Axial flow turbo-cone air compressor

Abstract

The application relates to the field of air compressors and provides an axial flow vortex cone air compressor which comprises a cone air cylinder, bearing end cover one, bearing assemblies, a bearing end cover nut, bearing end cover two, a driving connection end, a fan blade shaft and cone fan blades, the inside of the cone air cylinder is formed with a conical compression cavity extending along the axial direction; two bearing assemblies are arranged on the bearing end cover one and the bearing end cover two respectively, the cone fan blades are arranged on the outer periphery of the fan blade shaft and located in the conical compression cavity, the plurality of cone fan blades are arranged along the axial direction of the fan blade shaft, the outer diameter of the cone fan blades gradually changes along the axial direction of the fan blade shaft and matches the taper of the conical compression cavity; the bearing end cover nut is rotationally arranged on the bearing end cover one, the bearing end cover nut and one of the bearing assemblies abut, and a radial gap of 0.10mm-0.30mm is formed between the outer edge of the cone fan blades and the inner wall of the conical compression cavity. The gap between the cone fan blades and the inner wall of the conical compression cavity is guaranteed, the manufacturing cost and the consumption cost are greatly reduced, the failure rate is lower, and the lubrication can be automatically performed.

Description

Technical Field

[0001] This invention relates to the field of air compressor technology, and specifically to an axial flow vortex air compressor. Background Technology

[0002] Air compressors are widely used in industrial manufacturing, gas transportation, and automation equipment. Among them, axial flow scroll cone air compressors typically use a fan shaft to drive a cone fan blade to rotate at high speed, compressing air to meet the air supply requirements under different operating conditions.

[0003] However, existing air compressors still have the following shortcomings: On the one hand, there is usually contact friction or significant frictional resistance between the conical fan blades and the conical fan casing, which not only increases the drive load and energy consumption, but also requires some structures to rely on lubricating oil as a sealing medium to ensure compression effect. This not only increases the manufacturing cost of the equipment and the cost of lubricating oil, but also easily leads to increased equipment failure rate and maintenance workload due to lubricating oil aging, leakage or contamination.

[0004] On the other hand, the fan blade shaft and bearing assembly are high-speed rotating mating parts, and the lubrication position is relatively hidden. Traditionally, lubrication oil needs to be added manually after the machine is stopped, which is cumbersome and makes it difficult to ensure the timeliness and quantity of lubrication oil addition. If the lubrication is insufficient, it can easily lead to bearing wear, fan blade shaft overheating or even jamming, affecting the operational stability and service life of the air compressor. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention aims to provide an axial-flow scroll compressor, which is achieved through the following technical solution: An axial flow vortex-cone air compressor includes a conical air casing, a first bearing end cover, a bearing assembly, a second bearing end cover nut, a second bearing end cover, a drive connection end, a fan shaft, and conical fan blades. The conical air casing forms a conical compression chamber that extends axially. Bearing end cap one and bearing end cap two are respectively set at both ends of the conical air tube. Two bearing assemblies are respectively set on bearing end cap one and bearing end cap two. Both bearing assemblies support the fan blade shaft. The fan blade shaft is set inside the conical air tube. The conical fan blades are set on the outer periphery of the fan blade shaft and located in the conical compression cavity. Multiple conical fan blades are arranged along the axial direction of the fan blade shaft. The outer diameter of the conical fan blades gradually changes along the axial direction of the fan blade shaft and matches the taper of the conical compression cavity. The bearing end cap nut is rotatably mounted on the bearing end cap, and the bearing end cap nut abuts against one of the bearing assemblies. A radial gap of 0.10mm-0.30mm is formed between the outer edge of the conical fan blade and the inner wall of the conical compression chamber. The drive connection end is connected to the fan blade shaft, and the drive connection end is connected to the motor.

[0006] Optionally, the conical compression chamber gradually narrows in diameter from the inlet end to the outlet end.

[0007] Optionally, the electric motor can be an AC variable frequency motor or a hydraulic motor.

[0008] Optionally, an air intake filter is provided at the air intake end of the cone-shaped air duct.

[0009] Optionally, an elastic retaining ring is provided inside the bearing end cover.

[0010] Optionally, a sleeve is provided inside the bearing end cover.

[0011] Optionally, multiple sensors are installed on the outer wall of the cone-shaped air duct.

[0012] Optionally, an air inlet is connected to the outer side of the bearing end cover via an intermediate flange.

[0013] Optionally, an intermediate flange cover is provided on the conical air duct.

[0014] Optionally, the automated oil filling assembly includes an oil reservoir and a connecting ring. The connecting ring is located on the drive connection end. A slip ring is slidably mounted on the connecting ring. The slip ring is connected to the connecting ring via an elastic element. The connecting ring is provided with two or more inclined guide blocks. A push block is slidably mounted on the inclined surface of the inclined guide block. The push block is connected to the inclined guide block via an elastic element. The oil reservoir is located inside the conical air duct. The oil reservoir has an oil storage chamber and a block channel. The oil storage chamber stores lubricating oil. The bottom wall of the oil storage chamber is connected to the top wall of the block channel through an oil drain channel one. The bottom wall of the block channel is connected to the bottom wall of the oil reservoir through an oil drain channel two. An oil conveying component is slidably installed on the inner wall of the block channel. The oil conveying component extends to the outside of the oil reservoir and has a through hole. The oil conveying component is connected to the inner wall of the block channel through an elastic element three. A connecting pipe is installed between the bottom wall of the oil reservoir and one of the bearing assemblies. The upper end of the connecting pipe is connected to the oil drain channel two, and the lower end of the connecting pipe is connected to the oil filling hole of the bearing seat.

[0015] The present invention has the following beneficial effects: The device features a simple structure and no contact friction between the conical fan blades and the conical air chamber, resulting in significantly lower power consumption compared to existing air compressors of the same specifications, leading to substantial energy savings. The gap between the conical fan blades and the inner wall of the conical compression chamber can be steplessly adjusted using the bearing end cap nut, ensuring an ideal gap of 0.10-0.30mm. Because this gap is guaranteed, air compression requires no lubricating oil for sealing, eliminating the need for auxiliary systems and greatly reducing manufacturing and operating costs, thus lowering the failure rate. The conical fan blades are characterized by adjustable airflow at different speeds, allowing for more precise use and better energy efficiency. Both manufacturing and operating costs are significantly lower than other models.

[0016] Through the coordinated operation of the connecting ring, slip ring, push block, oil storage box, and oil conveying components, when the fan shaft and drive connection end are in a stopped state, the lubricating oil in the oil storage chamber can automatically enter the through hole for temporary storage. When the fan shaft and drive connection end start to rotate, the push block pushes the slip ring to move under the action of centrifugal force, causing the oil conveying components to switch the connection state of oil discharge channel one and oil discharge channel two, thereby transporting the pre-stored quantitative lubricating oil in the through hole to the bearing seat oil filling hole through the connecting pipe, automatically lubricating the bearing assembly and fan shaft. When the equipment stops again, the oil conveying components automatically reset and complete the quantitative oil storage again, realizing automatic quantitative oil filling every time it starts and stops, eliminating the need for frequent manual oil filling, improving the timeliness and stability of lubrication, avoiding bearing wear and lubricating oil waste caused by insufficient lubrication or excessive oil filling, while reducing maintenance workload and improving the operational reliability and service life of the air compressor. Attached Figure Description

[0017] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0018] Figure 1 This is a front view of an axial flow vortex air compressor according to the present invention; Figure 2 This is a left view of an axial flow vortex air compressor according to the present invention; Figure 3 This is a right view of an axial flow vortex air compressor according to the present invention; Figure 4 This is the present invention. Figure 1 A cross-sectional view along the AA direction; Figure 5 This is the present invention. Figure 4 Enlarged view of point B in the middle; Figure 6 This is the present invention. Figure 4 Enlarged view of point D in the middle; Figure 7 This is a schematic diagram of one embodiment of the automated oiling component in this invention; Figure 8 This is the present invention. Figure 7 Cross-sectional view of the central oil storage box; Figure 9 This is the present invention. Figure 8 A schematic diagram of the structure of the oil conveying component.

[0019] Reference numerals: 1. Conical air duct; 2. Bearing end cover one; 3. Bearing assembly; 4. Bearing end cover nut; 5. Bearing end cover two; 6. Drive connection end; 7. Bearing housing oil filling hole; 8. Connecting pipe; 9. Fan shaft; 10. Conical fan blade; 11. Connecting ring; 12. Elastic element one; 13. Slip ring; 14. Push block; 15. Elastic element two; 16. Inclined guide block; 17. Oil storage box; 171. Oil storage chamber; 172. Block channel; 173. Oil drain channel one; 174. Oil drain channel two; 18. Oil conveying component; 19. Through hole; 20. Elastic element three; 21. Elastic retaining ring; 23. Intermediate flange body; 24. Intermediate flange cover; 25. Air inlet; 6. Sensor. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] like Figures 1-6 As shown, an axial flow vortex cone air compressor includes a cone air casing 1, a bearing end cover 1 2, a bearing assembly 3, a bearing end cover nut 4, a bearing end cover 2 5, a drive connection end 6, a fan shaft 9, and a cone fan blade 10. The cone air casing 1 forms a cone-shaped compression chamber that extends axially inside. Bearing end cap 1 2 and bearing end cap 2 5 are respectively set at both ends of the conical air duct 1. Two bearing assemblies 3 are respectively set on bearing end cap 1 2 and bearing end cap 2 5. Both bearing assemblies 3 support the fan shaft 9. The fan shaft 9 is set inside the conical air duct 1. The conical fan blades 10 are set on the outer periphery of the fan shaft 9 and located in the conical compression cavity. Multiple conical fan blades 10 are arranged along the axial direction of the fan shaft 9. The outer diameter of the conical fan blades 10 gradually changes along the axial direction of the fan shaft 9 and matches the taper of the conical compression cavity. The bearing end cap nut 4 is rotatably mounted on the bearing end cap 2. The bearing end cap nut 4 abuts against one of the bearing assemblies 3. A radial gap of 0.10mm-0.30mm is formed between the outer edge of the conical fan blade 10 and the inner wall of the conical compression chamber. The drive connection end 6 is connected to the fan blade shaft 9, and the drive connection end 6 is connected to the motor.

[0024] Based on the above scheme, in some implementations, the conical compression chamber gradually narrows in diameter from the inlet end to the outlet end.

[0025] In one optional embodiment of the present invention, the electric motor is an AC variable frequency motor or a hydraulic motor. By setting different types of power sources, the drive mode can be selected according to different operating conditions, thereby improving the applicability of the equipment.

[0026] In some preferred embodiments, an air intake filter is provided at the air inlet end of the conical air duct 1. The air intake filter is used to filter the air entering the conical air duct 1, reducing the amount of dust and impurities entering the conical compression chamber.

[0027] An elastic retaining ring 21 is provided inside the bearing end cover 25. The elastic retaining ring 21 is used to axially limit the component and prevent the component from moving axially during operation.

[0028] A sleeve is provided inside the bearing end cover 2. The sleeve is used to improve the assembly stability of the component.

[0029] Alternatively, multiple sensors can be installed on the outer wall of the conical duct 1. For example, these can be temperature sensors and wind pressure sensors to collect temperature and wind pressure change data at each local location.

[0030] An air inlet 25 is connected to the outer side of the bearing end cover 25 via an intermediate flange 23.

[0031] An intermediate flange cover 24 is installed on the cone-shaped air duct 1.

[0032] Implementation process: Before use, adjust the bearing end cap nut 4 by rotating it according to the equipment assembly precision and actual usage requirements. The bearing end cap nut 4 can push the position of the left bearing assembly 3, thereby changing the axial positioning position of the fan blade shaft 9 inside the conical fan casing 1, thus fine-tuning the radial clearance between the outer edge of the conical fan blade 10 and the inner wall of the conical fan casing 1, keeping this clearance within the range of 0.10mm to 0.30mm. This clearance can prevent contact friction between the conical fan blade 10 and the conical fan casing 1, and also reduce airflow leakage from the outer edge of the blade, ensuring compression efficiency.

[0033] When the equipment starts, the motor drives the fan shaft 9 to rotate via the drive connection end 6. The fan shaft 9 rotates stably under the support of the bearing assembly 3, which restricts the radial wobble of the fan shaft 9, ensuring that the fan shaft 9 always maintains good coaxiality with the conical fan casing 1. After the fan shaft 9 rotates, the conical fan blades 10, fixed to the outer circumference of the fan shaft 9, rotate synchronously at high speed.

[0034] Air enters the conical compression chamber from the inlet end of the conical fan duct 1. Because the conical fan blades 10 have a guiding and pushing effect similar to a helical rotor, their rotation generates an axial thrust on the air entering the conical fan duct 1, causing the air to flow continuously along the axial direction of the conical fan duct 1. Simultaneously, the conical fan blades 10 also generate tangential acceleration on the air, causing the airflow to form a swirling state within the conical compression chamber, improving the continuity of the airflow into subsequent compression zones.

[0035] As air flows axially along the conical fan duct 1, the cross-section of the inner cavity of the conical fan duct 1 gradually changes, and the shape of the conical fan blade 10 corresponds to the inner wall of the conical fan duct 1. Under the continuous pushing of the conical fan blade 10, air enters the gradually contracting compression space. The space through which the airflow can pass gradually decreases, forcing air molecules to clump together, thus achieving physical compression. This compression process does not rely on intermittent piston compression, nor on oil film sealing, but rather on the high-speed rotation and pushing of the conical fan blade 10 and the conical space constraint of the conical fan duct 1 to achieve continuous compression.

[0036] Because a tiny gap of 0.10mm-0.30mm is maintained between the outer edge of the conical fan blade 10 and the inner wall of the conical air cylinder 1, the conical fan blade 10 will not directly rub against the conical air cylinder 1 during high-speed rotation. Therefore, there is no need for sealing and lubrication in the compression chamber using lubricating oil. This avoids the introduction of oil molecules into the compressed air, reduces the need for auxiliary systems such as oil-gas separation systems and oil cooling systems, simplifies the overall structure, and reduces manufacturing and maintenance costs.

[0037] When the air supply needs to be adjusted, the rotational speed of the fan shaft 9 can be changed by adjusting the motor. When the rotational speed of the fan shaft 9 increases, the amount of air pushed by the conical fan 10 per unit time increases, and the output air volume increases accordingly; when the rotational speed of the fan shaft 9 decreases, the ability of the conical fan 10 to push air decreases, and the output air volume decreases accordingly. Therefore, this equipment can adjust the air volume according to the actual air demand, avoiding energy waste caused by long-term full-load operation.

[0038] In applications with high dust levels or where high cleanliness of compressed air is required, an intake filter can be installed at the intake end. External air is filtered by the intake filter before entering the conical air duct 1 for compression. This reduces the amount of dust and impurities entering the tiny gap between the conical air duct 1 and the conical fan blades 10, lowers the risk of wear, and improves the cleanliness of the output compressed air.

[0039] This application achieves continuous axial flow compression of air within a conical compression chamber through the cooperation of the conical air duct 1, the fan shaft 9, the conical fan blade 10, and the bearing end cap nut 4; the bearing end cap nut 4 enables precise adjustment of the gap between the conical fan blade 10 and the conical air duct 1; and the non-contact rotational structure between the conical fan blade 10 and the conical air duct 1 reduces mechanical friction and eliminates the need for traditional auxiliary systems such as oil-gas separation and oil cooling, thereby achieving structural simplification, continuous air supply, low maintenance, and energy-saving operation.

[0040] This machine uses an AC inverter motor or a hydraulic motor for stepless control, with a stable air volume of 40m³ / min-65m³ / min and a stable air pressure of 4.5kgf / cm³. 2 about.

[0041] The beneficial effects of implementing this invention are as follows: The device has a simple structure, and there is no contact friction between the conical fan blade 10 and the conical fan casing 1. Therefore, the power consumption is much lower than that of the existing air compressors of the same specifications, resulting in significant energy savings.

[0042] The gap between the conical fan blade 10 and the inner wall of the conical compression chamber can be infinitely adjusted by the bearing end cap nut 4 to ensure an ideal gap of 0.10-0.30mm between the conical fan blade 10 and the inner wall of the conical air cylinder 1.

[0043] Because compression leakage increases significantly when the gap is greater than 0.30 mm, and contact interference is likely to occur when the gap is less than 0.10 mm, the preferred gap is 0.10-0.30 mm.

[0044] Because the gap between the conical fan blade 10 and the inner wall of the conical compression chamber is guaranteed, air compression does not require lubricating oil medium sealing, and all auxiliary systems are eliminated, greatly reducing manufacturing and consumption costs, thus resulting in a lower failure rate.

[0045] Depending on the requirements of the compressed air used, the air intake end can be selected for either air filter precision or filter element.

[0046] The Cone Fan 10 features adjustable airflow at different speeds, allowing for more precise use and better energy efficiency.

[0047] Both manufacturing and operating costs are far lower than other models.

[0048] Regarding the configuration of the automated oiling components, such as Figures 7-9 As shown, the following structure can be adopted: the automatic oil filling component includes an oil storage box 17 and a connecting ring 11. The connecting ring 11 is set on the drive connection end 6. A slip ring 13 is slidably set on the connecting ring 11. The slip ring 13 is connected to the connecting ring 11 through an elastic element 12. Two or more inclined guide blocks 16 are set on the connecting ring 11. A push block 14 is slidably set on the inclined surface of the inclined guide block 16. The push block 14 is connected to the inclined guide block 16 through an elastic element 2 15. The push block 14 can adopt a counterweight structure such as a solid steel block or a tungsten block.

[0049] An oil storage box 17 is installed inside the conical air duct 1. The oil storage box 17 has an oil storage cavity 171 and a block channel 172. The oil storage cavity 171 stores lubricating oil. The bottom wall of the oil storage cavity 171 is connected to the top wall of the block channel 172 through an oil drain channel 173. The bottom wall of the block channel 172 is connected to the bottom wall of the oil storage box 17 through an oil drain channel 2 174. An oil conveying component 18 is slidably installed on the inner wall of the block channel 172. The oil conveying component 18 extends to the outside of the oil storage box 17. The oil conveying component 18 has a through hole 19. The oil conveying component 18 is connected to the inner wall of the block channel 172 through an elastic element 3 20. A connecting pipe 8 is provided between the bottom wall of the oil storage box 17 and one of the bearing assemblies 3. The upper end of the connecting pipe 8 is connected to the oil drain channel 2 174, and the lower end of the connecting pipe 8 is connected to the oil filling hole 7 of the bearing seat.

[0050] Working principle of automated oiling assembly: When the fan shaft 9 and drive connection end 6 do not rotate, the push block 14 does not abut against the slip ring 13, the slip ring 13 abuts against the oil conveying component 18, the elastic element 3 20 is compressed, the through hole 19 on the oil conveying component 18 is connected to the first oil discharge channel 173, the through hole 19 is not connected to the second oil discharge channel 174, and part of the lubricating oil in the oil storage chamber 171 enters the through hole 19 for temporary storage.

[0051] When the fan shaft 9 and drive connection end 6 rotate, the push block 14 moves along the inclined surface of the inclined guide block 16 under the action of centrifugal force, thereby stretching the elastic element 15. After the push block 14 slides to abut against the slip ring 13, it pushes the slip ring 13 to move. The push block 14 extends beyond the inclined guide block 16. The sliding limit structure on the inclined guide block 16 limits the sliding distance of the push block 14 to prevent the push block 14 from disengaging from the inclined guide block 16. The elastic element 12 is stretched, and the oil conveying component 18 is stretched. Under the elongation force of the elastic element 20, the sliding displacement of the slip ring 13 is greater than that of the oil conveying component 18. The oil conveying component 18 and the slip ring 13 disengage to prevent long-term friction between them. The oil conveying component 18 blocks the first oil drain channel 173, and the through hole 19 and the second oil drain channel 174 are connected. The lubricating oil in the through hole 19 passes through the second oil drain channel 174, passes through the connecting pipe 8, and enters the oil filling hole 7 of the bearing housing, thereby automatically lubricating the bearing and the fan blade shaft 9 on the bearing assembly 3.

[0052] When the fan shaft 9 and drive connection end 6 stop rotating, the push block 14 loses centrifugal force and is reset under the action of the elastic element 15. The slip ring 13 is reset under the action of the elastic element 12. The slip ring 13 pushes the oil conveying component 18 to overcome the elastic force of the elastic element 20 and reset. The through hole 19 is reconnected with the oil drain channel 173. Part of the lubricating oil in the oil storage chamber 171 is added to the through hole 19 for temporary storage. The oil conveying component 18 blocks the oil drain channel 174.

[0053] This ensures that lubricating oil is automatically added each time the fan blade shaft 9 and drive connection end 6 rotate and stop rotating.

[0054] The automated oiling component only releases a fixed amount of lubricating oil pre-stored in the through hole 19 when the equipment is started. During continuous operation of the equipment, the oil drain channel 173 is blocked by the oil conveying component 18, so it will not continuously supply oil to the bearing assembly 3, thus avoiding excessive lubricating oil entering the bearing assembly 3, improving lubrication utilization and reducing lubricating oil waste.

[0055] Benefits of automated oiling systems: Through the coordinated operation of the connecting ring 11, slip ring 13, push block 14, oil storage box 17, and oil conveying component 18, when the fan shaft 9 and drive connection end 6 are in a stopped state, the lubricating oil in the oil storage chamber 171 can automatically enter the through hole 19 for temporary storage. When the fan shaft 9 and drive connection end 6 start to rotate, the push block 14 pushes the slip ring 13 to move under the action of centrifugal force, so that the oil conveying component 18 switches the connection state of the first oil discharge channel 173 and the second oil discharge channel 174, thereby transporting the pre-stored quantitative lubricating oil in the through hole 19 to the bearing seat oil filling hole 7 through the connecting pipe 8, so as to automatically lubricate the bearing assembly 3 and the fan shaft 9. When the equipment stops again, the oil conveying component 18 automatically resets and completes quantitative oil storage again, realizing that quantitative oil filling is automatically completed every time the equipment starts and stops, eliminating the need for frequent manual oiling, improving the timeliness and stability of lubrication, avoiding bearing wear and lubricating oil waste caused by insufficient lubrication or excessive oiling, reducing maintenance workload, and improving the operational reliability and service life of the air compressor.

[0056] The components, modules, mechanisms, and devices in this invention that are not described in detail are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An axial-flow scroll compressor, characterized in that, It includes a conical air duct (1), a bearing end cover one (2), a bearing assembly (3), a bearing end cover nut (4), a bearing end cover two (5), a drive connection end (6), a fan shaft (9), and a conical fan blade (10). The conical air duct (1) forms a conical compression cavity that extends axially inside. Bearing end cap 1 (2) and bearing end cap 2 (5) are respectively set at both ends of the conical air duct (1). Two bearing assemblies (3) are respectively set on bearing end cap 1 (2) and bearing end cap 2 (5). Both bearing assemblies (3) support the fan shaft (9). The fan shaft (9) is set inside the conical air duct (1). The conical fan blades (10) are set on the outer periphery of the fan shaft (9) and located in the conical compression cavity. Multiple conical fan blades (10) are arranged along the axial direction of the fan shaft (9). The outer diameter of the conical fan blades (10) gradually changes along the axial direction of the fan shaft (9) and matches the taper of the conical compression cavity. The bearing end cap nut (4) is rotatably mounted on the bearing end cap (2). The bearing end cap nut (4) and one of the bearing assemblies (3) abut against each other. A radial gap of 0.10mm-0.30mm is formed between the outer edge of the conical fan blade (10) and the inner wall of the conical compression chamber. The drive connection end (6) is connected to the fan blade shaft (9), and the drive connection end (6) is connected to the motor. One of the bearing components (3) has a bearing seat oiling hole (7), and the automatic oiling component is connected inside the cone air duct (1).

2. An axial-flow scroll compressor according to claim 1, characterized in that, The conical compression chamber gradually narrows from the inlet end to the outlet end.

3. An axial-flow scroll compressor according to claim 1, characterized in that, The electric motor is either an AC variable frequency motor or a hydraulic motor.

4. An axial-flow scroll compressor according to claim 1, characterized in that, An air intake filter is provided at the air intake end of the cone air duct (1).

5. An axial-flow scroll compressor according to claim 1, characterized in that, An elastic retaining ring (21) is provided inside the bearing end cover 2 (5).

6. An axial-flow scroll compressor according to claim 1, characterized in that, A sleeve is provided inside the bearing end cover (2).

7. An axial-flow scroll compressor according to claim 1, characterized in that, Multiple sensors are installed on the outer wall of the cone-shaped air duct (1).

8. An axial-flow scroll compressor according to claim 1, characterized in that, An air inlet (25) is connected to the outer side of the bearing end cover (25) via an intermediate flange (23).

9. An axial-flow scroll compressor according to claim 8, characterized in that, An intermediate flange cover (24) is installed on the cone-shaped air duct (1).

10. An axial-flow scroll compressor according to any one of claims 1-9, characterized in that, The automated oil filling assembly includes an oil storage box (17) and a connecting ring (11). The connecting ring (11) is set on the drive connection end (6). A slip ring (13) is slidably set on the connecting ring (11). The slip ring (13) is connected to the connecting ring (11) through an elastic element (12). Two or more inclined guide blocks (16) are set on the connecting ring (11). A push block (14) is slidably set on the inclined surface of the inclined guide block (16). The push block (14) is connected to the inclined guide block (16) through an elastic element (2) (15). An oil storage box (17) is installed inside the conical air duct (1). The oil storage box (17) has an oil storage cavity (171) and a block channel (172). The oil storage cavity (171) stores lubricating oil. The bottom wall of the oil storage cavity (171) is connected to the top wall of the block channel (172) through an oil discharge channel one (173). The bottom wall of the block channel (172) is connected to the bottom wall of the oil storage box (17) through an oil discharge channel two (174). An oil conveying device is slidably installed on the inner wall of the block channel (172). The oil conveying component (18) extends to the outside of the oil storage box (17). The oil conveying component (18) has a through hole (19). The oil conveying component (18) is connected to the inner wall of the block channel (172) through the elastic element three (20). A connecting pipe (8) is provided between the bottom wall of the oil storage box (17) and one of the bearing assemblies (3). The upper end of the connecting pipe (8) is connected to the oil drain channel two (174), and the lower end of the connecting pipe (8) is connected to the oil filling hole (7) of the bearing seat.

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