cavity of the hollow sleeve 11 and the inner cavity of the hollow rotor shaft 9.

[0049] In this embodiment, at least one oil inlet channel 1102 is provided on the outer wall of the end of the hollow sleeve 11 near the oil tank. The oil inlet channel 1102 communicates with the inner cavity of the hollow sleeve 11, and the inner cavity of the hollow sleeve 11 communicates with the inner cavity of the hollow rotor shaft 9. Lubricating fluid can enter the hollow sleeve 11 through the oil inlet channel 1102 and then enter the lubricating fluid inlet.

[0050] In this embodiment, the hollow sleeve 11 includes a hollow tube body and a guide fluid 1101. At least part of the hollow tube body is sleeved inside the hollow rotor shaft 9. The guide fluid 1101 is fixedly connected to one end of the hollow tube body near the oil sump. The hollow tube body is provided with a first channel extending along the length of the hollow tube body. The guide fluid 1101 is provided with at least one oil inlet channel 1102 communicating with the first channel. The end of the guide fluid 1101 away from the hollow tube body is in contact with the inner bottom wall of the outer shell.

[0051] In this embodiment, both inner sidewalls of each oil inlet channel 1102 are curved surfaces. Preferably, there is only one oil inlet channel 1102, which minimizes the oil inlet area and facilitates the formation of negative pressure within the first channel, thereby enhancing the pumping effect.

[0052] In this embodiment, the end of the threaded mandrel 10 away from the impeller 1001 extends to the end of the hollow rotor shaft 9 near the scroll compressor mechanism. The threads on the threaded mandrel 10 have a flow guiding effect, which is beneficial to improving the oil pumping effect.

[0053] In this embodiment, a connecting seat with a mounting hole is also included. The hollow sleeve 11 includes a hollow tube body and a guide fluid 1101. The guide fluid 1101 has an oil inlet channel 1102 communicating with the inner cavity of the hollow tube body. The inner cavity of the hollow tube body is communicating with the inner cavity of the hollow rotor shaft 9. One end of the hollow rotor shaft 9 near the oil sump is fitted into the mounting hole and rotatably connected to the connecting seat. One end of the hollow tube body is fixedly connected to one end of the guide fluid 1101. The other end of the hollow tube body passes through the mounting hole and is fitted into the hollow rotor shaft 9. The connecting seat is fixedly connected to the end of the outer shell near the oil sump. The guide fluid 1101 is disposed between the connecting seat and the outer shell, and the connecting seat can press the guide fluid 1101 against the outer shell. The hollow sleeve 11 is connected to the outer shell by the pressing action of the connecting seat, simplifying the structure.

[0054] In this embodiment, the scroll compression mechanism includes a driving scroll disk 6, a transmission component 13, and a driven scroll disk 5. Both the driving scroll disk 6 and the driven scroll disk 5 are connected to the transmission component 13. The driving scroll disk 6 is connected to the hollow rotor shaft 9, which can drive the driving scroll disk 6 to rotate around its central axis. The driving scroll disk 6 can also drive the driven scroll disk 5 to rotate around its central axis via the transmission component 13. The driving scroll disk 6 is provided with at least one first guide hole 601 and at least one second guide hole 602. The axis of each first guide hole 601 is parallel to the hollow rotor shaft 9. The axes of the two rotors are perpendicular to each other, and the axes of the second guide holes 602 are parallel to the axis of the hollow rotor shaft 9. The first guide holes 601 are connected to the inner cavity of the hollow rotor shaft 9, and the second guide holes 602 are connected to the first guide holes 601. The second guide holes 602 penetrate the end face of the active scroll disk 6 near the transmission component 13 and the end face away from the transmission component 13. The lubricating fluid can enter the first guide holes 601 from the inner cavity of the hollow rotor shaft 9 and enter the space between the active scroll disk 6 and the driven scroll disk 5 through the second guide holes 602. The lubricating fluid can return to the oil sump through the second guide holes 602 under the action of gravity. The lubricating fluid entering the first guide hole 601 can enter the second guide hole 602 under the action of centrifugal force generated by the rotation of the active worm gear disk. Part of the lubricating fluid enters between the active worm gear disk 6 and the driven worm gear disk 5 along the second guide hole 602 to lubricate the friction pair of the worm gear compression mechanism. Part of the lubricating oil can flow back to the oil sump along the second guide hole 602 under the action of gravity, so as to achieve recycling.

[0055] In this embodiment, the vortex compression mechanism further includes a hollow air inlet cover 8, which is fixedly connected to the outer shell and divides the inner cavity of the outer shell into an upper cavity and a lower cavity. The vortex compression mechanism and the drive mechanism are respectively disposed in the upper cavity and the lower cavity. The hollow rotor shaft 9 is rotatably connected to the air inlet cover 8. The inner cavity of the hollow rotor shaft 9, the inner cavity of the air inlet cover 8, and the first guide hole 601 can be connected in sequence. The air inlet cover 8 is provided with at least one through hole 801, and both ends of each through hole 801 are connected to the upper cavity and the lower cavity. The lubricating fluid can enter the drive mechanism through the second guide hole 602 and the through hole 801 under the action of gravity. The lubricating fluid can return to the oil sump through the second guide hole 602 and the through hole 801 under the action of gravity.

[0056] In this embodiment, the scroll compression mechanism further includes an exhaust end cover 4 and a hollow driven shaft 14. The exhaust end cover 4 is fixedly connected to the outer shell and divides the upper cavity into an exhaust chamber and a compression chamber. The scroll compression mechanism is disposed in the compression chamber. The driven shaft 14 and the exhaust end cover 4 are connected by bearings. The driven scroll disk 5 is fixedly connected to the driven shaft 14. The driven scroll disk 5 is provided with a compression chamber exhaust port 501. The compression chamber exhaust port 501, the inner cavity of the driven shaft 14, and the exhaust chamber are sequentially connected. Lubricating oil can enter the upper end of the driven shaft 14 through the compression chamber exhaust port 501 and the inner cavity of the driven shaft 14, and move between the driven shaft 14 and the exhaust end cover 4 under the action of centrifugal force, thereby lubricating the rotating pair between the driven shaft 14 and the exhaust end cover 4.

[0057] In this embodiment, the central axes of the active scroll disk 6 and the driven scroll disk 5 have a fixed eccentricity, which is the designed rotation radius of the scroll disks. The active scroll disk 6 and the driven scroll disk 5 can form a compression working chamber.

[0058] In this embodiment, a hollow drive shaft 7 is also included. The active scroll plate 6 is bolted to the drive shaft 7 via a flange structure, and a sealing ring is provided between the flange structure and the drive shaft 7. The drive shaft 7 is connected to the hollow rotor shaft 9 via a transmission key, and the drive shaft 7 is rotatably connected to the air inlet end cover 8. The hollow rotor shaft 9 is connected to the base housing 3 via a bearing and is also connected to the rotor 12. When the rotor 12 rotates, it drives the hollow rotor shaft 9 and the drive shaft 7 to rotate. The drive shaft 7 drives the active scroll plate 6 to rotate, which in turn drives the driven scroll plate 5 to rotate.

[0059] In this embodiment, the connecting seat is a bearing seat 17. The hollow rotor shaft 9 is connected to the bearing seat 17 via a bearing. The bearing seat 17 is fixedly connected to the base housing 3 via bolts. The bearing seat 17 can press and fix the hollow sleeve 11 onto the base housing 3. During the operation of the compressor, the hollow sleeve 11 and the base housing 3 are relatively stationary, while the threaded mandrel 10 rotates relative to the hollow sleeve 11. The threaded structure 1002 on the threaded mandrel 10 cooperates with the hollow sleeve 11 to form a screw pump structure. An impeller 1001 is provided on the threaded mandrel 10. The two are interference-fitted and remain relatively stationary. The oil inlet channel 1102 connects to the oil sump. The impeller 1001 on the threaded mandrel 10 rotates within the guide fluid 1101 on the hollow sleeve 11. The two cooperate to form an oil pumping structure, thereby pumping the lubricating fluid in the oil sump to the inner cavity of the hollow sleeve 11.

[0060] In this embodiment, the hollow rotor shaft 9 has a variable diameter design, with a larger inner diameter at the end near the oil bath and a smaller inner diameter at the end near the scroll compression mechanism. The threaded mandrel 10 is interference-fitted with the hollow rotor shaft 9 via a threaded structure 1002. The hollow sleeve 11 has a variable diameter design, with its inner diameter gradually increasing from bottom to top.

[0061] In this embodiment, the drive mechanism further includes a motor housing 16 and a stator 15 and a rotor 12 disposed within the motor housing 16. The stator 15 is connected to the motor housing 16, and the rotor 12 is sleeved within the stator 15 and can rotate relative to the stator 15 under the action of the stator 15.

[0062] In this embodiment, the outer casing includes an exhaust housing 1, an intake housing 2, and a base housing 3, which are fixedly connected from top to bottom. The bottom of the base housing 3 protrudes outward to form an oil sump. The exhaust housing 1 and the exhaust end cover 4 form an exhaust chamber, and the exhaust end cover 4, the intake housing 2, and the intake end cover 8 form a compression chamber. The lower cavity is the motor cavity.

[0063] In this embodiment, the scroll compressor 100 uses a working fluid-cooled motor. The working fluid is introduced through the air inlet hole on the air inlet housing 2, flows through the drive mechanism, and enters the compression working chamber through the through hole 801 on the air inlet end cover 8. After compression, the working fluid flows into the hollow driven shaft 14 through the compression chamber exhaust port 501 on the driven scroll disk 5, and is finally discharged through the exhaust port 101 on the exhaust housing 1.

[0064] The scroll compressor 100 provided in this embodiment is a self-rotating scroll compressor 100. The driving scroll disk 6 and the driven scroll disk 5 rotate at the same speed and in the same direction during operation, with an eccentricity between their centers of rotation. Because the two scroll disks of the self-rotating scroll compressor 100 rotate, the sidewall of the compression chamber only experiences strong shear acceleration of the working fluid in the near-wall region, while causing less disturbance to the working fluid in the main flow region. The revolution of the scroll teeth in the revolving scroll compressor 100 causes strong disturbance kinetic energy in the working fluid in the main flow region inside the compression chamber. Comparatively, the self-rotating scroll compressor 100 has lower pressure energy loss and higher compression efficiency.

[0065] The scroll compressor 100 uses lubricating oil to cool and lubricate the scroll compression mechanism and drive mechanism. Its working process is as follows:

[0066] Lubricating oil is stored in an oil sump formed by the base housing 3. When the compressor is working, the lubricating oil flows into the central area of ​​the base housing 3 through the oil inlet channel 1102 of the guide fluid 1101 on the fixed sleeve. The threaded spindle 10 drives the impeller 1001 to rotate and cooperates with the guide fluid 1101 to form an oil pumping structure, pumping the lubricating oil into the threaded structure 1002 area on the threaded spindle 10. The threaded structure 1002 of the threaded spindle 10 and the fixed sleeve form a screw pump structure, causing the lubricating oil to move towards the compression chamber. It enters the scroll compressor 100 mechanism through the hollow rotor shaft 9, the drive shaft 7, the first guide hole 601 and the second guide hole 602 on the active scroll disk 6, realizing the lubrication and cooling of the mechanical structure inside the scroll compressor 100 mechanism. The lubricating oil can enter the drive mechanism below through the second guide hole 602 and the through hole 801 on the air inlet end cover 8, realizing the lubrication and cooling of the drive mechanism, and finally returning to the oil sump in the base housing 3.

[0067] Example 2

[0068] This embodiment provides a scroll compressor 100, and the transmission component 13 is a transmission slip ring.

[0069] In this embodiment, two first protrusions 1301 and two second protrusions 1302 are provided on one end face of the transmission slip ring. The two first protrusions 1301 and the two second protrusions 1302 are arranged opposite each other in the radial direction of the transmission slip ring. Two first keyways 603 and two second keyways are respectively provided on the driving scroll plate 6 and the driven scroll plate 5. The two first protrusions 1301 are respectively disposed within the two first keyways 603 and cooperate with them, causing the driving scroll plate 6 and the transmission slip ring to move relative to each other during operation. This relative movement is a translational motion with a sinusoidal displacement. The two second protrusions 1302 are respectively disposed within the two second keyways and cooperate with them, causing the driven scroll plate 5 and the transmission slip ring to move relative to each other during operation. This relative movement is also a translational motion with a sinusoidal displacement. The line connecting the two first keyways 603 and the line connecting the two second keyways are perpendicular to each other. During the operation of the compressor, the driving scroll 6 drives the driven scroll 5 to move through the transmission slip ring. Both rotate at the same speed, and there is a certain eccentricity between their centers of rotation. The eccentricity is the design radius of rotation of the scroll. The lubricating fluid lubricates the friction pairs between the transmission slip ring, the driven scroll 5, and the driving scroll 6.

[0070] The other structures and their connections in this embodiment are the same as in Embodiment 1.

[0071] Example 3

[0072] This embodiment provides a scroll compressor 100, and the transmission component 13 is a transmission pin assembly.

[0073] In this embodiment, the transmission pin assembly includes multiple transmission pins, preferably six. The driven scroll 5 has multiple transmission pin grooves 502 radially arranged, preferably six. One end of each transmission pin is fixedly connected to the driving scroll 6, and the other end of each transmission pin is disposed within a transmission pin groove 502. The driven scroll 5 and the transmission pins cooperate through the transmission pin grooves 502, and their relative motion during operation is a circular motion along the transmission pin grooves 502. The driving scroll 6 has six pin fixing holes 604 radially arranged, and the driving scroll 6 and the transmission pins are interference-fitted through the pin fixing holes 604. The driving scroll 6 and the transmission pins remain relatively stationary during operation. During the operation of the compressor, the driving scroll 6 drives the driven scroll 5 to move through the transmission pins. The driving scroll 6 and the driven scroll 5 rotate at the same speed, and their rotation centers have a certain eccentricity, which is the design radius of rotation of the scroll. The lubricant can lubricate the friction pair between the transmission pin and the transmission pin groove 502.

[0074] The other structures and their connections in this embodiment are the same as in Embodiment 1.

[0075] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A scroll compressor characterized by: The application relates to a screw compressor, which comprises a shell, a scroll compression mechanism arranged in the shell, a driving mechanism, a hollow sleeve and a screw rotor body, wherein: One end of the shell is provided with an oil pool; The scroll compression mechanism is arranged at the other end of the shell, and the scroll compression mechanism is provided with a lubricating liquid inlet; The driving mechanism comprises a hollow rotor shaft, which is arranged between the scroll compression mechanism and the oil pool and is connected with the scroll compression mechanism; One end of the hollow sleeve is fixedly connected with the end of the shell close to the oil pool, and the other end of the hollow sleeve is arranged in the interior of the end of the hollow rotor shaft close to the oil pool; The screw rotor body is arranged in the hollow sleeve, the screw rotor body is connected with the hollow rotor shaft, and the driving mechanism can drive the screw rotor body to rotate around the axis of the screw rotor body through the hollow rotor shaft; the screw rotor body can pump the lubricating liquid in the oil pool to the inner cavity of the hollow sleeve through rotation around the axis of the screw rotor body, and the lubricating liquid enters the lubricating liquid inlet through the inner cavity of the hollow rotor shaft, so as to lubricate the scroll compression mechanism.

2. The scroll compressor of claim 1, wherein: The screw rotor body comprises a threaded mandrel and at least one impeller, a thread is arranged on the outer side wall of the threaded mandrel, the threaded mandrel is arranged in the hollow sleeve, the threaded mandrel is fixedly connected with the hollow rotor shaft, and the driving mechanism can drive the threaded mandrel to rotate around the axis of the threaded mandrel through the hollow rotor shaft; each impeller is fixedly connected with the end of the threaded mandrel close to the oil pool.

3. The scroll compressor of claim 1, wherein: At least one oil inlet channel is arranged on the outer side wall of the end of the hollow sleeve close to the oil pool, the oil inlet channel is communicated with the inner cavity of the hollow sleeve, and the inner cavity of the hollow sleeve is communicated with the inner cavity of the hollow rotor shaft.

4. The scroll compressor of claim 3, wherein: The two inner side walls of each oil inlet channel are curved surfaces, and the oil inlet channel is one.

5. The scroll compressor of claim 3, wherein: The application further relates to a connecting seat provided with a mounting hole; the hollow sleeve comprises a hollow pipe body and a flow guide body, the flow guide body is provided with the oil inlet channel communicated with the inner cavity of the hollow pipe body, and the inner cavity of the hollow pipe body is communicated with the inner cavity of the hollow rotor shaft; the end of the hollow rotor shaft close to the oil pool is arranged in the mounting hole and is rotationally connected with the connecting seat, one end of the hollow pipe body is fixedly connected with one end of the flow guide body, the other end of the hollow pipe body passes through the mounting hole and is arranged in the hollow rotor shaft, the connecting seat is fixedly connected with the end of the shell close to the oil pool, the flow guide body is arranged between the connecting seat and the shell, and the connecting seat can press the flow guide body against the shell.

6. The scroll compressor of claim 2, wherein: The end of the threaded mandrel away from the impeller extends to the end close to the scroll compression mechanism.

7. The scroll compressor of claim 1, wherein: The scroll compression mechanism comprises a driving scroll, a transmission component and a driven scroll, the driving scroll and the driven scroll are connected with the transmission component, the driving scroll is connected with the hollow rotating shaft, the hollow rotating shaft can drive the driving scroll to rotate around the central rotating shaft of the driving scroll, the driving scroll can drive the driven scroll to rotate around the central rotating shaft of the driven scroll through the transmission component; the driving scroll is provided with at least one first flow guide hole and at least one second flow guide hole, the axis of each first flow guide hole is perpendicular to the axis of the hollow rotating shaft, the axis of each second flow guide hole is parallel to the axis of the hollow rotating shaft; each first flow guide hole is in communication with the inner cavity of the hollow rotating shaft, each second flow guide hole is in communication with the first flow guide hole, and each second flow guide hole penetrates the end face of the driving scroll close to the transmission component and the end face away from the transmission component; the lubricating liquid can enter each first flow guide hole from the inner cavity of the hollow rotating shaft and enter the space between the driving scroll and the driven scroll through the second flow guide hole, and the lubricating liquid can return to the oil pool through the second flow guide hole under the action of gravity.

8. The scroll compressor of claim 7, wherein: The transmission component is a transmission sliding ring or a transmission pin assembly.

9. The scroll compressor of claim 7 or 8, wherein: The scroll compression mechanism further comprises a hollow air inlet end cover, the air inlet end cover is fixedly connected with the shell and divides the inner cavity of the shell into an upper cavity and a lower cavity, the scroll compression mechanism and the driving mechanism are arranged in the upper cavity and the lower cavity respectively, the hollow rotating shaft is rotationally connected with the air inlet end cover, and the inner cavity of the hollow rotating shaft, the inner cavity of the air inlet end cover and the first flow guide hole can be sequentially communicated; at least one through hole is arranged on the air inlet end cover, both ends of each through hole are in communication with the upper cavity and the lower cavity, the lubricating liquid can enter the driving mechanism through the second flow guide hole and the through hole under the action of gravity, and the lubricating liquid can return to the oil pool through the second flow guide hole and the through hole under the action of gravity.

10. The scroll compressor of claim 9, wherein: The scroll compression mechanism further comprises an exhaust end cover and a hollow driven rotating shaft, the exhaust end cover is fixedly connected with the shell and divides the upper cavity into an exhaust cavity and a compression cavity, the scroll compression mechanism is arranged in the compression cavity, the driven rotating shaft is rotationally connected with the exhaust end cover, and the driven scroll is fixedly connected with the driven rotating shaft; the driven scroll is provided with a compression cavity exhaust port, the compression cavity exhaust port, the inner cavity of the driven rotating shaft and the exhaust cavity are sequentially communicated.

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