Scroll compressor

Abstract

The invention relates to the technical field of compressors, and particularly discloses a scroll compressor which is characterized in that an orbiting scroll and a static scroll are meshed to form a compression cavity, a driving assembly is in transmission connection with the orbiting scroll and can drive the orbiting scroll to rotate, the static scroll is arranged on the end face of a support and matched with the orbiting scroll, and a first vibration reduction assembly comprises a thrust plate and a first vibration reduction ring. The orbiting scroll is arranged on the end face of the thrust plate, the thrust plate is arranged between the orbiting scroll and the support, and the first vibration reduction ring is arranged between the thrust plate and the support. According to the arrangement, the dynamic vortex disc is arranged on the end face of one side of the thrust plate, the end face of the other side of the thrust plate is arranged on the end face of the support, the thrust plate is arranged between the dynamic vortex disc and the support, and the first vibration reduction ring is further introduced between the support and the thrust plate, so that vibration generated by the dynamic vortex disc and transmission of noise to the support are weakened; and resonance formed between the orbiting scroll and the support is weakened, noise and vibration of the scroll compressor are effectively reduced, and the NVH performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a scroll compressor. Background Art

[0002] A scroll compressor is a positive displacement compressor that mainly achieves gas suction, compression and discharge through the relative movement of two intermeshing spiral scrolls. When the compressor is working, the moving scroll and the stationary scroll are the core operating components of the scroll compressor, which are the main sources of compressor vibration and noise. Since the moving and stationary scrolls are set on the end face of the bracket, the vibration and noise generated by the moving and stationary scrolls mainly act on the bracket. At the same time, since the bracket and the shell are rigidly connected, the vibration and noise are further transmitted directly from the bracket to the shell and are perceived by the outside world, and even resonate with the shell, resulting in deterioration of the vibration and noise performance of the compressor.

[0003] As the core component of the air-conditioning and refrigeration system of new energy vehicles, the vibration and noise problems of scroll compressors have attracted more and more attention from automobile developers and users because they have lost the masking effect of the internal combustion engine noise of fuel vehicles.

[0004] Therefore, a scroll compressor is urgently needed to solve the above problems. Summary of the invention

[0005] An object of the present invention is to provide a scroll compressor which can effectively reduce the noise and vibration of the scroll compressor and improve the NVH performance.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a scroll compressor, comprising a housing and a compression mechanism disposed in the housing, wherein the compression mechanism comprises:

[0008] An orbiting scroll and a stationary scroll, wherein the orbiting scroll and the stationary scroll mesh with each other to form a compression chamber;

[0009] A driving assembly, the driving assembly is drivingly connected to the movable scroll and can drive the movable scroll to rotate;

[0010] A bracket, the fixed scroll is placed on the end surface of the bracket and cooperates with the movable scroll;

[0011] The first vibration damping assembly comprises a thrust plate and a first vibration damping ring, the movable scroll is arranged on the end surface of the thrust plate, the thrust plate is arranged between the movable scroll and the bracket, and the first vibration damping ring is arranged between the thrust plate and the bracket.

[0012] As a preferred technical solution of the above scroll compressor, the bracket is provided with a stepped through hole, the hole wall of the stepped through hole has multiple stepped end faces, a first annular groove is recessed in the stepped end face close to the thrust plate side, and the first vibration damping ring is placed in the first annular groove.

[0013] As a preferred technical solution of the above scroll compressor, the housing includes an outer shell and a cylinder head, the cylinder head is covered on the outer shell to form a receiving cavity, and the compression mechanism is arranged in the receiving cavity.

[0014] As a preferred technical solution of the above scroll compressor, the compression mechanism further includes a second vibration damping ring, the bracket is arranged between the stationary scroll and the inner wall of the outer shell, and the second vibration damping ring is arranged between the bracket and the inner wall of the outer shell.

[0015] As a preferred technical solution of the above scroll compressor, the inner wall of the outer shell is provided with a first stepped portion and a second stepped portion arranged in a ring shape, the first stepped portion and the second stepped portion are arranged at intervals to form a second annular groove, and the second vibration damping ring is arranged in the second annular groove.

[0016] As a preferred technical solution of the above scroll compressor, a number of first convex segments arranged at intervals are provided on the first stepped portion, a number of second convex segments arranged at intervals are provided on the second stepped portion, the number of the first convex segments and the number of the second convex segments are arranged in one-to-one correspondence, and the bracket is partially supported on the first convex segments and the second convex segments.

[0017] As a preferred technical solution of the above scroll compressor, the driving assembly includes a stator, a rotor and a crankshaft, the stator is sleeved on the outer periphery of the rotor at intervals and can drive the rotor to rotate, the rotor is fixedly sleeved on the crankshaft, and the crankshaft is connected to the moving scroll.

[0018] As a preferred technical solution of the above scroll compressor, the driving assembly further includes a first bearing, the outer ring of the first bearing is fixedly connected to the inner wall of the housing, and the inner ring of the first bearing is fixedly connected to one end of the crankshaft.

[0019] As a preferred technical solution of the above scroll compressor, the driving assembly further includes a second bearing, the outer ring of the second bearing is fixedly connected to the bracket, and the inner ring of the second bearing is fixedly connected to the other end of the crankshaft.

[0020] As a preferred technical solution of the above scroll compressor, a number of anti-rotation pins are convexly provided on the thrust plate, a number of pin holes are provided on the moving scroll, and the number of the anti-rotation pins and the number of the pin holes are in one-to-one plug-in fit to limit the self-rotation of the moving scroll.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention provides a scroll compressor, which includes a housing and a compression mechanism disposed within the housing. The compression mechanism includes: a moving scroll, a stationary scroll, a driving assembly, a bracket, and a first vibration damping assembly. The moving scroll and the stationary scroll engage to form a compression chamber. The driving assembly is drivingly connected to the moving scroll and can drive the moving scroll to rotate. The stationary scroll is placed on the end face of the bracket and cooperates with the moving scroll. The first vibration damping assembly includes a thrust plate and a first vibration damping ring. The moving scroll is disposed on the end face of the thrust plate. The thrust plate is disposed between the moving scroll and the bracket. The first vibration damping ring is disposed between the thrust plate and the bracket. With such an arrangement, the moving scroll is disposed on one end face of the thrust plate, and the other end face is placed on the end face of the bracket. The thrust plate is disposed between the moving scroll and the bracket, and the first vibration damping ring is further introduced between the bracket and the thrust plate, which weakens the transmission of vibration and noise generated by the moving scroll to the bracket. At the same time, the resonance formed between the moving scroll and the bracket is weakened, effectively reducing the noise and vibration of the scroll compressor and improving the NVH performance. Description of the Drawings

[0023] Figure 1 is an exploded view of the scroll compressor provided by the present invention;

[0024] Figure 2 is a sectional view of the scroll compressor provided by the present invention;

[0025] Figure 3 is a schematic structural view of the stationary scroll provided by the present invention;

[0026] Figure 4 is a schematic structural view of the bracket provided by the present invention Figure 1 ;

[0027] Figure 5 is a schematic structural view of the bracket provided by the present invention Figure 2 ;

[0028] Figure 6 is a sectional view of the bracket provided by the present invention;

[0029] Figure 7 is a schematic structural view of the outer shell provided by the present invention Figure 1 ;

[0030] Figure 8 is a schematic structural view of the outer shell provided by the present invention Figure 2 ;

[0031] Figure 9 is an assembly schematic view of the second vibration damping ring, the bracket, and the outer shell provided by the present invention Figure 1 ;

[0032] Figure 10 Assembly schematic of the second shock-absorbing ring, bracket and housing provided by the present invention Figure 2 ;

[0033] Figure 11 Structural schematic diagram of the cylinder head provided by the present invention;

[0034] Figure 12 is Figure 11 Cross-sectional view taken along the A-A direction in

[0035] Wherein:

[0036] 1. Moving scroll plate;

[0037] 2. Stationary scroll plate; 21. First suction groove; 22. Oil return groove;

[0038] 3. Bracket; 31. Step through hole; 311. Step end face; 32. Suction hole; 33. Oil return hole;

[0039] 4. Thrust plate; 5. First shock-absorbing ring; 6. First annular groove;

[0040] 7. Housing; 71. Suction port; 72. Second suction groove; 73. Oil sump;

[0041] 8. Cylinder head; 81. Exhaust port; 82. Silencing cavity; 83. Reinforcing rib; 84. Mounting seat;

[0042] 9. Second shock-absorbing ring; 10. First step portion; 11. Second step portion; 12. Second annular groove; 13. First protruding section; 14. Second protruding section; 15. Stator; 16. Rotor; 17. Crankshaft; 18. First bearing; 19. Second bearing. Detailed implementation manners

[0043] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0045] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0047] The technical solution of the present invention will be further described below with reference to the drawings and through specific embodiments.

[0048] Such as Figures 1 to 12As shown in the figure, this embodiment provides a scroll compressor, which includes a housing and a compression mechanism disposed within the housing. The compression mechanism includes: a moving scroll 1, a stationary scroll 2, a drive assembly, a bracket 3, and a first vibration damping assembly. The moving scroll 1 meshes with the stationary scroll 2 to form a compression chamber. The drive assembly is drivingly connected to the moving scroll 1 and is capable of driving the moving scroll 1 to rotate. The stationary scroll 2 is placed on the end face of the bracket 3 and cooperates with the moving scroll 1. The first vibration damping assembly includes a thrust plate 4 and a first vibration damping ring 5. The moving scroll 1 is disposed on the end face of the thrust plate 4. The thrust plate 4 is disposed between the moving scroll 1 and the bracket 3. The first vibration damping ring 5 is disposed between the thrust plate 4 and the bracket 3. With such a setting, the moving scroll 1 is disposed on one end face of the thrust plate 4, and the other end face is placed on the end face of the bracket 3. The thrust plate 4 is disposed between the moving scroll 1 and the bracket 3, and the first vibration damping ring 5 is further introduced between the bracket 3 and the thrust plate 4, which weakens the transmission of vibration and noise generated by the moving scroll 1 to the bracket 3. At the same time, the resonance formed between the moving scroll 1 and the bracket 3 is weakened, effectively reducing the noise and vibration of the scroll compressor and improving the NVH performance.

[0049] Optionally, please refer to Figure 5 and Figure 6 As shown in the figure, in order to ensure the assembly accuracy and stability of the first vibration damping ring 5, the bracket 3 is provided with a stepped through-hole 31. The hole wall of the stepped through-hole 31 has multiple stepped end faces 311. A first annular groove 6 is recessed on the stepped end face 311 closer to the thrust plate 4. The first vibration damping ring 5 is placed within the first annular groove 6. Further, the first vibration damping ring 5 is made of an elastic material.

[0050] Specifically, this embodiment exemplarily provides the following technical solution: To facilitate the disassembly and assembly of the housing, the housing includes an outer shell 7 and a cylinder head 8. The cylinder head 8 covers the outer shell 7 to form a receiving cavity. The compression mechanism is disposed within the receiving cavity. The cylinder head 8 is provided with a plurality of mounting seats 84. A plurality of bolts are provided on the outer shell 7. The plurality of bolts are arranged in one-to-one correspondence with the plurality of mounting seats 84, and the bolts are threadedly connected to the mounting seats 84. An annular reinforcing rib 83 is fixedly connected between the mounting seat 84 and the cylinder head 8. It should be noted that the scroll compressor in this embodiment adopts a semi-closed structure.

[0051] In this embodiment, the number of the mounting seats 84 is six, and they are spaced apart and evenly arranged along the circumferential direction of the cylinder head 8. Of course, in other embodiments, the number of the mounting seats 84 can also be set according to actual needs and will not be further limited here.

[0052] Optionally, to facilitate the discharge of the compressed gas, a sound-absorbing cavity 82 and an exhaust port 81 communicating with the sound-absorbing cavity 82 are provided within the cylinder head 8. The sound-absorbing cavity 82 communicates with the compression chamber.

[0053] In this embodiment, a plurality of first air suction grooves 21 and oil return grooves 22 are arranged at intervals on the side wall of the stationary scroll 2. The plurality of first air suction grooves 21 and the oil return grooves 22 are both communicated with the compression chamber. The housing 7 is provided with an air suction port 71 and a plurality of second air suction grooves 72 that are communicated with the air suction port 71 and arranged at intervals, and an oil sump 73 is arranged at the bottom. The bracket 3 is provided with a plurality of air suction holes 32 and oil return holes 33 at intervals. The position of the oil sump 73 corresponds to and cooperates with the oil return holes 33 and the oil return grooves 22 to form an oil return passage, so as to meet the oil return of the scroll compressor. The position of the air suction port 71 corresponds to and cooperates with the second air suction grooves 72, the air suction holes 32, and the first air suction grooves 21 to form an air supply passage, so as to supply air to the compression chamber.

[0054] Optionally, the compression mechanism further includes a second vibration damping ring 9. The bracket 3 is arranged between the stationary scroll 2 and the inner wall of the housing 7, and the second vibration damping ring 9 is arranged between the bracket 3 and the inner wall of the housing 7. Further, the second vibration damping ring 9 is made of an elastic material. With such a setting, the second vibration damping ring 9 is introduced to reduce the transmission of the vibration and noise generated by the moving scroll 1 and the stationary scroll 2 from the bracket 3 to the housing 7, and weaken the resonance formed among the stationary scroll 2, the bracket 3, and the housing 7.

[0055] Optionally, please refer to Figure 7 As shown, in order to ensure the assembly accuracy and stability of the second vibration damping ring 9, a first step portion 10 and a second step portion 11 arranged in a ring shape are provided on the inner wall of the housing 7. The first step portion 10 and the second step portion 11 are arranged at intervals to form a second annular groove 12, and the second vibration damping ring 9 is arranged in the second annular groove 12.

[0056] Optionally, in order to ensure the axial fitting accuracy between the bracket 3 and the housing 7 and further achieve vibration reduction and noise reduction, a plurality of first convex segments 13 arranged at intervals are provided on the first step portion 10, and a plurality of second convex segments 14 arranged at intervals are provided on the second step portion 11. The plurality of first convex segments 13 and the plurality of second convex segments 14 are arranged in one-to-one correspondence, and the bracket 3 is partially supported on the first convex segments 13 and the second convex segments 14. With such a setting, during actual assembly, the bracket 3 is axially pressed on the second vibration damping ring 9. As the axial locking force gradually increases, the second vibration damping ring 9 is compressed until the bracket 3 reaches and abuts against the first convex segments 13 and the second convex segments 14, so as to achieve the function of axial positioning and ensure the axial assembly accuracy between the housing 7 and the bracket 3. It adopts an intermittent rigid-flexible cooperation method, which not only retains the stability of the rigid cooperation but also utilizes the damping effect and vibration isolation effect of the elastic material of the second vibration damping ring 9 to achieve the purpose of ensuring the fitting accuracy and improving vibration and noise, that is, it not only ensures the axial assembly accuracy of the bracket 3, the stationary scroll 2 arranged on the bracket 3, and other related parts, but also weakens the transmission of vibration and noise from the bracket 3 to the housing 7. It should be noted that Figure 10 the arrow direction in

[0057] Specifically, when the scroll compressor is actually operating, the vibration and noise generated by the moving scroll 1 act on the thrust plate 4. During the process of the vibration and noise being transmitted to the bracket 3, they are attenuated by the first vibration damping ring 5 between the thrust plate 4 and the bracket 3. The attenuated vibration and noise will continue to be transmitted to the bracket 3. At the same time, the vibration and noise generated by the stationary scroll 2 will also be directly transmitted to the bracket 3. When the two continue to be transmitted to the housing 7, they will encounter the second vibration damping ring 9 and be further attenuated by it, so as to optimize the overall vibration and noise performance of the scroll compressor.

[0058] In this embodiment, the drive assembly includes a stator 15, a rotor 16 and a crankshaft 17. The stator 15 is sleeved at intervals on the outer periphery of the rotor 16 and can drive the rotor 16 to rotate. The rotor 16 is fixedly sleeved on the crankshaft 17, and the crankshaft 17 is connected to the moving scroll 1. Further, the stator 15 is in interference fit with the inner wall of the housing 7, and the crankshaft 17 is in interference fit with the rotor 16.

[0059] Optionally, in order to better support the rotation of the crankshaft 17, reduce friction, and ensure its rotation accuracy and efficiency, the drive assembly further includes a first bearing 18 and a second bearing 19. The outer ring of the first bearing 18 is fixedly connected to the inner wall of the housing, and the inner ring of the first bearing 18 is fixedly connected to one end of the crankshaft 17. The outer ring of the second bearing 19 is fixedly connected to the bracket 3, and the inner ring of the second bearing 19 is fixedly connected to the other end of the crankshaft 17.

[0060] Optionally, a plurality of anti-rotation pins protrude from the thrust plate 4, and a plurality of pin holes are formed in the moving scroll 1. The plurality of anti-rotation pins are inserted into and matched with the plurality of pin holes one by one to limit the self-rotation of the moving scroll 1.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A scroll compressor, characterized in that, Comprising a housing and a compression mechanism disposed within the housing, the compression mechanism comprising: A moving scroll (1) and a stationary scroll (2), the moving scroll (1) meshing with the stationary scroll (2) to form a compression chamber; A drive assembly, the drive assembly being drivingly connected to the moving scroll (1) and capable of driving the moving scroll (1) to rotate; A bracket (3), the stationary scroll (2) being placed on the end face of the bracket (3) and cooperating with the moving scroll (1); A first shock-absorbing assembly, the first shock-absorbing assembly comprising a thrust plate (4) and a first shock-absorbing ring (5), the moving scroll (1) being disposed on the end face of the thrust plate (4), the thrust plate (4) being disposed between the moving scroll (1) and the bracket (3), and the first shock-absorbing ring (5) being disposed between the thrust plate (4) and the bracket (3).

2. The scroll compressor according to claim 1, characterized in that, The bracket (3) is provided with a stepped through-hole (31), the hole wall of the stepped through-hole (31) has multiple stepped end faces (311), a first annular groove (6) is recessed on the stepped end face (311) closer to the thrust plate (4) side, and the first shock-absorbing ring (5) is placed within the first annular groove (6).

3. The scroll compressor according to claim 1, wherein, The housing comprises an outer shell (7) and a cylinder head (8), the cylinder head (8) being covered on the outer shell (7) to form a receiving cavity, and the compression mechanism is disposed within the receiving cavity.

4. The scroll compressor according to claim 3, characterized in that, The compression mechanism further comprises a second shock-absorbing ring (9), the bracket (3) is disposed between the stationary scroll (2) and the inner wall of the outer shell (7), and the second shock-absorbing ring (9) is disposed between the bracket (3) and the inner wall of the outer shell (7).

5. The scroll compressor according to claim 4, wherein, The inner wall of the outer shell (7) is provided with a first stepped portion (10) and a second stepped portion (11) arranged in a ring, the first stepped portion (10) and the second stepped portion (11) are spaced apart to form a second annular groove (12), and the second shock-absorbing ring (9) is disposed within the second annular groove (12).

6. The scroll compressor according to claim 5, wherein, A plurality of first protruding segments (13) arranged at intervals are provided on the first stepped portion (10), a plurality of second protruding segments (14) arranged at intervals are provided on the second stepped portion (11), the plurality of first protruding segments (13) and the plurality of second protruding segments (14) are arranged in one-to-one correspondence, and the bracket (3) is partially supported on the first protruding segments (13) and the second protruding segments (14).

7. The scroll compressor according to any one of claims 1-6, characterized in that, The drive assembly comprises a stator (15), a rotor (16) and a crankshaft (17), the stator (15) is sleeved around the outer periphery of the rotor (16) at intervals and capable of driving the rotor (16) to rotate, the rotor (16) is fixedly sleeved on the crankshaft (17), and the crankshaft (17) is connected to the moving scroll (1).

8. The scroll compressor according to claim 7, characterized in that, The drive assembly further comprises a first bearing (18), the outer ring of the first bearing (18) is fixedly connected to the inner wall of the housing, and the inner ring of the first bearing (18) is fixedly connected to one end of the crankshaft (17).

9. The scroll compressor according to claim 8, wherein, The driving assembly further includes a second bearing (19), an outer ring of the second bearing (19) is fixedly connected to the bracket (3), and an inner ring of the second bearing (19) is fixedly connected to the other end of the crankshaft (17).

10. The scroll compressor according to any one of claims 1-6, characterized in that, A plurality of anti-rotation pins protrude from the thrust plate (4), and a plurality of pin holes are formed in the moving scroll (1). The plurality of anti-rotation pins are inserted into and cooperate with the plurality of pin holes one by one to limit the rotation of the moving scroll (1).

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