Rotor assembly, electric machine, compressor and air conditioning device

Abstract

The utility model provides a kind of rotor assembly, motor, compressor and air conditioning equipment, rotor assembly includes: rotor core;Cowl is set to the first end of rotor core;Silencer is set to the side of cowl away from rotor core, and the exhaust port of silencer is located in cowl inside.The utility model provides rotor assembly, the exhaust port of silencer is placed in cowl, so that exhaust gas flow directly enters the flow guide space of cowl after leaving silencer, reduces the direct conflict of airflow and external environment, to effectively reduce exhaust resistance.This helps to improve the exhaust efficiency of compressor, reduces energy loss, and then improves overall energy efficiency.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and more specifically, to a rotor assembly, a motor, a compressor, and an air conditioning device. Background Technology

[0002] Currently, high-speed air conditioning compressors in related technologies include motors, which include rotors. The rotors are equipped with balance blocks, which cause severe oil churning. Therefore, a shroud is usually installed outside the balance blocks and connected to the rotor. However, when the rotor rotates at high speed, the installation of the shroud increases the exhaust resistance of the muffler.

[0003] Therefore, designing a rotor assembly that can reduce the exhaust resistance of the muffler has become an urgent problem to be solved. Utility Model Content

[0004] The present invention aims to at least solve the problem of high exhaust resistance in mufflers in related technologies.

[0005] Therefore, the first aspect of this utility model provides a rotor assembly.

[0006] The second aspect of this utility model provides an electric motor.

[0007] A third aspect of this utility model provides a compressor.

[0008] The fourth aspect of this utility model provides an air conditioning device.

[0009] In view of this, the first aspect of the present invention provides a rotor assembly, comprising: a rotor core; a shroud disposed at the first end of the rotor core; and a silencer disposed on the side of the shroud away from the rotor core, wherein the exhaust port of the silencer is located inside the shroud.

[0010] The rotor assembly provided by this utility model includes a rotor core, a shroud, and a silencer. Specifically, the shroud is located at the first end of the rotor core (i.e., the end of the rotor core), while the silencer is installed on the side of the shroud facing away from the rotor core. The exhaust port of the silencer is located inside the shroud, meaning that the exhaust port is surrounded or partially surrounded by the shroud structure. In air conditioning compressor applications, the rotor core typically serves as the rotating part of the motor, and its high-speed rotation can cause airflow and oil turbulence. The shroud, as a protective or guiding structure, can stabilize airflow and reduce external interference. The silencer is used to reduce noise generated during exhaust by absorbing or weakening sound waves through its internal chamber and opening design. By placing the exhaust port of the silencer inside the shroud, the exhaust airflow directly enters the shroud space after leaving the silencer, thereby utilizing the guiding characteristics of the shroud to optimize the airflow path. For example, in the actual operation of an air conditioning compressor, the rotor core may rotate at a high speed of thousands of revolutions per minute, causing surrounding oil splashing and airflow turbulence. By placing the muffler's exhaust port inside the shroud, the exhaust airflow directly enters the shroud's guide space after leaving the muffler, reducing direct conflict between the airflow and the external environment, thus effectively lowering exhaust resistance. This helps improve the compressor's exhaust efficiency, reduce energy loss, and ultimately enhance overall energy efficiency.

[0011] In some embodiments, the shroud may optionally include: a base plate having a through hole; a perimeter surrounding the through hole and connected to the base plate, with a portion of the muffler extending into the perimeter so that the muffler's exhaust port is located within the perimeter.

[0012] In these embodiments, the shroud includes a base plate and a surrounding edge. The base plate is typically a flat, plate-like structure (e.g., a disc) with a through-hole allowing airflow or fluid to pass through. The surrounding edge is an annular wall structure encircling the through-hole, connected to the base plate to form a cup-shaped or cylindrical space. The silencer portion extends into this surrounding edge, such that the silencer's exhaust port is located within the space formed by the surrounding edge. During compressor operation, the high-speed rotation of the rotor core can cause surrounding oil splashing and airflow turbulence. The through-hole in the base plate of the shroud allows oil or airflow to pass through, while the surrounding edge acts as a guide and shield, forming a partially enclosed or semi-enclosed channel. The silencer's exhaust port extending into the surrounding edge means that the exhaust airflow enters the surrounding space directly after leaving the silencer, rather than being directly exposed to the external environment. This is similar to inserting an exhaust pipe into a shroud, where the airflow is guided and stabilized within the shroud, reducing interaction with external turbulence. Understandably, the muffler's exhaust port can extend into the shroud through a through-hole, or it can extend into the shroud from the end away from the bottom plate, which provides more possibilities for the combination of the shroud and the muffler.

[0013] In some embodiments, optionally, the base plate is connected to the first end of the rotor core, the surrounding edge is disposed on the side of the base plate away from the rotor core, and one end of the surrounding edge is connected to the edge of the through hole, and part of the muffler extends into the surrounding edge through the other end of the surrounding edge so that the exhaust port of the muffler is located inside the surrounding edge.

[0014] In these embodiments, the bottom plate of the shroud is connected to the first end of the rotor core. The surrounding edge is located on the side of the bottom plate facing away from the rotor core. One end of the surrounding edge connects to the edge of a through hole on the bottom plate, forming an annular enclosure structure around the through hole. Part of the muffler extends into the space enclosed by the surrounding edge through the other end, so that the muffler's exhaust port is located inside the surrounding edge. It is easy to understand that the structure formed by the bottom plate and the surrounding edge resembles a "T"-shaped cylinder. With this structure, the balance weights can be placed on both sides of the "T"-shaped shroud. In this way, even if the balance weights experience severe oil churning during operation, the impact on the exhaust effect can be effectively avoided thanks to the blocking effect of the surrounding edge. Furthermore, a certain amount of space is reserved on both sides of the "T"-shaped shroud, which means that the balance weights do not occupy too much internal space of the compressor. This arrangement not only optimizes the layout of the components inside the rotor assembly but also provides the possibility for efficient utilization of the internal space of the compressor, helping to improve the compactness and rationality of the overall compressor structure.

[0015] In some embodiments, optionally, one end of the rim is connected to the first end of the rotor core, and the other end of the rim is connected to the outer edge of the base plate. Part of the muffler extends into the rim through a through hole so that the exhaust port of the muffler is located inside the rim.

[0016] In these embodiments, one end of the surround can be connected to the first end of the rotor core, and the other end of the surround can be connected to the outer edge of the base plate. Part of the muffler extends into the surround through a through-hole, so that the muffler's exhaust port is located inside the surround. It is understood that the surround and the base plate form a U-shaped structure, with the opening of the U-shape connected to the rotor core. Part of the muffler can then extend into the surround through the through-hole at the bottom of the U-shape and discharge into the exhaust channel of the rotor core through the opening of the U-shape. This structural arrangement allows the balance weight to be placed inside the fan shroud, thus preventing the balance weight from agitating the oil inside the compressor.

[0017] In some embodiments, the rotor assembly may optionally include a first balancing block disposed at a first end of the rotor core and located inside or outside the perimeter.

[0018] In these embodiments, a first balance block can also be provided at the first end of the rotor core to counteract uneven mass distribution of the rotor during high-speed rotation, thereby reducing vibration and noise. This improves the smoothness and reliability of the compressor's operation and extends the equipment's lifespan. Since the first balance block is located inside or outside the shroud, its position, combined with the shroud's airflow guiding structure, reduces the direct disturbance of the airflow by the balance block, assists the airflow guiding effect of the shroud, and indirectly reduces exhaust resistance or improves airflow stability.

[0019] Specifically, when the wind shield has a T-shaped structure, the first balance block can be placed outside the perimeter; when the wind shield has a U-shaped structure, the first balance block can be placed inside the perimeter.

[0020] In some embodiments, optionally, the distance from one end of the perimeter away from the base plate to one end of the first balance block away from the base plate along the axial direction of the through hole is greater than or equal to zero.

[0021] In these embodiments, along the axial direction of the through hole, the distance between the end of the retaining edge facing away from the base plate (the free end of the retaining edge) and the end of the first balance block facing away from the base plate is greater than or equal to zero. That is, the end of the retaining edge is at least flush with the end of the balance block, or the retaining edge extends further than the balance block, thereby ensuring that the balance block does not protrude beyond the retaining edge. By ensuring that the end of the retaining edge is at least flush with or longer than the end of the balance block, the retaining edge can achieve a better flow guiding effect, reducing the direct agitation of the surrounding oil by the balance block during high-speed rotation, reducing the direct conflict between the airflow and the external environment, and thus effectively reducing exhaust resistance. This helps to improve the exhaust efficiency of the compressor, reduce energy loss, and thus improve overall energy efficiency.

[0022] In some embodiments, the rotor assembly may optionally include: a second balancing block disposed at the second end of the rotor core, corresponding to the first balancing block, wherein the first end of the rotor core and the second end of the rotor core are opposite ends.

[0023] In these embodiments, a second balance block can also be provided at the second end of the rotor core opposite to the first end, corresponding to the first balance block. By providing balance blocks at both the first and second ends, the axial and radial forces of the rotor can be balanced more effectively, vibration sources can be reduced, the unbalanced mass of the rotor can be effectively counteracted, vibration and noise during high-speed rotation can be reduced, thereby improving the smoothness and reliability of the compressor's operation and extending the equipment's lifespan.

[0024] In some embodiments, the muffler may optionally include: a muffler hood having an opening on the side of the muffler near the shroud; and a muffler pipe having one end connected to the edge of the opening and the other end extending into the shroud, the other end of the muffler pipe forming an exhaust port.

[0025] In these embodiments, the silencer specifically includes a muffler shroud and a muffler pipe. The muffler shroud is typically a shell structure used to contain and absorb sound waves generated during exhaust, with an opening on the side near the shroud to allow airflow. The muffler pipe is a tubular component, with one end connected to the edge of the muffler shroud opening (e.g., by welding, bolting, or integral molding), and the other end extending into the shroud, forming an exhaust port for discharging compressed gas. This design allows the muffler's exhaust port to be located directly inside the shroud, rather than exposed to the external environment. By placing the exhaust port of the muffler pipe inside the shroud, the exhaust airflow directly enters the shroud's guide space after leaving the muffler, reducing direct conflict between the airflow and the external environment and turbulence generation, thereby smoothing the exhaust process, effectively reducing exhaust resistance, and improving the compressor's exhaust efficiency and overall energy efficiency.

[0026] In some embodiments, the silencer tube may optionally be a flanged portion formed by flanging the periphery of the opening toward the side closer to the shroud.

[0027] In these embodiments, the silencer tube can be a flanged portion formed by flanging the periphery of the silencer shroud opening towards the side closer to the shroud. That is, the silencer tube is not a separate component, but rather a structure formed directly from the edge of the silencer shroud opening through a flanging process (such as stamping, bending, or forming). The flanged portion extends into the shroud and serves as an exhaust port for discharging compressed gas. This design simplifies the silencer's construction, reduces the number of separate components, and avoids additional connection processes (such as welding or bolting), thereby simplifying the assembly process and reducing production costs and complexity. Simultaneously, the flanged portion, as an extension of the silencer shroud, forms an integrated airflow system with the shroud, reducing the risk of component loosening or failure, thus improving component durability and operational reliability, making it suitable for the harsh conditions of high-speed compressors.

[0028] In some embodiments, the rotor assembly may optionally include a pump body assembly disposed on the side of the silencer away from the shroud, the side of the pump body assembly near the silencer having an air outlet that communicates with the interior of the silencer shroud.

[0029] In these embodiments, the rotor assembly also includes a pump body assembly. The pump body assembly is located on the side of the muffler facing away from the shroud (i.e., the other side of the muffler, opposite the shroud), and the side of the pump body assembly closest to the muffler has an outlet that directly communicates with the interior of the muffler. This means that the compressed gas, after being discharged from the outlet of the pump body assembly, directly enters the interior space of the muffler, rather than passing through an intermediate channel or the external environment. By directly communicating the outlet of the pump body assembly with the interior of the muffler, the airflow transmission path from compression to muffler is more direct, reducing turbulence and pressure loss in intermediate stages, thereby effectively reducing exhaust resistance and improving the compressor's exhaust efficiency and overall energy efficiency.

[0030] In some embodiments, optionally, along the axial direction of the rotor core, the length of the silencer tube is H, the length of the silencer tube extending into the shroud is h, the wall thickness of the silencer is T, and the thickness of the shroud is t, wherein T≤H≤6T, 0.5t≤h≤6t, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm.

[0031] In these embodiments, along the axial direction of the rotor core, the length of the silencer tube is H, the length of the silencer tube extending into the shroud is h, the wall thickness of the silencer is T, and the thickness of the shroud is t, wherein T≤H≤6T, 0.5t≤h≤6t, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm. By optimizing the length H of the silencer tube and the extension length h, it is ensured that the exhaust airflow smoothly enters the shroud from the silencer, reducing airflow turning and turbulence generation, thereby effectively reducing exhaust resistance and improving the compressor's exhaust efficiency and overall energy efficiency. The dimensional parameters T≤H≤6T, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm ensure the strength matching of the silencer tube and the shroud, avoiding deformation or damage caused by vibration or stress during high-speed operation, and improving the reliability and lifespan of the components. The insertion length h is in the range of 0.5t to 6t, which makes the silencer pipe and the shroud surround fit tightly, reduces airflow leakage, further optimizes the airflow path, and enhances the stability and consistency of system operation.

[0032] The second aspect of this utility model provides an electric motor, including the rotor assembly of any of the technical solutions in the first aspect.

[0033] The motor provided by this utility model includes the rotor assembly of any of the technical solutions in the first aspect. Since the motor includes the rotor assembly of any of the technical solutions in the first aspect, the motor provided by this utility model also possesses all the beneficial effects of the rotor assembly of any of the technical solutions in the first aspect, which will not be elaborated further here.

[0034] The third aspect of this utility model provides a compressor, including the rotor assembly of any of the technical solutions of the first aspect; and / or the motor of any of the technical solutions of the second aspect.

[0035] The compressor provided by this utility model includes the rotor assembly of any of the first aspects; and / or the motor of any of the second aspects. Since the compressor includes the rotor assembly of any of the first aspects; and / or the motor of any of the second aspects, the compressor provided by this utility model also possesses all the beneficial effects of the rotor assembly of any of the first aspects and / or the motor of any of the second aspects, which will not be elaborated further here.

[0036] The fourth aspect of this utility model provides an air conditioning device, including a rotor assembly as described in any of the technical solutions of the first aspect; and / or a motor as described in any of the technical solutions of the second aspect; and / or a compressor as described in any of the technical solutions of the third aspect.

[0037] The air conditioning equipment provided by this utility model includes a rotor assembly as described in any of the first aspects; and / or a motor as described in any of the second aspects; and / or a compressor as described in any of the third aspects. Since the air conditioning equipment includes the rotor assembly as described in any of the first aspects; and / or a motor as described in any of the second aspects; and / or a compressor as described in any of the third aspects, the air conditioning equipment provided by this utility model also possesses all the beneficial effects of the rotor assembly as described in any of the first aspects and / or the motor as described in any of the second aspects and / or the compressor as described in any of the third aspects, which will not be elaborated further here.

[0038] Additional aspects and advantages of this invention will become apparent in the following description or may be learned by practice of this invention. Attached Figure Description

[0039] 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:

[0040] Figure 1 One of the schematic diagrams of the rotor assembly according to an embodiment of the present invention is shown;

[0041] Figure 2 One of the schematic diagrams of a rotor assembly according to an embodiment of the present invention is shown;

[0042] Figure 3 A second schematic diagram of a partial structure of a rotor assembly according to an embodiment of the present invention is shown;

[0043] Figure 4 The third part of the schematic diagram of the rotor assembly according to an embodiment of the present invention is shown;

[0044] Figure 5 A second schematic diagram of the rotor assembly according to an embodiment of the present invention is shown;

[0045] Figure 6 The fourth part of the schematic diagram of the rotor assembly according to an embodiment of the present invention is shown;

[0046] Figure 7 The fifth part of the schematic diagram of a rotor assembly according to an embodiment of the present invention is shown.

[0047] Among them, 1. Rotor assembly; 11. Rotor core; 111. First end; 112. Second end; 12. Fan cover; 122. Base plate; 1221. Through hole; 123. Surrounding edge; 13. Silencer; 131. Silencer cover; 132. Silencer pipe; 133. Exhaust port; 134. Flanged part; 14. First balance block; 15. Second balance block; 16. Pump body assembly; 161. Upper bearing; 162. Cylinder; 163. Lower bearing; 17. Air outlet. Detailed Implementation

[0048] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model 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.

[0049] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0050] The following reference Figures 1 to 7 This invention describes rotor assemblies, motors, compressors, and air conditioning equipment according to some embodiments of the present invention.

[0051] According to an embodiment of the first aspect of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the first aspect of this utility model provides a rotor assembly 1, including a rotor core 11, a shroud 12, and a silencer 13. The shroud 12 is disposed at the first end 111 of the rotor core 11. The silencer 13 is disposed on the side of the shroud 12 away from the rotor core 11, and the exhaust port 133 of the silencer 13 is located inside the shroud 12.

[0052] The rotor assembly 1 provided by this utility model includes a rotor core 11, a fan shroud 12, and a silencer 13. Specifically, the fan shroud 12 is located at the first end 111 of the rotor core 11 (i.e., the end of the rotor core 11), while the silencer 13 is installed on the side of the fan shroud 12 away from the rotor core 11. The exhaust port 133 of the silencer 13 is located inside the fan shroud 12, meaning that the exhaust port 133 is surrounded or partially surrounded by the structure of the fan shroud 12. In air conditioning compressor applications, the rotor core 11 is usually the rotating part of the motor, and high-speed rotation may cause airflow and oil turbulence. The fan shroud 12, as a protective or guiding structure, can stabilize airflow and reduce external interference. The silencer 13 is used to reduce noise generated during exhaust, absorbing or weakening sound waves through its internal chamber and opening design. By placing the exhaust port 133 of the silencer 13 inside the fan shroud 12, the exhaust airflow directly enters the space of the fan shroud 12 after leaving the silencer 13, thereby utilizing the guiding characteristics of the fan shroud 12 to optimize the airflow path. For example, in the actual operation of an air conditioning compressor, the rotor core 11 may rotate at a high speed of several thousand revolutions per minute, causing surrounding oil to splash and airflow to turbulent. By placing the exhaust port 133 of the muffler 13 inside the shroud 12, the exhaust airflow directly enters the guide space of the shroud 12 after leaving the muffler 13, reducing direct conflict between the airflow and the external environment, thereby effectively reducing exhaust resistance. This helps improve the compressor's exhaust efficiency, reduce energy loss, and thus improve overall energy efficiency.

[0053] In some embodiments, the shroud 12 may optionally include: a base plate 122 having a through hole 1221; a perimeter 123 surrounding the through hole 1221 and connected to the base plate 122, wherein a portion of the muffler 13 extends into the perimeter 123 such that the exhaust port 133 of the muffler 13 is located within the perimeter 123.

[0054] In these embodiments, the shroud 12 includes a base plate 122 and a surrounding edge 123. The base plate 122 is typically a flat plate structure (e.g., a disc) with a through hole 1221 to allow airflow or fluid to pass through. The surrounding edge 123 is an annular wall structure surrounding the through hole 1221, connected to the base plate 122 to form a cup-shaped or cylindrical space. The muffler 13 partially extends into the surrounding edge 123, such that the exhaust port 133 of the muffler 13 is located within the space formed by the surrounding edge 123. During compressor operation, the rotor core 11 rotates at high speed, which may cause surrounding oil splashing and airflow turbulence. The through hole 1221 of the base plate 122 of the shroud 12 allows oil or airflow to pass through, while the surrounding edge 123 acts as a guide and shield, forming a partially closed or semi-closed channel. The exhaust port 133 of the muffler 13 extends into the enclosure 123, meaning that the exhaust airflow enters the enclosure 123 space directly after leaving the muffler 13, rather than being directly exposed to the external environment. This is similar to inserting an exhaust pipe into a shroud, where the airflow is guided and stabilized, reducing interaction with external turbulence. It is understood that the exhaust port 133 of the muffler 13 can extend into the enclosure 123 through the through hole 1221, or through the end of the enclosure 123 furthest from the base plate 122, providing more possibilities for the cooperation between the shroud 12 and the muffler 13.

[0055] In some embodiments, optionally, the base plate 122 is connected to the first end 111 of the rotor core 11, the surrounding edge 123 is disposed on the side of the base plate 122 away from the rotor core 11, and one end of the surrounding edge 123 is connected to the edge of the through hole 1221, and a portion of the muffler 13 extends into the surrounding edge 123 through the other end of the surrounding edge 123 so that the exhaust port 133 of the muffler 13 is located inside the surrounding edge 123.

[0056] In these embodiments, the base plate 122 of the shroud 12 is connected to the first end 111 of the rotor core 11. The surrounding edge 123 is located on the side of the base plate 122 facing away from the rotor core 11. One end of the surrounding edge 123 is connected to the edge of the through hole 1221 on the base plate 122, forming an annular enclosure structure surrounding the through hole 1221. Part of the muffler 13 extends into the space enclosed by the surrounding edge 123 via the other end of the surrounding edge 123, so that the exhaust port 133 of the muffler 13 is located inside the surrounding edge 123. It is easy to understand that the structure formed by the base plate 122 and the surrounding edge 123 resembles a "T"-shaped cylinder. With this structure, when arranging the balance weights, the balance weights can be placed on both sides of the "T"-shaped shroud 12. In this way, even if the balance weights experience severe oil churning during operation, the impact on the exhaust effect can be effectively avoided thanks to the blocking effect of the surrounding edge 123. In addition, the T-shaped fan shroud 12 has reserved space on both sides, which means that the balance block does not need to occupy too much internal space of the compressor. This arrangement not only optimizes the layout of the components inside the rotor assembly 1, but also makes it possible to make efficient use of the internal space of the compressor, which helps to improve the compactness and rationality of the overall compressor structure.

[0057] In some embodiments, optionally, one end of the circumference 123 is connected to the first end 111 of the rotor core 11, and the other end of the circumference 123 is connected to the outer edge of the base plate 122. Part of the muffler 13 extends into the circumference 123 through the through hole 1221 so that the exhaust port 133 of the muffler 13 is located inside the circumference 123.

[0058] In these embodiments, one end of the shroud 123 can be connected to the first end 111 of the rotor core 11, and the other end of the shroud 123 can be connected to the outer edge of the base plate 122. A portion of the muffler 13 extends into the shroud 123 through the through hole 1221, so that the exhaust port 133 of the muffler 13 is located within the shroud 123. It is understood that the shroud 123 and the base plate 122 form a U-shaped structure. The opening of the U-shaped structure is connected to the rotor core 11, allowing a portion of the muffler 13 to extend into the shroud 123 through the through hole 1221 at the bottom of the U-shaped structure and to be discharged into the exhaust passage of the rotor core 11 through the opening of the U-shaped structure. With this structural arrangement, the balance weight can be placed inside the shroud 12, thus preventing the balance weight from agitating the oil inside the compressor.

[0059] In some embodiments, the rotor assembly 1 may optionally include a first balancing block 14 disposed at the first end 111 of the rotor core 11 and located inside or outside the perimeter 123.

[0060] In these embodiments, a first balance block 14 can also be provided at the first end 111 of the rotor core 11 to counteract uneven mass distribution of the rotor during high-speed rotation, thereby reducing vibration and noise. This improves the smoothness and reliability of the compressor's operation and extends the equipment's lifespan. Since the first balance block 14 is located inside or outside the rim 123 of the shroud 12, its position, combined with the airflow guiding structure of the shroud 12, can reduce the direct disturbance of the airflow by the balance block, assist the airflow guiding effect of the shroud 12, and indirectly reduce exhaust resistance or improve airflow stability.

[0061] Specifically, when the wind shield 12 has a T-shaped structure, the first balance block 14 can be placed outside the perimeter 123; when the wind shield 12 has a U-shaped structure, the first balance block 14 can be placed inside the perimeter 123.

[0062] In some embodiments, optionally, along the axial direction of the through hole 1221 ( Figure 4 (In the direction indicated by L), the distance from one end of the perimeter 123 away from the base plate 122 to one end of the first balance block 14 away from the base plate 122 is greater than or equal to zero.

[0063] In these embodiments, along the axial direction of the through hole 1221, the distance between the end of the perimeter 123 facing away from the base plate 122 (the free end of the perimeter 123) and the end of the first balance block 14 facing away from the base plate 122 is greater than or equal to zero. That is, the end of the perimeter 123 is at least flush with the end of the balance block, or the perimeter 123 extends further than the balance block, thereby ensuring that the balance block does not protrude beyond the perimeter 123. By ensuring that the end of the perimeter 123 is at least flush with or longer than the end of the balance block, the perimeter 123 can achieve better airflow guidance, reducing the direct agitation of the surrounding oil by the balance block during high-speed rotation, reducing direct conflict between the airflow and the external environment, and thus effectively reducing exhaust resistance. This helps improve the compressor's exhaust efficiency, reduce energy loss, and thus improve overall energy efficiency.

[0064] In some embodiments, the rotor assembly 1 may optionally include a second balancing block 15 disposed at the second end 112 of the rotor core 11, corresponding to the first balancing block 14, wherein the first end 111 and the second end 112 of the rotor core 11 are opposite ends.

[0065] In these embodiments, a second balance block 15 may be provided at the second end 112 of the rotor core 11, opposite to the first end 111, and correspondingly provided with the first balance block 14. By providing balance blocks at both the first end 111 and the second end 112, the axial and radial forces of the rotor can be balanced more effectively, vibration sources can be reduced, the unbalanced mass of the rotor can be effectively offset, vibration and noise during high-speed rotation can be reduced, thereby improving the smoothness and reliability of the compressor's operation and extending the equipment's lifespan.

[0066] In some embodiments, the muffler 13 may optionally include: a muffler 131 having an opening on the side near the shroud 12; and a muffler pipe 132 having one end connected to the edge of the opening and the other end extending into the shroud 12, with the other end forming an exhaust port 133.

[0067] In these embodiments, the silencer 13 specifically includes a silencer shroud 131 and a silencer pipe 132. The silencer shroud 131 is typically a shell structure used to contain and absorb sound waves generated during exhaust, and it has an opening on the side near the shroud 12 to allow airflow. The silencer pipe 132 is a tubular component, with one end connected to the edge of the opening of the silencer shroud 131 (e.g., by welding, bolting, or integral molding), and the other end extending into the interior of the shroud 12, forming an exhaust port 133 for discharging compressed gas. This design allows the exhaust port 133 of the silencer 13 to be located directly inside the shroud 12, rather than being exposed to the external environment. By placing the exhaust port 133 of the silencer pipe 132 inside the shroud 12, the exhaust airflow directly enters the guide space of the shroud 12 after leaving the silencer 13, reducing direct conflict between the airflow and the external environment and turbulence generation, thereby smoothing the exhaust process, effectively reducing exhaust resistance, and improving the exhaust efficiency and overall energy efficiency of the compressor.

[0068] In some embodiments, the silencer 132 may be a flange 134 formed by flanging the periphery of the opening toward the side closer to the shroud 12.

[0069] In these embodiments, the silencer pipe 132 can be a flanged portion 134 formed by flanging the periphery of the opening of the silencer shroud 131 towards the side near the fan shroud 12. That is, the silencer pipe 132 is not a separate component, but a structure formed directly from the edge of the opening of the silencer shroud 131 through a flanging process (such as stamping, bending, or forming). The flanged portion 134 extends into the interior of the fan shroud 12 and serves as an exhaust port 133 for discharging compressed gas. This design simplifies the construction of the silencer 13, reduces the number of separate components, and avoids additional connection processes (such as welding or bolting), thereby simplifying the assembly process and reducing production costs and complexity. Simultaneously, the flanged portion 134, as an extension of the silencer shroud 131, forms an integrated airflow system with the fan shroud 12, reducing the risk of component loosening or failure, thereby improving the durability and operational reliability of the component, making it suitable for the harsh conditions of high-speed compressors.

[0070] In some embodiments, the rotor assembly 1 may optionally include a pump body assembly 16 disposed on the side of the silencer 13 away from the shroud 12, the side of the pump body assembly 16 near the silencer 13 having an air outlet 17 communicating with the interior of the silencer shroud 131.

[0071] In these embodiments, the rotor assembly 1 further includes a pump body assembly 16. The pump body assembly 16 is located on the side of the silencer 13 facing away from the shroud 12 (i.e., the other side of the silencer 13, opposite to the shroud 12), and the side of the pump body assembly 16 closest to the silencer 13 has an outlet 17 that directly communicates with the interior of the silencer 131. This means that the compressed gas, after being discharged from the outlet 17 of the pump body assembly 16, directly enters the interior space of the silencer 131, rather than through an intermediate channel or the external environment. By directly communicating the outlet 17 of the pump body assembly 16 with the interior of the silencer 131, the airflow transmission path from compression to silencer is more direct, reducing turbulence and pressure loss in intermediate stages, thereby effectively reducing exhaust resistance and improving the compressor's exhaust efficiency and overall energy efficiency.

[0072] In some embodiments, the pump body assembly 16 may optionally include an upper bearing 161, a cylinder 162, and a lower bearing 163. The upper bearing 161 is fixedly connected to the inner wall of the housing, the lower bearing 163 is spaced below the upper bearing 161, the muffler 13 is connected to the upper end of the upper bearing 161, the cylinder 162 is located between the upper bearing 161 and the lower bearing 163, and the cylinder 162 is connected to the lower end of the upper bearing 161 and to the upper end of the lower bearing 163.

[0073] In some embodiments, optionally, along the axial direction of the rotor core 11 (e.g. Figure 2 (Z indicates the direction in the middle) The length of the silencer 132 is H, the length of the silencer 132 extending into the wind shroud 12 is h, the wall thickness of the silencer 13 is T, and the thickness of the wind shroud 12 is t, where T≤H≤6T, 0.5t≤h≤6t, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm.

[0074] In these embodiments, along the axial direction of the rotor core 11, the length of the silencer pipe 132 is H, the length of the silencer pipe 132 extending into the shroud 12 is h, the wall thickness of the silencer 13 is T, and the thickness of the shroud 12 is t, wherein T≤H≤6T, 0.5t≤h≤6t, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm. By optimizing the length H and the extension length h of the silencer pipe 132, the exhaust airflow is ensured to smoothly enter the interior of the shroud 12 from the silencer 13, reducing airflow turning and turbulence generation, thereby effectively reducing exhaust resistance and improving the exhaust efficiency and overall energy efficiency of the compressor. The dimensional parameters T≤H≤6T, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm ensure the strength matching of the silencer pipe 132 and the shroud 12, avoiding deformation or damage caused by vibration or stress during high-speed operation, and improving the reliability and lifespan of the components. The insertion length h is in the range of 0.5t to 6t, so that the silencer pipe 132 and the shroud 12 edge 123 form a tight fit, reducing airflow leakage, further optimizing the airflow path, and enhancing the stability and consistency of system operation.

[0075] In some embodiments, t is optionally 0.8 mm.

[0076] In some embodiments, t is optionally 0.9 mm.

[0077] In some embodiments, t may optionally be 1 mm.

[0078] In some embodiments, t is optionally 1.1 mm.

[0079] In some embodiments, t is optionally 1.2 mm.

[0080] In some embodiments, T is optionally 0.8 mm.

[0081] In some embodiments, T is optionally 0.9 mm.

[0082] In some embodiments, T is optionally 1 mm.

[0083] In some embodiments, T is optionally 1.1 mm.

[0084] In some embodiments, T is optionally 1.2 mm.

[0085] According to an embodiment of the first aspect of this utility model, a rotor assembly is provided, including a rotor core assembly (rotor core), an anti-disturbance shroud (shroud), a balance block (including an upper balance block and a lower balance block), and a silencer. The balance block is mounted at the end of the rotor core assembly. The shroud is mounted on the rotor core assembly, with the shroud and the lower balance block located on the same side of the rotor core assembly, and the upper balance block located on the other side of the rotor core assembly. The shroud includes a circular plate and an anti-disturbance hollow cylinder. The circular plate is disposed on the axially lower side of the rotor core, and the lower balance block is mounted on the end of the circular plate of the anti-disturbance shroud. The anti-disturbance hollow cylinder is located radially inner to the lower balance block, is integral with the circular plate, and is higher than or flush with the lower balance block. The silencer has a long flanged opening and a silencer cover, with the long flange extending into a small through-hole at the lower end of the anti-disturbance shroud. The silencer is mounted on the upper end of the upper bearing. The silencer has a silencing chamber that connects to the exhaust channel. The long flange of the silencer opening extends into the hollow cylinder of the anti-disturbance shroud. The height of the long flange in the vertical direction is H, and its length extending into the small through-hole at the lower end of the fully enclosed shroud is h. The thickness of the silencer is T, and the thickness of the fully enclosed shroud is t, where T≤H≤6T, 0.5t≤h≤6t, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm.

[0086] The anti-disturbance section of the shroud improves the oil agitation of the balance block, enhances oil lubrication of the pump body, and the muffler, which extends deep into the anti-disturbance shroud, reduces exhaust resistance.

[0087] The second aspect of this invention provides an electric motor, including the rotor assembly 1 of any embodiment of the first aspect.

[0088] The motor provided by this utility model includes the rotor assembly 1 in any embodiment of the first aspect. Since the motor includes the rotor assembly 1 in any embodiment of the first aspect, the motor provided by this utility model also possesses all the beneficial effects of the rotor assembly 1 in any embodiment of the first aspect, which will not be elaborated further here.

[0089] A third aspect of this invention provides a compressor comprising a rotor assembly 1 as described in any embodiment of the first aspect; and / or a motor as described in any embodiment of the second aspect.

[0090] The compressor provided by this utility model includes a rotor assembly 1 as described in any embodiment of the first aspect; and / or a motor as described in any embodiment of the second aspect. Since the compressor includes the rotor assembly 1 as described in any embodiment of the first aspect; and / or a motor as described in any embodiment of the second aspect, the compressor provided by this utility model also possesses all the beneficial effects of the rotor assembly 1 as described in any embodiment of the first aspect and / or the motor as described in any embodiment of the second aspect, which will not be elaborated further here.

[0091] The fourth aspect of this utility model provides an air conditioning device, including a rotor assembly 1 as described in any embodiment of the first aspect; and / or a motor as described in any embodiment of the second aspect; and / or a compressor as described in any embodiment of the third aspect.

[0092] The air conditioning device provided by this utility model includes a rotor assembly 1 as described in any embodiment of the first aspect; and / or a motor as described in any embodiment of the second aspect; and / or a compressor as described in any embodiment of the third aspect. Since the air conditioning device includes the rotor assembly 1 as described in any embodiment of the first aspect; and / or a motor as described in any embodiment of the second aspect; and / or a compressor as described in any embodiment of the third aspect, the air conditioning device provided by this utility model also possesses all the beneficial effects of the rotor assembly 1 as described in any embodiment of the first aspect and / or the motor as described in any embodiment of the second aspect and / or the compressor as described in any embodiment of the third aspect, which will not be elaborated further here.

[0093] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0094] In the description of this specification, 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 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.

[0095] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotor assembly, characterized in that, include: Rotor core; A wind shield is disposed at the first end of the rotor core; A silencer is disposed on the side of the shroud away from the rotor core, and the exhaust port of the silencer is located inside the shroud.

2. The rotor assembly according to claim 1, characterized in that, The wind shield includes: Base plate, the base plate having through holes; A rim is provided around the through hole and connected to the base plate, with part of the muffler extending into the rim so that the exhaust port of the muffler is located inside the rim.

3. The rotor assembly according to claim 2, characterized in that, The base plate is connected to the first end of the rotor core. The surrounding edge is located on the side of the base plate away from the rotor core, and one end of the surrounding edge is connected to the edge of the through hole. Part of the muffler extends into the surrounding edge through the other end of the surrounding edge so that the exhaust port of the muffler is located inside the surrounding edge.

4. The rotor assembly according to claim 2, characterized in that, One end of the surrounding edge is connected to the first end of the rotor core, and the other end of the surrounding edge is connected to the outer edge of the base plate. Part of the muffler extends into the surrounding edge through the through hole so that the exhaust port of the muffler is located inside the surrounding edge.

5. The rotor assembly according to claim 2, characterized in that, Also includes: The first balance block is disposed at the first end of the rotor core and is located inside or outside the surrounding edge.

6. The rotor assembly according to claim 5, characterized in that, Along the axial direction of the through hole, the distance from the end of the surrounding edge away from the base plate to the end of the first balance block away from the base plate is greater than or equal to zero.

7. The rotor assembly according to claim 5, characterized in that, Also includes: The second balance block is disposed at the second end of the rotor core, corresponding to the first balance block. The first end and the second end of the rotor core are opposite ends.

8. The rotor assembly according to any one of claims 1 to 7, characterized in that, The silencer includes: A soundproof enclosure, wherein the soundproof enclosure has an opening on the side near the wind shield; A muffler pipe, one end of which is connected to the edge of the opening, and the other end of which extends into the shroud, forming the exhaust port.

9. The rotor assembly according to claim 8, characterized in that, The silencer tube is a flanged portion formed by turning the periphery of the opening towards the side closer to the shroud.

10. The rotor assembly according to claim 8, characterized in that, Also includes: A pump body assembly is disposed on the side of the silencer away from the shroud. The side of the pump body assembly near the silencer has an air outlet, which communicates with the interior of the silencer shroud.

11. The rotor assembly according to claim 8, characterized in that, Along the axial direction of the rotor core, the length of the silencer tube is H, the length of the silencer tube extending into the shroud is h, the wall thickness of the silencer is T, and the thickness of the shroud is t, wherein T≤H≤6T, 0.5t≤h≤6t, 0.8mm≤t≤1.2mm, and 0.8mm≤T≤1.2mm.

12. An electric motor, characterized in that, include: The rotor assembly as described in any one of claims 1 to 11.

13. A compressor, characterized in that, include: The rotor assembly as described in any one of claims 1 to 11; and / or The motor as described in claim 12.

14. An air conditioning device, characterized in that, include: The rotor assembly as described in any one of claims 1 to 11; and / or The motor as described in claim 12; and / or The compressor as described in claim 13.

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