Blade arrangement for a compressor and compressor

Abstract

The utility model discloses a kind of blade device for compressor and compressor, it is related to compressor technical field, the blade device for compressor includes: blade and baffle, the blade can rotate around first direction, along second direction, two sides of the blade are formed with first side surface and second side surface respectively, the first direction and the second direction are perpendicular, at least one of the first side surface and the second side surface is equipped with the baffle, the baffle and the first direction form angle. According to the blade device for compressor of the embodiment of the application, it is favorable to improve the throttling capacity of blade device, it is favorable to reduce the minimum regulating flow when blade device is used to adjust flow, it is favorable to improve the throttling effect of compressor, it is favorable to reduce the probability that large-scale vortex is formed when gas occurs shunt, it is favorable to reduce energy loss when gas occurs shunt, it is favorable to reduce turbulent noise.

Description

Technical Field

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

[0002] In related technologies, existing blade devices have a large minimum regulating flow rate when used to regulate flow, resulting in poor throttling effect. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a blade assembly for a compressor that is advantageous in reducing the minimum regulated flow rate when used for flow regulation, improving the throttling effect of the compressor, reducing the probability of large-scale vortices forming when gas is split, and reducing energy loss during gas splitting.

[0004] This invention also proposes a compressor using the aforementioned blade device.

[0005] According to a first aspect of the present invention, a blade device for a compressor includes: a blade and a baffle plate. The blade is rotatable about a first direction and along a second direction. A first side surface and a second side surface are respectively formed on both sides of the blade. The first direction and the second direction are perpendicular. At least one of the first side surface and the second side surface is provided with the baffle plate. The baffle plate forms an angle with the first direction.

[0006] According to the embodiments of this application, the blade device for a compressor, by providing a baffle on at least one side surface of the blade along the second direction, is beneficial to improving the throttling capability of the blade device, reducing the minimum regulating flow when the blade device is used to regulate the flow, improving the throttling effect of the compressor, reducing the probability of forming large-scale vortices when gas is split, reducing energy loss when gas is split, and reducing turbulent noise.

[0007] According to some embodiments of the present invention, the baffle plate is perpendicular to the first direction.

[0008] According to some embodiments of the present invention, along the first direction, the blade has a root end and a tip end, the distance between the baffle and the root end is L1mm, and the distance between the baffle and the tip end is L2mm, satisfying the relationship: L2mm≤L1mm.

[0009] According to some embodiments of the present invention, along the first direction, the surface of the baffle plate facing the blade root end is a baffle surface, and the baffle surface is an arc-shaped convex surface protruding towards the blade root end.

[0010] According to some embodiments of this utility model, the flow-blocking surface is a smooth surface.

[0011] According to some embodiments of the present invention, along a third direction, the blade has a first side edge and a second side edge, both of which are connected between the blade root and the blade tip. The deflector extends along the third direction to at least one of the first side edge and the second side edge, and the third direction intersects both the first direction and the second direction.

[0012] According to some embodiments of the present invention, the first direction, the second direction, and the third direction are perpendicular to each other.

[0013] According to some embodiments of the present invention, the distance between the first side edge and the second side edge gradually decreases from the leaf root end to the leaf tip.

[0014] According to some embodiments of the present invention, the blade device further includes a connecting shaft, wherein the connecting shaft and the blade are arranged and fixedly connected along the first direction.

[0015] According to some embodiments of the present invention, at least one of the first side surface and the second side surface is provided with a baffle plate group, the baffle plate group includes a plurality of the baffle plates, and the plurality of the baffle plates of the baffle plate group are arranged sequentially at intervals along the first direction.

[0016] According to some embodiments of the present invention, the spacing between any two adjacent baffles in the plurality of baffles in the baffle group is equal.

[0017] The compressor according to a second aspect of the present invention includes the blade assembly for the compressor described in the above embodiments.

[0018] According to some embodiments of the present invention, the compressor has an air inlet, the blade assembly is rotatably disposed on the compressor along the first direction, and the blade is located within the air inlet.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a blade assembly according to an embodiment of this application; Figure 2 This is another schematic diagram of the blade assembly according to an embodiment of this application; Figure 3 This is a schematic diagram of a compressor when the blade assembly closes the intake passage according to an embodiment of this application; Figure 4 yes Figure 3 Schematic diagram of the cross section at point AA; Figure 5 This is a schematic diagram of a compressor when the blade assembly rotates to open the air intake portion according to an embodiment of this application. Figure 6 yes Figure 5 Schematic diagram of cross-section at point BB.

[0021] Figure label: Compressor 1, Blade assembly 100, Leaf blade 10, first lateral surface 11, second lateral surface 12, first lateral edge 13, second lateral edge 14, leaf root tip 15, leaf tip 16. Flow deflector 20, flow deflector surface 21, Connecting shaft 30, 200mm air intake Linkage mechanism 300, Drive mechanism 400. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying 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 with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] The following is for reference. Figures 1-6 The blade assembly 100 according to an embodiment of the present invention is described. The blade assembly 100 can be applied to a compressor 1.

[0024] According to the first aspect of the present invention, a blade assembly 100 for a compressor 1, such as... Figures 1-6As shown, the blade assembly 100 may include: a blade 10 and a baffle 20. The blade 10 is rotatable about a first direction. Along a second direction, a first side surface 11 and a second side surface 12 are formed on both sides of the blade 10, respectively. The first direction and the second direction are perpendicular. At least one of the first side surface 11 and the second side surface 12 is provided with a baffle 20. The baffle 20 forms an angle with the first direction.

[0025] It should be noted that the minimum regulating flow rate of the existing blade device is relatively large when used to regulate flow, and the throttling effect of the blade device is poor.

[0026] Based on this, this application provides a blade assembly 100 for a compressor 1, wherein the blades 10 are rotatable about a first direction, and the blades 10 are rotatably disposed on the compressor 1. When the blade assembly 100 is in such a state... Figure 1 When setting the direction, the first direction is Figure 1 In the X direction. Along the second direction, a first side surface 11 and a second side surface 12 can be formed on both sides of the blade 10, and the first side surface 11 and the second side surface 12 can be opposite each other along the second direction. When the blade assembly 100 is as follows. Figure 2 When setting the direction, the second direction is Figure 2 In the Z-direction of the blade 10, the first direction can be perpendicular to the second direction. At least one of the first side surface 11 and the second side surface 12 can be provided with a baffle 20. The first side surface 11 can be provided with a baffle 20, or the second side surface 12 can be provided with a baffle 20, or both the first and second side surfaces 11 and 12 can be provided with baffles 20. This embodiment of the application uses the example of both the first and second side surfaces 11 and 12 being provided with baffles 20 for illustration. The baffle 20 can form an angle with the first direction, which can be a right angle, an acute angle, or an obtuse angle. That is, the baffle 20 can protrude from the first side surface 11 or the second side surface 12. When gas flows on the first side surface 11 or the second side surface 12 of the blade 10, the baffle 20 can impede the gas flow and can deflect the gas.

[0027] As an example, when the blade assembly 100 operates in the airflow, the surface of the blade 10 that receives gas impact is the suction surface, and the surface opposite the suction surface along the second direction is the pressure surface. One of the first side surface 11 and the second side surface 12 can be configured as a pressure surface, and the other of the first side surface 11 and the second side surface 12 can be configured as a suction surface. In this embodiment, the first side surface 11 is configured as a suction surface and the second side surface 12 is configured as a pressure surface, that is, when the blade assembly 100 operates in the airflow, the first side surface 11 receives gas impact.

[0028] As an example, compressor 1 may have an inlet duct 200. When compressor 1 adjusts the intake airflow by setting blade devices 100, the blade devices 100 may be located at the inlet of the inlet duct 200. Multiple blade devices 100 may be arranged around the central axis of the inlet duct 200 in the circumferential direction. By synchronously rotating multiple blade devices 100, the effect of adjusting the gas flow rate entering the inlet duct 200 of compressor 1 can be achieved. Along a first direction, blades 10 may have a root end 15 and a tip end 16. When multiple blade devices 100 are arranged around the central axis of the inlet duct 200 in the circumferential direction, the tips 16 of the multiple blades 10 may be arranged adjacent to each other.

[0029] like Figure 3 and Figure 4 As shown, when the second direction is parallel or approximately parallel to the extension direction of the central axis of the intake duct 200, and the first side surface 11 is located on the side of the blade 10 facing the outside of the intake duct 200, the multiple blade devices 100 can be used to close the inlet of the intake duct 200. Due to the manufacturing method and structural strength of the blade 10, the width dimension of the blade tip 16 is greater than 0 mm. The multiple blade devices 100 can jointly define a central hole at the center of the intake duct 200, and the inlet of the intake duct 200 cannot be completely sealed. When gas flows into the intake duct 200, the multiple blade devices 100 can impede the gas flow. Some gas can be diverted and flow towards the blade tip 16 of the blade 10 along the first direction. The baffle 20 can impede the gas flow, which helps to reduce the probability of gas flowing towards the blade tip 16 of the blade 10 flowing into the central hole, which helps to reduce the minimum regulating flow when the blade device 100 is used to regulate the flow rate, and helps to improve the throttling effect of the compressor 1.

[0030] like Figure 5 and Figure 6 As shown, when multiple blade devices 100 rotate synchronously to open the intake duct 200, gas can flow into the intake duct 200 from the gap between any two adjacent blade devices 100, and the gas can flow on the first side surface 11 and the second side surface 12. When the intake duct 200 is opened to a smaller degree, that is, when the rotation angle of the multiple blade devices 100 is smaller, the gas entering the intake duct 200 is easily separated from the first side surface 11 and the second side surface 12. Some of the gas can be diverted and flow towards the baffle plate 20 in the first direction. The baffle plate 20 can play a guiding role. The gas flowing towards the baffle plate 20 in the first direction can flow along the surface of the baffle plate 20 and flow back to the mainstream direction, which helps to reduce the probability of gas forming large-scale vortices, reduce turbulence noise, and reduce gas energy loss.

[0031] In this embodiment of the application, by setting the blade 10 to have a baffle 20 on at least one side surface along the second direction, it is beneficial to improve the throttling capability of the blade device 100, reduce the minimum regulating flow of the blade device 100 when used to regulate the flow, improve the throttling effect of the compressor 1, reduce the probability of forming large-scale vortices when the gas is split, reduce the energy loss when the gas is split, and reduce turbulent noise.

[0032] In some embodiments of this utility model, such as Figure 1 As shown, the deflector 20 is perpendicular to the first direction.

[0033] The baffle 20 can be perpendicular to the first direction, that is, the baffle 20 can be perpendicular to the extension direction of the rotation axis of the blade 10. This is beneficial to ensure that the baffle 20 is always parallel to the central axis of the intake duct 200 when the blade assembly 100 rotates at any angle. Furthermore, when the baffle 20 is used to obstruct the flow of gas along the first direction toward the blade tip 16 of the blade 10, it increases the contact area between the baffle 20 and the gas flowing along the first direction, thus improving the effect of the baffle 20 in obstructing gas flow. When the baffle 20 is used to guide the gas flowing toward the baffle 20 along the first direction back to the mainstream direction, it further increases the contact area between the baffle 20 and the gas flowing along the first direction, thereby improving the efficiency of the baffle 20 in guiding the flow.

[0034] By setting the baffle 20 perpendicular to the first direction, it is beneficial to further achieve the effect of the baffle 20 in obstructing the flow of gas to the blade tip 16. It is also beneficial to better guide the gas back to the mainstream direction when the gas is split. This is beneficial to further reduce the energy loss of the gas, further reduce the probability of forming large-scale vortices when the gas is split, and further reduce turbulence noise.

[0035] In some embodiments of this utility model, such as Figure 1 As shown, along the first direction, the blade 10 has a root end 15 and a tip end 16. The distance between the baffle 20 and the root end 15 is L1mm, and the distance between the baffle 20 and the tip end 16 is L2mm, satisfying the relationship: L2mm≤L1mm.

[0036] Along the first direction, the blade 10 may have a root end 15 and a tip end 16, which may be arranged opposite to each other along the first direction. When the blade assembly 100 is installed in the compressor 1, the root end 15 may be the end of the blade 10 near the inner wall of the inlet duct 200, and the tip end 16 may be the end of the blade 10 near the central axis of the inlet duct 200. A baffle 20 may be disposed between the root end 15 and the tip end 16, with a spacing of L1mm between the baffle 20 and the root end 15, and a spacing of L2mm between the baffle 20 and the tip end 16, satisfying the relationship: L2mm≤L1mm. The distance between the baffle 20 and the blade tip 16 can be less than or equal to the distance between the baffle 20 and the blade root 15. That is, the baffle 20 can be located on the side of the blade 10 closer to the blade tip 16 along the first direction. This helps to reduce the flow rate of gas flowing from the side of the baffle 20 facing the blade tip 16 along the first direction into the central hole. This helps to further reduce the minimum regulating flow rate of the blade device 100 when used to regulate the flow rate. This helps to further improve the throttling effect of the compressor 1.

[0037] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, along the first direction, the surface of the baffle plate 20 facing the blade root end 15 is the baffle surface 21, which is an arc-shaped convex surface protruding towards the blade root end 15.

[0038] Along the first direction, the surface of the baffle 20 facing the blade root 15 can be a baffle surface 21. Gas flowing along the first direction can flow toward the baffle surface 21, which can prevent the gas from continuing to flow along the first direction. The baffle surface 21 can be constructed as an arc-shaped convex surface, which protrudes toward the blade root 15. The baffle surface 21 can guide the gas flowing onto it. By setting the baffle surface 21 as an arc-shaped convex surface, it can better guide the gas flowing along the first direction to the mainstream direction of the gas, which is beneficial to improving the guiding capacity of the baffle surface 21, reducing the impact between the gas and the baffle surface 21, improving the stability of the gas flow, further reducing the probability of turbulence, further reducing turbulence noise, and extending the service life of the baffle 20.

[0039] In some embodiments of this utility model, the flow-blocking surface 21 is a smooth surface.

[0040] By setting the baffle surface 21 to be a smooth surface, it is beneficial to reduce the frictional resistance when the gas flows through the baffle surface 21, to allow the gas to flow more smoothly along the baffle surface 21, to reduce the probability of eddies caused by the unevenness of the baffle surface 21, to further reduce the energy loss of the gas, and to further reduce turbulence noise.

[0041] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, along the third direction, the blade 10 has a first side edge 13 and a second side edge 14, both of which are connected between the blade root end 15 and the blade tip 16. The deflector 20 extends along the third direction to at least one of the first side edge 13 and the second side edge 14, and the third direction intersects with both the first and second directions.

[0042] Along a third direction, the blade 10 may have a first side edge 13 and a second side edge 14, the first side edge 13 and the second side edge 14 may be arranged opposite to each other along the third direction, when the blade assembly 100 is as follows Figure 1 When setting the direction, the third direction is... Figure 1 The Y-direction and the third direction intersect with both the first and second directions. The first side edge 13 and the second side edge 14 can both be connected between the leaf root end 15 and the leaf tip 16. As an example, the first side edge 13 can be connected to one side of the first side surface 11 along the third direction and the second side surface 12 along the third direction, respectively. The second side edge 14 can be connected to the other side of the first side surface 11 along the third direction and the other side of the second side surface 12 along the third direction, respectively. The baffle 20 can extend along a third direction to at least one of the first side edge 13 and the second side edge 14. The baffle 20 can extend along a third direction to the first side edge 13, or the baffle 20 can extend along a third direction to the second side edge 14, or the baffle 20 can extend along a third direction to the first side edge 13 and the second side edge 14. In this embodiment of the application, the baffle 20 is extended along a third direction to the first side edge 13 and the second side edge 14 as an example. This is beneficial to increase the flow blocking range of the baffle 20 along the third direction, to further increase the contact area between the baffle 20 and the gas flowing along the first direction, to further reduce the probability of the gas flowing along the first direction flowing to the center hole of the intake duct 200, and to further improve the throttling effect of the compressor 1.

[0043] In some embodiments of this utility model, the first direction, the second direction, and the third direction are perpendicular to each other.

[0044] By setting the first direction, the second direction, and the third direction to be perpendicular to each other, it is beneficial for the flow-blocking surface 21 to accept the positive impact of the gas flowing towards the flow-blocking plate 20 along the first direction, which helps to reduce the probability of gas separation on the flow-blocking surface 21, further enhances the effect of the flow-blocking plate 20 in hindering gas flow, and further improves the flow-guiding capacity of the flow-blocking surface 21.

[0045] In some embodiments of this utility model, the distance between the first side edge 13 and the second side edge 14 gradually decreases from the leaf root end 15 to the leaf tip 16.

[0046] Along the first direction, from the blade root 15 to the blade tip 16, the distance between the first side edge 13 and the second edge gradually decreases, meaning the width of the blade 10 gradually decreases along the third direction, and the cross-sectional shape of the blade 10 can be fan-shaped or similar. When the blade assembly 100 rotates, the blade tip 16 needs to withstand a large centrifugal force and aerodynamic load. The blade root 15 can be connected to the compressor 1, and the blade root 15 needs to bear the weight and torque of the entire blade 10, thus requiring higher strength. By setting the distance between the first side edge 13 and the second side edge 14 to gradually decrease, while meeting the load-bearing requirements of the blade root 15, the weight of the blade tip 16 can be reduced to decrease the centrifugal force borne by the blade tip 16, which helps to reduce the risk of structural fatigue of the blade 10 and further extend the service life of the blade assembly 100.

[0047] As an example, the width dimension of the blade 10 near the blade tip 16 is reduced, and the gas is prone to stall and separation near the blade tip 16. By placing the baffle 20 on the side of the blade 10 closer to the blade tip 16 along the first direction, the baffle 20 can guide the diverted gas back to the main flow direction, which helps to reduce gas loss.

[0048] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the blade assembly 100 may further include a connecting shaft 30, wherein the connecting shaft 30 and the blade 10 are arranged and fixedly connected along a first direction.

[0049] The connecting shaft 30 can be arranged along the first direction with the blade 10. The connecting shaft 30 can be connected to the blade 10 by welding. The connecting shaft 30 and the blade 10 can be integrally formed. The connecting shaft 30 can rotate around the first direction. The rotation center of the connecting shaft 30 can be collinear with the rotation center of the blade 10, so that the connecting shaft 30 and the blade 10 can rotate synchronously.

[0050] In some embodiments of this utility model, at least one of the first side surface 11 and the second side surface 12 is provided with a baffle plate group, the baffle plate group includes a plurality of baffle plates 20, and the plurality of baffle plates 20 of the baffle plate group are arranged sequentially at intervals along the first direction.

[0051] At least one of the first side surface 11 and the second side surface 12 may be provided with a baffle plate group. The first side surface 11 may be provided with a baffle plate group, or the second side surface 12 may be provided with a baffle plate group, or both the first side surface 11 and the second side surface 12 may be provided with baffle plate groups. Multiple baffle plates 20 of the baffle plate group may be arranged sequentially along the first direction, and the multiple baffle plates 20 may be spaced apart. The distance from each baffle plate 20 to the blade tip 16 may be less than or equal to the distance from the corresponding baffle plate 20 to the blade root 15. By providing multiple baffle plates 20, the probability of gradually hindering the flow of gas along the first direction toward the blade tip 16 can be achieved, which is beneficial to further enhance the throttling effect of the compressor 1.

[0052] In some embodiments of this utility model, the spacing between any two adjacent baffles 20 in the baffle group is equal.

[0053] The spacing between any two adjacent baffles 20 in the baffle group can be equal, that is, the multiple baffles 20 can be evenly arranged on the blade 10, which helps to reduce the probability of turbulence in the gas flowing along the first direction and further reduce the energy loss of the gas.

[0054] According to a second aspect of the present invention, the compressor 1 includes the blade assembly 100 for the compressor 1 described in the above embodiments.

[0055] According to the embodiments of this application, the compressor 1 using the blade device 100 in the above embodiments is beneficial to improving the throttling effect of the compressor 1, reducing the minimum adjustable flow rate of the compressor 1, improving the unloading capacity of the compressor 1, reducing the probability of forming large-scale vortices when gas is split, reducing energy loss when gas is split, and reducing turbulent noise.

[0056] In some embodiments of the present invention, the compressor 1 has an air inlet 200, the blade assembly 100 is rotatably disposed on the compressor 1 along a first direction, and the blade 10 is located within the air inlet 200.

[0057] The compressor 1 may have an air inlet 200, and the blade assembly 100 may be located at the inlet of the air inlet 200 of the compressor 1. The blade assembly 100 is rotatably mounted on the compressor 1 in a first direction. There may be multiple blade assemblies 100, which may be arranged around the central axis of the air inlet 200 in the circumference of the air inlet 200. By synchronously rotating multiple blade assemblies 100, the flow rate of gas entering the air inlet 200 of the compressor 1 can be adjusted.

[0058] As an example, compressor 1 may have a drive mechanism 400 and a linkage mechanism 300. The connecting shaft 30 may pass through the side wall of the intake duct 200 and be connected to the linkage mechanism 300. Compressor 1 may drive the linkage mechanism 300 to work. The linkage mechanism 300 may drive the connecting shaft 30 to rotate so that the blade assembly 100 rotates.

[0059] As an example, when the linkage mechanism 300 drives the blade assembly 100 to rotate so that the second direction is parallel or approximately parallel to the extension direction of the central axis of the inlet duct 200, multiple blade assemblies 100 are used to close the inlet of the inlet duct 200. The baffle 20 can block the gas flowing along the first direction from flowing to the central hole of the inlet duct 200, which helps to reduce the flow rate of gas into the compressor 1 when the inlet duct 200 is closed. When the linkage mechanism 300 drives the blade assembly 100 to rotate so that the inlet duct 200 is partially opened and the opening degree is small, the gas flowing through the baffle surface 21 can flow back to the mainstream direction of the gas, which helps to improve the adhesion of the gas on the blades 10, reduces the probability of gas separation from the blades 10, improves the control capability of the blade assembly 100 over the gas, and reduces the gas flow loss.

[0060] Other configurations and operations of the blade assembly 100 and compressor 1 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A blade assembly for a compressor, characterized in that, include: The blade (10) is rotatable about a first direction and along a second direction. A first side surface (11) and a second side surface (12) are formed on both sides of the blade (10). The first direction and the second direction are perpendicular. A deflector (20) is provided on at least one of the first side surface (11) and the second side surface (12), and the deflector (20) forms an angle with the first direction.

2. The blade assembly for a compressor according to claim 1, characterized in that, The deflector (20) is perpendicular to the first direction.

3. The blade assembly for a compressor according to claim 1, characterized in that, Along the first direction, the blade (10) has a root end (15) and a tip end (16), the distance between the baffle (20) and the root end (15) is L1mm, and the distance between the baffle (20) and the tip end (16) is L2mm, satisfying the relationship: L2mm≤L1mm.

4. The blade assembly for a compressor according to claim 3, characterized in that, Along the first direction, the surface of the baffle plate (20) facing the blade root end (15) is a baffle surface (21), and the baffle surface (21) is an arc-shaped convex surface protruding towards the blade root end (15).

5. The blade assembly for a compressor according to claim 4, characterized in that, The flow-blocking surface (21) is a smooth surface.

6. The blade assembly for a compressor according to claim 3, characterized in that, Along a third direction, the blade (10) has a first side edge (13) and a second side edge (14), both of which are connected between the blade root end (15) and the blade tip (16). The deflector (20) extends along the third direction to at least one of the first side edge (13) and the second side edge (14), and the third direction intersects both the first direction and the second direction.

7. The blade assembly for a compressor according to claim 6, characterized in that, The first direction, the second direction, and the third direction are perpendicular to each other.

8. The blade assembly for a compressor according to claim 6, characterized in that, The distance between the first side edge (13) and the second side edge (14) gradually decreases from the leaf root end (15) to the leaf tip (16).

9. The blade assembly for a compressor according to claim 1, characterized in that, The blade assembly (100) further includes a connecting shaft (30), wherein the connecting shaft (30) and the blade (10) are arranged and fixedly connected along the first direction.

10. The blade assembly for a compressor according to any one of claims 1-9, characterized in that, At least one of the first side surface (11) and the second side surface (12) is provided with a baffle plate group, the baffle plate group including a plurality of baffle plates (20), the plurality of baffle plates (20) of the baffle plate group being arranged sequentially at intervals along the first direction.

11. The blade assembly for a compressor according to claim 10, characterized in that, The spacing between any two adjacent baffles (20) in the baffle group is equal.

12. A compressor, characterized in that, Includes a blade assembly (100) for a compressor (1) according to any one of claims 1-11.

13. The compressor according to claim 12, characterized in that, The compressor (1) has an air inlet (200), the blade assembly (100) is rotatably disposed on the compressor (1) along the first direction, and the blade (10) is located in the air inlet (200).

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