Energy-saving electric scroll compressor with motor connection and oil separation mechanism

Abstract

The invention relates to the technical field of air conditioner compressors, in particular to an energy-saving electric scroll compressor with a motor connection and oil separation mechanism, comprising: a housing provided with an air inlet; the static scroll plate is provided with an exhaust port and an oil return port; the movable scroll plate is meshed with the static scroll plate, is driven by the driving assembly to move, and is provided with a central exhaust hole; one end of the exhaust valve plate is fixed on the static scroll plate, and the other end covers the exhaust port; a central cavity and a gas-liquid separation cavity are arranged on two inner sides of the end cover, an exhaust cavity is arranged at the top, and an oil storage and return cavity is arranged at the bottom; the central cavity and the gas-liquid separation cavity are communicated through a first channel; the gas-liquid separation cavity is communicated with the exhaust cavity through a second channel; the gas-liquid separation cavity is communicated with the oil storage and return cavity through a third channel; the central cavity is communicated with the oil storage and return cavity through a fourth channel; an air outlet is formed in the exhaust cavity; the exhaust port is communicated with the center cavity, and the oil return port is communicated with the oil storage and return cavity. The gas-liquid separation effect of the compressor can be effectively improved, and the energy consumption of the compressor is reduced.

Description

Technical Field

[0001] This invention relates to the field of air conditioning compressor technology, and in particular to an energy-saving electric scroll compressor with a motor connection and oil separation mechanism. Background Technology

[0002] Electric scroll compressors are high-efficiency positive displacement compressors widely used in air conditioning systems for new energy vehicles and home appliances. Their core components consist of a pair of meshing stationary and moving scrolls. The eccentric translational motion of the moving scroll creates a continuously changing compression chamber, thereby achieving gas intake and compression. During operation, lubricating oil is present on various moving parts (such as the moving scroll and bearings). This oil mixes with the compressed gas, not only reducing lubricating oil levels and affecting component operation, but also resulting in a large amount of lubricating oil in the discharged compressed gas. Therefore, after gas compression, the gas-liquid mixture usually needs to be separated before the gas is discharged through the exhaust port.

[0003] In common new energy electric scroll air conditioning compressors, the gas-liquid separation structure is relatively simple, usually consisting of a single separation chamber. When gas enters the separation structure, the airflow is chaotic, and since both gas and liquid are in the same chamber, oil easily mixes with the gas upon discharge, resulting in poor gas-liquid separation. Furthermore, the separated oil needs to be transported to various moving parts via an additional oil delivery device to achieve oil reuse, leading to high manufacturing costs and energy consumption. Summary of the Invention

[0004] This invention provides an energy-saving electric scroll compressor with a motor connection and oil separation mechanism, which can effectively solve the problems in the background art.

[0005] This invention provides an energy-saving electric scroll compressor with a motor connection and oil separation mechanism, comprising: The outer casing is equipped with an air inlet. The drive components are housed within the casing; The stationary vortex disc is fixedly installed inside the housing and is equipped with an exhaust port and an oil return port; The moving scroll plate meshes with the stationary scroll plate and is driven by the drive assembly to move periodically, thereby compressing the gas and discharging the compressed gas from the exhaust port; the moving scroll plate is also provided with a central exhaust hole; The exhaust valve plate is fixed at one end to the end face of the stationary vortex disk, and the other end covers the exhaust port. An end cap is fixedly connected to the outer shell and abuts against the end of the stationary vortex disk; a central cavity and a gas-liquid separation cavity are respectively provided on both sides inside the end cap, an exhaust cavity is provided at the top, and an oil storage and return cavity is provided at the bottom; the central cavity and the gas-liquid separation cavity are connected through a first channel; the gas-liquid separation cavity and the exhaust cavity are connected through a second channel; the gas-liquid separation cavity and the oil storage and return cavity are connected through a third channel; the central cavity and the oil storage and return cavity are connected through a fourth channel; an exhaust port connected to the outside is provided in the exhaust cavity; The exhaust port is connected to the central cavity, and the oil return port is connected to the oil storage and return cavity.

[0006] Furthermore, the first, second, third, and fourth channels are all located at one end near the stationary vortex disk.

[0007] Furthermore, the fixed end of the exhaust valve plate faces the gas-liquid separation chamber, so that when the compressed gas enters the central chamber from the exhaust port, it flows in a direction away from the gas-liquid separation chamber.

[0008] Furthermore, one side of the exhaust chamber is configured as a flat plate sidewall, which is parallel to the flow direction of the compressed gas entering the central cavity from the exhaust port; a fifth channel is provided on the flat plate sidewall.

[0009] Furthermore, the direction of extension of the first channel forms an angle with the horizontal direction, and the end of the first channel that is connected to the gas-liquid separation chamber is lower than the end that is connected to the central cavity.

[0010] Furthermore, an annular oil distribution groove is provided on the stationary vortex disk, and the annular oil distribution groove is connected to the oil return port.

[0011] Furthermore, an oil return hole is provided on the stationary vortex disk, and a boss with a gradually decreasing diameter is provided inside the oil return hole, with the oil return port located on the boss.

[0012] Furthermore, the central exhaust port includes a small-diameter section and a large-diameter section, with the small-diameter section located between the large-diameter section and the stationary vortex disk.

[0013] Furthermore, the drive assembly includes a connecting block that rotates along its own connecting shaft; an eccentric block is provided on the connecting block, and a certain gap is formed between the central axis of the eccentric block and the central axis of the connecting block; the eccentric block is rotatably connected to the moving scroll disk. Multiple anti-rotation rings are set on the moving scroll plate, and each anti-rotation ring has an anti-rotation pin, which is fixed relative to the outer shell.

[0014] Furthermore, a balance block is also provided on the connecting block, with the balance block and the eccentric block located on opposite sides of the connecting block, respectively.

[0015] The technical solution of this invention can achieve the following technical effects: This compressor uses a specially designed end cap for gas-liquid separation. Multiple chambers within the end cap allow gas to move within each chamber via overflow, creating a more stable gas-liquid separation environment and improving separation efficiency. Furthermore, the chambers are directly separated, with separated gas and oil being transported above and below the still-separated gas, completely isolating them and preventing remixing during discharge. Additionally, the compressor utilizes the air pressure within the end cap to return the separated oil to the compressor's moving parts via an oil return port connected to the oil storage chamber, eliminating the need for an additional oil delivery system and effectively simplifying the structure and saving energy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an energy-saving electric scroll compressor with a motor connection and oil separation mechanism; Figure 2 A cross-sectional view of an energy-saving electric scroll compressor with a motor connection and oil separation mechanism; Figure 3 This is a schematic diagram showing the first positions of the stationary and moving scroll plates during operation of an energy-saving electric scroll compressor with a motor connection and oil separation mechanism. Figure 4 This is a schematic diagram showing the second positions of the stationary scroll and the moving scroll during the operation of an energy-saving electric scroll compressor with a motor connection and oil separation mechanism. Figure 5 This is a schematic diagram showing the third position of the stationary scroll and the moving scroll during the operation of an energy-saving electric scroll compressor with a motor connection and oil separation mechanism. Figure 6 This is a schematic diagram showing the fourth position of the stationary scroll and the moving scroll during the operation of an energy-saving electric scroll compressor with a motor connection and oil separation mechanism. Figure 7 This is a schematic diagram of the bottom structure of the static vortex disk; Figure 8 A schematic diagram of the structure of a moving vortex disk; Figure 9 This is a partial sectional view of the stationary and moving scroll disks; Figure 10Component breakdown diagrams of the stationary and moving scroll disks; Figure 11 This is a cross-sectional view of the anti-spin ring. Figure 12 This is a schematic diagram of the end cap structure; Figure 13 This is a top view of the end cap; Figure 14 This is a component breakdown diagram of the driving component.

[0018] Reference numerals: 1. Outer shell; 11. Air inlet; 2. Static vortex disk; 21. Exhaust port; 22. Oil return port; 23. Annular oil distribution groove; 24. Oil return hole; 25. Boss; 3. Moving vortex disk; 31. Central exhaust port; 32. Anti-rotation ring; 4. Exhaust valve plate; 5. End cap; 51. Central cavity; 52. Gas-liquid separation chamber; 53. Exhaust chamber; 54. Oil storage and return chamber; 55. Air outlet; 5a. First channel; 5b. Second channel; 5c. Third channel; 5d. Fourth channel; 5e. Fifth channel; 5f. Sixth channel; 6. Drive assembly; 61. Connecting block; 611. Eccentric block; 612. Balance block; 7. Anti-rotation pin. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] This invention relates to an energy-saving electric scroll compressor with a motor connection and oil separation mechanism. The main components include a housing 1, a stationary scroll plate 2, a moving scroll plate 3, an exhaust valve plate 4, an end cover 5, and a drive assembly 6. The specific structures of each component are as follows: Outer shell 1, such as Figures 1-2 As shown, an air inlet 11 connecting the inside and outside is provided.

[0022] Drive assembly 6 is housed within housing 1; drive assembly 6 is typically based on a motor structure, such as... Figure 14 As shown, it includes a stator fixed inside the housing 1 and a rotor rotating inside the stator. A connecting block 61 and other structures are provided so that the rotor can be connected to other components to achieve the driving function.

[0023] The stationary scroll plate 2 is fixedly installed inside the outer casing 1. The stationary scroll plate 2 includes a base for fixing and a stationary scroll structure for compressed air, such as... Figure 7 As shown, the chassis of the stationary vortex disk 2 is provided with an exhaust port 21 and an oil return port 22. Both the exhaust port 21 and the oil return port 22 penetrate the chassis of the stationary vortex disk 2. The exhaust port 21 is located at the center of the vortex disk, and the oil return port 22 is located outside the stationary vortex structure.

[0024] Moving scroll disk 3, such as Figure 8 As shown, it includes a chassis for connecting the drive assembly 6 and a moving scroll structure for compressed air. The moving scroll structure meshes with the stationary scroll structure of the stationary scroll disk 2, as shown. Figure 10 As shown; the moving scroll disk 3 is driven by the drive component 6 to move in a periodic circular trajectory, thereby compressing the gas and discharging the compressed gas from the exhaust port 21; the moving scroll disk 3 is also provided with a central exhaust port 31, which connects the chassis and the moving scroll structure, so that the two ends of the moving scroll disk 3 can be connected.

[0025] The exhaust valve plate 4 is fixed at one end to the bottom end face of the stationary vortex disk 2, and the area of ​​the other end of the exhaust valve plate 4 is larger than the exhaust port 21 and covers the exhaust port 21. The exhaust valve plate 4 has a certain elasticity and forms a one-way valve structure with the exhaust port 21. When the compressed gas flows out from the exhaust port 21, the compressed gas will push open the end of the exhaust valve plate 4, allowing the compressed gas to flow out. However, if there is gas flowing in the opposite direction to the stationary vortex disk 2, it will press the exhaust valve plate 4 against the stationary vortex disk 2 and block the exhaust port 21, preventing the airflow from entering the exhaust port 21.

[0026] End cap 5 is fixedly connected to the outer casing 1 and abuts against the end of the stationary vortex disk 2; end cap 5 as... Figures 12-13 As shown, the end cap 5 has multiple ribs inside, which divide the interior of the end cap 5 into multiple chambers. At the middle height of the end cap 5, there are two chambers side-by-side on both sides, namely the central chamber 51 and the gas-liquid separation chamber 52. The top is the exhaust chamber 53, and the bottom is the oil storage and return chamber 54. The central chamber 51 and the gas-liquid separation chamber 52 are connected by a first channel 5a; the gas-liquid separation chamber 52 and the exhaust chamber 53 are connected by a second channel 5b; the gas-liquid separation chamber 52 and the oil storage and return chamber 54 are connected by a third channel 5c; the central chamber 51 and the oil storage and return chamber 54 are connected by a fourth channel 5d; the exhaust chamber 53 has an outlet 55 that communicates with the outside; a sixth channel 5f is also provided on the side of the end cap 5, and a pressure relief valve is installed at the sixth channel 5f to prevent excessive air pressure inside the end cap 5. The exhaust port 21 is connected to the central cavity 51, and the oil return port 22 is connected to the oil storage and return cavity 54.

[0027] The specific working process and principle of this compressor are as follows: The flow paths of gas and oil are as follows: Figure 2As shown, gas first enters the outer casing 1 through the air inlet 11 and reaches the stationary scroll plate 2 and the moving scroll plate 3. The drive component 6 drives the moving scroll plate 3 to move in a periodic circular path according to positions 3 to 6 (i.e., the movement path of the moving scroll plate 3 is circular, but the moving scroll plate 3 itself does not rotate). Multiple crescent-shaped volume cavities are formed between the stationary scroll plate 2 and the moving scroll plate 3. These volume cavities will periodically expand and shrink as the moving scroll plate 3 moves, thereby realizing the intake, compression and exhaust of gas. The gas will eventually be sent to the center of the stationary scroll plate 2 and discharged from the exhaust port 21 into the end cover 5.

[0028] After the compressed gas enters the end cover 5, it first enters the central cavity 51. Under the influence of the constantly entering compressed gas, the gas in the central cavity 51 is agitated. Under such circumstances, the separation effect of gas and oil will be very poor. In this compressor, a separate gas-liquid separation cavity 52 is set up, and the central cavity 51 and the gas-liquid separation cavity 52 are connected through the first channel 5a. Under this structure, the gas in the central cavity 51 is usually too much, so it overflows into the gas-liquid separation cavity 52 through the first channel 5a. At this time, the gas in the gas-liquid separation cavity 52 will be much more stable than the gas in the central cavity 51. Then, under the action of gravity, the oil will automatically sink and the gas will automatically float, thereby realizing the separation of oil and liquid in the gas-liquid separation cavity 52. After separation, the gas will enter the exhaust chamber 53 through the second channel 5b and then be discharged from the outlet 55, while the oil and the gas containing a large amount of oil will enter the oil storage and return chamber 54 through the third channel 5c; the oil droplets condensed in the central chamber 51 will enter the oil storage and return chamber 54 through the fourth channel 5d.

[0029] The gas pressure in each chamber of the end cap 5 is relatively high. The oil return port 22 is connected to the high-pressure interior of the end cap 5 at one end and to the low-pressure interior of the outer shell 1 at the other end. Therefore, the oil in the oil storage and return chamber 54 will be forced back into the outer shell 1 through the oil return port 22. The oil that is forced back will first fill the contact surface between the stationary volute 2 and the moving volute 3 to ensure the smooth movement of the moving volute 3. The central exhaust port 31 will discharge the excess gas between the contact surface of the stationary volute 2 and the moving volute 3. If there is too much oil between the stationary volute 2 and the moving volute 3, the excess part will be discharged from the central exhaust port 31 of the moving volute 3 to ensure the normal movement of the moving volute 3.

[0030] Preferably, the first channel 5a, the second channel 5b, the third channel 5c, and the fourth channel 5d are all located near one end of the stationary vortex disk 2. Taking the first channel 5a as an example, since the compressed gas flows away from the stationary vortex disk 2 when it enters, this arrangement can prevent the airflow from flowing directly towards the first channel 5a, thereby ensuring that the airflow entering the gas-liquid separation chamber 52 is stable and ensuring the oil-liquid separation effect in the gas-liquid separation chamber 52; in addition, the first channel 5a located here can form a... Figures 12-13 The opening shape shown facilitates the injection molding of the end cap 5; the second channel 5b, the third channel 5c and the fourth channel 5d are similar and will not be described in detail here.

[0031] Preferably, the fixed end of the exhaust valve plate 4 faces the gas-liquid separation chamber 52, so that when the compressed gas enters the central chamber 51 from the exhaust port 21, it flows away from the gas-liquid separation chamber 52. The opening of the exhaust port 21 is achieved by the elastic deformation of the exhaust valve plate 4. The degree of deformation of the exhaust valve plate 4 is limited, thus forming a slope that affects the direction of the compressed airflow. Therefore, with the above arrangement, the compressed airflow can be made to flow away from the first channel 5a when it flows into the central chamber 51. Figures 12-13 As shown, the airflow then impacts the side wall of the end cover 5. The airflow then moves along the side wall of the end cover 5 away from the stationary vortex disk 2, and then reaches the bottom of the end cover 5 (i.e., the end of the end cover 5 away from the stationary vortex disk 2) and flows along the bottom of the end cover 5, thus forming a stable airflow circulation and preventing excessively chaotic airflow within the end cover 5 from generating noise and vibration. Preferably, multiple recesses are provided at the bottom of the end cover 5. This allows for more impacts as the airflow flows along the bottom of the end cover 5, quickly consuming the airflow energy and condensing some of the oil in the airflow, reducing the oil content of the airflow entering the gas-liquid separation chamber 52.

[0032] Preferably, one side of the exhaust chamber 53 is configured as a flat sidewall, and a fifth channel 5e is provided on the flat sidewall to connect the central chamber 51 and the exhaust chamber 53. Since the amount of gas delivered is relatively small, the remaining gas can return to the central chamber 51 through the fifth channel 5e and undergo another gas-liquid separation to further improve the degree of gas-liquid separation. The flat sidewall is parallel to the flow direction of the compressed gas entering the central chamber 51 from the exhaust port 21, so the airflow will flow along the flat sidewall and it is difficult to enter the fifth channel 5e. This ensures that the gas in the central chamber 51 that has not undergone gas-liquid separation cannot enter the exhaust chamber 53, while the gas in the exhaust chamber 53 can enter the central chamber 51, realizing unidirectional airflow.

[0033] Preferably, the extension direction of the first channel 5a forms an angle with the horizontal direction, and the end of the first channel 5a that is connected to the gas-liquid separation chamber 52 is lower than the end that is connected to the central chamber 51. This inclined first channel 5a allows the oil to be separated and fall quickly, and makes it difficult for the separated oil to return to the central chamber 51 along the first channel 5a. Similarly, when necessary, the second channel 5b, the third channel 5c, the fourth channel 5d, and the fifth channel 5e can also be set with an inclined structure similar to the first channel 5a, so that the oil in the end cap 5 can flow quickly to the oil storage and return chamber 54.

[0034] Preferably, an annular oil distribution groove 23 is provided on the stationary vortex disk 2, and the annular oil distribution groove 23 is connected to the oil return port 22, such as Figure 3 As shown, this allows the oil to be delivered to all parts of the stationary scroll plate 2, ensuring a more uniform oil film between the contact surfaces of the stationary scroll plate 2 and the moving scroll plate 3.

[0035] Because the air pressure inside the end cap 5 is relatively high during operation, to prevent the oil from being squeezed out of the oil return port 22 too quickly, it is preferable to provide an oil return hole 24 on the stationary vortex disk 2. A boss 25 with a gradually decreasing outward diameter is provided inside the oil return hole 24, and the oil return port 22 is located on the boss 25. Figure 9 As shown, excess oil will first fill the return oil hole 24. After a portion of the oil flows away from the return oil port 22, the oil around the opening of the return oil port 22 will replenish it. When replenishing, the flow direction shown in the figure will be formed. The oil flowing from the side of the boss 25 will collide with the oil directly facing the return oil port 22, thereby reducing the amount of oil entering the return oil port 22 and preventing the oil from being squeezed out of the return oil port 22 too quickly.

[0036] Preferably, the central exhaust port 31 is configured into two segments: a small-diameter segment and a large-diameter segment. The small-diameter segment is located between the large-diameter segment and the stationary scroll plate 2. This way, when the oil film between the contact surfaces of the stationary scroll plate 2 and the moving scroll plate 3 is thin, the oil pressure is low, making it difficult to force oil into the small-diameter segment; the central exhaust port 31 primarily performs the exhaust function. Conversely, when the oil film is too thick, the oil pressure is high, and excess oil is forced into the small-diameter segment, thus removing the excess oil. This structure effectively maintains the oil film thickness between the contact surfaces of the stationary scroll plate 2 and the moving scroll plate 3, thereby effectively improving the lubrication of the moving scroll plate 3 and ensuring the normal operation of the compressor.

[0037] Preferably, downward bending sections are provided at both the third channel 5c and the fourth channel 5d, which allows the oil to drip quickly into the oil storage and return chamber 54 and prevents the oil in the oil storage and return chamber 54 from returning to the upper chamber.

[0038] Connection block 61 of drive component 6, as shown Figure 14As shown, the connecting block 61 rotates along its own connecting shaft; an eccentric block 611 is provided on the connecting block 61, and a certain gap is formed between the central axis of the eccentric block 611 and the central axis of the connecting block 61; the eccentric block 611 is rotatably connected to the moving scroll disk 3. When the rotor drives the connecting block 61 to rotate, the eccentric block 611 will rotate along the central axis of the connecting block 61, thereby driving the moving scroll disk 3 to generate a circular trajectory motion; In addition, it is also necessary to prevent the moving scroll disk 3 from rotating, such as Figures 10-11 As shown, multiple anti-rotation rings 32 are provided on the moving scroll disk 3, and an anti-rotation pin 7 is provided in each anti-rotation ring 32. The anti-rotation pin 7 is fixed relative to the outer shell 1. When the moving scroll disk 3 moves, the anti-rotation pin 7 will abut against the side wall of the anti-rotation ring 32, thereby preventing the moving scroll disk 3 from rotating.

[0039] Preferably, a balance block 612 is also provided on the connecting block 61. The balance block 612 and the eccentric block 611 are located on the two sides of the connecting block 61, respectively. The weight of the balance block 612 is equivalent to that of the eccentric block 611, so that the connecting block 61 can rotate more smoothly.

[0040] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined herein, and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. An energy-saving electric scroll compressor having a motor connection and oil separation mechanism, characterized by, The utility model relates to a kind of scroll compressor, including: Housing (1) is provided with air inlet (11); Drive assembly (6) is arranged in the housing (1); Static scroll (2) is fixedly installed in the housing (1), and is provided with exhaust port (21) and oil return port (22); Dynamic scroll (3) is engaged with the static scroll (2), and is driven by the drive assembly (6) to carry out periodic movement, so that gas is compressed and compressed gas is discharged from exhaust port (21);The dynamic scroll (3) is also provided with center exhaust hole (31); Exhaust valve piece (4), one end is fixed in the end surface of the static scroll (2), and the other end covers the exhaust port (21); End cover (5) is fixedly connected with the housing (1), and is against the end of the static scroll (2);The end cover (5) is provided with center cavity (51) and gas-liquid separation cavity (52) respectively on both sides in it, is provided with exhaust cavity (53) on top, is provided with oil storage and oil return cavity (54) on bottom;The center cavity (51) and the gas-liquid separation cavity (52) are communicated by first channel (5a);The gas-liquid separation cavity (52) and the exhaust cavity (53) are communicated by second channel (5b);The gas-liquid separation cavity (52) and the oil storage and oil return cavity (54) are communicated by third channel (5c);The center cavity (51) and the oil storage and oil return cavity (54) are communicated by fourth channel (5d);Exhaust cavity (53) is provided with gas outlet (55) for communicating with outside in it; The exhaust port (21) is communicated with the center cavity (51), and the oil return port (22) is communicated with the oil storage and oil return cavity (54).

2. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 1, characterized in that, The first channel (5a), the second channel (5b), the third channel (5c) and the fourth channel (5d) are all located at one end close to the static scroll (2).

3. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 1, characterized in that, The fixed end of the exhaust valve piece (4) is towards the gas-liquid separation cavity (52), so that compressed gas flows in the direction away from the gas-liquid separation cavity (52) when entering the center cavity (51) from the exhaust port (21).

4. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 3, characterized in that, One side of the exhaust cavity (53) is provided as a flat side wall, which is parallel to the flow direction of compressed gas entering the center cavity (51) from the exhaust port (21);The flat side wall is provided with fifth channel (5e).

5. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 1, characterized in that, The first channel (5a) forms an angle with the horizontal direction in the extension direction, and the end of the first channel (5a) communicated with the gas-liquid separation cavity (52) is lower than the end communicated with the center cavity (51).

6. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 1, wherein The static scroll (2) is provided with annular oil distribution groove (23), and the annular oil distribution groove (23) is communicated with the oil return port (22).

7. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 6, characterized in that, The static scroll (2) is provided with oil return hole (24), the oil return hole (24) is provided with boss (25) gradually reducing in outward diameter, and the oil return port (22) is arranged on the boss (25).

8. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 1, wherein, The center exhaust hole (31) includes a small-diameter section and a large-diameter section, and the small-diameter section is located between the large-diameter section and the static scroll (2).

9. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 1, wherein, The driving assembly (6) comprises a connecting block (61) which rotates along its own connecting axis; an eccentric block (611) is arranged on the connecting block (61), and the center axis of the eccentric block (611) is spaced apart from the center axis of the connecting block (61); the eccentric block is rotationally connected with the movable scroll (3); A plurality of anti-rotation rings (32) are arranged on the movable scroll (3), and an anti-rotation pin (7) is arranged in each anti-rotation ring (32), and the anti-rotation pin (7) is fixed relative to the shell (1).

10. The energy-saving electric scroll compressor having a motor connection and oil separation mechanism according to claim 9, wherein, A balance block (612) is further arranged on the connecting block (61), and the balance block (612) and the eccentric block (611) are respectively located on two sides of the connecting block (61).

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