Rotor assembly and compressor

Abstract

The application provides a rotor assembly and a compressor. The rotor assembly comprises a rotor core, an end plate and a plurality of flow guide components. The end plate is arranged on one side of the rotor core in the axial direction. The plurality of flow guide components are connected with the end plate and arranged along the circumferential direction of the end plate. At least one of the plurality of flow guide components is arranged to be inclined relative to the axial direction of the rotor core.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a rotor assembly and a compressor. Background Technology

[0002] Currently, in related technologies, compressors include rotor assemblies. When the compressor is working, the refrigerant drives the gas flow to exhaust the compressor. The gas is mixed with atomized oil. After passing through the flow holes on the rotor core, the flow rate decreases, causing a large amount of atomized oil to accumulate at the upper end of the rotor core. Some oil is discharged from the compressor with the gas, which in turn leads to an increase in the amount of oil removed from the compressor, a decrease in the amount of oil returned, and a reduction in the lubrication effect. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] Therefore, a first aspect of the present invention provides a rotor assembly.

[0005] A second aspect of the present invention provides a compressor.

[0006] In view of this, a first aspect of the present invention provides a rotor assembly including a rotor core, an end plate, and a plurality of flow guiding components. The end plate is disposed on one side of the rotor core in the axial direction; the plurality of flow guiding components are connected to the end plate and arranged circumferentially along the end plate, and at least one of the plurality of flow guiding components is arranged obliquely relative to the axial direction of the rotor core.

[0007] The rotor assembly provided by this invention includes a rotor core, which enhances magnetic induction intensity and increases magnetic flux density during operation, thereby improving efficiency. An end plate is provided on one axial side of the rotor core to prevent exposure and protect it. The end plate also serves to secure the flow guiding components, facilitating assembly during production. The rotor assembly also includes multiple flow guiding components connected to the end plate and arranged circumferentially. These components guide the flow of the oil-gas mixture. When the compressor operates, the oil-gas mixture flows out through the flow holes in the rotor core. Since there is space above the rotor core and below the compressor outlet, the multiple flow guiding components guide the oil-gas mixture flowing out of the flow holes, accelerating its flow and preventing accumulation. At least one of the multiple flow guiding components is arranged axially inclined relative to the rotor core. During the flow guiding process of the oil-gas mixture, the inclined arrangement of the flow guiding component can adjust the pressure at the upper end of the rotor core, thereby controlling the pressure difference between the upper part of the rotor core and the flow passage of the rotor core. This, in turn, regulates the flow rate of oil and gas, prevents the accumulation of oil and gas at the compressor outlet, reduces the loss of condensed oil with the gas discharge, reduces the amount of oil discharged by the compressor, increases the oil return rate of the compressor, and thus improves the smoothness of compressor operation.

[0008] Specifically, the tilt angle of at least one flow guide component can be adjusted according to the actual production needs of the compressor. At the same time, the tilt direction of at least one tilting flow guide component is not fixed. It can be set to tilt inward or outward according to the exhaust situation of the compressor.

[0009] In addition, the rotor assembly in the above-mentioned technical solution provided by the present invention may also have the following additional technical features:

[0010] In some technical solutions of the present invention, optionally, the plurality of flow guiding components include a first flow guiding plate, a first side of the first flow guiding plate being connected to an end plate, and a second side of the first flow guiding plate extending obliquely in a direction away from the axis of the rotor core.

[0011] In this technical solution, multiple flow guiding components include a first flow guiding plate. A first side of the first flow guiding plate is connected to an end plate, and a second side of the first flow guiding plate extends obliquely away from the axis of the rotor core. The first flow guiding plate guides the gas flow, causing it to accelerate upwards along the axial direction. Because the second side of the first flow guiding plate extends obliquely away from the axis of the rotor core, the gas flows faster under the influence of the first flow guiding plate, creating a negative pressure above the rotor core. Consequently, the pressure inside the flow passage of the rotor core is greater than the pressure at the upper end of the rotor core, creating a pressure difference between the upper end of the rotor core and the flow passage. Under the action of this pressure difference, the oil-gas mixture accelerates and flows upwards along the flow passage of the rotor core. Driven by the pressure difference, the flow area within the rotor assembly increases, the oil-gas flow becomes smoother, and the gas guiding efficiency increases. The rapid flow of oil and gas reduces gas accumulation, thereby reducing the amount of atomized oil condensed and carried out of the compressor by the airflow, thus improving the compressor's oil return rate.

[0012] In some technical solutions of the present invention, optionally, the included angle between the first guide plate and the end plate is greater than or equal to 60 degrees and less than 90 degrees.

[0013] In this technical solution, the angle between the first guide plate and the end plate is greater than or equal to 60 degrees and less than 90 degrees. Since the tilt angle of the first guide plate is limited to this range, the manufacturing process of the first guide plate can be simplified, facilitating the production and installation of the guide components. This limitation also prevents an excessively large negative pressure zone from forming at the upper end of the rotor core, thus avoiding excessive gas velocity in the rotor core's flow holes. Furthermore, it reduces the risk of some oil being rapidly discharged with the gas before condensation and return due to excessive oil-gas mixture velocity, thereby reducing compressor oil discharge, saving operating costs, and improving compressor gas delivery efficiency.

[0014] Furthermore, since the angle between the first guide plate and the end plate is greater than or equal to 60 degrees and less than 90 degrees, the first guide plate can reduce the installation difficulty of the rotor assembly, and the outer extension of the first guide plate will not interfere with the compressor's oil return channel.

[0015] In some technical solutions of the present invention, optionally, the plurality of flow guiding components include a second flow guiding plate, the first side of the second flow guiding plate is connected to the end plate, and the second side of the second flow guiding plate extends obliquely in a direction close to the axis of the rotor core.

[0016] In this technical solution, multiple flow guiding components include a second flow guide plate. The first side of the second flow guide plate is connected to the end plate, and the second side of the second flow guide plate extends obliquely towards the axis of the rotor core. The second flow guide plate guides the gas flow, causing it to accelerate upward along the axial direction. Because the second side of the second flow guide plate extends obliquely towards the axis of the rotor core, the gas flows faster and forms a positive pressure above the rotor core. This pressure difference changes the flow direction at the central through-hole of the rotor core, preventing the gas from carrying atomized oil and flowing rapidly. Instead, the gas flows directly out through the compressor outlet, preventing uncondensed oil from flowing back and reducing the amount of oil discharged by the compressor.

[0017] In some technical solutions of the present invention, optionally, the included angle between the second guide plate and the end plate is greater than 90 degrees and less than or equal to 120 degrees.

[0018] In this technical solution, the angle between the second guide plate and the end plate is greater than 90 degrees and less than or equal to 120 degrees. Since the tilt angle of the second guide plate is limited to this range, the manufacturing process can be simplified, facilitating the production and installation of the guide components. This also avoids limiting the number of inwardly tilted second guide plates due to excessive inward tilting angles during installation, thereby improving flow efficiency and simplifying the rotor assembly installation process. The limitation of the tilt angle between the second guide plate and the end plate to greater than 90 degrees and less than or equal to 120 degrees also prevents an excessively large positive pressure zone formed at the upper end of the rotor core. This avoids increased gas backflow in the rotor core's flow holes due to an excessively large positive pressure zone, thus improving gas flow efficiency. Simultaneously, it reduces the amount of oil discharged quickly with the gas before condensation and backflow due to excessive oil-gas mixture velocity, thereby reducing compressor oil discharge, saving operating costs, and improving compressor gas flow efficiency.

[0019] In some technical solutions of the present invention, optionally, the plurality of flow guiding components include a third flow guiding plate, the first side of the third flow guiding plate being connected to the end plate, and the second side of the third flow guiding plate extending along the axis of the rotor core.

[0020] In this technical solution, multiple flow guiding components include a third flow guiding plate. The first side of the third flow guiding plate is connected to the end plate, and the second side of the third flow guiding plate extends along the axis of the rotor core. The third flow guiding plate is designed to guide the gas flow. Under the drive of the third flow guiding plate, the gas flows upward along the axis at an accelerated speed, improving the gas guiding efficiency and thus increasing the working efficiency of the compressor.

[0021] Furthermore, the third guide plate can balance the pressure above the rotor core, ensure stable gas flow, and reduce the increase in compressor oil discharge.

[0022] In some technical solutions of the present invention, optionally, the outer diameter of the end plate is greater than or equal to 0.9 times the outer diameter of the rotor core, and less than or equal to the outer diameter of the rotor core.

[0023] In this technical solution, the outer diameter of the end plate is greater than or equal to 0.9 times the outer diameter of the rotor core and less than or equal to the outer diameter of the rotor core. Since the outer diameter of the end plate is greater than or equal to 0.9 times the outer diameter of the rotor core and less than or equal to the outer diameter of the rotor core, the end plate can protect the exposed part of the rotor core. At the same time, multiple flow guiding components are set on the end plate, and the outer diameter of the end plate can prevent the inclined flow guiding plate among the multiple flow guiding components from contacting the coil, thereby avoiding the influence of the flow guiding plate on the coil operation. Furthermore, when the flow guiding plate extends outward circumferentially away from the rotor core axis, the outer diameter of the end plate is greater than or equal to 0.9 times the outer diameter of the rotor core and less than or equal to the outer diameter of the rotor core, which can prevent the flow guiding plate from contacting the coil, thereby protecting the outwardly inclined flow guiding plate and the coil.

[0024] In some technical solutions of the present invention, optionally, the rotor core is provided with a shaft hole and a plurality of first through holes, the plurality of first through holes being arranged circumferentially along the shaft hole and the plurality of first through holes penetrating the rotor core along the axial direction of the rotor core; the end plate is provided with a second through hole, the second through hole being opposite to the first through hole.

[0025] In this technical solution, the rotor core is provided with a shaft hole, which provides space for the shaft to pass through the rotor assembly and also serves as a gas guide, improving gas guiding efficiency. Multiple first through holes are arranged circumferentially along the shaft hole within the rotor core, and these first through holes also penetrate the rotor core axially. The multiple first through holes increase the gas guiding area, improving gas guiding efficiency. The circumferential arrangement of the first through holes ensures a uniform distribution of gas guiding channels, thereby improving gas guiding stability and making gas flow more stable. The axial penetration of the first through holes into the rotor core improves gas guiding smoothness. The end plate is provided with a second through hole, which is opposite to the first through hole. This opposition ensures smooth exhaust from the first through hole, further improving gas guiding efficiency.

[0026] In some technical solutions of the present invention, the rotor assembly may optionally include a balancing component, which is disposed on the side of the end plate away from the rotor core and arranged circumferentially along the second through hole.

[0027] In this technical solution, a balancing component is installed within the rotor assembly. This balancing component is located on the end plate away from the rotor core. It acts as a counterweight for the overall structure of the rotor assembly, maintaining dynamic balance as the rotor core rotates, thus improving the stability of the rotor assembly during operation and reducing compressor noise. The balancing component is arranged circumferentially along the second through hole, and its position avoids affecting airflow.

[0028] In some technical solutions of the present invention, optionally, the rotor core is provided with a plurality of third through holes, the plurality of third through holes are arranged along the circumference of the rotor core, and the plurality of third through holes penetrate the rotor core along the axial direction of the rotor core; the end plate is provided with a plurality of notches, the plurality of notches being opposite to the plurality of third through holes respectively.

[0029] In this technical solution, the rotor core is provided with multiple third through holes, which are arranged circumferentially along the rotor core and extend through the rotor core axially. These third through holes provide space for air delivery, improving air delivery efficiency and thus enhancing the compressor's operating efficiency. The end plate is provided with multiple notches, each corresponding to one of the third through holes. These notches prevent the exhaust gas from the third through holes from being blocked by the end plate, improving the gas flow efficiency at the third through holes.

[0030] In some technical solutions of the present invention, alternatively, multiple notches and multiple flow guiding components are arranged alternately.

[0031] In this technical solution, multiple gaps and multiple flow guiding components are arranged alternately, so that the flow of gas at the gaps can be unblocked by the multiple flow guiding components. Because multiple gaps and multiple flow guiding components are arranged alternately, the multiple flow guiding components can avoid the exhaust of gas at the gaps, and at the same time, the multiple flow guiding components can increase the gas flow rate at the gaps.

[0032] A second aspect of the present invention provides a compressor comprising a rotor assembly as described in any of the above technical solutions.

[0033] In some technical solutions of the present invention, optionally, the compressor further includes a housing, a stator core, and a stator winding. The stator core is disposed inside the housing, opposite to the rotor core, and the stator core is provided with slots; the stator winding is disposed within the slots.

[0034] In this technical solution, the compressor has a housing that provides installation space for the compressor's rotor assembly, stator core, and stator windings. The stator core is housed within the housing, opposite the rotor core. When the compressor is operating, the stator core enhances the strength of the induced magnetic field, thereby increasing the magnetic torque between the stator core and rotor core, and thus improving operating efficiency. The stator core has slots, and the stator windings are housed within these slots, which secure the stator windings.

[0035] In some technical solutions of the present invention, optionally, the height of the end of the stator winding protruding from the stator core in the axial direction of the stator core is a first height; the height of the plurality of flow guiding components in the axial direction of the stator core is a second height; the second height is greater than or equal to one-third of the first height and less than or equal to the first height.

[0036] In this technical solution, the height of the end of the stator winding protruding from the stator core along the axial direction of the stator core is the first height, and the height of the multiple flow guiding components along the axial direction of the stator core is the second height. The second height is greater than or equal to one-third of the first height and less than or equal to the first height. Because the height range of the multiple flow guiding components along the axial direction of the stator core is greater than or equal to one-third of the height of the end of the stator winding protruding from the stator core along the axial direction of the stator core and less than or equal to the height of the end of the stator winding protruding from the stator core along the axial direction of the stator core, it avoids the formation of an excessively large negative pressure zone under the rapid rotation of the gas driven by the flow guiding components. This reduces the accumulation of atomizing oil in the negative pressure zone, thereby preventing the accumulated atomizing oil from being carried out of the compressor under excessive negative pressure, reducing the amount of oil discharged, improving the return efficiency, and preventing an increase in the tendency of the compressor's lubricating oil to leak.

[0037] Optionally, in some technical solutions of the present invention, the compressor further includes a pump assembly, which includes a cylinder and a crankshaft, with an eccentric portion of the crankshaft disposed inside the cylinder and the crankshaft connected to the rotor core; a plurality of flow guiding components are disposed on the side of the rotor core away from the pump assembly.

[0038] In this technical solution, the compressor also includes a pump assembly. The pump assembly drives the refrigerant flow, guiding the gas flow and thus completing the compressor's exhaust work. The pump assembly includes a cylinder and a crankshaft. The eccentric part of the crankshaft is located inside the cylinder, and the crankshaft is connected to the rotor core, providing rotational support for the rotor core. Multiple flow guiding components are located on the side of the rotor core away from the pump assembly. Because the flow guiding components are positioned relative to the rotor core and the pump assembly, when the compressor is working, the pump assembly drives the refrigerant flow, which in turn drives the oil-gas mixture to flow. At the outlet, the multiple flow guiding components provide driving force for the flow of the oil-gas mixture, achieving rapid exhaust while preventing the accumulation of atomized oil, thereby reducing atomized oil loss. This results in higher compressor gas guiding efficiency, increased compressor oil return, and improved lubrication during compressor operation.

[0039] Specifically, the arrangement of multiple flow guiding components can be adjusted according to the working conditions of the pump assembly. Only the first flow guiding plate, only the second flow guiding plate, or both the first and second flow guiding plates can be arranged in the multiple flow guiding components. The first and third flow guiding plates can also be arranged in the multiple flow guiding components at the same time, as can the second and third flow guiding plates.

[0040] Additional aspects and advantages of the 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

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0042] Figure 1 This is one of the structural schematic diagrams of a compressor according to an embodiment of the present invention;

[0043] Figure 2 This is one of the structural schematic diagrams of a rotor assembly according to an embodiment of the present invention;

[0044] Figure 3 This is a second schematic diagram of the structure of a rotor assembly according to an embodiment of the present invention;

[0045] Figure 4 This is a third schematic diagram of the rotor assembly according to an embodiment of the present invention;

[0046] Figure 5 This is a fourth schematic diagram of the structure of a rotor assembly according to an embodiment of the present invention;

[0047] Figure 6 This is the fifth schematic diagram of the structure of a rotor assembly according to an embodiment of the present invention;

[0048] Figure 7 This is a sixth schematic diagram of the structure of a rotor assembly according to an embodiment of the present invention;

[0049] Figure 8 One of the cross-sectional velocity contour maps of a compressor according to an embodiment of the present invention;

[0050] Figure 9 This is a second cross-sectional velocity contour plot of a compressor according to an embodiment of the present invention;

[0051] Figure 10 The third cross-sectional velocity contour plot of a compressor according to an embodiment of the present invention;

[0052] Figure 11The fourth cross-sectional velocity contour map of a compressor according to an embodiment of the present invention.

[0053] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0054] Rotor assembly 100, rotor core 110, shaft hole 112, first through hole 114, third through hole 116, end plate 120, second through hole 122, notch 124, flow guide component 130, first flow guide plate 132, second flow guide plate 134, third flow guide plate 136, balancing component 140, compressor 200, housing 210, stator core 220, wire groove 222, stator winding 230, pump assembly 240, cylinder 242, crankshaft 244, eccentric part 246. Detailed Implementation

[0055] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0056] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0057] The following reference Figures 1 to 11 The rotor assembly 100 and compressor 200 are described according to some embodiments of the present invention.

[0058] like Figure 1 As shown, in one embodiment of the present invention, a rotor assembly 100 is provided, including a rotor core 110, an end plate 120, and a plurality of flow guiding components 130. The end plate 120 is disposed on one side of the rotor core 110 in the axial direction; the plurality of flow guiding components 130 are connected to the end plate 120 and arranged circumferentially along the end plate 120, and at least one of the plurality of flow guiding components 130 is arranged obliquely relative to the axial direction of the rotor core 110.

[0059] In this embodiment, such as Figure 1As shown, the rotor assembly 100 includes a rotor core 110, which enhances the magnetic induction intensity and increases the magnetic flux density during operation, thereby improving working efficiency. An end plate 120 is provided on one axial side of the rotor core 110. The end plate 120 prevents the rotor core 110 from being exposed, thus protecting it. The end plate 120 also serves to secure the flow guiding component 130. During the production and installation of the rotor assembly 100, the end plate 120 facilitates assembly. The rotor assembly 100 also includes multiple flow guiding components 130, which are connected to the end plate 120 and arranged circumferentially along the end plate 120. The multiple flow guiding components 130 can guide the flow of the oil-gas mixture. When the compressor 200 is working, the oil-gas mixture flows out through the flow holes of the rotor core 110. Since there is space above the rotor core 110 and below the air outlet of the compressor 200, the multiple flow guiding components 130 can guide the oil-gas mixture flowing out from the flow holes of the rotor core 110, accelerate the flow speed of the oil and gas, and thus prevent the accumulation of oil and gas. At least one of the multiple flow guiding components 130 is arranged axially inclined relative to the rotor core 110. During the flow guiding process of the oil-gas mixture, the inclined arrangement of the flow guiding component 130 can adjust the pressure at the upper end of the rotor core 110, thereby controlling the pressure difference between the upper part of the rotor core 110 and the flow passage of the rotor core 110. This, in turn, regulates the flow rate of the oil and gas, prevents the accumulation of oil and gas at the outlet of the compressor 200, reduces the loss of condensed oil with the gas discharge, thereby reducing the oil discharge of the compressor 200, increasing the oil return rate of the compressor 200, and thus improving the smooth operation of the compressor 200.

[0060] Specifically, such as Figure 2 and Figure 3 As shown, the tilt angle of at least one flow guide component 130 can be adjusted according to the actual production needs of the compressor 200. At the same time, the tilt direction of at least one tilting flow guide component 130 is not fixed. It can be set to tilt inward or outward according to the exhaust situation of the compressor 200.

[0061] This embodiment provides a rotor assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0062] like Figure 1 , Figure 2 and Figure 3 As shown, the plurality of flow guiding components 130 include a first flow guiding plate 132, a first side of the first flow guiding plate 132 is connected to the end plate 120, and a second side of the first flow guiding plate 132 extends obliquely away from the axis of the rotor core 110.

[0063] In this embodiment, the plurality of flow guiding components 130 include a first flow guiding plate 132, a first side of the first flow guiding plate 132 is connected to the end plate 120, and a second side of the first flow guiding plate 132 extends obliquely away from the axis of the rotor core 110. The first guide plate 132 serves to guide the gas flow. Under the influence of the first guide plate 132, the gas accelerates upward along the axial direction. Because the second side of the first guide plate 132 extends at an angle away from the axis of the rotor core 110, the gas flows faster under the influence of the first guide plate 132 and forms a negative pressure above the rotor core 110. Consequently, the pressure inside the flow hole of the rotor core 110 is greater than the pressure at the upper end of the rotor core 110, creating a pressure difference between the upper end of the rotor core 110 and the flow hole. Under the action of the pressure difference, the oil-gas mixture accelerates and flows upward along the flow hole of the rotor core 110. Under the driving force generated by the pressure difference, the flow area inside the rotor assembly 100 increases, the oil-gas flow becomes smoother, and the gas guiding efficiency increases. The rapid flow of oil-gas can reduce gas accumulation, thereby reducing the amount of atomizing oil that is carried out of the compressor 200 by the airflow after condensation, thus improving the oil return rate of the compressor 200.

[0064] The angle β between the first guide plate 132 and the end plate 120 is greater than or equal to 60 degrees and less than 90 degrees.

[0065] In this embodiment, such as Figure 4 and Figure 5 As shown, the angle β between the first guide plate 132 and the end plate 120 is greater than or equal to 60 degrees and less than 90 degrees. Since the tilt angle of the first guide plate 132 is limited to an angle β between it and the end plate 120 of greater than or equal to 60 degrees and less than 90 degrees, the manufacturing process of the first guide plate 132 can be simplified, facilitating the production and installation of the guide component 130. The limitation of the tilt angle of the first guide plate 132 to an angle β between it and the end plate 120 of greater than or equal to 60 degrees and less than 90 degrees can prevent the negative pressure zone formed by the guide component 130 at the upper end of the rotor core 110 from being too large. This avoids excessively large gas flow velocity in the rotor core flow holes due to an excessively large negative pressure zone, and also reduces the rapid discharge of some oil with the gas before condensation and return due to excessively high oil-gas mixture flow velocity. This reduces the oil discharge of the compressor 200, saves operating costs, and improves the gas guiding efficiency of the compressor 200.

[0066] Furthermore, such as Figure 4As shown, because the angle β between the first guide plate 132 and the end plate 120 is greater than or equal to 60 degrees and less than 90 degrees, the first guide plate 132 can reduce the installation difficulty of the rotor assembly 100, and the outer extension of the first guide plate 132 will not interfere with the oil return channel of the compressor 200.

[0067] Optionally, the included angle β can be 60 degrees; the included angle β can be 70 degrees; the included angle β can be 80 degrees; or the included angle β can be 89 degrees.

[0068] like Figure 4 As shown, the plurality of flow guiding components 130 include a second flow guiding plate 134, the first side of the second flow guiding plate 134 being connected to the end plate 120, and the second side of the second flow guiding plate 134 extending obliquely toward the axis of the rotor core 110.

[0069] In this embodiment, the multiple flow guiding components 130 include a second flow guiding plate 134. The first side of the second flow guiding plate 134 is connected to the end plate 120, and the second side of the second flow guiding plate 134 extends obliquely towards the axis of the rotor core 110. The second flow guiding plate 134 serves to guide the gas flow. Under the action of the second flow guiding plate 134, the gas accelerates its flow axially upward. Because the second side of the second flow guiding plate 134 extends obliquely towards the axis of the rotor core 110, the gas accelerates its flow under the action of the second flow guiding plate 134 and forms a positive pressure above the rotor core 110. Thus, under the action of the pressure difference, the flow direction at the central through hole of the rotor core 110 is changed, thereby preventing the gas from carrying atomized oil and flowing rapidly. The gas flows directly out through the air outlet of the compressor 200, preventing the oil from condensing and flowing back, and reducing the amount of oil discharged by the compressor 200.

[0070] The angle α between the second guide plate 134 and the end plate 120 is greater than 90 degrees and less than or equal to 120 degrees.

[0071] In this embodiment, such as Figure 5The angle α between the second guide plate 134 and the end plate 120 is greater than 90 degrees and less than or equal to 120 degrees. Since the tilt angle of the second guide plate 134 is limited to an angle α between it and the end plate 120 that is greater than 90 degrees and less than or equal to 120 degrees, the manufacturing process of the second guide plate 134 can be simplified, facilitating the production and installation of the guide component 130. Simultaneously, it avoids limiting the number of inwardly tilted second guide plates 134 due to excessive inward tilting angles during the installation of the guide component 130, thereby improving the guiding efficiency and simplifying the installation process of the rotor assembly 100. The tilt angle of the second guide plate 134 is limited to an angle α between it and the end plate 120 that is greater than 90 degrees and less than or equal to 120 degrees. The included angle α between 20 is greater than 90 degrees and less than or equal to 120 degrees. This can prevent the positive pressure zone formed by the flow guide component 130 at the upper end of the rotor core 110 from being too large. This will prevent the increase of gas backflow in the flow passage of the rotor core due to the excessive positive pressure zone, thereby improving the gas flow efficiency. At the same time, it will reduce the amount of oil discharged quickly with the gas before condensation and backflow due to the excessive flow velocity of the oil-gas mixture. This will reduce the amount of oil discharged by the compressor 200, save operating costs, and improve the gas guiding efficiency of the compressor 200.

[0072] Optionally, the included angle α can be 91 degrees; the included angle α can be 100 degrees; or the included angle α can be 120 degrees.

[0073] like Figure 4 and Figure 5 As shown, the plurality of flow guiding components 130 include a third flow guiding plate 136, the first side of the third flow guiding plate 136 being connected to the end plate 120, and the second side of the third flow guiding plate 136 extending along the axis of the rotor core 110.

[0074] In this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the multiple flow guiding components 130 include a third flow guiding plate 136. The first side of the third flow guiding plate 136 is connected to the end plate 120, and the second side of the third flow guiding plate 136 extends along the axis of the rotor core 110. The third flow guiding plate 136 is provided to guide the gas. Under the drive of the third flow guiding plate 136, the gas accelerates upward along the axis, improves the gas guiding efficiency, and thus increases the working efficiency of the compressor 200.

[0075] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the third guide plate 136 can balance the pressure above the rotor core 110, ensure stable gas flow, and reduce the increase in oil discharge from the compressor 200.

[0076] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the outer diameter D2 of the end plate 120 is greater than or equal to 0.9 times the outer diameter D1 of the rotor core 110, and less than or equal to the outer diameter D1 of the rotor core 110.

[0077] In this embodiment, the outer diameter D2 of the end plate 120 is greater than or equal to 0.9 times the outer diameter D1 of the rotor core 110, and less than or equal to the outer diameter D1 of the rotor core 110. Since the outer diameter D2 of the end plate 120 is greater than or equal to 0.9 times the outer diameter D1 of the rotor core 110, and less than or equal to the outer diameter D1 of the rotor core 110, the end plate 120 can protect the exposed portion of the rotor core 110. Simultaneously, multiple flow guiding components 130 are disposed on the end plate 120, thereby... The outer diameter D2 can prevent the inclined guide plate in the multiple guide components 130 from contacting the coil, thereby avoiding the influence of the guide plate setting on the coil operation. Furthermore, when the guide plate extends outward in a direction away from the axis of the rotor core 110, the outer diameter D2 of the end plate 120 is greater than or equal to 0.9 times the outer diameter D1 of the rotor core 110, and less than or equal to the outer diameter D1 of the rotor core 110, which can prevent the guide plate from contacting the coil, thereby protecting the outwardly inclined guide plate and the coil.

[0078] The rotor core 110 is provided with a shaft hole 112 and a plurality of first through holes 114. The plurality of first through holes 114 are arranged circumferentially along the shaft hole 112 and the plurality of first through holes 114 penetrate the rotor core 110 along the axial direction of the rotor core 110. The end plate 120 is provided with a second through hole 122, which is opposite to the first through hole 114.

[0079] In this embodiment, the rotor core 110 is provided with a shaft hole 112, which provides space for the shaft to pass through the rotor assembly 100. The shaft hole 112 can also guide the gas flow and improve the gas guiding efficiency. Multiple first through holes 114 are arranged circumferentially along the shaft hole 112 within the rotor core 110, and the multiple first through holes 114 penetrate the rotor core 110 axially. The multiple first through holes 114 can increase the gas guiding area and improve the gas guiding efficiency. The circumferential arrangement of the first through holes 114 along the shaft hole 112 ensures a uniform distribution of the gas guiding channels, thereby improving the gas guiding stability and making the gas flow more stable. The axial penetration of the first through holes 114 into the rotor core 110 improves the smoothness of the gas guiding flow. The end plate 120 is provided with a second through hole 122, which is opposite to the first through hole 114. Since the second through hole 122 is opposite to the first through hole 114, the first through hole 114 can be vented smoothly, thus improving the air guiding efficiency.

[0080] The rotor assembly 100 also includes a balancing component 140, which is disposed on the side of the end plate 120 away from the rotor core 110 and arranged circumferentially along the second through hole 122.

[0081] In this embodiment, a balancing component 140 is provided within the rotor assembly 100. The balancing component 140 is located on the side of the end plate 120 away from the rotor core 110. The balancing component 140 serves as a counterweight for the overall structure of the rotor assembly 100. The balancing component 140 maintains dynamic balance when the rotor core 110 rotates, improving the stability of the rotor assembly 100 during operation and reducing the operating noise of the compressor 200. The balancing component 140 is arranged circumferentially along the second through hole 122, and its position avoids affecting airflow.

[0082] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the rotor core 110 is provided with a plurality of third through holes 116, which are arranged along the circumference of the rotor core 110 and penetrate the rotor core 110 along the axial direction; the end plate 120 is provided with a plurality of notches 124, which are respectively opposite to the plurality of third through holes 116.

[0083] In this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the rotor core 110 is provided with multiple third through holes 116. These holes are arranged circumferentially around the rotor core 110 and extend axially through it. The multiple third through holes 116 provide space for airflow, improving airflow efficiency and thus enhancing the operating efficiency of the compressor 200. The end plate 120 is provided with multiple notches 124, each corresponding to one of the third through holes 116. The notches 124 prevent the exhaust gas from the third through holes 116 from being blocked by the end plate 120, thereby improving the gas flow efficiency at the third through holes 116.

[0084] Multiple notches 124 and multiple flow guiding components 130 are arranged alternately.

[0085] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in this embodiment, multiple gaps 124 and multiple flow guiding components 130 are arranged alternately, so that the flow of gas at the gaps 124 is not blocked by the multiple flow guiding components 130. Because the multiple gaps 124 and multiple flow guiding components 130 are arranged alternately, the multiple flow guiding components 130 have the effect of avoiding the exhaust of the gaps 124. At the same time, the multiple flow guiding components 130 can increase the gas flow rate at the gaps 124.

[0086] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The air guide rate and oil return rate above the rotor assembly 100 rotating in direction a are relatively good, such as... Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, Figure 8 and Figure 10 This is a cloud map showing the vertical velocity distribution of the motor cross-section when the flow guiding component 130 is not tilted. Figure 8 and Figure 10 The flow direction of the third through hole 116 in the rotor core 110 is radially downward along the axis, the flow direction of the first through hole 114 in the rotor core 110 is radially upward along the axis, and the flow direction of the return channel between the rotor core 110 and the stator core 220 is radially upward along the axis. Figure 9 For the flow guiding component 130, etc. Figure 2 and Figure 4 The diagram shows the vertical velocity distribution cloud map of the motor cross-section when tilted. Figure 9 and Figure 8 As can be seen from the comparison, when multiple flow guiding components 130 are tilted away from the axis, the flow guiding direction of the first through hole 114 of the rotor core 110 in the rotor assembly 100 is radially upward along the axis, the gas flow rate increases, the flow guiding speed is fast, and thus the atomizing oil accumulates above the rotor core 110. The flow guiding direction between the rotor core 110 and the stator core 220 is radially downward along the axis, the compressor lubricating oil return rate increases, and the oil discharge volume decreases. Figure 11 For the flow guiding component 130, etc. Figure 3 and Figure 5 The diagram shows the vertical velocity distribution cloud map of the motor cross-section when tilted. Figure 9 and Figure 10 As can be seen from the comparison, when multiple flow guiding components 130 are tilted towards the direction close to the axis, the flow guiding direction of the first through hole 114 of the rotor core 110 is radially downward along the axis, which avoids the loss of atomizing oil due to excessive gas flow rate and improves the compressor return rate.

[0087] A second aspect of the present invention provides a compressor 200, including a rotor assembly 100 as described in any of the above embodiments.

[0088] like Figure 1 As shown, the compressor 200 also includes a housing 210, a stator core 220, and a stator winding 230. The stator core 220 is disposed inside the housing 210, opposite to the rotor core 110, and the stator core 220 is provided with a wire slot 222; the stator winding 230 is disposed inside the wire slot 222.

[0089] In this embodiment, such as Figure 1 As shown, the compressor 200 is provided with a housing 210, which provides installation space for the rotor assembly 100, stator core 220, and stator winding 230 of the compressor 200. The stator core 220 is disposed within the housing 210, opposite to the rotor core 110. When the compressor 200 is working, the stator core 220 can enhance the strength of the induced magnetic field, thereby enhancing the magnetic field torque between the stator core 220 and the rotor core 110, and thus improving working efficiency. The stator core 220 is provided with a slot 222, and the stator winding 230 is disposed within the slot 222, which can fix the stator winding 230.

[0090] like Figure 1 As shown, the height of the end of the stator winding 230 protruding from the stator core 220 in the axial direction of the stator core 220 is the first height H1; the height of the multiple flow guiding components 130 in the axial direction of the stator core 220 is the second height H2; the second height H2 is greater than or equal to one-third of the first height H1, and less than or equal to the first height H1.

[0091] In this embodiment, the height of the end of the stator winding 230 protruding from the stator core 220 in the axial direction of the stator core 220 is a first height H1, and the height of the plurality of flow guiding components 130 in the axial direction of the stator core 220 is a second height H2. The second height H2 is greater than or equal to one-third of the first height H1 and less than or equal to the first height H1, because the height range of the plurality of flow guiding components 130 in the axial direction of the stator core 220 is greater than or equal to one-third of the height of the stator winding 230 protruding from the stator core 220. The height of the end of the stator core 220 in the axial direction is less than or equal to the height of the end of the stator winding 230 protruding from the stator core 220 in the axial direction. Therefore, it avoids the negative pressure zone formed by the rapid rotation of the gas driven by the guide component 130 being too large, thereby reducing the accumulation of atomizing oil in the negative pressure zone. This prevents the accumulated atomizing oil from being carried out of the compressor 200 under excessive negative pressure, reducing the amount of oil discharged, improving the return efficiency, and preventing the compressor 200 from losing more lubricating oil.

[0092] like Figure 1As shown, the compressor 200 also includes a pump assembly 240, which includes a cylinder 242 and a crankshaft 244. An eccentric portion 246 of the crankshaft 244 is disposed inside the cylinder 242, and the crankshaft 244 is connected to the rotor core 110.

[0093] Multiple flow guiding components 130 are disposed on the side of the rotor core 110 away from the pump assembly 240.

[0094] In this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the compressor 200 also includes a pump assembly 240, which can drive the refrigerant to flow. Under the flow of the refrigerant, the gas is guided, thereby completing the exhaust work of the compressor 200. The pump assembly 240 includes a cylinder 242 and a crankshaft 244. The eccentric portion 246 of the crankshaft 244 is disposed inside the cylinder 242. The crankshaft 244 is connected to the rotor core 110 and provides rotational support for the rotor core 110. Multiple flow guiding components 130 are disposed on the side of the rotor core 110 away from the pump assembly 240. Since the flow guiding components 130 are positioned relative to the rotor core 110 and the pump assembly 240, when the compressor 200 is working, the pump assembly 240 pushes the refrigerant to circulate, and the refrigerant drives the oil-gas mixture to flow. At the outlet, the multiple flow guiding components 130 provide driving force for the flow of the oil-gas mixture, which can quickly exhaust the gas while avoiding the accumulation of atomized oil, thereby reducing the loss of atomized oil. This makes the air guiding efficiency of the compressor 200 higher, increases the oil return of the compressor 200, and improves the lubrication effect of the compressor 200 during operation.

[0095] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the arrangement of multiple flow guiding components 130 can be adjusted according to the working conditions of the pump assembly 240. Only the first flow guiding plate 132 or only the second flow guiding plate 134 can be provided in the multiple flow guiding components 130, or both the first flow guiding plate 132 and the second flow guiding plate 134 can be provided at the same time. The first flow guiding plate 132 and the third flow guiding plate 136 can also be provided in the multiple flow guiding components 130 at the same time, as can the second flow guiding plate 134 and the third flow guiding plate 136.

[0096] In the claims, description, and accompanying drawings of this invention, the term "plural" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," 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 simplifying the descriptive process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting the invention. The terms "connected," "installed," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood based on the specific circumstances described above.

[0097] In the claims, description, and accompanying drawings of this invention, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In the claims, description, and accompanying drawings of this invention, 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.

[0098] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rotor assembly, characterized in that, include: Rotor core; An end plate is disposed on one side of the rotor core in the axial direction. Multiple flow guiding components are connected to the end plate and arranged circumferentially along the end plate. At least one of the multiple flow guiding components is arranged obliquely relative to the axial direction of the rotor core. The rotor core is provided with a plurality of third through holes, which are arranged along the circumference of the rotor core and penetrate the rotor core along the axial direction of the rotor core. The end plate is provided with a plurality of notches, and the plurality of notches are respectively opposite to the plurality of third through holes; The multiple notches and the multiple flow guiding components are arranged alternately.

2. The rotor assembly according to claim 1, characterized in that, The flow guiding component includes: A first guide plate, the first side of which is connected to the end plate, and the second side of which extends obliquely away from the axis of the rotor core.

3. The rotor assembly according to claim 2, characterized in that, The angle between the first guide plate and the end plate is greater than or equal to 60 degrees and less than 90 degrees.

4. The rotor assembly according to claim 1, characterized in that, The flow guiding component includes: The second guide plate has a first side connected to the end plate and a second side extending obliquely toward the axis of the rotor core.

5. The rotor assembly according to claim 4, characterized in that, The angle between the second guide plate and the end plate is greater than 90 degrees and less than or equal to 120 degrees.

6. The rotor assembly according to claim 1, characterized in that, The flow guiding component includes: The third guide plate has a first side connected to the end plate and a second side extending along the axis of the rotor core.

7. The rotor assembly according to claim 1, characterized in that, The outer diameter of the end plate is greater than or equal to 0.9 times the outer diameter of the rotor core, and less than or equal to the outer diameter of the rotor core.

8. The rotor assembly according to claim 1, characterized in that, The rotor core is provided with a shaft hole and a plurality of first through holes. The plurality of first through holes are arranged circumferentially along the shaft hole and penetrate the rotor core along the axial direction of the rotor core. The end plate is provided with a second through hole, which is opposite to the first through hole.

9. The rotor assembly according to claim 8, characterized in that, Also includes: A balancing component is disposed on the side of the end plate away from the rotor core and arranged circumferentially along the second through hole.

10. A compressor, characterized in that, Includes the rotor assembly as described in any one of claims 1 to 9.

11. The compressor according to claim 10, characterized in that, Also includes: case; A stator core is disposed within the housing, opposite to the rotor core, and the stator core is provided with wire slots; Stator winding, wherein the stator winding is disposed within the slot.

12. The compressor according to claim 11, characterized in that, The height of the end of the stator winding protruding from the stator core along the axial direction of the stator core is the first height; The height of the flow guiding component in the axial direction of the stator core is the second height; The second height is greater than or equal to one-third of the first height, and less than or equal to the first height.

13. The compressor according to claim 11 or 12, characterized in that, Also includes: A pump assembly, comprising a cylinder and a crankshaft, wherein an eccentric portion of the crankshaft is disposed within the cylinder, and the crankshaft is connected to the rotor core; Multiple flow guiding components are disposed on the side of the rotor core away from the pump assembly.

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